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1

Energy All-Stars Shine Bright at Inaugural Lecture Series | Department of  

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

All-Stars Shine Bright at Inaugural Lecture Series All-Stars Shine Bright at Inaugural Lecture Series Energy All-Stars Shine Bright at Inaugural Lecture Series January 22, 2013 - 3:38pm Addthis Energy Secretary Steven Chu talks about the challenges and opportunities relating to energy issues in the coming years as he opens the Energy All-Stars event. Jennifer Granholm, former governor of Michigan, proposes a Race to the Top-style program for clean energy during Energy All-Stars. Los Angeles Mayor Antonio Villaraigosa speaks about how his city is moving towards a cleaner, more energy-efficient future during Energy All-Stars. Michael Liebreich, CEO of Bloomberg New Energy Finance, talks about the promise of the clean energy economy during Energy All-Stars. Doyle Beneby, President and Chief Executive Officer of CPS Energy, speaks

2

Energy All-Stars Shine Bright at Inaugural Lecture Series | Department of  

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

Energy All-Stars Shine Bright at Inaugural Lecture Series Energy All-Stars Shine Bright at Inaugural Lecture Series Energy All-Stars Shine Bright at Inaugural Lecture Series January 22, 2013 - 3:38pm Addthis Energy Secretary Steven Chu talks about the challenges and opportunities relating to energy issues in the coming years as he opens the Energy All-Stars event. Jennifer Granholm, former governor of Michigan, proposes a Race to the Top-style program for clean energy during Energy All-Stars. Los Angeles Mayor Antonio Villaraigosa speaks about how his city is moving towards a cleaner, more energy-efficient future during Energy All-Stars. Michael Liebreich, CEO of Bloomberg New Energy Finance, talks about the promise of the clean energy economy during Energy All-Stars. Doyle Beneby, President and Chief Executive Officer of CPS Energy, speaks

3

New OLED Lighting Systems Shine Bright, Save Energy  

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

Universal Display Corporation Universal Display Corporation (UDC) (Ewing, NJ), founded in 1994, provides OLED innovations and helps commercialize new generations of OLED products through technology licensing, UniversalPHOLED® materials sales, technology development, and technology transfer services. UDC is a world leader in the development of innovative OLED technology for use in flat panel displays, lighting, and organic electronics. It holds one of the largest patent portfolios in the OLED field. www.universaldisplay.com New OLED Lighting Systems Shine Bright, Save Energy Challenge Lighting consumes over 22% of the total electricity produced in the U.S. and, according to industry estimates, accounts for over $200 billion per year in electric bills worldwide. A majority of this energy consumption

4

Bill Nye (Energy All Stars Presentation)  

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

Bill Nye the Science Guy delivered this presentation on space and the lessons about climate change that can be gleaned from the other planets in our solar system at the Energy All Stars event on...

5

Mayor Antonio Villaraigosa (Energy All Stars Presentation)  

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

Los Angeles Mayor Antonio Villaraigosa delivered this presentation touting the energy efficiency and renewable energy related accomplishments of his city at the Energy All Stars event on January 19...

6

Sue Tierney (Energy All Stars Presentation)  

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

Sue Tierney delivered this presentation" The Future of Energy: Toward the 21st Century Energy System We Need (With an Eye on the Rear View Mirror)" at the Energy All Stars event on January 19, 2013...

7

Jennifer Granholm (Energy All Stars Presentation)  

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

Former Michigan Governor Jennifer Granholm delivered this presentation advocating for an energy Race to the Top competition between the states at the Energy All Stars event on January 19, 2013, at...

8

Michael Liebreich (Energy All Stars Presentation)  

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

Michael Liebreich, CEO of Bloomberg New Energy Finance, delivered this presentation on the energy economy at the Energy All Stars event on January 19, 2013, at the US Department of Energy in...

9

Doyle Beneby (Energy All Stars Presentation) | Department of...  

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

Energy CEO Doyle Beneby delivered this presentation focusing on the importance of public-private partnerships to the energy economy at the Energy All Stars event on January 19,...

10

Results from NA61/SHINE  

E-Print Network (OSTI)

In this paper we summarize recent results from NA61/SHINE relevant for heavy ion physics, neutrino oscillations and the interpretation of air showers induced by ultra-high energy cosmic rays.

Unger, M

2013-01-01T23:59:59.000Z

11

New OLED Lighting Systems Shine Bright, Save Energy  

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

Case study that describes how Universal Display Corporation received SBIR funding to adapt its PHOLED lighting technology for high-end commercial and institutional building applications.

12

SHINE VACUUM PUMP TEST VERIFICATION  

Science Conference Proceedings (OSTI)

Normetex pumps used world-wide for tritium service are no longer available. DOE and other researchers worldwide have spent significant funds characterizing this pump. Identification of alternate pumps is required for performance and compatibility with tritium gas. Many of the pumps that could be used to meet the functional performance requirements (e.g. pressure and flow conditions) of the Normetex pump have features that include the use of polymers or oils and greases that are not directly compatible with tritium service. This study assembles a test system to determine the flow characteristics for candidate alternate pumps. These tests are critical to the movement of tritium through the SHINE Tritium Purification System (TPS). The purpose of the pump testing is two-fold: (1) obtain baseline vacuum pump characteristics for an alternate (i.e. ?Normetex replacement?) pump intended for use in tritium service; and (2) verify that low pressure hydrogen gas can be transported over distances up to 300 feet by the candidate pumps. Flow rates and nominal system pressures have been identified for the SHINE Mo-99 production process Tritium Purification System (TPS). To minimize the line sizes for the transfer of low pressure tritium from the Neutron Driver Accelerator System (NDAS) to the primary processing systems in the TPS, a ?booster? pump has been located near the accelerator in the design. A series of pump tests were performed at various configurations using hydrogen gas (no tritium) to ensure that this concept is practical and maintains adequate flow rates and required pressures. This report summarizes the results of the tests that have been performed using various pump configurations. The current design of the Tritium Purification System requires the ?booster? pump to discharge to or to be backed by another vacuum pump. Since Normetex pumps are no longer manufactured, a commercially available Edwards scroll pump will be used to back the booster pump. In this case the ?booster pump? is an Adixen Molecular Drag Pump (MDP 5011) and the backing pump is an Edwards (nXDS15iC) scroll pump. Various configurations of the two pumps and associated lengths of ? inch tubing (0 feet to 300 feet) were used in combination with hydrogen and nitrogen flow rates ranging from 25-400 standard cubic centimeters per minute (sccm) to determine whether the proposed pump configuration meets the design criteria for SHINE. The results of this study indicate that even under the most severe conditions (300 feet of tubing and 400 sccm flow rate) the Adixen 5011 MDP can serve as a booster pump to transport gases from the accelerator (NDAS) to the TPS. The Target Gas Receiving System pump (Edwards nXDS15iC) located approximately 300 feet from the accelerator can effectively back the Adixen MDP. The molecular drag pump was able to maintain its full rotational speed even when the flow rate was 400 sccm hydrogen or nitrogen and 300 feet of tubing was installed between the drag pump and the Edwards scroll pump. In addition to maintaining adequate rotation, the pressure in the system was maintained below the target pressure of 30 torr for all flow rates, lengths of tubing, and process gases. This configuration is therefore adequate to meet the SHINE design requirements in terms of flow and pressure.

Morgan, G.; Peters, B.

2013-09-30T23:59:59.000Z

13

Sun Shine Solar | Open Energy Information  

Open Energy Info (EERE)

Shine Solar Shine Solar Jump to: navigation, search Logo: Sun Shine Solar Name Sun Shine Solar Place Norwich, United Kingdom Sector Solar Product Solar energy products Phone number 01508 488188 Website http://www.sunshinesolar.co.uk Coordinates 52.6281014°, 1.2993494° 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":52.6281014,"lon":1.2993494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

14

STEM Women All-Stars Hit the Road | Department of Energy  

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

STEM Women All-Stars Hit the Road STEM Women All-Stars Hit the Road STEM Women All-Stars Hit the Road April 30, 2012 - 4:32pm Addthis Karina Edmonds, Technology Transfer Coordinator for the Department of Energy, meets with girls from the University of San Francisco Upward Bound Math and Science Program. (Photo courtesy of USF Upward Bound Math and Science Program) Karina Edmonds, Technology Transfer Coordinator for the Department of Energy, meets with girls from the University of San Francisco Upward Bound Math and Science Program. (Photo courtesy of USF Upward Bound Math and Science Program) Lauren Andersen Policy Advisor at White House Office of Science and Technology Policy What are the key facts? Watch the White House Girls in STEM video Read about the Energy Department's Women in STEM Tweet Up

15

STEM Women All-Stars Hit the Road | Department of Energy  

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

STEM Women All-Stars Hit the Road STEM Women All-Stars Hit the Road STEM Women All-Stars Hit the Road April 30, 2012 - 4:32pm Addthis Karina Edmonds, Technology Transfer Coordinator for the Department of Energy, meets with girls from the University of San Francisco Upward Bound Math and Science Program. (Photo courtesy of USF Upward Bound Math and Science Program) Karina Edmonds, Technology Transfer Coordinator for the Department of Energy, meets with girls from the University of San Francisco Upward Bound Math and Science Program. (Photo courtesy of USF Upward Bound Math and Science Program) Lauren Andersen Policy Advisor at White House Office of Science and Technology Policy What are the key facts? Watch the White House Girls in STEM video Read about the Energy Department's Women in STEM Tweet Up

16

Letting The Sun Shine On Solar Costs: An Empirical Investigation Of Photovoltaic Cost Trends In California  

E-Print Network (OSTI)

LETTING THE SUN SHINE ON SOLAR COSTS: AN EMPIRICALLetting the Sun Shine on Solar Costs: An Empirical

Wiser, Ryan; Bolinger, Mark; Cappers, Peter; Margolis, Robert

2006-01-01T23:59:59.000Z

17

SunShine Café: A Breakfast Restaurant Business Plan.  

E-Print Network (OSTI)

??Purpose: The purpose of this paper is to create a business plan for the SunShine Café. While the commonly known statistic of 90% of restaurants… (more)

Burrow, Lillian I.

2011-01-01T23:59:59.000Z

18

A Shining Example of Dr. King's legacy | Department of Energy  

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

A Shining Example of Dr. King's legacy A Shining Example of Dr. King's legacy A Shining Example of Dr. King's legacy January 9, 2013 - 11:27am Addthis A Shining Example of Dr. King’s legacy Kathy Chambers Senior Science and Technical Information Specialist, OSTI Editor's Note: This blog was originally posted on OSTI's blog. As America celebrates Martin Luther King's birthday and focuses on how far this nation has come for all people, the Energy Department's .EDUconnections is pleased to honor Delaware State University (DSU). DSU is a shining example of Dr. King's extraordinary legacy of progress and education. Founded in 1891, DSU became one of the country's first land-grant educational institutions and is now a Historically Black College and University. DSU has a proud heritage of research, and today focuses on

19

1366 Technologies Shines a Light on American Innovation | Department of  

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

366 Technologies Shines a Light on American Innovation 366 Technologies Shines a Light on American Innovation 1366 Technologies Shines a Light on American Innovation December 3, 2010 - 7:09pm Addthis 1366 Technologies Shines a Light on American Innovation John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Earlier this year, we visited 1366 Technologies in North Lexington, Massachusetts to get an inside look at their innovative approach to solar manufacturing and document how a $4 million grant from the Advanced Research Projects Agency-Energy (ARPA-E), through the Recovery Act, was helping to make their ambitious goal of producing "solar at the cost of coal" a reality. A lot has happened since that time, with the company announcing plans to bring its novel wafer manufacturing process into production by 2012, thanks

20

City of Milwaukee - Milwaukee Shines Solar Financing | Department of Energy  

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

Milwaukee - Milwaukee Shines Solar Financing Milwaukee - Milwaukee Shines Solar Financing City of Milwaukee - Milwaukee Shines Solar Financing < Back Eligibility Multi-Family Residential Residential Savings Category Solar Buying & Making Electricity Heating & Cooling Water Heating Maximum Rebate $20,000 Program Info Start Date 07/28/2011 State Wisconsin Program Type Local Loan Program Provider City of Milwaukee Beginning July 28, 2011, the City of Milwaukee will be offering low-interest loans for solar energy under its Milwaukee Shines Solar Financing program. Loans are available to homeowners of 1-3 unit, owner-occupied homes in Milwaukee. Interest rate maximum is prime rate plus 2.5%, and as low as prime plus 1.5%. Loans are limited to $20,000 and 15 years. Eligible equipment includes solar electric systems of up to 6

Note: This page contains sample records for the topic "all-stars shine bright" 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

Status and plans of the NA61/SHINE physics program  

SciTech Connect

One of the NA61/SHINE experiment's goals is to discover the critical point of strongly interacting matter and study the properties of the onset of deconfinement. This is to be achieved by performing a two-dimensional phase diagram (T- Micro-Sign {sub B}) scan-measuring hadron production in collisions of various beam particles and targets at various beam energies. NA61/SHINE also collects data for the T2K experiment, which are just about to be published.

Czopowicz, T., E-mail: Tobiasz.Roman.Czopowicz@cern.ch [Warsaw University of Technology, Faculty of Physics (Poland)

2012-06-15T23:59:59.000Z

22

Time Brightness  

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

Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Perlmutter, et al., in Thermonuclear Supernovae, NATO ASI, v. 486 (1997) Cosmology from . . . Time Brightness ... . . . 50-100 Fields Lunar Calendar Scheduled Follow-Up Imaging at Hubble, Cerro Tololo, WIYN, Isaac Newton Scheduled Follow-Up Spectroscopy at Keck Almost 1000 Galaxies per Field RESULT: ~24 Type Ia supernovae discovered while still brightening, at new moon Berkeley Lab Keck WIYN Cerro Tololo Isaac Newton Hubble Strategy We developed a strategy to guarantee a group of supernova discoveries on a certain date. Just after a new moon, we observe some 50 to 100 high-galactic lattitute fields-each containing almost a thousand high-redshift galaxies-in two nights on the Cerro Tololo 4-meter telescope with Tyson & Bernstein's wide-field camera. We return three weeks later to observe the same

23

Virginia Tech Shines Light on Home Efficiency | Department of Energy  

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

Virginia Tech Shines Light on Home Efficiency Virginia Tech Shines Light on Home Efficiency Virginia Tech Shines Light on Home Efficiency July 9, 2010 - 10:54am Addthis Virginia Tech's solar-powered Lumenhaus was designed for maximum efficiency as well as comfort. | Photo courtesy of Lumenhaus Virginia Tech's solar-powered Lumenhaus was designed for maximum efficiency as well as comfort. | Photo courtesy of Lumenhaus Collegiate teams from around the world came to Madrid this month to present their solar-powered houses in the first biennial Solar Decathlon Europe, a competition modeled after the Energy Department's Solar Decathlon in Washington, D.C. As one of just two teams representing the United States, Virginia Tech earned enough points with its Lumenhaus to win the overall competition. "We competed against high quality teams with significant support from their

24

Crayola's True Color Shines Through: Green | Department of Energy  

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

Crayola's True Color Shines Through: Green Crayola's True Color Shines Through: Green Crayola's True Color Shines Through: Green August 13, 2010 - 10:00am Addthis The Crayola solar farm became fully operational this week. Ten children from around the country, known as the "Crayola Green Team," helped dedicate the newest addition to the Easton, Pa.-plant. Photos courtesy of Crayola. | Photo Courtesy of Crayola The Crayola solar farm became fully operational this week. Ten children from around the country, known as the "Crayola Green Team," helped dedicate the newest addition to the Easton, Pa.-plant. Photos courtesy of Crayola. | Photo Courtesy of Crayola Stephen Graff Former Writer & editor for Energy Empowers, EERE What does this project do? The solar panels produce enough energy to produce 1 billion crayons

25

Solar Decathlon: Rain and Shine | Department of Energy  

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

Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine October 20, 2009 - 7:00am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. For all the bad weather, however, the mood in DC was very upbeat. This was the fourth Solar Decathlon, an event that has seen great strides since its launch in 2002. The mission of the event is to promote solar energy and energy efficiency in buildings, through innovative engineering and scholarly dedication. I would venture to say that this year might mark the event's greatest success, with TWO teams from Canada, as well as returning

26

Los Alamos instrument to shine light on Mars habitability  

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

Instrument to shine light on Mars habitability Instrument to shine light on Mars habitability Los Alamos instrument to shine light on Mars habitability The robust ChemCam system is one of 10 instruments mounted on the mission's rover vehicle, named Curiosity. November 28, 2011 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact

27

Solar Decathlon: Rain and Shine | Department of Energy  

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

Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine Solar Decathlon: Rain and Shine October 20, 2009 - 7:00am Addthis Drew Bittner Web Manager, Office of Energy Efficiency and Renewable Energy Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. For all the bad weather, however, the mood in DC was very upbeat. This was the fourth Solar Decathlon, an event that has seen great strides since its launch in 2002. The mission of the event is to promote solar energy and energy efficiency in buildings, through innovative engineering and scholarly dedication. I would venture to say that this year might mark the event's greatest success, with TWO teams from Canada, as well as returning

28

Shining Light on Catalysis | Stanford Synchrotron Radiation Lightsource  

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

Shining Light on Catalysis Shining Light on Catalysis Tuesday, July 19, 2011 - 4:38pm SSRL Conference Room 137-322 Jeroen A. van Bokhoven, Professor for Heterogeneous Catalysis Institute for Chemical and Bioengineering ETH Zurich Head of Laboratory for Catalysis and Sustainable Chemistry (LSK) Swiss Light Source Paul Scherrer Institute Understanding a functioning catalyst requires understanding at the atomic scales in a time-resolved manner. X-rays can be readily used to accomplish that task, because of the large penetration depth of hard X-rays, in situ or operando experiments are possible. In addition, complementary techniques, such as the vibrational spectroscopies can be simultaneously applied. Recent development in instrumentation to perform quick EXAFS and secondary emission spectroscopy has provided exciting new opportunities to

29

NREL: News Feature - Middle Schoolers Shine in Electric Car Races  

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

Middle Schoolers Shine in Electric Car Races Middle Schoolers Shine in Electric Car Races May 24, 2013 In this photo, a boy grins widely as he holds a yellow folder over his model solar car. In the background are several black neoprene tracks and other middle-school students awaiting the starting signal. An adult race judge holds her hand in the air, signaling that everything is ready for the start of the race. Enlarge image Xavier Urquijo from Summit Ridge Middle School in Littleton waits for the start signal to lift the folder covering the solar panel on his team's car, "Knight Hawk." His team was one of 97 from 28 Colorado middle schools racing solar and lithium-ion powered vehicles they designed and built themselves at NREL's 2013 Junior Solar Sprint and Lithium-Ion Battery car competitions on May 18.

30

EM Waste Isolation Pilot Plant Team's Holiday Spirit Shines | Department  

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

EM Waste Isolation Pilot Plant Team's Holiday Spirit Shines EM Waste Isolation Pilot Plant Team's Holiday Spirit Shines EM Waste Isolation Pilot Plant Team's Holiday Spirit Shines December 23, 2013 - 12:00pm Addthis Aspen Cass, a relative of an EM Carlsbad Field Office (CBFO) employee, holds donated coats with Farok Sharif (left), president and project manager of Nuclear Waste Partnership, the WIPP management and operating contractor, and Joe Franco, manager of CBFO. Aspen Cass, a relative of an EM Carlsbad Field Office (CBFO) employee, holds donated coats with Farok Sharif (left), president and project manager of Nuclear Waste Partnership, the WIPP management and operating contractor, and Joe Franco, manager of CBFO. The clothing drive’s organizers — Margaret Gee (left), Yolanda Navarrete (center) and Dana Dorr — hold up some of the donated coats before providing them to Carlsbad area schools. Gee is with CBFO and Navarrete and Dorr are with Nuclear Waste Partnership (NWP). NWP's Yolanda Salmon, another drive organizer, is not pictured.

31

All-Star Skills Competition Rules -2013 Participant first shoots a layup. After dribbling between three obstacles, the player must throw a pass into a first net (or  

E-Print Network (OSTI)

All-Star Skills Competition Rules - 2013 Participant first shoots a layup. After dribbling between between a second set of three obstacles and complete the challenge with a layup or shot. Touching course with a basketball in their hand. When the ref signals, the player will start with a layup

Tipple, Brett

32

Photo of the Week: Rain or Shine, Preparing for the 2013 Hurricane Season |  

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

Rain or Shine, Preparing for the 2013 Hurricane Rain or Shine, Preparing for the 2013 Hurricane Season Photo of the Week: Rain or Shine, Preparing for the 2013 Hurricane Season May 15, 2013 - 1:16pm Addthis President Barack Obama listens to Acting Energy Secretary Daniel B. Poneman during a meeting with electric utility CEOs and trade association representatives at the Department of Energy in Washington, D.C., May 8, 2013. The group met to discuss lessons learned during the response to Hurricane Sandy, as well as the ongoing preparations for 2013 hurricane season, which begins June 1. | Official White House Photo by Pete Souza. President Barack Obama listens to Acting Energy Secretary Daniel B. Poneman during a meeting with electric utility CEOs and trade association representatives at the Department of Energy in Washington, D.C., May 8,

33

Fewer lights, Brighter Shine in New Hampshire County | Department of Energy  

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

Fewer lights, Brighter Shine in New Hampshire County Fewer lights, Brighter Shine in New Hampshire County Fewer lights, Brighter Shine in New Hampshire County September 20, 2010 - 3:00pm Addthis New sodium lamp lights at Strafford County’s courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County | New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County

34

Shining Energy-saving LEDs on Utah Starry Nights | Department of Energy  

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

Shining Energy-saving LEDs on Utah Starry Nights Shining Energy-saving LEDs on Utah Starry Nights Shining Energy-saving LEDs on Utah Starry Nights June 11, 2010 - 4:27pm Addthis Stephen Graff Former Writer & editor for Energy Empowers, EERE Utah is known for its magnificent night skies, where stargazers can catch a glimpse of constellations or a rogue shooting star. Now some rural towns have found a way to create even better views-and conserve energy. This summer, thanks to an Energy Efficiency and Conservation Block Grant (EECBG) from the Utah State Energy Program worth over $1 million, 14 rural communities across the state are replacing streetlights with efficient light-emitting diodes (LEDs). About 2,500 streetlights will be replaced and could save the towns 20 percent to 50 percent on electricity bills.

35

Fewer lights, Brighter Shine in New Hampshire County | Department of Energy  

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

Fewer lights, Brighter Shine in New Hampshire County Fewer lights, Brighter Shine in New Hampshire County Fewer lights, Brighter Shine in New Hampshire County September 20, 2010 - 3:00pm Addthis New sodium lamp lights at Strafford County’s courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County | New sodium lamp lights at Strafford County's courthouse parking lot are expected to save the county $6,000 on energy bills annually. | Photo courtesy of Strafford County

36

Shining Energy-saving LEDs on Utah Starry Nights | Department of Energy  

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

Shining Energy-saving LEDs on Utah Starry Nights Shining Energy-saving LEDs on Utah Starry Nights Shining Energy-saving LEDs on Utah Starry Nights June 11, 2010 - 4:27pm Addthis Stephen Graff Former Writer & editor for Energy Empowers, EERE Utah is known for its magnificent night skies, where stargazers can catch a glimpse of constellations or a rogue shooting star. Now some rural towns have found a way to create even better views-and conserve energy. This summer, thanks to an Energy Efficiency and Conservation Block Grant (EECBG) from the Utah State Energy Program worth over $1 million, 14 rural communities across the state are replacing streetlights with efficient light-emitting diodes (LEDs). About 2,500 streetlights will be replaced and could save the towns 20 percent to 50 percent on electricity bills.

37

Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch |  

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

Cells Shine a Light on the Last Endeavour Space Shuttle Launch Cells Shine a Light on the Last Endeavour Space Shuttle Launch Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch May 16, 2011 - 9:35am Addthis Sunita Satyapal Program Manager, Hydrogen & Fuel Cell Technology Program What does this mean for me? A new hydrogen fuel cell-powered mobile light tower that has the potential to drastically reduce dependence on diesel-fueled mobile lighting across the United States. They are cleaner and quieter than diesel mobile light towers used today. Energy Department-funded research has helped to reduce the cost of fuel cells by 30% since 2008 and 80% since 2002. This has enabled increased widespread adoption and enabled commercial developments for fuel cell applications. Fuel cell technology will help light the way as the Space Shuttle

38

Light Shines on Better Budget for Glendale, Arizona | Department of Energy  

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

Light Shines on Better Budget for Glendale, Arizona Light Shines on Better Budget for Glendale, Arizona Light Shines on Better Budget for Glendale, Arizona July 20, 2010 - 10:00am Addthis A LED light bulb is installed in one of Glendale, Ariz.'s traffic signals. | Photo courtesy of Glendale A LED light bulb is installed in one of Glendale, Ariz.'s traffic signals. | Photo courtesy of Glendale Glendale, Ariz., like many other cities, was facing several problems: a tight budget and aging buildings using outdated lighting - making repairs difficult and expensive. The city installed energy-efficient LED lights in 190 signalized street intersections, at racquet ball and tennis courts at 11 city parks and in the Glendale Main Library. Glendale used part of its $2.3 million Energy Efficiency and Conservation Block Grant (EECBG) - funded by the American

39

Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch |  

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

Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch May 16, 2011 - 9:35am Addthis Sunita Satyapal Program Manager, Hydrogen & Fuel Cell Technology Program What does this mean for me? A new hydrogen fuel cell-powered mobile light tower that has the potential to drastically reduce dependence on diesel-fueled mobile lighting across the United States. They are cleaner and quieter than diesel mobile light towers used today. Energy Department-funded research has helped to reduce the cost of fuel cells by 30% since 2008 and 80% since 2002. This has enabled increased widespread adoption and enabled commercial developments for fuel cell applications. Fuel cell technology will help light the way as the Space Shuttle

40

High brightness electron accelerator  

DOE Patents (OSTI)

A compact high brightness linear accelerator is provided for use, e.g., in a free electron laser. The accelerator has a first plurality of acclerating cavities having end walls with four coupling slots for accelerating electrons to high velocities in the absence of quadrupole fields. A second plurality of cavities receives the high velocity electrons for further acceleration, where each of the second cavities has end walls with two coupling slots for acceleration in the absence of dipole fields. The accelerator also includes a first cavity with an extended length to provide for phase matching the electron beam along the accelerating cavities. A solenoid is provided about the photocathode that emits the electrons, where the solenoid is configured to provide a substantially uniform magnetic field over the photocathode surface to minimize emittance of the electrons as the electrons enter the first cavity.

Sheffield, R.L.; Carlsten, B.E.; Young, L.M.

1992-12-31T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

Neutral beam shine-through power and its dependence on the line density of the DIII-D plasma  

SciTech Connect

Neutral beams are the primary source of auxiliary plasma heating in the DIII-D Tokamak. Part of the beam power passes through the plasma and is deposited on the wall of the tokamak (shine-through power) and does not contribute to plasma heating. It is therefore crucial to know the shine-through power in order to give an accurate account of the total power deposited in the plasma. The authors have recently remeasured the shine-through power using data taken from thermocouples embedded in the beam target tiles of the tokamak vessel. The tile temperature rise was correlated to the injected beam power. A dependence of the tile temperature rise don the initial tile temperature has been empirically measured and accounted for in order to obtain a more accurate determination of the shine-through beam power. Measurements of the shine-through beam power as a function of plasma density and beam energy confirm that shine-through power decreases exponentially with plasma density, and increases linearly with beam energy.

Riggs, S.; Hong, R.; Kessler, D.

1995-10-01T23:59:59.000Z

42

High-energy X-rays shine light on mystery of Picasso's paints | Argonne  

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

energy X-rays shine light on mystery of Picasso's paints energy X-rays shine light on mystery of Picasso's paints By Tona Kunz * February 6, 2013 Tweet EmailPrint LEMONT, Ill. - The Art Institute of Chicago teamed up with Argonne National Laboratory to help unravel a decades-long debate among art scholars about what kind of paint Picasso used to create his masterpieces. The results published last month in the journal Applied Physics A: Materials Science & Processing add significant weight to the widely held theory that Picasso was one of the first master painters to use common house paint rather than traditional artists' paint. That switch in painting material gave birth to a new style of art marked by canvasses covered in glossy images with marbling, muted edges, and occasional errant paint drips, but devoid of brush marks. Fast-drying enamel house paint enabled

43

Bright Ideas and Better Detectors  

Office of Science (SC) Website

& Testimony Recovery Act Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 11.06.13 Bright...

44

BrightSource Energy | Open Energy Information  

Open Energy Info (EERE)

BrightSource Energy Jump to: navigation, search Name BrightSource Energy Place Oakland, California Zip 94612 Sector Solar Product California-based company that develops, builds,...

45

Resonant laser power build-up in ALPS -- a "light-shining-through-walls" experiment  

E-Print Network (OSTI)

The ALPS collaboration runs a light-shining-through-walls (LSW) experiment to search for photon oscillations into "weakly interacting sub-eV particles" (WISPs) inside of a superconducting HERA dipole magnet at the site of DESY. In this paper we report on the first successful integration of a large-scale optical cavity to boost the available power for WISP production in this type of experiments. The key elements are a frequency tunable narrow line-width continuous wave laser acting as the primary light source and an electronic feed-back control loop to stabilize the power build-up. We describe and characterize our apparatus and demonstrate the data analysis procedures on the basis of a brief exemplary run.

Klaus Ehret; Maik Frede; Samvel Ghazaryan; Matthias Hildebrandt; Ernst-Axel Knabbe; Dietmar Kracht; Axel Lindner; Jenny List; Tobias Meier; Niels Meyer; Dieter Notz; Javier Redondo; Andreas Ringwald; Günter Wiedemann; Benno Willke

2009-05-26T23:59:59.000Z

46

Bright, Indiana: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Edit with form History Share this page on Facebook icon Twitter icon Bright, Indiana: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates...

47

BrightSource | Open Energy Information  

Open Energy Info (EERE)

BrightSource BrightSource Jump to: navigation, search Logo: BrightSource Name BrightSource Address 1999 Harrison Street Place Oakland, California Zip 94612 Sector Solar Product CSP developer Year founded 1984 Number of employees 51-200 Website http://www.brightsourceenergy. Coordinates 37.8020203652°, -122.270536423° 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":37.8020203652,"lon":-122.270536423,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

48

NanoBright Technologies Pte Ltd | Open Energy Information  

Open Energy Info (EERE)

Jump to: navigation, search Name NanoBright Technologies Pte Ltd Place Singapore Sector Efficiency, Solar Product NanoBright Technologies develops luminescent materials,...

49

BrightPath Energy LLC | Open Energy Information  

Open Energy Info (EERE)

New York . References "BrightPath Energy LLC" Retrieved from "http:en.openei.orgwindex.php?titleBrightPathEnergyLLC&oldid343040" Categories: Clean Energy Organizations...

50

On the Brightness of Supernova Ia  

E-Print Network (OSTI)

Before 1998 the universe expansion was thought to be slowing down. After 1998 the universe expansion is thought to be accelerating up. The key evidence came from the observed brightness of high redshift supernovae Ia in 1998. Astronomers found that the observed brightness of high redshift supernovae Ia is fainter than expected. Astronomers believe this means that the universe expansion is accelerating up. In this paper it is argued that if the ionized gas in the universe space is taken into account, then the brightness of the high redshift supernova Ia should be fainter than expected. The universe expansion does not need to be accelerating up. The exotic form of energy (dark energy) does not need to be introduce

Yijia Zheng

2013-10-01T23:59:59.000Z

51

The Universe Adventure - Magnitude, Luminosity and Brightness  

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

Apparent Magnitude Apparent Magnitude Some astronomical objects and their magnitudes. Some astronomical objects and their apparent magnitudes from Earth. Before telescopes, people looked at the sky and classified the objects they saw by their brightness. Hipparchus, a Greek mathematician, classified over 850 cosmic objects into six categories of brightness. Scientists later adopted the word magnitude, keeping and extending the scale developed by Hipparchus. The brightest stars were called first magnitude stars, the next brightest being second magnitude stars, etc. Today, we measure the brightness of an object using this same scale, but with much more precision and using a much larger scale. The scale is formatted so that the lower the magnitude the brighter the object, which means a star with a magnitude of

52

ARM - Measurement - Longwave narrowband brightness temperature  

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

narrowband brightness temperature narrowband brightness temperature ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Longwave narrowband brightness temperature A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation in the same narrow band of wavelengths. Categories Radiometric Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments IRT : Infrared Thermometer Field Campaign Instruments RAD-AIR : Airborne Radiometers

53

Methods to study event-by-event fluctuations in the NA61/SHINE experiment at the CERN SPS  

Science Conference Proceedings (OSTI)

Theoretical calculations locate the critical point (CP) of strongly interacting matter at energies accessible at the CERN SPS. Event-by-event transverse momentum and multiplicity fluctuations are considered as one of the most important tools to search for the CP. Pilot studies of the energy dependence and the system size dependence of both p{sub T} and multiplicity fluctuations were performed by the NA49 experiment. The NA61/SHINE ion program is a continuation of these efforts. After briefly recalling the essential NA49 results on fluctuations we will discuss the technical methods (removing Non-Target interactions) which we plan to apply for future transverse momentum and multiplicity fluctuation analyses.

Cetner, T., E-mail: Tomasz.Cetner@cern.ch; Grebieszkow, K., E-mail: kperl@if.pw.edu.pl [Warsaw University of Technology, Faculty of Physics (Poland)

2012-05-15T23:59:59.000Z

54

PRODUCTION OF HIGH BRIGHTNESS PROTON BUNCHES.  

SciTech Connect

Strongly pulsed proton beams for secondary beam production are required for projects such as pulsed spallation neutron sources or neutrino factories where accurate time-of-flight information is required. To meet these demands techniques to produce multi-GeV proton bunches with very high longitudinal brightness are being developed. A review of the present status is presented.

ROSER,T.

2001-06-18T23:59:59.000Z

55

BrightPhase Energy | Open Energy Information  

Open Energy Info (EERE)

BrightPhase Energy BrightPhase Energy Jump to: navigation, search Logo: BrightPhase Energy Name BrightPhase Energy Address 8035 East 40th Avenue Place Denver, Colorado Zip 80207 Sector Solar Product Combination PV and day-lighting modules for commerical buildings Year founded 2000 Website http://www.brightphaseenergy.c Coordinates 39.7728396°, -104.8953944° 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":39.7728396,"lon":-104.8953944,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

56

Discovery of a GeV Blazar Shining Through the Galactic Plane  

Science Conference Proceedings (OSTI)

The Fermi Large Area Telescope (LAT) discovered a new gamma-ray source near the Galactic plane, Fermi J0109+6134, when it flared brightly in 2010 February. The low Galactic latitude (b = -1.2{sup o}) indicated that the source could be located within the Galaxy, which motivated rapid multi-wavelength follow-up including radio, optical, and X-ray observations. We report the results of analyzing all 19 months of LAT data for the source, and of X-ray observations with both Swift and the Chandra X-ray Observatory. We determined the source redshift, z = 0.783, using a Keck LRIS observation. Finally, we compiled a broadband spectral energy distribution (SED) from both historical and new observations contemporaneous with the 2010 February flare. The redshift, SED, optical line width, X-ray obsorption, and multi-band variability indicate that this new Gev source is a blazar seen through the Galactic plane. Because several of the optical emission lines have equivalent width > 5 {angstrom}, this blazar belongs in the flat-spectrum radio quasar category.

Vandenbroucke, J.; Buehler, R.; Ajello, M.; Bechtol, K.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Bellini, A.; /Padua U., Astron. Dept. /Baltimore, Space Telescope Sci.; Bolte, M.; /UC, Santa Cruz; Cheung, C.C.; /Naval Research Lab, Wash., D.C. /NAS, Washington, D.C.; Civano, F.; /Smithsonian Astrophys. Observ.; Donato, D.; /NASA, Goddard; Fuhrmann, L.; /Bonn, Max Planck Inst., Radioastron.; Funk, S.; Healey, S.E.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Hill, A.B.; /Joseph Fourier U.; Knigge, C.; /Southampton U.; Madejski, G.M.; Romani, R.W.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Santander-Garcia, M.; /IAC, La Laguna /Isaac Newton Group /Laguna U., Tenerife; Shaw, M.S.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC; Steeghs, D.; /Warwick U.; Torres, M.A.P.; /Smithsonian Astrophys. Observ.; Van Etten, A.; /Stanford U., HEPL /KIPAC, Menlo Park /SLAC /Texas U., Astron. Dept.

2011-08-11T23:59:59.000Z

57

Department Announces Loan Guarantee for BrightSource Energy Inc...  

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

company BrightSource Energy, Inc. to complete the construction of three concentrated solar power plants. BrightSource estimates the project will create more than 1,000 jobs...

58

Solar Cell Technology Opportunities: Looking To a Bright ...  

Science Conference Proceedings (OSTI)

Solar Cell Technology Opportunities: Looking To a Bright, Sunny Future. From NIST Tech Beat: April 26, 2011. ...

