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to obtain the most current and comprehensive results.


1

ENERGY STAR Score for Data Centers  

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

Data Centers in the United States Page 1 ENERGY STAR Score for Data Centers in the United States Technical Reference OVERVIEW The ENERGY STAR Score for Data Centers applies to...

2

ENERGY STAR Score for Data Centers  

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

Data Centers in the United States Page 1 Data Centers in the United States Page 1 ENERGY STAR Score for Data Centers in the United States Technical Reference OVERVIEW The ENERGY STAR Score for Data Centers applies to spaces specifically designed and equipped to meet the needs of high density computing equipment such as server racks, used for data storage and processing. The objective of the ENERGY STAR score is to provide a fair assessment of the energy performance of a property relative to its peers, taking into account the climate, weather, and business activities at the property. To identify the aspects of building activity that are significant drivers of energy use and then normalize for those factors, a statistical analysis of

3

ENERGY STAR Success Story: San Diego Convention Center | ENERGY STAR  

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

San Diego Convention Center San Diego Convention Center Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder

4

Industrial energy management information center | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

5

ENERGY STAR Score for Data Centers | ENERGY STAR  

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

real estate resources Congregation resources Corporate real estate resources Data center resources Entertainment venue resources Federal agency resources Grocery &...

6

ENERGY STAR Success Story: The Virginia Beach Convention Center | ENERGY  

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

ENERGY STAR Success Story: The Virginia Beach Convention Center ENERGY STAR Success Story: The Virginia Beach Convention Center Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources

7

ENERGY STAR Success Story San Diego Convention Center  

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

ENERGY STAR Success Story ENERGY STAR Success Story San Diego Convention Center Since opening 20 years ago, San Diego's bayside convention facility has been a green industry leader and continues to receive accolades for environmental stewardship. The San Diego Convention Center Corporation (SDCCC) joined the Environmental Protection Agency's (EPA) ENERGY STAR program as a partner in 2008. Using the EPA's online energy management and tracking tool, Portfolio Manager, the SDCCC tracked its energy consumption and has improved the facility's overall performance. Since then, the San Diego Convention Center has become a model for other convention and meeting facilities demonstrating the value of benchmarking to improve efficiency and to save money. . The Convention Center is managed and marketed by the SDCCC, a non-profit public

8

ENERGY STAR Success Story Fleet Science Center Dec 2009  

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

STAR The Fleet uses the U.S. Environmental Protection Agency's (EPA) Portfolio Manager tool to identify energy performance differences in their building, prioritize investments,...

9

Industrial energy management information center | ENERGY STAR Buildings &  

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

energy management information center energy management information center Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Improve energy performance Industrial service and product providers Earn recognition Market impacts: Improvements in the industrial sector

10

ENERGY STAR Success Story VA Beach Convention Center  

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

STAR Success Story: STAR Success Story: The Virginia Beach Convention Center Located in Virginia's most populous city, the Virginia Beach Convention Center (VBCC) comprises more than 516,000 square feet and typically hosts 400 events a year. Fully opened in 2007, the VBCC has served as the anchor for the successful revitalization of Virginia Beach's old beach district. With historical references and maritime themes integrated into the structure's modern design, the Center features many technological advances that make it a prime location for meetings, conferences, and trade shows. However, even with a newly constructed building, the VBCC has demonstrated an important energy management principle: all buildings, regardless of their age and building systems they employ, can reduce energy consumption, save money, and offset greenhouse gas

11

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

Quarterly Sampling, STAR Center, Largo, FL Quarterly Sampling, STAR Center, Largo, FL 7030-226 Accutest Job Number: F27229 Sampling Date: 10/07/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

12

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

Quarterly Sampling, STAR Center, Largo, FL Quarterly Sampling, STAR Center, Largo, FL 110406202 Accutest Job Number: F33211 Sampling Dates: 07/13/05 - 07/14/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

13

ENERGY STAR Success Story Fleet Science Center Dec 2009  

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

ENERGY STAR Success Story: Reuben H. Fleet Science Center The Reuben H. Fleet Science Center (the Fleet) is one of twenty-four arts, science, and cultural institutions that are part of San Diego's Balboa Park Cultural Partnership. The Partnership launched a sustainability initiative in 2008 along with the City of San Diego and San Diego Gas & Electric ® (SDG&E) with the goal of improving energy efficiency and reducing resource consumption at the Park's cultural institutions. To date, Balboa Park venues have decreased electricity usage by more than 3.5 million kWh and 87,000 therms of natural gas, realizing savings of $530,000. Built in 1973, the Fleet serves as a leader and a model in environmental sustainability to venues of Balboa Park and other entertainment facilities across the country. For over a decade, the Fleet has

14

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

0/06 0/06 Technical Report for S M Stoller Quarterly Sampling, STAR Center, Largo, FL 110406202 Accutest Job Number: F39137 Sampling Dates: 03/08/06 - 03/09/06 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

15

S M Stoller Star Center-B100  

Office of Legacy Management (LM)

/19/06 /19/06 Technical Report for S M Stoller Star Center-B100 110406202 7031-877 Accutest Job Number: F41217 Sampling Date: 06/02/06 Report to: US Dept of Energy, Grand Jct Office 2597 B3/4 Road Grand Junction, CO 81503 ATTN: Contracts Department, PO# 24231 x Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference

16

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

2/04 2/04 Technical Report for S M Stoller Quarterly Sampling, STAR Center, Largo, FL 110406202 Accutest Job Number: F25409 Sampling Dates: 07/13/04 - 07/14/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

17

Blue Star Memorial By-Way Dedication: Weldon Spring Interpretive Center |  

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

Blue Star Memorial By-Way Dedication: Weldon Spring Interpretive Blue Star Memorial By-Way Dedication: Weldon Spring Interpretive Center Blue Star Memorial By-Way Dedication: Weldon Spring Interpretive Center July 12, 2013 - 1:04pm Addthis Since 2003, the Lewis and Clark Garden Club (LCGC) of St. Charles County, Missouri, has held their monthly meetings in the Weldon Spring Interpretive Center (WSIC). The LCGC has 22 active members and takes care of 2 garden beds at the WSIC Native Plant Educational Garden under the site's Adopt-A-Garden program. In 2010 the LCGC contacted the U.S. Department of Energy (DOE), seeking approval to install a Blue Star Memorial By-Way Marker as a tribute to the nation's armed forces (see bottom of page for a history of the Blue Star Memorials). A 2,300-pound pink mica memorial marker was placed

18

S M Stoller Pinellas Environmental Restoration Project - Young- Rainey Star Center  

Office of Legacy Management (LM)

Pinellas Environmental Restoration Project - Young- Rainey Star Center Pinellas Environmental Restoration Project - Young- Rainey Star Center 110406202 Accutest Job Number: F33039 Sampling Date: 07/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

19

S M Stoller STAR Center- 4.5 Acre Site, Largo, FL  

Office of Legacy Management (LM)

STAR Center- 4.5 Acre Site, Largo, FL STAR Center- 4.5 Acre Site, Largo, FL 110406202 Accutest Job Number: F23552 Sampling Date: 04/20/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

20

Quarterly Progress Report for the Young-Rainey STAR Center's 4.5 Acre Site  

Office of Legacy Management (LM)

3-TAC 3-TAC GJO-PIN 25.5.1 Pinellas Environmental Restoration Project January through March 2003 Quarterly Progress Report for the Young-Rainey STAR Center's 4.5 Acre Site April 2003 Grand Junction Office U.S. Department of Energy Work Performed Under DOE Contract No. for the U.S. Department of Energy DE-AC13-02GJ79491 Approved for public release; distribution is unlimited. N0060800 GJO-2003-433-TAC GJO-PIN 25.5.1 Pinellas Environmental Restoration Project Quarterly Progress Report for the Young - Rainey STAR Center's 4.5 Acre Site January through March 2003 April 2003 Prepared by U.S. Department of Energy Grand Junction Office Grand Junction, Colorado Work Performed Under DOE Contract Number DE-AC13-02GJ79491 Task Order Number ST03-107

Note: This page contains sample records for the topic "difference star center" 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

S M Stoller Pinellas Environmental Restoration Project - Young - Rainey Star Center  

Office of Legacy Management (LM)

Young - Rainey Star Center Young - Rainey Star Center 110406202 Accutest Job Number: F30886 Sampling Date: 04/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

22

S M Stoller STAR Center- 4.5 Acre Site, Largo, FL  

Office of Legacy Management (LM)

STAR Center- 4.5 Acre Site, Largo, FL STAR Center- 4.5 Acre Site, Largo, FL 110406202 Accutest Job Number: F25243 Sampling Date: 07/06/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

23

S M Stoller Pinellas Environmental Restoration Project - Young - Rainey Star Center  

Office of Legacy Management (LM)

Young - Rainey Star Center Young - Rainey Star Center 110406202 Accutest Job Number: F35489 Sampling Date: 10/05/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

24

S M Stoller STAR Center- 4.5 Acre Site, Largo, FL  

Office of Legacy Management (LM)

STAR Center- 4.5 Acre Site, Largo, FL STAR Center- 4.5 Acre Site, Largo, FL 7030-226/Monthly Accutest Job Number: F27168 Sampling Date: 10/05/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

25

S M Stoller Pinellas Environmental Restoration Project - Young- Rainey Star Center  

Office of Legacy Management (LM)

Pinellas Environmental Restoration Project - Young- Rainey Star Center Pinellas Environmental Restoration Project - Young- Rainey Star Center 7030-226 Accutest Job Number: F29125 Sampling Date: 01/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable.

26

Sitewide Environmental Monitoring Quarterly Progress Report for the Young-Rainy STAR Center  

Office of Legacy Management (LM)

2-TAC 2-TAC GJO-PIN 11.6.2 Pinellas Environmental Restoration Project January through March 2003 Sitewide Environmental Monitoring Quarterly Progress Report for the Young-Rainey STAR Center April 2003 Grand Junction Office Grand Junction Office Grand Junction Office U.S. Department of Energy Work Performed Under DOE Contract No. for the U.S. Department of Energy DE-AC13-02GJ79491 Approved for public release; distribution is unlimited. N0060700 GJO-2003-432-TAC GJO-PIN 11.6.2 Pinellas Environmental Restoration Project Sitewide Environmental Monitoring Quarterly Progress Report for the Young - Rainey STAR Center January through March 2003 April 2003 Prepared by U.S. Department of Energy Grand Junction Office Grand Junction, Colorado Work Performed Under DOE Contract Number DE-AC13-02GJ79491

27

SPP marketing flyer for data centers | ENERGY STAR Buildings & Plants  

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

data centers data centers Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder Technical documentation

28

Best Practices Guide for Energy-Efficient Data Center Design | ENERGY STAR  

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

Guide for Energy-Efficient Data Center Design Guide for Energy-Efficient Data Center Design Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories

29

Trane and The American Center: SPP Success Story | ENERGY STAR Buildings &  

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

Trane and The American Center: SPP Success Story Trane and The American Center: SPP Success Story Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories

30

Quarterly Progress Report for the Young-Rainey STAR Center's 4.5 Acre Site  

Office of Legacy Management (LM)

600 600 GJO-2003-410-TAC GJO-PIN 25.5.1 Pinellas Environmental Restoration Project Quarterly Progress Report for the Young - Rainey STAR Center's 4.5 Acre Site October through December 2002 January 2003 Prepared by U.S. Department of Energy Grand Junction Office Grand Junction, Colorado Work Performed Under DOE Contract Number DE-AC13-02GJ79491 Task Order Number ST03-107 Document Number N0057600 Contents DOE/Grand Junction Office 4.5 Acre Site Quarterly Progress Report January 2003 Page iii Contents Acronyms and Abbreviations ..........................................................................................................v 1.0 Introduction ............................................................................................................................1

31

S M Stoller Pinellas Environmental Restoration Project - Young - Rainey Star Center  

Office of Legacy Management (LM)

6/06 6/06 Technical Report for S M Stoller Pinellas Environmental Restoration Project - Young - Rainey Star Center 110406202 Accutest Job Number: F43553 Sampling Date: 09/07/06 Report to: U.S. Dept of Energy, Grand Jct Office 2597 B 3/4 Road Grand Juction, CO 81503 ATTN: Contracts Department, PO# 24231 x Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference

32

Self-Regulated Fueling of Galaxy Centers: Evidence for Star-Formation Feedback in IC342's Nucleus  

E-Print Network (OSTI)

Using new, high-resolution interferometric observations of the CO and HCN molecules, we directly compare the molecular and ionized components of the interstellar medium in the center of the nearby spiral galaxy IC342, on spatial scales of ~ 10pc. The morphology of the tracers suggests that the molecular gas flow caused by a large-scale stellar bar has been strongly affected by the mechanical feedback from recent star formation activity within the central 100pc in the nucleus of the galaxy. Possibly, stellar winds and/or supernova shocks originating in the nuclear star cluster have compressed, and likely pushed outward, the infalling molecular gas, thus significantly reducing the gas supply to the central 10pc. Although our analysis currently lacks kinematic confirmation due to the face-on orientation of IC342, the described scenario is supported by the generally observed repetitive nature of star formation in the nuclear star clusters of late-type spiral galaxies.

Schinnerer, E; Meier, D S; Calzetti, D

2008-01-01T23:59:59.000Z

33

Self-Regulated Fueling of Galaxy Centers: Evidence for Star-Formation Feedback in IC342's Nucleus  

E-Print Network (OSTI)

Using new, high-resolution interferometric observations of the CO and HCN molecules, we directly compare the molecular and ionized components of the interstellar medium in the center of the nearby spiral galaxy IC342, on spatial scales of ~ 10pc. The morphology of the tracers suggests that the molecular gas flow caused by a large-scale stellar bar has been strongly affected by the mechanical feedback from recent star formation activity within the central 100pc in the nucleus of the galaxy. Possibly, stellar winds and/or supernova shocks originating in the nuclear star cluster have compressed, and likely pushed outward, the infalling molecular gas, thus significantly reducing the gas supply to the central 10pc. Although our analysis currently lacks kinematic confirmation due to the face-on orientation of IC342, the described scenario is supported by the generally observed repetitive nature of star formation in the nuclear star clusters of late-type spiral galaxies.

E. Schinnerer; T. Boeker; D. S. Meier; D. Calzetti

2008-08-06T23:59:59.000Z

34

Sitewide Environmental Monitoring Quarterly Progress Report for the Young-Rainey STAR Center, October through December 2002  

Office of Legacy Management (LM)

7500 7500 GJO-2003-409-TAC GJO-PIN 11.6.2 Pinellas Environmental Restoration Project Sitewide Environmental Monitoring Quarterly Progress Report for the Young - Rainey STAR Center October through December 2002 January 2003 Prepared by U.S. Department of Energy Grand Junction Office Grand Junction, Colorado Work Performed Under DOE Contract Number DE-AC13-02GJ79491 Task Order Number ST03-107 Document Number N0057500 Contents DOE/Grand Junction Office Pinellas Environmental Restoration Project January 2003 Page iii Contents Page Acronyms and Abbreviations ..........................................................................................................v 1.0 Introduction ............................................................................................................................1

35

The difference between source and site energy | ENERGY STAR Buildings &  

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

The difference between source and site energy The difference between source and site energy Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Learn the benefits Get started Use Portfolio Manager The new ENERGY STAR Portfolio Manager How Portfolio Manager helps you save The benchmarking starter kit Identify your property type Enter data into Portfolio Manager The data quality checker

36

DISENTANGLING CONFUSED STARS AT THE GALACTIC CENTER WITH LONG-BASELINE INFRARED INTERFEROMETRY  

SciTech Connect

We present simulations of Keck Interferometer ASTRA and VLTI GRAVITY observations of mock star fields in orbit within {approx}50 mas of Sgr A*. Dual-field phase referencing techniques, as implemented on ASTRA and planned for GRAVITY, will provide the sensitivity to observe Sgr A* with long-baseline infrared interferometers. Our results show an improvement in the confusion noise limit over current astrometric surveys, opening a window to study stellar sources in the region. Since the Keck Interferometer has only a single baseline, the improvement in the confusion limit depends on source position angles. The GRAVITY instrument will yield a more compact and symmetric point-spread function, providing an improvement in confusion noise which will not depend as strongly on position angle. Our Keck results show the ability to characterize the star field as containing zero, few, or many bright stellar sources. We are also able to detect and track a source down to m{sub K} {approx} 18 through the least confused regions of our field of view at a precision of {approx}200 {mu}as along the baseline direction. This level of precision improves with source brightness. Our GRAVITY results show the potential to detect and track multiple sources in the field. GRAVITY will perform {approx}10 {mu}as astrometry on an m{sub K} = 16.3 source and {approx}200 {mu}as astrometry on an m{sub K} = 18.8 source in 6 hr of monitoring a crowded field. Monitoring the orbits of several stars will provide the ability to distinguish between multiple post-Newtonian orbital effects, including those due to an extended mass distribution around Sgr A* and to low-order general relativistic effects. ASTRA and GRAVITY both have the potential to detect and monitor sources very close to Sgr A*. Early characterizations of the field by ASTRA, including the possibility of a precise source detection, could provide valuable information for future GRAVITY implementation and observation.

Stone, Jordan M.; Eisner, J. A. [Steward Observatory, University of Arizona, 933 N. Cherry Ave, Tucson, AZ 85721-0065 (United States); Monnier, J. D. [Astronomy Department, University of Michigan, 941 Dennison Bldg, Ann Arbor, MI 48109-1090 (United States); Woillez, J.; Wizinowich, P. [W. M. Keck Observatory, 65-1120 Mamalahoa Highway, Kamuela, HI 96743 (United States); Pott, J.-U. [Max-Planck-Institut fuer Astronomie, Koenigstuhl 1, D-69117 Heidelberg (Germany); Ghez, A. M., E-mail: jstone@email.arizona.edu, E-mail: jeisner@email.arizona.edu [Department of Physics and Astronomy, UCLA, Los Angeles, CA 90095-1547 (United States)

2012-08-01T23:59:59.000Z

37

DOE-SR Makes a Difference Through Donation to Educational Center |  

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

DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center February 24, 2011 - 12:00pm Addthis Media Contact Amy Caver, DOE (803) 952-7697 amy.caver@srs.gov Aiken, SC -- The Department of Energy-Savannah River Operations Office (DOE-SR) is making a real impact to increase learning resources for an educational nonprofit organization through its Computers for Learning (CFL) program. Just recently, DOE-SR donated 20 computer systems to the Darden Enlightenment Center located in Farmville, North Carolina. "We at DOE-SR are extremely pleased to be able to make a positive impact in communities where the needs of at-risk youth or senior citizens is great," said DOE-SR Manager Dave Moody. "The donation of these

38

DOE-SR Makes a Difference Through Donation to Educational Center |  

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

DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center DOE-SR Makes a Difference Through Donation to Educational Center February 24, 2011 - 12:00pm Addthis Media Contact Amy Caver, DOE (803) 952-7697 amy.caver@srs.gov Aiken, SC -- The Department of Energy-Savannah River Operations Office (DOE-SR) is making a real impact to increase learning resources for an educational nonprofit organization through its Computers for Learning (CFL) program. Just recently, DOE-SR donated 20 computer systems to the Darden Enlightenment Center located in Farmville, North Carolina. "We at DOE-SR are extremely pleased to be able to make a positive impact in communities where the needs of at-risk youth or senior citizens is great," said DOE-SR Manager Dave Moody. "The donation of these

39

A STAR DISRUPTED BY A STELLAR BLACK HOLE AS THE ORIGIN OF THE CLOUD FALLING TOWARD THE GALACTIC CENTER  

SciTech Connect

We propose that the cloud moving on a highly eccentric orbit near the central black hole in our Galaxy, reported by Gillessen et al., is formed by a photoevaporation wind originating in a disk around a star that is tidally perturbed and shocked at every peribothron passage. The disk is proposed to have formed when a stellar black hole flew by the star, tidally disrupted its envelope, and placed the star on its present orbit with some of the tidal debris forming a disk. A disrupting encounter at the location of the observed cloud is most likely to be caused by a stellar black hole because of the expected dynamical mass segregation; the rate of these disk-forming encounters may be as high as {approx}10{sup -6} per year. The star should also be spun up by the encounter, so the disk may subsequently expand by absorbing angular momentum from the star. Once the disk expands up to the tidal truncation radius, the tidal perturbation of the outer disk edge at every peribothron may place gas streams on larger orbits, which can give rise to a photoevaporation wind that forms the cloud at every orbit. This model predicts that, after the cloud is disrupted at the next peribothron passage in 2013, a smaller unresolved cloud will gradually grow around the star on the same present orbit. An increased infrared luminosity from the disk may also be detectable when the peribothron is reached. We also note that this model revives the encounter theory for planet formation.

Miralda-Escude, Jordi [Institucio Catalana de Recerca i Estudis Avancats, Barcelona, Catalonia (Spain)

2012-09-01T23:59:59.000Z

40

THE FRACTAL DIMENSION OF STAR-FORMING REGIONS AT DIFFERENT SPATIAL SCALES IN M33  

Science Conference Proceedings (OSTI)

We study the distribution of stars, H II regions, molecular gas, and individual giant molecular clouds in M33 over a wide range of spatial scales. The clustering strength of these components is systematically estimated through the fractal dimension. We find scale-free behavior at small spatial scales and a transition to a larger correlation dimension (consistent with a nearly uniform distribution) at larger scales. The transition region lies in the range {approx}500-1000 pc. This transition defines a characteristic size that separates the regime of small-scale turbulent motion from that of large-scale galactic dynamics. At small spatial scales, bright young stars and molecular gas are distributed with nearly the same three-dimensional fractal dimension (D {sub f,3D} {approx}< 1.9), whereas fainter stars and H II regions exhibit higher values, D {sub f,3D} {approx_equal} 2.2-2.5. Our results indicate that the interstellar medium in M33 is on average more fragmented and irregular than in the Milky Way.

Sanchez, Nestor; Alfaro, Emilio J. [Instituto de Astrofisica de AndalucIa, CSIC, Apdo. 3004, E-18080, Granada (Spain); Anez, Neyda [Departamento de Fisica, Facultad Experimental de Ciencias, Universidad del Zulia, Maracaibo (Venezuela, Bolivarian Republic of); Odekon, Mary Crone, E-mail: nestor@iaa.e [Department of Physics, Skidmore College, Saratoga Springs, NY 12866 (United States)

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

A NEW METHOD FOR CLASSIFYING FLARES OF UV Ceti TYPE STARS: DIFFERENCES BETWEEN SLOW AND FAST FLARES  

SciTech Connect

In this study, a new method is presented to classify flares derived from the photoelectric photometry of UV Ceti type stars. This method is based on statistical analyses using an independent samples t-test. The data used in analyses were obtained from four flare stars observed between 2004 and 2007. The total number of flares obtained in the observations of AD Leo, EV Lac, EQ Peg, and V1054 Oph is 321 in the standard Johnson U band. As a result flares can be separated into two types, slow and fast, depending on the ratio of flare decay time to flare rise time. The ratio is below 3.5 for all slow flares, while it is above 3.5 for all fast flares. Also, according to the independent samples t-test, there is a difference of about 157 s between equivalent durations of slow and fast flares. In addition, there are significant differences between amplitudes and rise times of slow and fast flares.

Dal, H. A.; Evren, S., E-mail: ali.dal@ege.edu.t [Department of Astronomy and Space Sciences, University of Ege, Bornova, 35100 Izmir (Turkey)

2010-08-15T23:59:59.000Z

42

INDEPENDENT TECHNICAL REVIEW OF THE BUILDING 100 PLUME, FORMER DOE PINELLAS SITE (YOUNG - RAINEY STAR CENTER), LARGO, FLORIDA  

SciTech Connect

Contaminated groundwater associated with Building 100 at the Young-Rainey Science, Technology, and Research Center, formerly the DOE Pinellas plant, is the primary remedial challenge that remains to be addressed at the site. Currently, Building 100 is an active industrial facility that is now owned and operated by the Pinellas county government. Groundwater samples collected from monitoring wells recently installed near the southern boundary of the site suggest that contaminated groundwater has migrated off the plant site. In response to the challenges presented by the Building 100 plume, the Office of Legacy Management (LM) requested assistance from the DOE Office of Groundwater and Soil Remediation (EM-32) to provide a review team to make technical recommendations so that they can efficiently and effectively address characterization and remediation of the plume. The review team was unanimous in the conclusion that a dynamic strategy that combines a phased implementation of direct push samplers, sensors, and tools can be used to better delineate the extent of contamination, control plume migration, and rapidly remediate the contaminated groundwater at the site. The initial efforts of the team focused on reviewing the site history and data, organizing the information into a conceptual model, identifying appropriate technologies, and recommending an integrated strategy. The current groundwater data from the site indicate a two-lobed plume extending to the east and south. To the east vinyl chloride is the primary contaminant of concern, to the south, vinyl chloride and cis1, 2-DCE are the primary contaminants. The limited data that are available suggest that reductive dechlorination of the TCE is already occurring but is not sufficient to prevent offsite migration of low concentrations of TCE daughter products. The team recommends that DOE pursue a strategy that builds on the natural cleansing capacity of the subsurface with reductive methods including biostimulation and/or bioaugmentation to provide a sustainable remediation system within the flow path of the plume. Additional data will be required to implement this approach and will include: (1) Better delineation of the nature and extent of contamination; (2) Demonstration the plume is currently stable or shrinking; and (3) Demonstration the full reductive dechlorination is occurring. The technical team recommends that DOE use a phased approach to identify residual contamination and to provide rapid installation of remedies. Matrices of characterization and remediation sensors, technologies, and tools were developed by the team in order to match the specific conditions and requirements of the site. The team provides a specific example of remedy that includes the incorporation of a dynamic characterization strategy moving from minimally invasive to more aggressive field techniques, the consideration of multiple complementary remediation approaches based on a spatiotemporally phased approach keyed to the different demands of different parts of the plume, and the integration and sequencing of the characterization and remediation activities.

Eddy-Dilek, C.; Rossabi, J.; Amidon, M.; Riha, B.; Kaback, D.

2010-07-30T23:59:59.000Z

43

How to Apply for Energy Star® Certification  

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

Receive notification of the application's status. June 2013 1 Property Types Eligible for ENERGY STAR Certification Bank Branch Courthouse Data Center Distribution Center Financial...

44

How to Apply for ENERGY STAR® Certification  

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

a site visit, verifying the information in your application. Property Types Eligible for ENERGY STAR Certification Bank Branch Courthouse Data Center Distribution Center Financial...

45

Stable Centered-Difference Schemes, Based on an Unstaggered A Grid, That Eliminate Two-Grid Interval Noise  

Science Conference Proceedings (OSTI)

The use of a centered-difference scheme on an unstaggered horizontal grid in time-dependent atmospheric or oceanic models leads to spurious two-grid-interval wave solutions that may appear as small-scale noise and mask the physically significant ...

Sajal K. Kar

2000-10-01T23:59:59.000Z

46

Leading organizations choose ENERGY STAR | ENERGY STAR Buildings & Plants  

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

Leading organizations choose ENERGY STAR Leading organizations choose ENERGY STAR Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Why design to earn ENERGY STAR Leading organizations choose ENERGY STAR Sell others on the idea of ENERGY STAR An overview of the ENERGY STAR lifecycle Design to earn ENERGY STAR Leading organizations choose ENERGY STAR Facebook's data center achieved Designed to Earn the ENERGY STAR More than

47

STAR Test Environment  

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

STAR Test Environment STAR Test Environment STAR Test Environment These instructions describe how to set up the STAR environment independent of the production environment in order to test different installations in $OPTSTAR and $GROUP_DIR. If you want to modify those installations you will need access to the starofl account. Bypass STAR envionment login Edit your ~/.pdsf_setup file changing the STAR_LINUX_SETUP to "use_none" and start a new session. You should not see all the STAR environmental variables defined when you do this (and it will probably be much quicker than usual, too). Do a manual STAR login If you want to modify what test environment you use copy the test login scripts to your own working area: cp -r /common/star/startest /path/to/myworkdir/. If you don't want to modify these files you can source them directly from

48

Data Center FAQs | ENERGY STAR  

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

manufacturing resources K-12 school resources Multifamily housing resources Restaurant resources Retail resources Senior care resources Small business resources State and...

49

Data center resources | ENERGY STAR  

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

manufacturing resources K-12 school resources Multifamily housing resources Restaurant resources Retail resources Senior care resources Small business resources State and...

50

Free stars  

E-Print Network (OSTI)

Free stars are certain subsets of a poset, first defined by me in [1]. Free stars are closely related with filters, namely free stars on a boolean lattice bijectively correspond to filters on this lattice. This article introduces consideration of free stars. Some questions are raised. Free stars are useful in my further (yet unpublished) research (in general topology).

Victor Porton; Shay Agnon

2012-01-01T23:59:59.000Z

51

STAR Search STAR Search5 30  

E-Print Network (OSTI)

STAR Search "" STAR STAR Search5 30 Tokyo Tech STAR STAR Search Tech OCW T2R2 Google Web T2R2 Tokyo Tech OCW Web #12; STAR STAR Search DB DB T2R2 Tokyo Tech OCW T2R2 Tokyo Tech OCW STAR Search STAR Search T2R2 Tokyo Tech OCW STAR

52

Nuclear Star Clusters - Structure and Stellar Populations  

E-Print Network (OSTI)

This is an overview of nuclear star cluster observations, covering their structure, stellar populations, kinematics and possible connection to black holes at the centers of galaxies.

Neumayer, Nadine

2012-01-01T23:59:59.000Z

53

Leading firms choose ENERGY STAR | ENERGY STAR Buildings & Plants  

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

Leading firms choose ENERGY STAR Leading firms choose ENERGY STAR Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Why you should design to earn the ENERGY STAR Leading firms choose ENERGY STAR Why new doesn't always mean efficient Follow EPA's step-by-step process ENERGY STAR Challenge for Architects Leading firms choose ENERGY STAR Facebook data center Hundreds of leading A/E firms have already partnered

54

Energy Star Lighting Verification Program  

SciTech Connect

The Program for the Evaluation and Analysis of Residential Lighting (PEARL) is a watchdog program. It was created in response to complaints received by utility program managers about the performance of certain Energy Star lighting products being promoted within their service territories and the lack of a self-policing mechanism within the lighting industry that would ensure the reliability of these products and their compliance with ENERGY STAR specifications. To remedy these problems, PEARL purchases and tests products that are available to the consumers in the marketplace. The Lighting Research Center (LRC) tests the selected products against the corresponding Energy Star specifications. This report includes the experimental procedure and results of Cycle Seven of PEARL program during the period of April 2006 to September 2006, along with the description of apparatus used, equipment calibration process, experimental methodology, and research findings from the testing. LRC continued receiving the CFL samples purchased by sponsors and finished performing the sphere testing for all CFL models at 100 hours of life. After that LRC aged the CFL samples to 1000 hours of life, and then performed sphere testing for all CFL models at 1000 hours of life. Then the CFLs were placed on the test rack to be aged to 40% of their rated life. Rapid Cycle Stress Test was also performed for all models using different sets of CFL samples.

Conan O'Rourke; Yutao Zhou

2006-09-30T23:59:59.000Z

55

Effects of color superconductivity on the nucleation of quark matter in neutron stars  

E-Print Network (OSTI)

We study the nucleation of quark matter drops at the center of cold deleptonized neutron stars. This is relevant in the determination of the critical mass $M_{cr}$ of hadronic stars above which it is possible a transition to a quark star (strange or hybrid). We investigate the dependence of $M_{cr}$ upon the parameters of the quark model (the Bag constant $B$, the pairing gap $\\Delta$, and the surface tension $\\sigma$ of the quark-hadron interphase) and for different parametrization of the hadronic equations of state. The dependence of $M_{cr}$ on $B$, $\\Delta$ and $\\sigma$ is mild if the parameters of the quark model correspond to hybrid stars, and strong if they correspond to strange stars. For a large part of the parameter space corresponding to hybrid stars, the critical mass is very close (but smaller than) the maximum mass of hadronic stars, and therefore compatible with a "mixed" population of compact stars (pure hadronic up to the critical mass and hybrid above the critical mass). For very large $B$ the critical mass is never smaller than the maximum mass of hadronic stars, implying that quark stars cannot form through the here studied mechanism. The energy released in the conversion is $3 \\times 10^{52}$ erg - $4 \\times 10^{53}$ erg, i.e. sufficient to power a gamma ray burst.

I. Bombaci; G. Lugones; I. Vidana

2006-03-23T23:59:59.000Z

56

ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

57

Data Centers: Looking for Energy Solutions  

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

organization gain control of energy consumption and costs. ENERGY STAR SPPs can help data center owners and operators reap the financial and environmental benefits of superior...

58

ENERGY STAR Snapshot | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

59

ENERGY STAR in action | ENERGY STAR  

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

Benchmark energy use ENERGY STAR in action Programs and policies using ENERGY STAR Green buildings and ENERGY STAR Communicate and educate Find out who's partnered with...

60

ENERGY STAR  

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

the measurement and tracking of electricity, gas, and water data, through the use of the ENERGY STAR Portfolio Manager tool. Goals included completion rates for critical and...

Note: This page contains sample records for the topic "difference star center" 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

NIST Stars  

Science Conference Proceedings (OSTI)

... Weather and climate research satellites could use SI Stars for on orbit calibration of their spectroradiometers and astronomers ... Facilities/Tools Used ...

2012-11-16T23:59:59.000Z

62

ENERGY STAR  

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

such as: Choosing ENERGY STAR certified appliances and electronics. Maintaining home heating and cooling systems to improve efficiency. Ensuring homes are well sealed...

63

ENERGY STAR  

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

and Other and Other Climate Protection Partnerships 2011 Annual Report CONTENTS Letter from the Administrator ............................................................................................................................................................................. 1 Executive Summary .............................................................................................................................................................................................. 2 Highlights of 2011 ......................................................................................................................................................................................... 4 ENERGY STAR Overview ......................................................................................................................................................................................

64

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. IX. RR Lyrae Stars in the Small Magellanic Cloud  

E-Print Network (OSTI)

The ninth part of the OGLE-III Catalog of Variable Stars (OIII-CVS) comprises RR Lyrae stars in the Small Magellanic Cloud (SMC). Our sample consists of 2475 variables, of which 1933 pulsate in the fundamental mode (RRab), 175 are the first overtone pulsators (RRc), 258 oscillate simultaneously in both modes (RRd) and 109 stars are suspected second-overtone pulsators (RRe). 30 objects are Galactic RR Lyr stars seen in the foreground of the SMC. We discuss some statistical features of the sample. Period distributions show distinct differences between SMC and LMC populations of RR Lyr variables, with the SMC stars having on average longer periods. The mean periods for RRab, RRc and RRe stars are 0.596, 0.366 and 0.293 days, respectively. The mean apparent magnitudes of RRab stars are equal to 19.70 mag in the V band and 19.12 mag in the I band. Spatial distribution of RR Lyr stars shows that the halo of the SMC is roughly round in the sky, however the density map reveals two maxima near the center of the SMC. F...

Soszynski, I; Szymanski, M K; Kubiak, M; Pietrzynski, G; Wyrzykowski, L; Ulaczyk, K; Poleski, R

2010-01-01T23:59:59.000Z

65

ENERGY STAR Challenge for Industry: Poster, "Our Actions Made...  