2011-04-26T23:59:59.000Z

59

Energy dependence of identified hadron spectra and event-by-event fluctuations in p+p interactions from NA61/SHINE at the CERN SPS  

E-Print Network (OSTI)

NA61/SHINE at the CERN SPS is a fixed-target experiment pursuing a rich physics program including measurements for heavy ion, neutrino and cosmic ray physics. The main goal of the ion program is to explore the most interesting $T, mu_{B}$ region of the phase diagram of strongly interacting matter. We plan to study the properties of the onset of deconfinement and to search for the signatures of the critical point. The search is performed by varying collision energy (13A-158A GeV/c) and system size (p+p, Be+Be, Ar+Ca, Xe+La). Thanks to its large acceptance and excellent particle identification capability NA61/SHINE is well suited for performing high-precision particle production measurements as well as for studying event-by-event fluctuations in p+p, p+nucleus and nucleus+nucleus collisions. Preliminary results on p+p interactions at 20, 31, 40, 80 and 158 GeV/c are presented. They include inclusive spectra of pi+, pi-, K- and protons as a function of transverse momentum/mass and rapidity as well as event-by-event fluctuations of transverse momentum, azimuthal angle and chemical composition. The new NA61 measurements are compared with the corresponding results of NA49 on central Pb+Pb collisions and with predictions of Monte Carlo models. Finally, the future plans of NA61/SHINE are summarised.

Maciej Rybczynski

2013-01-15T23:59:59.000Z

60

Search for MeV dark photons in a light-shining-through-walls experiment at CERN  

E-Print Network (OSTI)

In addition to gravity, there might be another very weak interaction between the ordinary and dark matter transmitted by U'(1) gauge bosons A' (dark photons) mixing with our photons. If such A's exist, they could be searched for in a light-shining-through-a-wall experiment with a high energy electron beam. The electron energy absorption in a calorimeter (CAL1) is accompanied by the emission of bremsstrahlung A's in the reaction eZ -> eZA' of electrons scattering on nuclei due to the photon - A' mixing. A part of the primary beam energy is deposited in the CAL1, while the rest of the energy is transmitted by the A' through the "CAL1 wall" and deposited in another downstream calorimeter CAL2 by the e+e- pair from the A'->e+e- decay in flight. Thus, the A's could be observed by looking for an excess of events with the two-shower signature generated by a single high energy electron in the CAL1 and CAL2. A proposal to perform such an experiment to probe the still unexplored area of the mixing strength 10^{-5} < \\epsilon < 10^{-3} and masses M_{A'} < 100 MeV by using 10-300 GeV electron beams from the CERN SPS is presented. The experiment can provide complementary coverage of the parameter space, which is intended to be probed by other searche

S. N. Gninenko

2013-08-29T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

Automated Classification of 2000 Bright IRAS Sources  

E-Print Network (OSTI)

An Artificial Neural Network (ANN) has been employed using a supervised back-propagation scheme to classify 2000 bright sources from the Calgary database of IRAS (Infrared Astronomy Satellite) spectra in the wavelength region of 8-23 microns. The data base has been classified into 17 pre-determined classes based on spectral morphology. We have been able to classify more than 80 percent of the 2000 sources correctly at the first instance. The speed and robustness of the scheme will allow us to classify the whole of LRS database, containing more than 50,000 sources in the future.

Ranjan Gupta; Harinder P. Singh; K. Volk; S. Kwok

2004-03-10T23:59:59.000Z

62

Automated Classification of 2000 Bright IRAS Sources  

E-Print Network (OSTI)

An Artificial Neural Network (ANN) scheme has been employed that uses a supervised back-propagation algorithm to classify 2000 bright sources from the Calgary database of IRAS (Infrared Astronomical Satellite) spectra in the region 8µm to 23µm. The database has been classified into 17 predefined classes based on the spectral morphology. We have been able to classify over 80 percent of the sources correctly in the first instance. The speed and robustness of the scheme will allow us to classify the whole of the LRS database, containing more that 50,000 sources, in the near future.

Ranjan Gupta; Harinder P. Singh; K. Volk; S. Kwok

2004-01-01T23:59:59.000Z

63

of Bright, Long Gamma-Ray Bursts  

E-Print Network (OSTI)

The time profiles of many gamma-ray bursts observed by BATSE consist of distinct pulses, which offer the possibility of characterizing the temporal structure of these bursts using a relatively small set of pulse-shape parameters. This pulse analysis has previously been performed on some bright, long bursts using binned data, and on some short bursts using BATSE Time-Tagged Event (TTE) data. The BATSE Time-to-Spill (TTS) burst data records the times required to accumulate a fixed number of photons, giving variable time resolution. The spill times recorded in the TTS data behave as a gamma distribution. We have developed an interactive pulse-fitting program using the pulse model of Norris et al. and a maximum-likelihood fitting algorithm to the gamma distribution of the spill times. We then used this program to analyze a number of bright, long bursts for which TTS data is available. We present statistical information on the attributes of pulses comprising these bursts.

Andrew Lee; Elliott Bloom; Jeffrey Scargle

1996-01-01T23:59:59.000Z

64

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors.

Anderson, B; Dervan, P J; Lauber, J A; Thomas, J

1999-01-01T23:59:59.000Z

65

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors.

B. Anderson; A. Anjomshoaa; P. Dervan; J. A. Lauber; J. Thomas

1998-10-26T23:59:59.000Z

66

Ultra Bright LED Light Injection Calibration System for MINOS  

E-Print Network (OSTI)

We describe here a proposal for a light injection calibration system for the MINOS detectors based on ultra bright blue LEDs as the light source. We have shown that these LEDs are bright enough to span over two orders of magnitude in light intensity, commensurate with that expected in a single scintillator strip in the MINOS neutrino detectors. 1

B. Anderson; A. Anjomshoaa; P. Dervan; J. A. Lauber; J. Thomas

2008-01-01T23:59:59.000Z

67

Infrared Sky Brightness Monitors for Antarctica  

E-Print Network (OSTI)

. Two sky brightness monitorsone for the near-infrared and one for the mid-infraredhave been developed for site survey work in Antarctica. The instruments, which we refer to as the NISM (Near-Infrared Sky Monitor) and the MISM (Mid-Infrared Sky Monitor), are part of a suite of instruments being deployed in the Automated Astrophysical Site-Testing Observatory (AASTO). The chief design constraints include reliable, autonomous operation, low power consumption, and of course the ability to operate under conditions of extreme cold. The instruments are currently operational at the Amundsen-Scott South Pole Station, prior to deployment at remote, unattended sites on the high antarctic plateau. 1. INTRODUCTION The antarctic plateau is recognized as having the potential to provide some of the best astronomical observing conditions on earth (see, e.g., Burton et al. 1994). Almost all the site testing to date has been carried out at the South Pole, where it has already been demonstrated t...

Storey Ashley Boccas; J. W. V. Storey; M. C. B. Ashley; M. Boccas; M. A. Phillips; A. E. T. Schinckel

1999-01-01T23:59:59.000Z

68

High output lamp with high brightness  

DOE Patents (OSTI)

An ultra bright, low wattage inductively coupled electrodeless aperture lamp is powered by a solid state RF source in the range of several tens to several hundreds of watts at various frequencies in the range of 400 to 900 MHz. Numerous novel lamp circuits and components are disclosed including a wedding ring shaped coil having one axial and one radial lead, a high accuracy capacitor stack, a high thermal conductivity aperture cup and various other aperture bulb configurations, a coaxial capacitor arrangement, and an integrated coil and capacitor assembly. Numerous novel RF circuits are also disclosed including a high power oscillator circuit with reduced complexity resonant pole configuration, parallel RF power FET transistors with soft gate switching, a continuously variable frequency tuning circuit, a six port directional coupler, an impedance switching RF source, and an RF source with controlled frequency-load characteristics. Numerous novel RF control methods are disclosed including controlled adjustment of the operating frequency to find a resonant frequency and reduce reflected RF power, controlled switching of an impedance switched lamp system, active power control and active gate bias control.

Kirkpatrick, Douglas A. (Great Falls, VA); Bass, Gary K. (Mt. Airy, MD); Copsey, Jesse F. (Germantown, MD); Garber, Jr., William E. (Poolesville, MD); Kwong, Vincent H. (Vancouver, CA); Levin, Izrail (Silver Spring, MD); MacLennan, Donald A. (Gaithersburg, MD); Roy, Robert J. (Frederick, MD); Steiner, Paul E. (Olney, MD); Tsai, Peter (Olney, MD); Turner, Brian P. (Damascus, MD)

2002-01-01T23:59:59.000Z

69

Ultra-Bright Source Of Polarization-Entangled Photons  

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

Ultra-Bright Source Of Polarization-Entangled Photons Ultra-Bright Source Of Polarization-Entangled Photons Ultra-Bright Source Of Polarization-Entangled Photons Utilizing the process of spontaneous parametric down-conversion in a novel crystal geometry, a source of polarization-entangled photon pairs has been provided that is more than ten times brighter, per unit of pump power, than previous sources, with another factor of 30 to 75 expected to be readily achievable. Available for thumbnail of Feynman Center (505) 665-9090 Email Ultra-Bright Source Of Polarization-Entangled Photons Utilizing the process of spontaneous parametric down-conversion in a novel crystal geometry, a source of polarization-entangled photon pairs has been provided that is more than ten times brighter, per unit of pump power, than previous sources, with another factor of 30 to 75 expected to be readily

70

Raindrop Size Distributions and the Radar Bright Band  

Science Conference Proceedings (OSTI)

The relationship between raindrop size distribution, measured with a disdrometer, and a radar parameter of the melting-layer bright band is investigated. The data, obtained in July 1993 in Switzerland, cover 120 h of precipitation. A good ...

A. Huggel; W. Schmid; A. Waldvogel

1996-10-01T23:59:59.000Z

71

Passive Microwave Brightness Temperatures as Proxies for Hailstorms  

Science Conference Proceedings (OSTI)

The Tropical Rainfall Measuring Mission (TRMM) satellite has been used to infer distributions of intense thunderstorms. Besides the lightning measurements from TRMM, the radar reflectivities and passive microwave brightness temperatures have been ...

Daniel J. Cecil

2009-06-01T23:59:59.000Z

72

Use of Microwave Brightness Temperatures With a General Circulation Model  

E-Print Network (OSTI)

., 1990; Christy and Drouilhet, 1994) who compiled a monthly mean brightness temperature cli­ matology and Drouilhet, 1994). The standard deviations in Fig­ ure 3c reach 7.8 K in the January northern high lati

Fridlind, Ann

73

PPPL: Great story, Bright Future | Princeton Plasma Physics Lab  

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

Great story, Bright Future By Kitta MacPherson May 12, 2011 Tweet Widget Facebook Like Google Plus One Stewart Prager Stewart Prager Stewart Prager Stewart Prager Stewart Prager...

74

Infrared Brightness Temperature of Mars, 1983-2103  

E-Print Network (OSTI)

The predicted infrared brightness temperature of Mars using the 1976 model of Wright is tabulated here for the period 1983 to 2103. This model was developed for far-infrared calibration, and is still being used for JCMT calibration.

E. L. Wright

2007-03-25T23:59:59.000Z

75

Bright Lights From Dark Places | Department of Energy  

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

Bright Lights From Dark Places Bright Lights From Dark Places Bright Lights From Dark Places May 23, 2011 - 2:09pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? Scientists used the illumination of some 14,000 quasars -- powered by gigantic black holes at the heart of galaxies -- about 10 to 12 billion light years away to create the new map. Scientists at the Energy Department's national labs are using black holes to illuminate the distant parts of the universe in detail. Specifically, scientists from the Sloan Digital Sky Survey (SDSS-III), of which the Department's Lawrence Berkley and Brookhaven National Labs are both a part, have used quasars to construct the largest three-dimensional map of the universe ever made. Quasars are one of the most brilliant beacons in

76

Sensor Switch's Bright Manufacturing Future | Department of Energy  

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

Sensor Switch's Bright Manufacturing Future Sensor Switch's Bright Manufacturing Future Sensor Switch's Bright Manufacturing Future June 16, 2010 - 12:01pm Addthis Lindsay Gsell It's a simple concept that's saving thousands of dollars in utility bills each year: when a room is empty, turn off the lights. This is the basic concept behind Sensor Switch, a Connecticut-based manufacturer of lighting control products. Sensor Switch's occupancy sensor devices turn off lights when spaces are vacant. They also make devices that dim or turn off lights when sufficient daylight is present. Both types of products provide cost effective energy savings in indoor spaces like office buildings and warehouses. "There's an increasing public demand to save energy, which directly impacts the demand for our products," said Ben Hahn, vice president. "A key part of

77

Bright Lights and Even Brighter Ideas | Department of Energy  

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

Bright Lights and Even Brighter Ideas Bright Lights and Even Brighter Ideas Bright Lights and Even Brighter Ideas July 3, 2013 - 2:04pm Addthis Kim Kisslinger, a researcher at Brookhaven Lab's Center for Functional Nanomaterials seen here with a focused-ion beam instrument, reduced the indium gallium nitride (InGaN) samples to a thickness of just 20 nanometers to prepare them for electron microscopy. | Photo courtesy of Brookhaven National Laboratory. Kim Kisslinger, a researcher at Brookhaven Lab's Center for Functional Nanomaterials seen here with a focused-ion beam instrument, reduced the indium gallium nitride (InGaN) samples to a thickness of just 20 nanometers to prepare them for electron microscopy. | Photo courtesy of Brookhaven National Laboratory. Charles Rousseaux Charles Rousseaux

78

Argonne Theory Institute on Production of Bright Electron Beams  

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

White Paper PDF White Paper PDF Online Presentations Program PDF Reading List Note from C. Sinclair on Electron Emitters and Emission Processes PDF Attendee List PDF Argonne Theory Institute on Production of Bright Electron Beams September 22-26, 2003 Argonne National Laboratory, Argonne, IL Argonne National Laboratory recently initiated a new research program called "Theory Institute." As a part of this program, a beam physics theory week on "Production of Bright Electron Beams" will be held to review the current methods of generating high-brightness electron beams, determine what the fundamental limits are, study possible ways to improve them. Extensive discussion of issues including, but not limited to, the following: How should we quantify qualities of a beam?

79

Bright Green Spot: Fort Worth Library | Department of Energy  

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

Bright Green Spot: Fort Worth Library Bright Green Spot: Fort Worth Library Bright Green Spot: Fort Worth Library September 30, 2010 - 4:07pm Addthis Lindsay Gsell Fort Worth's Central Library is seeing tremendous energy savings by cutting down consumption. Using an Energy Efficiency and Conservation Block Grant from the Recovery Act, the city was able to have the building retrofitted and install a building management system. The system allows library staff to control the indoor climate of the library from one location to reduce operating costs of the facility. Addthis Related Articles Captured data from the monitoring system at the public library shows that energy usage was highest at 10:30a.m., a time when a number of patrons in the library would be using computers and lighting. | Photo courtesy of Texas Institute for Sustainable Technology Research

80

Solar Generation Has a Bright Future | Department of Energy  

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

Generation Has a Bright Future Generation Has a Bright Future Solar Generation Has a Bright Future September 12, 2012 - 3:06pm Addthis Growth of Solar Power Electricity Generation in the United States, 1999-2013 | Chart provided by the U.S. Energy Information Administration Growth of Solar Power Electricity Generation in the United States, 1999-2013 | Chart provided by the U.S. Energy Information Administration Matthew Loveless Matthew Loveless Data Integration Specialist, Office of Public Affairs The amount of electricity the United States generates from solar power has started to grow rapidly and is projected to reach 18,000 megawatt hours per day in 2013. A growing solar industry presents a tremendous economic opportunity for the United States, and that is why the Energy Department's SunShot Initiative

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81

Photo of the Week: Bright Ideas | Department of Energy  

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

Bright Ideas Bright Ideas Photo of the Week: Bright Ideas November 21, 2013 - 3:47pm Addthis This week, the Energy Department's digital team has been focusing on the rivalry between two of history's most important energy-related engineers: Thomas Edison and Nikola Tesla. Edison and Tesla's developments in electric power generation and distribution made possible many later breakthroughs. This 1951 photo shows a simple string of four 100-watt light bulbs powered by the first useful electricity ever produced by nuclear power, generated on December 20, 1951, by Argonne's Experimental Breeder Reactor 1. | Photo courtesy of Argonne National Laboratory. This week, the Energy Department's digital team has been focusing on the rivalry between two of history's most important energy-related engineers:

82

A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent  

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

A Bright Idea: New Efficiency Standards for Incandescent and A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights A Bright Idea: New Efficiency Standards for Incandescent and Fluorescent Lights July 21, 2009 - 5:18pm Addthis John Lippert Pretty soon, lighting is going to get a lot more efficient. New standards for incandescent reflector bulbs, general purpose fluorescent bulbs, and regular incandescent bulbs are going into effect beginning in approximately three years. You may be curious about how these standards will affect the most popular types of incandescent bulbs we've all used for so long: the common non-reflector 40-watt, 60-watt, 75-watt, and 100-watt bulbs. The Energy Independence and Security Act of 2007 (also known as EISA) requires that these incandescent bulbs use 30% less energy than today's

83

Burkina Faso BRIGHT Evaluation Data | Data.gov  

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

Burkina Faso BRIGHT Evaluation Data Burkina Faso BRIGHT Evaluation Data Agriculture Community Menu DATA APPS EVENTS DEVELOPER STATISTICS COLLABORATE ABOUT Agriculture You are here Data.gov » Communities » Agriculture » Data Burkina Faso BRIGHT Evaluation Data Dataset Summary Description In 2007-08, Mathematica Policy Research and the University of Ouagadougou conducted household and school surveys as part of MCC's evaluation of the Burkina Faso Threshold Program, which sought to increase educational attainment through the construction of schools and complementary interventions. The surveys were conducted in 291 villages, of which 132 were participant villages and 159 comparison villages. Tags {Burkina,Faso,evaluation,education,school,impact,aid,results,random,regression,discontinuity,"threshold program"}

84

High brightness sources for MeV microprobe applications  

Science Conference Proceedings (OSTI)

State of the art MeV ion microprobe facilities are now approaching current density limitations on targets imposed by the fundamental nature of conventional gaseous ion sources. With a view to addressing this problem efforts are under way which have the ultimate objective of developing high brightness Li liquid metal ion sources suitable for MeV ion microprobe applications. Prototype Li/sup +/ and Ga/sup +/ liquid metal ion sources have been designed, fabricated and are undergoing preliminary testing. This paper describes the first total emittance and brightness measurements of a Ga liquid metal ion source. The effect of the geometry of the ion extraction system is investigated and the brightness data are compared to those of a radio frequency ion source.

Read, P.M.; Alton, G.D.; Maskrey, J.T.

1987-01-01T23:59:59.000Z

85

SC-RISE LECTURE SERIES BRIGHT HORIZONS IN SOLAR ENERGY  

E-Print Network (OSTI)

SC-RISE LECTURE SERIES BRIGHT HORIZONS IN SOLAR ENERGY Sustainable Energy Opportunities, Options are being developed including biomass, geothermal, hydropower, ocean thermal energy conversion, solar electric, solar thermal, and wind. However, such aspects as low energy density, siting, and temporal

86

SSM/I Brightness Temperature Corrections for Incidence Angle Variations  

Science Conference Proceedings (OSTI)

The incidence angles of the SSM/I radiometers on the DMSP satellites vary from satellite to satellite and exhibit variations of up to 1.5° during one orbit. The effects of these variations on the measured brightness temperatures are investigated ...

Rolf Fuhrhop; Clemens Simmer

1996-02-01T23:59:59.000Z

87

Brightness Rural Electrification Program: Renewable Energy in China  

DOE Green Energy (OSTI)

Fact sheet describes China's New Brightness Rural Electrification Program to provide electricity for 23 million people in remote areas of China using renewable energy such as wind energy and solar power (photovoltaics). Targets, results, and progress are described. Regions targeted are Inner Mongolia, Tibet, and Gansu.

Not Available

2004-04-01T23:59:59.000Z

88

NREL: News Feature - Bright Ideas Chase Investor Dollars at Forum  

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

Bright Ideas Chase Investor Dollars at Forum Bright Ideas Chase Investor Dollars at Forum December 17, 2013 In this photo, two men in suits are in animated conversation, while two others listen in. In the background are other conference attendees in a crowded room. Enlarge image Ilan Gur (right), program director and technology-to-market senior advisor for ARPA-E, networks with company representatives and investors at NREL's 2013 Industry Growth Forum in Denver. Credit: Dennis Schroeder A company that can generate electricity using low-temperature waste heat was the big winner at the recent 26th annual Industry Growth Forum in downtown Denver, a gathering of people who have no qualms about making money while helping to build a more sustainable world. The annual gathering sponsored by the Energy Department's National

89

Fast microtomography using bright monochromatic x-rays  

Science Conference Proceedings (OSTI)

A fast microtomography system for high-resolution high-speed imaging has been developed using bright monochromatic x-rays at the BL29XU beamline of SPring-8. The shortest scan time for microtomography we attained was 0.25 s in 1.25 {mu}m effective pixel size by combining the bright monochromatic x-rays, a fast rotating sample stage, and a high performance x-ray imaging detector. The feasibility of the tomography system was successfully demonstrated by visualization of rising bubbles in a viscous liquid, an interesting issue in multiphase flow physics. This system also provides a high spatial (a measurable feature size of 300 nm) or a very high temporal (9.8 {mu}s) resolution in radiographs.

Jung, J. W.; Lee, J. S.; Park, S. J.; Chang, S.; Pyo, J. [X-ray Imaging Center, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784 (Korea, Republic of); Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784 (Korea, Republic of); Kwon, N.; Kim, J. [X-ray Imaging Center, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784 (Korea, Republic of); School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); Kohmura, Y.; Nishino, Y.; Yamamoto, M.; Ishikawa, T. [RIKEN/SPring-8, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5148 (Japan); Je, J. H. [X-ray Imaging Center, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784 (Korea, Republic of); Department of Materials Science and Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Pohang 790-784 (Korea, Republic of); School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784 (Korea, Republic of); RIKEN/SPring-8, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo 679-5148 (Japan)

2012-09-15T23:59:59.000Z

90

Bright Skies Ahead for Moapa | Department of Energy  

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

Bright Skies Ahead for Moapa Bright Skies Ahead for Moapa Bright Skies Ahead for Moapa March 1, 2013 - 7:19pm Addthis In addition to the planned 250-MW solar farm set to begin construction in June 2013, the Moapa Band of Paiutes is working on a second 150-MW project that would use both PV and concentrated solar technologies to generate power for the Tribe. Photo from Moapa Band of Paiutes. In addition to the planned 250-MW solar farm set to begin construction in June 2013, the Moapa Band of Paiutes is working on a second 150-MW project that would use both PV and concentrated solar technologies to generate power for the Tribe. Photo from Moapa Band of Paiutes. Photo from Moapa Band of Paiutes. Photo from Moapa Band of Paiutes. Moapa Band of Paiutes Chairman William Anderson. In addition to the planned 250-MW solar farm set to begin construction in June 2013, the Moapa Band of Paiutes is working on a second 150-MW project that would use both PV and concentrated solar technologies to generate power for the Tribe. Photo from Moapa Band of Paiutes.

91

Pilot Study: Measurement of Room Illuminance to Assess Automatic Brightness  

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

Study: Measurement of Room Illuminance to Assess Automatic Brightness Study: Measurement of Room Illuminance to Assess Automatic Brightness Control in Televisions Title Pilot Study: Measurement of Room Illuminance to Assess Automatic Brightness Control in Televisions Publication Type Conference Proceedings Year of Publication 2012 Authors Greenblatt, Jeffery B., Mia Forbes Pirie, Louis-Benoit Desroches, Sally M. Donovan, Clancy Donnelly, Craig Billingsley, and Chris Calwell Pagination 13 Date Published August 12 Conference Location Berkeley Abstract Automatic brightness control (ABC) is an increasingly common feature found in newtelevisions (TVs) and computer monitors. ABC is intended to adjust TV screen brightness(luminance) according to the ambient light level (room illuminance). When implementedcorrectly, this can both reduce energy consumption and improve viewing quality. The currentENERGY STAR test procedure provides for a more favorable energy use rating for TVs withABC, by measuring power consumption at two light levels (0 and 300 lux) and reporting aweighted-average energy use. However, this and other studies suggest that these levels are notrepresentative of actual TV viewing conditions.As there were currently only limited data available concerning room illuminance, weundertook a small pilot study in 2011 to begin to answer two key questions: 1. To what extent doroom illuminance levels vary depending on the location of measurement (e.g., center of theroom, on the couch, or at the TV)? 2. What room illuminance conditions are prevalent whenpeople watch TV?We measured room illuminance in the homes of nine volunteers in California andColorado to begin addressing the above two questions. Although the study had the usualdrawbacks of a pilot (limited sample size, time duration, etc.), it has, nonetheless, yielded usefulresults. The study shows definitively that there is large variability between measurements madeat different locations in the room and, therefore, that location of room illuminance measurementsis critical. Moreover, the majority (over 75%) of TV viewing occurred at illuminance levels ofless than 50 lux (though measurements of up to several hundred lux were also recorded), a resultthat was consistent with subsequent larger-scale studies. This type of information can helpdetermine how ABC-enabled TVs should be tested to best represent actual viewing conditions.

92

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained  

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

Posters Comparisons of Brightness Temperature Measurements and Calculations Obtained During the Spectral Radiance Experiment Y. Han, J. B. Snider, and E. R. Westwater National Oceanic and Atmospheric Administration Environmental Research Laboratories/Environmental Technology Laboratory Boulder, Colorado S. H. Melfi National Aeronautics and Space Administration Goddard Space Flight Center Greenbelt, Maryland R. A. Ferrare Hughes STX Corporation Lanham, Maryland Introduction In radiometric remote sensing of the atmosphere, the ability to calculate radiances from underlying state variables is fundamental. To infer temperature and water vapor profiles from satellite- or ground-based radiometers, one must determine cloud-free regions and then calculate clear-sky radiance emerging from the top of the earth's

93

A detection of bright features in the microwave background  

E-Print Network (OSTI)

We report the characterization of bright, compact features in the cosmic microwave background radiation (CMBR) detected during the June 1992 and June 1994 balloon flights of the Medium Scale Anisotropy Measurement (MSAM1-92 and MSAM1-94, respectively). Spectral flux densities are determined for each feature at 5.7, 9.3, and 16.5 cm^{-1}. No viable counterparts for these features were found in source catalogs at 5 GHz or at 100 \\mum. The measured spectrum of each feature is consistent with a temperature fluctuation in the CMBR. The existence of these features is consistent with adiabatic fluctuation models of anisotropy in the CMBR.

Kowitt, M S; Cottingham, D A; Fixsen, D J; Inman, C A; Meyer, S; Page, L A; Puchalla, J L; Ruhl, J E; Silverberg, R F

1996-01-01T23:59:59.000Z

94

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

95

New family of tiny crystals glow bright in LED lights | ornl...  

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

| ORNL | News | Features SHARE News Feature New family of tiny crystals glow bright in LED lights ORNL scientist probes atomic structure to improve materials' luminescence...

96

Robust difference imaging of high surface brightness targets  

E-Print Network (OSTI)

Over the last two decades the Andromeda Galaxy (M31) has been something of a test-bed for methods aimed at obtaining accurate time-domain relative photometry within highly crowded fields. Difference imaging methods, originally pioneered towards M31, have evolved into sophisticated methods, such as the Optimal Image Subtraction (OIS) method of Alard & Lupton (1998), that today are most widely used to survey variable stars, transients and microlensing events in our own Galaxy. We show that modern difference image (DIA) algorithms such as OIS, whilst spectacularly successful towards the Milky Way bulge, may perform badly towards high surface brightness targets such as the M31 bulge. Poor results typically occur in the presence of common data systematics that scale with image flux such as internal reflections, scattered light, flat field errors or fringing. Using data from the Angstrom Project microlensing survey of the M31 bulge, we show that very good results are usually obtainable by first performing caref...

Kerins, E; Duke, J P; Gould, A; Han, C; Newsam, A; Park, B -G; Street, R

2010-01-01T23:59:59.000Z

97

Fundamental Photoemission Brightness Limit from Disorder Induced Heating  

E-Print Network (OSTI)

We determine the limit of the highest achievable photoemitted electron brightness, due to heating just after emission into vacuum, applicable to both relativistic and nonrelativistic photoelectron production. This heating is due to poorly screened Coulomb interactions equivalent to disorder induced heating seen in ultracold neutral plasmas. Owing to the multi-scale nature of the initial interactions of such systems, an N-body tree algorithm is used to compute the universal scaling of the disorder induced heating in fully contained bunches, and is shown to agree well with a simple model utilizing the tabulated correlated energy of one component plasmas. We also present simulations for beams undergoing Coulomb explosion at the photocathode, and demonstrate that both the temperature growth and subsequent cooling must be characterized by correlated effects, as well as correlation-frozen dynamics. In either case, the induced temperature is found to be of several meV for typical photoinjector beam densities, a sign...

Maxson, Jared; Coleman-Smith, Christopher; Wan, Weishi; Padmore, Howard

2013-01-01T23:59:59.000Z

98

Chemistry World Twist and shine  

E-Print Network (OSTI)

at Urbana-Champaign, US, worked with researchers in the US, Korea, China and Singapore to build on his wound healing. The arrays could also be used in photodynamic drug therapy, to control the delivery of drugs that are triggered by light in a more precise way. The LED arrays were implanted under the skin

Rogers, John A.

99

Where radiant barriers really shine  

Science Conference Proceedings (OSTI)

Manufactures of radiant barrier materials claim their products significantly cut cooling costs by reducing summertime radiant heat gain through attics and ceilings. A new study confirms that radiant barriers can indeed conserve cooling energy. However, the study`s authors found that radiant barriers are much more effective at reducing energy losses from attic air conditioner duct runs than at directly lowering heat transfer through the attic floor into conditioned living space. Furthermore the study demonstrated that radiant barrier savings can be significant even in a new well-weatherized house and that these saving may justify specifying smaller capacity cooling systems. This article discusses the findings of the study.

Engel, R.

1996-07-01T23:59:59.000Z

100

Bright and dark exciton energy and excitonic effect of single wall carbon  

E-Print Network (OSTI)

Bright and dark exciton energy and excitonic effect of single wall carbon nanotubes Kentaro Sato1-inactive (dark) exciton energy of single wall carbon nanotubes (SWNTs). The bright and dark exciton energy of SWNTs is calculated by solving the Bethe-Salpeter equation in which the one particle energies are given

Maruyama, Shigeo

Note: This page contains sample records for the topic "all-stars shine bright" 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

DOE Finalizes $1.6 Billion Loan Guarantee for BrightSource Energy Inc. |  

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

Finalizes $1.6 Billion Loan Guarantee for BrightSource Energy Finalizes $1.6 Billion Loan Guarantee for BrightSource Energy Inc. DOE Finalizes $1.6 Billion Loan Guarantee for BrightSource Energy Inc. April 11, 2011 - 12:00am Addthis Washington D.C. - Announced this afternoon via Twitter.com/energy, the U.S. Department of Energy finalized $1.6 billion in loan guarantees to support the Ivanpah Solar Energy Generating System, three related utility-scale concentrated solar power plants. The Recovery Act funded project, sponsored by BrightSource Energy, Inc., will be located on federally-owned land in the Mojave Desert in southeastern California, near the Nevada border, and will be one of the world's largest concentrated solar power complexes. BrightSource estimates the project will create approximately 1,000 construction jobs and 86 operations and maintenance

102

BrightPhase Energy Inc formerly Solar Focus | Open Energy Information  

Open Energy Info (EERE)

Energy Inc formerly Solar Focus Energy Inc formerly Solar Focus Jump to: navigation, search Name BrightPhase Energy Inc (formerly Solar Focus) Place Fletcher, North Carolina Zip 28732 Sector Solar Product Solar Focus develops thermal and electric reflecting concentrator systems for water heating and electricity generation. References BrightPhase Energy Inc (formerly Solar Focus)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. BrightPhase Energy Inc (formerly Solar Focus) is a company located in Fletcher, North Carolina . References ↑ "[ BrightPhase Energy Inc (formerly Solar Focus)]" Retrieved from "http://en.openei.org/w/index.php?title=BrightPhase_Energy_Inc_formerly_Solar_Focus&oldid=343041"

103

Graphical Methods for Quantifying Macromolecules through Bright Field Imaging  

SciTech Connect

Bright ?eld imaging of biological samples stained with antibodies and/or special stains provides a rapid protocol for visualizing various macromolecules. However, this method of sample staining and imaging is rarely employed for direct quantitative analysis due to variations in sample fixations, ambiguities introduced by color composition, and the limited dynamic range of imaging instruments. We demonstrate that, through the decomposition of color signals, staining can be scored on a cell-by-cell basis. We have applied our method to Flbroblasts grown from histologically normal breast tissue biopsies obtained from two distinct populations. Initially, nuclear regions are segmented through conversion of color images into gray scale, and detection of dark elliptic features. Subsequently, the strength of staining is quanti?ed by a color decomposition model that is optimized by a graph cut algorithm. In rare cases where nuclear signal is significantly altered as a result of samplepreparation, nuclear segmentation can be validated and corrected. Finally, segmented stained patterns are associated with each nuclear region following region-based tessellation. Compared to classical non-negative matrix factorization, proposed method (i) improves color decomposition, (ii) has a better noise immunity, (iii) is more invariant to initial conditions, and (iv) has a superior computing performance

Chang, Hang; DeFilippis, Rosa Anna; Tlsty, Thea D.; Parvin, Bahram

2008-08-14T23:59:59.000Z

104

Low Cost Lithography Tool for High Brightness LED Manufacturing  

Science Conference Proceedings (OSTI)

The objective of this activity was to address the need for improved manufacturing tools for LEDs. Improvements include lower cost (both capital equipment cost reductions and cost-ofownership reductions), better automation and better yields. To meet the DOE objective of $1- 2/kilolumen, it will be necessary to develop these highly automated manufacturing tools. Lithography is used extensively in the fabrication of high-brightness LEDs, but the tools used to date are not scalable to high-volume manufacturing. This activity addressed the LED lithography process. During R&D and low volume manufacturing, most LED companies use contact-printers. However, several industries have shown that these printers are incompatible with high volume manufacturing and the LED industry needs to evolve to projection steppers. The need for projection lithography tools for LED manufacturing is identified in the Solid State Lighting Manufacturing Roadmap Draft, June 2009. The Roadmap states that Projection tools are needed by 2011. This work will modify a stepper, originally designed for semiconductor manufacturing, for use in LED manufacturing. This work addresses improvements to yield, material handling, automation and throughput for LED manufacturing while reducing the capital equipment cost.

Andrew Hawryluk; Emily True

2012-06-30T23:59:59.000Z

105

Sapphire - A High Peak Brightness X-Ray Source as a Possible Option for a Next Generation UK Light Source  

E-Print Network (OSTI)

Sapphire - A High Peak Brightness X-Ray Source as a Possible Option for a Next Generation UK Light Source

Walker, R P; Christou, C; Han, J H; Kay, J

2008-01-01T23:59:59.000Z

106

Supernovae of the Same Brightness, Cut From Vastly Different Cosmic Cloth  

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

Supernovae of the Supernovae of the Same Brightness, Cut From Vastly Different Cosmic Cloth Supernovae of the Same Brightness, Cut From Vastly Different Cosmic Cloth Berkeley Lab researchers make historic observation of rare Type 1a Supernova August 23, 2012 | Tags: Astrophysics Linda Vu, lvu@lbl.gov, +1 510 495 2402 ptf11kx.png The supernova PTF 11kx can be seen as the blue dot on the galaxy. The image was taken when the supernova was near maximum brightness by the Faulkes Telescope North. The system is located approximately 600 million light years away in the constellation Lynx. Image Credit: BJ Fulton (Las Cumbres Observatory Global Telescope Network) Exploding stars called Type 1a supernova are ideal for measuring cosmic distance because they are bright enough to spot across the Universe and

107

Ashland Electric Utility - Bright Way to Heat Water Loan | Department of  

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

Ashland Electric Utility - Bright Way to Heat Water Loan Ashland Electric Utility - Bright Way to Heat Water Loan Ashland Electric Utility - Bright Way to Heat Water Loan < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate not specified Program Info State Oregon Program Type Utility Loan Program Rebate Amount not specified Provider Ashland Electric Utilities Department The City of Ashland Conservation Division offers a solar water heating program to residential electric customers who currently use an electric water heater. Under "The Bright Way to Heat Water Program," qualified home owners may take advantage of the City's zero-interest loan program or a cash rebate. Customers choosing a loan repay it as part of their monthly utility bill. Interested customers are provided site evaluations, consumer

108

Bright Young Minds for a Clean Energy Future | Department of Energy  

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

Bright Young Minds for a Clean Energy Future Bright Young Minds for a Clean Energy Future Bright Young Minds for a Clean Energy Future August 16, 2011 - 12:11pm Addthis Bright Young Minds for a Clean Energy Future Sarah Jane Maxted Special Assistant, Office of Energy Efficiency & Renewable Energy How can I participate? Registration begins August 15 and ends on October 7, 2011. Students are encouraged to register with their teachers by September 30, 2011 to take advantage of the full energy savings period. It's that time again: Back to school season is officially here! Time for students to prepare for the new experiences and challenges that they will encounter throughout the upcoming school year. One such challenge-from the Energy Department in partnership with the National Science Teachers Association (NSTA)-aims to tap into the

109

Ashland Electric Utility - Bright Way to Heat Water Rebate | Department of  

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

Ashland Electric Utility - Bright Way to Heat Water Rebate Ashland Electric Utility - Bright Way to Heat Water Rebate Ashland Electric Utility - Bright Way to Heat Water Rebate < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $1,000 Program Info State Oregon Program Type Utility Rebate Program Rebate Amount $0.40/annual kWh saved (on average $800 to $1,000) Provider Ashland Electric Utilities Department The City of Ashland Conservation Division offers a solar water heating program to its residential electric customers who currently use an electric water heater. Under "The Bright Way to Heat Water Program," qualified home owners may choose either the cash rebate or a zero-interest loan. Cash rebates of up to $1,000 are available for approved systems. The rebate

110

Simulation of Microwave Brightness Temperatures of an Evolving Hailstorm at SSM/I Frequencies  

Science Conference Proceedings (OSTI)

A simulation of the appearance of an intense hailstorm in the passive microwave spectrum is conducted in order to characterize the vertical sources of radiation that contribute to the top-of-atmosphere microwave brightness temperatures (TB) which ...

Alberto Mugnai; Harry J. Cooper; Eric A. Smith; Gregory J. Tripoli

1990-01-01T23:59:59.000Z

111

A Simple Method for Testing Brightness Temperatures from Satellite Microwave Radiometers  

Science Conference Proceedings (OSTI)

A method is proposed for testing microwave measurements from spaceborne sensors by computing collocated simulated brightness temperatures from the ECMWF numerical weather meteorological model using an atmospheric radiative transfer model and the ...

J-Y. Lojou; R. Bernard; L. Eymard

1994-04-01T23:59:59.000Z

112

Direct Assimilation of AMSR-E Brightness Temperatures for Estimating Sea Ice Concentration  

Science Conference Proceedings (OSTI)

In this paper a method to directly assimilate brightness temperatures from the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) to produce ice concentration analyses within a three-dimensional variational data ...

K. Andrea Scott; Mark Buehner; Alain Caya; Tom Carrieres

2012-03-01T23:59:59.000Z

113

Climate Model–Simulated Diurnal Cycles in HIRS Clear-Sky Brightness Temperatures  

Science Conference Proceedings (OSTI)

Clear-sky brightness temperature measurements from the High-Resolution Infrared Radiation Sounder (HIRS) are simulated with two climate models via a radiative transfer code. The models are sampled along the HIRS orbit paths to derive diurnal ...

Ian A. MacKenzie; Simon F. B. Tett; Anders V. Lindfors

2012-09-01T23:59:59.000Z

114

Relationships between Evaporative Fraction and Remotely Sensed Vegetation Index and Microwave Brightness Temperature for Semiarid Rangelands  

Science Conference Proceedings (OSTI)

Measurements of the microwave brightness temperature (TB) with the Pushbroom Microwave Radiometer (PBMR) over the Walnut Gulch Experimental Watershed were made on selected days during the MONSOON 90 field campaign. The PBMR is an L-band ...

W. P. Kustas; T. J. Schmugge; K. S. Humes; T. J. Jackson; R. Parry; M. A. Weltz; M. S. Moran

1993-12-01T23:59:59.000Z

115

Power Minimization in a Backlit TFT-LCD Display by Concurrent Brightness and Contrast Scaling  

Science Conference Proceedings (OSTI)

This paper presents a Concurrent Brightness and Contrast Scaling (CBCS) technique for a cold cathode fluorescent lamp (CCFL) backlit TFT-LCD display. The proposed technique aimsat conserving power by reducing the backlight illumination while retaining ...

Wei-Chung Cheng; Yu Hou; Massoud Pedram

2004-02-01T23:59:59.000Z

116

BATSE Observations of Gamma-Ray Burst Spectra. II. Peak Energy Evolution in Bright, Long Bursts -  

E-Print Network (OSTI)

We investigate spectral evolution in 37 bright, long gamma-ray bursts observed with the BATSE Spectroscopy Detectors. High resolution spectra are characterized by the energy of the peak of \

L. A. Ford; D. L. Band; J. L. Matteson; M. S. Briggs; G. N. Pendleton; R. D. Preece; W. S. Paciesas; B. J. Teegarden; D. M. Palmer; B. E. Schaefer; T. L. Cline; G. J. Fishman; C. Kouveliotou; C. A. Meegan; R. B. Wilson; J. P. Lestrade

1994-07-27T23:59:59.000Z

117

Bright High Average Power Table-top Soft X-Ray Lasers  

Science Conference Proceedings (OSTI)

We have demonstrated the generation of bright soft x-ray laser pulses with record-high average power from compact plasma amplifiers excited by ultrafast solid state lasers. These lasers have numerous applications in nanoscience and nanotechnology.

Rocca, Jorge [Colorado State University, Fort Collins; Reagan, Brendon [Colorado State University, Fort Collins; Wernsing, Keith [Colorado State University, Fort Collins; Luther, Brad [Colorado State University, Fort Collins; Curtis, Alden [Colorado State University, Fort Collins; Nichols,, Anthony [Colorado State University, Fort Collins; Wang, Yong [Colorado State University, Fort Collins; Alessi, David [Colorado State University, Fort Collins; Martz, Dale [Colorado State University, Fort Collins; Yin, Liang [Colorado State University, Fort Collins; Wang, Shoujun [Colorado State University, Fort Collins; Berrill, Mark A [ORNL; Furch, Federico [Colorado State University, Fort Collins; Woolston, Mark [Colorado State University, Fort Collins; Patel, Dinesh [Colorado State University, Fort Collins; Marconi, Mario [Colorado State University, Fort Collins; Menoni, Carmen [Colorado State University, Fort Collins

2012-01-01T23:59:59.000Z

118

An Improved Algorithm for Generating Global Window Brightness Temperatures from Multiple Satellite Infrared Imagery  

Science Conference Proceedings (OSTI)

An improved algorithm for the generation of gridded window brightness temperatures is presented. The primary data source is the International Satellite Cloud Climatology Project, level B3 data, covering the period from July 1983 to the present. ...

K. I. Hodges; D. W. Chappell; G. J. Robinson; G. Yang

2000-10-01T23:59:59.000Z

119

Rain Retrieval from TMI Brightness Temperature Measurements Using a TRMM PR–Based Database  

Science Conference Proceedings (OSTI)

This study focuses on improving the retrieval of rain from measured microwave brightness temperatures and the capability of the retrieved field to represent the mesoscale structure of a small intense hurricane. For this study, a database is ...

Nicolas Viltard; Corinne Burlaud; Christian D. Kummerow

2006-03-01T23:59:59.000Z

120

Comparison of Infrared Atmospheric Brightness Temperatures Measured by a Fourier Transform Spectrometer and a Filter Radiometer  

Science Conference Proceedings (OSTI)

Increased interest in using atmospheric brightness temperature measurements from simple infrared radiometers combined with radars and lidars has prompted the investigation of their accuracy for various sky conditions. In comparisons of ...

Joseph A. Shaw; Jack B. Snider; James H. Churnside; Mark D. Jacobson

1995-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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.
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121

GLOBAL PROPERTIES OF M31'S STELLAR HALO FROM THE SPLASH SURVEY. I. SURFACE BRIGHTNESS PROFILE  

SciTech Connect

We present the surface brightness profile of M31's stellar halo out to a projected radius of 175 kpc. The surface brightness estimates are based on confirmed samples of M31 red giant branch stars derived from Keck/DEIMOS spectroscopic observations. A set of empirical spectroscopic and photometric M31 membership diagnostics is used to identify and reject foreground and background contaminants. This enables us to trace the stellar halo of M31 to larger projected distances and fainter surface brightnesses than previous photometric studies. The surface brightness profile of M31's halo follows a power law with index -2.2 {+-} 0.2 and extends to a projected distance of at least {approx}175 kpc ({approx}2/3 of M31's virial radius), with no evidence of a downward break at large radii. The best-fit elliptical isophotes have b/a = 0.94 with the major axis of the halo aligned along the minor axis of M31's disk, consistent with a prolate halo, although the data are also consistent with M31's halo having spherical symmetry. The fact that tidal debris features are kinematically cold is used to identify substructure in the spectroscopic fields out to projected radii of 90 kpc and investigate the effect of this substructure on the surface brightness profile. The scatter in the surface brightness profile is reduced when kinematically identified tidal debris features in M31 are statistically subtracted; the remaining profile indicates that a comparatively diffuse stellar component to M31's stellar halo exists to large distances. Beyond 90 kpc, kinematically cold tidal debris features cannot be identified due to small number statistics; nevertheless, the significant field-to-field variation in surface brightness beyond 90 kpc suggests that the outermost region of M31's halo is also comprised to a significant degree of stars stripped from accreted objects.

Gilbert, Karoline M. [Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195-1580 (United States); Guhathakurta, Puragra [UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California Santa Cruz, 1156 High Street, Santa Cruz, CA 95064 (United States); Beaton, Rachael L.; Majewski, Steven R.; Ostheimer, James C.; Patterson, Richard J. [Department of Astronomy, University of Virginia, P.O. Box 400325, Charlottesville, VA 22904-4325 (United States); Bullock, James; Tollerud, Erik J. [Center for Cosmology, Department of Physics and Astronomy, University of California at Irvine, Irvine, CA 92697 (United States); Geha, Marla C. [Astronomy Department, Yale University, New Haven, CT 06520 (United States); Kalirai, Jason S. [Space Telescope Science Institute, Baltimore, MD 21218 (United States); Kirby, Evan N. [California Institute of Technology, 1200 East California Boulevard, MC 249-17, Pasadena, CA 91125 (United States); Tanaka, Mikito; Chiba, Masashi, E-mail: kgilbert@astro.washington.edu [Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-8578 (Japan)

2012-11-20T23:59:59.000Z

122

Brightness enhancement of plasma ion source by utilizing anode spot for nano applications  

Science Conference Proceedings (OSTI)

Anode spots are known as additional discharges on positively biased electrode immersed in plasmas. The anode spot plasma ion source (ASPIS) has been investigated as a high brightness ion source for nano applications such as focused ion beam (FIB) and nano medium energy ion scattering (nano-MEIS). The generation of anode spot is found to enhance brightness of ion beam since the anode spot increases plasma density near the extraction aperture. Brightness of the ASPIS has been estimated from measurement of emittance for total ion beam extracted through sub-mm aperture. The ASPIS is installed to the FIB system. Currents and diameters of the focused beams with/without anode spot are measured and compared. As the anode spot is turned on, the enhancement of beam current is observed at fixed diameter of the focused ion beam. Consequently, the brightness of the focused ion beam is enhanced as well. For argon ion beam, the maximum normalized brightness of 12 300 A/m{sup 2} SrV is acquired. The ASPIS is applied to nano-MEIS as well. The ASPIS is found to increase the beam current density and the power efficiency of the ion source for nano-MEIS. From the present study, it is shown that the ASPIS can enhance the performance of devices for nano applications.

Park, Yeong-Shin; Lee, Yuna; Chung, Kyoung-Jae; Hwang, Y. S. [Department of Nuclear Engineering, Seoul National University, Seoul 151-742 (Korea, Republic of); Kim, Yoon-Jae [Samsung Electronics Co. Ltd., Gyeonggi 445-701 (Korea, Republic of); Park, Man-Jin [Research Institute of Nano Manufacturing System, Seoul National University of Science and Technology, Seoul 139-743 (Korea, Republic of); Moon, Dae Won [Nanobio Fusion Research Center, Korea Research Institute of Standards and Science, Daejeon 305-600 (Korea, Republic of)

2012-02-15T23:59:59.000Z

123

"No High Energy Emission" GRB Class Is Attributable to Brightness Bias  

E-Print Network (OSTI)

The inhomogeneous brightness distribution of BATSE detected gamma-ray bursts has been considered strong evidence for their cosmological origin. However, subclasses of gamma-ray bursts have been shown to have significantly more homogeneous brightness distributions. Pendleton et al. (1997) have found such a result for gamma-ray bursts with no detectable emission at energies >300 keV. Accordingly, it has been suggested that these no high energy (NHE) emission bursts represent an underluminous population of nearby sources. A distinct homogeneous NHE brightness distribution has also been considered as evidence for beaming of different spectral components of the prompt burst emission. We synthesize observed distributions of gamma-ray bursts based on a sample of typical bright BATSE bursts with intrinsic high energy emission and adopt a single cosmological distance scale for all sources. We find that the resulting synthetic NHE bursts do indeed have a more nearly homogeneous intensity distribution when an appropriate decrease in signal to noise and redshifted spectrum is incorporated. We argue that the definition of NHE bursts, and soft-spectrum bursts in general, naturally produces a steep distribution. The NHE class of gamma-ray bursts is therefore likely due to brightness bias.

J. T. Bonnell; J. P. Norris

1999-05-25T23:59:59.000Z

124

The Bright Lights in New York Could Be Solar | Department of Energy  

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

The Bright Lights in New York Could Be Solar The Bright Lights in New York Could Be Solar The Bright Lights in New York Could Be Solar September 4, 2012 - 12:29pm Addthis The NYC Solar Map allows users to estimate the solar energy potential for every building in New York City’s five boroughs. The NYC Solar Map allows users to estimate the solar energy potential for every building in New York City's five boroughs. Minh Le Minh Le Program Manager, Solar Program What is the New York City Solar Map The New York City Solar Map is an interactive online tool that allows users to estimate the solar energy potential for every building in New York City. The map also highlights existing solar installations, displays real-time solar energy production citywide, and allows users to estimate the costs, incentives, and payback period for investing in solar.

125

The Bright Lights in New York Could Be Solar | Department of Energy  

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

The Bright Lights in New York Could Be Solar The Bright Lights in New York Could Be Solar The Bright Lights in New York Could Be Solar September 4, 2012 - 12:29pm Addthis The NYC Solar Map allows users to estimate the solar energy potential for every building in New York City’s five boroughs. The NYC Solar Map allows users to estimate the solar energy potential for every building in New York City's five boroughs. Minh Le Minh Le Program Manager, Solar Program What is the New York City Solar Map The New York City Solar Map is an interactive online tool that allows users to estimate the solar energy potential for every building in New York City. The map also highlights existing solar installations, displays real-time solar energy production citywide, and allows users to estimate the costs, incentives, and payback period for investing in solar.

126

Cracking Molecular Structures with Bright Lights - and a Few Good Eggs |  

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

Cracking Molecular Structures with Bright Lights - and a Few Good Cracking Molecular Structures with Bright Lights - and a Few Good Eggs Cracking Molecular Structures with Bright Lights - and a Few Good Eggs June 22, 2012 - 11:04am Addthis This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC’s Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS. | Photo by Anton Barty/DESY This rendering shows a lysozyme structural model against its X-ray diffraction pattern from SLAC's Linac Coherent Light Source (LCLS), a powerful X-ray laser facility. Researchers have achieved high-resolution images of these simple biomolecules using advanced crystallography at LCLS.

127

SOLAR POLAR X-RAY JETS AND MULTIPLE BRIGHT POINTS: EVIDENCE FOR SYMPATHETIC ACTIVITY  

SciTech Connect

We present an analysis of X-ray bright points (BPs) and X-ray jets observed by Hinode/X-Ray Telescope on 2007 November 2-4, within the solar northern polar coronal hole. After selecting small subregions that include several BPs, we followed their brightness evolution over a time interval of a few hours, when several jets were observed. We find that most of the jets occurred in close temporal association with brightness maxima in multiple BPs: more precisely, most jets are closely correlated with the brightening of at least two BPs. We suggest that the jets result from magnetic connectivity changes that also induce the BP variability. We surmise that the jets and implied magnetic connectivity we describe are small-scale versions of the active-region-scale phenomenon, whereby flares and eruptions are triggered by interacting bipoles.

Pucci, Stefano; Romoli, Marco [Department of Physics and Astronomy, University of Firenze, Firenze (Italy); Poletto, Giannina [INAF-Arcetri Astrophysical Observatory, Firenze (Italy); Sterling, Alphonse C., E-mail: stpucci@arcetri.astro.it [Space Science Office, VP 62, Marshall Space Flight Center, Huntsville, AL 35812 (United States)

2012-02-15T23:59:59.000Z

128

The Effect of Bright Lenses in the Astrometric Measurements of MACHO Proper Motion  

E-Print Network (OSTI)

In current microlensing experiments, the information about the physical parameters of individual lenses are obtained from the Einstein timescales. However, the nature of MACHOs is still very uncertain despite the large number of detected events. This uncertainty is mainly due to the degeneracy of the lens parameters in the measured Einstein timescales. The degeneracy can be lifted in a general fashion if the angular Einstein ring radius $\\theta_{\\rm E}$, and thus the MACHO proper motion, can be measured by conducting accurate astrometric measurements of centroid displacement in the source star image. In this paper, we analyze the influence of bright lenses on the astrometric measurements of the centroid displacement and investigate this effect on the determination of $\\theta_{\\rm E}$. We find that if an event is caused by a bright lens, the centroid displacement is distorted by the flux of the lens and resulting astrometric ellipse becomes rounder and smaller with increasing lens brightness, causing an incorr...

Jeong, Y; Park, S H; Jeong, Youngjin; Han, Cheongho; Park, Sung-Hong

1998-01-01T23:59:59.000Z

129

White light emitting diode as liquid crystal display backlight; High brightness light emitting diode as liquid crystal display backlight.  

E-Print Network (OSTI)

??The discovery of high brightness (white) light emitting diode (LED) is considered as a real threat to the current lighting industry in various applications. One… (more)

Soon, Chian Myau

2007-01-01T23:59:59.000Z

130

STEM Women All-Stars Hit the Road | Department of Energy  

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

Similarly, Dr. Karina Edmonds, Technology Transfer Coordinator at the US Department of Energy, traveled to both Austin, TX and San Francisco, CA to share her story of how, as an...

131

How Many CASTLE Bulbs Would You Need To Match the Brightness of the Sun?  

E-Print Network (OSTI)

million miles), so if we were to try to build the Sun out of light bulbs, we'd need a bunch! But, how many objects: the Sun, and a CASTLE light bulb. What do we mean by "brightness?" The electromagnetic (EM radiation, while the more efficient fluorescent bulb emits only visible light. Everyone knows

Collar, Juan I.

132

The Usage of Screen-Level Parameters and Microwave Brightness Temperature for Soil Moisture Analysis  

Science Conference Proceedings (OSTI)

This study focuses on testing two different soil moisture analysis systems based on screen-level parameters (2-m temperature T2m, 2-m relative humidity RH2m) and 1.4-GHz passive microwave brightness temperatures TB. First, a simplified extended ...

G. Seuffert; H. Wilker; P. Viterbo; M. Drusch; J-F. Mahfouf

2004-06-01T23:59:59.000Z

133

Optical Sky Brightness at Cerro Tololo Inter-American Observatory from 1992 to 2006  

E-Print Network (OSTI)

We present optical UBVRI sky brightness measures from 1992 through 2006. The data are based on CCD imagery obtained with the CTIO 0.9-m, 1.3-m, and 1.5-m telescopes. The B- and V-band data are in reasonable agreement with measurements previously made at Mauna Kea, though on the basis of a small number of images per year there are discrepancies for the years 1992 through 1994. Our CCD-based data are not significantly different than values obtained at Cerro Paranal. We find that the yearly averages of V-band sky brightness are best correlated with the 10.7-cm solar flux taken 5 days prior to the sky brightness measures. This implies an average speed of 350 km/sec for the solar wind. While we can measure an enhancement of the night sky levels over La Serena 10 degrees above the horizon, at elevation angles above 45 degrees we find no evidence that the night sky brightness at Cerro Tololo is affected by artificial light of nearby towns and cities.

Krisciunas, Kevin; Sanhueza, Pedro; Schwarz, Hugo E; Semler, Dylan R; Suntzeff, Nicholas B; Vera, Sergio

2007-01-01T23:59:59.000Z

134

BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS  

SciTech Connect

If double neutron star mergers leave behind a massive magnetar rather than a black hole, then a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB)-GWB association or if there is an association but the SGRB does not beam toward Earth. Besides directly dissipating the proto-magnetar wind, as suggested by Zhang, here we suggest that the magnetar wind could push the ejecta launched during the merger process and, under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broadband afterglow due to synchrotron radiation. We study this physical scenario in detail and present the predicted X-ray, optical, and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical light curves usually peak around the magnetar spin-down timescale ({approx}10{sup 3}-10{sup 5} s), reaching brightnesses readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broadband afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equations of state for nuclear matter.

Gao He; Ding Xuan; Wu Xuefeng [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Zhang Bing [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States); Dai Zigao, E-mail: xfwu@pmo.ac.cn, E-mail: zhang@physics.unlv.edu, E-mail: dzg@nju.edu.cn [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

2013-07-10T23:59:59.000Z

135

Bright broad-band afterglows of gravitational wave bursts from mergers of binary neutron stars  

E-Print Network (OSTI)

If double neutron star mergers leave behind a massive magnetar rather than a black hole, a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB) - GWB association or there is an association but the SGRB does not beam towards earth. Besides directly dissipating the proto-magnetar wind as suggested by Zhang, we here suggest that the magnetar wind could push the ejecta launched during the merger process, and under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broad-band afterglow due to synchrotron radiation. We study this physical scenario in detail, and present the predicted X-ray, optical and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical lightcurves usually peak around the magnetar spindown time scale (10^3-10^5s), reaching brightness readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broad-band afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equation-of-state for nuclear matter.

He Gao; Xuan Ding; Xue-Feng Wu; Bing Zhang; Zi-Gao Dai

2013-01-03T23:59:59.000Z

136

High-brightness beamline for X-ray spectroscopy at the Advanced Light Source  

SciTech Connect

Beamline 9.3.1 at the Advanced Light Source (ALS) is a windowless beamline, covering the 1-6 keV photon-energy range, designed to achieve the goals of high energy resolution, high flux, and high brightness at the sample. When completed later this year, it will be the first ALS monochromatic hard-x-ray beamline, and its brightness will be an order-of-magnitude higher than presently available in this energy range. In addition, it will provide flux and resolution comparable to any other beamline now in operation. To achieve these goals, two technical improvements, relative to existing x-ray beamlines, were incorporated. First, a somewhat novel optical design for x-rays, in which matched toroidal mirrors are positioned before and after the double-crystal monochromator, was adopted. This configuration allows for high resolution by passing a collimated beam through the monochromator, and for high brightness by focusing the ALS source on the sample with unit magnification. Second, a new ''Cowan type'' double-crystal monochromator based on the design used at NSLS beamline X-24A was developed. The measured mechanical precision of this new monochromator shows significant improvement over existing designs, without using positional feedback available with piezoelectric devices. Such precision is essential because of the high brightness of the radiation and the long distance (12m) from the source (sample) to the collimating (focusing) mirror. This combination of features will provide a bright, high resolution, and stable x-ray beam for use in the x-ray spectroscopy program at the ALS.

Perera, R.C.C.; Jones, G. [Lawrence Berkeley Lab., CA (US); Lindle, D.W. [Univ. of Nevada, Las Vegas, NV (US). Dept. of Chemistry

1994-08-01T23:59:59.000Z

137

SWIFT PANCHROMATIC OBSERVATIONS OF THE BRIGHT GAMMA-RAY BURST GRB 050525a A. J. Blustin,1  

E-Print Network (OSTI)

SWIFT PANCHROMATIC OBSERVATIONS OF THE BRIGHT GAMMA-RAY BURST GRB 050525a A. J. Blustin,1 D. Band,2 ABSTRACT The bright gamma-ray burst GRB 050525a has been detected with the Swift observatory, providing. This jet break time combined with the total gamma-ray energy of the burst constrains the opening angle

Zhang, Bing

138

Climatological Diurnal Cycles in Clear-Sky Brightness Temperatures from the High-Resolution Infrared Radiation Sounder (HIRS)  

Science Conference Proceedings (OSTI)

A climatology of the diurnal cycles of HIRS clear-sky brightness temperatures was developed based on measurements over the period 2002–07. This was done by fitting a Fourier series to monthly gridded brightness temperatures of HIRS channels 1–12. ...

Anders V. Lindfors; Ian A. Mackenzie; Simon F. B. Tett; Lei Shi

2011-10-01T23:59:59.000Z

139

NREL: Technology Transfer - NREL and SkyFuel Partnership Reflects Bright  

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

NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy In this video, NREL Principal Scientist Gary Jorgensen and SkyFuel Chief Technology Officer Randy Gee talk about their partnership to develop a thin film to substitute for bulkier glass mirrors on solar-collecting parabolic troughs. Get the Adobe Flash Player to see this video. Credit: Fireside Production More Information For more information about NREL's partnership with SkyFuel, read Award-Winning Reflector to Cut Solar Cost and New Solar Technology Concentrates on Cost, Efficiency. Learn more about NREL's Concentrating Solar Power Research. Printable Version Technology Transfer Home About Technology Transfer Technology Partnership Agreements Licensing Agreements Nondisclosure Agreements Research Facilities

140

Bright Young Minds for a Clean Energy Future | Department of Energy  

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

Young Minds for a Clean Energy Future Young Minds for a Clean Energy Future Bright Young Minds for a Clean Energy Future August 16, 2011 - 12:11pm Addthis Bright Young Minds for a Clean Energy Future Sarah Jane Maxted Special Assistant, Office of Energy Efficiency & Renewable Energy How can I participate? Registration begins August 15 and ends on October 7, 2011. Students are encouraged to register with their teachers by September 30, 2011 to take advantage of the full energy savings period. It's that time again: Back to school season is officially here! Time for students to prepare for the new experiences and challenges that they will encounter throughout the upcoming school year. One such challenge-from the Energy Department in partnership with the National Science Teachers Association (NSTA)-aims to tap into the

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


141

The Stability of Low Surface Brightness Disks Based on Multi-Wavelength Modeling  

E-Print Network (OSTI)

To investigate the structure and composition of the dusty interstellar medium (ISM) of low surface brightness (LSB) disk galaxies, we have used multiwavelength photometry to construct spectral energy distributions for three low-mass, edge-on LSB galaxies. We use Monte Carlo radiation transfer codes that include the effects of transiently heated small grains and polycyclic aromatic hydrocarbon molecules to model and interpret the data. We find that unlike the high surface brightness galaxies previously modeled, the dust disks appear to have scale heights equal to or exceeding their stellar scale heights. This result supports the findings of previous studies that low mass disk galaxies have dust scale heights comparable to their stellar scale heights and suggests that the cold ISM of low mass, LSB disk galaxies may be stable against fragmentation and gravitational collapse. This may help to explain the lack of observed dust lanes in edge-on LSB galaxies and their low current star formation rates.

MacLachlan, John M; Wood, Kenneth; Gallagher, John S

2011-01-01T23:59:59.000Z

142

Stability studies of nanosecond light sources based on blue ultra bright LEDs  

E-Print Network (OSTI)

We present the results of stability studies of nanosecond light sources based on single quantum well (SQW) InGaN/GaN ultra bright blue LEDs. It is shown that the light yield of such light sources and their timing characteristics don't deteriorate even after 10^10 total pulses. The longterm stability of the sources light yield is better than 1%.

Lubsandorzhiev, B K

2004-01-01T23:59:59.000Z

143

Stability studies of nanosecond light sources based on blue ultra bright LEDs  

E-Print Network (OSTI)

We present the results of stability studies of nanosecond light sources based on single quantum well (SQW) InGaN/GaN ultra bright blue LEDs. It is shown that the light yield of such light sources and their timing characteristics don't deteriorate even after 10^10 total pulses. The longterm stability of the sources light yield is better than 1%.

B. K. Lubsandorzhiev; Y. E. Vyatchin

2004-03-01T23:59:59.000Z

144

OPTICS FOR HIGH BRIGHTNESS AND HIGH CURRENT ERL PROJECT AT BNL.  

SciTech Connect

An energy recovery linac (ERL), under development at Brookhaven National Laboratory [1,2], will push ERLs further towards high current and high brightness beams. This R&D ERL will operate in two modes: a high current mode and a high charge mode. In this paper we present a lattice of the machine and PARMELA simulations from the cathode to the beam dump. We discuss the design considerations and present main parameters for various modes of operation.

KAYRAN, D.; BEN-ZVI, I.; CALAGA, R.; CHANG, X.Y.; ET AL.

2005-05-16T23:59:59.000Z

145

Plasmon-enhanced photocathode for high brightness and high repetition rate x-ray sources  

SciTech Connect

High brightness electron sources are at the heart of anew generation of x-ray sources based on the Free ElectronLaser (FEL) as well as in Energy Recovery Linac (ERL) and Inverse Compton Scattering (ICS) sources.The source of electrons consists of a photoinjector, comprised of a laser-driven photocathode in a high gradient electric field produced by an rf cavity. The function of the rf cavity is to provide a field sufficient for acceleration of electrons to relativistic velocity over a small distance, thus minimizing effects of the space-charge. Even so, the dense electron beam required for high brightness suffers from a space charge field that chirps and reshapes the electron pulse increasing beam emittance and thus reducing the overall brightness. This emittance growth can be avoided if the initial distribution of electrons is pancake shaped, with a semicircular transverse intensity profile. In this case, the electron distribution develops under its space charge field from a pancake into a uniformly filled ellipsoidal beam. This condition, referred to as the blowout regime, requires ultrashort pulses less than 100 fs long and has been successfully demonstrated recently in a high gradient photoinjector.

Polyakov, Aleksandr; Senft, Christoph; Thompson, K. F.; Feng, J.; Cabrini, S.; Schuck, P. J.; Padmore, Howard; Peppernick, Samuel J.; Hess, Wayne P.

2013-02-11T23:59:59.000Z

146

Evaluation of Model-generated Cloudiness: Satellite-observed and Model-generated Diurnal Variability of Brightness Temperature  

Science Conference Proceedings (OSTI)

In an attempt to validate the ECMWF model’s cloudiness, model output has been processed to reproduce satellite measurements as closely as possible. Brightness temperatures in the longwave window channel of Meteosat are simulated from cloudiness, ...

Jean-Jacques Morcrette

1991-05-01T23:59:59.000Z

147

Simulations of the Effects of Water Vapor, Cloud Liquid Water, and Ice on AMSU Moisture Channel Brightness Temperatures  

Science Conference Proceedings (OSTI)

Radiative transfer simulations are performed to determine how water vapor and nonprecipitating cloud liquid water and ice particles within typical midlatitude atmospheres affect brightness temperatures TB's of moisture sounding channels used in ...

Bradley M. Muller; Henry E. Fuelberg; Xuwu Xiang

1994-10-01T23:59:59.000Z

148

Raindrop Size Distributions and Rain Characteristics in California Coastal Rainfall for Periods with and without a Radar Bright Band  

Science Conference Proceedings (OSTI)

Recent studies using vertically pointing S-band profiling radars showed that coastal winter storms in California and Oregon frequently do not display a melting-layer radar bright band and inferred that these nonbrightband (NBB) periods are ...

Brooks E. Martner; Sandra E. Yuter; Allen B. White; Sergey Y. Matrosov; David E. Kingsmill; F. Martin Ralph

2008-06-01T23:59:59.000Z

149

Microwave Emission Brightness Temperature Histograms (METH) Rain Rates for Climate Studies: Remote Sensing Systems SSM/I Version-6 Results  

Science Conference Proceedings (OSTI)

A satellite microwave emission brightness temperature histograms (METH) technique has been applied to Special Sensor Microwave Imager (SSM/I) data taken on board the Defense Meteorological Satellite Program (DMSP) satellites and preprocessed by ...

Long S. Chiu; Roongroj Chokngamwong

2010-01-01T23:59:59.000Z

150

An Integrated Framework for a Joint Assimilation of Brightness Temperature and Soil Moisture Using the Nondominated Sorting Genetic Algorithm II  

Science Conference Proceedings (OSTI)

This study has applied the Nondominated Sorting Genetic Algorithm II (NSGA-II) in a two-step assimilation procedure to jointly assimilate brightness temperature into a radiative transfer model and soil moisture into a land surface model. The first ...

Gift Dumedah; Aaron A. Berg; Mark Wineberg

2011-12-01T23:59:59.000Z

151

Analysis of Upper-Tropospheric Water Vapor Brightness Temperatures from SSM/T2, HIRS, and GMS-5 VISSR  

Science Conference Proceedings (OSTI)

Satellite microwave and infrared instruments sensitive to upper-tropospheric water vapor (UTWV) are compared using both simulated and observed cloud-cleared brightness temperatures (Tb’s). To filter out cloudy scenes, a cloud detection algorithm ...

Wesley Berg; John J. Bates; Darren L. Jackson

1999-05-01T23:59:59.000Z

152

Flying on Sun Shine: Sailing in Space  

SciTech Connect

On January 20th, 2011, NanoSail-D successfully deployed its sail in space. It was the first solar sail vehicle to orbit the earth and the second sail ever unfurled in space. The 10m2 sail, deployment mechanism and electronics were packed into a 3U CubeSat with a volume of about 3500cc. The NanoSail-D mission had two objectives: eject a nanosatellite from a minisatellite; deploy its sail from a highly compacted volume to validate large structure deployment and potential de-orbit technologies. NanoSail-D was jointly developed by NASA's Marshall Space Flight Center and Ames Research Center. The ManTech/NeXolve Corporation provided key sail design support. NanoSail-D is managed by Marshall and jointly sponsored by the Army Space and Missile Defense Command, the Space Test Program, the Von Braun Center for Science and Innovation and Dynetics Inc. The presentation will provide insights into sailcraft advances and potential missions enabled by this emerging in-space propulsion technology.

Alhorn, Dean (NASA, Marshall Space Flight Center)

2012-03-28T23:59:59.000Z

153

EBIT Shines New Light on Nuclear Fusion  

Science Conference Proceedings (OSTI)

... of highly ionized particles in nuclear fusion reactors ... researchers recently confirmed a theory which predicted ... lead to more efficient energy production ...

154

Feature - Transportation Technologies Shine at Argonne's Open...  

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

a reality. Exhibits TTRDC visitors were able to See and smell clean diesel fuel made from wood, coal, and yard waste; Examine shredder residue from recycled automobiles such as...

155

Neutron Spectral Brightness of Cold Guide 4 at the High Flux Isotope Reactor  

DOE Green Energy (OSTI)

The High Flux Isotope Reactor resumed operation in June of 2007 with a super-critical hydrogen cold source in horizontal beam tube 4. Cold guide 4 is a guide system designed to deliver neutrons from this source at reasonable flux at wavelengths greater than 4 Å to several instruments, and includes a 15-m, 96-section, 4-channel bender. A time-of-flight spectrum with calibrated detector was recorded at port C of cold guide 4, and compared to McStas simulations, to generate a brightness spectrum.

Winn,B.L.; Robertson, J.L.; Iverson, E.B.; Selby, D.L.

2009-05-03T23:59:59.000Z

156

Sliding Mode Pulsed Averaging IC Drivers for High Brightness Light Emitting Diodes  

SciTech Connect

This project developed new Light Emitting Diode (LED) driver ICs associated with specific (uniquely operated) switching power supplies that optimize performance for High Brightness LEDs (HB-LEDs). The drivers utilize a digital control core with a newly developed nonlinear, hysteretic/sliding mode controller with mixed-signal processing. The drivers are flexible enough to allow both traditional microprocessor interface as well as other options such as “on the fly” adjustment of color and brightness. Some other unique features of the newly developed drivers include • AC Power Factor Correction; • High power efficiency; • Substantially fewer external components should be required, leading to substantial reduction of Bill of Materials (BOM). Thus, the LED drivers developed in this research : optimize LED performance by increasing power efficiency and power factor. Perhaps more remarkably, the LED drivers provide this improved performance at substantially reduced costs compared to the present LED power electronic driver circuits. Since one of the barriers to market penetration for HB-LEDs (in particular “white” light LEDs) is cost/lumen, this research makes important contributions in helping the advancement of SSL consumer acceptance and usage.

Dr. Anatoly Shteynberg, PhD

2006-08-17T23:59:59.000Z

157

Rotationally-induced asymmetry in the double-peak lightcurves of the bright EGRET pulsars?  

E-Print Network (OSTI)

Pulsed emission from the bright EGRET pulsars - Vela, Crab, and Geminga - extends up to 10 GeV. The generic gamma lightcurve features two peaks separated by 0.4 to 0.5 in phase. According to Thompson (2001) the lightcurve becomes asymmetrical above 5 GeV in such a way that the trailing peak dominates over the leading peak. We attempt to interpret this asymmetry within a single-polar-cap scenario. We investigate the role of rotational effects on the magnetic one-photon absorption rate in inducing such asymmetry. Our Monte Carlo simulations of pulsar gamma-ray beams reveal that in the case of oblique rotators with rotation periods of a few millisecond the rotational effects lead to the asymmetry of the requested magnitude. However, the rotators relevant for the bright EGRET pulsars must not have their inclination angles too large in order to keep the two peaks at a separation of 0.4 in phase. With such a condition imposed on the model rotators the resulting effects are rather minute and can hardly be reconciled with the magnitude of the observed asymmetry.