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

business resources State and local government resources ENERGY STAR Challenge for Industry: Poster, "Our Actions Made a Difference" This co-brandable poster is for ENERGY STAR...

66

University of Minnesota (NorthernSTAR Building America Partnership...  

Open Energy Info (EERE)

Partnership Type Incubator Partnering Center within NREL Electricity Resources & Building Systems Integration LinkedIn Connections University of Minnesota (NorthernSTAR Building...

67

Award Recipient of the ENERGY STAR Challenge for Industry Boeing...  

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

Award Recipient of the ENERGY STAR Challenge for Industry Boeing Long Beach - Douglas Center Complex Secondary menu About us Press room Contact Us Portfolio Manager Login Facility...

68

Build an energy program | ENERGY STAR Buildings & Plants  

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

information center Build an energy program ENERGY STAR is here to help. Use the Energy Program Assessment Matrix to identify the elements to include in your program. Read...

69

ENERGY STAR  

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

STAR certified buildings > photo of a room in the W Hotel, San Francisco, CA W HOTEL, San Francisco, Calif. In 2007, hotel employees submitted a petition asking management to...

70

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

71

Algorithms Used in Heterogeneous Dose Calculations Show Systematic Differences as Measured With the Radiological Physics Center's Anthropomorphic Thorax Phantom Used for RTOG Credentialing  

SciTech Connect

Purpose: To determine the impact of treatment planning algorithm on the accuracy of heterogeneous dose calculations in the Radiological Physics Center (RPC) thorax phantom. Methods and Materials: We retrospectively analyzed the results of 304 irradiations of the RPC thorax phantom at 221 different institutions as part of credentialing for Radiation Therapy Oncology Group clinical trials; the irradiations were all done using 6-MV beams. Treatment plans included those for intensity-modulated radiation therapy (IMRT) as well as 3-dimensional conformal therapy (3D-CRT). Heterogeneous plans were developed using Monte Carlo (MC), convolution/superposition (CS), and the anisotropic analytic algorithm (AAA), as well as pencil beam (PB) algorithms. For each plan and delivery, the absolute dose measured in the center of a lung target was compared to the calculated dose, as was the planar dose in 3 orthogonal planes. The difference between measured and calculated dose was examined as a function of planning algorithm as well as use of IMRT. Results: PB algorithms overestimated the dose delivered to the center of the target by 4.9% on average. Surprisingly, CS algorithms and AAA also showed a systematic overestimation of the dose to the center of the target, by 3.7% on average. In contrast, the MC algorithm dose calculations agreed with measurement within 0.6% on average. There was no difference observed between IMRT and 3D CRT calculation accuracy. Conclusion: Unexpectedly, advanced treatment planning systems (those using CS and AAA algorithms) overestimated the dose that was delivered to the lung target. This issue requires attention in terms of heterogeneity calculations and potentially in terms of clinical practice.

Kry, Stephen F., E-mail: sfkry@mdanderson.org [Radiological Physics Center, Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Alvarez, Paola; Molineu, Andrea; Amador, Carrie [Radiological Physics Center, Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Radiological Physics Center, Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States); Galvin, James [American College of Radiology/Radiation Therapy Oncology Group, Philadelphia, Pennsylvania (United States)] [American College of Radiology/Radiation Therapy Oncology Group, Philadelphia, Pennsylvania (United States); Followill, David S. [Radiological Physics Center, Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)] [Radiological Physics Center, Department of Radiation Physics, University of Texas MD Anderson Cancer Center, Houston, Texas (United States)

2013-01-01T23:59:59.000Z

72

Physics of Neutron Star Crusts  

E-Print Network (OSTI)

The physics of neutron star crusts is vast, involving many different research fields, from nuclear and condensed matter physics to general relativity. This review summarizes the progress, which has been achieved over the last few years, in modeling neutron star crusts, both at the microscopic and macroscopic levels. The confrontation of these theoretical models with observations is also briefly discussed.

N. Chamel; P. Haensel

2008-12-20T23:59:59.000Z

73

Earn recognition | ENERGY STAR  

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

ENERGY STAR Partner of the Year Award ENERGY STAR plant certification ENERGY STAR Challenge for Industry Success stories: Industrial energy management Market impacts: Improvements...

74

The Worker Component At The World Trade Center Cleanup: Addressing Cultural And Language Differences In Emergency Operations  

Science Conference Proceedings (OSTI)

On September 11, 2001, the terrorist attacks on the World Trade Center (WTC) caused astronomical loss of life and property. Systems in place to manage disaster response were strained to the limit because key first responders were among the casualties when the twin towers collapsed. In addition, the evolution of events required immediate response in a rapidly changing and extremely hazardous situation. Rescue, recovery, and clean up became an overpowering and sustained effort that would utilize the resources of federal, state and local governments and agencies. One issue during the response to the WTC disaster site that did not receive much attention was that of the limited and non-English speaking worker. The Operating Engineers National HAZMAT Program (OENHP), with its history of a Hispanic Outreach Program, was acutely aware of this issue with the Hispanic worker. The Hispanic population comprises approximately 27% of the population of New York City (1). The extremely unfortunate and tragic events of that day provided an opportunity to not only provide assistance for the Hispanic workers, but also to apply lessons learned and conduct studies on worker training with language barriers in a real life environment. However, due to the circumstances surrounding this tragedy, the study of these issues was conducted primarily by observation. Through partnerships with other organizations such as the Occupational Safety and Health Administration (OSHA), the New York Health Department, the New York Department of Design and Construction (DDC), the New York Committee for Occupational Safety and Health (NYCOSH), and private companies such as 3M and MSA, OENHP was able to provide translated information on hazards, protective measures, fit testing of respirators, and site specific safety and health training. The OENHP translated materials on hazards and how to protect workers into Spanish to assist in getting the information to the limited and non- English speaking workers.

McCabe, B.; Carpenter, C.; Blair. D.

2003-02-24T23:59:59.000Z

75

ENERGY STAR  

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

Protection Agency program helping businesses and individuals fight global warming through superior energy efficiency. Bring Your Green to Work with ENERGY STAR ® 1 Give It a rest Use the ENERGY STAR power management settings on your computer and monitor so they go into power save mode when not in use. Also use a power strip as a central "turn off" point when you are using equipment to completely disconnect the power supply. 2 Unplug It Unplug electronics such as cell phones and laptops once they are charged. Adapters plugged into outlets use energy even if they are not charging. 3 Light Up Your Work Life Replace the light bulb in your desk lamp with an ENERGY STAR qualified bulb. It will last up to 10 times longer and use about 75 percent less energy. Turn off the lights when

76

Chameleon stars  

Science Conference Proceedings (OSTI)

We consider a gravitating spherically symmetric configuration consisting of a scalar field nonminimally coupled to ordinary matter in the form of a perfect fluid. For this system we find static, regular, asymptotically flat solutions for both relativistic and nonrelativistic cases. It is shown that the presence of the nonminimal interaction leads to substantial changes both in the radial matter distribution of the star and in the star's total mass. A simple stability test indicates that, for the choice of parameters used in the paper, the solutions are unstable.

Dzhunushaliev, Vladimir [Institute for Basic Research, Eurasian National University, Astana, 010008 (Kazakhstan); Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, Bishkek, 720071 (Kyrgyzstan); Folomeev, Vladimir [Institute of Physicotechnical Problems and Material Science of the NAS of the Kyrgyz Republic, 265 a, Chui Street, Bishkek, 720071 (Kyrgyzstan); Singleton, Douglas [Institute for Basic Research, Eurasian National University, Astana, 010008 (Kazakhstan); Physics Department, CSU Fresno, Fresno, California 93740-8031 (United States)

2011-10-15T23:59:59.000Z

77

ENERGY STAR Challenge for Industry | ENERGY STAR  

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

ENERGY STAR plant certification ENERGY STAR Challenge for Industry See who has taken the Challenge See who has achieved the Challenge See who is promoting the Challenge ENERGY...

78

Oncology Center  

SciTech Connect

Efforts by the Hollings Cancer Center to earn a designation as a National Cancer Center are outlined.

Kraft, Andrew S.

2009-09-21T23:59:59.000Z

79

Quadrupole moments of rotating neutron stars and strange stars  

E-Print Network (OSTI)

We present results for models of neutron stars and strange stars constructed using the Hartle-Thorne slow-rotation method with a wide range of equations of state, focusing on the values obtained for the angular momentum $J$ and the quadrupole moment $Q$, when the gravitational mass $M$ and the rotational frequency $\\Omega$ are specified. Building on previous work, which showed surprising uniformity in the behaviour of the moment of inertia for neutron-star models constructed with widely-different equations of state, we find similar uniformity for the quadrupole moment. These two quantities, together with the mass, are fundamental for determining the vacuum space-time outside neutron stars. We study particularly the dimensionless combination of parameters $QM/J^2$ (using units for which $c=G=1$). This quantity goes to 1 in the case of a Kerr-metric black hole and deviations away from 1 then characterize the difference between neutron-star and black-hole space-times. It is found that $QM/J^2$ for both neutron stars and strange stars decreases with increasing mass, for a given equation of state, reaching a value of around 2 (or even less) for maximum-mass models, meaning that their external space-time is then rather well approximated by the Kerr metric. If $QM/J^2$ is plotter against compactness $R/2M$ (where $R$ is the radius), it is found that the relationship is nearly unique for neutron-star models, independent of the equation of state, while it is significantly different for strange stars. This gives a new way of possibly distinguishing between them.

Martin Urbanec; John C. Miller; Zdenek Stuchlik

2013-01-24T23:59:59.000Z

80

ENERGY STAR  

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

of Air and Radiation * For more information www.energystar.gov or call 1.888.STAR.YES (1.888.782.7937) * (6202J) EPA 430-H-08-002 * December 2008 * Recycled/Recyclable - Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 50% Post-consumer Content) of Air and Radiation * For more information www.energystar.gov or call 1.888.STAR.YES (1.888.782.7937) * (6202J) EPA 430-H-08-002 * December 2008 * Recycled/Recyclable - Printed with Vegetable Oil Based Inks on Recycled Paper (Minimum 50% Post-consumer Content) Enable power management settings so they automatically enter a low-power mode when not in use. monitor/computer Use a power strip as a central "turn off" point when you are done using office equipment to completely disconnect the power supply. power strip Unplug electronics

Note: This page contains sample records for the topic "difference star center" 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

NLTE wind models of hot subdwarf stars  

E-Print Network (OSTI)

We calculate NLTE models of stellar winds of hot compact stars (central stars of planetary nebulae and subdwarf stars). The studied range of subdwarf parameters is selected to cover a large part of these stars. The models predict the wind hydrodynamical structure and provide mass-loss rates for different abundances. Our models show that CNO elements are important drivers of subdwarf winds, especially for low-luminosity stars. We study the effect of X-rays and instabilities on these winds. Due to the line-driven wind instability, a significant part of the wind could be very hot.

Krticka, Jiri; 10.1007/s10509-010-0385-z

2010-01-01T23:59:59.000Z

82

Energy efficient data centers  

E-Print Network (OSTI)

operators, reliable building energy benchmark informationbenchmark the relative energy intensity of the various load components in a data center, several different, and often confusing, building

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

83

RHIC | STAR Detector  

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

The STAR Detector The STAR detector specializes in tracking the thousands of particles produced by each ion collision at RHIC. Weighing 1,200 tons and as large as a house, STAR is...

84

Establishing Regional Resource Centers  

Wind Powering America (EERE)

Establishing Regional Resource Centers Establishing Regional Resource Centers July 25, 2013 Coordinator: Welcome and thank you for standing by. At this time all participants are in a listen only mode. To ask a question later during the question and answer session please press star then 1 on your touchtone phone. Today's conference is being recorded. If you have any objections you may disconnect. And I would like to turn it over to Mr. Jonathan Bartlett. Sir, you may begin. Jonathan Bartlett: Thank you very much. This is Jonathan Bartlett from the Department of Energy's Wind and Water Power Technologies Office. Today's WPA Webinar will be on the subject of establishing regional resource centers. I will be joined by Ian Baring-Gould at the National Renewable Energy Laboratory and the

85

Isolated, Massive Supergiants near the Galactic Center  

E-Print Network (OSTI)

We have carried out a pilot project to assess the feasibility of using radio, infrared, and X-ray emission to identify young, massive stars located between 1 and 25 pc from the Galactic center. We first compared catalogs compiled from the Very Large Array, the Chandra X-ray Observatory, and 2MASS. We identified two massive, young stars: the previously-identified star that is associated with the radio HII region H2, and a newly-identified star that we refer to as CXOGC J174516.1-290315. The infrared spectra of both stars exhibit very strong Br-gamma and He I lines, and resemble those of massive supergiants that have evolved off of the main sequence, but not yet reached the Wolf-Rayet phase. We estimate that each star has a bolometric luminosity >10^6 L_sun. The detection of these two sources in X-rays is surprising, because stars at similar evolutionary states are not uniformly bright X-ray sources. Therefore, we suggest that both stars are in binary systems that contain either OB stars whose winds collide with those of the luminous supergiants, or compact objects that are accreting from the winds of the supergiants. We also identify X-ray emission from a nitrogen-type Wolf-Rayet star and place upper limits on the X-ray luminosities of three more evolved, massive stars that previously have been identified between 1 and 25 pc from Sgr A*. Finally, we briefly discuss the implications that future searches for young stars will have for our understanding of the recent history of star formation near the Galactic center. (abridged)

M. P. Muno; G. C. Bower; A. J. Burgasser; F. K. Baganoff; M. R. Morris; W. N. Brandt

2005-09-21T23:59:59.000Z

86

Home : ENERGY STAR  

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

STAR logo Skip directly to page content Energy Efficient Products Energy Efficient Products ENERGY STAR products are independently certified to save energy without sacrificing...

87

ENERGY STAR Challenge  

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

STAR Challenge for Industry Participant Handbook June 2013 ENERGY STAR is a U.S. Environmental Protection Agency Program helping organizations and individuals fight climate change...

88

Participation Form | ENERGY STAR  

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

application. Select the ENERGY STAR program you intend to participate in, and choose your primary contacts. Return this form to ENERGY STAR for consideration as a partner....

89

ENERGY STAR Certified New Homes : ENERGY STAR  

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

little label with a big message. Better is better. The blue ENERGY STAR label on a new home means: Peace of Mind Enduring Quality Wall-to-Wall Comfort Proven Value ENERGY STAR...

90

ENERGY STAR plant certification | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

91

ENERGY STAR Congregations Handout | ENERGY STAR  

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

handout to learn a summary of ENERGY STAR offerings for congregations, quick tips for saving energy in religious worship facilities, and how to sign up for the ENERGY STAR...

92

ENERGY STAR industrial partnership | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

93

ENERGY STAR communications toolkit | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

94

The value of ENERGY STAR | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

95

ENERGY STAR Challenge for Industry | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

96

ENERGY STAR for existing buildings | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

97

Kids Media Center : BioEnergy Science Center  

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

Kids Media Center Welcome to the Kids Media Center Here are some fun links to different resources about energy: EIA Kids Page - Information on all different kinds of energy -...

98

ENERGY STAR  

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

New Energy Technology 2754 Compass Drive, Grand Junction, CO 81506 Business: Energy Management Services/Consulting Sarah Faverman Phone: 970-243-0255 / Fax: 970-245-4268 Email: sarah@newenergytech.net Customer JCPenney Company, Inc. 6501 Legacy Drive, Plano, TX 75024 Business: Retail Rob Keller, P.E., Energy Management & Engineering Services Director Phone: 972-431-1788 / Fax: 972-531-1788 Email: rkeller@jcpenney.com New Energy Technology helped JCPenney earn the first ENERGY STAR labels for retail buildings and Partner of the Year Award. Project Scope New Energy Technology (NET) supports JCPenney's (JCP) energy conservation culture through three programs focused on high-quality energy data and energy management. Through its automated benchmarking

99

ENERGY STAR  

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

Green Team Checklist Green Team Checklist One person cannot do it all! So when it comes to making your workplace greener and more energy efficient, nothing beats a team. The Environmental Protection Agency (EPA) has learned from ENERGY STAR partners that forming a green team with coworkers is a great way to help increase energy efficiency and reduce office waste. Consider the following checklist of creative ideas from EPA to help your green team get started. Once you've formed your team, start by planting the seeds for success with small changes in individual workspaces. Then move through the list and help success bloom with bigger changes that can affect the whole organization. Together, these actions can help your green team build a better world! Start Off Right-Meet with management to get approval and buy-in for the idea of forming a green team. Not only does support

100

Environmental-aware virtual data center network  

Science Conference Proceedings (OSTI)

Cloud computing services have recently become a ubiquitous service delivery model, covering a wide range of applications from personal file sharing to being an enterprise data warehouse. Building green data center networks providing cloud computing services ... Keywords: Green ICT, GreenStar Network, Mantychore FP7, Neutral carbon network, Virtual data center

Kim Khoa Nguyen; Mohamed Cheriet; Mathieu Lemay; Victor Reijs; Andrew Mackarel; Alin Pastrama

2012-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

2014 ENERGY STAR Awards : ENERGY STAR  

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

Partner Resources Partner Resources Manufacturers Retailers New Home Industry Utilities/EEPS Residential & Commercial Products Programs Service & Product Providers Buildings & Plants Small Businesses Congregations For Contractors For Federal Agencies Join ENERGY STAR Home > Partner Resources > ENERGY STAR Awards 2014 ENERGY STAR Awards The application submission period for the 2014 ENERGY STAR Awards has closed. Each year, the ENERGY STAR program honors organizations that have made outstanding contributions to protecting the environment through energy efficiency. Please save the date for our awards ceremony on April 29, 2014. Ceremony registration information will be available on this website in January 2014. If you have any questions, please contact Rebecca Hudson, at

102

Generalized equation of state for cold superfluid neutron stars  

SciTech Connect

Mature neutron stars are expected to contain various kinds of superfluids in their interiors. Modeling such stars requires the knowledge of the mutual entrainment couplings between the different condensates. We present a unified equation of state describing the different regions of a neutron star with superfluid neutrons and superconducting protons in its core.

Chamel, N.; Goriely, S. [Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, B-1050 Brussels (Belgium); Pearson, J. M. [Departement de Physique, Universite de Montreal, Montreal (Quebec), H3C 3J7 (Canada)

2011-09-21T23:59:59.000Z

103

Cooling Evolution of Hybrid Stars  

E-Print Network (OSTI)

The cooling of compact isolated objects for different values of the gravitational mass has been simulated for two alternative assumptions. One is that the interior of the star is purely hadronic and second that the star can have a rather large quark core. It has been shown that within a nonlocal chiral quark model the critical density for a phase transition to color superconducting quark matter under neutron star conditions can be low enough for these phases to occur in compact star configurations with masses below 1.3 M_sun. For a realistic choice of parameters the equation of state (EoS) allows for 2SC quark matter with a large quark gap ~ 100 MeV for u and d quarks of two colors that coexists with normal quark matter within a mixed phase in the hybrid star interior. We argue that, if in the hadronic phase the neutron pairing gap in 3P_2 channel is larger than few keV and the phases with unpaired quarks are allowed, the corresponding hybrid stars would cool too fast. Even in the case of the essentially supp...

Grigorian, H

2005-01-01T23:59:59.000Z

104

Properties of Neutron Star Critical Collapses  

E-Print Network (OSTI)

Critical phenomena in gravitational collapse opened a new mathematical vista into the theory of general relativity and may ultimately entail fundamental physical implication in observations. However, at present, the dynamics of critical phenomena in gravitational collapse scenarios are still largely unknown. My thesis seeks to understand the properties of the threshold in the solution space of the Einstein field equations between the black hole and neutron star phases, understand the properties of the neutron star critical solution and clarify the implication of these results on realistic astrophysical scenarios. We develop a new set of neutron star-like initial data to establish the universality of the neutron star critical solution and analyze the structure of neutron star and neutron star-like critical collapses via the study of the phase spaces. We also study the different time scales involved in the neutron star critical solution and analyze the properties of the critical index via comparisons between neutron star and neutron star-like initial data. Finally, we explore the boundary of the attraction basin of the neutron star critical solution and its transition to a known set of non-critical fixed points.

Mew-Bing Wan

2010-01-10T23:59:59.000Z

105

Cooling Evolution of Hybrid Stars  

E-Print Network (OSTI)

The cooling of compact isolated objects for different values of the gravitational mass has been simulated for two alternative assumptions. One is that the interior of the star is purely hadronic and second that the star can have a rather large quark core. It has been shown that within a nonlocal chiral quark model the critical density for a phase transition to color superconducting quark matter under neutron star conditions can be low enough for these phases to occur in compact star configurations with masses below 1.3 M_sun. For a realistic choice of parameters the equation of state (EoS) allows for 2SC quark matter with a large quark gap ~ 100 MeV for u and d quarks of two colors that coexists with normal quark matter within a mixed phase in the hybrid star interior. We argue that, if in the hadronic phase the neutron pairing gap in 3P_2 channel is larger than few keV and the phases with unpaired quarks are allowed, the corresponding hybrid stars would cool too fast. Even in the case of the essentially suppressed 3P_2 neutron gap if free quarks occur for M cooling data existing by today. It is suggested to discuss a "2SC+X" phase, as a possibility to have all quarks paired in two-flavor quark matter under neutron star constraints, where the X-gap is of the order of 10 keV - 1 MeV. Density independent gaps do not allow to fit the cooling data. Only the presence of an X-gap that decreases with increase of the density could allow to appropriately fit the data in a similar compact star mass interval to that following from a purely hadronic model.

H. Grigorian

2005-02-28T23:59:59.000Z

106

Value Centers  

Science Conference Proceedings (OSTI)

Value centers identify the over-reaching themes, initiatives, and opportunities in alignment with the strategic goals of AOCS. Value Centers AOCS History and Governance about us aocs committees contact us division council fats governing board hist

107

The role of low-mass star clusters in massive star formation. The Orion Case  

E-Print Network (OSTI)

To distinguish between the different theories proposed to explain massive star formation, it is crucial to establish the distribution, the extinction, and the density of low-mass stars in massive star-forming regions. We analyze deep X-ray observations of the Orion massive star-forming region using the Chandra Orion Ultradeep Project (COUP) catalog. We studied the stellar distribution as a function of extinction, with cells of 0.03 pc x 0.03 pc, the typical size of protostellar cores. We derived stellar density maps and calculated cluster stellar densities. We found that low-mass stars cluster toward the three massive star-forming regions: the Trapezium Cluster (TC), the Orion Hot Core (OHC), and OMC1-S. We derived low-mass stellar densities of 10^{5} stars pc^{-3} in the TC and OMC1-S, and of 10^{6} stars pc^{-3} in the OHC. The close association between the low-mass star clusters with massive star cradles supports the role of these clusters in the formation of massive stars. The X-ray observations show for ...

Rivilla, V M; Jimenez-Serra, I; Rodriguez-Franco, A

2013-01-01T23:59:59.000Z

108

Building Technologies Program: ENERGY STAR®  

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

ENERGY STAR on Twitter Bookmark Building Technologies Program: ENERGY STAR on Google Bookmark Building Technologies Program: ENERGY STAR on Delicious Rank Building...

109

Building Technologies Office: ENERGY STAR®  

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

ENERGY STAR on Twitter Bookmark Building Technologies Office: ENERGY STAR on Google Bookmark Building Technologies Office: ENERGY STAR on Delicious Rank Building...

110

Become an ENERGY STAR partner | ENERGY STAR  

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

Become an ENERGY STAR partner Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction...

111

Earn ENERGY STAR certification | ENERGY STAR  

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

Earn ENERGY STAR certification Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction...

112

Sample ENERGY STAR performance documents | ENERGY STAR  

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

Verify and document your savings Sample ENERGY STAR performance documents Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers...

113

Green buildings and ENERGY STAR | ENERGY STAR  

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

Green buildings and ENERGY STAR Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction...

114

ENERGY STAR Building Upgrade Manual | ENERGY STAR  

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

ENERGY STAR Building Upgrade Manual Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

115

ENERGY STAR for small business | ENERGY STAR  

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

STAR, you can improve your small business's financial performance by reducing energy waste and energy costs, while protecting the environment. Join the network When you join...

116

Data Centers: Looking for Energy Solutions  

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

operating costs, benchmark energy performance, and demonstrate environmental stewardship. Turn to an ENERGY STAR ® Service and Product Provider Partner ENERGY STAR Service and Product Providers (SPPs) have the experience and tools to implement energy-efficient strategies that are right for you. Following the U.S. Environmental Protection Agency's (EPA) Guidelines for Energy Management, a proven strategy developed from ENERGY STAR partner successes, SPPs can help your organization gain control of energy consumption and costs. ENERGY STAR SPPs can help data center owners and operators reap the financial and environmental benefits of superior energy efficiency. In its 2007 Report to Congress on Server and Data Center Energy Efficiency Opportunities, EPA estimated that the nation's servers and data

117

Lithium abundances in exoplanet-hosts stars  

E-Print Network (OSTI)

Exoplanet-host stars (EHS) are known to present surface chemical abundances different from those of stars without any detected planet (NEHS). EHS are, on the average, overmetallic compared to the Sun. The observations also show that, for cool stars, lithium is more depleted in EHS than in NEHS. The overmetallicity of EHS may be studied in the framework of two different scenarii. We have computed main sequence stellar models with various masses, metallicities and accretion rates. The results show different profiles for the lithium destruction according to the scenario. We compare these results to the spectroscopic observations of lithium.

M. Castro; S. Vauclair; O. Richard; N. C. Santos

2008-03-20T23:59:59.000Z

118

Variable stars in the Fornax dSph Galaxy. II. Pulsating stars below the horizontal branch  

E-Print Network (OSTI)

We have carried out an intensive survey of the northern region of the Fornax dwarf spheroidal galaxy with the aim of detecting the galaxy's short--period pulsating stars (Pled us to reconstruct the Period-Luminosity relation for short-period pulsating stars. An excellent linear fit, M(V)=-1.83(+/-0.08)-3.65(+/-0.07) log P(fund), was obtained using 153 Delta Scuti and SX Phoenicis stars in a number of different stellar systems.

Ennio Poretti; Gisella Clementini; Enrico V. Held; Claudia Greco; Mario Mateo; Luca Dell'Arciprete; Luca Rizzi; Marco Gullieuszik; Marcella Maio

2008-06-27T23:59:59.000Z

119

STAR FORMATION IN ATOMIC GAS  

SciTech Connect

Observations of nearby galaxies have firmly established, over a broad range of galactic environments and metallicities, that star formation occurs exclusively in the molecular phase of the interstellar medium (ISM). Theoretical models show that this association results from the correlation between chemical phase, shielding, and temperature. Interstellar gas converts from atomic to molecular only in regions that are well shielded from interstellar ultraviolet (UV) photons, and since UV photons are also the dominant source of interstellar heating, only in these shielded regions does the gas become cold enough to be subject to Jeans instability. However, while the equilibrium temperature and chemical state of interstellar gas are well correlated, the timescale required to reach chemical equilibrium is much longer than that required to reach thermal equilibrium, and both timescales are metallicity-dependent. Here I show that the difference in timescales implies that, at metallicities below a few percent of the solar value, well shielded gas will reach low temperatures and proceed to star formation before the bulk of it is able to convert from atomic to molecular. As a result, at extremely low metallicities, star formation will occur in a cold atomic phase of the ISM rather than a molecular phase. I calculate the observable consequences of this result for star formation in low-metallicity galaxies, and I discuss how some current numerical models for H{sub 2}-regulated star formation may need to be modified.

Krumholz, Mark R., E-mail: krumholz@ucolick.org [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)

2012-11-01T23:59:59.000Z

120

NVLAP Recognized by ENERGY STAR  

Science Conference Proceedings (OSTI)

NVLAP Recognized by ENERGY STAR. For ... criteria. Details of the program can be found on the ENERGY STAR website. ...

2012-05-08T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Competitor resources | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

122

Federal agencies | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

123

ENERGY STAR Challenge  

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

STAR Challenge STAR Challenge for Industry Participant Handbook June 2013 ENERGY STAR is a U.S. Environmental Protection Agency Program helping organizations and individuals fight climate change through superior energy efficiency. Learn more at energystar.gov/buildings. 2 Contents Overview ............................................................................................................................. 3 Participation Eligibility .......................................................................................................... 4 How to Participate ............................................................................................................... 5 Step 1: Establish an energy intensity metric ................................................................ 5

124

Energy Star Lighting Verification Program  

SciTech Connect

The Program for the Evaluation and Analysis of Residential Lighting (PEARL) is a watchdog program. It was created in response to complaints received by utility program managers about the performance of certain Energy Star lighting products being promoted within their service territories and the lack of a self-policing mechanism within the lighting industry that would ensure the reliability of these products and their compliance with ENERGY STAR specifications. To remedy these problems, PEARL purchases and tests products that are available to the consumers in the marketplace. The Lighting Research Center (LRC) tests the selected products against the corresponding Energy Star specifications. This report includes the experimental procedure and results of Cycle Seven and Cycle Eight of PEARL program during the period of October 2006 to March 2007, along with the description of apparatus used, equipment calibration process, experimental methodology, and research findings from the testing. LRC finished performing the sphere testing for all CFL models in Cycle Seven at 40% of their rated life. LRC also performed re-test of Rapid Cycle Stress Test, under the request of DOE, for five CFL models that failed the Rapid Cycle Stress Test in Cycle Seven. From January 2007 to March 2007, LRC coordinated the procuring efforts for the CFL models that were selected for Cycle Eight.

Conan O'Rourke; Yutao Zhou

2007-03-31T23:59:59.000Z

125

Forming a Primordial Star in a Relic HII Region  

DOE Green Energy (OSTI)

There has been considerable theoretical debate over whether photoionization and supernova feedback from the first Population III stars facilitate or suppress the formation of the next generation of stars. We present results from an Eulerian adaptive mesh refinement simulation demonstrating the formation of a primordial star within a region ionized by an earlier nearby star. Despite the higher temperatures of the ionized gas and its flow out of the dark matter potential wells, this second star formed within 23 million years of its neighbor's death. The enhanced electron fraction within the HII region catalyzes rapid molecular hydrogen formation that leads to faster cooling in the subsequent star forming halos than in the first halos. This ''second generation'' primordial protostar has a much lower accretion rate because, unlike the first protostar, it forms in a rotationally supported disk of {approx} 10-100 M{center_dot}. In contrast to unpreprocessed regions, such configurations may allow binaries or multiple systems of lower mass stars to form. These first high resolution calculations offer insight into the impact of feedback upon subsequent populations of stars and clearly demonstrate how primordial chemistry promotes the formation of subsequent generations of stars even in the presence of the entropy injected by the first stars into the IGM.

O'Shea, Brian

2005-04-12T23:59:59.000Z

126

Help Center  

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

Los Alamos National Laboratory Advanced Simulation and Computing Los Alamos National Laboratory Advanced Simulation and Computing Menu Events Partnerships Help Center Events Partnerships Help Center Videos Advanced Simulation and Computing Program » Help Center Computing Help Center Help hotlines, hours of operation, training, technical assistance, general information Los Alamos National Laboratory Hours: Monday through Friday, 8:00 a.m. - noon, 1:00-5:00 p.m. Mountain time Telephone: (505) 665-4444 option 3 Fax: (505) 665-6333 E-mail: consult@lanl.gov 24 hours a day, 7 days a week Operations (to report a system or network problem: (505) 667-2919 Lawrence Livermore National Laboratory Hours: Monday through Friday, 8:00 a.m. - noon, 1:00-4:45 p.m. Pacific time High Performance Hotline (technical consulting) Telephone: (925) 422-4532

127

Use Energy Information Services to Benchmark with ENERGY STAR  

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

service products that meet different customer needs including: > Utility Bill Management: ENERGY STAR automated benchmarking, utility tracking, bill processing and payment,...

128

ENERGY STAR Challenge for Architects | ENERGY STAR  

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

Race to Denver 2012 Race to DC 2011 Race to New Orleans 2010 Race to Miami 2009 Race to San Francisco 2008 Race to Boston 2007 Race to San Antonio ENERGY STAR Challenge for...

129

Gravitational field energy contribution to the neutron star mass  

E-Print Network (OSTI)

Neutron stars are discussed as laboratories of physics of strong gravitational fields. The mass of a neutron star is split into matter energy and gravitational field energy contributions. The energy of the gravitational field of neutron stars is calculated with three different approaches which give the same result. It is found that up to one half of the gravitational mass of maximum mass neutron stars is comprised by the gravitational field energy. Results are shown for a number of realistic equations of state of neutron star matter.

M. Dyrda; B. Kinasiewicz; M. Kutschera; A. Szmaglinski

2006-01-16T23:59:59.000Z

130

VARIABILITY AND STAR FORMATION IN LEO T, THE LOWEST LUMINOSITY STAR-FORMING GALAXY KNOWN TODAY  

SciTech Connect

We present results from the first combined study of variable stars and star formation history (SFH) of the Milky Way 'ultra-faint' dwarf (UFD) galaxy Leo T, based on F606W and F814W multi-epoch archive observations obtained with the Wide Field Planetary Camera 2 on board the Hubble Space Telescope. We have detected 14 variable stars in the galaxy. They include one fundamental-mode RR Lyrae star and 11 Anomalous Cepheids with periods shorter than 1 day, thus suggesting the occurrence of multiple star formation episodes in this UFD, of which one about 10 Gyr ago produced the RR Lyrae star. A new estimate of the distance to Leo T of 409{sup +29}{sub -27} kpc (distance modulus of 23.06 {+-} 0.15 mag) was derived from the galaxy's RR Lyrae star. Our V, V - I color-magnitude diagram (CMD) of Leo T reaches V {approx} 29 mag and shows features typical of a galaxy in transition between dwarf irregular and dwarf spheroidal types. A quantitative analysis of the SFH, based on the comparison of the observed V, V - I CMD with the expected distribution of stars for different evolutionary scenarios, confirms that Leo T has a complex SFH dominated by two enhanced periods about 1.5 and 9 Gyr ago, respectively. The distribution of stars and gas shows that the galaxy has a fairly asymmetric structure.

Clementini, Gisella; Cignoni, Michele; Ramos, Rodrigo Contreras; Federici, Luciana; Tosi, Monica [INAF, Osservatorio Astronomico di Bologna, I-40127 Bologna (Italy); Ripepi, Vincenzo; Marconi, Marcella; Musella, Ilaria, E-mail: gisella.clementini@oabo.inaf.it, E-mail: rodrigo.contreras@oabo.inaf.it, E-mail: luciana.federici@oabo.inaf.it, E-mail: monica.tosi@oabo.inaf.it, E-mail: michele.cignoni@unibo.it, E-mail: ripepi@na.astro.it, E-mail: marcella@na.astro.it, E-mail: ilaria@na.astro.it [INAF, Osservatorio Astronomico di Capodimonte, I-80131 Napoli (Italy)

2012-09-10T23:59:59.000Z

131

Cushman & Wakefield Environmental Challenge | ENERGY STAR  

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STAR in action Communicate and educate ENERGY STAR communications toolkit Bring Your Green to Work with ENERGY STAR Motivate with a competition ENERGY STAR National Building...

132

THE Be STAR SPECTRA (BeSS) DATABASE  

Science Conference Proceedings (OSTI)

Be stars vary on many timescales, from hours to decades. A long time base of observations to analyze certain phenomena in these stars is therefore necessary. Collecting all existing and future Be star spectra into one database has thus emerged as an important tool for the Be star community. Moreover, for statistical studies, it is useful to have centralized information on all known Be stars via an up-to-date catalog. These two goals are what the Be Star Spectra (BeSS, http://basebe.obspm.fr) database proposes to achieve. The database contains an as-complete-as-possible catalog of known Be stars with stellar parameters, as well as spectra of Be stars from all origins (any wavelength, any epoch, any resolution, etc.). It currently contains over 54,000 spectra of more than 600 different Be stars among the {approx}2000 Be stars in the catalog. A user can access and query this database to retrieve information on Be stars or spectra. Registered members can also upload spectra to enrich the database. Spectra obtained by professional as well as amateur astronomers are individually validated in terms of format and science before being included in BeSS. In this paper, we present the database itself as well as examples of the use of BeSS data in terms of statistics and the study of individual stars.

Neiner, C.; De Batz, B. [LESIA, UMR 8109 du CNRS, Observatoire de Paris, UPMC, Univ. Paris Diderot, 92195 Meudon Cedex (France); Cochard, F. [Shelyak Instruments, Les Roussets, 38420 Revel (France); Floquet, M.; Mekkas, A. [GEPI, UMR 8111 du CNRS, Observatoire de Paris, Univ. Paris Diderot, 92195 Meudon Cedex (France); Desnoux, V., E-mail: coralie.neiner@obspm.fr [ARAS, Astronomical Ring for Access to Spectroscopy (Country Unknown)

2011-11-15T23:59:59.000Z

133

TRAN-STAR EXECUTIVE LIMOUSINE COMPANY  

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

TRAN-STAR EXECUTIVE LIMOUSINE COMPANY TRAN-STAR EXECUTIVE LIMOUSINE COMPANY http://www.tranexec.com 20% off published rates for BNL Our reservation center is open 24 hours a day, 365 days a year, so you will always talk to a live agent who has direct contact with our chauffeurs. You can make reservations via phone, website or a simple e-mail to customerservice@tranexec.com once a profile has been established. Our advanced reservation system will track any flight and you can rest assured someone will always be there to meet the arriving passenger, no matter what time the flight arrives. http://www.tranexec.com/TranStarSalesBrochure.pdf These rates are inclusive rates, meaning they include gratuity, taxes....everything. They do not include parking or tolls

134

ENERGY STAR Success Story: Staples, Inc.  

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

STAR Success Story: STAR Success Story: Staples, Inc. Staples, the world's largest office products company, has been an energy management and environmental leader in the retail industry for several years. Staples first partnered with the U.S. Environmental Protection Agency's (EPA) Green Lights Program, the predecessor to ENERGY STAR, and in 1999, won the Green Lights Partner of the Year recognition. Staples also has the distinction of being one of the first retailers to benchmark its entire portfolio of over 1,500 retail stores and 200 distribution centers. Even as the company's building portfolio has grown, with total square footage increasing by over 6 percent in just the past three years, Staples has reduced its building portfolio-wide energy usage by more than 11.4%, and recently became the first retailer

135

Results from STAR Beam Energy Scan Program  

E-Print Network (OSTI)

Results from the Beam Energy Scan (BES) program conducted recently by STAR experiment at RHIC are presented. The data from Phase-I of the BES program collected in Au+Au collisions at center-of-mass energies (\\sqrt{s_{NN}}) of 7.7, 11.5, 19.6, 27, and 39 GeV cover a wide range of baryon chemical potential ?\\mu_B (100-400 MeV) in the QCD phase diagram. Several STAR results from the BES Phase-I related to "turn-o?ff" of strongly inter- acting quark-gluon plasma (sQGP) signatures and signals of QCD phase boundary are reported. In addition to this, an outlook is presented for the future BES Phase-II program and a possible ?fixed target program at STAR.

Michal Sumbera

2013-01-30T23:59:59.000Z

136

Center Resources  

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

Resources for Planning Center Activities Resources for Planning Center Activities       QuarkNet at Work - Resources Home QuarkNet is a teacher professional development effort funded by the National Science Foundation and the US Department of Energy. Teachers work on particle physics experiments during a summer and join a cadre of scientists and teachers working to introduce some aspects of their research into their classrooms. This allows tomorrow's particle physicists to peek over the shoulder of today's experimenters. These resources are available for lead teachers and mentors at Quartnet Centers as they design activities for associate teacher workshops and follow-on activities. Important Findings from Previous Years Mentor Tips Associate Teacher Institute Toolkit

137

star-shaped polygon  

Science Conference Proceedings (OSTI)

NIST. star-shaped polygon. (definition). Definition: A polygon P in which there exists an interior point p such that all the boundary ...

2013-05-08T23:59:59.000Z

138

Energy Star Portfolio Manager®  

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

May 2013 What's New in Portfolio Manager ? EPA's ENERGY STAR Portfolio Manager tool helps you measure and track energy use, water use, and greenhouse gas emissions of your...

139

Press room | ENERGY STAR  

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

improve their efficiency, and earn recognition. Learn more about the program Facts and statistics See who's partnered with ENERGY STAR Find certified buildings and plants...

140

Energy guides | ENERGY STAR  

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

track, and benchmark Improve energy performance ENERGY STAR industrial partnership Energy guides Energy efficiency and air regulation Plant energy auditing Industrial...

Note: This page contains sample records for the topic "difference star center" 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

A Star on Earth  

Science Conference Proceedings (OSTI)

Jun 2, 2009 ... The world's highest-energy laser system, capable of creating temperatures and pressures that now only exist in the cores of stars, was unveiled ...

142

A TEST FOR RADIAL MIXING USING LOCAL STAR SAMPLES  

SciTech Connect

We use samples of local main-sequence stars to show that the radial gradient of [Fe/H] in the thin disk of the Milky Way decreases with mean effective stellar temperature. Many of these stars are visiting the solar neighborhood from the inner and outer Galaxy. We use the angular momentum of each star about the Galactic center to determine the guiding center radius and to eliminate the effects of epicyclic motion, which would otherwise blur the estimated gradients. We interpret the effective temperature as a proxy for mean age, and conclude that the decreasing gradient is consistent with the predictions of radial mixing due to transient spiral patterns. We find some evidence that the trend of decreasing gradient with increasing mean age breaks to a constant gradient for samples of stars whose main-sequence lifetimes exceed the likely age of the thin disk.

Yu Jincheng; Chen Li; Hou Jinliang [Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China); Sellwood, J. A.; Pryor, Carlton, E-mail: yujc@shao.ac.cn, E-mail: chenli@shao.ac.cn, E-mail: houjl@shao.ac.cn, E-mail: sellwood@physics.rutgers.edu, E-mail: pryor@physics.rutgers.edu [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854 (United States)

2012-08-01T23:59:59.000Z

143

Centers | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Centers Centers Energy Frontier Research Centers (EFRCs) EFRCs Home Centers Research Science Highlights News & Events Publications Contact BES Home Centers Print Text Size: A A A RSS Feeds FeedbackShare Page Energy Frontier Research Centers To learn more about each of the 46 EFRC centers, click on the stars in the map or the html links below. Interactive Map of Energy Frontier Research Centers CETM PHaSE CES RPEMSC NECCES CEFRC EMC2 CCEI CLSF Efree NEES CCHF UNC HeteroFoaM CSTEC RMSSEC MSA C3Bio CABS PARC CALCD SSLS CISSEM BISfuel LMI CEN MEEM CEEM CNEEC CGS NCGC CID CMSNF CME CE S3TEC FIRST CDP CEES IACT ANSER NERC CST CFSES CMIME CASP Centers ordered alphabetically by state and then by center name Arizona Center for Bio-Inspired Solar Fuel Production (BISfuel) Devens Gust, Arizona State University

144

HEADQUARTERS & CONVENTION CENTER FLOORPLANS  

Science Conference Proceedings (OSTI)

Cyber Café. Moscone West Convention. Center. Lobby. General Poster Session. Moscone West Convention. Center. Exhibit Hall. Employment Referral. Center.

145

Ten reasons to pursue ENERGY STAR certification | ENERGY STAR...  

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

substantial. For example, ENERGY STAR certified office buildings cost 0.50 less per square foot to operate than their peers. Currently, ENERGY STAR certified buildings are...

146

ENERGY STAR certification | ENERGY STAR Buildings & Plants  

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

ENERGY STAR certification ENERGY STAR certification Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Find out who's partnered with ENERGY STAR Become an ENERGY STAR partner Find ENERGY STAR certified buildings and plants ENERGY STAR certification Featured research and reports Facts and stats Climate change and buildings ENERGY STAR certification

147

EPA's ENERGY STAR National Building Competition | ENERGY STAR  

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

ENERGY STAR communications toolkit Motivate with a competition EPA's ENERGY STAR National Building Competition Secondary menu About us Press room Contact Us Portfolio...

148

ENERGY STAR Partner of the Year Award | ENERGY STAR  

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

Partner of the Year profiles in leadership ENERGY STAR plant certification ENERGY STAR Challenge for Industry Success stories: Industrial energy management Market impacts:...

149

Join ENERGY STAR as a partner | ENERGY STAR  

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

we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use ENERGY STAR in action Communicate and...

150

EPA's ENERGY STAR National Building Competition | ENERGY STAR  

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

How can we help you? Communicate and educate ENERGY STAR communications toolkit Motivate with a competition EPA's ENERGY STAR National Building Competition...

151

The value of ENERGY STAR certification | ENERGY STAR  

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

building as ENERGY STAR. Below is a summary of several studies that evaluated the added market value of ENERGY STAR certified buildings. Chart showing price advantages of ENERGY...

152

ENERGY STAR Homes in the News : ENERGY STAR  

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

ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR products are...

153

STAR Teaching Program Application Period | Department of Energy  

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

STAR Teaching Program Application Period STAR Teaching Program Application Period STAR Teaching Program Application Period December 28, 2012 2:30PM EST to January 31, 2013 5:30PM EST Cal Poly The Science Teacher and Researcher (STAR) Researcher program, a collaborative project of California State University, provides pre-service and early career science teachers with eight week long paid mentor and research opportunities at a national research center. Applicants must have the following: A demonstrated interest in becoming a science or mathematics teacher at the secondary level (grades 6-12) Either a California State University (CSU) student OR NSF Noyce Scholar in the United States OR a STAR Alum with two or fewer years of participation AND two or fewer years of teaching experience (first time participants must be pre-service teachers, i.e., not yet teaching full-time

154

SOUTHVIEWDR Center for Applied  

E-Print Network (OSTI)

/Geology Chemistry Biological Sciences Geology Lab Bookstore Reed Milledge Payne Memorial Hall SANFORD DR Center CAES Activity Center Visitors Center (Four Towers) Greenhouses Center for Applied Isotope Study

Hall, Daniel

155

STAR METRICS | Department of Energy  

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

STAR METRICS STAR METRICS May 4, 2011 - 4:47pm Addthis Energy continues to define Phase II of the STAR METRICS program, a collaborative initiative to track Research and Development...

156

ENERGY STAR Score for Offices  

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

July 2013 ENERGY STAR Score for Offices in the United States Page 1 ENERGY STAR Score for Offices in the United States Technical Reference OVERVIEW The ENERGY STAR Score for...

157

Commercial new construction | ENERGY STAR  

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

6: Complete the ENERGY STAR lifecycle See projects that have been Designed to Earn the ENERGY STAR 1 World Green Building Trends: Business Benefits Driving New and Retrofit...

158

Star Biomass | Open Energy Information  

Open Energy Info (EERE)

Biomass Jump to: navigation, search Name Star Biomass Place India Sector Biomass Product Plans to set up biomass projects in Rajasthan. References Star Biomass1 LinkedIn...

159

ENERGY STAR Score for Hospitals  

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

Hospitals in the United States Page 1 ENERGY STAR Score for Hospitals in the United States Technical Reference OVERVIEW The ENERGY STAR Score for Hospitals applies to general...

160

Home : ENERGY STAR  

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

Who dared imagine? Who dared imagine? Our newest video celebrates 20 years of success with our innovative ENERGY STAR partners. See the Video EPA Logo ENERGY STAR is a U.S. Environmental Protection Agency voluntary program that helps businesses and individuals save money and protect our climate through superior energy efficiency. Learn more about ENERGY STAR. A comprehensive review of ENERGY STAR and other EPA climate protection partnerships. See 2011 Annual Report. Basic information on climate change, greenhouse gas emissions, and climate change science. See Climate Change. With help from ENERGY STAR, by 2012, Americans had cumulatively prevented more than 1.8 billion metric tons of GHG emissions. See 2012 Achievements. Energy Efficiency For Your Home

Note: This page contains sample records for the topic "difference star center" 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

Protoneutron Star Winds  

E-Print Network (OSTI)

Neutrino-driven winds are thought to accompany the Kelvin-Helmholtz cooling phase of nascent protoneutron stars in the first seconds after a core-collapse supernova. These outflows are a likely candidate as the astrophysical site for rapid neutron-capture nucleosynthesis (the r-process). In this chapter we review the physics of protoneutron star winds and assess their potential as a site for the production of the heavy r-process nuclides. We show that spherical transonic protoneutron star winds do not produce robust $r$-process nucleosynthesis for `canonical' neutron stars with gravitational masses of 1.4 M_sun and coordinate radii of 10 km. We further speculate on and review some aspects of neutrino-driven winds from protoneutron stars with strong magnetic fields.

Todd A. Thompson

2003-09-03T23:59:59.000Z

162

Electrically charged compact stars  

E-Print Network (OSTI)

We review here the classical argument used to justify the electrical neutrality of stars and show that if the pressure and density of the matter and gravitational field inside the star are large, then a charge and a strong electric field can be present. For a neutron star with high pressure (~ 10^{33} to 10^{35} dynes /cm^2) and strong gravitational field (~ 10^{14} cm/s^2), these conditions are satisfied. The hydrostatic equation which arises from general relativity, is modified considerably to meet the requirements of the inclusion of the charge. In order to see any appreciable effect on the phenomenology of the neutron stars, the charge and the electrical fields have to be huge (~ 10^{21} Volts/cm). These stars are not however stable from the viewpoint that each charged particle is unbound to the uncharged particles, and thus the system collapses one step further to a charged black hole

Subharthi Ray; Manuel Malheiro; Jose' P. S. Lemos; Vilson T. Zanchin

2006-04-17T23:59:59.000Z

163

Condensation temperature trends among stars with planets  

E-Print Network (OSTI)

Results from detailed spectroscopic analyses of stars hosting massive planets are employed to search for trends between abundances and condensation temperatures. The elements C, S, Na, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Ni and Zn are included in the analysis of 64 stars with planets and 33 comparison stars. No significant trends are evident in the data. This null result suggests that accretion of rocky material onto the photospheres of stars with planets is not the primary explanation for their high metallicities. However, the differences between the solar photospheric and meteoritic abundances do display a weak but significant trend with condensation temperature. This suggests that the metallicity of the sun's envelope has been enriched relative to its interior by about 0.07 dex.

Guillermo Gonzalez

2005-12-08T23:59:59.000Z

164

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

165

Focus on Research Three New DOE Energy Centers Awarded  

E-Print Network (OSTI)

on the three projects. "We also face short- age of power system engineers, energy engineers and skilled workers Center supports a comprehensive training infrastructure for sales, design, installation, commissioning, util- ity officers, manufacturing executives, and workforce development agencies, the GridSTAR Center

Yener, Aylin

166

What is Energy Star? ENERGY STAR  

E-Print Network (OSTI)

What is Energy Star? ENERGY STAR® qualified products and practices help you save money and reduce greenhouse gas emissions by meeting strict energy efficiency guidelines set by the U.S. Environmental Protection Agency (EPA) and the U.S. Department of Energy. You can help reduce electricity usage and its

van Tiggelen, Bart

167

Data Center Alternative Cooling Analysis Tool  

amounts of energy. Consistent large loads of energy are required for data center efficiency and reliability. Four different cooling technologies, ...

168

Reliability-Centered Maintenance | Department of Energy  

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

Reliability-Centered Maintenance Reliability-Centered Maintenance Reliability-Centered Maintenance October 7, 2013 - 9:48am Addthis Reliability-centered maintenance leverages the same practices and technologies of predictive maintenance. The difference is that reliability-centered maintenance recognizes that: Equipment design and operations differ Different equipment has different probabilities of failure All equipment is not of equal importance to facility operations Facilities have limited financial and personnel resources. While reliability-centered maintenance relies on predictive maintenance practices and technologies, it also recognizes that maintenance on inexpensive and/or unimportant equipment may be better served by a reactive or predictive maintenance approach. Each of the aforementioned factors are

169

ENERGY STAR Certified Buildings & Plants : ENERGY STAR  

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

Processing (13) Petroleum Refinery (9) Pharmaceutical Manufacturing (8) Wet Corn Milling (7) * Total does not include data centers Select Label Year 2013 2012 2011 2010 2009...

170

JGI - DOE Bioenergy Research Centers  

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

DOE Bioenergy Research Centers DOE Bioenergy Research Centers DOE JGI performs sequencing on behalf of the U.S. Department of Energy Bioenergy Research Centers. The Centers are intended to accelerate basic research in the development of cellulosic ethanol and other biofuels, advancing the federal initiative that seeks to reduce U.S. gasoline consumption by 20% within 10 years through increased efficiency and diversification of clean energy sources. The three Centers are located in geographically distinct areas and use different plants both for laboratory research and for improving feedstock crops. DOE BioEnergy Science Center led by DOE's Oak Ridge National Laboratory in Oak Ridge, Tennessee. This center will focus on the resistance of plant fiber to breakdown into sugars and is studying the potential energy crops

171

Conversion of neutron stars to strange stars as the central engine of gamma-ray bursts  

E-Print Network (OSTI)

We study the conversion of a neutron star to a strange star as a possible energy source for gamma-ray bursts. We use different recent models for the equation of state of neutron star matter and strange quark matter. We show that the total amount of energy liberated in the conversion is in the range of (1-4) 10^{53} ergs (one order of magnitude larger than previous estimates) and is in agreement with the energy required to power gamma-ray burst sources at cosmological distances.

Ignazio Bombaci; Bhaskar Datta

2000-01-27T23:59:59.000Z

172

ENERGY STAR ® Enterprise Storage Draft Specification Framework  

E-Print Network (OSTI)

This document describes the key building blocks that form the basis for every ENERGY STAR specification; these items are intended to provide the framework around which the EPA can develop an effective energy efficiency program for Enterprise Storage. The principal objectives for this ENERGY STAR specification are threefold: (1) to encourage widespread adoption of appropriate hardware and software strategies to improve energy efficiency in enterprise storage systems, (2) to provide purchasers with the means to identify the most energy efficient enterprise storage solutions for their specific end-use application, and (3) to provide tools and information to designers and mangers looking to improve the efficiency of data center operations. The purpose of each building block is provided under the subheadings below, along with EPA’s preliminary thoughts on how each may ultimately be incorporated into the Version 1.0 Enterprise Storage specification. At the end of each section are a series of questions aimed at generating discussion about the proposed approach. Please note that this document is not intended to be a comprehensive review of the ENERGY STAR perspective on enterprise storage, rather it serves as a starting point for EPA’s specification development efforts. Stakeholders are encouraged to provide feedback on the specific concepts and definitions presented in this document, and are also welcome to submit comments of a more general nature. Communication between EPA and industry stakeholders is critical to the success of the ENERGY STAR program, especially in this early stage of the specification development process. Any and all creative suggestions for improvements to the basic ENERGY STAR approach outlined in this document will be considered for inclusion in subsequent draft and final specifications. ENERGY STAR representatives are available for additional technical discussions with interested parties at any time during the specification development process. Please contact Steve Pantano, ICF International, at

unknown authors

2009-01-01T23:59:59.000Z

173

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. XI. RR Lyrae Stars in the Galactic Bulge  

E-Print Network (OSTI)

The eleventh part of the OGLE-III Catalog of Variable Stars (OIII-CVS) contains 16836 RR Lyr stars detected in the OGLE fields toward the Galactic bulge. The total sample is composed of 11756 RR Lyr stars pulsating in the fundamental mode (RRab), 4989 overtone pulsators (RRc), and 91 double-mode (RRd) stars. About 400 RR Lyr stars are members of the Sagittarius Dwarf Spheroidal Galaxy. The catalog includes the time-series photometry collected in the course of the OGLE survey, basic parameters of the stars, finding charts, and cross-identifications with other catalogs of RR Lyr stars toward the Milky Way center. We notice that some RRd stars in the Galactic bulge show unusually short periods and small ratio of periods, down to P_F=0.35 days and P_1O/P_F=0.726. In the Petersen diagram double-mode RR Lyr stars form a parabola-like structure, which connects shorter- and longer-period RRd stars. We show that the unique properties of the bulge RRd stars may be explained by allowing for the wide range of the metal a...

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

2011-01-01T23:59:59.000Z

174

Hypernuclear Physics for Neutron Stars  

E-Print Network (OSTI)

The role of hypernuclear physics for the physics of neutron stars is delineated. Hypernuclear potentials in dense matter control the hyperon composition of dense neutron star matter. The three-body interactions of nucleons and hyperons determine the stiffness of the neutron star equation of state and thereby the maximum neutron star mass. Two-body hyperon-nucleon and hyperon-hyperon interactions give rise to hyperon pairing which exponentially suppresses cooling of neutron stars via the direct hyperon URCA processes. Non-mesonic weak reactions with hyperons in dense neutron star matter govern the gravitational wave emissions due to the r-mode instability of rotating neutron stars.

Jurgen Schaffner-Bielich

2008-01-24T23:59:59.000Z

175

Service providers | ENERGY STAR  

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

buildings and industrial plants. Photo of a man with a clipboard. Verify applications for ENERGY STAR certification Find how-to guides and training for individuals who sign off on...

176

Kurucz model energy distributions: a comparison with real stars. II. Metal-deficient stars  

E-Print Network (OSTI)

Energy distributions of synthetic spectra for Kurucz model atmospheres are compared with observed energy distributions of metal-deficient stars of the blue horizontal-branch (BHB), F-G-K subdwarf (SD) and G-K giant (MDG) types. The best coincidence of the synthetic and observed energy curves is found for BHB stars. The largest differences are found in the ultraviolet wavelengths for subdwarfs and cool MDGs. The influence of errors of effective temperatures, gravities and metallicities is estimated.

V. Straizys; R. Lazauskaite; G. Valiauga

2002-12-04T23:59:59.000Z

177

Energy Star Lighting Verification Program (Program for the Evaluation and Analysis of Residential Lighting)  

SciTech Connect

The Program for the Evaluation and Analysis of Residential Lighting (PEARL) is a watchdog program. It was created in response to complaints received by utility program managers about the performance of certain Energy Star lighting products being promoted within their service territories and the lack of a self-policing mechanism within the lighting industry that would ensure the reliability of these products and their compliance with ENERGY STAR specifications. To remedy these problems, PEARL purchases and tests products that are available to the consumers in the marketplace. The Lighting Research Center (LRC) tests the selected products against the corresponding Energy Star specifications. This report includes the experimental procedure and data results of Cycle Three of PEARL program during the period of October 2002 to April 2003, along with the description of apparatus used, equipment calibration process, experimental methodology, and research findings from the testing. The products tested are 20 models of screw-based compact fluorescent lamps (CFL) of various types and various wattages made or marketed by 12 different manufacturers, and ten models of residential lighting fixtures from eight different manufacturers.

Conan O'Rourke; Yutao Zhou

2006-03-01T23:59:59.000Z

178

Center Research  

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

5 5 Center Research ... Supports Electric Utility Restructuring Winds of change in the U.S. power sector: factors listed in the left column have created a gap between the prices utilities must charge to recover their embedded costs and the lower rates they would have to charge in a competitive environment. Possible responses to these pressures are listed to the right. The electricity industry in the U.S. is being dramatically restructured by state regulatory commissions and the Federal Energy Regulatory Commission. Efforts are underway to create a wholesale market for electricity, with wholesale prices to distributing utility companies no longer being regulated. Discussions in several states and at the FERC are aimed at revising the regulation of the structure, operation, and pricing of the

179

KILLGORE CENTER  

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

LEASE AGREEMENT NO. DE-AC04-89-AL42 1 10 LEASE AGREEMENT NO. DE-AC04-89-AL42 1 10 KILLGORE CENTER AMENDMENT NO. 6 Lease Agreement No. DE-AC04-89-AL-42110, between the U.S. Department of Energy and Texas Tech University, dated October 1, 1989, as amended (amendments one, two, three, four, and five), is hereby further amended as follows: Article I1 of the base lease entitled, "TERM AND RENT," paragraph A., is hereby deleted and revised to read: A. The term of this Lease is extended for five years beginning October 1, 2009, and ending September 30, 2014. The annual rental for this term shall be as indicated in the following rate schedule determined as follows: 1. Approximately 6,680 square feet of office space. $ 58,280.00 2. Approximately 380 square feet of space in the foyer. $ 3,314.00

180

Energy Star for Hospitals 2011 Update: Progression or Regression?  

E-Print Network (OSTI)

The Energy Star performance rating system for buildings has achieved widespread adoption in the building sector as a standard benchmark for energy performance. In 2011, the U.S. EPA released an updated technical methodology for its Energy Star performance rating system for hospitals, shifting how the score is calculated. The new rating system, similar to the previous rating system, is still a poor metric for benchmarking hospitals and should be used with caution. The aim of this paper is to critique the methodology used in the Energy Star for Hospitals 2011 Update. The paper reviews the changes between the 2001 methodology and 2011 methodology, how Energy Star views usage of different fuel types in its score, and lastly items that did not change in the 2011 hospital methodology update which are still causing confusion amongst Energy Star users and are causing significant error in the Energy Star score calculations.

Travis, B.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Chemical abundance studies of CP stars in open clusters  

E-Print Network (OSTI)

In stellar astrophysics, the study of the atmospheres of early-type stars plays a very special role. The atmospheres of these stars display a variety of different phenomena, such as the presence of large magnetic fields, strong surface convection, pulsation, diffusion of chemical elements. In particular, about 10% of early F-, A- and late B-type stars present chemical peculiarities, which rise as a result of diffusion. A detailed study of the evolution of the chemical peculiarities as traces of diffusion processes requires the precise knowledge of stellar ages and initial chemical composition. Open clusters provide these information: 1) it is possible to assume that all cluster members have approximately the same original chemical composition and age; 2) the age of stars belonging to open clusters can be determined with much higher accuracy than for field stars. For this reason chemically peculiar stars member of open clusters have been targeted to study the evolution of the chemical peculiarities primarily t...

Fossati, Luca

2013-01-01T23:59:59.000Z

182

Current Status of Transverse Spin at STAR  

E-Print Network (OSTI)

The origins of the proton spin remain an area of active investigation. The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Lab uniquely provides polarized proton data at high center of mass energies. STAR has previously reported large transverse single spin asymmetries for inclusive neutral pion production in the forward direction at square root of s of 200 GeV, measured with a modular Pb-glass calorimeter called the "Forward Pion Detector" (FPD). Beginning in 2008 (Run 8), STAR's forward calorimetry was significantly enhanced with the commissioning of the "Forward Meson Spectrometer" (FMS), which has full azimuthal coverage in the pseudo-rapidity range 2.5 to 4.2. This detector has extended asymmetry measurements to higher transverse momentum, and its large areal coverage enables measurements of higher mass resonances and "jet-like" correlations. STAR also provides excellent tracking and full azimuthal electromagnetic calorimeter coverage at mid-rapidity, which facilitates analyses of spin-dependent jet structure. Here we review recent transverse spin measurements with the STAR detector and also present an update on some existing analyses.

Andrew Gordon for the STAR Collaboration

2010-07-29T23:59:59.000Z

183

ARM - External Data Center  

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

govExternal Data Center External Data Center Order Data Description of External Data Streams Data Viewers and Plots (selected data sets) XDC Documentation External Data Center The...

184

CEBAF Center - Cavity Display  

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

CEBAF Center - Cavity Display Building Exterior 1st Floor Cafeteria Cavity Display CEBAF Center Auditorium Eating Area UserInternational Liaison Office 2nd Floor Computer Center...

185

Stability windows for proto-quark stars  

E-Print Network (OSTI)

We investigate the existence of possible stable strange matter and related stability windows at finite temperature for different models that are generally applied to describe quark stars, namely, the quark-mass density dependent model, the MIT bag model and the Nambu-Jona-Lasinio model. We emphasize that, although the limits for stable strange matter depend on a comparison with the ground state of 56Fe, which is a zero temperature state, the quantity that has to be used in the search for strange matter in proto-quark stars is the free energy and we analyze stability windows up to temperatures of the order of 40 MeV. The effects of strong magnetic fields on stability windows are computed and the resulting mass-radius relations for different stages of the proto-quark star are analyzed.

V. Dexheimer; J. R. Torres; D. P. Menezes

2013-03-20T23:59:59.000Z

186

ENERGY STAR industrial partnership | ENERGY STAR Buildings & Plants  

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

ENERGY STAR industrial partnership ENERGY STAR industrial partnership Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Improve energy performance ENERGY STAR industrial partnership New ENERGY STAR industrial partners Energy guides Energy efficiency and air regulation

187

Use ENERGY STAR benchmarking tools | ENERGY STAR Buildings & Plants  

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

Use ENERGY STAR benchmarking tools Use ENERGY STAR benchmarking tools Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use Learn about benchmarking Use ENERGY STAR benchmarking tools ENERGY STAR in action Communicate and educate

188

ENERGY STAR | Open Energy Information  

Open Energy Info (EERE)

ENERGY STAR ENERGY STAR Jump to: navigation, search Logo: ENERGY STAR Name ENERGY STAR Year founded 1992 Notes Partnered with more than 20,000 public sector organizations. Website https://www.energystar.gov/ind References About ENERGY STAR[1] LinkedIn Connections Contents 1 About ENERGY STAR 1.1 For the Home 1.2 For Business 1.3 References About ENERGY STAR ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy helping us all save money and protect the environment through energy efficient products and practices. Results are already adding up. Americans, with the help of ENERGY STAR, saved enough energy in 2010 alone to avoid greenhouse gas emissions equivalent to those from 33 million cars - all while saving nearly $18 billion on their

189

Neutron Stars and the Cosmological Constant Problem  

E-Print Network (OSTI)

The gravitational aether theory is a modification of general relativity that decouples vacuum energy from gravity, and thus can potentially address the cosmological constant problem. The classical theory is distinguishable from general relativity only in the presence of relativistic pressure (or vorticity). Since the interior of neutron stars has high pressure and as their mass and radius can be measured observationally, they are the perfect laboratory for testing the validity of the aether theory. In this paper, we solve the equations of stellar structure for the gravitational aether theory and find the predicted mass-radius relation of non-rotating neutron stars using two different realistic proposals for the equation of state of nuclear matter. We find that the maximum neutron star mass predicted by the aether theory is 12% - 16% less than the maximum mass predicted by general relativity assuming these two equations of state. We also show that the effect of aether is similar to modifying the equation of state in general relativity. The effective pressure of the neutron star given by the aether theory at a fiducial density differs from the values given by the two nuclear equations of state to an extent that can be constrained using future gravitational wave observations of neutron stars in compact systems. This is a promising way to test the aether theory if further progress is made in constraining the equation of state of nuclear matter in densities above the nuclear saturation density.

Farbod Kamiab; Niayesh Afshordi

2011-04-29T23:59:59.000Z

190

Neutron star/supernova remnant associations: the view from Tbilisi  

E-Print Network (OSTI)

We propose a new approach for studying the neutron star/supernova remnant associations, based on the idea that the supernova remnants (SNRs) can be products of an off-centered supernova (SN) explosion in a preexisting bubble created by the wind of a moving massive star. A cavity SN explosion of a moving star results in a considerable offset of the neutron star (NS) birth-place from the geometrical center of the SNR. Therefore: a) the high transverse velocities inferred for a number of NSs through their association with SNRs can be reduced; b) the proper motion vector of a NS should not necessarily point away from the geometrical center of the associated SNR. Taking into account these two facts allow us to enlarge the circle of possible NS/SNR associations, and could significantly affect the results of previous studies of associations. The possibilities of our approach are illustrated with some examples. We also show that the concept of an off-centered cavity SN explosion could be used to explain the peculiar structures of a number of SNRs and for searches for stellar remnants possibly associated with them.

V. V. Gvaramadze

2002-08-01T23:59:59.000Z

191

METALLICITY GRADIENTS OF THICK DISK DWARF STARS  

Science Conference Proceedings (OSTI)

We examine the metallicity distribution of the Galactic thick disk using F, G, and K dwarf stars selected from the Sloan Digital Sky Survey, Data Release 8. Using the large sample of dwarf stars with proper motions and spectroscopically determined stellar parameters, metallicity gradients in the radial direction for various heights above the Galactic plane and in the vertical direction for various radial distances from the Galaxy center have been found. In particular, we find a vertical metallicity gradient of -0.113 {+-} 0.010 (-0.125 {+-} 0.008) dex kpc{sup -1} using an isochrone (photometric) distance determination in the range 1 kpc solar neighborhood. Metallicity gradients in the thin and thick disks are important probes into possible formation scenarios for our Galaxy and a consistent picture is beginning to emerge from results using large spectroscopic surveys, such as the ones presented here.

Carrell, Kenneth; Chen Yuqin; Zhao Gang, E-mail: carrell@nao.cas.cn [Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 (China)

2012-12-01T23:59:59.000Z

192

Data Center Report to Congress -FINAL 7-25-07.doc  

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

Server and Data Center Energy Efficiency Server and Data Center Energy Efficiency Public Law 109-431 U.S. Environmental Protection Agency ENERGY STAR Program August 2, 2007 Table of Contents Table of Contents............................................................................................................................. i Executive Summary ........................................................................................................................ 4 Background ................................................................................................................................. 4 Energy Use in Data Centers Through 2011 ................................................................................ 7 Incentives and Voluntary Programs to Promote Energy Efficiency ......................................... 11

193

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

WWNA Monthly; Largo, FL WWNA Monthly; Largo, FL 110406202 Accutest Job Number: F25982 Sampling Date: 08/10/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

194

S M Stoller Star Center-B100  

Office of Legacy Management (LM)

B100 B100 Monthly Sampling, 110406202 Accutest Job Number: F25245 Sampling Date: 07/06/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

195

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

WWNA Monthly; Largo, FL WWNA Monthly; Largo, FL 7030-226 Accutest Job Number: F33038 Sampling Date: 07/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

196

ENERGY STAR Success Story: The Virginia Beach Convention Center...  

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

of their age and building systems they employ, can reduce energy consumption, save money, and offset greenhouse gas emissions by implementing low-cost, high-return energy...

197

S M Stoller Star Center-B100  

Office of Legacy Management (LM)

B100 B100 7030-226/Monthly Accutest Job Number: F27169 Sampling Date: 10/05/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director

198

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

7170 7170 Sampling Date: 10/05/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director e-Hardcopy 2.0 Automated Report 12 1 of 12

199

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

227 227 Sampling Dates: 03/31/04 - 04/01/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director e-Hardcopy 2.0 Automated Report

200

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

WWNA Monthly; Largo, FL WWNA Monthly; Largo, FL 7031-226 Accutest Job Number: F36361 Sampling Date: 11/03/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D.

Note: This page contains sample records for the topic "difference star center" 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.