J. Dyks; B. Rudak

2001-06-05T23:59:59.000Z

158

Positron-diffraction experiments with a brightness-enhanced slow positron beam  

Science Conference Proceedings (OSTI)

The construction of a high brightness slow positron beam has enabled us to extend Low Energy Positron Diffraction (LEPD) measurements well beyond the previously accessible range of energies. Details of the design and construction of this beam, which utilizes two stages of reflection remoderation for a 500-fold increase in brightness-per-volt, are presented, with emphasis on the positron optics. The positron beam is maintained in an ultra-high vacuum environment. This, together with the inclusion of facilities for display LEED and Auger Electron Spectroscopy, make the apparatus well suited for surface studies. Two sets of experiments performed with this new apparatus are described. Measurements of the specularly diffracted intensity from Cu(001) and Cu(111) single crystals show large peaks in the previously inaccessible 10-30 volt range. These peaks are well displaced from the kinematic Bragg positions and may be influenced by the emergence of non-specular diffraction beams, but the sharp series of features characteristic of beam threshold effects has not been observed. In the second set of experiments neutral positronium atom production is measured as a function of incident positron energy. The observed positronium production is correlated to the intensity vs. energy spectrum for diffracted positrons, suggesting that positronium formation is an important channel for elastically scattered positrons. The angular distribution of positronium formed changes with incident beam energy and may contain information on the details of the potential in the surface region.

Lippel, P.H.

1988-01-01T23:59:59.000Z

159

Much Ado about Microbunching: Coherent Bunching in High Brightness Electron Beams  

Science Conference Proceedings (OSTI)

The push to provide ever brighter coherent radiation sources has led to the creation of correspondingly bright electron beams. With billions of electrons packed into normalized emittances (phase space) below one micron, collective effects may dominate both the preservation and use of such ultra-bright beams. An important class of collective effects is due to density modulations within the bunch, or microbunching. Microbunching may be deleterious, as in the case of the Microbunching Instability (MBI), or it may drive radiation sources of unprecedented intensity, as in the case of Free Electron Lasers (FELs). In this work we begin by describing models of microbunching due to inherent beam shot noise, which sparks both the MBI as well as SLAC's Linac Coherent Light Source, the world's first hard X-ray laser. We first use this model to propose a mechanism for reducing the inherent beam shot noise as well as for predicting MBI effects. We then describe experimental measurements of the resulting microbunching at LCLS, including optical radiation from the MBI, as well as the first gain length and harmonic measurements from a hard X-ray FEL. In the final chapters, we describe schemes that use external laser modulations to microbunch light sources of the future. In these sections we describe coherent light source schemes for both both linacs and storage rings.

Ratner, Daniel; /Stanford U. /SLAC

2012-05-25T23:59:59.000Z

160

Can gas in young debris disks be constrained by their radial brightness profiles?  

E-Print Network (OSTI)

Disks around young stars are known to evolve from optically thick, gas-dominated protoplanetary disks to optically thin, almost gas-free debris disks. It is thought that the primordial gas is largely removed at ages of ~10 Myr, but it is difficult to discern the true gas densities from gas observations. This suggests using observations of dust: it has been argued that gas, if present with higher densities, would lead to flatter radial profiles of the dust density and surface brightness than those actually observed. However, here we show that these profiles are surprisingly insensitive to variation of the parameters of a central star, location of the dust-producing planetesimal belt, dustiness of the disk and - most importantly - the parameters of the ambient gas. This result holds for a wide range of gas densities (three orders of magnitude), for different radial distributions of the gas temperature, and different gas compositions. The brightness profile slopes of -3...-4 we find are the same that were theore...

Krivov, Alexander V; Brandeker, Alexis; Thébault, Philippe

2009-01-01T23:59:59.000Z

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161

XMM-Newton observations of the Perseus Cluster I: The temperature and surface brightness structure  

E-Print Network (OSTI)

We present preliminary results of the XMM-Newton 50 ksec observation of the Perseus cluster. The global east/west asymmetry of the gas temperature and surface brightness distributions, approximately aligned with the chain of bright galaxies, suggests an ongoing merger, although the modest degree of the observed asymmetry certainly excludes a major merger interpretation. The chain of galaxies probably traces the filament along which accretion has started some time ago and is continuing at the present time. A cold and dense (low entropy) cluster core like Perseus is probably well "protected" against the penetration of the gas of infalling groups and poor clusters whereas in non-cooling core clusters like Coma and A1367, infalling subclusters can penetrate deeply into the core region. In Perseus, gas associated with infalling groups may be stripped completely at the outskirts of the main cluster and only compression waves (shocks) may reach the central regions. We argue that the passage of such a wave(s) can qualitatively explain the overall horseshoe shaped appearance of the gas temperature map (the hot horseshoe surrounds the colder, low entropy core) as well as other features of the Perseus cluster core. As compression waves traverse the cluster core, they can induce oscillatory motion of the cluster gas which can generate multiple sharp "edges", on opposite sides or the central galaxy. Gas motions induced by mergers may be a natural way to explain the high frequency of "edges" seen in clusters with cooling cores.

E. Churazov; W. Forman; C. Jones; H. Böhringer

2003-01-23T23:59:59.000Z

162

The Dark Bursts population in a complete sample of bright Swift Long Gamma-Ray Bursts  

E-Print Network (OSTI)

We study the properties of the population of optically dark events present in a carefully selected complete sample of bright Swift long gamma-ray bursts. The high level of completeness in redshift of our sample (52 objects out of 58) allow us to establish the existence of a genuine dark population and we are able to estimate the maximum fraction of dark burst events (~30%) expected for the whole class of long gamma-ray burst. The redshift distribution of this population of dark bursts is similar to the one of the whole sample. Interestingly, the rest-frame X-ray luminosity (and the de-absorbed X-ray flux) of the sub-class of dark bursts is slightly higher than the average luminosity of the non-dark events. At the same time the prompt properties do not differ and the optical flux of dark events is at the lower tail of the optical flux distribution, corrected for Galactic absorption. All these properties suggest that dark bursts events generate in much denser environments with respect to normal bright events. We can therefore exclude the high-z and the low-density scenarios and conclude that the major cause of the origin of optically dark events is the dust extinction.

A. Melandri; B. Sbarufatti; P. D'Avanzo; R. Salvaterra; S. Campana; S. Covino; S. D. Vergani; L. Nava; G. Ghisellini; G. Ghirlanda; D. Fugazza; V. Mangano; M. Capalbi; G. Tagliaferri

2011-12-19T23:59:59.000Z

163

The melting layer: The radar bright band is dark for lidar  

E-Print Network (OSTI)

Measurements of the melting layer were made with radar and lidar, during light rain. At the height at which a weather radar sees a bright band, the backscatter from the lidar has a minimum. Sometimes this minimum is more than 20 dB deep relative to the rain underneath. In this paper the measurements will be analysed in detail. Five mechanisms that can contribute to this effect are discussed: 1. Refractive index change during melting; 2. Aggregation and breakup; 3. Structural collapse of the melting snowflake; 4. Enhanced vertical backscatter of water droplets; 5. The orientation and shape of the melting crystals. Keywords: radar, cloud radar, lidar, melting layer, orientation of crystals. 1. Introduction In the Netherlands stratiform rain is mainly produced by the melting of ice particles into rain droplets. Normally this happens in a well-defined layer, just below the zero degree level. This melting layer is characterised by high radar reflections, the so-called bright band. This b...

V. K. C. Venema; H. W. J. Russchenberg; A van Lammeren; A. Apituley; L.P. Ligthart; Royal Netherl; S Meteorological Organisation

1998-01-01T23:59:59.000Z

164

ARM: G-band (183 GHz) Vapor Radiometer profiler: 15 microwave brightness temperatures from 170.0 to 183.3 GHz  

DOE Data Explorer (OSTI)

G-band (183 GHz) Vapor Radiometer profiler: 15 microwave brightness temperatures from 170.0 to 183.3 GHz

Maria Cadeddu

165

New Family of Tiny Crystals Glow Bright in LED Lights | Advanced Photon  

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

How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine How Serotonin Receptors Can Shape Drug Effects, from LSD to Migraine Medication X-rays Paint a Picture of Picasso's Pigments Antibody Evolution Could Guide HIV Vaccine Development Blue Ruthenium Dimer Catalysis for Hydrogen Generation A High-Pressure Nano-imaging Breakthrough Science Highlights Archives: 2013 | 2012 | 2011 | 2010 2009 | 2008 | 2007 | 2006 2005 | 2004 | 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed New Family of Tiny Crystals Glow Bright in LED Lights JUNE 7, 2013 Bookmark and Share Laue microdiffraction pattern acquired from a nanoribbon in experiments at the APS. Minuscule crystals that glow different colors may be the missing ingredient for white light-emitting diode (LED) lighting that illuminates homes and

166

A bright point source of ultrashort hard x-rays from laser bioplasmas  

E-Print Network (OSTI)

Micro and nano structures scatter light and amplify local electric fields very effectively. Energy incident as intense ultrashort laser pulses can be converted to x-rays and hot electrons more efficiently with a substrate that suitably modifies the local fields. Here we demonstrate that coating a plain glass surface with a few micron thick layer of an ubiquitous microbe, {\\it Escherichia coli}, catapults the brightness of hard x-ray bremsstrahlung emission (up to 300 keV) by more than two orders of magnitude at an incident laser intensity of 10$^{16}$ W cm$^{-2}$. This increased yield is attributed to the local enhancement of electric fields around individual {\\it E. coli} cells and is reproduced by detailed particle-in-cell (PIC) simulations. This combination of laser plasmas and biological targets can lead to turnkey, multi-kilohertz and environmentally safe sources of hard x-rays.

Krishnamurthy, M; Lad, Amit D; Ahmad, Saima; Narayanan, V; Rajeev, R; Kundu, M; Kumar, G Ravindra; Ray, Krishanu

2010-01-01T23:59:59.000Z

167

RESPONSE OF GRANULATION TO SMALL-SCALE BRIGHT FEATURES IN THE QUIET SUN  

SciTech Connect

We detected 2.8 bright points (BPs) per Mm{sup 2} in the quiet Sun with the New Solar Telescope at Big Bear Solar Observatory, using the TiO 705.68 nm spectral line at an angular resolution {approx}0.''1 to obtain a 30 minute data sequence. Some BPs formed knots that were stable in time and influenced the properties of the granulation pattern around them. The observed granulation pattern within {approx}3'' of knots presents smaller granules than those observed in a normal granulation pattern, i.e., around the knots a suppressed convection is detected. Observed BPs covered {approx}5% of the solar surface and were not homogeneously distributed. BPs had an average size of 0.''22, they were detectable for 4.28 minutes on average, and had an averaged contrast of 0.1% in the deep red TiO spectral line.

Andic, A.; Chae, J.; Goode, P. R.; Cao, W.; Ahn, K.; Yurchyshyn, V.; Abramenko, V. [Big Bear Solar Observatory, 40398 North Shore Lane, Big Bear City, CA 92314 (United States)

2011-04-10T23:59:59.000Z

168

High brightness--multiple beamlets source for patterned X-ray production  

DOE Patents (OSTI)

Techniques for controllably directing beamlets to a target substrate are disclosed. The beamlets may be either positive ions or electrons. It has been shown that beamlets may be produced with a diameter of 1 .mu.m, with inter-aperture spacings of 12 .mu.m. An array of such beamlets, may be used for maskless lithography. By step-wise movement of the beamlets relative to the target substrate, individual devices may be directly e-beam written. Ion beams may be directly written as well. Due to the high brightness of the beamlets from extraction from a multicusp source, exposure times for lithographic exposure are thought to be minimized. Alternatively, the beamlets may be electrons striking a high Z material for X-ray production, thereafter collimated to provide patterned X-ray exposures such as those used in CAT scans. Such a device may be used for remote detection of explosives.

Leung, Ka-Ngo (Hercules, CA); Ji, Qing (Albany, CA); Barletta, William A. (Oakland, CA); Jiang, Ximan (El Cerrito, CA); Ji, Lili (Albany, CA)

2009-10-27T23:59:59.000Z

169

Charge Trapping in Bright and Dark States of Coupled PbS Quantum Dot Films  

DOE Green Energy (OSTI)

Analysis of photoluminescence (PL) from chemically treated lead sulfide (PbS) quantum dot (QD) films versus temperature reveals the effects of QD size and ligand binding on the motion of carriers between bright and dark trap states. For strongly coupled QDs, the PL exhibits temperature-dependent quenching and shifting consistent with charges residing in a shallow exponential tail of quasi-localized states below the band gap. The depth of the tail varies from 15 to 40 meV, similar to or smaller than exponential band tail widths measured for polycrystalline Si. The trap state distribution can be manipulated with QD size and surface treatment, and its characterization should provide a clearer picture of charge separation and percolation in disordered QD films than what currently exists.

Gao, J.; Johnson, J. C.

2012-04-24T23:59:59.000Z

170

AN EXPONENTIAL DECLINE AT THE BRIGHT END OF THE z = 6 GALAXY LUMINOSITY FUNCTION  

SciTech Connect

We present the results of a search for the most luminous star-forming galaxies at redshifts z Almost-Equal-To 6 based on Canada-France-Hawaii Telescope Legacy Survey data. We identify a sample of 40 Lyman break galaxies (LBGs) brighter than magnitude z' = 25.3 across an area of almost 4 deg{sup 2}. Sensitive spectroscopic observations of seven galaxies provide redshifts for four, of which only two have moderate to strong Ly{alpha} emission lines. All four have clear continuum breaks in their spectra. Approximately half of the LBGs are spatially resolved in 0.7 arcsec seeing images, indicating larger sizes than lower luminosity galaxies discovered with the Hubble Space Telescope, possibly due to ongoing mergers. The stacked optical and infrared photometry is consistent with a galaxy model with stellar mass {approx}10{sup 10} M{sub Sun }. There is strong evidence for substantial dust reddening with a best-fit A{sub V} = 0.75 and A{sub V} > 0.48 at 2{sigma} confidence, in contrast to the typical dust-free galaxies of lower luminosity at this epoch. The spatial extent and spectral energy distribution suggest that the most luminous z Almost-Equal-To 6 galaxies are undergoing merger-induced starbursts. The luminosity function of z = 5.9 star-forming galaxies is derived. This agrees well with previous work and shows strong evidence for an exponential decline at the bright end, indicating that the feedback processes that govern the shape of the bright end are occurring effectively at this epoch.

Willott, Chris J. [Herzberg Institute of Astrophysics, National Research Council, 5071 West Saanich Rd, Victoria, BC V9E 2E7 (Canada); McLure, Ross J.; Bruce, Victoria A. [SUPA Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ (United Kingdom); Hibon, Pascale [Gemini Observatory, Gemini South, AURA/Chile, P.O. Box 26732, Tucson, AZ 85726 (United States); Bielby, Richard [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom); McCracken, Henry J. [Institut d'Astrophysique de Paris, UMR7095 CNRS, Universite Pierre et Marie Curie, 98 bis Boulevard Arago, F-75014 Paris (France); Kneib, Jean-Paul; Ilbert, Olivier [Laboratoire d'Astrophysique de Marseille, Universite Aix-Marseille, 38 Rue Frederic Joliot-Curie, F-13388 Marseille (France); Bonfield, David G.; Jarvis, Matt J., E-mail: chris.willott@nrc.ca [Centre for Astrophysics, Science and Technology Research Institute, University of Hertfordshire, Hatfield, Herts AL10 9AB (United Kingdom)

2013-01-01T23:59:59.000Z

171

Microwave Radiometer Calibration on Decadal Time Scales Using On-Earth Brightness Temperature References: Application to the TOPEX Microwave Radiometer  

Science Conference Proceedings (OSTI)

A method is described to calibrate a satellite microwave radiometer operating near 18–37 GHz on decadal time scales for the purposes of climate studies. The method uses stable on-earth brightness temperature references over the full dynamic range ...

Shannon Brown; Shailen Desai; Stephen Keihm; Wenwen Lu

2009-12-01T23:59:59.000Z

172

Correlations of whitecap coverage and gas transfer velocity with microwave brightness temperature for plunging and spilling breaking waves  

DOE Green Energy (OSTI)

Bubbles and bubble plumes generated by wind-induced breaking waves significantly enhance the gas exchange across the interface between the ocean and atmosphere under high-wind conditions. Whitcaps, or active spilling wave crests, are the sea-surface manifestation of the bubbles and bubble plumes in the subsurface mixed layer, and the fractional area of the sea surface covered by which has been proposed to correlate linearly with the air-sea gas transfer velocity. The presence of whitecaps substantially increases the microwave brightness temperature of the sea surface. It could be possible to estimate the whitecap coverage from the sea-surface microwave brightness temperature would also be very helpful in developing a remote-sensing model for predicting air-sea gas transfer velocities from microwave brightness temperatures. As a part of an air-water gas exchange experiment conducted in an outdoor surf pool, measurements were made that were designed to investigate the correlation between whitecap coverage and microwave brightness temperature. A mechanical wave maker was located at the deep end of the pool and the generated waves propagate and break towards the shallow end of the pool. Two wave patterns characteristic of plunging and spilling breaking waves at four wave heights from 0.3 m to 1.2 m were produced.

Wang, Qin; Monahan, E.C. [Connecticut Univ., Groton, CT (United States). Marine Sciences Inst.; Asher, W.E. [Battelle/Marine Sciences Lab., Sequim, WA (United States); Smith, P.M. [Naval Research Lab. Detachment, Stennis Space Center, MS (United States)

1995-07-01T23:59:59.000Z

173

A Climatology of Warm-Season Cloud Patterns over East Asia Based on GMS Infrared Brightness Temperature Observations  

Science Conference Proceedings (OSTI)

In the present study, hourly infrared (IR) brightness temperatures observed by the Geostationary Meteorological Satellite (GMS) over the region 20°–40°N, 95°–145°E in May–August 1998–2001 are used to compile a climatology of warm-season cloud/...

Chung-Chieh Wang; George Tai-Jen Chen; Richard E. Carbone

2004-07-01T23:59:59.000Z

174

The XMM-Newton bright serendipitous survey. Identification and optical spectral properties  

E-Print Network (OSTI)

AIMS: We present the optical classification and redshift of 348 X-ray selected sources from the XMM-Newton Bright Serendipitous Survey (XBS) which contains a total of 400 objects (identification level = 87%). About 240 are new identifications. In particular, we discuss in detail the classification criteria adopted for the Active Galactic Nuclei population. METHODS: By means of systematic spectroscopic campaigns and through the literature search we have collected an optical spectrum for the large majority of the sources in the XBS survey and applied a well-defined classification ``flow-chart''. RESULTS: We find that the AGN represent the most numerous population at the flux limit of the XBS survey (~10^-13 erg cm^-2 s^-1) constituting 80% of the XBS sources selected in the 0.5-4.5 keV energy band and 95% of the ``hard'' (4.5-7.5 keV) selected objects. Galactic sources populate significantly the 0.5-4.5 keV sample (17%) and only marginally (3%) the 4.5-7.5 keV sample. The remaining sources in both samples are c...

Caccianiga, A; Della Ceca, R; MacCacaro, T; Cocchia, F; Barcons, X; Carrera, F J; Matute, I; McMahon, R G; Page, M J; Pietsch, W; Sbarufatti, B; Schwope, A; Tedds, J A; Watson, M G

2007-01-01T23:59:59.000Z

175

Application of the Eigen-Emittance Concept to Design Ultra-Bright Electron Beams  

SciTech Connect

Using correlations at the cathode to tailor a beam's eigen-emittances is a recent concept made useful by the symplectic nature of Hamiltonian systems such as beams in accelerators. While introducing correlations does not change the overall 6-dimensional phase space volume, it can change the partitioning of this volume into the longitudinal and two transverse emittances, which become these eigen-emittances if all the initial correlations are unwound and removed. In principle, this technique can be used to generate beams with highly asymmetric emittances, such as those needed for the next generation of very hard X-ray free-electron lasers. This approach is based on linear correlations, and its applicability will be limited by the magnitude of nonlinear effects in photoinjectors which will lead to mixing in phase space that cannot be unwound downstream. Here, we review the eigen-emittance concept and present a linear eigen-emittance design leading to a highly partitioned, and transverse ultra-bright, electron beam. We also present numerical tools to examine the evolution of the eigen-emittances in realistic accelerator structures and results indicating how much partitioning is practical.

Duffy, Leanne D. [Los Alamos National Laboratory; Bishofberger, Kip A. [Los Alamos National Laboratory; Carlsten, Bruce E. [Los Alamos National Laboratory; Dragt, Alex [U. Maryland; Russell, Steven J. [Los Alamos National Laboratory; Ryne, Robert D. [LBNL; Yampolsky, Nikolai A. [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

176

Collapse and expansion in the bright-rimmed cloud SFO 11NE  

E-Print Network (OSTI)

We report the results of a search for the double-peaked blue-skewed infall signature in the bright-rimmed cloud core SFO 11NE SMM1. Observations of the optically thick HCO$^{+}$ and optically thin H$^{13}$CO$^{+}$ J=3--2 lines reveal that there is indeed a characteristic double-peaked line profile, but skewed to the red rather than the blue. Modelling of the dust continuum emission and line profiles show that the motions within SFO 11NE SMM1 are consistent with a collapsing central core surrounded by an expanding outer envelope. We show that the collapse is occurring at a similar rate to that expected onto a single solar-mass protostar and is unlikely to represent the large-scale collapse of gas onto the infrared cluster seen at the heart of SFO 11NE SMM1. The outer envelope is expanding at a much greater rate than that expected for a photoevaporated flow from the cloud surface. The modelled expansion is consistent with the bulk cloud re-expansion phase predicted by radiative-driven implosion models of cometary clouds.

M. A Thompson; G. J. White

2004-02-24T23:59:59.000Z

177

Nuclear Stellar Populations in the Infrared Space Observatory Atlas of Bright Spiral Galaxies  

E-Print Network (OSTI)

To understand the nuclear stellar populations and star formation histories of the nuclei of spiral galaxies, we have obtained K-band nuclear spectra for 41 galaxies and H-band spectra for 20 galaxies in the ISO Atlas of Bright Spiral Galaxies. In the vast majority of the subsample (80%), the near-infrared spectra suggest that evolved red stars completely dominate the nuclear stellar populations and that hot young stars are virtually non-existent. The signatures of recent star formation activity are only found in 20% of the subsample, even though older red stars still dominate the stellar populations in these galaxies. Given the dominance of evolved stars in most galaxy nuclei and the nature of the emission lines in the galaxies where they were detected, we suggest that nuclear star formation proceeds in the form of instantaneous bursts. The stars produced by these bursts comprise only ~2% of the total nuclear stellar mass in these galaxies, but we demonstrate how the nuclear stellar populations of normal spiral galaxies can be built up through a series of these bursts. The bursts were detected only in Sbc galaxies and later, and both bars and interactions appeared to be sufficient but not necessary triggers for the nuclear star formation activity. The vast majority of galaxies with nuclear star formation were classified as HII galaxies. With one exception, LINERs and transition objects were dominated by older red stars, which suggested that star formation was not responsible for generating these galaxies' optical line emission.

George J. Bendo; Robert D. Joseph

2004-03-04T23:59:59.000Z

178

Active Detection and Imaging of Nuclear Materials with High-Brightness Gamma Rays  

Science Conference Proceedings (OSTI)

A Compton scattering {gamma}-ray source, capable of producing photons with energies ranging from 0.1 MeV to 0.9 MeV has been commissioned and characterized, and then used to perform nuclear resonance fluorescence (NRF) experiments. The performances of the two laser systems (one for electron production, one for scattering), the electron photoinjector, and the linear accelerator are also detailed, and {gamma}-ray results are presented. The key source parameters are the size (0.01 mm{sup 2}), horizontal and vertical divergence (6 x 10 mrad{sup 2}), duration (10 ps), spectrum and intensity (10{sup 5} photons/shot). These parameters are summarized by the peak brightness, 1.5 x 10{sup 15} photons/mm{sup 2}/mrad{sup 2}/s/0.1% bandwidth, measured at 478 keV. Additional measurements of the flux as a function of the timing difference between the drive laser pulse and the relativistic photo-electron bunch, {gamma}-ray beam profile, and background evaluations are presented. These results are systematically compared to theoretical models and computer simulations. NRF measurements performed on {sup 7}Li in LiH demonstrate the potential of Compton scattering photon sources to accurately detect isotopes in situ.

Barty, C J; Gibson, D J; Albert, F; Anderson, S G; Anderson, G G; Betts, S M; Berry, R D; Fisher, S E; Hagmann, C A; Johnson, M S; Messerly, M J; Phan, H H; Semenov, V A; Shverdin, M Y; Tremaine, A M; Hartemann, F V; Siders, C W; McNabb, D P

2009-02-26T23:59:59.000Z

179

Preparation of brightness stabilization agent for lignin containing pulp from biomass pyrolysis oils  

DOE Patents (OSTI)

A process for producing a brightness stabilization mixture of water-soluble organic compounds from biomass pyrolysis oils comprising: a) size-reducing biomass material and pyrolyzing the size-reduced biomass material in a fluidized bed reactor; b) separating a char/ash component while maintaining char-pot temperatures to avoid condensation of pyrolysis vapors; c) condensing pyrolysis gases and vapors, and recovering pyrolysis oils by mixing the oils with acetone to obtain an oil-acetone mixture; d) evaporating acetone and recovering pyrolysis oils; e) extracting the pyrolysis oils with water to obtain a water extract; f) slurrying the water extract with carbon while stirring, and filtering the slurry to obtain a colorless filtrate; g) cooling the solution and stabilizing the solution against thermally-induced gelling and solidification by extraction with ethyl acetate to form an aqueous phase lower layer and an organic phase upper layer; h) discarding the upper organic layer and extracting the aqueous layer with ethyl acetate, and discarding the ethyl acetate fraction to obtain a brown-colored solution not susceptible to gelling or solidification upon heating; i) heating the solution to distill off water and other light components and concentrating a bottoms fraction comprising hydroxyacetaldehyde and other non-volatile components having high boiling points; and j) decolorizing the stabilized brown solution with activated carbon to obtain a colorless solution.

Agblevor, Foster A. (Blacksburg, VA); Besler-Guran, Serpil (Flemington, NJ)

2001-01-01T23:59:59.000Z

180

A catalog of bright calibrator stars for 200-meter baseline near-infrared stellar interferometry  

E-Print Network (OSTI)

We present in this paper a catalog of reference stars suitable for calibrating infrared interferometric observations. In the K band, visibilities can be calibrated with a precision of 1% on baselines up to 200 meters for the whole sky, and up to 300 meters for some part of the sky. This work, extending to longer baselines a previous catalog compiled by Borde et al. (2002), is particularly well adapted to hectometric-class interferometers such as the Very Large Telescope Interferometer (VLTI, Glindemann et al. 2003) or the CHARA array (ten Brummelaar et al. 2003) when observing well resolved, high surface brightness objects (K<8). We use the absolute spectro-photometric calibration method introduced by Cohen et al. (1999) to derive the angular diameters of our new set of 948 G8--M0 calibrator stars extracted from IRAS, 2MASS and MSX catalogs. Angular stellar diameters range from 0.6 mas to 1.8 mas (median is 1.1 mas) with a median precision of 1.35%. For both the northern and southern hemispheres, the closest calibrator star is always less than 10 degree away.

A. Merand; P. Borde; V. Coude du Foresto

2004-12-10T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" from the National Library of EnergyBeta (NLEBeta).
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181

THE CATALOG OF POSITIONS OF OPTICALLY BRIGHT EXTRAGALACTIC RADIO SOURCES OBRS-1  

SciTech Connect

It is expected that the European Space Agency mission Gaia will make it possible to determine coordinates in the optical domain of more than 500,000 quasars. In 2006, a radio astrometry project was launched with the overall goal of making comparisons between coordinate systems derived from future space-born astrometry instruments and the coordinate system constructed from analysis of global very long baseline interferometry (VLBI) more robust. Investigation of the rotation, zonal errors, and non-alignment of the radio and optical positions caused by both radio and optical structures is needed to validate both techniques. In order to support these studies, the densification of the list of compact extragalactic objects that are bright in both radio and optical ranges is desirable. A set of 105 objects from the list of 398 compact extragalactic radio sources with decl. >-10{sup 0} was observed with the Very Long Baseline Array and European VLBI Network (EVN) with the primary goal of producing images with milliarcsecond resolution. These sources are brighter than 18 mag in the V band, and they were previously detected by the EVN. In this paper, coordinates of observed sources have been derived with milliarcsecond accuracies from analysis of these VLBI observations using an absolute astrometry method. The catalog of positions for 105 target sources is presented. The accuracies of source coordinates are in the range of 0.3-7 mas, with a median of 1.1 mas.

Petrov, L., E-mail: Leonid.Petrov@lpetrov.net [ADNET Systems Inc./NASA GSFC, Greenbelt, MD 20771 (United States)

2011-10-15T23:59:59.000Z

182

Inter- and Intra-Observer Variability in Prostate Definition With Tissue Harmonic and Brightness Mode Imaging  

Science Conference Proceedings (OSTI)

Purpose: The objective of this study was to compare the relative utility of tissue harmonic (H) and brightness (B) transrectal ultrasound (TRUS) images of the prostate by studying interobserver and intraobserver variation in prostate delineation. Methods and Materials: Ten patients with early-stage disease were randomly selected. TRUS images of prostates were acquired using B and H modes. The prostates on all images were contoured by an experienced radiation oncologist (RO) and five equally trained observers. The observers were blinded to information regarding patient and imaging mode. The volumes of prostate glands and areas of midgland slices were calculated. Volumes contoured were compared among the observers and between observer group and RO. Contours on one patient were repeated five times by four observers to evaluate the intraobserver variability. Results: A one-sample Student t-test showed the volumes outlined by five observers are in agreement (p > 0.05) with the RO. Paired Student t-test showed prostate volumes (p = 0.008) and midgland areas (p = 0.006) with H mode were significantly smaller than that with B mode. Two-factor analysis of variances showed significant interobserver variability (p =}35 cc), B mode provided more consistent estimates. Conclusions: H mode provided superior inter- and intraobserver agreement in prostate volume definition for small to medium prostates. In large glands, H mode does not exhibit any additional advantage. Although harmonic imaging has not proven advantageous for all cases, its utilization seems to be judicious for small prostates.

Sandhu, Gurpreet Kaur, E-mail: Gurpreet.Sandhu2@albertahealthservices.ca [Department of Medical Physics, Tom Baker Cancer Centre, Calgary, Alberta (Canada); Department of Physics and Astronomy, University of Calgary, Calgary, Alberta (Canada); Dunscombe, Peter [Department of Medical Physics, Tom Baker Cancer Centre, Calgary, Alberta (Canada); Department of Physics and Astronomy, University of Calgary, Calgary, Alberta (Canada); Department of Oncology, Faculty of Medicine, University of Calgary, Calgary, Alberta (Canada); Meyer, Tyler [Department of Medical Physics, Tom Baker Cancer Centre, Calgary, Alberta (Canada); Department of Physics and Astronomy, University of Calgary, Calgary, Alberta (Canada); Pavamani, Simon [Department of Oncology, Faculty of Medicine, University of Calgary, Calgary, Alberta (Canada); Department of Radiation Oncology, Christian Medical College, Vellore (India); Khan, Rao [Department of Medical Physics, Tom Baker Cancer Centre, Calgary, Alberta (Canada); Department of Physics and Astronomy, University of Calgary, Calgary, Alberta (Canada); Department of Oncology, Faculty of Medicine, University of Calgary, Calgary, Alberta (Canada)

2012-01-01T23:59:59.000Z

183

Posters Brightness Fields of Broken Clouds V. E. Zuev, G. A. Titov, E. I. Kasyanov, and D. A. Zimin  

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

1 1 Posters Brightness Fields of Broken Clouds V. E. Zuev, G. A. Titov, E. I. Kasyanov, and D. A. Zimin Institute of Atmospheric Optics, Siberian Branch Russian Academy of Sciences Tomsk, Russia Introduction The radiation budget and brightness field of the system "atmosphere-underlying surface" are controlled, to a considerable degree, by the variety of forms and the strong space-time variability of cloud cover. The space and angle structure of the radiation fields of cloudy atmosphere together with their sensitivity to cloud variations provide an important source of information needed to formulate and solve problems of the remote optical sensing of cloudy atmosphere (e.g., King 1987; Yi et al. 1990) and of satellite meteorology, as well as for retrievals of the albedo from

184

High-Brightness Beams from a Light Source Injector The Advanced Photon Source Low-Energy Undulator Test Line Linac  

E-Print Network (OSTI)

The use of existing linacs, and in particular light source injectors, for free-electron laser (FEL) experiments is becoming more common due to the desire to test FELs at ever shorter wavelengths. The high-brightness, high-current beams required by high-gain FELs impose technical specifications that most existing linacs were not designed to meet. Moreover, the need for specialized diagnostics, especially shot-to-shot data acquisition, demands substantial modification and upgrade of conventional linacs. Improvements have been made to the Advanced Photon Source (APS) injector linac in order to produce and characterize high-brightness beams. Specifically, effort has been directed at generating beams suitable for use in the low-energy undulator test line (LEUTL) FEL in support of fourth-generation light source research. The enhancements to the linac technical and diagnostic capabilities that allowed for self-amplified spontaneous emission (SASE) operation of the FEL at 530 nm are described. Recent results, includi...

Travish, G; Borland, M; Hahne, M; Harkay, K C; Lewellen, J W; Lumpkin, Alex H; Milton, S V; Sereno, N S

2000-01-01T23:59:59.000Z

185

Temperature structure of the intergalactic medium within seven nearby and bright clusters of galaxies observed with XMM-Newton  

E-Print Network (OSTI)

Aims. We map the temperature structure of the intra-cluster medium (ICM) within a nearly complete X-ray flux limited sample of galaxy clusters in the redshift range z=[0.045,0.096]. Our sample contains seven bright clusters of galaxies observed with XMM-Newton: Abell 399, Abell 401, Abell 478, Abell 1795, Abell 2029, Abell 2065, Abell 2256. Methods. We use a multi-scale spectral mapping algorithm especially designed to map spectroscopic observables from X-ray extended emission of the ICM. Derived from a former algorithm using Haar wavelets, our algorithm is now implemented with B-spline wavelets in order to perform a more regular analysis of the signal. Results. For the four clusters in our sample that are major mergers, we find a complex thermal structure with strong thermal variations consistent with their dynamics. For two of them, A2065 and A2256, we perform a 3-d analysis of cold front features evidenced from the gas temperature and brightness maps. Furthermore, we detect a significant non-radial thermal structure outside the cool core region of the other 3 more "regular" clusters, with relative amplitudes of about about 10%. We investigate possible implications of this structure on the mass estimates of the "regular" clusters A1795 and A2029, by extracting surface brightness and temperature profiles from sectors correspondings to the hottest and coldest regions in the maps. While compensating with surface brightness for A2029, leading to consistent mass profiles, the temperature structure leads to significant mass discrepancies in the innermost region of A1795.

H. Bourdin; P. Mazzotta

2008-02-13T23:59:59.000Z

186

Proving the conservation of surface brightness during the strong and weak lensing of light by an isothermal sphere  

E-Print Network (OSTI)

An analytical proof of the conservation of surface brightness during the strong and weak lensing of light by a singular isothermal sphere is provided. It is shown that the movement of asymptotic rays provide room for precisely the extra solid angle claimed by the magnification of the centrally passing rays. Previous claim of a violation of this conservation law, leading to a problem over the COBE all sky CMB flux, is hereby withdrawn.

Richard Lieu

2004-09-27T23:59:59.000Z

187

TURBULENT DIFFUSION IN THE PHOTOSPHERE AS DERIVED FROM PHOTOSPHERIC BRIGHT POINT MOTION  

SciTech Connect

On the basis of observations of solar granulation obtained with the New Solar Telescope of Big Bear Solar Observatory, we explored proper motion of bright points (BPs) in a quiet-sun area, a coronal hole, and an active region plage. We automatically detected and traced BPs and derived their mean-squared displacements as a function of time (starting from the appearance of each BP) for all available time intervals. In all three magnetic environments, we found the presence of a super-diffusion regime, which is the most pronounced inside the time interval of 10-300 s. Super-diffusion, measured via the spectral index, {gamma}, which is the slope of the mean-squared displacement spectrum, increases from the plage area ({gamma} = 1.48) to the quiet-sun area ({gamma} = 1.53) to the coronal hole ({gamma} = 1.67). We also found that the coefficient of turbulent diffusion changes in direct proportion to both temporal and spatial scales. For the minimum spatial scale (22 km) and minimum time scale (10 s), it is 22 and 19 km{sup 2} s{sup -1} for the coronal hole and the quiet-sun area, respectively, whereas for the plage area it is about 12 km{sup 2} s{sup -1} for the minimum time scale of 15 s. We applied our BP tracking code to three-dimensional MHD model data of solar convection and found the super-diffusion with {gamma} = 1.45. An expression for the turbulent diffusion coefficient as a function of scales and {gamma} is obtained.