201

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

124 124 Sampling Date: 01/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director e-Hardcopy 2.0 Automated Report 18 1 of 18

202

S M Stoller Quarterly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

531 531 Sampling Date: 04/16/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director e-Hardcopy 2.0 Automated Report 21 1 of 21

203

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

8014 8014 Sampling Date: 11/09/04 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director e-Hardcopy 2.0 Automated Report 12 1 of 12

204

S M Stoller Star Center-B100  

Office of Legacy Management (LM)

B100 B100 110406202 Accutest Job Number: F33040 Sampling Date: 07/06/05 Report to: S M Stoller Cathy.Kelleher@gjo.doe.gov ATTN: Cathy Kelleher Total number of pages in report: Certifications: FL (DOH E83510), NC (573), NJ (FL002), MA (FL946), IA (366), LA (03051), KS (E-10327), SC, AK This report shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel: 407-425-6700 * fax: 407-425-0707 * http://www.accutest.com Test results contained within this data package meet the requirements of the National Environmental Laboratory Accreditation Conference and/or state specific certification programs as applicable. Harry Behzadi, Ph.D. Laboratory Director

205

ENERGY STAR Success Story: Reuben H. Fleet Science Center | ENERGY...  

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

Federal agency resources Grocery & convenience stores resources Healthcare resources Higher education resources Home-based business resources Hospitality resources Industrial...

206

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

- - - - iE - DW - DRINKINO WAT@R GW - GROUND WATER WW- WASTE WATER so- SOIL OL- SLUWE a- OIL Lm - OTHER LIQUID SQL - OTHER BOUO LAB USE ONLY 4. WlMOUlW4LD By: DATE nun: nrcENelp...

207

S M Stoller Monthly Sampling, STAR Center, Largo, FL  

Office of Legacy Management (LM)

applicable: * Chain of Custody 16 of 18 4 -- ADDRESS ' Lx',, ' fL' -wt-q3 MiSy STATE ZIP PROJECT NO. CHAIN OF CUSTO ACCUTEST 4405 VINELAND ROAD l SUITE C-15 STANDARD 7 48 HOUR...

208

S M Stoller Star Center-WWNA Monthly; Largo, FL  

Office of Legacy Management (LM)

shall not be reproduced, except in its entirety, without the written approval of Accutest Laboratories. Southeast * 4405 Vineland Road * Suite C-15 * Orlando, FL 32811 * tel:...

209

ENERGY STAR Success Story: San Diego Convention Center | ENERGY...  

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

online energy management and tracking tool, Portfolio Manager, the SDCCC tracked its energy consumption and has improved the facility's overall performance. This two-page...

210

CenterPoint Energy - ENERGY STAR Homes Efficiency Program (Texas...  

Open Energy Info (EERE)

15% more efficient than the 2009 IECC. Incentives are tied directly to the amount of energy savings. Depending upon the physical location of the home, homes will be paid based...

211

S M Stoller Monthly Sampling (Pinellas Co), STAR Center, Largo...  

Office of Legacy Management (LM)

ID I POINT OF COLLECTION LAB USE ONLY - - - - - - - - I 1 48 HOUR RUSH 3 24 HOUR EMERGENCY 3 OTHER 0 COMMERCIAL 'B" 0 DISK DELIVERABLE 0 STATE FORMS q OTHER (SPECIFY)...

212

ENERGY STAR Focus on Energy Efficiency in Printing | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

213

ENERGY STAR certification for your building | ENERGY STAR  

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

that your building can earn ENERGY STAR certification just like a refrigerator or light bulb? The mark of efficiency No matter where you see it, the ENERGY STAR label means the...

214

ENERGY STAR Small Business Network List | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

215

ENERGY STAR Guidelines for Energy Management | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

216

ENERGY STAR Partner of the Year Awards | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

217

Earn the ENERGY STAR and other recognition | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

218

ENERGY STAR portfolio-wide recognition | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

219

ENERGY STAR Commercial Buildings College Course | ENERGY STAR  

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

and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program...

220

Making Carbon in Stars  

E-Print Network (OSTI)

The triple alpha process plays an important role in the production of 12C in stars. Its rate is known with an accuracy of about 12%. We examine the corresponding uncertainties introduced in the description of pre-supernova stars, of nucleosynthesis in a core-collapse SN explosion, and of the production of 12C during the third dredge-up in asymptotic giant branch (AGB) stars. For the AGB case we consider also the effects of uncertainties in the 14N(p,gamma)15O rate. We conclude that the present accuracy of the triplr alpha rate is inadequate and describe new experiments that will lead to a more accurate value.

Sam M. Austin

2004-11-30T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Non-Stationary Star and the Trajectory of a Circulating Test Body  

E-Print Network (OSTI)

A simple model of a spherically symmetric, pulsating star is calculated. The application to the Sun gives a 166-min radial pulsation. The theory of gravitation in flat space-time implies for a spherically symmetric, nonstationary star small time-dependent exterior gravitational effects. The perturbed equations of motion of a test body moving around the non-stationary star are given. The test body moves away from the center during the epoch of collapsing star and moves towards the center during the epoch of expanding star but the converse is also possible under some conditions. The application to the Sun-Earth system is too small to be measured. This effect may be measurable for very compact, non-stationary objects circulated of a nearby test body.

Walter Petry

2010-02-06T23:59:59.000Z

222

ATOMIC HYDROGEN IN A GALACTIC CENTER OUTFLOW  

SciTech Connect

We describe a population of small, high-velocity, atomic hydrogen clouds, loops, and filaments found above and below the disk near the Galactic center. The objects have a mean radius of 15 pc, velocity widths of {approx}14 km s{sup -1}, and are observed at |z| heights up to 700 pc. The velocity distribution of the clouds shows no signature of Galactic rotation. We propose a scenario where the clouds are associated with an outflow from a central star-forming region at the Galactic center. We discuss the clouds as entrained material traveling at {approx}200 km s{sup -1} in a Galactic wind.

McClure-Griffiths, N. M.; Green, J. A.; Hill, A. S. [Australia Telescope National Facility, CSIRO Astronomy and Space Science, Marsfield, NSW 2122 (Australia); Lockman, F. J. [National Radio Astronomy Observatory, Green Bank, WV 24944 (United States); Dickey, J. M. [School of Physics and Mathematics, University of Tasmania, TAS 7001 (Australia); Gaensler, B. M.; Green, A. J., E-mail: naomi.mcclure-griffiths@csiro.au [Sydney Institute for Astronomy, School of Physics, The University of Sydney, NSW 2006 (Australia)

2013-06-10T23:59:59.000Z

223

Birth of Supermassive Black holes and Star Formation after the Big Bang  

E-Print Network (OSTI)

Modern observations of star formation in different galaxies contradicts with the current star formation theories. There are few questions and observations where current star formation theories were not able to explain well. This paper proposes an alternative theory of Star formation and birth of Supermassive Black holes after the Big Bang, which can answer the contradictions without violating the physics laws and fit perfectly well with the modern observations.

A Paramashivam

2013-01-01T23:59:59.000Z

224

ENERGY STAR Score for Hotels  

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

Hotels in the United States Page 1 ENERGY STAR Score for Hotels in the United States Technical Reference OVERVIEW The ENERGY STAR Score for Hotels applies to properties renting...

225

Barron Electric Cooperative - Energy Star Appliance & Energy...  

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

Barron Electric Cooperative - Energy Star Appliance & Energy Efficient Lighting Rebate Program Barron Electric Cooperative - Energy Star Appliance & Energy Efficient Lighting...

226

THE STAR FORMATION HISTORY OF M32  

SciTech Connect

We use deep Hubble Space Telescope Advanced Camera for Surveys/High Resolution Channel observations of a field within M32 (F1) and an M31 background field (F2) to determine the star formation history (SFH) of M32 from its resolved stellar population. We find that 2-5 Gyr old stars contribute {approx}40% {+-} 17% of M32's mass, while {approx}55% {+-} 21% of M32's mass comes from stars older than 5 Gyr. The mass-weighted mean age and metallicity of M32 at F1 are (Age) = 6.8 {+-} 1.5 Gyr and ([M/H]) = -0.01 {+-} 0.08 dex. The SFH additionally indicates the presence of young (<2 Gyr old), metal-poor ([M/H] {approx} -0.7) stars, suggesting that blue straggler stars contribute {approx}2% of the mass at F1; the remaining {approx}3% of the mass is in young metal-rich stars. Line-strength indices computed from the SFH imply a light-weighted mean age and metallicity of 4.9 Gyr and [M/H] = -0.12 dex, and single stellar population-equivalent parameters of 2.9 {+-} 0.2 Gyr and [M/H] = 0.02 {+-} 0.01 dex at F1 ({approx}2.7 r{sub e} ). This contradicts spectroscopic studies that show a steep age gradient from M32's center to 1 r{sub e} . The inferred SFH of the M31 background field F2 reveals that the majority of its stars are old, with {approx}95% of its mass already acquired 5-14 Gyr ago. It is composed of two dominant populations; {approx}30% {+-} 7.5% of its mass is in a 5-8 Gyr old population, and {approx}65% {+-} 9% of the mass is in an 8-14 Gyr old population. The mass-weighted mean age and metallicity of F2 are (Age) = 9.2 {+-} 1.2 Gyr and ([M/H]) = -0.10 {+-} 0.10 dex, respectively. Our results suggest that the inner disk and spheroid populations of M31 are indistinguishable from those of the outer disk and spheroid. Assuming the mean age of M31's disk at F2 ({approx}1 disk scale length) to be {approx}5-9 Gyr, our results agree with an inside-out disk formation scenario for M31's disk.

Monachesi, Antonela; Trager, Scott C. [Kapteyn Astronomical Institute, P.O. Box 800, 9700 AV Groningen (Netherlands); Lauer, Tod R.; Mighell, Kenneth J. [National Optical Astronomy Observatory, P.O. Box 26732, Tucson, AZ 85726 (United States); Hidalgo, Sebastian L. [Instituto de Astrofisica de Canarias, Via Lactea s/n, E-38200 La Laguna, Tenerife (Spain); Freedman, Wendy; Dressler, Alan [The Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); Grillmair, Carl, E-mail: antonela@umich.edu [Spitzer Science Center, 1200 East California Boulevard, Pasadena, CA 91125 (United States)

2012-01-20T23:59:59.000Z

227

Learn the benefits | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

228

About the battle | ENERGY STAR  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

229

Guidance for Preparing ENERGY STAR Challenge for Industry Plant Profile  

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

Long Beach Douglas Center Long Beach Douglas Center The Boeing Company 4000 Lakewood Blvd. Long Beach, CA 90808 The Boeing Long Beach Douglas Center campus hosts a wide array of activities supporting the development of commercial airplanes including: Airplane Programs Engineering, Product Support Engineering, Modification Services, Spares, and Continental Data Graphics. This site achieved the Challenge for Industry in 2010, 2011 and 2012. Achieving the ENERGY STAR Challenge for Industry has been a key factor in Boeing's 'four walls' strategy to reduce energy usage and waste along with reducing the environmental footprint of its operations. The energy savings was achieved by upgrading air-conditioning, lighting and energy-management systems,

230

High-gravity central stars  

E-Print Network (OSTI)

NLTE spectral analyses of high-gravity central stars by means of state-of-the-art model atmosphere techniques provide information about the precursor AGB stars. The hydrogen-deficient post-AGB stars allow investigations on the intershell matter which is apparently exhibited at the stellar surface. We summarize recent results from imaging, spectroscopy, and spectropolarimetry.

Thomas Rauch

2006-07-11T23:59:59.000Z

231

Energy efficient data centers  

E-Print Network (OSTI)

2 Manage airflow to reduce energy required for cooling andallocate resources 39 Create an Energy Star standard forservers a: Low Energy Ventilation and

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

232

ENERGY STAR service and product provider training series | ENERGY STAR  

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

service and product provider training series service and product provider training series Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can ENERGY STAR help your business? Get started Join ENERGY STAR as a partner ENERGY STAR service & product provider training series Service and product provider's marketing toolkit ENERGY STAR sales tools for service and product providers

233

ENERGY STAR plant certification | ENERGY STAR Buildings & Plants  

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

» ENERGY STAR plant certification » ENERGY STAR plant certification Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Improve energy performance Industrial service and product providers Earn recognition ENERGY STAR Partner of the Year Award

234

Campaigns and incentive programs that incorporate ENERGY STAR | ENERGY STAR  

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

Campaigns and incentive programs that incorporate ENERGY STAR Campaigns and incentive programs that incorporate ENERGY STAR Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Policies that specify the use of ENERGY STAR tools Campaigns and incentive programs that incorporate ENERGY STAR Lead by example Gather support Develop programs and policies Host a competition Use financing vehicles

235

Window To The Stars  

E-Print Network (OSTI)

We present Window To The Stars, a graphical user interface to the popular TWIN single/binary stellar evolution code, for novices, students and professional astrophysicists. It removes the drudgery associated with the traditional approach to running the code, while maintaining the power, output quality and flexibility a modern stellar evolutionist requires. It is currently being used for cutting edge research and interactive teaching.

Robert G. Izzard; Evert Glebbeek

2006-07-27T23:59:59.000Z

236

About ENERGY STAR for commercial and industrial buildings | ENERGY STAR  

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

ENERGY STAR for commercial and industrial buildings ENERGY STAR for commercial and industrial buildings Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Find out who's partnered with ENERGY STAR Become an ENERGY STAR partner Find ENERGY STAR certified buildings and plants ENERGY STAR certification Featured research and reports Facts and stats Climate change and buildings

237

Earn ENERGY STAR certification | ENERGY STAR Buildings & Plants  

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

Earn ENERGY STAR certification Earn ENERGY STAR certification Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Build an energy program Improve building and plant performance Earn the ENERGY STAR and other recognition Benchmark energy use ENERGY STAR in action Communicate and educate ENERGY STAR communications toolkit Bring Your Green to Work with ENERGY STAR

238

A Minimum Column Density of 1 g cm^-2 for Massive Star Formation  

E-Print Network (OSTI)

Massive stars are very rare, but their extreme luminosities make them both the only type of young star we can observe in distant galaxies and the dominant energy sources in the universe today. They form rarely because efficient radiative cooling keeps most star-forming gas clouds close to isothermal as they collapse, and this favors fragmentation into stars ~ 1 g cm^-2 can avoid fragmentation and form massive stars. This threshold, and the environmental variation of the stellar initial mass function (IMF) that it implies, naturally explain the characteristic column densities of massive star clusters and the difference between the radial profiles of Halpha and UV emission in galactic disks. The existence of a threshold also implies that there should be detectable variations in the IMF with environment within the Galaxy and in the characteristic column densities of massive star clusters between galaxies, and that star formation rates in some galactic environments may have been systematically underestimated.

Mark R. Krumholz; Christopher F. McKee

2008-01-02T23:59:59.000Z

239

Halo Star Evolution  

E-Print Network (OSTI)

In this review, I will discuss a few problems which point to the need for improved stellar evolution models of halo stars. Current stellar evolution models do not match the observed $^7$Li abundance patterns, suggesting that the input physics and/or the assumptions used in constructing the models are in need of revision. It appears that all halo stars have suffered some $^7$Li depletion, implying that the primordial $^7$Li abundance is higher than that presently observed in hot halo stars. Observations of abundances of various elements in globular cluster giant branch stars have suggested for some time now that some form of deep mixing, which is not present in theoretical models, occurs in halo stars. The driving mechanism for this mixing, and its incorporation into stellar models remain one of the key problems in stellar modeling. Current theoretical isochrones are able to provide a good match to observed colour-magnitude diagrams. However, there is some evidence that the theoretical luminosity functions are in disagreement with observations. This is an area which requires further study, as it suggests that the relative main sequence/giant branch lifetimes predicted by the models are incorrect. A discussion of some of the uncertainties involved in determining the ages of globular clusters is presented. The absolute ages of globular clusters provide a lower bound to the age of the universe, and so are of great interest to cosmologists. Unfortunately, present uncertainties in stellar models lead to a rather large range in the inferred ages of globular clusters of 11 -- 18 Gyr.

Brian Chaboyer

1995-09-08T23:59:59.000Z

240

Cerenkov radiation and scalar stars  

E-Print Network (OSTI)

We explore the possibility that a charged particle moving in the gravitational field generated by a scalar star could radiate energy via a recently proposed gravitational \\v{C}erenkov mechanism. We numerically prove that this is not possible for stable boson stars. We also show that soliton stars could have \\v{C}erenkov radiation for particular values of the boson mass, although diluteness of the star grows and actual observational possibility decreases for the more usually discussed boson masses. These conclusions diminish, although do not completely rule out, the observational possibility of actually detecting scalar stars using this mechanism, and lead us to consider other forms, like gravitational lensing.

S. Capozziello; G. Lambiase; Diego F. Torres

2000-06-23T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Materials Sustainability: Digital Resource Center - Center for ...  

Science Conference Proceedings (OSTI)

Jul 2, 2008 ... Focus on life cycle analyses for buildings, agriculture, transportation, renewable energy, and packaging. Source: Center for Sustainable ...

242

DARK MATTER POWERED STARS: CONSTRAINTS FROM THE EXTRAGALACTIC BACKGROUND LIGHT  

SciTech Connect

The existence of predominantly cold non-baryonic dark matter is unambiguously demonstrated by several observations (e.g., structure formation, big bang nucleosynthesis, gravitational lensing, and rotational curves of spiral galaxies). A candidate well motivated by particle physics is a weakly interacting massive particle (WIMP). Self-annihilating WIMPs would affect the stellar evolution especially in the early universe. Stars powered by self-annihilating WIMP dark matter should possess different properties compared with standard stars. While a direct detection of such dark matter powered stars seems very challenging, their cumulative emission might leave an imprint in the diffuse metagalactic radiation fields, in particular in the mid-infrared part of the electromagnetic spectrum. In this work, the possible contributions of dark matter powered stars (dark stars, DSs) to the extragalactic background light (EBL) are calculated. It is shown that existing data and limits of the EBL intensity can already be used to rule out some DS parameter sets.

Maurer, A.; Raue, M.; Kneiske, T.; Horns, D. [Institut fuer Experimentalphysik, Universitaet Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany); Elsaesser, D. [Institut fuer Theoretische Physik und Astrophysik, Am Hubland, D-97074 Wuerzburg (Germany); Hauschildt, P. H., E-mail: andreas.maurer@physik.uni-hamburg.de [Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg (Germany)

2012-02-01T23:59:59.000Z

243

Rotation and chemical abundances of Ap/Bp stars in the open cluster NGC 6475  

E-Print Network (OSTI)

The connection between age, rotation and chemical abundance of magnetic Ap stars is poorly understood. Using open clusters, we are able to study samples of stars that are both co-eval and co-environmental. By determining rotation and chemical abundance for Ap star members of clusters with various ages, the variations of these properties as a function of age and environment can be derived. All four probable Ap star members of the open cluster NGC 6475, as well as one normal late B star, were studied using detailed spectrum synthesis of high resolution UVES-POP spectra. Probable cluster membership was confirmed for all five stars, however chemical abundance anomalies only appear to be present in spectra of three. Projected rotational velocity and chemical abundances for 21 elements ranging from C to Eu are presented for the 5 stars. In the three peculiar stars we find overabundances of Si, Cr, Mn, Fe and rare earths such as Nd, characteristic of Ap stars. The set of chemically peculiar stars show fairly homogeneous abundance tables, however notable differences exist for a few elements. There also exist appreciable differences in the v sin i and main sequence evolutionary stage of the chemically peculiar stars. This may hint at the underlying processes giving rise to the observed abundance anomalies. With this first detailed study of chemical abundances of a complete sample of magnetic Ap/Bp stars in an open cluster, we have initiated an exploration of the environmental and evolutionary influence on chemical peculiarity.

C. P. Folsom; G. A. Wade; S. Bagnulo; J. D. Landstreet

2006-12-11T23:59:59.000Z

244

Chemical Hydrogen Storage Center Center of Excellence  

E-Print Network (OSTI)

Source Hydrogen H2 storage Hydrogen Stored Energy Point-of-use Chemical hydrogen storage #12;5 ChemicalChemical Hydrogen Storage Center Center of Excellence for Chemical Hydrogen Storage William Tumas proprietary or confidential information #12;2 Chemical Hydrogen Storage Center Overview Project Start Date: FY

Carver, Jeffrey C.

245

Alternative Fuels Data Center: Biodiesel Blends  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Blends to Blends to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Blends on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Blends on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Blends on Google Bookmark Alternative Fuels Data Center: Biodiesel Blends on Delicious Rank Alternative Fuels Data Center: Biodiesel Blends on Digg Find More places to share Alternative Fuels Data Center: Biodiesel Blends on AddThis.com... More in this section... Biodiesel Basics Blends Production & Distribution Specifications Related Links Benefits & Considerations Stations Vehicles Laws & Incentives Biodiesel Blends Biodiesel can be blended and used in many different concentrations, including B100 (pure biodiesel), B20 (20% biodiesel, 80% petroleum diesel),

246

Aircraft Integration and Flight Testing of 4STAR  

SciTech Connect

Under funding from the U.S. Dept. of Energy, in conjunction with a funded NASA 2008 ROSES proposal, with internal support from Battelle Pacific Northwest Division (PNWD), and in collaboration with NASA Ames Research Center, we successfully integrated the Spectrometer for Sky-Scanning, Sun-Tracking Atmospheric Research (4STAR-Air) instrument for flight operation aboard Battelle’s G-1 aircraft and conducted a series of airborne and ground-based intensive measurement campaigns (hereafter referred to as “intensives”) for the purpose of maturing the initial 4STAR-Ground prototype to a flight-ready science-ready configuration.

Flynn, CJ; Kassianov, E; Russell, P; Redemann, J; Dunagan, S; Holben, B

2012-10-12T23:59:59.000Z

247

Energy Star | Open Energy Information  

Open Energy Info (EERE)

Star Star Jump to: navigation, search Energystarlogo.jpg Contents 1 What's new 2 About ENERGY STAR 3 For the Home 4 For Business 5 History 6 References What's new On March 15, 2012, the EPA released a press release announcing 2012's ENERGY STAR award winners, and celebrating the 20 year anniversary of the award. Overall, the EPA estimates that American's have saved nearly $230 billion over two decades of the award. About ENERGY STAR ENERGY STAR is a joint program of the United States Environmental Protection Agency and the United States Department of Energy helping us all save money and protect the environment through energy efficient products and practices. Results are already adding up. Americans, with the help of ENERGY STAR, saved enough energy in 2009 alone to avoid greenhouse gas emissions

248

Energy efficient data centers  

E-Print Network (OSTI)

the data center’s power usage. Lighting accounts only 2% ofLighting HVAC - Chiller Plant The computer loads amount to 68% of the data center power usage.

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

249

ENERGY STAR Uninterruptible Power Supply Specification Framework  

E-Print Network (OSTI)

This document describes the key building blocks that form the basis for every ENERGY STAR specification; these items are intended to provide the framework around which the EPA can develop an effective energy efficiency program for Uninterruptible Power Supply (UPS) devices in data center, small office / home office, and home entertainment applications. The principal objectives for this ENERGY STAR specification are threefold: (1) to provide purchasers with the means to identify the most energy efficient UPS solutions for their specific end-use application, (2) to provide tools and information to designers and managers looking to improve the efficiency of data center operations, and (3) to provide uniform efficiency testing conditions and reporting criteria to enable an informed purchase decision and efficiency-oriented comparison of products. EPA will look to harmonize energy efficiency requirements, where appropriate, to minimize the number of competing standards in the marketplace. The purpose of each building block is provided under the subheadings below, along with EPA’s preliminary thoughts on how each may ultimately be incorporated into the Version 1.0

unknown authors

2010-01-01T23:59:59.000Z

250

LANSCE | Lujan Center | Publications  

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

Publications Publication acknowledgement Lujan Center monitors the number of papers published as a result of the use of our facilities. The Lujan Center's sponsoring agency, US...

251

Centers | ornl.gov  

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

Centers Centers SHARE Centers BioEnergy Science Center (BESC) The BioEnergy Science Center (BESC) is a multi-institutional (17 partners), multidisciplinary research (biological, chemical, physical and computational sciences, mathematics and engineering) organization focused on the fundamental understanding and elimination of biomass recalcitrance. DOE Energy Frontier Research Centers The Energy Frontier Research Centers program aims to accelerate such transformative discovery, combining the talents and creativity of our national scientific workforce with a powerful new generation of tools for penetrating, understanding, and manipulating matter on the atomic and molecular scales. ORNL is also home to two DOE Energy Frontier Research Centers, the Fluid Interface, Reactions, Structures and Transport (FIRST)

252

DOE Information Center  

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

DOE Information Center The U.S. Department of Energy (DOE) Information Center provides citizens a consolidated facility to obtain information and records related to the DOE's...

253

First National Technology Center  

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

9 10 First National Technology First National Technology Center Center The Nature of the Grid - Industrial Age Power - Normal Course Voltage Interruptions: 2-3 seconds Lights and...

254

Detector limitations, STAR  

Science Conference Proceedings (OSTI)

Every detector has limitations in terms of solid angle, particular technologies chosen, cracks due to mechanical structure, etc. If all of the presently planned parts of STAR [Solenoidal Tracker At RHIC] were in place, these factors would not seriously limit our ability to exploit the spin physics possible in RHIC. What is of greater concern at the moment is the construction schedule for components such as the Electromagnetic Calorimeters, and the limited funding for various levels of triggers.

Underwood, D. G.

1998-07-13T23:59:59.000Z

255

Stable dark energy stars  

E-Print Network (OSTI)

The gravastar picture is an alternative model to the concept of a black hole, where there is an effective phase transition at or near where the event horizon is expected to form, and the interior is replaced by a de Sitter condensate. In this work, a generalization of the gravastar picture is explored, by considering a matching of an interior solution governed by the dark energy equation of state, $\\omega\\equiv p/ \\rhosolution at a junction interface. The motivation for implementing this generalization arises from the fact that recent observations have confirmed an accelerated cosmic expansion, for which dark energy is a possible candidate. Several relativistic dark energy stellar configurations are analyzed by imposing specific choices for the mass function. The first case considered is that of a constant energy density, and the second choice, that of a monotonic decreasing energy density in the star's interior. The dynamical stability of the transition layer of these dark energy stars to linearized spherically symmetric radial perturbations about static equilibrium solutions is also explored. It is found that large stability regions exist that are sufficiently close to where the event horizon is expected to form, so that it would be difficult to distinguish the exterior geometry of the dark energy stars, analyzed in this work, from an astrophysical black hole.

Francisco S. N. Lobo

2005-08-28T23:59:59.000Z

256

Find an ENERGY STAR service and product provider | ENERGY STAR  

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

Find an ENERGY STAR service and product provider Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial...

257

Win ENERGY STAR Partner of the Year | ENERGY STAR  

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

Win ENERGY STAR Partner of the Year Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

258

EPA's ENERGY STAR National Building Competition | ENERGY STAR  

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

ENERGY STAR National Building Competition Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

259

How can ENERGY STAR help your business? | ENERGY STAR  

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

ENERGY STAR help your business? Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction...

260

Bring Your Green to Work with ENERGY STAR | ENERGY STAR  

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

Bring Your Green to Work with ENERGY STAR Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

Note: This page contains sample records for the topic "difference star center" 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

Join the ENERGY STAR Small Business Network | ENERGY STAR  

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

Join the ENERGY STAR Small Business Network Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

262

Celebrating a Decade of ENERGY STAR Buildings | ENERGY STAR  

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

Celebrating a Decade of ENERGY STAR Buildings Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new...

263

Verify applications for ENERGY STAR certification | ENERGY STAR  

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

Verify applications for ENERGY STAR certification Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial...

264

ENERGY STAR Success Story: HEI Hotels & Resorts | ENERGY STAR  

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

Story: HEI Hotels & Resorts HEI Hotels & Resorts is a growing hospitality company with 30 hotel properties in 13 states. Since launching its partnership with ENERGY STAR in 2006,...

265

Harnessing the Energy of the Stars | Department of Energy  

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

Harnessing the Energy of the Stars Harnessing the Energy of the Stars Harnessing the Energy of the Stars September 12, 2011 - 5:52pm Addthis A view of a cryogenically cooled National Ignition Facility (NIF) target as "seen" by the laser through the hohlraum's laser entrance hole. | Photo courtesy of Lawrence Livermore National Laboratory. A view of a cryogenically cooled National Ignition Facility (NIF) target as "seen" by the laser through the hohlraum's laser entrance hole. | Photo courtesy of Lawrence Livermore National Laboratory. Former Under Secretary Koonin Former Under Secretary Koonin Director - NYU's Center for Urban Science & Progress and Former Under Secretary for Science These are exciting times for fusion energy. Today I'm sharing that excitement with several hundred scientists at a conference on Inertial

266

Harnessing the Energy of the Stars | Department of Energy  

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

Harnessing the Energy of the Stars Harnessing the Energy of the Stars Harnessing the Energy of the Stars September 12, 2011 - 5:52pm Addthis A view of a cryogenically cooled National Ignition Facility (NIF) target as "seen" by the laser through the hohlraum's laser entrance hole. | Photo courtesy of Lawrence Livermore National Laboratory. A view of a cryogenically cooled National Ignition Facility (NIF) target as "seen" by the laser through the hohlraum's laser entrance hole. | Photo courtesy of Lawrence Livermore National Laboratory. Former Under Secretary Koonin Former Under Secretary Koonin Director - NYU's Center for Urban Science & Progress and Former Under Secretary for Science These are exciting times for fusion energy. Today I'm sharing that excitement with several hundred scientists at a conference on Inertial

267

ENERGY STAR SNAPSHOT - Spring 2009  

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

0 0 Snapshot data runs through June 30, 2010. Summary By mid-year 2010, commercial and industrial organizations have almost exceeded activity levels reached throughout all of 2009. From January through June 30, 2010: More than 80,000 buildings have benchmarked their energy usage with ENERGY STAR, of which 63,000 buildings received an ENERGY STAR energy performance score-nearly equivalent to the amount for all of 2009. Close to 3,200 buildings earned the ENERGY STAR label-the highest amount earned through two quarters of any year, and 80% higher than mid-year 2009. The ENERGY STAR Snapshot provides an at-a-glance summary of the latest national ENERGY STAR metrics to help you, our partners, see the impact of your efforts. The ENERGY STAR Snapshot is

268

Energy efficient data centers  

E-Print Network (OSTI)

cogeneration can improve reliability and increase chiller efficiency (by using waste heat) for larger data centers.

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

269

Thermodynamics Research Center Group  

Science Conference Proceedings (OSTI)

Thermodynamics Research Center. Welcome. TRC supplies thermodynamic properties tables, thermophysical properties data, models, standards ...

2012-11-14T23:59:59.000Z

270

Thermodynamics Research Center - Thermophysical ...  

Science Conference Proceedings (OSTI)

Thermodynamics Research Center. TRC supplies thermodynamic properties tables, thermophysical properties data, models, standards and ...

271

ENERGY STAR EEPS Partnership Agreement  

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

Approval expires 02/29/2016 1 EPA Form No. 5900-33 ENERGY STAR Partnership Agreement Instructions for Partnering with ENERGY STAR ® As an Energy Efficiency Program Sponsor Organizations interested in partnering with ENERGY STAR as an Energy Efficiency Program Sponsor should take the following steps: 1. Review the Energy Efficiency Program Sponsors Program Definitions and Program Requirements documents. 2. Select the area(s) of interest for a new partnership on the Participation Form. Please

272

ORISE: Center for Science Education  

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

Center for Science Education ORAU Center for Science Education ORAU Center for Science Education Completed in January 2009, the Center for Science Education was established to...

273

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

AFDC AFDC Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Alternative Fuels Data Center: Page Not Found Skip to Content Eere_header_logo U.S. Department of Energy Energy Efficiency and Renewable Energy EERE Home | Programs & Offices | Consumer Information Alternative Fuels Data Center Search Search Help Alternative Fuels Data Center Fuels & Vehicles Biodiesel | Diesel Vehicles

274

Snapshot (Spring 2012) | ENERGY STAR  

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

resources Small business resources State and local government resources Snapshot (Spring 2012) The ENERGY STAR Snapshot provides an at-a-glance summary of the key performance...

275

Building Technologies Program: ENERGY STAR®  

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

with ENERGY STAR DOE conducts research, development, and deployment to improve the energy efficiency of existing homes using a whole-building approach, which results in the...

276

A Mosque Among the Stars  

E-Print Network (OSTI)

A Mosque Among The Stars was the first anthology that dealt with the subject of Muslim characters and/or Islamic themes and Science Fiction.

Ahmad, Muhammad Aurangzeb; Khan, Ahmad

2007-01-04T23:59:59.000Z

277

Snapshot (Fall 2009) | ENERGY STAR  

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

to help ENERGY STAR partners see the impact of their efforts. It provides a look at: Trends in the energy performance rating of commercial and institutional buildings...

278

Snapshot (Spring 2009) | ENERGY STAR  

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

to help ENERGY STAR partners see the impact of their efforts. It provides a look at: Trends in the energy performance rating of commercial and institutional buildings...

279

Snapshot (Fall 2008) | ENERGY STAR  

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

to help ENERGY STAR partners see the impact of their efforts. It provides a look at: Trends in the energy performance rating of commercial and institutional buildings...

280

Snapshot (Spring 2008) | ENERGY STAR  

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

to help ENERGY STAR partners see the impact of their efforts. It provides a look at: Trends in the energy performance rating of commercial and institutional buildings...

Note: This page contains sample records for the topic "difference star center" 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

Industries in focus | ENERGY STAR  

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

ENERGY STAR Energy Performance Indicators for plants Industries in focus Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers...

282

Plant energy auditing | ENERGY STAR  

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

track, and benchmark Improve energy performance ENERGY STAR industrial partnership Energy guides Energy efficiency and air regulation Plant energy auditing Industrial...

283

Improve energy performance | ENERGY STAR  

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

track, and benchmark Improve energy performance ENERGY STAR industrial partnership Energy guides Energy efficiency and air regulation Plant energy auditing Industrial...

284

ENERGY STAR Petroleum Energy Guide  

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

183 ERNEST ORLANDO LAWRENCE BERKELEY NATIONAL LABORATORY Energy Efficiency Improvement and Cost Saving Opportunities For Petroleum Refineries An ENERGY STAR Guide for Energy and...

285

Energy Star Building Upgrade Manual  

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

program helping businesses and individuals fight global warming through superior energy efficiency. ENERGY STAR Building Upgrade Manual United States Environmental Protection...

286

Portable Data loggers | ENERGY STAR  

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

short list of companies that sell the products. Download more information about Portable Data Loggers here. Energy Efficient Products Learn about ENERGY STAR Products Save Energy...

287

THE NATURE OF STARBURSTS. III. THE SPATIAL DISTRIBUTION OF STAR FORMATION  

SciTech Connect

We map the spatial distribution of recent star formation over a few Multiplication-Sign 100 Myr timescales in 15 starburst dwarf galaxies using the location of young blue helium burning stars identified from optically resolved stellar populations in archival Hubble Space Telescope observations. By comparing the star formation histories from both the high surface brightness central regions and the diffuse outer regions, we measure the degree to which the star formation has been centrally concentrated during the galaxies' starbursts, using three different metrics for the spatial concentration. We find that the galaxies span a full range in spatial concentration, from highly centralized to broadly distributed star formation. Since most starbursts have historically been identified by relatively short timescale star formation tracers (e.g., H{alpha} emission), there could be a strong bias toward classifying only those galaxies with recent, centralized star formation as starbursts, while missing starbursts that are spatially distributed.