Abramenko, V. I.; Yurchyshyn, V.; Goode, P. R. [Big Bear Solar Observatory, Big Bear City, CA 92314 (United States); Carbone, V.; Lepreti, F.; Capparelli, V.; Vecchio, A. [Dipartimento di Fisica, Universita della Calabria, I-87036 Rende (Italy); Stein, R. F. [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)

2011-12-20T23:59:59.000Z

188

Production of high brightness H- beam by charge exchange of hydrogen atom beam in sodium jet  

DOE Green Energy (OSTI)

Production of H{sup -} beam for accelerators applications by charge exchange of high brightness hydrogen neutral beam in a sodium jet cell is experimentally studied in joint BNL-BINP experiment. In the experiment, a hydrogen-neutral beam with 3-6 keV energy, equivalent current up to 5 A and 200 microsecond pulse duration is used. The atomic beam is produced by charge exchange of a proton beam in a pulsed hydrogen target. Formation of the proton beam is performed in an ion source by four-electrode multiaperture ion-optical system. To achieve small beam emittance, the apertures in the ion-optical system have small enough size, and the extraction of ions is carried out from the surface of plasma emitter with a low transverse ion temperature of {approx}0.2 eV formed as a result of plasma jet expansion from the arc plasma generator. Developed for the BNL optically pumped polarized ion source, the sodium jet target with recirculation and aperture diameter of 2 cm is used in the experiment. At the first stage of the experiment H{sup -} beam with 36 mA current, 5 keV energy and {approx}0.15 cm {center_dot} mrad normalized emittance was obtained. To increase H{sup -} beam current ballistically focused hydrogen neutral beam will be applied. The effects of H{sup -} beam space-charge and sodium-jet stability will be studied to determine the basic limitations of this approach.

Davydenko, V.; Zelenski, A.; Ivanov, A.; Kolmogorov, A.

2010-11-16T23:59:59.000Z

189

The Response of the SSM/I to the Marine Environment. Part I: An Analytic Model for the Atmospheric Component of Observed Brightness Temperatures  

Science Conference Proceedings (OSTI)

A comprehensive closed-form parameterization has been developed for the contribution of the nonprecipitating marine atmosphere to microwave brightness temperatures observed by the Special Sensor Microwave/Imager (SSM/I). The variables considered ...

Grant W. Petty; Kristina B. Katsaros

1992-12-01T23:59:59.000Z

190

arXiv:0708.1804v1[astro-ph]14Aug2007 Discovery of a bright transient ultraluminous X-ray  

E-Print Network (OSTI)

, Pittsburgh, PA 15213, USA 5Department of Physics, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan (Received 0 0; accepted 0 0) Abstract This paper reports the discovery of a bright

Gandhi, Poshak

191

Foundations for Statistical-Physical Precipitation Retrieval from Passive Microwave Satellite Measurements. Part I: Brightness-Temperature Properties of a Time-dependent Cloud-Radiation Model  

Science Conference Proceedings (OSTI)

A cloud-radiation model is used to investigate the relationship between emerging microwave brightness temperatures (TB's) and vertically distributed mixtures of liquid and frozen hydrometeors as a means to establish the framework for a hybrid ...

Eric A. Smith; Harry J. Cooper; Xuwu Xiang; Alberto Mugnai; Gregory J. Tripoli

1992-06-01T23:59:59.000Z

192

Quantifying EOS Aqua and NOAA POES AMSU-A Brightness Temperature Biases for Weather and Climate Applications Utilizing the SNO Method  

Science Conference Proceedings (OSTI)

Systematic biases between brightness temperature (Tb) measurements made from concurrently operational Advanced Microwave Sounding Unit-A (AMSU-A) instruments can introduce errors into weather and climate applications. For this reason, in this ...

Robert A. Iacovazzi Jr.; Changyong Cao

2007-11-01T23:59:59.000Z

193

The SCUBA Bright Quasar Survey (SBQS): 850micron observations of the z>4 sample  

E-Print Network (OSTI)

We present initial results of a new, systematic search for massive star-formation in the host galaxies of the most luminous and probably most massive z>=4 radio-quiet quasars (M(B) 10^13Lsun). A total of 38 z>=4 radio-quiet quasars have been observed at the JCMT using SCUBA at 850microns: 8 were detected (>3sigma) with S(850microns)>~ 10mJy (submillimetre-loud). The new detections almost triple the number of optically selected, submillimetre-loud z>~4 radio-quiet quasars known to date. We include a detailed description of how our quasar sample is defined in terms of radio and optical properties. There is no strong evidence for trends in either detectability or 850microns flux with absolute magnitude, M(B). We find that the weighted mean flux of the undetected sources is 2.0 +/- 0.6mJy, consistent with an earlier estimate of \\~3mJy based on more sensitive observations of a sample z>~4 radio-quiet quasars (McMahon et al., 1999). This corresponds to an inferred starformation rate of \\~1000Msun/yr, similar to Arp220. The typical starformation timescale for the submillimetre-bright sources is ~1Gyr, 10 times longer than the typical accretion-driven e-folding timescale of ~5x10^7 years. Our 850micron detection of the z=4.4 quasar PSS J1048+4407 when analysed in conjunction with 1.2mm single-dish and interferometric observations suggests that this source is resolved on angular scales of 1-2" (6-12 kpc). In addition, we present a new optical spectrum of this source, identifying it as a broad absorption line (BAL) quasar. The new redshift is outside that covered in a recent CO line search by Guilloteau et al., (1999), highlighting the need for accurate redshifts for the obervation and interpretation of high-redshift line studies.

Kate G. Isaak; Robert S. Priddey; Richard G. McMahon; Alain Omont; Celine Peroux; Robert G. Sharp; Stafford Withington

2001-09-25T23:59:59.000Z

194

Low-Surface-Brightness Galaxies in the Sloan Digital Sky Survey. I. Search Method and Test Sample  

E-Print Network (OSTI)

In this paper we present results of a pilot study to use imaging data from the Sloan Digital Sky Survey (SDSS) to search for low-surface-brightness (LSB) galaxies. For our pilot study we use a test sample of 92 galaxies from the catalog of Impey et al. (1996) distributed over 93 SDSS fields of the Early Data Release (EDR). Many galaxies from the test sample are either LSB or dwarf galaxies. To deal with the SDSS data most effectively a new photometry software was created, which is described in this paper. We present the results of the selection algorithms applied to these 93 EDR fields. Two galaxies from the Impey et al. test sample are very likely artifacts, as confirmed by follow-up imaging. With our algorithms, we were able to recover 87 of the 90 remaining test sample galaxies, implying a detection rate of $\\sim$96.5%. The three missed galaxies fall too close to very bright stars or galaxies. In addition, 42 new galaxies with parameters similar to the test sample objects were found in these EDR fields (i.e., $\\sim$47% additional galaxies). We present the main photometric parameters of all identified galaxies and carry out first statistical comparisons. We tested the quality of our photometry by comparing the magnitudes for our test sample galaxies and other bright galaxies with values from the literature. All these tests yielded consistent results. We briefly discuss a few unusual galaxies found in our pilot study, including an LSB galaxy with a two-component disk and ten new giant LSB galaxies.

Alexei Y. Kniazev; Eva K. Grebel; Simon A. Pustilnik; Alexander G. Pramskij; Tamara F. Kniazeva; Francisco Prada; Daniel Harbeck

2003-10-22T23:59:59.000Z

195

THE BRIGHTEST OF REIONIZING GALAXIES SURVEY: CONSTRAINTS ON THE BRIGHT END OF THE z {approx} 8 LUMINOSITY FUNCTION  

Science Conference Proceedings (OSTI)

We report the discovery of 33 Lyman-break galaxy candidates at z {approx} 8 detected in Hubble Space Telescope Wide Field Camera 3 (WFC3) imaging as part of the Brightest of Reionizing Galaxies (BoRG) pure-parallel survey. The ongoing BoRG survey currently has the largest area (274 arcmin{sup 2}) with Y {sub 098} (or Y {sub 105}), J {sub 125}, and H {sub 160} band coverage needed to search for z {approx} 8 galaxies, about three times the current CANDELS area, and slightly larger than what will be the final CANDELS wide component with Y {sub 105} data (required to select z {approx} 8 sources). Our sample of 33 relatively bright Y {sub 098}-dropout galaxies have J {sub 125}-band magnitudes between 25.5 and 27.4 mag. This is the largest sample of bright (J {sub 125} {approx}data set with the Hubble Ultra-Deep Field data set, we constrain the rest-frame ultraviolet galaxy luminosity function at z {approx} 8 over the widest dynamic range currently available. The combined data sets are well fitted by a Schechter function, i.e., {phi} (L) = {phi}{sub *} (L/L{sub *}){sup {alpha}} e{sup -(}L{sup /L{sub *})}, without evidence for an excess of sources at the bright end. At 68% confidence, for h = 0.7 we derive {phi}{sub *} = (4.3{sup +3.5} {sub -2.1}) Multiplication-Sign 10{sup -4} Mpc{sup -3}, M {sub *} = -20.26{sup +0.29} {sub -0.34}, and a very steep faint-end slope {alpha} = -1.98{sup +0.23} {sub -0.22}. While the best-fit parameters still have a strong degeneracy, especially between {phi}{sub *} and M {sub *}, our improved coverage at the bright end has reduced the uncertainty of the faint-end power-law slope at z {approx} 8 compared to the best previous determination at {+-}0.4. With a future expansion of the BoRG survey, combined with planned ultradeep WFC3/IR observations, it will be possible to further reduce this uncertainty and clearly demonstrate the steepening of the faint-end slope compared to measurements at lower redshift, thereby confirming the key role played by small galaxies in the reionization of the universe.

Bradley, L. D.; Stiavelli, M.; Pirzkal, N. [Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218 (United States); Trenti, M. [Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA (United Kingdom); Oesch, P. A. [UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Treu, T. [Department of Physics, University of California, Santa Barbara, CA 93106-9530 (United States); Bouwens, R. J. [Leiden Observatory, Leiden University, NL-2300 RA Leiden (Netherlands); Shull, J. M. [CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Holwerda, B. W. [European Space Agency (ESTEC), Keplerlaan 1, NL-2200 AG, Noordwijk (Netherlands)

2012-12-01T23:59:59.000Z

196

Rotation as a source of asymmetry in the double-peak lightcurves of the bright EGRET pulsars  

E-Print Network (OSTI)

We investigate the role of rotational effects in inducing asymmetry present above ~5 GeV in the double-peak lightcurves of the bright EGRET pulsars: Vela, Crab, and Geminga. According to Thompson 2001, the trailing peak dominates over the leading peak above ~5 GeV consistently for all three pulsars, even though this is not the case over the entire energy range of EGRET, i.e. above ~100 MeV. We present the results of Monte Carlo simulations of electromagnetic cascades in a pulsar magnetosphere within a single-polar-cap scenario with rotationally-induced propagation effects of the order of v/c (where v is the local corotation velocity). We find that even in the case of nearly aligned rotators with spin periods of P ~ 0.1 s rotation may lead to asymmetric (with respect to the magnetic axis) magnetic photon absorption which in turn leads to asymmetric gamma-ray pulse profiles. The resulting features - softer spectrum of the leading peak and the dominance of the trailing peak above ~5 GeV - agree qualitatively with the EGRET data of the bright gamma-ray pulsars.

J. Dyks; B. Rudak

2002-07-25T23:59:59.000Z

197

The near-IR Surface Brightness Method applied to six Cepheids in the young LMC cluster NGC1866  

E-Print Network (OSTI)

We present new near-IR light curves for six Cepheids in the young blue LMC cluster NGC1866 as well as high precision radial velocity curves for ten Cepheids in NGC1866 and two in NGC2031. For the six Cepheids in NGC1866 with new J and K light curves we determine distances and absolute magnitudes by applying the near-IR surface brightness method. We find that the formal error estimates on the derived distances are underestimated by about a factor of two. We find excellent agreement between the absolute magnitudes for the low metallicity LMC Cepheids with the Period-Luminosity (P-L) relation determined by the near-IR surface brightness (ISB) method for Galactic Cepheids suggesting that the slope of the P-L relations for low metallicity and solar metallicity samples could be very similar in contrast to other recent findings. Still there appears to be significant disagreement between the observed slopes of the OGLE based apparent P-L relations in the LMC and the slopes derived from ISB analysis of Galactic Cepheids, and by inference for Magellanic Cloud Cepheids, indicating a possible intrinsic problem with the ISB method itself. Resolving this problem could reaffirm the P-L relation as the prime distance indicator applicable as well to metallicities significantly different from the LMC value.

Jesper Storm; Wolfgang P. Gieren; Pascal Fouque; Thomas G. Barnes III; Matias Gomez

2005-06-06T23:59:59.000Z

198

On the Brightness and Waiting-time Distributions of a Type III Radio Storm observed by STEREO/WAVES  

E-Print Network (OSTI)

Type III solar radio storms, observed at frequencies below approximately 16 MHz by space borne radio experiments, correspond to the quasi-continuous, bursty emission of electron beams onto open field lines above active regions. The mechanisms by which a storm can persist in some cases for more than a solar rotation whilst exhibiting considerable radio activity are poorly understood. To address this issue, the statistical properties of a type III storm observed by the STEREO/WAVES radio experiment are presented, examining both the brightness distribution and (for the first time) the waiting-time distribution. Single power law behavior is observed in the number distribution as a function of brightness; the power law index is approximately 2.1 and is largely independent of frequency. The waiting-time distribution is found to be consistent with a piecewise-constant Poisson process. This indicates that during the storm individual type III bursts occur independently and suggests that the storm dynamics are consiste...

Eastwood, J P; Hudson, H S; Krucker, S; Bale, S D; Maksimovic, M; Goetz, K; Bougeret, J -L

2009-01-01T23:59:59.000Z

199

ON THE BRIGHTNESS AND WAITING-TIME DISTRIBUTIONS OF A TYPE III RADIO STORM OBSERVED BY STEREO/WAVES  

SciTech Connect

Type III solar radio storms, observed at frequencies below {approx}16 MHz by space-borne radio experiments, correspond to the quasi-continuous, bursty emission of electron beams onto open field lines above active regions. The mechanisms by which a storm can persist in some cases for more than a solar rotation whilst exhibiting considerable radio activity are poorly understood. To address this issue, the statistical properties of a type III storm observed by the STEREO/WAVES radio experiment are presented, examining both the brightness distribution and (for the first time) the waiting-time distribution (WTD). Single power-law behavior is observed in the number distribution as a function of brightness; the power-law index is {approx}2.1 and is largely independent of frequency. The WTD is found to be consistent with a piecewise-constant Poisson process. This indicates that during the storm individual type III bursts occur independently and suggests that the storm dynamics are consistent with avalanche-type behavior in the underlying active region.

Eastwood, J. P.; Hudson, H. S.; Krucker, S.; Bale, S. D. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Wheatland, M. S. [Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006 (Australia); Maksimovic, M.; Bougeret, J.-L. [LESIA, Observatoire de Paris, F-92195 Meudon (France); Goetz, K. [School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)], E-mail: eastwood@ssl.berkeley.edu

2010-01-10T23:59:59.000Z

200

A COMPLETE SAMPLE OF BRIGHT SWIFT LONG GAMMA-RAY BURSTS. I. SAMPLE PRESENTATION, LUMINOSITY FUNCTION AND EVOLUTION  

Science Conference Proceedings (OSTI)

We present a carefully selected sub-sample of Swift long gamma-ray bursts (GRBs) that is complete in redshift. The sample is constructed by considering only bursts with favorable observing conditions for ground-based follow-up searches, which are bright in the 15-150 keV Swift/BAT band, i.e., with 1-s peak photon fluxes in excess to 2.6 photons s{sup -1} cm{sup -2}. The sample is composed of 58 bursts, 52 of them with redshift for a completeness level of 90%, while another two have a redshift constraint, reaching a completeness level of 95%. For only three bursts we have no constraint on the redshift. The high level of redshift completeness allows us for the first time to constrain the GRB luminosity function and its evolution with cosmic times in an unbiased way. We find that strong evolution in luminosity ({delta}{sub l} = 2.3 {+-} 0.6) or in density ({delta}{sub d} = 1.7 {+-} 0.5) is required in order to account for the observations. The derived redshift distributions in the two scenarios are consistent with each other, in spite of their different intrinsic redshift distributions. This calls for other indicators to distinguish among different evolution models. Complete samples are at the base of any population studies. In future works we will use this unique sample of Swift bright GRBs to study the properties of the population of long GRBs.

Salvaterra, R. [INAF, IASF Milano, via E. Bassini 15, I-20133 Milano (Italy); Campana, S.; Vergani, S. D.; Covino, S.; D'Avanzo, P.; Fugazza, D.; Ghirlanda, G.; Ghisellini, G.; Melandri, A.; Sbarufatti, B.; Tagliaferri, G. [INAF, Osservatorio Astronomico di Brera, via E. Bianchi 46, I-23807 Merate (Saint Lucia) (Italy); Nava, L. [SISSA, via Bonomea 265, I-34136 Trieste (Italy); Flores, H. [Laboratoire GEPI, Observatoire de Paris, CNRS-UMR8111, Univ. Paris-Diderot 5 place Jules Janssen, 92195 Meudon (France); Piranomonte, S., E-mail: ruben@lambrate.inaf.it [INAF, Osservatorio Astronomico di Roma, via Frascati 33, 00040 Monte Porzio Catone, Rome (Italy)

2012-04-10T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

GRB 090926A AND BRIGHT LATE-TIME FERMI LARGE AREA TELESCOPE GAMMA-RAY BURST AFTERGLOWS  

SciTech Connect

GRB 090926A was detected by both the Gamma-ray Burst Monitor and Large Area Telescope (LAT) instruments on board the Fermi Gamma-ray Space Telescope. Swift follow-up observations began {approx}13 hr after the initial trigger. The optical afterglow was detected for nearly 23 days post trigger, placing it in the long-lived category. The afterglow is of particular interest due to its brightness at late times, as well as the presence of optical flares at T0+10{sup 5} s and later, which may indicate late-time central engine activity. The LAT has detected a total of 16 gamma-ray bursts; nine of these bursts, including GRB 090926A, also have been observed by Swift. Of the nine Swift-observed LAT bursts, six were detected by UVOT, with five of the bursts having bright, long-lived optical afterglows. In comparison, Swift has been operating for five years and has detected nearly 500 bursts, but has only seen {approx}30% of bursts with optical afterglows that live longer than 10{sup 5} s. We have calculated the predicted gamma-ray fluence, as would have been seen by the Burst Alert Telescope (BAT) on board Swift, of the LAT bursts to determine whether this high percentage of long-lived optical afterglows is unique, when compared to BAT-triggered bursts. We find that, with the exception of the short burst GRB 090510A, the predicted BAT fluences indicate that the LAT bursts are more energetic than 88% of all Swift bursts and also have brighter than average X-ray and optical afterglows.

Swenson, C. A.; Roming, P. W. A.; Vetere, L.; Kennea, J. A. [Pennsylvania State University, 525 Davey Lab, University Park, PA 16802 (United States); Maxham, A.; Zhang, B. B.; Zhang, B. [University of Nevada, Las Vegas, Box 454002, 4505 Maryland Parkway, Las Vegas, NV 89154 (United States); Schady, P. [Max-Planck-Institut fuer extraterrestrische Physik, Garching (Germany); Holland, S. T. [Universities Space Research Association, 10227 Wincopin Circle, Suite 500, Columbia, MD 21044 (United States); Kuin, N. P. M.; Oates, S. R.; De Pasquale, M. [The UCL Mullard Space Science Laboratory, Holmbury St Mary, Surrey, RH5 6NT (United Kingdom); Page, K. L., E-mail: cswenson@astro.psu.ed [Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH (United Kingdom)

2010-07-20T23:59:59.000Z

202

THE BRIGHT GAMMA-RAY BURST OF 2000 FEBRUARY 10: A CASE STUDY OF AN OPTICALLY DARK GAMMA-RAY BURST  

E-Print Network (OSTI)

THE BRIGHT GAMMA-RAY BURST OF 2000 FEBRUARY 10: A CASE STUDY OF AN OPTICALLY DARK GAMMA-RAY BURST L Received 2002 January 16; accepted 2002 June 8 ABSTRACT The gamma-ray burst GRB 000210 had the highest: observations -- gamma-rays: bursts 1. INTRODUCTION It is observationally well established that about half

Fynbo, Johan

203

A Search for Occultations of Bright Stars by Small Kuiper Belt Objects using Megacam on the MMT  

E-Print Network (OSTI)

We conducted a search for occultations of bright stars by Kuiper Belt Objects (KBOs) to estimate the density of sub-km KBOs in the sky. We report here the first results of this occultation survey of the outer solar system conducted in June 2007 and June/July 2008 at the MMT Observatory using Megacam, the large MMT optical imager. We used Megacam in a novel shutterless continuous--readout mode to achieve high precision photometry at 200 Hz. We present an analysis of 220 star hours at signal-to-noise ratio of 25 or greater. The survey efficiency is greater than 10% for occultations by KBOs of diameter d>=0.7 km, and we report no detections in our dataset. We set a new 95% confidence level upper limit for the surface density \\Sigma_N(d) of KBOs larger than 1 km: \\Sigma_N(d>=1 km) = 0.7 km) <= 4.8e8 deg^-2.

Bianco, Federica B; McLeod, Brian A; Alcock, Charles R; Holman, Matthew J; Lehner, Matthew J

2009-01-01T23:59:59.000Z

204

Structural parameters for globular clusters in NGC 5128. III. ACS surface-brightness profiles and model fits  

E-Print Network (OSTI)

We present internal surface-brightness profiles, based on HST/ACS imaging in the F606W bandpass, for 131 globular cluster (GC) candidates with luminosities 10^4 - 3 x 10^6 solar, in the giant elliptical galaxy NGC 5128. Several structural models are fit to the profile of each cluster and combined with mass-to-light ratios from population-synthesis models, to derive a catalogue of fundamental structural and dynamical parameters parallel in form to the catalogues recently produced by McLaughlin & van der Marel and Barmby et al. for GCs and massive young star clusters in Local Group galaxies. As part of this, we provide corrected and extended parameter estimates for another 18 clusters in NGC 5128, which we observed previously. We show that, like GCs in the Milky Way and some of its satellites, the majority of globulars in NGC 5128 are well fit by isotropic Wilson models, which have intrinsically more distended envelope structures than the standard King lowered isothermal spheres. We use our models to predict internal velocity dispersions for every cluster in our sample. These predictions agree well in general with the observed dispersions in a small number of clusters for which spectroscopic data are available. In a subsequent paper, we use these results to investigate scaling relations for GCs in NGC 5128.

Dean E. McLaughlin; Pauline Barmby; William E. Harris; Duncan A. Forbes; Gretchen L. H. Harris

2007-11-14T23:59:59.000Z

205

C-GOALS: Chandra observations of a complete sample of luminous infrared galaxies from the IRAS Revised Bright Galaxy Survey  

E-Print Network (OSTI)

We present X-ray data for a complete sample of 44 luminous infrared galaxies (LIRGs), obtained with the Chandra X-ray Observatory. These are the X-ray observations of the high luminosity portion of the Great Observatory All-sky LIRG Survey (GOALS), which includes the most luminous infrared selected galaxies, log (Lir/Lsun) > 11.73, in the local universe, z < 0.088. X-rays were detected from 43 out of 44 objects, and their arcsec-resolution images, spectra, and radial brightness distributions are presented. With a selection by hard X-ray colour and the 6.4 keV iron line, AGN are found in 37% of the objects, with higher luminosity sources more likely to contain an AGN. These AGN also tend to be found in late-stage mergers. The AGN fraction would increase to 48% if objects with mid-IR [Ne V] detection are included. Double AGN are clearly detected only in NGC 6240 among 24 double/triple systems. Other AGN are found either in single nucleus objects or in one of the double nuclei at similar rates. Objects withou...

Iwasawa, K; Teng, Stacy H; U, Vivian; Armus, L; Evans, A S; Howell, J H; Komossa, S; Mazzarella, J M; Petric, A O; Surace, J A; Vavilkin, T; Veilleux, S; Trentham, N

2011-01-01T23:59:59.000Z

206

City of Milwaukee - Milwaukee Shines Solar Financing | Open Energy...  

Open Energy Info (EERE)

years. Eligible equipment includes solar electric systems of up to 6 kilowatts (kW) and solar hot water systems of up to 8 panels. Projects must be installed by a Focus on Energy...

207

SLAC National Accelerator Laboratory - FACET Prepares to Shine  

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

exclaimed, "These drawings were made before I was born" Wienands had high praise for his tight-knit commissioning team, and in particular for the many contributors from SLAC...

208

Letting the Sun Shine on Solar Costs: An Empirical Investigation...  

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

and Japan. The results presented here are based on an analysis of 18,942 grid-connected PV systems totaling 254 MWAC, either installed, approved for installation, or waitlisted...

209

Shining On: A primer on solar radiation data  

SciTech Connect

This document is a primer on solar radiation data. General uses of solar energy are presented. The manner in which solar radiation data is used to aid engineers in optimizing the use of solar thermal conversion and photovoltaic conversion is discussed. Methods for acquiring and assimilating the solar radiation data are illustrated. This would include the design and use of pyranometers and pyrheliometers. Seasonal and geographical variations in solar flux reaching the earth are evaluated. Other uses of compiled data include the determination of meteorological impacts of atmospheric disturbances such as volcano eruptions.

Dunlap, M.A.; Cook, G. [eds.; Marion, B.; Riordan, C.; Renne, D.

1992-05-01T23:59:59.000Z

210

Virginia Tech Shines Light on Home Efficiency | Department of...  

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

photovoltaic panels, allowing the zero-emissions house to operate completely on solar power. These panels are bifacial, meaning they collect energy from both the top and...

211

Cosmos incognito : Vera Rubin shines light on dark matter  

E-Print Network (OSTI)

This thesis, a profile of astronomer Vera Rubin, highlights her scientific achievements, most notably the irrefutable evidence she gathered to persuade the astronomical community that galaxies spin at a faster speed than ...

Yeager, Ashley

2008-01-01T23:59:59.000Z

212

LANL Instrument to Shine Light on Mars Habitability | National...  

National Nuclear Security Administration (NNSA)

from the French space institute IRAP are poised to begin focusing the energy of a million light bulbs on the surface of the red planet to help determine whether Mars was or is...

213

Shining Light on Dark Energy and Modifications of Gravity  

E-Print Network (OSTI)

Many theories of dark energy and modified gravity give rise to scalar fields that couple derivatively to the energy momentum tensor of matter. This is known as disformal coupling. I will show that laboratory searches for axions are ideally suited to search for and constrain disformal scalar fields.

Burrage, Clare

2013-01-01T23:59:59.000Z

214

Shining Light on Dark Energy and Modifications of Gravity  

E-Print Network (OSTI)

Many theories of dark energy and modified gravity give rise to scalar fields that couple derivatively to the energy momentum tensor of matter. This is known as disformal coupling. I will show that laboratory searches for axions are ideally suited to search for and constrain disformal scalar fields.

Clare Burrage

2013-01-08T23:59:59.000Z

215

X-Ray Shines Light on Water Mystery  

DOE Green Energy (OSTI)

Water is the key compound for our existence on this planet and it is involved in many important physical, chemical, biological and geological processes. Although water is the most common molecular substance it is also most unusual with many anomalies in its thermodynamic properties such as compressibility, density variation and heat capacity. The question of the structure of the hydrogen bonding network in water has been discussed intensively for over 100 years and has not yet been resolved. This talk will describe recent x-ray spectroscopy and scattering measurements showing that the liquid can be described as fluctuations between two types of local hydrogen bonded structures driven by in commensurate requirements for minimizing enthalpy and maximizing entropy.

Nilsson, Anders (SLAC)

2010-11-17T23:59:59.000Z

216

Shining Light on Catalysis | Stanford Synchrotron Radiation Lightsourc...  

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

Catalysis Tuesday, July 19, 2011 - 4:38pm SSRL Conference Room 137-322 Jeroen A. van Bokhoven, Professor for Heterogeneous Catalysis Institute for Chemical and Bioengineering ETH...

217

KELT-2Ab: A HOT JUPITER TRANSITING THE BRIGHT (V = 8.77) PRIMARY STAR OF A BINARY SYSTEM  

Science Conference Proceedings (OSTI)

We report the discovery of KELT-2Ab, a hot Jupiter transiting the bright (V = 8.77) primary star of the HD 42176 binary system. The host is a slightly evolved late F-star likely in the very short-lived 'blue-hook' stage of evolution, with T{sub eff} = 6148 {+-} 48 K, log g = 4.030{sup +0.015}{sub -0.026} and [Fe/H] = 0.034 {+-} 0.78. The inferred stellar mass is M{sub *} = 1.314{sup +0.063}{sub -0.060} M{sub Sun} and the star has a relatively large radius of R{sub *} = 1.836{sup +0.066}{sub -0.046} R{sub Sun }. The planet is a typical hot Jupiter with period 4.1137913 {+-} 0.00001 days and a mass of M{sub P} = 1.524 {+-} 0.088 M{sub J} and radius of R{sub P} = 1.290{sup +0.064}{sub -0.050} R{sub J}. This is mildly inflated as compared to models of irradiated giant planets at the {approx}4 Gyr age of the system. KELT-2A is the third brightest star with a transiting planet identified by ground-based transit surveys, and the ninth brightest star overall with a transiting planet. KELT-2Ab's mass and radius are unique among the subset of planets with V McLaughlin measurements, which should have an amplitude of {approx}44 m s{sup -1}.

Beatty, Thomas G.; Gaudi, B. Scott; Gould, Andrew [Department of Astronomy, Ohio State University, 140 W. 18th Avenue, Columbus, OH 43210 (United States); Pepper, Joshua; Siverd, Robert J.; Stassun, Keivan G. [Department of Physics and Astronomy, Vanderbilt University, Nashville, TN 37235 (United States); Eastman, Jason D.; Fulton, Benjamin J. [Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, Suite 102, Santa Barbara, CA 93117 (United States); Bieryla, Allyson; Latham, David W.; Berlind, Perry; Calkins, Michael L.; Esquerdo, Gilbert A.; Furesz, Gabor; Geary, John C. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Buchhave, Lars A. [Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, 21S00 Copenhagen (Denmark); Jensen, Eric L. N. [Department of Physics and Astronomy, Swarthmore College, Swarthmore, PA 19081 (United States); Manner, Mark [Spot Observatory, Nunnelly, TN 37137 (United States); Collins, Karen [Department of Physics and Astronomy, University of Louisville, Louisville, KY 40292 (United States); DePoy, Darren L. [Department of Physics and Astronomy, Texas A and M University, College Station, TX 77843 (United States); and others

2012-09-10T23:59:59.000Z

218

THE HALO OCCUPATION DISTRIBUTION OF X-RAY-BRIGHT ACTIVE GALACTIC NUCLEI: A COMPARISON WITH LUMINOUS QUASARS  

SciTech Connect

We perform halo occupation distribution (HOD) modeling of the projected two-point correlation function (2PCF) of high-redshift (z {approx} 1.2) X-ray-bright active galactic nuclei (AGNs) in the XMM-COSMOS field measured by Allevato et al. The HOD parameterization is based on low-luminosity AGNs in cosmological simulations. At the median redshift of z {approx} 1.2, we derive a median mass of 1.02{sub -0.23}{sup +0.21} Multiplication-Sign 10{sup 13} h{sup -1} M{sub sun} for halos hosting central AGNs and an upper limit of {approx}10% on the AGN satellite fraction. Our modeling results indicate (at the 2.5{sigma} level) that X-ray AGNs reside in more massive halos compared to more bolometrically luminous, optically selected quasars at similar redshift. The modeling also yields constraints on the duty cycle of the X-ray AGN, and we find that at z {approx} 1.2 the average duration of the X-ray AGN phase is two orders of magnitude longer than that of the quasar phase. Our inferred mean occupation function of X-ray AGNs is similar to recent empirical measurements with a group catalog and suggests that AGN halo occupancy increases with increasing halo mass. We project the XMM-COSMOS 2PCF measurements to forecast the required survey parameters needed in future AGN clustering studies to enable higher precision HOD constraints and determinations of key physical parameters like the satellite fraction and duty cycle. We find that N {sup 2}/A {approx} 5 Multiplication-Sign 10{sup 6} deg{sup -2} (with N the number of AGNs in a survey area of A deg{sup 2}) is sufficient to constrain the HOD parameters at the 10% level, which is easily achievable by upcoming and proposed X-ray surveys.

Richardson, Jonathan [Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL 60605 (United States); Chatterjee, Suchetana; Myers, Adam D. [Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82072 (United States); Zheng Zheng [Department of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112 (United States); Hickox, Ryan, E-mail: jonathan.richardson@uchicago.edu, E-mail: schatte1@uwyo.edu [Department of Physics and Astronomy, Dartmouth College, Hanover, NH 03755 (United States)

2013-09-10T23:59:59.000Z

219

FUSE Observations of Interstellar and Intergalactic Absorption Toward the X-ray Bright BL Lac Object Mrk 421  

E-Print Network (OSTI)

High-quality Far-Ultraviolet Spectroscopic Explorer (FUSE) observations at 20 km /s resolution of interstellar and intergalactic absorption from 910 to 1187 A are presented for the X-ray bright BL Lac object Mrk 421. In this study we consider the O VI absorption between -140 to 165 km /s and its relationship to the lower ionization absorption and to the strong absorption produced by O VII and O VIII at X-ray wavelengths. The O VI absorption extending from -140 to 60 km /s is associated with strong low ionization gas absorption and originates in the Galactic thick disk / halo. This O VI appears to be produced by a combination of processes, including conductive interfaces between warm and hot gas and possibly cooling Galactic Fountain gas and hot halo gas bubbles. The O VI absorption extending from 60 to 165 km /s has unusual ionization properties in that there is very little associated low ionization absorption, with the exception of C III. This absorption is not observed toward two foreground halo stars, implying that it occurs in gas more distant than 3.5 kpc from the Galactic disk. Over the 60 to 165 km/s velocity range, O VI and C III absorption have the same kinematic behavior. N(O VI)/N(C III) = 10+/-3 over the 60 to 120 km/s velocity range. Given the association of O VI with C III, it is unlikely that the high velocity O VI co-exists with the hotter gas responsible for the O VII and O VIII absorption. The O VI positive velocity absorption wing might be tracing cooler gas entrained in a hot Galactic Fountain outflow. The O VII and O VIII absorption observed by Chandra and XMM-Newton may trace the hot gas in a highly extended (~100 kpc) Galactic corona or hot gas in the Local Group.

B. D. Savage; B. P. Wakker; A. J. Fox; K. R. Sembach

2004-12-15T23:59:59.000Z

220

Photography's bright future  

Science Conference Proceedings (OSTI)

Researchers working in computational photography are using computer vision, computer graphics, and applied optics to bring a vast array of new capabilities to digital cameras.

Kirk L. Kroeker

2009-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

FERMI LARGE AREA TELESCOPE DETECTION OF BRIGHT {gamma}-RAY OUTBURSTS FROM THE PECULIAR QUASAR 4C +21.35  

SciTech Connect

In this paper, we report on the two-year-long Fermi-Large Area Telescope observation of the peculiar blazar 4C +21.35 (PKS 1222+216). This source was in a quiescent state from the start of the science operations of the Fermi Gamma-ray Space Telescope in 2008 August until 2009 September, and then became more active, with gradually increasing flux and some moderately bright flares. In 2010 April and June, 4C +21.35 underwent a very strong GeV outburst composed of several major flares characterized by rise and decay timescales of the order of a day. During the outburst, the GeV spectra of 4C +21.35 displayed a broken power-law form with spectral breaks observed near 1-3 GeV photon energies. We demonstrate that, at least during the major flares, the jet in 4C +21.35 carried a total kinetic luminosity comparable to the total accretion power available to feed the outflow. We also discuss the origin of the break observed in the flaring spectra of 4C +21.35. We show that, in principle, a model involving annihilation of the GeV photons on the He II Lyman recombination continuum and line emission of 'broad-line region' clouds may account for such. However, we also discuss the additional constraint provided by the detection of 4C +21.35 at 0.07-0.4 TeV energies by the MAGIC telescope, which coincided with one of the GeV flares of the source. We argue that there are reasons to believe that the {approx}< TeV emission of 4C +21.35 (as well as the GeV emission of the source, if co-spatial) is not likely to be produced inside the broad-line region zone of highest ionization ({approx}10{sup 17} cm from the nucleus), but instead originates further away from the active center, namely, around the characteristic scale of the hot dusty torus surrounding the 4C +21.35 nucleus ({approx}10{sup 19} cm).