McQuinn, Kristen B. W.; Skillman, Evan D. [Minnesota Institute for Astrophysics, School of Physics and Astronomy, 116 Church Street, S.E., University of Minnesota, Minneapolis, MN 55455 (United States); Dalcanton, Julianne J.; Weisz, Daniel R.; Williams, Benjamin F. [Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195 (United States); Cannon, John M. [Department of Physics and Astronomy, Macalester College, 1600 Grand Avenue, Saint Paul, MN 55105 (United States); Dolphin, Andrew E. [Raytheon Company, 1151 E. Hermans Road, Tucson, AZ 85756 (United States); Holtzman, Jon, E-mail: kmcquinn@astro.umn.edu [Department of Astronomy, New Mexico State University, Box 30001-Department 4500, 1320 Frenger Street, Las Cruces, NM 88003 (United States)

2012-11-01T23:59:59.000Z

288

TRIGGERED STAR FORMATION SURROUNDING WOLF-RAYET STAR HD 211853  

SciTech Connect

The environment surrounding Wolf-Rayet (W-R) star HD 211853 is studied in molecular, infrared, as well as radio, and H I emission. The molecular ring consists of well-separated cores, which have a volume density of 10{sup 3} cm{sup -3} and kinematic temperature {approx}20 K. Most of the cores are under gravitational collapse due to external pressure from the surrounding ionized gas. From the spectral energy distribution modeling toward the young stellar objects, the sequential star formation is revealed on a large scale in space spreading from the W-R star to the molecular ring. A small-scale sequential star formation is revealed toward core 'A', which harbors a very young star cluster. Triggered star formations are thus suggested. The presence of the photodissociation region, the fragmentation of the molecular ring, the collapse of the cores, and the large-scale sequential star formation indicate that the 'collect and collapse' process functions in this region. The star-forming activities in core 'A' seem to be affected by the 'radiation-driven implosion' process.

Liu Tie; Wu Yuefang; Zhang Huawei [Department of Astronomy, Peking University, 100871 Beijing (China); Qin Shengli, E-mail: liutiepku@gmail.com [I. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher Str. 77, 50937 Koeln (Germany)

2012-05-20T23:59:59.000Z

289

THE THERMAL STRUCTURE OF GRAVITATIONALLY DARKENED CLASSICAL Be STAR DISKS  

Science Conference Proceedings (OSTI)

The effect of gravitational darkening on models of the thermal structure of Be star disks is systematically studied for a wide range of Be star spectral types and rotation rates. Gravitational darkening causes a reduction of the stellar effective temperature toward the equator and a redirection of energy toward the poles. It is an important physical effect in these star-disk systems because the photoionizing radiation from the central B star is the main energy source for the disk. We have added gravitational darkening to the BEDISK code to produce circumstellar disk models that include both the variation in the effective temperature with latitude and the non-spherical shape of the star in the calculation of the stellar photoionizing radiation field. The effect of gravitational darkening on global measures of disk temperature is generally significant for rotation rates above 80% of critical rotation. For example, a B0V model rotating at 95% of critical has a density-averaged disk temperature Almost-Equal-To 2500 K cooler than its non-rotating counterpart. However, detailed differences in the temperature structure of disks surrounding rotating and non-rotating stars reveal a complex pattern of heating and cooling. Spherical gravitational darkening, an approximation that ignores the changing shape of the star, gives good results for disk temperatures for rotation rates less than Almost-Equal-To 80% of critical. However for the highest rotation rates, the distortion of the stellar surface caused by rotation becomes important.

McGill, M. A.; Sigut, T. A. A.; Jones, C. E. [Department of Physics and Astronomy, University of Western Ontario, London, Ontario N6A 3K7 (Canada)

2011-12-20T23:59:59.000Z

290

Cooling of Neutron Stars with Color Superconducting Quark Cores  

E-Print Network (OSTI)

We show that within a recently developed nonlocal chiral quark model the critical density for a phase transition to color superconducting quark matter under neutron star conditions can be low enough for these phases to occur in compact star configurations with masses below 1.3 M_solar. We study the cooling of these objects in isolation for different values of the gravitational mass. Our equation of state (EoS) allows for 2SC quark matter with a large quark gap \\~100 MeV for u and d quarks of two colors that coexists with normal quark matter within a mixed phase in the hybrid star interior. We argue that, if the phases with unpaired quarks were allowed, the corresponding hybrid stars would cool too fast. If they occured for M cooling data existing by today. We discuss a "2SC+X" phase, as a possibility to have all quarks paired in two-flavor quark matter under neutron star constraints, where the X-gap is of the order of 10 keV - 1 MeV. Density independent gaps do not allow to fit the cooling data. Only the presence of an X-gap that decreases with increase of the density could allow to appropriately fit the data in a similar compact star mass interval to that following from a purely hadronic model. This scenario is suggested as an alternative explanation of the cooling data in the framework of a hybrid star model.

Hovik Grigorian; David Blaschke; Dmitri Voskresensky

2004-11-22T23:59:59.000Z

291

Analysis of Star Formation in Galaxy-like Objects  

E-Print Network (OSTI)

Using cosmological hydrodynamical simulations, we investigate the effects of hierarchical aggregation on the triggering of star formation in galactic-like objects. We include a simple star formation model to transform the cold gas in dense regions into stars. Simulations with different parameters have been performed in order to quantify the dependence of the results on the parameters. We then resort to stellar population synthesis models to trace the color evolution of each object with red-shift and in relation to their merger histories. We find that, in a hierarchical clustering scenario, the process of assembling of the structure is one natural mechanism that may trigger star formation. The resulting star formation rate history for each individual galactic object is composed of a continuous one ($\\leq 3 \\rm{M_{\\odot}/yr}$) and a series of star bursts. We find that even the accretion of a small satellite can be correlated with a stellar burst. Massive mergers are found to be more efficient at transforming gas into stars

Patricia B. Tissera

1999-12-20T23:59:59.000Z

292

Star Products for Relativistic Quantum Mechanics  

E-Print Network (OSTI)

The star product formalism has proved to be an alternative formulation for nonrelativistic quantum mechanics. We want introduce here a covariant star product in order to extend the star product formalism to relativistic quantum mechanics in the proper time formulation.

P. Henselder

2007-05-24T23:59:59.000Z

293

ENERGY STAR Score for Medical Offices  

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

July 2013 ENERGY STAR Score for Medical Offices in the United States Page 1 ENERGY STAR Score for Medical Offices in the United States Technical Reference OVERVIEW The ENERGY STAR...

294

List of ENERGY STAR Partners | ENERGY STAR  

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

Governments in a different Country and State: New Search Refine Search All Countries Argentina Australia Belgium Brazil Canada Chile China Colombia Costa Rica Czech Republic...

295

Reading Municipal Light Department - Residential ENERGY STAR...  

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

Residential ENERGY STAR Appliance Rebate Program Reading Municipal Light Department - Residential ENERGY STAR Appliance Rebate Program Eligibility Residential Savings For Heating &...

296

ENERGY STAR Score for Medical Offices  

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

Medical Offices in the United States Page 1 ENERGY STAR Score for Medical Offices in the United States Technical Reference OVERVIEW The ENERGY STAR Score for Medical Offices...

297

TARA Center Mae Daigaku Shokubutsu  

E-Print Network (OSTI)

and Cooperative Research Center (Plasma Research Center) (Helium Building) (Rectifier Building) (Generator

Tanaka, Jiro

298

ENERGY STAR Snapshot Spring 2012  

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

Spring 2012 Spring 2012 Snapshot data runs through December 31, 2011. The ENERGY STAR Snapshot provides an at-a-glance summary of the latest national ENERGY STAR metrics to help you, our partners, see the impact of your efforts. The ENERGY STAR Snapshot is distributed twice a year and provides: * Trends in energy benchmarking of commercial and industrial buildings. * State-by-state activity along with activity for the top Designated Market Areas. * Industrial sector participation in ENERGY STAR. * Trends in ENERGY STAR certified commercial and industrial facilities. Summary By the end of calendar year 2011, commercial and industrial organizations exceeded figures for benchmarking and certification that were achieved in 2010. Since June, 2011:

299

Quark Stars as inner engines for Gamma Ray Bursts?  

E-Print Network (OSTI)

A model for Gamma ray bursts inner engine based on quark stars (speculated to exist in nature) is presented. We describe how and why these objects might constitute new candidates for GRB inner engines. At the heart of the model is the onset of exotic phases of quark matter at the surface of such stars, in particular the 2-flavor color superconductivity. A novel feature of such a phase is the generation of particles which are unstable to photon decay providing a natural mechanism for a fireball generation; an approach which is fundamentally different from models where the fireball is generated during collapse or conversion of neutron star to quark star processes. The model is capable of reproducing crucial features of Gamma ray bursts, such as the episodic activity of the engine (multiple and random shell emission) and the two distinct categories of the bursts (two regimes are isolated in the model with \\sim 2 s and \\sim 81 s burst total duration).

R. Ouyed; F. Sannino

2001-03-01T23:59:59.000Z

300

Superfluid Heat Conduction and the Cooling of Magnetized Neutron Stars  

SciTech Connect

We report on a new mechanism for heat conduction in the neutron star crust. We find that collective modes of superfluid neutron matter, called superfluid phonons, can influence heat conduction in magnetized neutron stars. They can dominate the heat conduction transverse to the magnetic field when the magnetic field B > or approx. 10{sup 13} G. At a density of {rho}{approx_equal}10{sup 12}-10{sup 14} g/cm{sup 3}, the conductivity due to superfluid phonons is significantly larger than that due to lattice phonons and is comparable to electron conductivity when the temperature {approx_equal}10{sup 8} K. This new mode of heat conduction can limit the surface anisotropy in highly magnetized neutron stars. Cooling curves of magnetized neutron stars with and without superfluid heat conduction could show observationally discernible differences.

Aguilera, Deborah N. [Tandar Laboratory, Comision Nacional de Energia Atomica, Avenida Gral. Paz 1499, 1650 San Martin, Buenos Aires (Argentina); Cirigliano, Vincenzo; Reddy, Sanjay; Sharma, Rishi [Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Pons, Jose A. [Department of Applied Physics, University of Alicante, Apartado de Correos 99, E-03080 Alicante (Spain)

2009-03-06T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Superfluid heat conduction and the cooling of magnetized neutron stars  

SciTech Connect

We report on a new mechanism for heat conduction in the neutron star crust. We find that collective modes of superftuid neutron matter, called superfiuid phonons (sPhs), can influence heat conduction in magnetized neutron stars. They can dominate the heat conduction transverse to magnetic field when the magnetic field B {approx}> 10{sup 13} C. At density p {approx_equal} 10{sup 12}--10{sup 14} g/cm{sup 3} the conductivity due to sPhs is significantly larger than that due to lattice phonons and is comparable to electron conductivity at when temperature {approx_equal} 10{sup 8} K. This new mode of heat conduction can limit the surface anisotropy in highly magnetized neutron stars. Cooling curves of magnetized neutron stars with and without superfluid heat conduction show observationally discernible differences.

Cirigliano, Vincenzo [Los Alamos National Laboratory; Reddy, Sanjay [Los Alamos National Laboratory; Sharma, Rishi [Los Alamos National Laboratory; Aguilera, Deborah N [BUENOS AIRES

2008-01-01T23:59:59.000Z

302

Superfluid Heat Conduction and the Cooling of Magnetized Neutron Stars  

E-Print Network (OSTI)

We report on a new mechanism for heat conduction in the neutron star crust. We find that collective modes of superfluid neutron matter, called superfluid phonons (sPhs), can influence heat conduction in magnetized neutron stars. They can dominate the heat conduction transverse to magnetic field when the magnetic field $B \\gsim 10^{13}$ G. At density $\\rho \\simeq 10^{12}-10^{14} $ g/cm$^3$ the conductivity due to sPhs is significantly larger than that due to lattice phonons and is comparable to electron conductivity when temperature $\\simeq 10^8$ K. This new mode of heat conduction can limit the surface anisotropy in highly magnetized neutron stars. Cooling curves of magnetized neutron stars with and without superfluid heat conduction could show observationally discernible differences.

Aguilera, Deborah N; Pons, José A; Reddy, Sanjay; Sharma, Rishi

2008-01-01T23:59:59.000Z

303

Superfluid Heat Conduction and the Cooling of Magnetized Neutron Stars  

E-Print Network (OSTI)

We report on a new mechanism for heat conduction in the neutron star crust. We find that collective modes of superfluid neutron matter, called superfluid phonons (sPhs), can influence heat conduction in magnetized neutron stars. They can dominate the heat conduction transverse to magnetic field when the magnetic field $B \\gsim 10^{13}$ G. At density $\\rho \\simeq 10^{12}-10^{14} $ g/cm$^3$ the conductivity due to sPhs is significantly larger than that due to lattice phonons and is comparable to electron conductivity when temperature $\\simeq 10^8$ K. This new mode of heat conduction can limit the surface anisotropy in highly magnetized neutron stars. Cooling curves of magnetized neutron stars with and without superfluid heat conduction could show observationally discernible differences.

Deborah N. Aguilera; Vincenzo Cirigliano; José A. Pons; Sanjay Reddy; Rishi Sharma

2008-07-29T23:59:59.000Z

304

Effects of dark matter annihilation on the first stars  

E-Print Network (OSTI)

We study the evolution of the first stars in the universe (Population III) from the early pre-Main Sequence until the end of helium burning in the presence of WIMP dark matter annihilation inside the stellar structure. The two different mechanisms that can provide this energy source are the contemporary contraction of baryons and dark matter, and the capture of WIMPs by scattering off the gas with subsequent accumulation inside the star. We find that the first mechanism can generate an equilibrium phase, previously known as a "dark star", which is transient and present in the very early stages of pre-MS evolution. The mechanism of scattering and capture acts later, and can support the star virtually forever, depending on environmental characteristic of the dark matter halo and on the specific WIMP model.

F. Iocco; A. Bressan; E. Ripamonti; R. Schneider; A. Ferrara; P. Marigo

2008-09-14T23:59:59.000Z

305

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Center to someone by E-mail Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Local Laws and Incentives There are a variety of local laws and incentives that support reducing U.S. petroleum consumption by encouraging or requiring individuals and/or public and private organizations to use alternative fuels, advanced vehicles, and strategies to decrease fuel use or increase fuel economy. Local city and county governments create such laws and incentives to ensure people use

306

Well-centered meshing.  

E-Print Network (OSTI)

??A well-centered simplex is a simplex whose circumcenter lies in its interior, and a well-centered mesh is a simplicial mesh in which every simplex is… (more)

Vanderzee, Evan B.

2010-01-01T23:59:59.000Z

307

WIPP - Joint Information Center  

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

The Joint Information Center is located at 4021 National Parks Highway in Carlsbad, N.M. Joint Information Center In the unlikely event of an emergency, the WIPP Joint Information...

308

OBSERVATORY STUDENT CENTER  

E-Print Network (OSTI)

RECEIVING CENTRAL GROUNDS FIELD HOUSE MORRIS GLENN PLANT #2 CHILL CENTER HEALTH HARTSHORN LORY B-WING GUGGEN- HEIM Theatre LSC GREENHOUSES QUONSETS N S HOLLEY PLANT ENVIRONMENTAL RESEARCH CENTER LAKE SUBSTATION

309

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Center to someone by E-mail Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Recent Federal Actions This list includes recent federal actions, such as Federal Register notices and rulemaking actions, agency directives or agency communications, that are all publicly available. These actions relate to alternative fuels and vehicles, fuel blends, hybrid vehicles, and idle reduction and fuel economy measures. When rulemakings are finalized, they will move to the list of

310

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Center to someone by E-mail Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Federal State Advanced Search All Laws & Incentives Sorted by Type Expired, Repealed, and Archived Federal Incentives and Laws The following is a list of expired, repealed, and archived incentives, laws, regulations, funding opportunities, or other initiatives related to alternative fuels and vehicles, advanced technologies, or air quality. Value-Added Producer Grants (VAPG) Archived: 12/31/2012

311

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Tools Tools Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... Truckstop Electrification Truck Stop Electrification Locator Locate truck stops with electrification sites. Click on a location on the map for site details. A U.S. Department of Energy Energy Efficiency and Renewable Energy Source: Alternative Fuels Data Center dditional Resources View list of electrification sites in the U.S. by state. Learn more about idle reduction techniques.

312

Atomic Spectroscopy Data Center  

Science Conference Proceedings (OSTI)

Atomic Spectroscopy Data Center. Summary: ... Atomic Spectroscopy Data Webpage. End Date: ongoing. Lead Organizational Unit: physlab. Contact. ...

2013-06-06T23:59:59.000Z

313

Center Office Staff  

Science Conference Proceedings (OSTI)

Center Office Staff. Senior Management. ... Donna Lauren, Senior Management Advisor Donna Lauren is the Senior Management Advisor for CNST. ...

2013-06-07T23:59:59.000Z

314

Live Working Resource Center  

Science Conference Proceedings (OSTI)

This report is a summary of work performed in 2008 on the EPRI Live Working Resource Center (LWRC) web site.

2008-12-16T23:59:59.000Z

315

Data center reference lists  

Science Conference Proceedings (OSTI)

Data Center Publications. Use the following form to retrieve a list of references to critical compilations, databases, reviews ...

316

Johns Manville Technical Center  

Science Conference Proceedings (OSTI)

Johns Manville Technical Center. NVLAP Lab Code: 100425-0. Address and Contact Information: 10100 West Ute Avenue ...

2013-09-20T23:59:59.000Z

317

CONSTRAINING TIDAL DISSIPATION IN STARS FROM THE DESTRUCTION RATES OF EXOPLANETS  

Science Conference Proceedings (OSTI)

We use the distribution of extrasolar planets in circular orbits around stars with surface convective zones detected by ground-based transit searches to constrain how efficiently tides raised by the planet are dissipated on the parent star. We parameterize this efficiency as a tidal quality factor (Q{sub *}). We conclude that the population of currently known planets is inconsistent with Q{sub *} < 10{sup 7} at the 99% level. Previous studies show that values of Q{sub *} between 10{sup 5} and 10{sup 7} are required in order to explain the orbital circularization of main-sequence low-mass binary stars in clusters, suggesting that different dissipation mechanisms might be acting in the two cases, most likely due to the very different tidal forcing frequencies relative to the stellar rotation frequency occurring for star-star versus planet-star systems.

Penev, Kaloyan [Department of Astrophysical Sciences, 4 Ivy Lane, Peyton Hall, Princeton University, Princeton, NJ 08544 (United States); Jackson, Brian [Carnegie DTM, 5241 Broad Branch Road, NW, Washington, DC 20015-1305 (United States); Spada, Federico [Department of Astronomy, Yale University, P.O. Box 208101, New Haven, CT 06520-8101 (United States); Thom, Nicole [NASA Goddard Space Flight Center, Greenbelt, MD (United States)

2012-06-01T23:59:59.000Z

318

ON THE MASS DISTRIBUTION AND BIRTH MASSES OF NEUTRON STARS  

Science Conference Proceedings (OSTI)

We investigate the distribution of neutron star masses in different populations of binaries, employing Bayesian statistical techniques. In particular, we explore the differences in neutron star masses between sources that have experienced distinct evolutionary paths and accretion episodes. We find that the distribution of neutron star masses in non-recycled eclipsing high-mass binaries as well as of slow pulsars, which are all believed to be near their birth masses, has a mean of 1.28 M{sub Sun} and a dispersion of 0.24 M{sub Sun }. These values are consistent with expectations for neutron star formation in core-collapse supernovae. On the other hand, double neutron stars, which are also believed to be near their birth masses, have a much narrower mass distribution, peaking at 1.33 M{sub Sun }, but with a dispersion of only 0.05 M{sub Sun }. Such a small dispersion cannot easily be understood and perhaps points to a particular and rare formation channel. The mass distribution of neutron stars that have been recycled has a mean of 1.48 M{sub Sun} and a dispersion of 0.2 M{sub Sun }, consistent with the expectation that they have experienced extended mass accretion episodes. The fact that only a very small fraction of recycled neutron stars in the inferred distribution have masses that exceed {approx}2 M{sub Sun} suggests that only a few of these neutron stars cross the mass threshold to form low-mass black holes.

Oezel, Feryal; Psaltis, Dimitrios; Santos Villarreal, Antonio [Department of Astronomy, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Narayan, Ramesh [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138,USA (United States)

2012-09-20T23:59:59.000Z

319

ENERGY STAR certification for your building | ENERGY STAR Buildings &  

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

certification for your building certification for your building Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Learn the benefits Get started Use Portfolio Manager Save energy Find financing Earn recognition 20-percent recognition ENERGY STAR certification How to apply for ENERGY STAR certification Tips for low-cost verifications Submit a profile of your building

320

ENERGY STAR Building Upgrade Manual | ENERGY STAR Buildings & Plants  

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

ENERGY STAR Building Upgrade Manual ENERGY STAR Building Upgrade Manual Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Learn the benefits Get started Use Portfolio Manager Save energy Stamp out energy waste Find cost-effective investments Engage occupants Purchase energy-saving products Put computers to sleep Get help from an expert Take a comprehensive approach

Note: This page contains sample records for the topic "difference star center" 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

Portfolio Manager Technical Reference: ENERGY STAR Score | ENERGY STAR  

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

ENERGY STAR Score ENERGY STAR Score Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources Success stories Target Finder Technical documentation

322

Sample ENERGY STAR performance documents | ENERGY STAR Buildings & Plants  

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

Existing buildings Existing buildings » Use Portfolio Manager » Verify and document your savings » Sample ENERGY STAR performance documents Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Learn the benefits Get started Use Portfolio Manager The new ENERGY STAR Portfolio Manager How Portfolio Manager helps you save The benchmarking starter kit

323

ENERGY STAR Focus on Energy Efficiency in Metalcasting | ENERGY STAR  

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

Metalcasting Metalcasting Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section Get started with ENERGY STAR Make the business case Build an energy management program Measure, track, and benchmark Tools for benchmarking energy management practices Tools for tracking and benchmarking facility energy performance ENERGY STAR Energy Performance Indicators for plants

324

Energy Technology Engineering Center  

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

Technology Engineering Center Technology Engineering Center 41 00 Guardian Street, Suite # 160 Simi Valley, CA 93063 Memorandum for: Gregory H. Woods General Council January 30, 2013 FROM: John Jones EL\= Federal Proje� irector Energy Technology Engineering Center (ETEC) Project Office SUBJECT: Annual National Environmental Policy Act {NEPA) Planning Summary Attached is the 2013 Annual NEPA Planning Summary for the ETEC Project Office.

325

Medicine and Medical Center  

E-Print Network (OSTI)

Faculty of Medicine and Medical Center (FM/AUBMC) #12;370 Faculty of Medicine and Medical Center (FM/AUBMC) Graduate Catalogue 2013­14 Faculty of Medicine and Medical Center (FM/AUBMC) Officers Vice President for Medical Affairs and the Raja N. Khuri Dean of the Faculty of Medicine Ziyad Ghazzal

326

Louisiana Transportation Research Center  

E-Print Network (OSTI)

Louisiana Transportation Research Center LTRC www.ltrc.lsu.edu 2012-13 ANNUALREPORT #12;The Louisiana Transportation Research Center (LTRC) is a research, technology transfer, and training center administered jointly by the Louisiana Department of Transportation and Development (DOTD) and Louisiana State

Harms, Kyle E.

327

Data center evolution  

Science Conference Proceedings (OSTI)

Data centers form a key part of the infrastructure upon which a variety of information technology services are built. As data centers continue to grow in size and complexity, it is desirable to understand aspects of their design that are worthy of carrying ... Keywords: Data center, Ethernet, InfiniBand, Power management, Solid state storage, Virtualization

Krishna Kant

2009-12-01T23:59:59.000Z

328

Lujan Center User Guide  

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

1 1 The Surface Profile Analysis Reflectometer (SPEAR), located on Flight Path 9 in the Lujan Center, is ideally suited to study thin (from 5 - 3000 Å) organic and inorganic layers in a variety of different environments. The instrument uses an unpolarized neutron beam to study a broad range of materials including polymers, nano-engineered films, and biological systems. SPEAR is a time-of-flight (TOF) reflectometer using 2 choppers to define a typical wavelength range of 4.5 Å - 16 Å. With this polychromatic beam, a range of momentum transfer vectors (Q z ) can be measured without altering the angle of the incident beam. An important feature of SPEAR's design is that the beam is inclined to the horizon at 1.0°±0.0.25 This inclination allows for reflectivity

329

Fourier decomposition and frequency analysis of the pulsating stars with PRRc and RRab variables. Separation criteria and particularities  

E-Print Network (OSTI)

The OGLE database is revisited to investigate in more detail the properties of the Fourier parameters. Methodological improvements led us to identify a clear separation among High-Amplitude Delta Scuti (HADS), RRc and RRab stars. The bimodal distribution of the R21 parameter in HADS stars is explained as a contamination effect from RRc stars: there is evidence that all stars with 0.200.55 d; evolutionary phases or the combination of different physical conditions (not only metallicity) are suggested to explain this separation, observed also in the cluster RRab stars. The stellar parameters of RRc stars in a given globular cluster show different tendencies than those of RRc stars from different clusters.

Poretti, E

2001-01-01T23:59:59.000Z

330

The Brightest Stars in M32: Comparing Predictions from Spectra with the Resolved Stellar Content  

E-Print Network (OSTI)

Broad- and narrow-band images covering the 1 - 4um wavelength interval are used to investigate the properties of the brightest AGB stars in the Local Group galaxy M32. The brightest AGB stars near the center of M32 have peak M_L' brightnesses and K-L' colors that are similar to those of luminous AGB stars in the Galactic disk, while the density of bright AGB stars per unit visible and near-infrared surface brightness is found to be constant out to projected major axis distances of 1 kpc. The J-K color distribution of bright AGB stars throughout much of the galaxy is consistent with that of a single population of AGB stars, the majority of which are long period variables, having a common metallicity and age. Thus, these data do not support spectroscopic studies that find an age gradient in M32. The well-mixed AGB content of M32 is consistent with tidal stirring. The stellar content of M32 is compared with that of the M31 bulge. While the peak K-band brightnesses of AGB stars in the two systems agree to within a few tenths of a magnitude, M32 contains more bright AGB stars per unit integrated brightness than the outer bulge of M31.

T. J. Davidge; J. B. Jensen

2006-10-20T23:59:59.000Z

331

Dynamical processes in galaxy centers  

E-Print Network (OSTI)

How does the gas get in nuclear regions to fuel black holes? How efficient is the feedback? The different processes to cause rapid gas inflow (or outflow) in galaxy centers are reviewed. Non axisymmetries can be created or maintained by internal disk instabilities, or galaxy interactions. Simulations and observations tell us that the fueling is a chaotic and intermittent process, with different scenarios and time-scales, according to the various radial scales across a galaxy.

Combes, Francoise

2011-01-01T23:59:59.000Z

332

Rapid cooling of neutron star in Cassiopeia A and $r$-mode damping in the core  

E-Print Network (OSTI)

An alternative explanation to the rapid cooling of neutron star in Cas A is proposed, which suggests that the star is experiencing the recovery period following the \\textit{r}-mode heating process, assuming the star is differentially rotating. Like the neutron-superfluidity-triggering model, we predicted the rapid cooling will continue for several decades. But the behavior of the two models has slight differences, and they may be distinguished by observations in the near future.

Yang, Shu-Hua; Zheng, Xiao-Ping

2011-01-01T23:59:59.000Z

333

nano-science center kbenhavns universitet  

E-Print Network (OSTI)

nano-science center københavns universitet PhD SLAM COMPETITION Can you present your work in three minutes for fellow PhD stu- dents and colleges at Nano-Science Center. Judges from different fields@fys.ku.dk Read more about PhD slam here: nano.ku.dk/Events All are welcome Arranged by: Nano-Science Center

Mosegaard, Klaus

334

Who else is partnered with ENERGY STAR? | ENERGY STAR Buildings...  

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

Hospital logo Increased its average ENERGY STAR score by 12 points over 2010 TIAA-CREF logo Achieved its 2012 goal of a 15% portfolio-wide energy reduction Transwestern...

335

The ENERGY STAR Guidelines for Energy Management | ENERGY STAR  

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

a star. Your guide to building a strategic energy management program So you want to start saving energy, but you don't know where to begin. Or perhaps you've been managing energy...

336

ENERGY STAR Update: ENERGY STAR Low Carbon IT Campaign Kicks...  

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

Carbon IT Campaign Kicks Off 2013 with Organizations Pledging to Power Manage 360,000 Computers The ENERGY STAR Low Carbon IT (LCIT) Campaign, a nationwide effort to assist and...

337

ENERGY STAR Challenge for Industry  

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

Industrial Plant Industrial Plant Certification Professional Engineers' Guide for Validating Statements of Energy Performance Office of Air and Radiation Climate Protection Partnerships Division June 2013 ii Introduction The U.S. Environmental Protection Agency's ENERGY STAR program provides guidance, tools, and recognition to help companies improve the energy performance of their facilities and strengthen the effectiveness of their energy management program. Through ENERGY STAR, the U.S. Environmental Protection Agency (EPA) offers a number of forms of recognition, including certification for facility energy efficiency. ENERGY STAR certification for industrial plants recognizes individual manufacturing plants whose

338

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Biodiesel » Laws & Incentives Biodiesel » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Biodiesel Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for Biodiesel The list below contains summaries of all Federal laws and incentives related to Biodiesel. Incentives Alternative Fuel Infrastructure Tax Credit Fueling equipment for natural gas, liquefied petroleum gas (propane),

339

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Tools Tools Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... Fuel Properties Search Fuel Properties Comparison Create a custom chart comparing fuel properties and characteristics for multiple fuels. Select the fuel and properties of interest. Select Fuels Clear all All Fuels Gasoline Diesel (No. 2) Biodiesel Compressed Natural Gas (CNG) Electricity Ethanol Hydrogen Liquefied Natural Gas (LNG) Propane (LPG)

340

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Electricity » Laws & Incentives Electricity » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Electricity Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for EVs The list below contains summaries of all Federal laws and incentives related to EVs. Incentives Alternative Fuel Infrastructure Tax Credit Fueling equipment for natural gas, liquefied petroleum gas (propane),

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341

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Propane » Laws & Incentives Propane » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Propane Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for Propane (LPG) The list below contains summaries of all Federal laws and incentives related to Propane (LPG). Incentives Alternative Fuel Infrastructure Tax Credit Fueling equipment for natural gas, liquefied petroleum gas (propane),

342

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Ethanol » Laws & Incentives Ethanol » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Ethanol Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for Ethanol The list below contains summaries of all Federal laws and incentives related to Ethanol. Incentives Alternative Fuel Infrastructure Tax Credit Fueling equipment for natural gas, liquefied petroleum gas (propane),

343

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Hydrogen » Laws & Incentives Hydrogen » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Hydrogen Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for Hydrogen Fuel Cells The list below contains summaries of all Federal laws and incentives related to Hydrogen Fuel Cells. Incentives Alternative Fuel Tax Exemption Alternative fuels used in a manner that the Internal Revenue Service (IRS)

344

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Tools Tools Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... Data Included in the Alternative Fuel Stations Download The following data fields are provided in the downloadable files for alternative fuel stations. Field Value Description fuel_type_code Type: string The type of alternative fuel the station provides. Fuel types are given as code values as described below: Value Description BD Biodiesel (B20 and above)

345

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Conserve Fuel » Laws & Incentives Conserve Fuel » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Biodiesel Electricity Ethanol Hydrogen Natural Gas Propane Emerging Fuels Fuel Prices Federal Laws and Incentives for Idle Reduction The list below contains summaries of all Federal laws and incentives related to Idle Reduction. Incentives Idle Reduction Technology Excise Tax Exemption Qualified on-board idle reduction devices and advanced insulation are

346

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Natural Gas » Laws & Incentives Natural Gas » Laws & Incentives Printable Version Share this resource Send a link to Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center on AddThis.com... More in this section... Natural Gas Basics Benefits & Considerations Stations Vehicles Laws & Incentives Federal Laws and Incentives for Natural Gas The list below contains summaries of all Federal laws and incentives related to Natural Gas. Incentives Alternative Fuel Infrastructure Tax Credit Fueling equipment for natural gas, liquefied petroleum gas (propane),

347

FIRST CHEMICAL ANALYSIS OF STARS IN THE TRIANGULUM--ANDROMEDA STAR CLOUD  

Science Conference Proceedings (OSTI)

We undertake the first high-resolution spectroscopic study of the Triangulum-Andromeda (TriAnd) star cloud-an extended, mid-latitude Milky Way (MW) halo substructure about 20 kpc away in the second Galactic quadrant- through six M giant star candidates selected to be both spatially and dynamically associated with this system. The abundance patterns of [Ti/Fe], [Y/Fe], and [La/Fe] as a function of [Fe/H] for these stars support TriAnd as having an origin in a dwarf galaxy with a chemical enrichment history somewhat similar to that of the Sagittarius dwarf spheroidal galaxy. We also investigate the previously proposed hypothesis that TriAnd is an outlying, dynamically older piece of the Monoceros Stream (also known as the Galactic Anticenter Stellar Structure, 'GASS') under the assumption that both features come from the tidal disruption of the same accreted MW satellite and find that net differences in the above abundance patterns between the TriAnd and GASS stars studied suggest that these two systems are independent and unrelated.

Chou, Mei-Yin; Majewski, Steven R.; Patterson, Richard J. [Department of Astronomy, University of Virginia, Charlottesville, VA 22904-4325 (United States); Cunha, Katia; Smith, Verne V. [National Optical Astronomy Observatories, P.O. Box 26732, Tucson, AZ 85726 (United States); Martinez-Delgado, David, E-mail: mc6ss@virginia.edu, E-mail: srm4n@virginia.edu, E-mail: rjp0i@virginia.edu, E-mail: cmy@asiaa.sinica.edu.tw, E-mail: cunha@noao.edu, E-mail: vsmith@noao.edu, E-mail: delgado@mpia-hd.mpg.de, E-mail: ddelgado@iac.es [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, Heidelberg (Germany)

2011-04-20T23:59:59.000Z

348

An HI Threshold for Star Cluster Formation in Tidal Debris  

E-Print Network (OSTI)

Super star clusters are young, compact star clusters found in the central regions of interacting galaxies. Recently, they have also been reported to preferentially form in certain tidal tails, but not in others. In this paper, we have used 21 cm HI maps and the Hubble Space Telescope Wide Field Planetary Camera 2 images of eight tidal tail regions of four merging galaxy pairs to compare the kiloparsec scale HI distribution with the location of super star clusters found from the optical images. For most of the tails, we find that there is an increase in super star cluster density with increasing projected HI column density, such that the star cluster density is highest when log N(HI) >= 20.6 cm^{-2}, but equal to the background count rate at lower HI column density. However, for two tails (NGC 4038/39 Pos A and NGC 3921), there is no significant star cluster population despite the presence of gas at high column density. This implies that the N(HI) threshold is a necessary but not sufficient condition for cluster formation. Gas volume density is likely to provide a more direct criterion for cluster formation, and other factors such as gas pressure or strength of encounter may also have an influence. Comparison of HI thresholds needed for formation of different types of stellar structures await higher resolution HI and optical observations of larger numbers of interacting galaxies.