Tanaka, Y. T.; Stawarz, L.; Saito, S.; Ohno, M.; Takahashi, T. [Institute of Space and Astronautical Science, JAXA, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 (Japan); Thompson, D. J. [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); D'Ammando, F. [IASF Palermo, 90146 Palermo (Italy); Fegan, S. J. [Laboratoire Leprince-Ringuet, Ecole Polytechnique, CNRS/IN2P3, Palaiseau (France); Lott, B.; Escande, L. [Universite Bordeaux 1, CNRS/IN2p3, Centre d'Etudes Nucleaires de Bordeaux Gradignan, 33175 Gradignan (France); Wood, D. L.; Finke, J. [Space Science Division, Naval Research Laboratory, Washington, DC 20375 (United States); Cheung, C. C. [National Research Council Research Associate, National Academy of Sciences, Washington, DC 20001 (United States); Buson, S. [Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova (Italy); Donato, D. [Center for Research and Exploration in Space Science and Technology (CRESST) and NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Chiang, J. [W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305 (United States); Giroletti, M. [INAF Istituto di Radioastronomia, 40129 Bologna (Italy); Schinzel, F. K. [Max-Planck-Institut fuer Radioastronomie, Auf dem Huegel 69, 53121 Bonn (Germany); Iafrate, G.; Longo, F., E-mail: tanaka@astro.isas.jaxa.jp [Istituto Nazionale di Fisica Nucleare, Sezione di Trieste, I-34127 Trieste (Italy)

2011-05-20T23:59:59.000Z

222

THE OUTER DISKS OF EARLY-TYPE GALAXIES. II. SURFACE-BRIGHTNESS PROFILES OF UNBARRED GALAXIES AND TRENDS WITH HUBBLE TYPE  

Science Conference Proceedings (OSTI)

We present azimuthally averaged radial profiles of R-band surface brightness for a complete sample of 47 early-type, unbarred galaxies, as a complement to our previous study of early-type barred galaxies. Following very careful sky subtraction, the profiles can typically be determined down to brightness levels well below 27 mag arcsec{sup -2} and in the best cases below 28 mag arcsec{sup -2}. We classified the profiles according to the scheme used previously for the barred sample: Type I profiles are single unbroken exponential radial declines in brightness; Type II profiles ('truncations') have an inner shallow slope (usually exponential) which changes at a well-defined break radius to a steeper exponential; and Type III profiles ('antitruncations') have an inner exponential that is steeper, giving way to a shallower outer (usually exponential) decline. By combining these profiles with previous studies, we can make the first clear statements about the trends of outer-disk-profile types along the Hubble sequence (including both barred and unbarred galaxies), and their global frequencies. We find that Type I profiles are most frequent in early-type disks, decreasing from one-third of all S0-Sa disks to barely 10% of the latest-type spirals. Conversely, Type II profiles (truncations) increase in frequency with Hubble type, from only {approx}25% of S0 galaxies to {approx}80% of Sd-Sm spirals. Overall, the fractions of Type I, II, and III profiles for all disk galaxies (Hubble types S0-Sm) are 21%, 50%, and 38%, respectively; this includes galaxies ({approx}8% of the total) with composite Type II+III profiles (counted twice). Finally, we note the presence of bars in 10 galaxies previously classified (optically) as 'unbarred'. This suggests that {approx}20% of optically unbarred galaxies are actually barred; the bars in such cases can be weak, obscured by dust, or so large as to be mistaken for the main disk of the galaxy.

Gutierrez, Leonel [Universidad Nacional Autonoma de Mexico, Instituto de Astronomia, Ensenada, B. C. (Mexico); Erwin, Peter [Max-Planck-Insitut fuer extraterrestrische Physik, 85748 Garching (Germany); Aladro, Rebeca; Beckman, John E., E-mail: leonel@astrosen.unam.mx, E-mail: r.aladro@ucl.ac.uk, E-mail: jeb@iac.es, E-mail: erwin@mpe.mpg.de [Instituto de Astrofisica de Canarias, Tenerife (Spain)

2011-11-15T23:59:59.000Z

223

THE BRIGHT END OF THE ULTRAVIOLET LUMINOSITY FUNCTION AT z {approx} 8: NEW CONSTRAINTS FROM CANDELS DATA IN GOODS-SOUTH  

Science Conference Proceedings (OSTI)

We present new z {approx} 8 galaxy candidates from a search over {approx}95 arcmin{sup 2} of WFC3/IR data, tripling the previous search area for bright z {approx} 8 galaxies. Our analysis uses newly acquired WFC3/IR imaging data from the CANDELS Multi-Cycle Treasury program over the GOODS-South field. These new data are combined with existing deep optical Advanced Camera for Surveys (ACS) imaging to search for relatively bright (M {sub UV} search area, we identify 16 candidate z {approx} 8 galaxies, spanning a magnitude range H {sub 160,AB} = 25.7-27.9 mag. The new data show that the UV LF is a factor {approx}1.7 lower at M {sub UV} < -19.5 mag than determined from the HUDF09 and Early Release Science (ERS) data alone. Combining this new sample with the previous candidates from the HUDF09 and ERS data allows us to perform the most accurate measurement of the z {approx} 8 UV LF yet. Schechter function fits to the combined data result in a best-fit characteristic magnitude of M {sub *}(z = 8) = -20.04 {+-} 0.46 mag. The faint-end slope is very steep, though quite uncertain, with {alpha} = -2.06 {+-} 0.32. A combination of wide-area data with additional ultra-deep imaging will be required to significantly reduce the uncertainties on these parameters in the future.

Oesch, P. A.; Illingworth, G. D.; Gonzalez, V.; Magee, D. [UCO/Lick Observatory, University of California, Santa Cruz, CA 95064 (United States); Bouwens, R. J.; Franx, M.; Labbe, I. [Leiden Observatory, Leiden University, NL-2300 RA Leiden (Netherlands); Trenti, M. [Center for Astrophysics and Space Astronomy, University of Colorado, 389-UCB, Boulder, CO 80309 (United States); Van Dokkum, P. G. [Department of Astronomy, Yale University, New Haven, CT 06520 (United States); Carollo, C. M., E-mail: poesch@ucolick.org [Institute for Astronomy, ETH Zurich, 8092 Zurich (Switzerland)

2012-11-10T23:59:59.000Z

224

Use of Coherent Transition Radiation to Set Up the APS RF Thermionic Gun to Produce High-Brightness Beams for SASE FEL Experiments  

E-Print Network (OSTI)

We describe use of the Advanced Photon Source (APS) rf thermionic gun, alpha magnet beamline, and linac to produce a stable high-brightness beam in excess of 100 amperes peak current with normalized emittance of 10 pi mm-mrad. To obtain peak currents greater than 100 amperes, the rf gun system must be tuned to produce a FWHM bunch length on the order of 350 fs. Bunch lengths this short are measured using coherent transition radiation (CTR) produced when the rf gun beam, accelerated to 40 MeV, strikes a metal foil. The CTR is detected using a Golay detector attached to one arm of a Michelson interferometer. The alpha magnet current and gun rf phase are adjusted so as to maximize the CTR signal at the Golay detector, which corresponds to the minimum bunch length. The interferometer is used to measure the autocorrelation of the CTR radiation. The minimum phase approximation is used to derive the bunch profile from the autocorrelation. The high-brightness beam is accelerated to 217 MeV and used to produce SASE in...

Sereno, N S; Lumpkin, Alex H; Sereno, Nicholas; Borland, Michael; Lumpkin, Alex

2000-01-01T23:59:59.000Z

225

USE OF COHERENT TRANSITION RADIATION TO SET UP THE APS RF THERMIONIC GUN TO PRODUCE HIGH-BRIGHTNESS BEAMS FOR SASE FEL EXPERIMENTS ?  

E-Print Network (OSTI)

We describe use of the Advanced Photon Source (APS) rf thermionic gun [1], alpha-magnet beamline, and linac [2] to produce a stable high-brightness beam in excess of 100 amperes peak current with normalized emittance of 10 ? mm-mrad. To obtain peak currents greater than 100 amperes, the rf gun system must be tuned to produce a FWHM bunch length on the order of 350 fs. Bunch lengths this short are measured using coherent transition radiation (CTR) produced when the rf gun beam, accelerated to 40 MeV, strikes a metal foil. The CTR is detected using a Golay detector attached to one arm of a Michelson interferometer. The alpha-magnet current and gun rf phase are adjusted so as to maximize the CTR signal at the Golay detector, which corresponds to the minimum bunch length. The interferometer is used to measure the autocorrelation of the CTR. The minimum phase approximation [3] is used to derive the bunch profile from the autocorrelation. The high-brightness beam is accelerated to 217 MeV and used to produce self-amplified spontaneous emission (SASE) in five APS undulators installed in the Low- Energy Undulator Test Line (LEUTL) experiment hall [4]. Initial optical measurements showed a gain length of 1.3 m at 530 nm. 1

unknown authors

2000-01-01T23:59:59.000Z

226

HAT-P-34b-HAT-P-37b: FOUR TRANSITING PLANETS MORE MASSIVE THAN JUPITER ORBITING MODERATELY BRIGHT STARS  

SciTech Connect

We report the discovery of four transiting extrasolar planets (HAT-P-34b-HAT-P-37b) with masses ranging from 1.05 to 3.33 M{sub J} and periods from 1.33 to 5.45 days. These planets orbit relatively bright F and G dwarf stars (from V = 10.16 to V = 13.2). Of particular interest is HAT-P-34b which is moderately massive (3.33 M{sub J}), has a high eccentricity of e = 0.441 {+-} 0.032 at a period of P = 5.452654 {+-} 0.000016 days, and shows hints of an outer component. The other three planets have properties that are typical of hot Jupiters.

Bakos, G. A.; Hartman, J. D.; Csubry, Z.; Penev, K. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States); Torres, G.; Beky, B.; Latham, D. W.; Bieryla, A.; Quinn, S.; Szklenar, T.; Esquerdo, G. A.; Noyes, R. W. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Buchhave, L. A. [Niels Bohr Institute, University of Copenhagen, DK-2100, Denmark, and Centre for Star and Planet Formation, Natural History Museum of Denmark, DK-1350 Copenhagen (Denmark); Kovacs, G. [Konkoly Observatory, Budapest (Hungary); Shporer, A. [LCOGT, 6740 Cortona Drive, Santa Barbara, CA (United States); Fischer, D. A. [Astronomy Department, Yale University, New Haven, CT (United States); Johnson, J. A. [California Institute of Technology, Department of Astrophysics, MC 249-17, Pasadena, CA (United States); Howard, A. W.; Marcy, G. W. [Department of Astronomy, University of California, Berkeley, CA (United States); Sato, B., E-mail: gbakos@astro.princeton.edu [Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan); and others

2012-07-15T23:59:59.000Z

227

Low surface brightness galaxies rotation curves in the low energy limit of $R^n$ gravity : no need for dark matter?  

E-Print Network (OSTI)

We investigate the possibility that the observed flatness of the rotation curves of spiral galaxies is not an evidence for the existence of dark matter haloes, but rather a signal of the breakdown of General Relativity. To this aim, we consider power - law fourth order theories of gravity obtained by replacing the scalar curvature $R$ with $f(R) = f_0 R^n$ in the gravity Lagrangian. We show that, in the low energy limit, the gravitational potential generated by a pointlike source may be written as $\\Phi(r) \\propto r^{-1} \\left [ 1 + (r/r_c)^{\\beta} \\right ]$ with $\\beta$ a function of the slope $n$ of the gravity Lagrangian and $r_c$ a scalelength depending on the gravitating system properties. In order to apply the model to realistic systems, we compute the modified potential and the rotation curve for spherically symmetric and for thin disk mass distributions. It turns out that the potential is still asymptotically decreasing, but the corrected rotation curve, although not flat, is higher than the Newtonian one thus offering the possibility to fit rotation curves without dark matter. To test the viability of the model, we consider a sample of 15 low surface brightness (LSB) galaxies with combined HI and H$\\alpha$ measurements of the rotation curve extending in the putative dark matter dominated region. We find a very good agreement between the theoretical rotation curve and the data using only stellar disk and interstellar gas.

S. Capozziello; V. F. Cardone; A. - Troisi

2006-03-20T23:59:59.000Z

228

Bright Future for CPV (Presentation)  

DOE Green Energy (OSTI)

Concentrator photovoltaics may play significant role in growth of solar electricity because of scalability. Need to take a bird?s eye view for the design and a worm?s eye view for diagnosis.

Kurtz, S.

2009-02-03T23:59:59.000Z

229

Bright Ideas and Better Detectors  

Office of Science (SC) Website

to cover large areas with a modest number of electronics channels. This streamlined system will allow photodetectors to quickly scan objects as large as trucks for nuclear...

230

Bright Idea Illuminates LED Standards  

Science Conference Proceedings (OSTI)

... the pulse measurement results that LED manufacturers use. ... that the optical and electrical characteristics of ... last much longer at lower temperatures. ...

2011-04-25T23:59:59.000Z

231

Letting the Sun Shine on Solar Costs: An Empirical Investigation of Photovoltaic Cost Trends in California  

SciTech Connect

This report provides a comprehensive analysis of grid-connected solar photovoltaic (PV) cost trends in California, which is by far the largest PV market in the United States. The findings of this work may help stakeholders to understand important trends in the California PV market, and policymakers to design more effective solar incentive programs--a particularly important objective given the recent announcement from the California Public Utilities Commission (CPUC) to establish an 11-year, $3.2 billion incentive program for customer-sited solar. The study statistically analyzes the installed cost of grid-connected PV systems funded by the state's two largest solar rebate programs, overseen by the California Energy Commission (CEC) [operating since 1998] and the CPUC [operating since 2001].

Wiser, R.; Bolinger, M.; Cappers, P.; Margolis, R.

2006-01-01T23:59:59.000Z

232

Letting The Sun Shine On Solar Costs: An Empirical Investigation Of Photovoltaic Cost Trends In California  

E-Print Network (OSTI)

PHOTOVOLTAIC COST TRENDS IN CALIFORNIA Ryan Wiser Lawrencein the United States: California. We find that: (1) solarof PV system costs in California. Through mid-November 2005,

Wiser, Ryan; Bolinger, Mark; Cappers, Peter; Margolis, Robert

2006-01-01T23:59:59.000Z

233

SESAME and the APS: Opening Doors Helps the Light Shine In  

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

and Applications in the Middle East light-source facility under construction in Jordan that is bringing together scientists from several Middle Eastern countries. According...

234

PV Working with Industry Newsletter: 2000 and beyond. Our time to shine  

DOE Green Energy (OSTI)

NREL PV Working With Industry is a quarterly newsletter devoted to the research, development, and deployment performed by NREL staff in concert with their industry and university partners. The Third Quarter, 1999 issue focuses on planning activities of the National Center for Photovoltaics (NCPV), including the PV Industry 20-Year Roadmap and the National Photovoltaics Program Plan. The editorialist is Allen Barnett, president of AstroPower, Inc., and a member of the NCPV Advisory Board.

Moon, S.; Cook, G.; Poole, L.

1999-11-30T23:59:59.000Z

235

August 4, 2006 Eco-lights shine new hope on `gorillas in the mist'  

E-Print Network (OSTI)

of the Congo with ultra-efficient, solar-powered white light emitting diode (WLED) lighting systems and newly

Calgary, University of

236

Letting the Sun Shine on Solar Costs: An Empirical Investigation of Photovoltaic Cost Trends in California  

DOE Green Energy (OSTI)

This report provides a comprehensive analysis of grid-connected solar photovoltaic (PV) cost trends in California, which is by far the largest PV market in the United States. The findings of this work may help stakeholders to understand important trends in the California PV market, and policymakers to design more effective solar incentive programs--a particularly important objective given the recent announcement from the California Public Utilities Commission (CPUC) to establish an 11-year, $3.2 billion incentive program for customer-sited solar. The study statistically analyzes the installed cost of grid-connected PV systems funded by the state's two largest solar rebate programs, overseen by the California Energy Commission (CEC) [operating since 1998] and the CPUC [operating since 2001].

Wiser, R.; Bolinger, M.; Cappers, P.; Margolis, R.

2006-01-01T23:59:59.000Z

237

Calibrating the Cepheid Period-Luminosity relation from the infrared surface brightness technique I. The p-factor, the Milky Way relations, and a universal K-band relation  

E-Print Network (OSTI)

We determine Period-Luminosity relations for Milky Way Cepheids in the optical and near-IR bands. These relations can be used directly as reference for extra-galactic distance determination to Cepheid populations with solar metallicity, and they form the basis for a direct comparison with relations obtained in exactly the same manner for stars in the Magellanic Clouds, presented in an accompanying paper. In that paper we show that the metallicity effect is very small and consistent with a null effect, particularly in the near-IR bands, and we combine here all 111 Cepheids from the Milky Way, the LMC and SMC to form a best relation. We employ the near-IR surface brightness (IRSB) method to determine direct distances to the individual Cepheids after we have recalibrated the projection factor using the recent parallax measurements to ten Galactic Cepheids and the constraint that Cepheid distances to the LMC should be independent of pulsation period. We confirm our earlier finding that the projection factor for c...

Storm, J; Fouque, P; Barnes, T G; Pietrzynski, G; Nardetto, N; Weber, M; Granzer, T; Strassmeier, K

2011-01-01T23:59:59.000Z

238

Bright three-band white light generated from CdSe/ZnSe quantum dot-assisted Sr{sub 3}SiO{sub 5}:Ce{sup 3+},Li{sup +}-based white light-emitting diode with high color rendering index  

SciTech Connect

In this study, bright three-band white light was generated from the CdSe/ZnSe quantum dot (QD)-assisted Sr{sub 3}SiO{sub 5}:Ce{sup 3+},Li{sup +}-based white light-emitting diode (WLED). The CdSe/ZnSe core/shell structure was confirmed by energy dispersive x-ray spectroscopy and x-ray photoelectron spectroscopy. The CdSe/ZnSe QDs showed high quantum efficiency (79%) and contributed to the high luminous efficiency ({eta}{sub L}) of the fabricated WLED. The WLED showed bright natural white with excellent color rendering property ({eta}{sub L}=26.8 lm/W, color temperature=6140 K, and color rendering index=85) and high stability against the increase in forward bias currents from 20 to 70 mA.

Jang, Ho Seong; Kwon, Byoung-Hwa; Jeon, Duk Young [Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 373-1, Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Yang, Heesun [Department of Materials Science and Engineering, Hongik University, 72-1, Sangsu-dong, Mapo-gu, Seoul 121-791 (Korea, Republic of)

2009-10-19T23:59:59.000Z

239

THE XMM-NEWTON X-RAY SPECTRA OF THE MOST X-RAY LUMINOUS RADIO-QUIET ROSAT BRIGHT SURVEY-QSOs: A REFERENCE SAMPLE FOR THE INTERPRETATION OF HIGH-REDSHIFT QSO SPECTRA  

SciTech Connect

We present the broadband X-ray properties of four of the most X-ray luminous (L{sub X} {>=} 10{sup 45} erg s{sup -1} in the 0.5-2 keV band) radio-quiet QSOs found in the ROSAT Bright Survey. This uniform sample class, which explores the extreme end of the QSO luminosity function, exhibits surprisingly homogenous X-ray spectral properties: a soft excess with an extremely smooth shape containing no obvious discrete features, a hard power law above 2 keV, and a weak narrow/barely resolved Fe K{alpha} fluorescence line for the three high signal-to-noise ratio (S/N) spectra. The soft excess can be well fitted with only a soft power law. No signatures of warm or cold intrinsic absorbers are found. The Fe K{alpha} centroids and the line widths indicate emission from neutral Fe (E = 6.4 keV) originating from cold material from distances of only a few light days or further out. The well-constrained equivalent widths (EW) of the neutral Fe lines are higher than expected from the X-ray Baldwin effect which has been only poorly constrained at very high luminosities. Taking into account our individual EW measurements, we show that the X-ray Baldwin effect flattens above L{sub X} {approx} 10{sup 44} erg s{sup -1} (2-10 keV band) where an almost constant (EW) of {approx}100 eV is found. We confirm the assumption of having very similar X-ray active galactic nucleus properties when interpreting stacked X-ray spectra. Our stacked spectrum serves as a superb reference for the interpretation of low S/N spectra of radio-quiet QSOs with similar luminosities at higher redshifts routinely detected by XMM-Newton and Chandra surveys.

Krumpe, M.; Markowitz, A. [University of California, San Diego, Center for Astrophysics and Space Sciences, 9500 Gilman Drive, La Jolla, CA 92093-0424 (United States); Lamer, G. [Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam (Germany); Corral, A., E-mail: mkrumpe@ucsd.ed [INAF-Osservatorio Astronomico di Brera, via Brera 28, 20121 Milan (Italy)

2010-12-20T23:59:59.000Z

240

Bright Lights and Even Brighter Ideas  

Office of Science (SC) Website

recipe beyond EuAlO) altered the colors that they threw. These insights could lead to LED phosphors that not only throw something closer to sunlight, but are also far more...

Note: This page contains sample records for the topic "all-stars shine bright" 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

A bright green perspective on sustainable choices  

Science Conference Proceedings (OSTI)

We present a qualitative study of 35 United States households whose occupants have made significant accommodations to their homes and behaviors in order to be more environmentally responsible. Our goal is to inform the design of future sustainable technologies ... Keywords: domestic technology, environmental technology, green, qualitative studies, sustainable interaction design

Allison Woodruff; Jay Hasbrouck; Sally Augustin

2008-04-01T23:59:59.000Z

242

ARM - Measurement - Microwave narrowband brightness temperature  

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

A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation in the same narrow bands of wavelengths....

243

ARM - Measurement - Longwave spectral brightness temperature  

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

A descriptive measure of radiation in terms of the temperature of a hypothetical black body emitting an identical amount of radiation at the same spectrally resolved wavelengths....

244

Available Technologies: Source for High Brightness Multiple ...  

Biofuels; Biotechnology & Medicine. ... step-wise movement of the beamlets relative to the target substrate enables devices to be directly e-beam written.

245

Explorations of the Bright and Dark Universe  

E-Print Network (OSTI)

have light bulbs: SUPERNOVAE ! #12;ExpansionoftheUniverse Time Present10 billion years ago #12;Dark 965965 #12;2 Million Light Years Andromeda Galaxy Observed as it was 2 million years ago. 12 Billion Light Years Distant galax observed as i serving distant objects _Looking into the p #12;Microwave

Leka, K. D .

246

Sustainable > DI BrightGreen January 2010  

E-Print Network (OSTI)

Incineration > Waste Water and Recycling > Wind Power > Wave Power Intelligent Energy > Automated Meter Heat and Power Plants > District Heating and Cooling > Energy Efficient Building Materials > Energy Efficient Power Plants > Fire Fighting ­ Marine and/ or Land Application > Flue and Waste Gas Cleaning

247

Accelerator Technology for Bright Radiation Beam  

E-Print Network (OSTI)

AP~ .bI.Qdulators I I to NSLS X1 '" PEP ci undulatorI J I I NSLS bend (2,5 GeV) Cu K o o Cl. C/) (J') c:: CJ) Mo

Kim, K.-J.

2011-01-01T23:59:59.000Z

248

Accelerator Technology for Bright Radiation Beam  

E-Print Network (OSTI)

is to construct user facilities. In the short wavelengthof criteria required for a user facility. An important such

Kim, K.-J.

2011-01-01T23:59:59.000Z

249

MEASURING EXTREMEMLY BRIGHT PUSLES OF LIGHT  

(top) At the Linac Coherent Light Source facility, new energy ... is essential because the parameters determine how the beam interacts with the ...

250

The Future Looks Bright for Teraflop Computing  

Science Conference Proceedings (OSTI)

Wouldn’t it be great to have a teraflop of computing power sitting in your lab, desktop workstation, or remote instrument server? Talk about simplifying workflows, eliminating competition for HPC resources, and allowing more scientists and technicians to get more work done! Well, the computer industry is marketing that capability now in the form of high-end video cards – and for a bargain price – with more and better technology on the market horizon. As the industry evolves to become more oriented toward multi-core and multi-threaded hardware; video card manufacturers are attempting to transition from a niche to multi-purpose market. One of the products currently getting attention is the Nvidia Tesla family of products based on the Tesla GPGPU (general purpose graphics processing unit). This card contains 128 processor computing core engines advertised as having the ability to deliver an aggregate 518 billion single-precision floating operations per second (518 Gflop), which is being introduced at a $1499 MSRP price-point. Nvidia also offers other commodity graphics cards, such as the GeForce 8800, which appear on paper to have roughly the same performance for roughly half the price – although with half the memory (768M vs the Tesla 1.5 GB). This highlights how the Tesla GPGPUs are essentially redesigned graphics cards (with no video capability, increased memory, and clock changes) that fit into PCI-Express slots in your motherboard. If you believe Nvidia’s claims, two Tesla cards will - for the right applications - turn your lab workstation into a teraflop capable supercomputer. Double-precision versions are projected for a late 2007 introduction with expected 2008 delivery. The Nvidia Tesla GPGPU is one step forward in the many-core revolution that is happening in the computer industry. Instead of making two or four processing cores available to the user, many-core processors offer tens or hundreds of processing cores. Many-core processors promise to provide very high performance-per-dollar and performance-per-watt for many computational workloads. Intel is working on their version of many-core processors but delivery dates appear to be several years in the future. Last year Intel made a large splash with their proof-of-concept teraflop 80-core chip, which they announced might be available sometime in 2011. Intel is also working on something similar to the Nvidia Tesla – codename Larrabee – which will perform in the teraflop range and has a release date of sometime around 2009 or 2010. Larrabee is supposed to have 16 – 24 cores and several nice features. Bottom line: A teraflop lab computer is feasible today as the programmable Nvidia GeForce 8 and Quadro family of graphics cards are available now, Tesla cards will be shipping, and exciting many-core architectures are on the horizon from a number of vendors. Definitely, the potential for parallel processing systems is huge, and GPGPUs certainly provide parallel processing, but are there enough applications out there to take them mainstream and make it more appealing to businesses other than just research firms? Only time will tell as more applications are developed to utilize this computational capability. Right now, programming is required. Recently Google purchased PeakStream, a firm that engaged in abstracting the task of running multiple threads to software with specific GPGPU applicability. However, Google is a visionary software company. Instrument vendors and much of the software industry are still in the early stages of the transition to multi-threaded many-core data processing. Applications that exploit the full potential of parallel processing systems, and GPGPUs in particular, really don’t exist in today’s market. The development of Matlab plug-ins is a very positive sign for the future of GPGPUs and is indicative of Nvidia’s sense of where the market is headed.

Farber, Rob

2007-11-01T23:59:59.000Z

251

Bright Future for GaN Nanowires  

Science Conference Proceedings (OSTI)

... Recently they found that by creating a grid-like pattern of openings on the order of ... "That's an advantage for high electrical power applications." The ...

2011-11-28T23:59:59.000Z

252

High-brightness, high-spatial-resolution, 6.151 keV x-ray imaging of inertial confinement fusion capsule implosion and complex hydrodynamics experiments on Sandia's Z accelerator (invited)  

SciTech Connect

When used for the production of an x-ray imaging backlighter source on Sandia National Laboratories' 20 MA, 100 ns rise-time Z accelerator [M. K. Matzen et al., Phys. Plasmas 12, 055503 (2005)], the terawatt-class, multikilojoule, 526.57 nm Z-Beamlet laser (ZBL) [P. K. Rambo et al., Appl. Opt. 44, 2421 (2005)], in conjunction with the 6.151 keV, Mn-He{sub {alpha}} curved-crystal imager [D. B. Sinars et al., Rev. Sci. Instrum. 75, 3672 (2004)], is capable of providing a high quality x radiograph per Z shot for various high-energy-density physics experiments. Enhancements to this imaging system during 2005 have led to the capture of inertial confinement fusion capsule implosion and complex hydrodynamics images of significantly higher quality. The three main improvements, all leading effectively to enhanced image plane brightness, were bringing the source inside the Rowland circle to approximately double the collection solid angle, replacing direct exposure film with Fuji BAS-TR2025 image plate (read with a Fuji BAS-5000 scanner), and generating a 0.3-0.6 ns, {approx}200 J prepulse 2 ns before the 1.0 ns, {approx}1 kJ main pulse to more than double the 6.151 keV flux produced compared with a single 1 kJ pulse. It appears that the 20{+-}5 {mu}m imaging resolution is limited by the 25 {mu}m scanning resolution of the BAS-5000 unit, and to this end, a higher resolution scanner will replace it. ZBL is presently undergoing modifications to provide two temporally separated images ('two-frame') per Z shot for this system before the accelerator closes down in summer 2006 for the Z-refurbished (ZR) upgrade. In 2008, after ZR, it is anticipated that the high-energy petawatt (HEPW) addition to ZBL will be completed, possibly allowing high-energy 11.2224 and 15.7751 keV K{alpha}{sub 1} curved-crystal imaging to be performed. With an ongoing several-year project to develop a highly sensitive multiframe ultrafast digital x-ray camera (MUDXC), it is expected that two-frame HEPW 11 and 16 keV imaging and four-frame ZBL 6.151 keV curved-crystal imaging will be possible. MUDXC will be based on the technology of highly cooled silicon and germanium photodiode arrays and ultrafast, radiation-hardened integrated circuitry.

Bennett, G. R.; Sinars, D. B.; Wenger, D. F.; Cuneo, M. E.; Adams, R. G.; Barnard, W. J.; Beutler, D. E.; Burr, R. A.; Campbell, D. V.; Claus, L. D.; Foresi, J. S.; Johnson, D. W.; Keller, K. L.; Lackey, C.; Leifeste, G. T.; McPherson, L. A.; Mulville, T. D.; Neely, K. A.; Rambo, P. K.; Rovang, D. C. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185-1106 (United States)] (and others)

2006-10-15T23:59:59.000Z

253

Searching for life where the sun don't shine : explorations to the seafloors of Earth and Europa  

E-Print Network (OSTI)

Hydrothermal vents on Earth's seafloor host entire ecosystems that live off energy from chemosynthesis rather than photosynthesis. This energy process uses chemical reactions between metals and hot gases from inside Earth's ...

Fitzpatrick, Garret R

2012-01-01T23:59:59.000Z

254

News Item  

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

Combinatorial Nanoscience Shines in Pure Colors Combinatorial Nanoscience Shines in Pure Colors Green/red purity vs. total intensity, observed in the various lanthanide ion combinations. The Molecular Foundry's Delia Milliron and colleagues have employed a powerful combinatorial approach to synthesize nanocrystals that glow in bright, pure colors when excited with near infrared light. - a process known as upconversion. These nanocrystals may allow for biological imaging with less harmful radiation than current methods, and can be more easily tracked and quantified due to their single color emission. Milliron's team used a wide-sweeping approach to identify promising lanthanide ion combinations, using the automatic synthesis robot, WANDA, able to perform 96 different reactions in parallel. Ultimately four

255

Tracking the Sun: The Installed Cost of Photovoltaics in the U.S. from 1998-2007  

E-Print Network (OSTI)

2006. Letting the Sun Shine on Solar Costs: An Empiricalreport, Letting the Sun Shine on Solar Costs: An Empirical2006. Letting the Sun Shine on Solar Costs: An Empirical

Wiser, Ryan

2009-01-01T23:59:59.000Z

256

lnstructions lnstallation and Operation  

Science Conference Proceedings (OSTI)

... O'Cedar Cream Polish, Stainless Shine. or Wind-O-Shine. ... 4 (polished) linish. May scratch No. 2 (mill) and Nos. 7 and I (polished) linishes. ...

2011-05-18T23:59:59.000Z

257

Photo of the Week: Bright Ideas | Department of Energy  

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

two of history's most important energy-related engineers: Thomas Edison and Nikola Tesla. Edison and Tesla's developments in electric power generation and distribution made...

258

Light Wars: The Bright Future of Laser Weapons  

E-Print Network (OSTI)

October 15, 2007). 3. Heat Capacity Laser. 2007. http://water to The Solid-State Heat Capacity Laser at LLNL removethe equipment (Parker Heat capacity lasers are solid-state

Mistry, Hemma

2009-01-01T23:59:59.000Z

259

Bright Lights From Dark Places | Department of Energy  

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

used the illumination of some 14,000 quasars -- powered by gigantic black holes at the heart of galaxies -- about 10 to 12 billion light years away to create the new map....

260

58 Radio Sources Near Bright Natural Guide Stars  

E-Print Network (OSTI)

We present a preliminary survey of 58 radio sources within the isoplanatic patches (r 1) that are now within the capabilities of the current generation of AO-fed integral-field spectrographs. These objects constitute a unique sample that can be used for detailed ground-based AO studies of galactic structure, evolution, and AGN formation at high redshift.

Stalder, B; Vacca, William D

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

Production, development outlook bright on Alaska North Slope  

SciTech Connect

Alaskan North Slope operators continue to press efforts to bolster oil flow from currently producing fields in the province, notably giants Prudhoe Bay and Kuparuk River. This is occurring against a backdrop of an improving political climate at the federal and state levels for the future of North Slope production. North Slope operators also have programs aimed at developing marginal fields and sustaining exploration. The paper discusses Prudhoe Bay developments, efforts to improve oil recovery, the Kuparuk River field, ARCO gas prospects, changing politics, and royalty changes.

NONE

1995-06-26T23:59:59.000Z

262

A Bright Idea: New Efficiency Standards for Incandescent and...  

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

out" of less-efficient bulbs will begin with 100 watt bulbs in 2012; lesser wattage light bulbs will then be gradually removed from distribution, ending with noncompliant 40...

263

The Future is bright for Y-12 ? and diverse  

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

new technologies. The formation of NNSA allowed what was then termed the DOE Nuclear Weapons Complex to focus on our nation"s nuclear weapons facilities, infrastructure and...

264

Scientific Cooperation A Success Story with a Bright Future  

E-Print Network (OSTI)

areas ranging from hadron, nuclear and atomic physics to plasma research, radiation-biology, radiation

Rumolo, Giovanni

265

A bright millisecond radio burst of extragalactic origin  

E-Print Network (OSTI)

Pulsar surveys offer one of the few opportunities to monitor even a small fraction (~0.00001) of the radio sky for impulsive burst-like events with millisecond durations. In analysis of archival survey data, we have discovered a 30-Jy dispersed burst of duration <5 ms located three degrees from the Small Magellanic Cloud. The burst properties argue against a physical association with our Galaxy or the Small Magellanic Cloud. Current models for the free electron content in the Universe imply a distance to the burst of <1 Gpc No further bursts are seen in 90-hr of additional observations, implying that it was a singular event such as a supernova or coalescence of relativistic objects. Hundreds of similar events could occur every day and act as insightful cosmological probes.

D. R. Lorimer; M. Bailes; M. A. McLaughlin; D. J. Narkevic; F. Crawford

2007-09-27T23:59:59.000Z

266

Assimilating GOES Brightness Temperatures. Part I: Upper-Tropospheric Moisture  

Science Conference Proceedings (OSTI)

Imager channel 3 (at 6.7 ?m) on the Geostationary Operational Environmental Satellite (GOES) is particularly sensitive to water vapor in the atmosphere. Channel-3 data from both clear and cloudy regions are used in a new assimilation scheme to ...

William H. Raymond; Gary S. Wade; Tom H. Zapotocny

2004-01-01T23:59:59.000Z

267

Bright Lights and Even Brighter Ideas | Department of Energy  

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

nitride (InGaN) samples to a thickness of just 20 nanometers to prepare them for electron microscopy. | Photo courtesy of Brookhaven National Laboratory. Kim Kisslinger, a...

268

Publications Since 1983 1. Bright, DS, R. Myklebust, D. ...  

Science Conference Proceedings (OSTI)

... Maps in Electron Probe X-ray Microanalysis", Microscopy and Microanalysis 5 ... X-Ray Spectrometery in the Scanning Electron Microscope: A Tutorial ...

269

Bright Water- hydrosols, water conservation and climate change  

E-Print Network (OSTI)

Since air-water and water-air interfaces are equally refractive, cloud droplets and microbubbles dispersed in bodies of water reflect sunlight in much the same way. The lifetime of sunlight-reflecting microbubbles, and hence the scale on which they may be applied, depends on Stokes Law and the influence of ambient or added surfactants. Small bubbles backscatter light more efficiently than large ones, opening the possibility of using highly dilute micron-radius hydrosols to substantially brighten surface waters. Such microbubbles can noticeably increase water surface reflectivity, even at volume fractions of parts per million and such loadings can be created at an energy cost as low as J m-2 to initiate and milliwatts m-2 to sustain. Increasing water albedo in this way can reduce solar energy absorption by as much as 100 W m-2, potentially reducing equilibrium temperatures of standing water bodies by several Kelvins. While aerosols injected into the stratosphere tend to alter climate globally, hydrosols can be...

Seitz, Russell

2010-01-01T23:59:59.000Z

270

Bright White Light Emission from Ultrasmall Cadmium Selenide Nanocrystals  

Science Conference Proceedings (OSTI)

A simple treatment method using formic acid has been found to increase the fluorescence quantum yield of ultrasmall white light-emitting CdSe nanocrystals from 8% to 45%. Brighter white-light emission occurs with other carboxylic acids as well, and the magnitude of the quantum yield enhancement is shown to be dependent on the alkyl chain length. Additionally, the nanocrystal luminescence remains enhanced relative to the untreated nanocrystals over several days. This brightened emission opens the possibility for even further quantum yield improvement and potential for use of these white-light nanocrystals in solid-state lighting applications.

Rosson, Teresa [Vanderbilt University; Claiborne, Sarah [Vanderbilt University; McBride, James [Vanderbilt University; Stratton, Benjamin S [Vanderbilt University; Rosenthal, Sandra [ORNL

2012-01-01T23:59:59.000Z

271

A Bright Day for Solar Decathlon Winners - Materials Technology ...  

Science Conference Proceedings (OSTI)

Oct 20, 2009 ... This year's Solar Decathlon challenged 20 university teams to ... laundry, and washing dishes in a dishwasher five times during the competition.

272

On the Robustness of Cool Disc Components in Bright ULXs  

E-Print Network (OSTI)

In this letter, we comment on the robustness of putative cool (kT ~ 0.2 keV) accretion disc components in the X-ray spectra of the most luminous (L ~ 10^40 erg/s) ultra-luminous X-ray sources (ULXs) in nearby normal galaxies. When compared to stellar-mass black holes, the low disc temperatures observed in some ULXs may imply intermediate-mass black hole primaries. Recent work has claimed that such soft excesses are unlikely to be actual disc components, based on the lack of variability in these components, and in the overall source flux. Other work has proposed that alternative phenomenological models, and complex Comptonisation models, rule-out cool disc components in ULX spectra. An inspection of the literature on Galactic stellar-mass black holes and black hole candidates demonstrates that the flux behaviours seen in specific ULXs are consistent with phenomena observed in well-known Galactic X-ray binaries. Applying Comptonisation models to simulated disc blackbody plus power-law spectra shows that at the sensitivity achieved in even the best ULX spectra, Comptonisation fits are highly model-dependent, and do not yield meaningful constraints on the accretion flow. In contrast, the need for a soft, thermal component does not appear to be model-dependent. As we have previously noted, soft thermal components in ULX spectra may not represent accretion discs, but present alternatives to this interpretation are not robust.

J. M. Miller; A. C. Fabian; M. C. Miller

2005-12-22T23:59:59.000Z

273

Second completely revised edition Daniel Desbruyres, Michel Segonzac & Monika Bright  

E-Print Network (OSTI)

the increased computational load. Since all of these transactions are stored in the VAMPIRE database, no dataVAMPIRE microarray suite: a web-based platform for the interpretation of gene expression data of analysis, collectively known as variance-modeled posterior inference with regional exponentials (VAMPIRE

Oppo, Delia W.

274

Constraining Microwave Brightness Temperatures by Radar Brightband Observations  

Science Conference Proceedings (OSTI)

Multichannel microwave sensors make it possible to construct physically based rainfall retrieval algorithms. In these schemes, errors arising from the inaccuracy of the physical modeling of the cloud system under observation have to be accounted ...

A. Battaglia; C. Kummerow; Dong-Bin Shin; C. Williams

2003-06-01T23:59:59.000Z

275

EWEB - Bright Way To Heat Water Rebate (Oregon) | Open Energy...  

Open Energy Info (EERE)

Low Emission Development Strategies Oil & Gas Smart Grid Solar U.S. OpenLabs Utilities Water Wind Page Actions View form View source History View New Pages Recent Changes All...

276

Ashland Electric Utility - Bright Way to Heat Water Rebate |...  

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

Information Oregon Program Type Utility Rebate Program Rebate Amount 0.40annual kWh saved (on average 800 to 1,000) The City of Ashland Conservation Division offers a...

277

High brightness symmetric emittance rf photoinjector preliminary design report  

SciTech Connect

A preliminary design for a high bunch charge (8 nC), low emittance (< 20 mm-mr) radiofrequency electron photoinjector matched to the requirements of the Tesla Test Facility is presented. A 1.5 cell iris coupled {pi}mode structure with high average accelerating gradient is chosen for its high shunt impedance, simplicity, and ability to accommodate an externally mounted solenoid for simultaneous beam divergence control and emittance compensation. Beam optics are optimized for an overall injector consisting of the electron gun followed by one linac capture section, a dipole chicane for magnetic bunch compression to achieve a bunch length corresponding to {sigma}{sub z} = 1 mm. Electrical and beam dynamical aspects of the photoinjector design are presented. A description of the proposed experimental program is included.

Colby, E.R.; Ostiguy, J.F. [Fermi National Accelerator Lab., Batavia, IL (United States); Rosenzweig, J.B. [California Univ., Los Angeles, CA (United States). Dept. of Physics

1994-08-01T23:59:59.000Z

278

The first world atlas of the artificial night sky brightness  

E-Print Network (OSTI)

One of the most rapidly increasing alterations to the natural environment is the alteration of the ambient light levels in the night environment produced by man-made light.

P. Cinzano; F. Falchi; C. D. Elvidge

2001-01-01T23:59:59.000Z

279

Success Stories: Quantum Dots  

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

Quantum Dots Outshine the Competition for Biomedical Assays Quantum Dots Outshine the Competition for Biomedical Assays Quantum Dots (Qdots), nano-scale semiconductor crystals that emit a range of bright colors when excited by a light source such as a laser, are shining brightly these days. The Berkeley Lab developed technology has been licensed by Quantum Dot Corporation and is being used as fluorescence probes for biomedical assays. The technology just won an R & D 100 Award and Quantum Dot Corporation was named by Fortune magazine as one of 2004's "Cool Companies." Science honored the technology as one of the Top 10 Breakthroughs of the Year in 2003, and Nanotechnology Now named Quantum Dots as the Best Nanotech Product in 2003, among other honors. Quantum Dot Corporation (QDC) is a 1998 start-up biotechnology company

280

There is a good chance that hydrogen will be the shining star in the energy model of 2100. The primary factor that will determine the extent of  

E-Print Network (OSTI)

. However, if in this futuristic model the majority of the cars are converted to electric and a large been switched from chemical to electric. If there is still a limited amount of electrical demand portion of the total demand is switched to electric, then there will not be a need for hydrogen. Hydrogen

Krothapalli, Anjaneyulu

Note: This page contains sample records for the topic "all-stars shine bright" 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

Make Hay While the Sun Shines or be More Loyal Than the King? The Impact of External Labor Markets on the Technological Search Process within Firms.  

E-Print Network (OSTI)

??Past research on technological search has extensively studied the consequences of searching in different loci and in different manners. Less attention in given to the… (more)

Tandon, Vivek

2011-01-01T23:59:59.000Z

282

One "Cool Tool" That's Helping Repair Your DNA | Department of Energy  

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

"Cool Tool" That's Helping Repair Your DNA "Cool Tool" That's Helping Repair Your DNA One "Cool Tool" That's Helping Repair Your DNA April 18, 2011 - 1:20pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? Berkeley Lab's Advanced Light Source produces x-ray light that shines a billion times bright than the sun. Scientists discovered the motor that drives the actual repair of the DNA repair machine called MRN, which is tethered to the rest of the machine in a fairly flexible fashion. Further insight into MRN and other DNA repair machines may also give scientists new insights into fighting some cancers as well as other diseases such as cystic fibrosis. With the arrival of spring, many families are dusting off their tools to make some home improvements. It's worth remembering that nature also has

283

Recent News from the National Labs | Department of Energy  

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

19, 2011 19, 2011 At NREL's High-Intensity Pulse Solar Simulator, NREL's Keith Emery removes an array of multijunction solar cells produced by PV Incubator partner Solar Junction. The NREL instrument can produce the intensity of up to 90 suns. | Photo credit: Dennis Schroeder Advancing Solar Through Photovoltaic Technology Innovations A piece on a PV Technology Incubator program from the March 22 issue of the National Renewable Energy Lab (NREL) News. April 18, 2011 One "Cool Tool" That's Helping Repair Your DNA Berkeley Lab's Advanced Light Source produces x-ray light that shines a billion times bright than the sun - a tool that is giving insight insight into how cells perform the essential function of repairing damaged DNA. April 15, 2011 Blood flow visualization | Photo Courtesy of Argonne National Laboratory

284

NREL: Biomass Research - Chemical and Catalyst Science Capabilities  

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

Chemical and Catalyst Science Capabilities Chemical and Catalyst Science Capabilities A photo of a man in a white lab coat and dark goggles looking at a microscope. A bright green light shines down from the microscope lens and illuminates a round glass tray containing small white beads. The Laser Raman Spectrometer is used to obtain phase and structural identification information for catalysts used in the thermochemical conversion process. NREL researchers use chemical and catalyst science to assess and improve biochemical and thermochemical conversion throughout the processes, from analyzing feedstocks to improving the yield of desired end products. Catalyst Science Syngas produced during gasification contains tars that are contaminants, but these tars can be reformed to more syngas using tar-reforming

285

Cosmic Dawn: The First Star in the Universe  

SciTech Connect

What was the first thing in the Universe? A black hole or a star? How did it form? Even our biggest and best telescopes cannot tell us. Direct calculation with supercomputers, however, can. The first luminous objects in the Universe were very massive stars shining one million times as brightly as our sun. They died quickly and seeded the cosmos with the chemical elements necessary for life. One star at a time, galaxies started to assemble just one hundred million years after the Big Bang, and they are still growing now. Join Dr. Abel in a fascinating journey through the early universe, where he uses the latest computer animations of early star formation, supernovae explosions and the buildup of the first galaxies.

Abel, Tom

2008-04-29T23:59:59.000Z

286

Tracking the Sun II: The Installed Cost of Photovoltaics in the U.S. from 1998-2008  

E-Print Network (OSTI)

report, Letting the Sun Shine on Solar Costs: An Empirical2006. Letting the Sun Shine on Solar Costs: An EmpiricalSolar PV Grant Program 10-100 kW >100 kW Tracking the Sun

Barbose, Galen L

2010-01-01T23:59:59.000Z

287

Energy Basics: Photovoltaic Cells  

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

mounting hardware, power-conditioning equipment, and batteries that store solar energy for use when the sun is not shining. When light shines on a PV cell, it may be...

288

NIST Image Gallery: Image Details  

Science Conference Proceedings (OSTI)

... Title: Quantum Dots. Description: After four days, quantum dots still shine (green) in cells embedded in a hydrogel scaffold. ...

289

MEASUREMENT OF 21 cm BRIGHTNESS FLUCTUATIONS AT z {approx} 0.8 IN CROSS-CORRELATION  

SciTech Connect

In this Letter, 21 cm intensity maps acquired at the Green Bank Telescope are cross-correlated with large-scale structure traced by galaxies in the WiggleZ Dark Energy Survey. The data span the redshift range 0.6 < z < 1 over two fields totaling {approx}41 deg. sq. and 190 hr of radio integration time. The cross-correlation constrains {Omega}{sub HI} b{sub HI} r = [0.43 {+-} 0.07(stat.) {+-} 0.04(sys.)] Multiplication-Sign 10{sup -3}, where {Omega}{sub HI} is the neutral hydrogen (H I) fraction, r is the galaxy-hydrogen correlation coefficient, and b{sub HI} is the H I bias parameter. This is the most precise constraint on neutral hydrogen density fluctuations in a challenging redshift range. Our measurement improves the previous 21 cm cross-correlation at z {approx} 0.8 both in its precision and in the range of scales probed.

Masui, K. W.; Switzer, E. R.; Calin, L.-M.; Pen, U.-L.; Shaw, J. R. [Canadian Institute for Theoretical Astrophysics, University of Toronto, 60 St. George St., Toronto, Ontario, M5S 3H8 (Canada); Banavar, N. [Department of Astronomy and Astrophysics, University of Toronto, 50 St. George St., Toronto, Ontario, M5S 3H4 (Canada); Bandura, K. [Department of Physics, McGill University, 3600 Rue University, Montreal, Quebec, H3A 2T8 (Canada); Blake, C. [Centre for Astrophysics and Supercomputing, Swinburne University of Technology, P.O. Box 218, Hawthorn, VIC 3122 (Australia); Chang, T.-C.; Liao, Y.-W. [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei, 10617, Taiwan (China); Chen, X.; Li, Y.-C. [National Astronomical Observatories, Chinese Academy of Science, 20A Datun Road, Beijing 100012 (China); Natarajan, A.; Peterson, J. B.; Voytek, T. C. [McWilliams Center for Cosmology, Carnegie Mellon University, Department of Physics, 5000 Forbes Ave., Pittsburgh, PA 15213 (United States)

2013-01-20T23:59:59.000Z

290

Measurement of 21 cm brightness fluctuations at z ~ 0.8 in cross-correlation  

E-Print Network (OSTI)

In this letter, 21 cm intensity maps acquired at the Green Bank Telescope are cross-correlated with large-scale structure traced by galaxies in the WiggleZ Dark Energy Survey. The data span the redshift range 0.6 < z < 1 over two fields totaling ~41 deg. sq. and 190 hours of radio integration time. The cross-correlation constrains Omega_HI b_HI r = [0.43 \\pm 0.07 (stat.) \\pm 0.04(sys.)] x 10^-3, where Omega_HI is the neutral hydrogen HI fraction, r is the galaxy-hydrogen correlation coefficient, and b_HI is the HI bias parameter. This is the most precise constraint on neutral hydrogen density fluctuations in a challenging redshift range. Our measurement improves the previous 21 cm cross-correlation at z ~ 0.8 both in its precision and in the range of scales probed.

Masui, K W; Banavar, N; Bandura, K; Blake, C; Calin, L -M; Chang, T -C; Chen, X; Li, Y -C; Liao, Y -W; Natarajan, A; Pen, U -L; Peterson, J B; Shaw, J R; Voytek, T C

2012-01-01T23:59:59.000Z

291

Solar Irradiance and Effective Brightness Temperature for SWIR Channels of AVHRR/NOAA and GOES Imagers  

Science Conference Proceedings (OSTI)

Satellite observations in the shortwave infrared (SWIR) part of spectrum between 3.5 and 4.0 ?m deliver critically important information for many applications. The satellite signal in this spectral band consists of solar-reflected radiation and ...

Alexander P. Trishchenko

2006-02-01T23:59:59.000Z

292

Activity-Brightness Correlations for the Sun and Sun-like Stars  

E-Print Network (OSTI)

We analyze the effect of solar features on the variability of the solar irradiance in three different spectral ranges. Our study is based on two solar-cycles' worth of full-disk photometric images from the San Fernando Observatory, obtained with red, blue and Ca II K-line filters. For each image we measure the photometric sum, Sigma, which is the relative contribution of solar features to the disk-integrated intensity of the image. The photometric sums in the red and blue continuum, Sigma_r and Sigma_b, exhibit similar temporal patterns: they are negatively correlated with solar activity, with strong short-term variability and weak solar-cycle variability. However, the Ca II K-line photometric sum, Sigma_K, is positively correlated with solar activity and has strong variations on solar-cycle timescales. We show that we can model the variability of the Sun's bolometric flux as a linear combination of Sigma_r and Sigma_K. We infer that, over solar-cycle timescales, the variability of the Sun's bolometric irradi...

Preminger, Dora; Cookson, Angela

2011-01-01T23:59:59.000Z

293

High-intensity, high-brightness polarized and unpolarized beam production in charge-exchange collisions  

DOE Green Energy (OSTI)

Basic limitations on the high-intensity H{sup -} ion beam production were experimentally studied in charge-exchange collisions of the neutral atomic hydrogen beam in the Na-vapour jet ionizer cell. These studies are the part of the polarized source upgrade (to 10 mA peak current and 85% polarization) project for RHIC. In the source the atomic hydrogen beam of a 5-10 keV energy and total (equivalent) current up to 5 A is produced by neutralization of proton beam in pulsed hydrogen gas target. Formation of the proton beam (from the surface of the plasma emitter with a low transverse ion temperature {approx}0.2 eV) is produced by four-electrode spherical multi-aperture ion-optical system with geometrical focusing. The hydrogen atomic beam intensity up to 1.0 A/cm{sup 2} (equivalent) was obtained in the Na-jet ionizer aperture of a 2.0 cm diameter. At the first stage of the experiment H-beam with 36 mA current, 5 keV energy and {approx}1.0 cm {center_dot} mrad normalized emittance was obtained using the flat grids and magnetic focusing.

Zelenski, A.; Ritter, J.; Zubets, V.; Steski, D.; Atoian, G.; Davydenko, V.; Ivanov, A.; Kolmogorov, A.

2011-03-28T23:59:59.000Z

294

Generation, transport and focusing of high-brightness heavy ion beams  

E-Print Network (OSTI)

The Neutralized Transport Experiment (NTX) has been built at the Heavy Ion Fusion Virtual National Laboratory. NTX is the first successful integrated beam system experiment that explores various physical phenomena, and ...

Henestroza, Enrique

2006-01-01T23:59:59.000Z

295

AN EMERGING CLASS OF BRIGHT, FAST-EVOLVING SUPERNOVAE WITH LOW-MASS EJECTA  

SciTech Connect

A recent analysis of supernova (SN) 2002bj revealed that it was an apparently unique type Ib SN. It showed a high peak luminosity, with absolute magnitude M{sub R} {approx} -18.5, but an extremely fast-evolving light curve. It had a rise time of <7 days followed by a decline of 0.25 mag day{sup -1} in B band and showed evidence for very low mass of ejecta (<0.15 M{sub sun}). Here we discuss two additional historical events, SN 1885A and SN 1939B, showing similarly fast light curves and low ejected masses. We discuss the low mass of ejecta inferred from our analysis of the SN 1885A remnant in M31 and present for the first time the spectrum of SN 1939B. The old environments of both SN 1885A (in the bulge of M31) and SN 1939B (in an elliptical galaxy with no traces of star formation activity) strongly support old white dwarf (WD) progenitors for these SNe. We find no clear evidence for helium in the spectrum of SN 1939B, as might be expected from a helium-shell detonation on a WD, suggested to be the origin of SN 2002bj. Finally, the discovery of all the observed fast-evolving SNe in nearby galaxies suggests that the rate of these peculiar SNe is at least 1%-2% of all SNe.

Perets, Hagai B. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States); Badenes, Carles; Arcavi, Iair; Gal-yam, Avishay [Department of Particle Physics and Astrophysics, Faculty of Physics, Weizmann Institute of Science, Rehovot 76100 (Israel); Simon, Joshua D., E-mail: hperets@cfa.harvard.edu [Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101 (United States)

2011-04-01T23:59:59.000Z

296

CHARACTERIZING THE OPTICAL VARIABILITY OF BRIGHT BLAZARS: VARIABILITY-BASED SELECTION OF FERMI ACTIVE GALACTIC NUCLEI  

SciTech Connect

We investigate the use of optical photometric variability to select and identify blazars in large-scale time-domain surveys, in part to aid in the identification of blazar counterparts to the {approx}30% of {gamma}-ray sources in the Fermi 2FGL catalog still lacking reliable associations. Using data from the optical LINEAR asteroid survey, we characterize the optical variability of blazars by fitting a damped random walk model to individual light curves with two main model parameters, the characteristic timescales of variability {tau}, and driving amplitudes on short timescales {sigma}-circumflex. Imposing cuts on minimum {tau} and {sigma}-circumflex allows for blazar selection with high efficiency E and completeness C. To test the efficacy of this approach, we apply this method to optically variable LINEAR objects that fall within the several-arcminute error ellipses of {gamma}-ray sources in the Fermi 2FGL catalog. Despite the extreme stellar contamination at the shallow depth of the LINEAR survey, we are able to recover previously associated optical counterparts to Fermi active galactic nuclei with E {>=} 88% and C = 88% in Fermi 95% confidence error ellipses having semimajor axis r < 8'. We find that the suggested radio counterpart to Fermi source 2FGL J1649.6+5238 has optical variability consistent with other {gamma}-ray blazars and is likely to be the {gamma}-ray source. Our results suggest that the variability of the non-thermal jet emission in blazars is stochastic in nature, with unique variability properties due to the effects of relativistic beaming. After correcting for beaming, we estimate that the characteristic timescale of blazar variability is {approx}3 years in the rest frame of the jet, in contrast with the {approx}320 day disk flux timescale observed in quasars. The variability-based selection method presented will be useful for blazar identification in time-domain optical surveys and is also a probe of jet physics.

Ruan, John J.; Anderson, Scott F.; MacLeod, Chelsea L.; Becker, Andrew C.; Davenport, James R. A.; Ivezic, Zeljko [Department of Astronomy, University of Washington, Box 351580, Seattle, WA 98195 (United States); Burnett, T. H. [Department of Physics, University of Washington, Seattle, WA 98195-1560 (United States); Kochanek, Christopher S. [Department of Astronomy, Ohio State University, 140 West 18th Avenue, Columbus, OH 43210 (United States); Plotkin, Richard M. [Department of Astronomy, University of Michigan, 500 Church Street, Ann Arbor, MI 48109 (United States); Sesar, Branimir [Division of Physics, Mathematics and Astronomy, Caltech, Pasadena, CA 91125 (United States); Stuart, J. Scott, E-mail: jruan@astro.washington.edu [Lincoln Laboratory, Massachusetts Institute of Technology, 244 Wood Street, Lexington, MA 02420-9108 (United States)

2012-11-20T23:59:59.000Z

297

The Threat to the Planet* Dark & Bright Sides of Global Warming  

E-Print Network (OSTI)

Oil Gas Coal GtC Reserve growth Proven reserves* Emissions (CDIAC) EIA IPCC CO2(ppmv) 600 400 200 100: Natural CO2 - Rate ~100 ppm/My (0.0001 ppm/year) - Human-made rate today: ~2 ppm/year Humans Overwhelm-made forcings dwarf natural forcings that drove glacial-interglacial climate change. 5. Humans now control

Hansen, James E.

298

Hello. I'm a bright guy in Canada. As a Global Warming ...  

Science Conference Proceedings (OSTI)

... brainstorming applications for barrels of oil and bucket fulls of tar (and maybe NG depending on GWP); this qualifier preserves refinery jobs making ...

2012-10-16T23:59:59.000Z

299

Internet as Teenager In Higher Education: Rapid Growth, Transformation, Uncertain but Bright Future  

E-Print Network (OSTI)

Internet is challenging higher education. Perhaps the mostMatkin, INTERNET AS TEENAGER IN HIGHER EDUCATION Notes “Chronicle of Higher Education,” “E-Learning: Successes and

Matkin, Gary

2007-01-01T23:59:59.000Z

300

Critical issues for high-brightness heavy-ion beams -- prioritized  

E-Print Network (OSTI)

National Ignition Facility (NIF) will provide motivation toobtaining funding for the NIF, the Large Hadron Collider (

2007-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "all-stars shine bright" 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

The Bright Lights in New York Could Be Solar | Department of...  

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

on Broadway. The Big Apple also is increasingly aglow with solar power, particularly from rooftop photovoltaic (PV) solar. Earlier this year, the city unveiled the New York City...

302

A Calibrated Measurement of the Near-IR Continuum Sky Brightness Using Magellan/FIRE  

E-Print Network (OSTI)

We characterize the near-IR sky background from 308 observations with the Folded-port InfraRed Echellette (FIRE) spectrograph at Magellan. A subset of 105 observations selected to minimize lunar and thermal effects gives ...

Sullivan, Peter William

303

Objective Satellite-Based Detection of Overshooting Tops Using Infrared Window Channel Brightness Temperature Gradients  

Science Conference Proceedings (OSTI)

Deep convective storms with overshooting tops (OTs) are capable of producing hazardous weather conditions such as aviation turbulence, frequent lightning, heavy rainfall, large hail, damaging wind, and tornadoes. This paper presents a new ...

Kristopher Bedka; Jason Brunner; Richard Dworak; Wayne Feltz; Jason Otkin; Thomas Greenwald

2010-02-01T23:59:59.000Z

304

Observed brightness distributions in overcast skies Raymond L. Lee, Jr.,* and David E. Devan  

E-Print Network (OSTI)

distribu- tions from MODTRAN4, our measured radiances also let us estimate the gradients of cloud thickness an explicitly horizontally homogeneous model such as MODTRAN4 [43] to estimate how changes in h might affect the angular distribution of overcast L. To make this adaptation, we compute tables of MODTRAN's overcast L

Lee Jr., Raymond L.

305

Short-term variability of overcast brightness Raymond L. Lee, Jr. and Javier Hernndez-Andrs  

E-Print Network (OSTI)

stratus overcast at USNA on 4-21-03 with the E trend predicted by the radiative transfer model MODTRAN4. Despite MODTRAN's complexity and versatility, its verisi- militude is not striking in Fig. 14 for fixed model cloud thickness z. Figure 14's MODTRAN simula- tion parameters include typical seasonal

Lee Jr., Raymond L.

306

A SEARCH FOR LOW SURFACE BRIGHTNESS STRUCTURE AROUND COMPACT NARROW EMISSION LINE GALAXIES1  

E-Print Network (OSTI)

for biogenic silica analyses. Thanks also go to Dave Katz for help with SEM analyses as well as the captain and Majewski (1997) argued that atmospheric circulation changed abruptly at this time, pro- ducing cold, dry to the lake basin. References ALLEY, R. B., A. MAJEWSKI, T. SOWERS, M. STUIVER, K. C. TAY- LOR, AND P. U

Bershady, Matthew A.

307

Beams, brightness, and background: Using active spectroscopy techniques for precision measurements in fusion plasma research  

Science Conference Proceedings (OSTI)

The use of an injected neutral beam-either a dedicated diagnostic beam or the main heating beams-to localize and enhance plasma spectroscopic measurements can be exploited for a number of key physics issues in magnetic confinement fusion research, yielding detailed profile information on thermal and fast ion parameters, the radial electric field, plasma current density, and turbulent transport. The ability to make these measurements has played a significant role in much of our recent progress in the scientific understanding of fusion plasmas. The measurements can utilize emission from excited state transitions either from plasma ions or from the beam atoms themselves. The primary requirement is that the beam 'probe' interacts with the plasma in a known fashion. Advantages of active spectroscopy include high spatial resolution due to the enhanced localization of the emission and the use of appropriate imaging optics, background rejection through the appropriate modulation and timing of the beam and emission collection/detection system, and the ability of the beam to populate emitter states that are either nonexistent or too dim to utilize effectively in the case of standard or passive spectroscopy. In addition, some active techniques offer the diagnostician unique information because of the specific quantum physics responsible for the emission. This paper will describe the general principles behind a successful active spectroscopic measurement, emphasize specific techniques that facilitate the measurements and include several successful examples of their implementation, briefly touching on some of the more important physics results. It concludes with a few remarks about the relevance and requirements of active spectroscopic techniques for future burning plasma experiments.

Thomas, Dan M. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States)

2012-05-15T23:59:59.000Z

308

Beams, Brightness and Background - Using Active Spectroscopy Techniques for Precision Measurements in Fusion Plasma Research  

E-Print Network (OSTI)

Bull. Am. Phys. Soc. 56, 58 (2011)53rd American Physical Society Annual Meeting of Division of Plasma Physics Salt Lake City Utah, US, 2011999619019

Thomas, D.M.

2011-08-03T23:59:59.000Z

309

Automated Detection of the Bright Band Using WSR-88D Data  

Science Conference Proceedings (OSTI)

During stratiform precipitation, hydrometeors within the melting layer increase backscatter to radar. This layer can persist at a nearly constant height for hours and can lead to serious radar-based overestimates in accumulated surface rainfall. ...

Jonathan J. Gourley; Chris M. Calvert

2003-08-01T23:59:59.000Z

310

Study of Present-Day LED Brightness and Corresponding Rear Signaling Concepts (LED Optimization)  

E-Print Network (OSTI)

Crash database studies have shown that more than 29 percent of all crashes are rear-end crashes. These types of crashes often result from a failure to respond (or delays in responding) to a stopped or decelerating lead vehicle (NHTSA, 2005). The work described here is part of a larger program of research intended to develop and evaluate rear signaling applications designed to reduce the frequency and severity of rear-end crashes by redirecting drivers ’ visual attention to the forward roadway (for cases involving a distracted driver), and/or increasing the saliency or meaningfulness of the brake signal (for attentive drivers).

Round Stop Lamp A; Round Stoplamp A

2009-01-01T23:59:59.000Z

311

Three-dimensional analysis of free-electron laser performance using brightness scaled variables  

E-Print Network (OSTI)

to the Linac Coherent Light Source (LCLS) design, ESASEon the LCLS, and the optimal gain for a ?xed emittance.The parameters for LCLS used here are a beam energy of 13.64

Gullans, M.

2008-01-01T23:59:59.000Z

312

A 3d Parallel Beam Dynamics Code for Modeling High Brightness Beams in Photoinjectors  

E-Print Network (OSTI)

of IMPACT-T simulations of the LCLS photoinjectors. We alsoBefore the application to the LCLS photoinjector study, webeam stability and lasing in the LCLS. Fig. 7 gives the ?nal

Qiang, J.; Lidia, S.; Ryne, R.; Limborg, C.

2005-01-01T23:59:59.000Z

313

A bright idea? : the promise and peril of a memory drug  

E-Print Network (OSTI)

In the MIT lab of neuropharmacologist Richard Wurtman, rodents that received a new Alzheimer's drug have shown a marked improvement in learning and memory. They are able to master elaborate mazes in half the time of their ...

Dowd, William (William Michael)

2007-01-01T23:59:59.000Z

314

The Reduction of Errors Caused by Bright Bands in Quantitative Rainfall Measurements Made Using Radar  

Science Conference Proceedings (OSTI)

The presence of melting snow in a radar beam produces a highly enhanced return which can lead to large errors in estimates of areal surface rainfall made with radar. This paper describes an algorithm for use in real time to detect the presence of ...

Catherine J. Smith

1986-03-01T23:59:59.000Z

315

PREPARE YOUR CLASS for the Broad Stripes and Bright Stars museum theater program  

E-Print Network (OSTI)

Banner," the song that became the U.S. national anthem in 1931. History Standards Correlation Grades K­4 Topic Three: The History of the United States: Democratic Principles and Values and the People from Many stripes, 7 white stripes, and a blue canton from bolts of imported English wool bunting that measured 12

Mathis, Wayne N.

316

NREL and SkyFuel Partnership Reflects Bright Future for Solar ...  

Solar power has been nipping at the heels of fossil fuels for decades, but hasn't yet found a way to be cost-competitive on a large scale. Skip to Content.

317

On the Brightness of the Thomson Lamp: A Prolegomenon to Quantum Recursion Theory  

Science Conference Proceedings (OSTI)

Some physical aspects related to the limit operations of the Thomson lamp are discussed. Regardless of the formally unbounded and even infinite number of "steps" involved, the physical limit has an operational meaning in agreement with the Abel sums ...

Karl Svozil

2009-09-01T23:59:59.000Z

318

Bright CdSe quantum dot inserted in single ZnSe nanowires  

Science Conference Proceedings (OSTI)

We report the evidence of CdSe quantum dot (QD) insertion in single defect-free ZnSe nanowire. These nanowires have been grown by molecular beam epitaxy in vapour-liquid-solid growth mode catalysed with gold particles. We developed a two-step process ... Keywords: µPL, Antibunching, CdSe, Correlation measurement, Micro photoluminescence, Polarisation, Single NW, Single QD, Single nanowire, Single nanowire heterostructures, Single quantum dot, TRPL, Time-resolved photoluminescence, Two-step process, ZnSe

A. Tribu; G. Sallen; T. Aichele; C. Bougerol; R. André; J. P. Poizat; S. Tatarenko; K. Kheng

2009-02-01T23:59:59.000Z

319

Image contrast enhancement for preserving mean brightness without losing image features  

Science Conference Proceedings (OSTI)

Histogram equalization is a well-known and effective technique for improving the contrast of images. However, the traditional histogram equalization (HE) method usually results in extreme contrast enhancement, which causes an unnatural look and visual ... Keywords: Contrast enhancement, Histogram equalization, Image quality evaluation

Shih-Chia Huang, Chien-Hui Yeh

2013-05-01T23:59:59.000Z

320

Comparative Study of Brightness/Whiteness Using Various Analytical Methods on Coated Papers Containing Colorants  

E-Print Network (OSTI)

the appearance and optical performance of coated and uncoated papers. There are several different systems in use the UV portion of the illuminant to a constant value, c) a reverse optical system that prevents for the description and specification of color and optical properties of paper, using colorimeters, spectrophotometers

Fleming, Paul D. "Dan"

Note: This page contains sample records for the topic "all-stars shine bright" 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

Detection and Correction of Diurnal Sampling Bias in HIRS/2 Brightness Temperatures  

Science Conference Proceedings (OSTI)

Diurnal sampling biases arise in the High-Resolution Infrared Radiation Sounder (HIRS) satellite observations because some of the NOAA polar-orbiting satellites drift significantly from their original local observation time. Such bias adversely ...

Darren L. Jackson; Brian J. Soden

2007-08-01T23:59:59.000Z

322

KEEPING THE FUTURE BRIGHT 2004 Canadian Electricity Human Resource Sector Study  

E-Print Network (OSTI)

consisting of about 50 percent methane and 50 percent carbon dioxide. Biogas production typically begins one or two years after waste placement and may last for decades. Biogas production may vary significantly

323

Frostbite Theater - Experiments You Can Try at Home! - Light is a Particle!  

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

Measure the Width of a Hair - With a Laser! Measure the Width of a Hair - With a Laser! Previous Video (Measure the Width of a Hair - With a Laser!) Frostbite Theater Main Index Next Video (Let's Measure the Diameter of the Sun!) Let's Measure the Diameter of the Sun! Light is a Particle! Do you have a laser? Do you have a roll of duct tape that's a really, really bright pink? If so, you can explore the exciting world of quantum physics by demonstrating the particle nature of light! [ Show Transcript ] Announcer: Frostbite Theater presents... Cold Cuts! No baloney! Joanna and Steve: Just science! Joanna: Hi! I'm Joanna! Steve: And I'm Steve! Joanna: If you have a laser, and you know how to use it safely, try this. Find something that's really bright pink and shine the laser on it. If you use a red laser, you'll get a red dot, just like you'd might expect.

324

TransForum v9n2 -Transportation at Argonne Open House  

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

Technologies Shine at Argonne's Open House jehlikgroupopenhouse Researcher Forrest Jehlik shows open house visitors how to use Argonne's driving simulator. aroraopenhousegrou...

325

Solar | Department of Energy  

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

efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or...

326

Tax Credits, Rebates & Savings | Department of Energy  

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

City of Milwaukee - Milwaukee Shines Solar Financing Wisconsin Multi-Family Residential Residential Solar Buying & Making Electricity Heating & Cooling Water Heating City of...

327

SSRL- Stanford Synchrotron Radiation Laboratory  

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

light shines brilliantly these days at the Stanford Synchrotron Radiation Laboratory (SSRL)". The Secretary of Energy sent these words to be conveyed at the formal opening of...

328

Physics Reports 361 (2002) 57265 www.elsevier.com/locate/physrep  

E-Print Network (OSTI)

photosynthesis. However, photovolatics only produce electricity when the sun is shining. Storing electricity in 1987, he initially investigated how its ability to oxidize iron, radioactive materials, and petroleum

Linke, Heiner

329

Argonne Transportation - 2009 Features Archive  

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

Technologies Shine at Argonne's Open House On Saturday, August 29, 2009, Argonne National Laboratory hosted 22,000 visitors at an open house, the first since 2006....

330

ARM - Publications: Science Team Meeting Documents  

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

changes in stratospheric water vapor, which point to problems with current treatment of absorption and emission by stratospheric water vapor. Forster and Shine 1999, using a...

331

Page not found | Department of Energy  

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

and rain. http:energy.govenergysaverarticlessolar-decathlon-rain-and-shine Article Solar Decathlon: How Do WE Do Efficiency? The weather is cooling off, the trees look...

332

A Comparison of WSR-88D Reflectivities, SSM/I Brightness Temperatures, and Lightning for Mesoseale Convective Systems in Texas. Part II. SSM/I Brightness Temperatures and Lightning  

Science Conference Proceedings (OSTI)

This study examines simultaneous SSM/I and lightning data for a sample of nine mesoscale convective systems (MCS) near League City, Texas. Comparison of lightning files of varying sizes from ±2 to ±30 min revealed that the ±10-min interval ...

Karen I. Mohr; Richard Toracinta; Edward J. Zipser; Richard E. Orville

1996-06-01T23:59:59.000Z

333

Coronal Abundances in Orion Nebula Cluster Stars  

E-Print Network (OSTI)

Following the Chandra Orion Ultradeep Project (COUP) observation, we have studied the chemical composition of the hot plasma in a sample of 146 X-ray bright pre-main sequence stars in the Orion Nebula Cluster. We report measurements of individual element abundances for a subsample of 86 slightly-absorbed and bright X-ray sources, using low resolution X-ray spectra obtained from the Chandra ACIS instrument. The X-ray emission originates from a plasma with temperatures and elemental abundances very similar to those of active coronae in older stars. A clear pattern of abundances vs. First Ionization Potential (FIP) is evident if solar photospheric abundances are assumed as reference. The results are validated by extensive simulations. The observed abundance distributions are compatible with a single pattern of abundances for all stars, although a weak dependence on flare loop size may be present. The abundance of calcium is the only one which appears to vary substantially between stars, but this quantity is affected by relatively large uncertainties. The ensemble properties of the X-ray bright COUP sources confirm that the iron in the emitting plasma is underabundant with respect to both the solar composition and to the average stellar photospheric values. Comparison of the present plasma abundances with those of the stellar photospheres and those of the gaseous component of the nebula, indicates a good agreement for all the other elements with available measurements, and in particular for the high-FIP elements (Ne, Ar, O, and S) and for the low-FIP element Si. We conclude that there is evidence of a significant chemical fractionation effect only for iron, which appears to be depleted by a factor 1.5--3 with respect to the stellar composition.