A. Maybhate; J. Masiero; J. E. Hibbard; J. C. Charlton; C. Palma; K. A. Knierman; J. English

2007-07-24T23:59:59.000Z

349

Photoionising feedback in star cluster formation  

E-Print Network (OSTI)

We present the first ever hydrodynamic calculations of star cluster formation that incorporate the effect of feedback from ionising radiation. In our simulations, the ionising source forms in the cluster core at the intersection of several dense filaments of inflowing gas. We show that these filaments collimate ionised outflows and suggest such an environmental origin for at least some observed outflows in regions of massive star formation. Our simulations show both positive feedback (i.e. promotion of star formation in neutral gas compressed by expanding HII regions) and negative feedback (i.e. suppression of the accretion flow in to the central regions). We show that the volume filling factor of ionised gas is very different in our simulations than would result from the case where the central source interacted with an azimuthally smoothed gas density distribution. As expected, gas density is the key parameter in determining whether clusters are unbound by photoionising radiation. Nevertheless, we find - on account of the acceleration of a small fraction of the gas to high velocities in the outflows - that the deposition in the gas of an energy that exceeds the binding energy of the cluster is not a sufficient criterion for unbinding the bulk of the cluster mass.

J. E. Dale; I. A. Bonnell; C. J. Clarke; M. R. Bate

2005-01-10T23:59:59.000Z

350

Nuclear Reaction Rates and Carbon Star Formation  

E-Print Network (OSTI)

We have studied how the third dredge-up and the carbon star formation in low-mass Asymptotic Giant Branch stars depends on certain key nuclear reaction rates. We find from a set of complete stellar evolution calculations of a 2Msun model with Z=0.01 including mass loss, that varying either the N14(p,g)O15 or the 3-alpha reaction rate within their uncertainties as given in the NACRE compilation results in dredge-up and yields that differ by a factor of 2. Model tracks with a higher rate for the 3-alpha rate and a lower rate for the N14(p,g)O15 reaction both show more efficient third dredge-up. New experimental results for the N14(p,g)O15 reaction rates are surveyed, yielding a rate which is about 40% lower than the tabulated NACRE rate, and smaller than NACRE's lower limit. We discuss the possible implications of the revised nuclear reaction stellar evolution calculations that aim to reproduce the observed carbon star formation at low mass, which requires efficient third dredge-up.

Falk Herwig; Sam M. Austin

2004-08-21T23:59:59.000Z

351

Interplay between diffusion, accretion and nuclear reactions in the atmospheres of Sirius and Przybylski's star  

E-Print Network (OSTI)

The abundance anomalies in chemically peculiar B-F stars are usually explained by diffusion of chemical elements in the stable atmospheres of these stars. But it is well known that Cp stars with similar temperatures and gravities show very different chemical compositions. We show that the abundance patterns of several stars can be influenced by accretion and (or) nuclear reactions in stellar atmospheres. We report the result of determination of abundances of elements in the atmosphere of hot Am star: Sirius A and show that Sirius A was contaminated by s-process enriched matter from Sirius B (now a white dwarf). The second case is Przybylski's star. The abundance pattern of this star is the second most studied one after the Sun with the abundances determined for about 60 chemical elements. Spectral lines of radioactive elements with short decay times were found in the spectrum of this star. We report the results of investigation on the stratification of chemical elements in the atmosphere of Przybylski's star and the new identification of lines corresponding to short lived actinides in its spectrum. Possible explanations of the abundances pattern of Przybylski's star (as well as HR465 and HD965) can be the natural radioactive decay of thorium, and uranium, the explosion of a companion as a Supernova or nucleosynthesis events at stellar surface.

Alexander Yushchenko; Vera Gopka; Stephane Goriely; Angelina Shavrina; Young Woon Kang; Sergey Rostopchin; Gennady Valyavin; David Mkrtichian; Artie Hatzes; Byeong-Cheol Lee; Chulhee Kim

2006-10-20T23:59:59.000Z

352

ENERGY STAR Newsletter: Fall 2009  

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

in LOCATION> for a 40-minute brown bag session to find out how we can save energy, save money, and fight climate change when we "bring our green to work." ENERGY STAR, the U.S....

353

ENERGY STAR Challenge for Industry  

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

Challenge Challenge for Industry Professional Engineers' Guide for Validating Statements of Energy Improvement Office of Air and Radiation Climate Protection Partnerships Division May 2013 Revised ii Introduction The U.S. Environmental Protection Agency's (U.S. EPA) ENERGY STAR program provides guidance, tools, and recognition to help companies improve their energy performance. ENERGY STAR is a voluntary partnership program that companies choose to join. Through ENERGY STAR, U.S. EPA offers a number of forms of recognition for achievements in energy efficiency. The ENERGY STAR Challenge for Industry recognizes individual industrial sites for achieving a 10 percent reduction in energy intensity within 5 years from the conclusion of an established baseline. To be

354

Appendix 5 - STARS Architectual Overview  

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

Last saved by Coombs Page 1 7/27/2012 Last saved by Coombs Page 1 7/27/2012 Draft Appendix 5 - STARS Architectural Overview ARC101 - Architectural Overview for Department of Energy iManage Program - STARS Project Deliverable ID: IT0013 Version number: 1.09 Draft/Final as of: 18 Oct 2005 Printed on: 27 Jul 2012 Author: Richard Popovich, STARS System Architect Richard.Popovich@hq.doe.gov (301) 903-2223 Owner: Laura Kramer, STARS Project Manager Status of Document Draft Delivered Accepted Last saved by Coombs Page 2 7/27/2012 Draft Document information Document source This document is maintained as an online document. Contact the author for the latest version. Revision history Version number Date Summary of changes Revised By 1.01 08 Jul 03 Version 1 Richard Popovich,

355

Make a commitment | ENERGY STAR  

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

my money go? Set and Save with ENERGY STAR Product Finder Rebate Finder Store Locator Energy Savings At Home Energy Savings At Home Improving your home's energy efficiency with...

356

Shooting Star | Open Energy Information  

Open Energy Info (EERE)

Shooting Star Shooting Star Jump to: navigation, search Name Shooting Star Facility Shooting Star Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner Exelon Wind Developer Infinity Wind Power Energy Purchaser Sunflower Electric Power Corporation Location Greensburg KS Coordinates 37.55019151°, -99.27585125° 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":37.55019151,"lon":-99.27585125,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

357

Abramovo Counterterrorism Training Center  

Science Conference Proceedings (OSTI)

The U.S. government has been assisting the Russian Federation (RF) Ministry of Defense (MOD) for many years with nuclear weapons transportation security (NWTS) through the provision of specialized guard escort railcars and cargo railcars with integrated physical security and communication systems, armored transport vehicles, and armored escort vehicles. As a natural continuation of the NWTS program, a partnership has been formed to construct a training center that will provide counterterrorism training to personnel in all branches of the RF MOD. The Abramovo Counterterrorism Training Center (ACTC) is a multinational, multiagency project with funding from Canada, RF and the U.S. Departments of Defense and Energy. ACTC will be a facility where MOD personnel can conduct basic through advanced training in various security measures to protect Category IA material against the threat of terrorist attack. The training will enhance defense-in-depth principles by integrating MOD guard force personnel into the overall physical protection systems and improving their overall response time and neutralization capabilities. The ACTC project includes infrastructure improvements, renovation of existing buildings, construction of new buildings, construction of new training facilities, and provision of training and other equipment. Classroom training will be conducted in a renovated training building. Basic and intermediate training will be conducted on three different security training areas where various obstacles and static training devices will be constructed. The central element of ACTC, where advanced training will be held, is the 'autodrome,' a 3 km road along which various terrorist events can be staged to challenge MOD personnel in realistic and dynamic nuclear weapons transportation scenarios. This paper will address the ACTC project elements and the vision for training development and integrating this training into actual nuclear weapons transportation operations.

Hayes, Christopher M [ORNL; Ross, Larry [U.S. Department of Energy; Lingenfelter, Forrest E [ORNL; Sokolnikov, Pavel I [ORNL; Kaldenbach, Karen Yvonne [ORNL; Estigneev, Yuri [Eleron; Murievav, Andrey [Eleron

2011-01-01T23:59:59.000Z

358

Abundance Analysis of Planetary Host Stars I. Differential Iron Abundances  

E-Print Network (OSTI)

We present atmospheric parameters and iron abundances derived from high-resolution spectra for three samples of dwarf stars: stars which are known to host close-in giant planets (CGP), stars for which radial velocity data exclude the presence of a close-in giant planetary companion (no-CGP), as well as a random sample of dwarfs with a spectral type and magnitude distribution similar to that of the planetary host stars (control). All stars have been observed with the same instrument and have been analyzed using the same model atmospheres, atomic data and equivalent width modeling program. Abundances have been derived differentially to the Sun, using a solar spectrum obtained with Callisto as the reflector with the same instrumentation. We find that the iron abundances of CGP dwarfs are on average by 0.22 dex greater than that of no-CGP dwarfs. The iron abundance distributions of both the CGP and no-CGP dwarfs are different than that of the control dwarfs, while the combined iron abundances have a distribution which is very similar to that of the control dwarfs. All four samples (CGP, no-CGP, combined, control) have different effective temperature distributions. We show that metal enrichment occurs only for CGP dwarfs with temperatures just below solar and approximately 300 K higher than solar, whereas the abundance difference is insignificant at Teff around 6000 K.

U. Heiter; R. E. Luck

2003-07-16T23:59:59.000Z

359

STAR FORMATION IN DENSE CLUSTERS  

SciTech Connect

A model of core-clump accretion with equally likely stopping describes star formation in the dense parts of clusters, where models of isolated collapsing cores may not apply. Each core accretes at a constant rate onto its protostar, while the surrounding clump gas accretes as a power of protostar mass. Short accretion flows resemble Shu accretion and make low-mass stars. Long flows resemble reduced Bondi accretion and make massive stars. Accretion stops due to environmental processes of dynamical ejection, gravitational competition, and gas dispersal by stellar feedback, independent of initial core structure. The model matches the field star initial mass function (IMF) from 0.01 to more than 10 solar masses. The core accretion rate and the mean accretion duration set the peak of the IMF, independent of the local Jeans mass. Massive protostars require the longest accretion durations, up to 0.5 Myr. The maximum protostar luminosity in a cluster indicates the mass and age of its oldest protostar. The distribution of protostar luminosities matches those in active star-forming regions if protostars have a constant birthrate but not if their births are coeval. For constant birthrate, the ratio of young stellar objects to protostars indicates the star-forming age of a cluster, typically {approx}1 Myr. The protostar accretion luminosity is typically less than its steady spherical value by a factor of {approx}2, consistent with models of episodic disk accretion.

Myers, Philip C., E-mail: pmyers@cfa.harvard.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2011-12-10T23:59:59.000Z

360

DOE Withdraws the Energy Star Label from 34 Compact Fluorescent Light Bulbs  

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

the Energy Star Label from 34 Compact Fluorescent the Energy Star Label from 34 Compact Fluorescent Light Bulbs DOE Withdraws the Energy Star Label from 34 Compact Fluorescent Light Bulbs January 26, 2010 - 11:41am Addthis Washington, DC - On January 25th, the General Counsel notified 25 manufacturers that the Department of Energy has withdrawn their right to use the Energy Star label on 34 different models of compact fluorescent light bulbs (CFLs). The Department took this action after its off-the-shelf testing revealed that the affected models do not last as long in regular use as Energy Star certification would require. As a result, these manufacturers have been informed that they can no longer ship or sell any of the 34 models of CFLs bearing the Energy Star label on the bulb or its packaging. All compact fluorescent light bulbs use about 75 percent less energy and

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361

Protoneutron star evolution and the neutrino-driven wind in general relativistic neutrino radiation hydrodynamics simulations  

SciTech Connect

Massive stars end their lives in explosions with kinetic energies on the order of 10{sup 51} erg. Immediately after the explosion has been launched, a region of low density and high entropy forms behind the ejecta, which is continuously subject to neutrino heating. The neutrinos emitted from the remnant at the center, the protoneutron star (PNS), heat the material above the PNS surface. This heat is partly converted into kinetic energy, and the material accelerates to an outflow that is known as the neutrino-driven wind. For the first time we simulate the collapse, bounce, explosion, and the neutrino-driven wind phases consistently over more than 20 s. Our numerical model is based on spherically symmetric general relativistic radiation hydrodynamics using spectral three-flavor Boltzmann neutrino transport. In simulations where no explosions are obtained naturally, we model neutrino-driven explosions for low- and intermediate-mass Fe-core progenitor stars by enhancing the charged current reaction rates. In the case of a special progenitor star, the 8.8 M{circle_dot} O-Ne-Mg-core, the explosion in spherical symmetry was obtained without enhanced opacities. The post-explosion evolution is in qualitative agreement with static steady-state and parametrized dynamic models of the neutrino-driven wind. On the other hand, we generally find lower neutrino luminosities and mean neutrino energies, as well as a different evolutionary behavior of the neutrino luminosities and mean neutrino energies. The neutrino-driven wind is proton-rich for more than 10 s and the contraction of the PNS differs from the assumptions made for the conditions at the inner boundary in previous neutrino-driven wind studies. Despite the moderately high entropies of about 100 k{sub B}/baryon and the fast expansion timescales, the conditions found in our models are unlikely to favor r-process nucleosynthesis. The simulations are carried out until the neutrino-driven wind settles down to a quasi-stationary state. About 5 s after the bounce, the peak temperature inside the PNS already starts to decrease because of the continued deleptonization. This moment determines the beginning of a cooling phase dominated by the emission of neutrinos. We discuss the physical conditions of the quasi-static PNS evolution and take the effects of deleptonization and mass accretion from early fallback into account.

Fischer, T. [University of Basel; Mezzacappa, Anthony [ORNL; Thielemann, F.-K. [University of Basel; Liebendoerfer, M. [University of Basel; Whitehouse, S. [University of Basel

2010-01-01T23:59:59.000Z

362

DOE Information Center  

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

DOE Information Center DOE Information Center The U.S. Department of Energy (DOE) Information Center provides citizens a consolidated facility to obtain information and records related to the DOE's various programs in Oak Ridge and abroad. Employees at the DOE Information Center are available to assist with your requests and searches from 8:00 a.m. to 5:00 p.m. (EST), Monday through Friday, except for federal holidays. Requests Documents can be requested in person or by telephone, email, or fax. Reproduction Please allow DOE Information Center staff adequate time to reproduce documents. Some material requires special handling, security reviews, etc. Delivery Unless special arrangements have been made with DOE Information Center staff, documents should be picked up during normal business hours.

363

Energy Efficient Data Centers  

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

Energy Efficient Data Centers Energy Efficient Data Centers Title Energy Efficient Data Centers Publication Type Report LBNL Report Number LBNL-54163 Year of Publication 2004 Authors Tschudi, William F., Tengfang T. Xu, Dale A. Sartor, Jonathan G. Koomey, Bruce Nordman, and Osman Sezgen Call Number LBNL-54163 Abstract Data Center facilities, prevalent in many industries and institutions are essential to Californias economy. Energy intensive data centers are crucial to Californias industries, and many other institutions (such as universities) in the state, and they play an important role in the constantly evolving communications industry. To better understand the impact of the energy requirements and energy efficiency improvement potential in these facilities, the California Energy Commissions PIER Industrial Program initiated this project with two primary focus areas: First, to characterize current data center electricity use; and secondly, to develop a research roadmap defining and prioritizing possible future public interest research and deployment efforts that would improve energy efficiency.

364

Overview of the Texas LoanSTAR Monitoring Program  

E-Print Network (OSTI)

The Texas LoanSTAR program is an eight year, $98 million revolving loan program, funded by oil overcharge dollars, for energy conservation retrofits in Texas state, local government and school buildings. The program began in 1988. Public sector institutions participating in the program must repay the loans according to estimated energy savings from an energy audit. This paper provides an overview of the monitoring program at Texas A&M University, the prime subcontractor to the Texas Governor's Energy Management Center on the LoanSTAR Program. As part of this program, a statewide energy Monitoring and Analysis Program (MAP) has been established. The major objectives of the LoanSTAR MAP are to: 1) verify energy and dollar savings of the retrofits, 2) reduce energy costs by identifying operational and maintenance improvements, 3) improve retrofit selection in future rounds of the LoanSTAR program, and 4) initiate a data base of energy use in institutional and commercial buildings in Texas. Currently, the program is monitoring hourly data from over two dozen building using public domain polling procedures that collect information from microcomputerbased field recorders supplied by several manufacturers. Future efforts will include investigating the feasibility of reducing energy monitoring costs by utilizing Energy Management and Control Systems (EMCS)-based monitoring and expand the program into additional sites.

Turner, W. D.

1990-01-01T23:59:59.000Z

365

Efficient Data Centers  

Science Conference Proceedings (OSTI)

Results and FindingsThis technical update provides an overview of airflow management using variable speed drives (VSDs) on direct expansion (DX) computer room air conditioners (CRACs), and particularly how reduced airflow can improve energy efficiency in data centers. VSDs on CRAC units coupled with good airflow management within a data center can have a dramatic impact on energy efficiency. Typically, a lot more cold air is circulated within conventional data centers ...

2012-12-20T23:59:59.000Z

366

Alternative Fuels Data Center: Vehicle Conversion Basics  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Vehicle Conversion Vehicle Conversion Basics to someone by E-mail Share Alternative Fuels Data Center: Vehicle Conversion Basics on Facebook Tweet about Alternative Fuels Data Center: Vehicle Conversion Basics on Twitter Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Google Bookmark Alternative Fuels Data Center: Vehicle Conversion Basics on Delicious Rank Alternative Fuels Data Center: Vehicle Conversion Basics on Digg Find More places to share Alternative Fuels Data Center: Vehicle Conversion Basics on AddThis.com... Vehicle Conversion Basics Photo of a Ford Transit Connect converted to run on compressed natural gas. A Ford Transit Connect converted to run on compressed natural gas. A converted vehicle or engine is one modified to use a different fuel or

367

Lederman Science Center  

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

Lederman Science Center: Fermilab Science for Kids and Educators LSC Home Plan a Visit DirectionsMap Exhibits: Overview - List - Physics Playground LSC Floorplan LSC Store...

368

Redesigning the data center  

Science Conference Proceedings (OSTI)

Faced with rising electricity costs, leading companies have begun revolutionizing the way data centers work, from the hardware to the buildings themselves.

Gregory Mone

2012-10-01T23:59:59.000Z

369

Energy efficient data centers  

E-Print Network (OSTI)

technologies and alternative cooling systems. Chandrakanttechnologies and alternative cooling systems. Chandrakantand cooling coils, perhaps located outside of the data center could be an attractive alternative

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-01-01T23:59:59.000Z

370

Center for Environmental Biotechnology  

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

Technology Program, the Energy Resources Program, and the Climate Change and Carbon Management Program. The Center for Environmental Biotechnology, houses all of the Ecology...

371

Solar Energy Research Center  

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

Solar Energy Research Center PROJECT DESCRIPTION SERC rendering The SERC building will be a 39,000 gsf building designed to house research laboratories and offices devoted to...

372

LANSCE | Lujan Center | Resources  

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

Laboratory Clean Room Laboratory For general questions, please contact the Lujan Center Clean Room Laboratory responsible: Jarek Majewski | jarek@lanl.gov | 505.667.8840...

373

Alma Center Curriculum Development.  

E-Print Network (OSTI)

??This project was completed in order to fulfill the need of the Alma Center, a local non-profit organization committed to educating men with a hi… (more)

Dolney, Kathryn E

2011-01-01T23:59:59.000Z

374

Information Center (Brochure)  

Science Conference Proceedings (OSTI)

This letter-fold brochure provides an overview of the tools, information, and partnership opportunities that the Office of Energy Efficiency and Renewable Energy Information Center offers.

Not Available

2010-10-01T23:59:59.000Z

375

Energy Frontier Research Centers  

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

Frontier Research Centers Science for our Nation's Energy Future US Department of Energy Office of Science www.energyfrontier.us 43 ABOVE: CFSES addresses safe, secure and...

376

IGPP: Astrophysics Research Center  

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

IGPP Home IGPP Astrophysics IGPP Planetary Sciences IGPP Mini Grant Seminars Phone Book LLNL Home The LLNL Astrophysics Research Center, led by Kem Cook, serves the aims of...

377

IGPP: Astrophysics Research Center  

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

IGPP Home IGPP Astrophysics IGPP Planetary Sciences IGPP Mini Grant Seminars Phone Book LLNL Home Geosciences: The IGPP Geosciences Research Center, headed by Lars Borg,...

378

BNL | Computational Science Center  

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

Computational Science Center Home Research Support Areas Publications Staff EBC Environmental, Biological, and Computational Sciences Directorate CSC image CSC image CSC image CSC...

379

NIST Child Care Center  

Science Conference Proceedings (OSTI)

... NIST Child Care Center Parent Handbook ... are planned across the curriculum in the areas of language arts, science, creative arts, math, music and ...

2012-10-15T23:59:59.000Z

380

Energy Center Center for Coal Technology Research  

E-Print Network (OSTI)

Production Gasification Power Plants Coking Liquid Fuels Environment Oxyfuels Byproducts Legislation Characteristics Infrastructures Railroads Waterways Gas Pipelines Power Grids Suite 326, Potter Engineering Center Infrastructure 6-4 6.3 The Midwest Power Grid 6-9 6.4 Midwest CO2 Gas Pipelines 6-15 6.5 References 6-18 #12

Fernández-Juricic, Esteban

Note: This page contains sample records for the topic "difference star center" 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

A NEAR-INFRARED STUDY OF THE STAR-FORMING REGION RCW 34  

SciTech Connect

We report the results of a near-infrared imaging study of a 7.8 Multiplication-Sign 7.8 arcmin{sup 2} region centered on the 6.7 GHz methanol maser associated with the RCW 34 star-forming region using the 1.4 m IRSF telescope at Sutherland. A total of 1283 objects were detected simultaneously in J, H, and K for an exposure time of 10,800 s. The J - H, H - K two-color diagram revealed a strong concentration of more than 700 objects with colors similar to what is expected of reddened classical T Tauri stars. The distribution of the objects on the K versus J - K color-magnitude diagram is also suggestive that a significant fraction of the 1283 objects is made up of lower mass pre-main-sequence stars. We also present the luminosity function for the subset of about 700 pre-main-sequence stars and show that it suggests ongoing star formation activity for about 10{sup 7} years. An examination of the spatial distribution of the pre-main-sequence stars shows that the fainter (older) part of the population is more dispersed over the observed region and the brighter (younger) subset is more concentrated around the position of the O8.5V star. This suggests that the physical effects of the O8.5V star and the two early B-type stars on the remainder of the cloud out of which they formed could have played a role in the onset of the more recent episode of star formation in RCW 34.

Van der Walt, D. J.; De Villiers, H. M.; Czanik, R. J. [Centre for Space Research, North-West University, Potchefstroom (South Africa)

2012-07-15T23:59:59.000Z

382

ENERGY STAR Low Carbon IT Campaign | ENERGY STAR  

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

real estate resources Congregation resources Corporate real estate resources Data center resources Entertainment venue resources Federal agency resources Grocery &...

383

Energy Star Lighting Verification Program (Program for the Evaluation and Analysis of Residential Lighting)  

SciTech Connect

The Program for the Evaluation and Analysis of Residential Lighting (PEARL) is a watchdog program. It was created in response to complaints received by utility program managers about the performance of certain Energy Star lighting products being promoted within their service territories and the lack of a self-policing mechanism within the lighting industry that would ensure the reliability of these products and their compliance with ENERGY STAR specifications. To remedy these problems, PEARL purchases and tests products that are available to the consumers in the marketplace. The Lighting Research Center (LRC) tests the selected products against the corresponding Energy Star specifications. This final report summarizes the experimental procedure and results of all cycles (Cycles 1 through 8) of PEARL program from the beginning of year 2000 to the end of 2007, along with the description of apparatus used, equipment calibration process, experimental methodology, and research findings from the testing. In each cycle of PEARL program, PEARL Board selects a list of Compact Fluorescent Lamp (CFL) and Residential Lighting Fixture (RLF) models that are Energy Star qualified. In Cycle 5, Cycle 7, and Cycle 8, no fixture models were selected. After that PEARL sponsors procure product samples for each selected model from different stores and locations in the retail market and send them to LRC for testing. LRC then receive and select the samples, and test them against Energy Star specifications. After the testing LRC analyze and report the results to PEARL Board. Totally 185 models of CFL and 52 models of RLF were tested in PEARL program. Along with the evolution of the Energy Star specifications from year 2000 to 2003, parameters that were required by Energy Star changed during the eight years of PEARL program. The testing parameters and number of samples tested in PEARL program also changed during this time. For example, in Cycle 1, three samples of each models were tested for their photometric and electrical parameters only; in Cycle 2, 1000-hour Lumen Maintenance and the Rapid Cycle Stress Test was added and an additional set of six samples of each models were tested for Rapid Cycle Stress Test. Also, Cycle 2 data analysis included the testing and verification results against both the 'then existing' specification dated 2000 and the 'then new' specification dated 8/9/2001. In Cycle 3, Lumen Maintenance at 40% life was added and the number of samples for photometric and electrical testing was increased to five. In Cycle 6, the number of samples for photometric and electrical testing increased again to ten so that five of them were tested in base-up position and five in base-down position. A total of 2375 CFL samples were tested in PEARL program, out of the more than 3000 CFL samples that were purchased for the testing purpose of this program.

Conan O'Rourke; Yutao Zhou

2007-12-31T23:59:59.000Z

384

EERE EnergyStar State Allocations | Department of Energy  

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

EERE EnergyStar State Allocations EERE EnergyStar State Allocations EEEnergyStarStateAllocations.pdf More Documents & Publications State Energy Efficient Appliance Rebate...

385

How the 1-100 ENERGY STAR score is calculated | ENERGY STAR  

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

is calculated Using the 1 - 100 ENERGY STAR score, you can understand how your building's energy consumption measures up against similar buildings nationwide. The ENERGY STAR score...

386

Wave Star Energy | Open Energy Information  

Open Energy Info (EERE)

Star Energy Star Energy Jump to: navigation, search Name Wave Star Energy Place Denmark Zip DK-2920 Product Denmark-based private wave device developer. References Wave Star Energy[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This company is involved in the following MHK Projects: Wave Star Energy 1 10 Scale Model Test This company is involved in the following MHK Technologies: C5 WaveStar This article is a stub. You can help OpenEI by expanding it. Wave Star Energy is a company located in Denmark . References ↑ "Wave Star Energy" Retrieved from "http://en.openei.org/w/index.php?title=Wave_Star_Energy&oldid=678928" Categories: Clean Energy Organizations

387

Students & Kids : BioEnergy Science Center  

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

Our Earth needs Your Help The Department of Energy BioEnergy Science Center (BESC) created this web site to give you the tools and resources to start making a difference. Learn...

388

Buildings Energy Data Book: 9.1 ENERGY STAR  

Buildings Energy Data Book (EERE)

3 3 ENERGY STAR Commercial and Institutional Buildings and Industrial Plants (1) Building Type 1999 Office 2000 K-12 School 2001 Retail 2002 Hospital (General and Surgical) 2003 Supermarket/Grocery 2004 Hotel 2005 Bank/Financial Institution 2006 Warehouse (Unrefrigerated) 2007 Courthouse 2008 Medical Office 2009 Residence Hall/Dormitory 2010 Senior Care Facility 2011 Data Center Total (2) Warehouse (Refrigerated) House of Worship Industrial Plants Total Note(s): Source(s): 1) Data as of February 13, 2012. Additional buildings may qualify after applications are reviewed. 2) Totals are less than sum of individual years since some buildings have multiple years listed. Totals include buildings qualified in 2012. EPA, Database of ENERGY STAR Labeled Buildings and Plants, accessed February 13, 2012

389

ENERGY STAR Success Story Mark Twain House Museum  

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

ENERGY STAR Success Story: ENERGY STAR Success Story: Mark Twain House & Museum Built in 1874, the Mark Twain House & Museum is considered one of the premier tourist attractions in the State of Connecticut. This 19-room Victorian home changed owners numerous times before the Mark Twain Memorial and Library Commission, a non-profit organization chartered by the State of Connecticut, purchased and restored the house in 1929 for historical and educational purposes. The Museum comprises the 12,298-square-foot Main House (the historic house of Mark Twain) and the 4,935-square- foot Carriage House (the location of all staff offices). The state-of-the-art 33,000-square-foot Museum Center was added in 2003, thrusting the Mark Twain House & Museum into the 21 st Century. The Main

390

Northwestern University Transportation Center  

E-Print Network (OSTI)

Northwestern University Transportation Center 2011 Business Advisory Committee NUTC #12;#12;I have the pleasure of presenting our Business Advisory Committee members--a distinguished group of transportation industry lead- ers who have partnered with the Transportation Center in advancing the state of knowledge

Bustamante, Fabián E.

391

Live Working Resource Center  

Science Conference Proceedings (OSTI)

EPRI created the Live Working Resource Center web site to provide utilities the critical information they need to conduct live work safely and efficiently. This report is a summary of work performed in 2007 on the web site. See EPRI's Live Working Resource Center.

2007-11-30T23:59:59.000Z

392

Harmonizing Global Metrics for Data Center Energy Efficiency, February 2,  

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

Harmonizing Global Metrics for Data Center Energy Efficiency, Harmonizing Global Metrics for Data Center Energy Efficiency, February 2, 2010 Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In This Section Campaigns Commercial building design Communications resources Energy management guidance Financial resources Portfolio Manager Products and purchasing Recognition Research and reports Service and product provider (SPP) resources

393

Energy Efficient Data Centers  

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

Federal Utility Partnership Working Group Federal Utility Partnership Working Group Will Lintner November 20, 2008 Williamsburg, VA 2 Why Data Centers? * Data centers are highly energy intensive and growing at a rapid rate - Consume 10 to 100 times more energy per square foot than typical office building * Data centers consumed about 45 billion kWh in 2005 and 61 billion kWh in 2006 - This accounts for nearly 1.2% and 1.5% of all U.S. electricity respectively * At current rate, power requirements for data centers could double in 5 years 3 Typical Data Center Energy Use Server Load /Computing Operations Cooling Equipment Power Conversions & Distribution 100 Units 33 Units Delivered 35 Units 4 4 Server Load/ Computing Operations Cooling Equipment Power Conversion & Distribution Alternative Power Generation * High voltage distribution

394

LANL: Superconductivity Technology Center  

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

Sitemap | Lab Home | Phone Sitemap | Lab Home | Phone ABOUT LANL ContactsPhonebookPolicy CenterOrganizationMapsJobs Emergency NEWS LIBRARY JOBS Search Materials Physics & Applications: STC STC Home OUR FOCUS HTS Physics HTS Materials Development HTS Materials Processing Power Applications Electronic Materials FUTURE APPLICATIONS Biomedical Developments Magnetic Levitation Train MHD Ship CONTACTS Center Leader Ken Marken Program Administrator Brenda Espinoza Center Office Location: TA-03, Bdg. 0032, Rm. 141 Exploring technology at STC Superconductivity Technology Center (STC) The Superconductivity Technology Center (STC) coordinates a multidisciplinary program for research, development, and technology transfer in the area of high-temperature superconductivity. Our focus is on effective collaborations with American industry, universities, and other national laboratories to develop electric power and electronic device applications of high-temperature superconductors (HTS).

395

Alternative Fuels Data Center: About the Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

About About Printable Version Share this resource Send a link to Alternative Fuels Data Center: About the Alternative Fuels Data Center to someone by E-mail Share Alternative Fuels Data Center: About the Alternative Fuels Data Center on Facebook Tweet about Alternative Fuels Data Center: About the Alternative Fuels Data Center on Twitter Bookmark Alternative Fuels Data Center: About the Alternative Fuels Data Center on Google Bookmark Alternative Fuels Data Center: About the Alternative Fuels Data Center on Delicious Rank Alternative Fuels Data Center: About the Alternative Fuels Data Center on Digg Find More places to share Alternative Fuels Data Center: About the Alternative Fuels Data Center on AddThis.com... More in this section... Project Assistance News & Features

396

Old and new neutron stars  

Science Conference Proceedings (OSTI)

The youngest known radiopulsar in the rapidly spinning magnetized neutron star which powers the Crab Nebula, the remnant of the historical supernova explosion of 1054 AD. Similar neutron stars are probably born at least every few hundred years, but are less frequent than Galactic supernova explosions. They are initially sources of extreme relativistic electron and/or positron winds (approx.10/sup 38/s/sup -1/ of 10/sup 12/ eV leptons) which greatly decrease as the neutron stars spin down to become mature pulsars. After several million years these neutron stars are no longer observed as radiopulsars, perhaps because of large magnetic field decay. However, a substantial fraction of the 10/sup 8/ old dead pulsars in the Galaxy are the most probable source for the isotropically distributed ..gamma..-ray burst detected several times per week at the earth. Some old neutron stars are spun-up by accretion from companions to be resurrected as rapidly spinning low magnetic field radiopulsars. 52 references, 6 figures, 3 tables.

Ruderman, M.

1984-09-01T23:59:59.000Z

397

SIMILARITIES IN POPULATIONS OF STAR CLUSTERS  

SciTech Connect

We compare the observed mass functions and age distributions of star clusters in six well-studied galaxies: the Milky Way, Magellanic Clouds, M83, M51, and Antennae. In combination, these distributions span wide ranges of mass and age: 10{sup 2} {approx}< M/M{sub Sun} {approx}< 10{sup 6} and 10{sup 6} {approx}< {tau}/yr {approx}< 10{sup 9}. We confirm that the distributions are well represented by power laws: dN/dM{proportional_to}M{sup {beta}} with {beta} Almost-Equal-To -1.9 and dN/d{tau}{proportional_to}{tau}{sup {gamma}} with {gamma} Almost-Equal-To -0.8. The mass and age distributions are approximately independent of each other, ruling out simple models of mass-dependent disruption. As expected, there are minor differences among the exponents at a level close to the true uncertainties, {epsilon}{sub {beta}} {approx} {epsilon}{sub {gamma}} {approx} 0.1-0.2. However, the overwhelming impression is the similarity of the mass functions and age distributions of clusters in these different galaxies, including giant and dwarf, quiescent and interacting galaxies. This is an important empirical result, justifying terms such as 'universal' or 'quasi-universal'. We provide a partial theoretical explanation for these observations in terms of physical processes operating during the formation and disruption of the clusters, including star formation and feedback, subsequent stellar mass loss, and tidal interactions with passing molecular clouds. A full explanation will require additional information about the molecular clumps and star clusters in galaxies beyond the Milky Way.

Fall, S. Michael [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Chandar, Rupali, E-mail: fall@stsci.edu, E-mail: rupali.chandar@utoledo.edu [Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606 (United States)

2012-06-20T23:59:59.000Z

398

Energy efficient data centers  

SciTech Connect

Data Center facilities, prevalent in many industries and institutions are essential to California's economy. Energy intensive data centers are crucial to California's industries, and many other institutions (such as universities) in the state, and they play an important role in the constantly evolving communications industry. To better understand the impact of the energy requirements and energy efficiency improvement potential in these facilities, the California Energy Commission's PIER Industrial Program initiated this project with two primary focus areas: First, to characterize current data center electricity use; and secondly, to develop a research ''roadmap'' defining and prioritizing possible future public interest research and deployment efforts that would improve energy efficiency. Although there are many opinions concerning the energy intensity of data centers and the aggregate effect on California's electrical power systems, there is very little publicly available information. Through this project, actual energy consumption at its end use was measured in a number of data centers. This benchmark data was documented in case study reports, along with site-specific energy efficiency recommendations. Additionally, other data center energy benchmarks were obtained through synergistic projects, prior PG&E studies, and industry contacts. In total, energy benchmarks for sixteen data centers were obtained. For this project, a broad definition of ''data center'' was adopted which included internet hosting, corporate, institutional, governmental, educational and other miscellaneous data centers. Typically these facilities require specialized infrastructure to provide high quality power and cooling for IT equipment. All of these data center types were considered in the development of an estimate of the total power consumption in California. Finally, a research ''roadmap'' was developed through extensive participation with data center professionals, examination of case study findings, and participation in data center industry meetings and workshops. Industry partners enthusiastically provided valuable insight into current practice, and helped to identify areas where additional public interest research could lead to significant efficiency improvement. This helped to define and prioritize the research agenda. The interaction involved industry representatives with expertise in all aspects of data center facilities, including specialized facility infrastructure systems and computing equipment. In addition to the input obtained through industry workshops, LBNL's participation in a three-day, comprehensive design ''charrette'' hosted by the Rocky Mountain Institute (RMI) yielded a number of innovative ideas for future research.

Tschudi, William; Xu, Tengfang; Sartor, Dale; Koomey, Jon; Nordman, Bruce; Sezgen, Osman

2004-03-30T23:59:59.000Z

399

Evolution of massive stars losing mass and angular momentum supergiants  

SciTech Connect

Evolutionary sequences have been computed to central helium exhaustion for massive Population I star models with initial masses of 40, 60, 80, and 100 M/sub sun/. Mass loss occurs through radiatively driven winds and through the effects of nonthermal winds generated both by rotational shear turbulence during the mainsequence (MS) phase and by the acoustic energy flux from the convective envelope during the red supergiant phase. The size of the convective envelope in the red supergiant phase is found to depend on the mass loss history of the star, through the effect of mass loss on the position of the hydrogen shell source (HSS) and on the opacity of the envelope above the HSS. Previous evolutionary calculations have shown that, for low mass loss rates, a blue loop forms when the HSS contacts the discontinuity at the base of the convective envelope. In contrast, the higher mass loss rates considered here produce a blue loop only if sufficient mass loss occurs during the red supergiant phase to eliminate the convective envelope entirely. On the other hand, sufficiently high mass loss rates during the MS phase can remove most of the hydrogen-rich envelope, and then the red supergiant phase does not occur. In these models the mass loss and evolutionary patterns for a star depend on its initial rotational speed, which in actual stars is expected to vary from star to star. The observed blue-to-red supergiant ratios are then interpreted as weighted means of different evolutionary patterns resulting from a spread of initial rotational speeds. The same interpretation may extend to Wolf-Rayet stars.

Sreenivasan, S.R.; Wilson, W.J.F.

1985-03-15T23:59:59.000Z

400

New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars  

E-Print Network (OSTI)

We present the results of the continuation of our magnetic survey with FORS1 at the VLT of a sample of B-type stars consisting of confirmed or candidate beta Cephei stars and Slowly Pulsating B (hereafter SPB) stars, along with a small number of normal B-type stars. A weak mean longitudinal magnetic field of the order of a few hundred Gauss was detected in three beta Cephei stars and two stars suspected to be beta Cephei stars, in five SPB stars and eight stars suspected to be SPB stars. Additionally, a longitudinal magnetic field at a level larger than 3sigma has been diagnosed in two normal B-type stars, the nitrogen-rich early B-type star HD52089 and in the B5 IV star HD153716. Roughly one third of beta Cephei stars have detected magnetic fields: Out of 13 beta Cephei stars studied to date with FORS1, four stars possess weak magnetic fields, and out of the sample of six suspected beta Cephei stars two show a weak magnetic field. The fraction of magnetic SPBs and candidate SPBs is found to be higher: roughl...

Hubrig, S; De Cat, P; Schöller, M; Morel, T; Ilyin, I

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

FORMING AN O STAR VIA DISK ACCRETION?  

Science Conference Proceedings (OSTI)

We present a study of outflow, infall, and rotation in a {approx}10{sup 5} L{sub Sun} star-forming region, IRAS 18360-0537, with Submillimeter Array and IRAM 30 m observations. The 1.3 mm continuum map shows a 0.5 pc dust ridge, of which the central compact part has a mass of {approx}80 M{sub Sun} and harbors two condensations, MM1 and MM2. The CO (2-1) and SiO (5-4) maps reveal a biconical outflow centered at MM1, which is a hot molecular core (HMC) with a gas temperature of 320 {+-} 50 K and a mass of {approx}13 M{sub Sun }. The outflow has a gas mass of 54 M{sub Sun} and a dynamical timescale of 8 Multiplication-Sign 10{sup 3} yr. The kinematics of the HMC are probed by high-excitation CH{sub 3}OH and CH{sub 3}CN lines, which are detected at subarcsecond resolution and unveil a velocity gradient perpendicular to the outflow axis, suggesting a disk-like rotation of the HMC. An infalling envelope around the HMC is evidenced by CN lines exhibiting a profound inverse P Cygni profile, and the estimated mass infall rate, 1.5 Multiplication-Sign 10{sup -3} M{sub Sun} yr{sup -1}, is well comparable to that inferred from the mass outflow rate. A more detailed investigation of the kinematics of the dense gas around the HMC is obtained from the {sup 13}CO and C{sup 18}O (2-1) lines; the position-velocity diagrams of the two lines are consistent with the model of a free-falling and Keplerian-like rotating envelope. The observations suggest that the protostar of a current mass {approx}10 M{sub Sun} embedded within MM1 will develop into an O star via disk accretion and envelope infall.

Qiu Keping [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, D-53121 Bonn (Germany); Zhang Qizhou [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Beuther, Henrik; Fallscheer, Cassandra, E-mail: kqiu@mpifr-bonn.mpg.de [Max-Planck-Institut fuer Astronomie, Koenigstuhl 17, D-69117 Heidelberg (Germany)

2012-09-10T23:59:59.000Z

402

ENERGY STAR Score for Warehouses  

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

Warehouses in the United States Page 1 Warehouses in the United States Page 1 ENERGY STAR Score for Warehouses in the United States Technical Reference OVERVIEW The ENERGY STAR Score for warehouses applies to unrefrigerated or refrigerated buildings that are used to store goods, manufactured products, merchandise or raw materials. The objective of the ENERGY STAR score is to provide a fair assessment of the energy performance of a property relative to its peers, taking into account the climate, weather, and business activities at the property. To identify the aspects of building activity that are significant drivers of energy use and then normalize for those factors, a statistical analysis of the peer building population is

403

SNAPSHOT Â… THE ENERGY STAR  

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

Fall 2008 Introduction At mid-year 2008*, commercial and industrial (C&I) leaders continued to make great progress in their efforts to improve energy efficiency and reduce greenhouse gas emissions across their buildings and facilities. In the first six months of 2008, key indicators of progress have already exceeded activity levels from 2007. More than 1,500 organizations and individuals now participate in the ENERGY STAR Challenge Close to 2 billion new square feet of commercial building floor space rated in the first half of the year bringing the total to about 9.5 billion over 71,000 buildings Labels awarded through June 2008 almost equal the 2007 total, with about 5,000 facilities now qualified as ENERGY STAR ENERGY STAR Leader activity on the rise this year; almost 60 commercial partners achieved key

404

Toy Stars in two dimensions  

E-Print Network (OSTI)

Toy Stars are gas masses where the compressibility is treated without approximations but gravity is replaced by a force which, for any pair of masses, is along their line of centres and proportional to their separation. They provide an invaluable resource for testing the suitability of numerical codes for astrophysical gas dynamics. In this paper we derive the equations for both small amplitude oscillations and non linear solutions for rotating and pulsating Toy Stars in two dimensions, and show that the solutions can be reduced to a small number of ordinary differential equations. We compare the accurate solutions of these equations with Smoothed Particle Hydrodynamics (SPH) simulations. The two dimensional Toy Star solutions are found to provide an excellent benchmark for SPH algorithms, highlighting many of the strengths and also some weaknesses of the method.

J. J. Monaghan; D. J. Price

2005-10-25T23:59:59.000Z

405

Teacher Resource Center  

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

Teacher Resource Center: Putting It All Together Teacher Resource Center: Putting It All Together TRC Home TRC Fact Sheet Library Curricular Resources Science Fair Resources Bibliographies sciencelines The Best of sciencelines Archives Annotated List of URLs Catalog Teacher's Lounge Full Workshop Catalog Customized Workshops Scheduled Workshops Special Opportunities Teacher Networks Science Lab Fermilab Science Materials Samplers Order Form Science Safety Issues Tech Room Fermilab Web Resources The Teacher Resource Center provides a preview collection of K-12 instructional materials. TRC services include professional development workshops, consultation assistance, bibliographies and reference assistance. Educators have access to curriculum materials, books, multimedia, educational supply catalogs, periodicals and newsletters. The collection

406

High redshift star-forming galaxies in absorption and emission  

E-Print Network (OSTI)

criteria is necessary to compare the effectiveness of different methods and to quantify the completeness of each method. One alternative to LBG selection is BzK selection (Daddi et al. 2004). The z-K and B-z colors find and distinguish between star...

Quider, Anna Marie

2011-07-12T23:59:59.000Z

407

Nuclear Physics of Neutron Stars  

E-Print Network (OSTI)

Understanding the equation of state (EOS) of cold nuclear matter, namely, the relation between the pressure and energy density, is a central goal of nuclear physics that cuts across a variety of disciplines. Indeed, the limits of nuclear existence, the collision of heavy ions, the structure of neutron stars, and the dynamics of core-collapse supernova, all depend critically on the equation of state of hadronic matter. In this contribution I will concentrate on the special role that nuclear physics plays in constraining the EOS of cold baryonic matter and its impact on the properties of neutron stars.

J. Piekarewicz

2009-01-28T23:59:59.000Z

408

Carbon-enhanced metal-poor stars and thermohaline mixing  

E-Print Network (OSTI)

One possible scenario for the formation of carbon-enhanced metal-poor stars is the accretion of carbon-rich material from a binary companion which may no longer visible. It is generally assumed that the accreted material remains on the surface of the star and does not mix with the interior until first dredge-up. However, thermohaline mixing should mix the accreted material with the original stellar material as it has a higher mean molecular weight. We investigate the effect that this has on the surface abundances by modelling a binary system of metallicity Z=0.0001 with a 2 solar mass primary star and a 0.74 solar mass secondary star in an initial orbit of 4000 days. The accretion of material from the wind of the primary leads to the formation of a carbon-rich secondary. We find that the accreted material mixes fairly rapidly throughout 90% of the star, with important consequences for the surface composition. Models with thermohaline mixing predict very different surface abundances after first dredge-up compared to canonical models of stellar evolution.

Richard J. Stancliffe; Evert Glebbeek; Robert G. Izzard; Onno R. Pols

2007-02-06T23:59:59.000Z

409

The Neutron Stars of Soft X-Ray Transients  

E-Print Network (OSTI)

Soft X-ray Transients (SXRTs) have long been suspected to contain old, weakly magnetic neutron stars that have been spun up by accretion torques. After reviewing their observational properties, we analyse the different regimes that likely characterise the neutron stars in these systems across the very large range of mass inflow rates, from the peak of the outbursts to the quiescent emission. While it is clear that close to the outburst maxima accretion onto the neutron star surface takes place, as the mass inflow rate decreases, accretion might stop at the magnetospheric boundary because of the centrifugal barrier provided by the neutron star. For low enough mass inflow rates (and sufficiently short rotation periods), the radio pulsar mechanism might turn on and sweep the inflowing matter away. The origin of the quiescent emission, observed in a number of SXRTs at a level of ~10^(32)-10^(33) erg/s, plays a crucial role in constraining the neutron star magnetic field and spin period. Accretion onto the neutron...

Campana, S; Mereghetti, S; Stella, L; Tavani, M

1998-01-01T23:59:59.000Z

410

Intense Electromagnetic Outbursts from Collapsing Hypermassive Neutron Stars  

E-Print Network (OSTI)

We study the gravitational collapse of a magnetized neutron star using a novel numerical approach able to capture both the dynamics of the star and the behavior of the surrounding plasma. In this approach, a fully general relativistic magnetohydrodynamics implementation models the collapse of the star and provides appropriate boundary conditions to a force-free model which describes the stellar exterior. We validate this strategy by comparing with known results for the rotating monopole and aligned rotator solutions and then apply it to study both rotating and non-rotating stellar collapse scenarios, and contrast the behavior with what is obtained when employing the electrovacuum approximation outside the star. The non-rotating electrovacuum collapse is shown to agree qualitatively with a Newtonian model of the electromagnetic field outside a collapsing star. We illustrate and discuss a fundamental difference between the force-free and electrovacuum solutions, involving the appearance of large zones of electric-dominated field in the vacuum case. This provides a clear demonstration of how dissipative singularities appear generically in the non-linear time-evolution of force-free fluids. In both the rotating and non-rotating cases, our simulations indicate that the collapse induces a strong electromagnetic transient. In the case of sub-millisecond rotation, the magnetic field experiences strong winding and the transient carries much more energy. This result has important implications for models of gamma-ray bursts.

Luis Lehner; Carlos Palenzuela; Steven L. Liebling; Christopher Thompson; Chad Hanna

2011-12-12T23:59:59.000Z

411

Evolution of the First Stars with Dark Matter Burning  

E-Print Network (OSTI)

Recent theoretical studies have revealed the possibly important role of the capture and annihilation process of weakly interacting massive particles (WIMPs) for the first stars. Using new evolutionary models of metal-free massive stars, we investigate the impact of such ``dark matter burning'' for the first stars in different environments of dark matter (DM) halos, in terms of the ambient WIMP density (rho_chi). We find that, in agreement with existing literature, stellar life times can be significantly prolonged for a certain range of rho_\\chi (i.e., 10^{10} ~ 2*10^{11} GeV/cm3 may not undergo nuclear burning stages, confirming the previous work, and that ionizing photon fluxes from such DM supported stars are very weak. Delayed metal enrichment and slow reionization in the early universe would have resulted if most of the first stars had been born in DM halos with such high rho_\\chi, unless it had been lowered significantly below the threshold for efficient DM burning on a short time scale.

Sung-Chul Yoon; Fabio Iocco; Shizuka Akiyama

2008-06-17T23:59:59.000Z

412

Mergers of binary neutron stars with realistic spin  

E-Print Network (OSTI)

Simulations of binary neutron stars have seen great advances in terms of physical detail and numerical quality. However, the spin of the neutron stars, one of the simplest global parameters of binaries, remains mostly unstudied. We present the first, fully nonlinear general relativistic dynamical evolutions of the last three orbits for constraint satisfying initial data of spinning neutron star binaries, with astrophysically realistic spins aligned and anti-aligned to the orbital angular momentum. The initial data is computed with the constant rotational velocity approach. The dynamics of the systems is analyzed in terms of gauge-invariant binding energy vs. orbital angular momentum curves. By comparing to a binary black hole configuration we can estimate the different tidal and spin contributions to the binding energy for the first time. First results on the gravitational wave forms are presented. The phase evolution during the orbital motion is significantly affected by spin-orbit interactions, leading to delayed or early mergers. Furthermore, a frequency shift in the main emission mode of the hyper massive neutron star is observed. Our results suggest that a detailed modeling of merger waveforms requires the inclusion of spin, even for the moderate magnitudes observed in binary neutron star systems.

Sebastiano Bernuzzi; Tim Dietrich; Wolfgang Tichy; Bernd Bruegmann

2013-11-18T23:59:59.000Z

413

Alliance Star Energy LLC | Open Energy Information  

Open Energy Info (EERE)

Star Energy LLC Jump to: navigation, search Name Alliance Star Energy LLC Place California Utility Id 56929 References EIA Form EIA-861 Final Data File for 2010 - File220101...

414

Solar Star NAFB LLC | Open Energy Information  

Open Energy Info (EERE)

Star NAFB LLC Jump to: navigation, search Name Solar Star NAFB LLC Place Nevada Utility Id 56203 References EIA Form EIA-861 Final Data File for 2010 - File220101 LinkedIn...

415

Note on star-autonomous comonads  

E-Print Network (OSTI)

We develop an alternative approach to star-autonomous comonads via linearly distributive categories. It is shown that in the autonomous case the notions of star-autonomous comonad and Hopf comonad coincide.

Pastro, Craig

2010-01-01T23:59:59.000Z

416

Photos and graphics | ENERGY STAR Buildings & Plants  

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

guidelines Refer to the ENERGY STAR Identity Guidelines for proper usage of the ENERGY STAR and Portfolio Manager marks. Graphics Click on a graphic to bring up a larger...

417

Advance your energy program | ENERGY STAR  

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

corporate energy directors is without parallel. Join ENERGY STAR and get connected to the learning curve. Learn about world-class energy programs. EPA has profiled key ENERGY STAR...

418

Cold quark matter in compact stars  

Science Conference Proceedings (OSTI)

We used an equation of state for the cold quark matter to the study of properties of quark stars. We also discuss the absolute stability of quark matter and compute the mass-radius relation for self-bound stars.

Franzon, B.; Fogaca, D. A.; Navarra, F. S. [Instituto de Fisica, Universidade de Sao Paulo Rua do Matao, Travessa R, 187, 05508-090 Sao Paulo, SP (Brazil); Horvath, J. E. [Instituto de Astronomia, Geofisica e Ciencias Atmosfericas, Universidade de Sao Paulo, Rua do Matao, 1226, 05508-090, Sao Paulo, SP (Brazil)

2013-03-25T23:59:59.000Z

419

Energy strategy for the future | ENERGY STAR  

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

Skip to main content ENERGY STAR logo Skip directly to page content Facebook Twitter YouTube Our Blog Search Search Energy Efficient Products Energy Efficient Products ENERGY STAR...

420

Luminosity Bias (II): The Cosmic Web of the First Stars  

E-Print Network (OSTI)

Understanding the formation and evolution of the first stars and galaxies represents one of the most exciting frontiers in astronomy. Since the universe was filled with neutral hydrogen at early times, the most promising method for observing the epoch of the first stars is using the prominent 21-cm spectral line of the hydrogen atom. Current observational efforts are focused on the reionization era (cosmic age t ~ 500 Myr), with earlier times considered much more challenging. However, the next frontier of even earlier galaxy formation (t ~ 200 Myr) is emerging as a promising observational target. This is made possible by a recently noticed effect of a significant relative velocity between the baryons and dark matter at early times. The velocity difference suppresses star formation, causing a unique form of early luminosity bias. The spatial variation of this suppression enhances large-scale clustering and produces a prominent cosmic web on 100 comoving Mpc scales in the 21-cm intensity distribution. This stru...

Barkana, Rennan

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Data Centers and Servers  

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

Data centers are one of the most energy-intensive building types, consuming 10 to 50 times the energy per floor space of a typical commercial office building. Collectively, these spaces account for...

422

Lujan Center User Guide  

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

materials. It was funded by DOE and constructed at the Lujan Center, coming on line in the summer of 2001. SMARTS provides an exciting range of capabilities for studying...

423

Dog Center of Gravity  

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

Dog Center of Gravity Name: Dania Status: Student Grade: 9-12 Location: AZ Country: USA Date: NA Question: Currently in physics we are working with projectile motion. I am...

424

APS Conference Center  

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

of the Argonne Guest House, a full-service, professionally-managed hotel and restaurant. For Conference Center information or reservations, call (630) 252-4913 or send an...

425

EV Technical Center  

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

March 2001 AQMD CONTRACT 00192 Project Number: TC-00-0101 Report Number: TC-00-0101-TR03 Electric Vehicle Technical Center Prepared by: Michel Wehrey Juan C. Argueta Julie M....

426

Content Value Center  

Science Conference Proceedings (OSTI)

Identifies and prioritizes emergent themes impacting AOCS members and other professionals involved with fats, oils and other bio-based sources. Content Value Center Governing Board annual aocs AOCS Governing Board fats history information materials oils

427

Technical Value Center  

Science Conference Proceedings (OSTI)

Identifies opportunities to increase awareness and utilization of AOCS Technical Services activities and products. Technical Value Center AOCS History and Governance about us aocs committees contact us division council fats governing board history

428

Networking Value Center  

Science Conference Proceedings (OSTI)

Identifies opportunities and structures that foster networking amongst participants for the purpose of building value into the experience. Networking Value Center AOCS History and Governance about us aocs committees contact us division council fat

429

Electron Microscopy Center  

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

Ewoldt, Z. Liang, R. Edwin Garcia, E. A. Stach, T. D. Sands (Purdue U. and Birck Nanotechnology Center); N. J. Zaluzec (Argonne-MSD-EMC) Diamond Nanowires and the Mechanism of...

430

Washington National Records Center  

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

Washington National Records Center Washington D.C. 20404 Annette Black, IM-23, 301-903-3842 Annette.Black@hq.doe.gov John E. Davenport, Director Records Management Div. IM23270CC...

431

Data Center Power Consumption  

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

Center Power Consumption Center Power Consumption A new look at a growing problem Fact - Data center power density up 10x in the last 10 years 2.1 kW/rack (1992); 14 kW/rack (2007) Racks are not fully populated due to power/cooling constraints Fact - Increasing processor power Moore's law Fact - Energy cost going up 3 yr. energy cost equivalent to acquisition cost Fact - Iterative power life cycle Takes as much energy to cool computers as it takes to power them. Fact - Over-provisioning Most data centers are over-provisioned with cooling and still have hot spots November 2007 SubZero Engineering An Industry at the Crossroads Conflict between scaling IT demands and energy efficiency Server Efficiency is improving year after year Performance/Watt doubles every 2 years Power Density is Going Up

432

Center Scientists Assist Mexico  

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

Center Scientists Assist Mexico The U.S. Agency for International Development (USAID) has approved funds for LBL to provide technical assistance to Mexico's Comisi-n Nacional de...

433

The difference between source and site energy | ENERGY STAR  

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

Manager helps you save The benchmarking starter kit Identify your property type Enter data into Portfolio Manager The data quality checker How Portfolio Manager calculates...

434

ENERGY STAR Industrial Plant Certification: Professional Engineers...  

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

Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program...

435

New lambda Bootis stars with a shell  

E-Print Network (OSTI)

We publish here the second part of our spectroscopic survey at high dispersion of some known and suspected lambda Bootis stars with a view to detecting circumstellar shell features. Eight stars of our sample exhibit such features. These stars are fast rotators, a result which is in line with Holweger and Rentzsch-Holm's study (1995). The analysis of the photometric data has allowed us to confirm the exclusion of a few stars misclassified from the lambda Bootis group.

B. Hauck; D. Ballereau; J. Chauville

1997-09-02T23:59:59.000Z

436

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

437

Join ENERGY STAR as a partner | ENERGY STAR Buildings & Plants  

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

Join ENERGY STAR as a partner Join ENERGY STAR as a partner Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can ENERGY STAR help your business? Get started Join ENERGY STAR as a partner Service and Product Provider associations partnering with ENERGY STAR ENERGY STAR service & product provider training series Service and product provider's marketing toolkit

438

A Heavy Flavor Tracker for STAR  

Science Conference Proceedings (OSTI)

The STAR Collaboration proposes to construct a state-of-the-art microvertex detector,the Heavy Flavor Tracker (HFT), utilizing active pixel sensors and silicon strip technology. The HFT will significantly extend the physics reach of the STAR experiment for precision measurement of the yields and spectra of particles containing heavy quarks. This will be accomplished through topological identification of D mesons by reconstruction of their displaced decay vertices with a precision of approximately 50 mu m in p+p, d+A, and A+A collisions. The HFT consists of 4 layers of silicon detectors grouped into two sub-systems with different technologies, guaranteeing increasing resolution when tracking from the TPC and the Silicon Strip Detector (SSD) towards the vertex of the collision. The Intermediate Silicon Tracker (IST), consisting of two layers of single-sided strips, is located inside the SSD. Two layers of Silicon Pixel Detector (PIXEL) are inside the IST. The PIXEL detectors have the resolution necessary for a precision measurement of the displaced vertex. The PIXEL detector will use CMOS Active Pixel Sensors (APS), an innovative technology never used before in a collider experiment. The APSsensors are only 50 mu m thick and at a distance of only 2.5 cm from the interaction point. This opens up a new realm of possibilities for physics measurements. In particular, a thin detector (0.28percent radiation length per layer) in STAR makes it possible to do the direct topological reconstruction of open charm hadrons down to very low pT by the identification of the charged daughters of the hadronic decay.

Chasman, C.; Beavis, D.; Debbe, R.; Lee, J.H.; Levine, M.J.; Videbaek, F.; Xu, Z.; Kleinfelder, S.; Li, S.; Cendejas, R.; Huang, H.; Sakai, S.; Whitten, C.; Joseph, J.; Keane, D.; Margetis, S.; Rykov, V.; Zhang, W.M.; Bystersky, M.; Kapitan, J.; Kushpil, V.; Sumbera, M.; Baudot, J.; Hu-Guo, C.; Shabetai, A.; Szelezniak, M.; Winter, M.; Kelsey, J.; Milner, R.; Plesko, M.; Redwine, R.; Simon, F.; Surrow, B.; Van Nieuwenhuizen, G.; Anderssen, E.; Dong, X.; Greiner, L.; Matis, H.S.; Morgan, S.; Ritter, H.G.; Rose, A.; Sichtermann, E.; Singh, R.P.; Stezelberger, T.; Sun, X.; Thomas, J.H.; Tram, V.; Vu, C.; Wieman, H.H.; Xu, N.; Hirsch, A.; Srivastava, B.; Wang, F.; Xie, W.; Bichsel, H.

2008-02-25T23:59:59.000Z

439

Theory of cooling neutron stars versus observations  

E-Print Network (OSTI)

We review current state of neutron star cooling theory and discuss the prospects to constrain the equation of state, neutrino emission and superfluid properties of neutron star cores by comparing the cooling theory with observations of thermal radiation from isolated neutron stars.

Yakovlev, D G; Kaminker, A D; Potekhin, A Yu

2007-01-01T23:59:59.000Z

440

Diagnosability of star graphs with missing edges  

Science Conference Proceedings (OSTI)

In this paper, we study the system diagnosis on an n-dimensional star under the comparison model. Following the concept of local diagnosability [3], the strong local diagnosability property [7] is discussed; this property describes the equivalence of ... Keywords: Comparison diagnosis model, Extended star structure, Local diagnosability, MM* diagnosis model, Star graph, Strong local diagnosability property

Chieh-Feng Chiang; Guo-Huang Hsu; Lun-Min Shih; Jimmy J. M. Tan

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "difference star center" 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

Data Center Optimization Plan Federal Data Center Consolidation Initiative  

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

Data Center Optimization Plan Data Center Optimization Plan Federal Data Center Consolidation Initiative Public Release 9.30.11 U.S. Department of Energy | Office of the Chief Information Officer 2 Federal Data Center Consolidation Initiative Department of Energy Data Center Optimization Plan Public Release - 09.30.11 1. Introduction ..................................................................................................................................... 3 2. Agency Goals for Data Center Optimization .................................................................................... 5 3. Implementing Shared Services/Multi-tenancy ................................................................................. 5 4. Agency Approach, Rationale and Timeline ...................................................................................... 6

442

Asteroseismology of chemically peculiar stars  

E-Print Network (OSTI)

Pulsational variability is observed in several types of main sequence stars with anomalous chemical abundances. In this contribution I summarize the relationship between pulsations and chemical peculiarities, giving special emphasis to rapid oscillations in magnetic Ap stars. These magneto-acoustic pulsators provide unique opportunities to study the interaction of pulsations, chemical inhomogeneities, and strong magnetic fields. Time-series monitoring of rapidly oscillating Ap stars using high-resolution spectrometers at large telescopes and ultra-precise space photometry has led to a number of important breakthroughs in our understanding of these interesting objects. Interpretation of the roAp frequency spectra has allowed constraining fundamental stellar parameters and probing poorly known properties of the stellar interiors. At the same time, investigation of the pulsational wave propagation in chemically stratified atmospheres of roAp stars has been used as a novel asteroseismic tool to study pulsations as a function of atmospheric height and to map in detail the horizontal structure of the magnetically-distorted p-modes.

O. Kochukhov

2008-12-01T23:59:59.000Z

443

Fourier decomposition and frequency analysis of the pulsating stars with PRRc and RRab variables. Separation criteria and particularities  

E-Print Network (OSTI)

The OGLE database is revisited to investigate in more detail the properties of the Fourier parameters. Methodological improvements led us to identify a clear separation among High-Amplitude Delta Scuti (HADS), RRc and RRab stars. The bimodal distribution of the R21 parameter in HADS stars is explained as a contamination effect from RRc stars: there is evidence that all stars with 0.20RRc variables. The previously claimed existence of a subclass of unusual HADS is demonstrated to be a spurious result. Candidate overtone pulsators are found among HADS and RRc variables. The properties of the Fourier parameters are discussed as a function of the physical conditions in the stars involved. Among the field RRab stars we detected different light-curve groups producing distinct "tails" in the Fourier plots for P>0.55 d; evolutionary phases or the combination of different physical conditions (not only metallicity) are suggested to explain this separation, observed also in the cluster RRab stars. The stellar parameters of RRc stars in a given globular cluster show different tendencies than those of RRc stars from different clusters.

Ennio Poretti

2001-03-29T23:59:59.000Z

444

Brookhaven Center (Bldg. 30), Science Education Center (Bldg...  

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

Brookhaven Center (Bldg. 30), Science Education Center (Bldg. 438) & Berkner Hall (Bldg.488) Click the building photos to view a larger image. Download Map of BNL Central Campus...

445

Center for Intermodal Transportation Safety  

E-Print Network (OSTI)

Center for Intermodal Transportation Safety and Security Panagiotis Scarlatos, Ph.D., Director Transportation Safety and Security #12;Center for Intermodal Transportation Safety and Security Partners #12 evacuations · Tracking systems for hazardous materials Center for Intermodal Transportation Safety

Fernandez, Eduardo

446

Data Center Economizer Contamination and Humidity Study  

SciTech Connect

Data centers require continuous air conditioning to address high internal heat loads (heat release from equipment) and maintain indoor temperatures within recommended operating levels for computers. Air economizer cycles, which bring in large amounts of outside air to cool internal loads when weather conditions are favorable, could save cooling energy. There is reluctance from many data center owners to use this common cooling technique, however, due to fear of introducing pollutants and potential loss of humidity control. Concerns about equipment failure from airborne pollutants lead to specifying as little outside air as permissible for human occupants. To investigate contamination levels, particle monitoring was conducted at 8 data centers in Northern California. Particle counters were placed at 3 to 4 different locations within and outside of each data center evaluated in this study. Humidity was also monitored at many of the sites to determine how economizers affect humidity control. Results from this study indicate that economizers do increase the outdoor concentration in data centers, but this concentration, when averaged annually, is still below current particle concentration limits. Study results are summarized below: (1) The average particle concentrations measured at each location, both outside and at the servers, are shown in Table 1. Measurements show low particle concentrations at all data centers without economizers, regardless of outdoor particle concentrations. Particle concentrations were typically an order of magnitude below both outside particle concentrations and recently published ASHRAE standards. (2) Economizer use caused sharp increases in particle concentrations when the economizer vents were open. The particle concentration in the data centers, however, quickly dropped back to pre-economizer levels when the vents closed. Since economizers only allow outside air part of the time, the annual average concentrations still met the ASHRAE standards. However, concentration were still above the levels measured in data centers that do not use economizers (3) Current filtration in data centers is minimal (ASHRAE 40%) since most air is typically recycled. When using economizers, modest improvements in filtration (ASHRAE 85%) can reduce particle concentrations to nearly match the level found in data centers that do not use economizers. The extra cost associated with improve filters was not determined in this study. (4) Humidity was consistent and within the ASHRAE recommended levels for all data centers without economizers. Results show that, while slightly less steady, humidity in data centers with economizers can also be controlled within the ASHRAE recommended levels. However, this control of humidity reduces energy savings by limiting the hours the economizer vents are open. (5) The potential energy savings from economizer use has been measured in one data center. When economizers were active, mechanical cooling power dropped by approximately 30%. Annual savings at this center is estimated within the range of 60-80 MWh/year, representing approximately a 5% savings off the mechanical energy load of the data center. Incoming temperatures and humidity at this data center were conservative relative to the ASHRAE acceptable temperature and humidity ranges. Greater savings may be available if higher temperature humidity levels in the data center area were permitted. The average particle concentrations measured at each of the eight data center locations are shown in Table 1. The data centers ranged in size from approximately 5,000 ft{sup 2} to 20,000 ft{sup 2}. The indoor concentrations and humidity in Table 1 represents measurements taken at the server rack. Temperature measurements at the server rack consistently fell between 65-70 F. The Findings section contains a discussion of the individual findings from each center. Data centers currently operate under very low contamination levels. Economizers can be expected to increase the particle concentration in data centers, but the increase appears to still be

Shehabi, Arman; Tschudi, William; Gadgil, Ashok

2007-03-06T23:59:59.000Z

447

Building Energy Software Tools Directory: Star Perfomer  

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

Star Perfomer Star Perfomer Star Perfomer logo. Outlines simple steps to help office building owners, managers and tenants improve their greenhouse and energy efficiency performance, simply by asking some straightforward questions about the size, operating hours, current performance and equipment standards of the building. Star Performer is a diagnostic tool that uses the current operational energy performance of the building measured against a national benchmark, obtained through the Australian Building Greenhouse Rating scheme (see links below), as a basis for making recommendations. The tool covers all areas of the building which affect operational energy performance, including building fabric, equipment and operational practices. Star Perfomer will point you in the right direction and give

448

RAPID COOLING OF THE NEUTRON STAR IN CASSIOPEIA A AND r-MODE DAMPING IN THE CORE  

Science Conference Proceedings (OSTI)

We proposed an alternative explanation to the rapid cooling of neutron star in Cas A. It is suggested that the star experiences the recovery period following the r-mode heating process assuming the star is differentially rotating. Like the neutron-superfluidity-triggering model, our model predicts that the rapid cooling will continue for several decades. However, the behavior of the two models has slight differences, and they might be distinguished by observations in the near future.

Yang Shuhua; Zheng Xiaoping [Institute of Astrophysics, Huazhong Normal University, Wuhan 430079 (China); Pi Chunmei, E-mail: ysh@phy.ccnu.edu.cn, E-mail: zhxp@phy.ccnu.edu.cn [Department of Physics and Electronics, Hubei University of Education, Wuhan 430205 (China)

2011-07-10T23:59:59.000Z

449

Is there a link between the neutron-star spin and the frequency of the kilohertz quasi-periodic oscillations?  

E-Print Network (OSTI)

There is a general consensus that the frequencies of the kilohertz Quasi-Periodic Oscillations (kHz QPOs) in neutron-star low-mass X-ray binaries are directly linked to the spin of the neutron star. The root of this idea is the apparent clustering of the ratio of the frequency difference of the kHz QPOs and the neutron-star spin frequency, $\\Delta\

Mariano Mendez; Tomaso Belloni

2007-07-31T23:59:59.000Z

450

Solar-like oscillations in subgiant and red-giant stars: mixed modes  

E-Print Network (OSTI)

Thanks to significant improvements in high-resolution spectrographs and the launch of dedicated space missions MOST, CoRoT and Kepler, the number of subgiants and red-giant stars with detected oscillations has increased significantly over the last decade. The amount of detail that can now be resolved in the oscillation patterns does allow for in-depth investigations of the internal structures of these stars. One phenomenon that plays an important role in such studies are mixed modes. These are modes that carry information of the inner radiative region as well as from the convective outer part of the star allowing to probe different depths of the stars. Here, we describe mixed modes and highlight some recent results obtained using mixed modes observed in subgiants and red-giant stars.

Hekker, S

2013-01-01T23:59:59.000Z

451

Carbon stars in local group dwarf galaxies: C and O abundances  

E-Print Network (OSTI)

We present abundances of carbon and oxygen as well as abundance ratios 12C/13C for a sample of carbon stars in the LMC, SMC, Carina, Sculptor and Fornax dwarf galaxies. The overall metallicities in these dwarf galaxies are lower than in the galactic disc. The observations cover most of the AGB and we discuss the abundance patterns in different regions along the AGB. The abundances are determined from infrared spectra obtained with the ISAAC spectrometer on VLT (R=1500) and the Phoenix Spectrometer on Gemini South (R=50000). The synthetic spectra used in the analysis were computed with MARCS model atmospheres. We find that the oxygen abundance is decreasing with decreasing overall metallicity of the system while the C/O ratio at a given evolutionary phase is increasing with decreasing oxygen abundance. keywords Stars: abundances -- Stars: carbon -- Stars: AGB and post-AGB -- Galaxies: dwarf -- Local Group -- Infrared: stars

R. Wahlin; K. Eriksson; B. Gustafsson; K. H. Hinkle; D. L. Lambert; N. Ryde; B. Westerlund

2006-05-10T23:59:59.000Z

452

High-Frequency QPOs as a Product of Inner Disk Dynamics around Neutron Stars  

SciTech Connect

The kHz QPOs observed in a neutron star low mass X-ray binary are likely to be produced in the innermost regions of accretion disk around the neutron star. The rotational dynamics of the inner disk can be characterized by the presence of either sub-Keplerian or super-Keplerian accretion flow depending on the relative fastness of the neutron spin as compared to the Keplerian frequency at the inner disk radius. Within the magnetosphere-disk interaction model, the frequency difference between the two kHz QPOs observed in a given source can be estimated to be slightly higher than or nearly around the neutron star spin frequency if the neutron star is a slow rotator and less than the stellar spin frequency if the neutron star is a fast rotator.

Hakan Erkut, M. [Physics Department, Istanbul Kueltuer University, Atakoey Campus, Bakirkoey 34156, Istanbul (Turkey)

2011-09-21T23:59:59.000Z

453

Conference Center Lecture Hall  

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

401 Library Take the elevators downstairs to the Gallery. 401 Library Take the elevators downstairs to the Gallery. Conference Center Lecture Hall The Lecture Hall is a fully-equipped site for meetings of up to 540 people. This total includes: 237 seats on the Lecture Hall main level; 161 seats in the Lecture Hall balcony; and 142 seats in the two flexible rooms under the balcony (with interior walls removed). These rooms can also be used for meetings, both individually (32 classroom-style seats) or together (72 classroom-style seats). An additional 80 people can be seated in the nearby seminar room (A1100). Photo of the Conference Center's Lecture Hall Conference Center Gallery Seminar Room (A1101) The Seminar Room is located just off the Atrium. Conference Center Lecture Hall Atrium The Conference Center Atrium provides an open, elegant space ideal for registration, informational displays, and social hours. Computers are located just off the Atruim for e-mail access.

454

ARM - News Center  

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

Center Center Media Contact Lynne Roeder lynne-dot-roeder-at-pnnl-dot-gov @armnewsteam Field Notes Blog Topics Field Notes89 AGU 3 AMIE 10 ARM Aerial Facility 2 ARM Mobile Facility 1 6 ARM Mobile Facility 2 47 BAECC 1 BBOP 4 MAGIC 12 MC3E 17 SGP 2 STORMVEX 29 TCAP 3 Search News Search Blog News Center All Categories What's this? Social Media Guidance News Center All Categories Features and Releases Facility News Field Notes Blog feed Events feed Employment Research Highlights Data Announcements Education News Archive What's this? Social Media Guidance News Center Forecast Calls for Better Models: Examining the Core Components of Arctic Clouds to Clear Their Influence on Climate Jan 07, 2014 [ Research Highlights ] Predicting how atmospheric aerosols influence cloud formation and the resulting feedback to climate is a challenge that limits the accuracy of atmospheric models. This is especially true in the Arctic, where mixed-phase (both ice- and liquid-based) clouds are frequently observed, but the processes that determine their composition are poorly understood. To obtain a closer look [...]

455

Energy Implications of Economizer Use in California Data Centers  

E-Print Network (OSTI)

data centers in several climate zones in California. Resultsdifferent California climate zones. The modeling results andeffectiveness in different climate zones. The equipment

Shehabi, Arman

2008-01-01T23:59:59.000Z

456

Building Energy Software Tools Directory: Data Center Efficiency...  

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

if actual energy costs are different. Output Once data are input, the Data Center Energy Savings Calculator will show the expected energy savings in kilowatt-hours,...

457

SWP Carbon Sequestration Training Center  

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

Training Center Presentation, October 2010 SWP Carbon Sequestration Training Center Principal Investigators: New Mexico Tech, Andrew Campbell and Peter Mozley University of Utah,...

458

ITP_Data_Centers.xls  

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

Center HQs: Yorktown Heights, NY Project Location: Research Triangle Park, NC Reducing Data Center Cooling Energy through Software-Based Management Tools. The project will develop...

459

Center for Transportation Analysis Overview  

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

Center for Transportation Analysis Overview The mission of the Center for Transportation Analysis (CTA) at Oak Ridge National Laboratory (ORNL) is to provide solutions for assuring...

460

Business Center for Precious Metals  

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

Department of Energy Business Center for Precious Metals Department of Energy Business Center for Precious Metals Becky Eddy National Nuclear Security Administration Y-12 Site...

Note: This page contains sample records for the topic "difference star center" 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

New NIST Child Care Center  

Science Conference Proceedings (OSTI)

New NIST Child Care Center: The FY2009 appropriations included $7.2M for a new NIST Child Care Center. Will expand ...

2012-10-02T23:59:59.000Z

462

Lederman Science Center: Visitor's Handout  

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

Welcome Students Visitors Fermilab Ed Site Search Google Custom Search Lederman Science Center: Visitor's Handout Read this to make your visit to the exhibits at the Science Center...

463

Energy Star Rebate Finder | Open Energy Information  

Open Energy Info (EERE)

Energy Star Rebate Finder Energy Star Rebate Finder Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Star Rebate Finder Agency/Company /Organization: United States Environmental Protection Agency Sector: Energy Focus Area: Energy Efficiency Phase: Evaluate Options, Prepare a Plan Resource Type: Online calculator User Interface: Mobile Device Website: m.epa.gov/apps/energy.html Web Application Link: m.epa.gov/apps/energy.html Cost: Free Energy Star Rebate Finder Screenshot References: EPA[1] Logo: Energy Star Rebate Finder Find special offers and rebates from Energy Star partners by entering your zip code. Overview To encourage customers to buy energy efficient products, Energy Star partners occasionally sponsor special offers, such as sales tax exemptions or credits, or rebates on qualified products. Partners also occasionally

464

Green Star Alternative Energy | Open Energy Information  

Open Energy Info (EERE)

Green Star Alternative Energy Green Star Alternative Energy Jump to: navigation, search Name Green Star Alternative Energy Place San Diego, California Zip 92108 Sector Wind energy Product A US-based wind energy project developer. References Green Star Alternative Energy[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Green Star Alternative Energy is a company located in San Diego, California . References ↑ "Green Star Alternative Energy" Retrieved from "http://en.openei.org/w/index.php?title=Green_Star_Alternative_Energy&oldid=346056" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version Permanent link

465

Build Your Business with ENERGY STAR  

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

Service and Product Providers: Service and Product Providers: Build Your Business with ENERGY STAR ® Let ENERGY STAR Be Your Market Advantage Look to ENERGY STAR to help you bring value to your customers and more sales to your organization. Service and Product Providers (SPPs) are integral in helping existing commercial buildings use energy more efficiently. Partnering with ENERGY STAR provides you with access to free tools and resources to help you devise and implement energy- efficient strategies that are right for your customers: > Use the ENERGY STAR Brand to Enhance Your Credibility: Use the nationally recognized ENERGY STAR partner logo on your promotional materials to symbolize your commitment to delivering energy efficiency and financial savings to customers. Help customers build their reputation as environmental and social leaders through work with an ENERGY STAR SPP partner.

466

ORISE: Voluntary Protection Program (VPP) Star Status  

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

Voluntary Protection Program (VPP) Star Status Voluntary Protection Program (VPP) Star Status Within the U.S. Department of Energy's (DOE) Voluntary Protection Program (VPP), there are three levels of recognition: STAR, MERIT and DEMONSTRATION. Contractors' programs that meet the requirements for outstanding safety and health programs, earn VPP STAR status-the highest achievement level. In December of 2003, the Oak Ridge Institute for Science and Education (ORISE) first earned STAR distinction following a comprehensive evaluation of its application for the VPP program. At that time, ORISE was just the 21st DOE site and the first in Tennessee to earn such exemplary recognition. In 2011 ORISE received its seventh consecutive Star of Excellence award. Today, ORISE is one of more than two dozen DOE sites to achieve VPP STAR

467

COSMIC EVOLUTION OF STAR FORMATION ENHANCEMENT IN CLOSE MAJOR-MERGER GALAXY PAIRS SINCE z = 1  

Science Conference Proceedings (OSTI)

The infrared (IR) emission of 'M {sub *} galaxies' (10{sup 10.4} {star} {star formation enhancement induced by galaxy-galaxy interaction. Both the mean IR spectral energy distribution and mean IR luminosity of star-forming galaxies (SFGs) in SFG+SFG (S+S) pairs in the redshift bin of 0.6 star formation enhancement. SFGs in S+S pairs in a lower redshift bin of 0.2 star formation enhancement. Together with the significant and strong sSFR enhancement shown by SFGs in a local sample of S+S pairs (obtained using previously published Spitzer observations), our results reveal a trend for the star formation enhancement in S+S pairs to decrease with increasing redshift. Between z = 0 and z = 1, this decline of interaction-induced star formation enhancement occurs in parallel with the dramatic increase (by a factor of {approx}10) of the sSFR of single SFGs, both of which can be explained by the higher gas fraction in higher-z disks. SFGs in mixed pairs (S+E pairs) do not show any significant star formation enhancement at any redshift. The difference between SFGs in S+S pairs and in S+E pairs suggests a modulation of the sSFR by the intergalactic medium (IGM) in the dark matter halos hosting these pairs.

Xu, C. K.; Shupe, D. L.; Bock, J.; Bridge, C.; Cooray, A.; Lu, N.; Schulz, B. [California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125 (United States); Bethermin, M.; Aussel, H.; Elbaz, D.; Le Floc'h, E.; Riguccini, L. [Laboratoire AIM-Paris-Saclay, CEA/DSM/Irfu, CNRS, Universite Paris Diderot, CE-Saclay, pt courrier 131, F-91191 Gif-sur-Yvette (France); Berta, S.; Lutz, D.; Magnelli, B. [Max-Planck-Institut fuer Extraterrestrische Physik (MPE), Postfach 1312, D-85741 Garching (Germany); Conley, A. [Center for Astrophysics and Space Astronomy 389-UCB, University of Colorado, Boulder, CO 80309 (United States); Franceschini, A. [Dipartimento di Astronomia, Universita di Padova, vicolo Osservatorio, 3, I-35122 Padova (Italy); Marsden, G. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC V6T 1Z1 (Canada); Oliver, S. J. [Astronomy Centre, Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH (United Kingdom); Pozzi, F. [INAF-Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monte Porzio Catone (Italy); and others

2012-11-20T23:59:59.000Z

468

Metallicity Analysis of MACHO Galactic Bulge RR0 Lyrae stars from their Lightcurves  

E-Print Network (OSTI)

We present metallicities of 2690 RR0 Lyrae stars observed toward the MACHO Survey fields in the Galactic Bulge. These [Fe/H] values are based upon an empirically calibrated relationship that uses the Fourier coefficients of the light curve and are accurate to ~0.2 dex. The majority of the RR0 Lyrae stars in our sample are located in the Galactic Bulge, but 255 RR0 stars are associated with Sagittarius dwarf galaxy. We find that the RR0 Lyrae stars that belong to the Galactic Bulge have average metallicities [Fe/H] = -1.25, with a broad metallicity range from [Fe/H] = -2.26 to -0.15. The RR0 stars from Sagittarius dwarf galaxy have lower average metallicity of [Fe/H] = -1.55 \\pm 0.02, with an intrinsic dispersion of 0.25 dex, similar to that in the bulge. A correlation between metallicity and galactocentric distance is found, in a sense that for the metal-poor RR0 Lyrae stars ([Fe/H] -1.2 dex), this trend is reversed. Using mean magnitudes of MACHO RR Lyrae stars, we searched for the evidence of the Galactic bar, and found marginal evidence of a bar. The absence of a strong bar indicates that the RR Lyrae in the bulge represent a different population than the majority of the bulge stars, which are metal rich and are part of a bar.

Andrea Kunder; Brian Chaboyer

2008-09-09T23:59:59.000Z

469

Independent Signs of Lower Mass-Loss Rates for O-Type Stars  

E-Print Network (OSTI)

I discuss observational evidence -- independent of the direct spectral diagnostics of stellar winds themselves -- suggesting that mass-loss rates for O stars need to be revised downward by roughly a factor of three or more, in line with recent observed mass-loss rates for clumped winds. These independent constraints include the large observed mass-loss rates in LBV eruptions, the large masses of evolved massive stars like LBVs and WNH stars, WR stars in lower metallicity environments, observed rotation rates of massive stars at different metallicity, supernovae that seem to defy expectations of high mass-loss rates in stellar evolution, and other clues. I pay particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too particular attention to the role of feedback that would result from higher mass-loss rates, driving the star to the Eddington limit too soon, and therefore making higher rates appear highly implausible. Some of these arguments by themselves may have more than one interpretation, but together they paint a consistent picture that steady line-driven winds of O-type stars have lower mass-loss rates and are significantly clumped.

Nathan Smith

2007-10-18T23:59:59.000Z

470

Laboratory Computing Resource Center  

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

Computing DOE Logo Computing DOE Logo Search BIO ... Search Argonne Home > BIO home > Laboratory Computing Resource Center BIO Home Page About BIO News Releases Research Publications People Contact Us Organization Chart Site Index Inside BIO BIO Safety About Argonne Argonne National Laboratory Logo Laboratory Computing Resource Center In 2002 Argonne National Laboratory established the Laboratory Computing Project to enable and promote the use of high-performance computing (HPC) across the Laboratory in support of its varied research missions. The Laboratory Computing Resource Center (LCRC) was established, and in April 2003 LCRC began full operations with ArgonneÂ’s first teraflops computing cluster, Jazz. In 2010 Jazz was replaced by Fusion, with a peak performance of 30 teraflops (and still growing). We just acquired Blues which will a performance of 100 teraflops.

471

Alternative Fuels Data Center  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Carolina Incentives and Laws Carolina Incentives and Laws The following is a list of expired, repealed, and archived incentives, laws, regulations, funding opportunities, or other initiatives related to alternative fuels and vehicles, advanced technologies, or air quality. Biofuels Commercialization Grants Archived: 10/01/2013 The Biofuels Center of North Carolina (Center) is a private, nonprofit corporation the Legislature funds to implement the goal that by 2017, 10% of liquid fuels sold in North Carolina will come from biofuels grown and produced within the state. The Center awards funds to academic institutions, economic development organizations, nonprofit corporations, and other entities through an annual competitive awards process. Grants and contracts are designed to identify and bridge gaps in knowledge and

472

Lied Transplant Center  

Science Conference Proceedings (OSTI)

The Department of Energy has prepared an Environmental Assessment (DOE/EA-1143) evaluating the construction, equipping and operation of the proposed Lied Transplant Center at the University of Nebraska Medical Center in Omaha, Nebraska. Based on the analysis in the EA, the DOE has determined that the proposed action does not constitute a major federal action significantly affecting the quality of the human environment within the meaning of the National Environmental Policy Act of 1969 (NEPA). Therefore, the preparation of an Environmental Statement in not required.

NONE

1996-02-01T23:59:59.000Z

473

ENERGY STAR SNAPSHOT - Spring 2009  

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

Measuring Progress in the Measuring Progress in the Commercial and Industrial Sectors Fall 2009 Summary By mid-year 2009, key commercial and industrial organizations have already surpassed their 2008 efforts to improve energy performance and reduce greenhouse gas emissions: * More buildings have been rated at mid year 2009 than in all of last year. This brings the total number of buildings with energy performance ratings to more than 97,000. * Nearly 1,850 buildings have earned the ENERGY STAR in 2009, ahead of the 2008 mid-year total. * Almost 30 organizations, mostly among our nation's public school districts, have already achieved significant portfolio-wide energy improvements or top performance. The ENERGY STAR Snapshot provides an at-a-glance summary of the key performance indicators behind

474

Magnetization of neutron star matter  

E-Print Network (OSTI)

The magnetization of neutron star matter in magnetic fields is studied by employing the FSUGold interaction. It is found that the magnetic susceptibilities of the charged particles (proton, electron and muon) can be larger than that of neutron. The effects of the anomalous magnetic moments (AMM) of each component on the magnetic susceptibility are examined in detail. It is found that the proton and electron AMM affect their respective magnetic susceptibility evidently in strong magnetic fields. In addition, they are the protons instead of the electrons that contribute most significantly to the magnetization of the neutron star matter in a relative weak magnetic field, and the induced magnetic field due to the magnetization can be appear to be very large. Finally, the effect of the density-dependent symmetry energy on the magnetization is discussed.

Dong, Jianmin; Gu, Jianzhong

2013-01-01T23:59:59.000Z

475

Find ENERGY STAR certified buildings and plants | ENERGY STAR Buildings &  

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

» Buildings & Plants » Buildings & Plants » About us » Find ENERGY STAR certified buildings and plants Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training In this section How can we help you? Find out who's partnered with ENERGY STAR Become an ENERGY STAR partner Find ENERGY STAR certified buildings and plants Registry of ENERGY STAR certified buildings and plants

476

Implementing the Data Center Energy Productivity Metric  

SciTech Connect

As data centers proliferate in both size and number, their energy efficiency is becoming increasingly important. We discuss the properties of a number of the proposed metrics of energy efficiency and productivity. In particular, we focus on the Data Center Energy Productivity (DCeP) metric, which is the ratio of useful work produced by the data center to the energy consumed performing that work. We describe our approach for using DCeP as the principal outcome of a designed experiment using a highly instrumented, high performance computing data center. We found that DCeP was successful in clearly distinguishing between different operational states in the data center, thereby validating its utility as a metric for identifying configurations of hardware and software that would improve (or even maximize) energy productivity. We also discuss some of the challenges and benefits associated with implementing the DCeP metric, and we examine the efficacy of the metric in making comparisons within a data center and among data centers.

Sego, Landon H.; Marquez, Andres; Rawson, Andrew; Cader, Tahir; Fox, Kevin M.; Gustafson, William I.; Mundy, Christopher J.

2012-10-01T23:59:59.000Z

477

Home Performance with Energy Star  

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

- HPwES - HPwES Home Performance with ENERGY STAR Ely Jacobsohn U.S. Department of Energy Ely.jacobsohn@ee.doe.gov, 202-287-1333 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose and Objectives: Problem Statement Works to advance the Department's and Administration's energy-related goals in the residential sector Face challenging and often conflicting mandates to save energy, meet environmental goals, and satisfy needs of

478

PNNL Electricity Infrastructure Operations Center | Open Energy...  

Open Energy Info (EERE)

Electricity Infrastructure Operations Center Jump to: navigation, search Logo: Electricity Infrastructure Operations Center Name Electricity Infrastructure Operations Center...

479

BioEnergy Science Center Media Room  

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

Bioenergy Research Centers DOE Bioenergy Research Centers Great Lakes Bioenergy Research Center (GLBRC) Joint BioEnergy Institute (JBEI)...

480

Energy Efficient Data Centers  

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

Federal Utility Partnership Working Group Will Lintner November 28, 2007 San Diego, CA Why Data Centers? * Data centers are highly energy intensive and growing at a rapid rate - Consume 10 to 100 times more energy per square foot than typical office building * Data centers consumed about 45 billion kWh in 2005 and 61 billion kWh in 2006 - This accounts for nearly 1.2% and 1.5% of all U.S. electricity respectively * At current rate, power requirements for data centers could double in 5 years 2 Opportunity Potential Comparison of Projected Electricity Use - All Scenarios 2007 to 2011 140 2006 Baseline 58.7 Annual Energy Use (Billion kWh/year) 120 100 80 60 40 20 B u s i n e s s a s u s u a l C u r r e n t t r e n d s I m p r o v e d o p e r a t i o n a l m a n a g e m e n t Best practice S ta te o f th e a rt 0 2007 2008 2009 2010 2011

Note: This page contains sample records for the topic "difference star center" 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
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481

INTERMOUNTAIN INDUSTRIAL ASSESSMENT CENTER  

SciTech Connect

The U. S. Department of Energy’s Intermountain Industrial Assessment Center (IIAC) at the University of Utah has been providing eligible small- and medium-sized manufacturers with no-cost plant assessments since 2001, offering cost-effective recommendations for improvements in the areas of energy efficiency, pollution prevention, and productivity improvement.

MELINDA KRAHENBUHL

2010-05-28T23:59:59.000Z

482

ENERGY CENTER OF WISCONSIN  

E-Print Network (OSTI)

of electrical energy (hydro, solar and wind), using thermal energy more realistically assesses the true nature for wind-energy systems that experience rapid changes in energy output. While based on gasENERGY CENTER OF WISCONSIN Report Summary 210-1 Life-Cycle Energy Costs and Greenhouse Gas

483

Carolinas Energy Career Center  

SciTech Connect

Central Piedmont Community College (CPCC), located in Charlotte, North Carolina, established the Carolinas Energy Career Center (Center) - a comprehensive training entity to meet the dynamic needs of the Charlotte region's energy workforce. The Center provides training for high-demand careers in both conventional energy (fossil) and renewable energy (nuclear and solar technologies/energy efficiency). CPCC completed four tasks that will position the Center as a leading resource for energy career training in the Southeast: • Development and Pilot of a New Advanced Welding Curriculum, • Program Enhancement of Non-Destructive Examination (NDE) Technology, • Student Support through implementation of a model targeted toward Energy and STEM Careers to support student learning, • Project Management and Reporting. As a result of DOE funding support, CPCC achieved the following outcomes: • Increased capacity to serve and train students in emerging energy industry careers; • Developed new courses and curricula to support emerging energy industry careers; • Established new training/laboratory resources; • Generated a pool of highly qualified, technically skilled workers to support the growing energy industry sector.

Classens, Anver; Hooper, Dick; Johnson, Bruce

2013-03-31T23:59:59.000Z

484

NIST Atomic Spectroscopy Data Center  

Science Conference Proceedings (OSTI)

Atomic Spectroscopy Data Center. ... Responds to user requests for data, literature references, and technical information. ...

2011-11-29T23:59:59.000Z

485

NNSA Service Center Chart | Department of Energy  

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

NNSA Service Center Chart NNSA Service Center Chart Office of Chief Counsel at the NNSA Service Center in Albuquerque, NM NNSA Service Center Chart More Documents & Publications...

486

Energy Frontier Research Centers | ORNL  

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

Materials Synthesis from Atoms to Systems Materials Synthesis from Atoms to Systems Materials Characterization Materials Theory and Simulation Energy Frontier Research Centers Center for Defect Physics in Structural Materials Fluid Interface Reactions, Structure and Transport Advanced Materials Home | Science & Discovery | Advanced Materials | Research Areas | Energy Frontier Research Centers SHARE Energy Frontier Research Centers Advanced Materials research at ORNL is home to two Department of Energy-Office of Basic Energy Sciences' Energy Frontier Research Centers, the Fluid Interface Reaction, Structure, and Transport Center (FIRST), which focuses on understanding interfacial processes critical to electrical energy storage and catalysis, and the Center for Defect Physics, (CDP)

487

Alternative Fuels Data Center: Publications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Publications Publications Printable Version Share this resource Send a link to Alternative Fuels Data Center: Publications to someone by E-mail Share Alternative Fuels Data Center: Publications on Facebook Tweet about Alternative Fuels Data Center: Publications on Twitter Bookmark Alternative Fuels Data Center: Publications on Google Bookmark Alternative Fuels Data Center: Publications on Delicious Rank Alternative Fuels Data Center: Publications on Digg Find More places to share Alternative Fuels Data Center: Publications on AddThis.com... Publications Find publications about alternative transportation, including alternative fuels, advanced vehicles, and regulated fleets. Keyword Category Search more search options close × Filter by Document Category Books & Chapters Brochures & Fact Sheets Conference Papers & Proceedings

488

Alternative Fuels Data Center: Newsletters  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Publications » Newsletters Publications » Newsletters Printable Version Share this resource Send a link to Alternative Fuels Data Center: Newsletters to someone by E-mail Share Alternative Fuels Data Center: Newsletters on Facebook Tweet about Alternative Fuels Data Center: Newsletters on Twitter Bookmark Alternative Fuels Data Center: Newsletters on Google Bookmark Alternative Fuels Data Center: Newsletters on Delicious Rank Alternative Fuels Data Center: Newsletters on Digg Find More places to share Alternative Fuels Data Center: Newsletters on AddThis.com... Newsletters Read these government and industry newsletters to stay current with developments in alternative transportation technologies, including alternative fuels, advanced vehicles, and regulated fleets. Government Newsletters

489

Alternative Fuels Data Center: Publications  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Publications Publications Printable Version Share this resource Send a link to Alternative Fuels Data Center: Publications to someone by E-mail Share Alternative Fuels Data Center: Publications on Facebook Tweet about Alternative Fuels Data Center: Publications on Twitter Bookmark Alternative Fuels Data Center: Publications on Google Bookmark Alternative Fuels Data Center: Publications on Delicious Rank Alternative Fuels Data Center: Publications on Digg Find More places to share Alternative Fuels Data Center: Publications on AddThis.com... Publications Find publications about alternative transportation, including alternative fuels, advanced vehicles, and regulated fleets. Keyword Category alternative fuel price report Search more search options close × Filter by Document Category

490

The University of Texas at Austiny of Texas at Austiny of T CenterCenterCenterCenterCenterCenterCenter for  

E-Print Network (OSTI)

The University of Texas at Austiny of Texas at Austiny of T Center OF TEXAS AT AUSTIN Project Summary Report 1849-S ­ 1 ­ Project 0-1849 Airport Access: Intermodal Strategies a study for the Texas Department ofTransportation (TxDOT) to examine short- term and long-term strategies

Texas at Austin, University of

491

A cool disk in the Galactic Center?  

E-Print Network (OSTI)

We study the possibility of a cool disk existing in the Galactic Center in the framework of the disk-corona evaporation/condensation model. Assuming an inactive disk, a hot corona should form above the disk since there is a continuous supply of hot gas from stellar winds of the close-by massive stars. Whether the cool disk can survive depends on the mass exchange between the disk and corona. If the disk-corona interaction is dominated by evaporation and the rate is larger than the Bondi accretion rate in the Galactic Center, the disk will be depleted within a certain time period and no persistent disk will exist. On the other hand, if the interaction results in hot gas steadily condensing into the disk, an inactive cool disk might survive. For this case we further investigate the Bremsstrahlung radiation from the hot corona and compare it with the observed X-ray luminosity. Our model shows that, for standard viscosity in the corona (alpha=0.3), the mass evaporation rate is much higher than the Bondi accretion rate and the coronal density is much larger than that inferred from Chandra observations. An inactive disk can not survive such strong evaporation. For small viscosity (alphanature.

B. F. Liu; F. Meyer; E. Meyer-Hofmeister

2004-03-18T23:59:59.000Z

492

Making Galaxies: One Star at a Time  

DOE Green Energy (OSTI)

In the age of precision cosmology the fundamental parameters of our world model are being measured to unprecedented accuracy. In particular, measurements of the cosmic microwave background radiation detail the state of the universe only 400,000 years after the big bang. Unfortunately, we have no direct observational evidence about the following few hundred million years, the so called dark ages. However, we do know from the composition of the highest redshift galaxies that it is there where the earliest and first galaxies are being formed. From a physics point of view these earliest times are much easier to understand and model because the chemical composition of the early gas is simpler and the first galaxies are much smaller than the ones found nearby. The absence of strong magnetic fields, cosmic rays, dust grains and UV radiation fields clearly also helps. The first generation of structure formation is as such a problem extremely well suited for direct ab initio calculations using supercomputers. In this colloquium I will discuss the rich physics of the formation of the first objects as computed via ab initio Eulerian cosmological adaptive mesh refinement calculations. We find the first generation of stars to be massive and to form in isolation with mass between 30 and 300 times the mass of the sun. Remarkably the relevant mass scales can all be understood analytically from the microscopic properties of atomic and molecular hydrogen. The UV radiation from these stars photo-evaporates their parent clouds within their lifetimes contributing significantly to cosmological reionization. Their supernovae distribute the first heavy elements over thousands of light years and enrich the intergalactic medium. As we are beginning to illuminate these earliest phases of galaxy formation many new questions arise and become addressable with our novel numerical techniques. How and where are the earliest magnetic fields made? How do the first super-massive black holes form? When and how can the first planets form in the universe? Algorithmic breakthroughs and large supercomputers enable these studies. Hence I will close with discussing how the expanding computing infrastructure at SLAC and scientific visualization at the Schwob Computing and Information Center at the Fred Kavli building allow us to find answers to the fundamental questions about the beginning of structure in the universe.

Abel, Tom

2006-09-18T23:59:59.000Z

493

Medtronic - MECC: Award Recipient of the ENERGY STAR Challenge for Industry  

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

Award Recipient of the ENERGY STAR Challenge for Industry Award Recipient of the ENERGY STAR Challenge for Industry Medtronic - MECC 6700 Shingle Creek Pkwy Brooklyn Center, MN 55430 The Medtronic-MECC facility is part of the Cardiac Rhythm and Disease Management division and specializes in the manufacturing of batteries, capacitors and other electrical components. The site also produces a variety of other components for other divisions within the Corporation. Medtronic-MECC achieved the ENERGY STAR Challenge for Industry in 2009. This plant reached 10% reduction in energy intensity in one year of its baseline. The site achieved the Challenge through fine tuning and scheduling of HVAC units and adjusting set points in manufacturing areas. Another achievement was absorbing additional manufacturing capacity within existing operations. Overall,

494

Viewing the Evolution of Massive Star Formation through FIR/Sub-mm/mm Eyes  

E-Print Network (OSTI)

In this paper, we present an overview of our method of constructing a family of models for the far-infrared, sub-millimeter, and millimeter (FIR/sub-mm/mm) line emission of molecular and atomic gas surrounding massive star formation in starburst galaxies. We show the results of a case study, an expanding supershell centered around a massive star cluster with a particular set of input parameters and its application to nearby starburst galaxy M 82. This set of models can be used not only to interpret the observations of FIR/sub-mm/mm line emission from molecular and atomic gas, but also to investigate the physical environment and the initial cloud conditions in massive star forming regions as well as the ages of the starbursts through simulations for a wide range of input parameters. Finally, we discuss limitations of our models, and outline future work.

Lihong Yao; E. R. Seaquist

2006-05-25T23:59:59.000Z

495

The star formation histories of low surface brightness galaxies  

E-Print Network (OSTI)

We have performed deep imaging of a diverse sample of 26 low surface brightness galaxies (LSBGs) in the optical and the near-infrared. Using stellar population synthesis models, we find that it is possible to place constraints on the ratio of young to old stars (which we parameterise in terms of the average age of the galaxy), as well as the metallicity of the galaxy, using optical and near-infrared colours. LSBGs have a wide range of morphologies and stellar populations, ranging from older, high metallicity earlier types to much younger and lower metallicity late type galaxies. Despite this wide range of star formation histories, we find that colour gradients are common in LSBGs. These are most naturally interpreted as gradients in mean stellar age, with the outer regions of LSBGs having younger ages than their inner regions. In an attempt to understand what drives the differences in LSBG stellar populations, we compare LSBG average ages and metallicities with their physical parameters. Strong correlations are seen between a LSBG's star formation history and its K band surface brightness, K band absolute magnitude and gas fraction. These correlations are consistent with a scenario in which the star formation history of a LSBG primarily correlates with its surface density and its metallicity correlates both with its mass and surface density.

Eric F. Bell; David Barnaby; Richard G. Bower; Roelof S. de Jong; Doyal A. Harper; Mark Hereld; Robert F. Loewenstein; Bernard J. Rauscher

1999-09-23T23:59:59.000Z

496

Refractive aiming corrections for satellite observation of stars  

SciTech Connect

Standard references describe how apparent zenith angles differ from true zenith angles for observers on the Earth. In fact, correction formulae are available for aiming Earth-based sensors at stars; some corrections give variations as a function of observer altitude. Such corrections have not been available for observers in space. This report develops formulae appropriate for proper aiming from space-based sensors toward the relatively few stars that are near the Earth`s limb at any given time. These formulae correct for refractive effects and may be critical for steerable space-borne sensors with fields of view less than one degree, tasked to observe starlight passing near the Earth`s surface. Ray tracing in the U.S. Standard Atmosphere, 1976 including H{sub 2}O effects, is used to determine relations between the refracted tangent height, the apparent tangent height resulting from observation at the sensor, and the angle through which the detected rays have deviated. Analytic fits of the ray deviation as a function of apparent tangent height allows quick determination of corrections needed for a space-borne sensor. Using those results that apply in the plane of incidence and using the necessary coordinate rotations, alterations in the star`s apparent right ascension and declination are evaluated to improve the aim. Examples illustrate that alterations can be larger than one degree, with effects lasting up to a few minutes.

Vittitoe, C.N.; Schmidt, R.L.

1997-03-01T23:59:59.000Z

497

From Gas to Stars Over Cosmic Time  

E-Print Network (OSTI)

From the time the first stars formed over 13 billion years ago to the present, star formation has had an unexpectedly dynamic history. At first, the star formation rate density increased dramatically, reaching a peak 10 billion years ago more than ten times the present day value. Observations of the initial rise in star formation remain difficult, poorly constraining it. Theoretical modeling has trouble predicting this history because of the difficulty in following the feedback of energy from stellar radiation and supernova explosions into the gas from which further stars form. Observations from the ground and space with the next generation of instruments should reveal the full history of star formation in the universe, while simulations appear poised to accurately predict the observed history.

Mac Low, Mordecai-Mark

2013-01-01T23:59:59.000Z