A. Maggio; E. Flaccomio; F. Favata; G. Micela; S. Sciortino; E. D. Feigelson; K. V. Getman

2007-03-16T23:59:59.000Z

334

High-brightness picosecond ion beam source based on BNL Terawatt CO2 laser: Proof-of-principle experiments  

Science Conference Proceedings (OSTI)

Under the continuing DOE support, we have: o assembled the basic experiment setup and then continued expanding it to include diverse diagnostics and to accommodate gas jet targets in addition to metal foils; o conducted an extensive study of our novel laser, significantly enhanced laser beam diagnostics, and improved relevant laser parameters; o turned our experiments into a truly international endeavor with active collaboration of close to 20 researchers in US, UK, and Germany; o conducted the first ever experiments with proton and ion acceleration by lasers interacting with overcritical plasma of gas jets; o for the first time directly observed radiation pressure acceleration of protons, including quasi-monoenergetic spectra promising for future applications; o for the first time directly observed quasi-stable, bubble-like plasma structures that likely evolved from relativistic laser-plasma solitons (post-solitons). Thus, we have confirmed a strong potential of a picosecond TW CO2 laser as a research tool in laser-plasma science and as a promising vehicle for future applications of laser ion acceleration. This has led to apparent increase of the interest in mid-IR laser ion acceleration. In particular, another major research group began extensive proton acceleration experiments with their own CO2 laser at UCLA. As a result, the mechanisms responsible for laser proton acceleration in gas jets have become somewhat clearer. It is also important to note that modest DOE funding played the role of a seed support ensuring the formation of a multinational research team, whose members contributed its time and equipment with value well in excess of that seed amount.

Shkolnikov, Peter

2012-10-04T23:59:59.000Z

335

WASP-38b: A 6.87 day period exoplanet transiting a bright F-type star  

E-Print Network (OSTI)

We report the discovery of WASP-38b, a long period transiting planet in an eccentric $6.871815$ day orbit. The transit epoch is $2455335.92050 \\pm 0.00074$ (HJD) and the transit duration is $4.663$ hours. We performed a spectral analysis of the host star HD 146389/BD+10 2980 that yielded $T_{eff} = 6150 \\pm 80 $K, \\logg$=4.3 \\pm 0.1$, \\vsini=$8.6 \\pm 0.4 $\\kms, $M_*=1.16 \\pm 0.04$\\Msun\\ and $R_* =1.36 \\pm 0.05 $\\Rsun, consistent with a dwarf of spectral type F8. The radial velocity variations and the transit light curves were fitted simultaneously to estimate the orbital and planetary parameters. The planet has a mass of $2.71 \\pm 0.07 $ \\Mjup\\ and a radius of $1.08 \\pm 0.05\\, $\\Rjup\\, giving a density, $ \\rho_p = 2.2 \\pm 0.3 \\rho_J$. The high precision of the eccentricity $e=0.032 \\pm 0.0045$ is due to the relative transit timing from the light curves and the RV shape. The planet equilibrium temperature is estimated at $1311 \\pm 45$K. WASP-38b is the longest period planet found by WASP-North and with a brigh...

Barros, S C C; Cameron, A Collier; Lister, T A; McCormac, J; Pollacco, D; Simpson, E K; Smalley, B; Street, R A; Todd, I; Triaud, A H M J; Boisse, I; Bouchy, F; Hebrard, G; Moutou, C; Pepe, F; Queloz, D; Santerne, A; Segransan, D; Udry, S; Bento, J; Butters, O W; Enoch, B; Haswell, C A; Hellier, C; Keenan, F P; Miller, G R M; Moulds, V; Norton, A J; Parley, N; Skillen, I; Watson, C A; West, R G; Wheatley, P J

2010-01-01T23:59:59.000Z

336

Rapid and multi-band variability of the TeV-bright active nucleus of the galaxy IC 310  

E-Print Network (OSTI)

Context. The galaxy IC 310 has recently been identified as a $\\gamma$-ray emitter by the Fermi-LAT and at very high energies by the MAGIC telescopes. Originally classified as a head-tail radio galaxy, the nature of this object is subject of controversy because its nucleus shows blazar-like behavior. Aims. In order to understand the nature of IC 310 and the origin of the VHE emission we studied the spectral and flux variability of IC 310 from the X-ray band to the VHE regime. Methods. The daily light curve of IC 310 above 300 GeV has been measured with MAGIC from 2009 October to 2010 February. Contemporaneous Fermi-LAT data (2008-2011) in the 10-500 GeV energy range were also analyzed. In X-ray, archival observations from 2003 to 2007 with XMM-Newton, Chandra, and Swift-XRT in the 0.5-10 keV band were studied. Results. Several flares with similar amplitude can be seen in the MAGIC light curve. Day to day flux variability is clearly present. The photon index between 120 GeV and 8 TeV is measured to be $\\Gamma=2...

Aleksi?, J; Antoranz, P; Babic, A; de Almeida, U Barres; Barrio, J A; González, J Becerra; Bednarek, W; Berger, K; Bernardini, E; Biland, A; Blanch, O; Bock, R K; Boller, A; Bonnefoy, S; Bonnoli, G; Tridon, D Borla; Borracci, F; Bretz, T; Carmona, E; Carosi, A; Fidalgo, D Carreto; Colin, P; Colombo, E; Contreras, J L; Cortina, J; Cossio, L; Covino, S; Da Vela, P; Dazzi, F; De Angelis, A; De Caneva, G; Mendez, C Delgado; De Lotto, B; Doert, M; Domínguez, A; Prester, D Dominis; Dorner, D; Doro, M; Eisenacher, D; Elsaesser, D; Farina, E; Ferenc, D; Fonseca, M V; Font, L; Fruck, C; López, R J García; Garczarczyk, M; Terrats, D Garrido; Gaug, M; Giavitto, G; Godinovi?, N; Muñoz, A González; Gozzini, S R; Hadamek, A; Hadasch, D; Häfner, D; Herrero, A; Hose, J; Hrupec, D; Idec, W; Kadenius, V; Knoetig, M L; Krähenbühl, T; Krause, J; Kushida, J; La Barbera, A; Lelas, D; Lewandowska, N; Lindfors, E; Lombardi, S; López-Coto, R; López, M; López-Oramas, A; Lorenz, E; Lozano, I; Makariev, M; Mallot, K; Maneva, G; Mankuzhiyil, N; Mannheim, K; Maraschi, L; Marcote, B; Mariotti, M; Martínez, M; Masbou, J; Mazin, D; Meucci, M; Miranda, J M; Mirzoyan, R; Moldón, J; Moralejo, A; Munar-Adrover, P; Nakajima, D; Niedzwiecki, A; Nilsson, K; Nowak, N; Orito, R; Overkemping, A; Paiano, S; Palatiello, M; Paneque, D; Paoletti, R; Paredes, J M; Partini, S; Persic, M; Prada, F; Moroni, P G Prada; Prandini, E; Preziuso, S; Puljak, I; Reichardt, I; Reinthal, R; Rhode, W; Ribó, M; Rico, J; Rügamer, S; Saggion, A; Saito, K; Saito, T Y; Salvati, M; Satalecka, K; Scalzotto, V; Scapin, V; Schultz, C; Schweizer, T; Shore, S N; Sillanpää, A; Sitarek, J; Snidaric, I; Sobczynska, D; Spanier, F; Spiro, S; Stamatescu, V; Stamerra, A; Steinke, B; Storz, J; Sun, S; Suri?, T; Takalo, L; Takami, H; Tavecchio, F; Temnikov, P; Terzi?, T; Tescaro, D; Teshima, M; Thaele, J; Tibolla, O; Torres, D F; Toyama, T; Treves, A; Uellenbeck, M; Vogler, P; Wagner, R M; Weitzel, Q; Zandanel, F; Zanin, R; Dauser, T; Fortin, P; Kadler, M; Krauß, F; Wilbert, S; Wilms, J; Dr-Karl-Remeis-Observatory,; Physics, Erlangen Centre for Astroparticle; Bamberg, 96049; Germany,; Observatory, Fred Lawrence Whipple; Astrophysics, Harvard-Smithsonian Center for; Amado,; 85645, AZ; USA),

2013-01-01T23:59:59.000Z

337

The Impact of Spatial Resolution Enhancement of SSM/I Microwave Brightness Temperatures on Rainfall Retrieval Algorithms  

Science Conference Proceedings (OSTI)

The impact of spatial resolution enhancement on estimates of tropical typhoon rainfall based on SSM/1 (Special Sensor Microwave/Imager) measurements is evaluated with six different microwave precipitation retrieval algorithms. Passive microwave ...

Michael R. Farrar; Eric A. Smith; Xuwu Xiang

1994-03-01T23:59:59.000Z

338

The Relationship of Lightning Activity with Microwave Brightness Temperatures and Spaceborne Radar Reflectivity Profiles in the Central and Eastern Mediterranean  

Science Conference Proceedings (OSTI)

In this paper, the relationship of lightning activity in the central and eastern Mediterranean with the 85-GHz polarization-corrected temperature (PCT) and radar reflectivity provided by the Tropical Rainfall Measuring Mission (TRMM) satellite is ...

D. K. Katsanos; K. Lagouvardos; V. Kotroni; A. A. Argiriou

2007-11-01T23:59:59.000Z

339

Reducing Uncertainties of SNO-Estimated Intersatellite AMSU-A Brightness Temperature Biases for Surface-Sensitive Channels  

Science Conference Proceedings (OSTI)

In this study, a technique has been developed to improve collocation of two passive-microwave satellite instrument datasets at a simultaneous nadir overpass (SNO). The technique has been designed for the purpose of reducing uncertainties related ...

Robert A. Iacovazzi Jr.; Changyong Cao

2008-06-01T23:59:59.000Z

340

Sea Ice Brightness Temperature as a Function of Ice Thickness, Part II: Computed curves for thermodynamically modelled ice profiles  

E-Print Network (OSTI)

Ice thickness is an important variable for climate scientists and is still an unsolved problem for satellite remote sensing specialists. There has been some success detecting the thickness of thin ice from microwave radiometers, and with this in mind this study attempts to model the thickness-radiance relation of sea ice at frequencies employed by the Soil Moisture and Ocean Salinity (SMOS) radiometer and the Advanced Microwave Scanning Radiometer (AMSR): between 1.4 and 89 GHz. In the first part of the study, the salinity of the ice was determined by a pair of empirical relationships, while the temperature was determined by a thermodynamic model. Because the thermodynamic model can be used as a simple ice growth model, in this, second part, the salinities are determined by the growth model. Because the model uses two, constant-weather scenarios representing two extremes ("fall freeze-up" and "winter cold snap"), brine expulsion is modelled with a single correction-step founded on mass conservation. The growt...

Mills, Peter

2012-01-01T23:59:59.000Z

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


341

LS-303 Generation of Bright, Tunable, Polarized ?-Ray Sources by Scattering Laser Pulses from APS Electron Beams  

E-Print Network (OSTI)

We calculate the performance of possible Advanced Photon Source (APS) ?-ray sources for applications in nuclear physics research. For the APS storage ring, it is possible to generate tagged ?-ray photon fluxes of 10 8, 0.7×10 8, and 0.3×10 8 photons/s at photon energies of 1, 1.7, and 2.8 GeV, respectively. For untagged photons, fluxes higher than 10 8 photons/s are possible for those energies. For the injection booster, an untagged ?-ray photon flux up to 10 8 photons/s at energy ranging from 5 MeV to 1 GeV is possible. This can be achieved using off-the-shelf commercial Ti:Sa laser systems. The photon fluxes predicted here are in general one to two orders of magnitude higher than facilities with similar photon energies. 1.

Y. Li; Y. Chae; L. Emery; Z. Huang; K. Harkay; J. Lewellen; S. V. Milton; V. Sajaev

2003-01-01T23:59:59.000Z

342

Through a window, brightly : modulating daylight and solar radiation in commercial and institutional buildings through the use of architectural elements  

E-Print Network (OSTI)

Natural lighting serves several important functions in buildings. The visual power of a shaft of sunlight penetrating a dark space or the visual beauty of a stained window has long been recognized by architects and designers. ...

Schlereth, Hans-Joachim

1982-01-01T23:59:59.000Z

343

Lensless Imaging of Magnetic Nanostructures  

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

Lensless Imaging of Magnetic Nanostructures Print Lensless Imaging of Magnetic Nanostructures Print Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying the basics of magnetism, scientists aim to better understand the fundamental physical principles that govern magnetic systems, perhaps leading to important new technologies. The high brightness and coherence of the ALS's soft x-rays have enabled scientists to apply lensless x-ray imaging for the first time to nanometer-scale magnetic structures in an alloy. Many Ways To See You open your eyes and detect the light rays streaming through your bedroom window (transmission), illuminating your socks on the floor (scattering). You put on your glasses (refraction) to detect the state of your image in the mirror (reflection). If you are an ALS scientist, perhaps you go to work and shine some x-ray light on a crystal to detect the arrangement of the atoms in the crystal (diffraction). Now, thanks to Turner et al., you can also shine some x-ray light on a magnetic sample to detect the arrangement of its electron spins through a method known as lensless imaging. This last example is an equally valid way to "see," but instead of using windows, lenses, or mirrors to manipulate light and construct an image, mathematical formulas are used to describe the effects that particles and fields in the sample have on the light. These formulas have always contained terms that relate to the electron spin of magnetic atoms, but they were previously ignored. Using the full formula allows for the determination of not only crystal structure, but magnetic spin distribution and orientation as well, with a spatial resolution limited only by the wavelength of x-rays used. This promising method can be used at any coherent light source, including modern x-ray free-electron lasers, where ultrashort pulses would freeze-frame magnetic changes, offering the potential for imaging in unprecedented detail the structure and motion of boundaries between regions with different magnetic orientation.

344

Lensless Imaging of Magnetic Nanostructures  

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

Lensless Imaging of Magnetic Nanostructures Print Lensless Imaging of Magnetic Nanostructures Print Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying the basics of magnetism, scientists aim to better understand the fundamental physical principles that govern magnetic systems, perhaps leading to important new technologies. The high brightness and coherence of the ALS's soft x-rays have enabled scientists to apply lensless x-ray imaging for the first time to nanometer-scale magnetic structures in an alloy. Many Ways To See You open your eyes and detect the light rays streaming through your bedroom window (transmission), illuminating your socks on the floor (scattering). You put on your glasses (refraction) to detect the state of your image in the mirror (reflection). If you are an ALS scientist, perhaps you go to work and shine some x-ray light on a crystal to detect the arrangement of the atoms in the crystal (diffraction). Now, thanks to Turner et al., you can also shine some x-ray light on a magnetic sample to detect the arrangement of its electron spins through a method known as lensless imaging. This last example is an equally valid way to "see," but instead of using windows, lenses, or mirrors to manipulate light and construct an image, mathematical formulas are used to describe the effects that particles and fields in the sample have on the light. These formulas have always contained terms that relate to the electron spin of magnetic atoms, but they were previously ignored. Using the full formula allows for the determination of not only crystal structure, but magnetic spin distribution and orientation as well, with a spatial resolution limited only by the wavelength of x-rays used. This promising method can be used at any coherent light source, including modern x-ray free-electron lasers, where ultrashort pulses would freeze-frame magnetic changes, offering the potential for imaging in unprecedented detail the structure and motion of boundaries between regions with different magnetic orientation.

345

Lensless Imaging of Magnetic Nanostructures  

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

Lensless Imaging of Magnetic Lensless Imaging of Magnetic Nanostructures Lensless Imaging of Magnetic Nanostructures Print Wednesday, 28 March 2012 00:00 Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying the basics of magnetism, scientists aim to better understand the fundamental physical principles that govern magnetic systems, perhaps leading to important new technologies. The high brightness and coherence of the ALS's soft x-rays have enabled scientists to apply lensless x-ray imaging for the first time to nanometer-scale magnetic structures in an alloy. Many Ways To See You open your eyes and detect the light rays streaming through your bedroom window (transmission), illuminating your socks on the floor (scattering). You put on your glasses (refraction) to detect the state of your image in the mirror (reflection). If you are an ALS scientist, perhaps you go to work and shine some x-ray light on a crystal to detect the arrangement of the atoms in the crystal (diffraction). Now, thanks to Turner et al., you can also shine some x-ray light on a magnetic sample to detect the arrangement of its electron spins through a method known as lensless imaging. This last example is an equally valid way to "see," but instead of using windows, lenses, or mirrors to manipulate light and construct an image, mathematical formulas are used to describe the effects that particles and fields in the sample have on the light. These formulas have always contained terms that relate to the electron spin of magnetic atoms, but they were previously ignored. Using the full formula allows for the determination of not only crystal structure, but magnetic spin distribution and orientation as well, with a spatial resolution limited only by the wavelength of x-rays used. This promising method can be used at any coherent light source, including modern x-ray free-electron lasers, where ultrashort pulses would freeze-frame magnetic changes, offering the potential for imaging in unprecedented detail the structure and motion of boundaries between regions with different magnetic orientation.

346

Lensless Imaging of Magnetic Nanostructures  

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

Lensless Imaging of Magnetic Nanostructures Print Lensless Imaging of Magnetic Nanostructures Print Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying the basics of magnetism, scientists aim to better understand the fundamental physical principles that govern magnetic systems, perhaps leading to important new technologies. The high brightness and coherence of the ALS's soft x-rays have enabled scientists to apply lensless x-ray imaging for the first time to nanometer-scale magnetic structures in an alloy. Many Ways To See You open your eyes and detect the light rays streaming through your bedroom window (transmission), illuminating your socks on the floor (scattering). You put on your glasses (refraction) to detect the state of your image in the mirror (reflection). If you are an ALS scientist, perhaps you go to work and shine some x-ray light on a crystal to detect the arrangement of the atoms in the crystal (diffraction). Now, thanks to Turner et al., you can also shine some x-ray light on a magnetic sample to detect the arrangement of its electron spins through a method known as lensless imaging. This last example is an equally valid way to "see," but instead of using windows, lenses, or mirrors to manipulate light and construct an image, mathematical formulas are used to describe the effects that particles and fields in the sample have on the light. These formulas have always contained terms that relate to the electron spin of magnetic atoms, but they were previously ignored. Using the full formula allows for the determination of not only crystal structure, but magnetic spin distribution and orientation as well, with a spatial resolution limited only by the wavelength of x-rays used. This promising method can be used at any coherent light source, including modern x-ray free-electron lasers, where ultrashort pulses would freeze-frame magnetic changes, offering the potential for imaging in unprecedented detail the structure and motion of boundaries between regions with different magnetic orientation.

347

Lensless Imaging of Magnetic Nanostructures  

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

Lensless Imaging of Magnetic Nanostructures Print Lensless Imaging of Magnetic Nanostructures Print Magnetism is useful for many devices and techniques, from electric motors and computer hard drives to magnetic resonance imaging used in medicine. By studying the basics of magnetism, scientists aim to better understand the fundamental physical principles that govern magnetic systems, perhaps leading to important new technologies. The high brightness and coherence of the ALS's soft x-rays have enabled scientists to apply lensless x-ray imaging for the first time to nanometer-scale magnetic structures in an alloy. Many Ways To See You open your eyes and detect the light rays streaming through your bedroom window (transmission), illuminating your socks on the floor (scattering). You put on your glasses (refraction) to detect the state of your image in the mirror (reflection). If you are an ALS scientist, perhaps you go to work and shine some x-ray light on a crystal to detect the arrangement of the atoms in the crystal (diffraction). Now, thanks to Turner et al., you can also shine some x-ray light on a magnetic sample to detect the arrangement of its electron spins through a method known as lensless imaging. This last example is an equally valid way to "see," but instead of using windows, lenses, or mirrors to manipulate light and construct an image, mathematical formulas are used to describe the effects that particles and fields in the sample have on the light. These formulas have always contained terms that relate to the electron spin of magnetic atoms, but they were previously ignored. Using the full formula allows for the determination of not only crystal structure, but magnetic spin distribution and orientation as well, with a spatial resolution limited only by the wavelength of x-rays used. This promising method can be used at any coherent light source, including modern x-ray free-electron lasers, where ultrashort pulses would freeze-frame magnetic changes, offering the potential for imaging in unprecedented detail the structure and motion of boundaries between regions with different magnetic orientation.

348

MOLECULAR AND ATOMIC LINE SURVEYS OF GALAXIES. I. THE DENSE, STAR-FORMING GAS PHASE AS A BEACON  

Science Conference Proceedings (OSTI)

We predict the space density of molecular gas reservoirs in the universe and place a lower limit on the number counts of carbon monoxide (CO), hydrogen cyanide (HCN) molecular, and [C II] atomic emission lines in blind redshift surveys in the submillimeter-centimeter spectral regime. Our model uses (1) recently available HCN spectral line energy distributions (SLEDs) of local luminous infrared galaxies (LIRGs, L{sub IR} > 10{sup 11} L{sub Sun }), (2) a value for {epsilon}{sub *} = SFR/M{sub dense}(H{sub 2}) provided by new developments in the study of star formation feedback on the interstellar medium, and (3) a model for the evolution of the infrared luminosity density. Minimal 'emergent' CO SLEDs from the dense gas reservoirs expected in all star-forming systems in the universe are then computed from the HCN SLEDs since warm, HCN-bright gas will necessarily be CO-bright, with the dense star-forming gas phase setting an obvious minimum to the total molecular gas mass of any star-forming galaxy. We include [C II] as the most important of the far-infrared cooling lines. Optimal blind surveys with the Atacama Large Millimeter Array (ALMA) could potentially detect very distant (z {approx} 10-12) [C II] emitters in the {>=}ULIRG galaxy class at a rate of {approx}0.1-1 hr{sup -1} (although this prediction is strongly dependent on the star formation and enrichment history at this early epoch), whereas the (high-frequency) Square Kilometer Array will be capable of blindly detecting z > 3 low-J CO emitters at a rate of {approx}40-70 hr{sup -1}. The [C II] line holds special promise for detecting metal-poor systems with extensive reservoirs of CO-dark molecular gas where detection rates with ALMA can reach up to 2-7 hr{sup -1} in Bands 4-6.

Geach, James E. [Department of Physics, McGill University, 3600 rue University, Montreal, Quebec H3A 2T8 (Canada); Papadopoulos, Padelis P., E-mail: jimgeach@physics.mcgill.ca, E-mail: padelis@mpifr-bonn.mpg.de [Max Planck Institute for Radioastronomy, Auf dem Huegel 69, D-53121 Bonn (Germany)

2012-10-01T23:59:59.000Z

349

July/August 2011 | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

NNSA Conference Highlights Work Critical to Stewardship Science NNSA Rolls Out Mobile Radiation Detection System for INTERPOL Members NNSA Monitors Major League Baseball's All-Star...

350

The amazing number Pi - CECM  

E-Print Network (OSTI)

In constructing the all star hockey team of great mathematicians, there seems to be pretty wide agreement that the front line consists of Archimedes,Newton,.

351

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 17, NO. 4, JULY/AUGUST 2011 971 Highly Efficient and Bright LEDs Overgrown  

E-Print Network (OSTI)

, and Chun-Yen Chang, Life Fellow, IEEE Abstract--We presented a study of high-performance GaN- based light-sectional scanning electron microscopy. It can increase the light-extraction efficiency due to additional light blue shift and great enhancement of the light output (70% at 20 mA) compared with the conventional LEDs

Meng, Hsin-Fei

352

GEOPHYSICAL RESEARCH LETTERS, VOL. 27, NO. 13, PAGES 1815-1818, JULY 1, 2000 Lidar Observations of Elevated Temperatures in Bright  

E-Print Network (OSTI)

the 1998 Leonid Multi-Instrument Campaign experiment over Okinawa, Japan [Chu et al., 2000]. Moreover

Chu, Xinzhao

353

Rain/No-Rain Classification Methods for Microwave Radiometer Observations over Land Using Statistical Information for Brightness Temperatures under No-Rain Conditions  

Science Conference Proceedings (OSTI)

One of the goals of the Global Precipitation Measurement project, the successor to the Tropical Rainfall Measuring Mission (TRMM), is to produce a 3-hourly global rainfall map using several spaceborne microwave radiometers. It is important, ...

Shinta Seto; Nobuhiro Takahashi; Toshio Iguchi

2005-08-01T23:59:59.000Z

354

A Comparison Of WSR-88D Reflectivities, SSM/I Brightness Temperatures, and Lightning for Mesoscale Convective Systems in Texas. Part I: Radar Reflectivity and Lightning  

Science Conference Proceedings (OSTI)

This is the first part of a two part study. Part I compares radar data from the League City, Texas, WSR-88D and cloud-to-ground (CG) lightning data for a set of eight mesoscale convective systems (MCSs), which occur at various stages of ...

E. Richard Toracinta; Karen I. Mohr; Edward J. Zipser; Richard E. Orville

1996-06-01T23:59:59.000Z

355

2 Science Opportunities The proposed NSLS-II facility, a state-of-the-art medium-energy high brightness X-ray storage ring  

E-Print Network (OSTI)

. The device is a cylindrical rotor surrounded by a mixing bowl. The spinning rotor acts as a mixer EAM potential developed for plutonium by M. Baskes [10]. #12;19 This is important since Pu

Ohta, Shigemi

356

Time-dependent, x-ray spectral unfolds and brightness temperatures for intense Li{sup +} ion beam-driven hohlraums  

SciTech Connect

X-ray-producing hohlraums are being studied as indirect drives for Inertial Confinement Fusion targets. In a 1994 target series on the PBFAII accelerator, cylindrical hohlraum targets were heated by an intense Li{sup +} ion beam and viewed by an array of 13 time-resolved, filtered x-ray detectors (XRDs). The UFO unfold code and its suite of auxiliary functions were used extensively in obtaining time- resolved x-ray spectra and radiation temperatures from this diagnostic. UFO was also used to obtain fitted response functions from calibration data, to simulate data from blackbody x-ray spectra of interest, to determine the suitability of various unfolding parameters (e.g., energy domain, energy partition, smoothing conditions, and basis functions), to interpolate the XRD signal traces, and to unfold experimental data. The simulation capabilities of the code were useful in understanding an anomalous feature in the unfolded spectra at low photon energies ({le} 100 eV). Uncertainties in the differential and energy-integrated unfolded spectra were estimated from uncertainties in the data. The time-history of the radiation temperature agreed well with independent calculations of the wall temperature in the hohlraum.

Fehl, D.L.; Chandler, G.A.; Biggs, F.; Dukart, R.J.; Moats, A.R.; Leeper, R.J.

1996-07-01T23:59:59.000Z

357

Time-dependent, x-ray spectral unfolds and brightness temperatures for intense Li{sup +} ion beam-driven hohlraums  

SciTech Connect

X-ray-producing hohlraums are being studied as indirect drives for inertial confinement fusion targets. In a 1994 target series on the PBFAII accelerator, cylindrical hohlraum targets were heated by an intense Li{sup +} ion beam and viewed by an array of 13 time-resolved, filtered x-ray detectors (XRDs). The unfold operator (UFO) code and its suite of auxiliary functions were used extensively in obtaining time-resolved x-ray spectra and radiation temperatures from this diagnostic. The UFO was also used to obtain fitted response functions from calibration data, to simulate data from blackbody x-ray spectra of interest, to determine the suitability of various unfolding parameters (e.g., energy domain, energy partition, smoothing conditions, and basis functions), to interpolate the XRD signal traces, and to unfold experimental data. The simulation capabilities of the code were useful in understanding an anomalous feature in the unfolded spectra at low photon energies ({le}100 eV). Uncertainties in the differential and energy-integrated unfolded spectra were estimated from uncertainties in the data. The time{endash}history of the radiation temperature agreed well with independent calculations of the wall temperature in the hohlraum. {copyright} {ital 1997 American Institute of Physics.}

Fehl, D.L.; Chandler, G.A.; Biggs, F.; Dukart, R.J.; Moats, A.R.; Leeper, R.J. [Sandia National Laboratories Albuquerque, New Mexico 87185 (United States)] [Sandia National Laboratories Albuquerque, New Mexico 87185 (United States)

1997-01-01T23:59:59.000Z

358

Modification date 9 July 2012 22:56:01 | Open Energy Information  

Open Energy Info (EERE)

Factsheet Web Final.pdf + (10 July 2012 08:59:56) City of Atlanta - Sustainable Home Initiative in the New Economy (SHINE) Program (Georgia) + (10 July 2012 13:13:01)...

359

SLAC National Accelerator Laboratory - Superhard Diamond-Denting...  

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

is pressed between the flattened tips of two opposing diamonds. Scientists can shine lasers or X-rays through the transparent diamonds to observe and identify any atomic-scale...

360

SLAC National Accelerator Laboratory - K-B Mirrors Harness X...  

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

B Mirrors Harness X-rays for Science By Mike Ross October 11, 2011 Up close, they look simple as can be: a pair of metal bars, each with one side polished to a brilliant shine. One...

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361

Four Years of Leadership with Secretary Chu | Department of Energy  

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Mall Interior Secretary Ken Salazar (Left) and Energy Secretary Steven Chu (Right) flip the switch to shine LED lighting on the elm paths of the East side of the mall. Image:...

362

Boosting the Next Wave of Accelerators: New Technique Speeds...  

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

pale blue and yellow. The shining dot represents the electron beam. (Images and animations by Jean Luc-Vay using a visualization package developed at Berkeley Lab by David...

363

The Effect of Realistic Radiative Transfer on Potential Vorticity Structures, Including the Influence of Background Shear and Strain  

Science Conference Proceedings (OSTI)

A modified version of the radiation scheme of Shine is used to investigate the decay of small-scale potential vorticity structures characteristic of those observed in the lower and middle stratosphere. Following Fels, effective thermal damping ...

P. H. Haynes; W. E. Ward

1993-10-01T23:59:59.000Z

364

Secretary Chu Announces up to $62 Million for Concentrating Solar...  

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

which is used to make steam and drive a turbine. The system will also incorporate a thermal storage system to allow it to operate for a period when the sun isn't shining. The...

365

Salamander Leviathan  

E-Print Network (OSTI)

band. Setting: Black River Falls, Wisconsin. 1890 Song List:1. So This is Wisconsin 2. Passerby 3. Shining Singing YouYou 14. Go 2 Sleep (III) 15. Wisconsin Death Trip 16. You’ve

Knight, Krista

2011-01-01T23:59:59.000Z

366

CX-010650: Categorical Exclusion Determination | Department of...  

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

Transform Raman (FT-Raman) spectrometer will be used to shine a weak (0-400 mWatts) laser (785 nm) to 0.25 mm2 area of sample and then observe the scattered light....

367

Semiconductors and the Built-In Electric Field for Crystalline Silicon Photovoltaic Cells  

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

To separate electrical charges, crystalline silicon cells must have a built-in electric field. Light shining on crystalline silicon may free electrons within the crystal lattice, but for these...

368

Solar | Department of Energy  

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

relatively inexpensive materials such as plastic lenses and metal housings to capture the solar energy shining on a fairly large area and focus that energy onto a smaller area-the...

369

Science Education | Department of Energy  

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

photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how photovoltaic panels work and energy systems can be integrated....

370

SLIDESHOW: Learning Valuable Lessons About Energy with Scouts...  

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

photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how photovoltaic panels work and energy systems can be integrated....

371

Local Scouts Train with Hanford Safety Experts - 52 Boy Scouts...  

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

photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how photovoltaic panels work and energy systems can be integrated....

372

Photo of the Week: The First Energy-Efficient Dual-Paned Windows...  

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

photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how photovoltaic panels work and energy systems can be integrated....

373

Photo of the Week: Studying the Rhizosphere | Department of Energy  

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

photo, a Boy Scout watches light shine on a solar panel that's powering a hydrogen fuel cell system, showing how photovoltaic panels work and energy systems can be integrated....

374

A clearer look at how iron reacts in the environment | Argonne...  

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

in the environment By Tona Kunz * September 6, 2012 Tweet EmailPrint New way to study electron transfer shines through rust ARGONNE, ILL. (Sept. 6, 2012) - Using ultrafast X-rays,...

375

FermiNews - March 30, 2001  

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

Wilson Hall Upgrades Let the Sun Shine in Why is a Sammy Sosa Home Run Like a Higgs Boson? Dispatch from Malarge Calendar and Milestones Classifieds and Letter to the...

376

PMP Tour Form  

Science Conference Proceedings (OSTI)

Tours operate rain or shine. PMP Tour Form. Complete and fax or e-mail this form by November 20 with payment information to: Master Tour Co. Ltd., Thailand.

377

Photovoltaic Cell Conversion Efficiency  

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

The conversion efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

378

Energy Basics: Photovoltaic Cell Conversion Efficiency  

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

efficiency of a photovoltaic (PV) cell, or solar cell, is the percentage of the solar energy shining on a PV device that is converted into electrical energy, or electricity....

379

Energy Basics: Concentrator Photovoltaic Systems  

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

inexpensive materials such as plastic lenses and metal housings to capture the solar energy shining on a fairly large area and focus that energy onto a smaller area-the solar...

380

Energy Basics: Photovoltaic Cell Quantum Efficiency  

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

by a photovoltaic (PV) cell to the number of photons-or packets of light-of a given energy shining on the solar cell. Quantum efficiency therefore relates to the response of a...

Note: This page contains sample records for the topic "all-stars shine bright" 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

Photovoltaic Cell Quantum Efficiency  

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

Quantum efficiency (QE) is the ratio of the number of charge carriers collected by a photovoltaic (PV) cell to the number of photons—or packets of light—of a given energy shining on the solar cell....

382

Semiconductors and the Built-In Electric Field for Crystalline...  

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

field. Light shining on crystalline silicon may free electrons within the crystal lattice, but for these electrons to do useful work-such as provide electricity to a light...

383

Advanced Light Source Activity Report 2005  

E-Print Network (OSTI)

Michigan University and ALS), J.D. Bozek and G.D. Ackerman (Shining light on met­ als in the environment," EleinentsStray field reduc­ tion of als eddy current septum magnets,"

Tamura Ed., Lori S.

2010-01-01T23:59:59.000Z

384

Florida | Department of Energy  

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

May 16, 2011 Fuel Cells Shine a Light on the Last Endeavour Space Shuttle Launch NASA's Kennedy Space Center is one of several test sites for a new hydrogen fuel cell-powered...

385

FREE TRIAL WEEK! We will offer many of our classes free of charge from Monday, September 19 Sunday, Sep-  

E-Print Network (OSTI)

FREE TRIAL WEEK! We will offer many of our classes free of charge from Monday, September 19 ­Sunday intensity style program us- ing free weights, resistance and body weight. RISE AND SHINE INTERVAL

386

Page not found | Department of Energy  

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

Rain and Shine Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray...

387

Sun, wind, and pedestrian comfort: a study of Toronto's Central Area  

E-Print Network (OSTI)

No. ST10,1978, pp. 1585-1593. Sun, Wind and Comfort Appendixshadow for both spaces. Sun, Wind and Comfort Discretionaryfor the obvious reason that the sun does not shine from the

Bosselmann, P.; Arens, Edward A; Dunker, K.; Wright, R.

1990-01-01T23:59:59.000Z

388

Development of an asynchronous solar-powered cooker  

E-Print Network (OSTI)

One reason that solar cookers have not gained widespread acceptance is because their use has proved inconvenient and impractical. Users are restricted to cooking when, and where, the sun is shining. Furthermore, the cooking ...

Akinwale, P. Femi (Pamela Femi)

2006-01-01T23:59:59.000Z

389

Solar | Department of Energy  

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

Beginning July 28, 2011, the City of Milwaukee will be offering low-interest loans for solar energy under its Milwaukee Shines Solar Financing program. Loans are available to...

390

Limb Correction Effects on TIROS-N Microwave Sounding Unit Observations  

Science Conference Proceedings (OSTI)

Evaluations of limb-corrected brightness temperatures computed by NESDIS from TIROS-N MSU observed brightness temperatures are presented. Observed brightness temperatures both before and after limb correction are compared to simulated brightness ...

Thomas L. Koehler

1989-09-01T23:59:59.000Z

391

 

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

Kaiser Optic Fourier Transform Raman (FT-Raman) spectrometer will be use to shine a weak (0 - 400 mWatts) laser (785 nm) to 0.25 mm^2 area of Kaiser Optic Fourier Transform Raman (FT-Raman) spectrometer will be use to shine a weak (0 - 400 mWatts) laser (785 nm) to 0.25 mm^2 area of sample and then observed the scattered light. The sample can be sludge, saltcake, supernate, salt solution, organics (including polymers), inorganics (including nanomaterials), organometallics, organoceramics, metals, cerment (ceramic-metals), gases, and energetic materials ( including heat , pressure, electric field, radiation, oxygen, and magnetic field sensitive). The scattered light is detected, measured, and analyzed for determining molecular composition of the sample. Theoretically, the process of shining light on a sample could deposit enough energy to excite the sample and sample locally decomposes into gases and other solid byproducts. Radioactive and/or mixed samples are always analyzed inside a radioactive hood

392

Property:Incentive/Cont2Addr | Open Energy Information  

Open Energy Info (EERE)

Addr Addr Jump to: navigation, search Property Name Incentive/Cont2Addr Property Type String Pages using the property "Incentive/Cont2Addr" Showing 25 pages using this property. (previous 25) (next 25) A AEP (Central and North) - CitySmart Program (Texas) + 400 All Star Road + AEP (Central, North and SWEPCO) - Commercial Solutions Program (Texas) + 400 All Star Road + AEP SWEPCO - CitySmart Program (Texas) + 1111 Louisiana Street + AEP SWEPCO - Commercial Solutions Program (Texas) + 400 All Star Road + AEP SWEPCO - SCORE Program (Texas) + 400 All Star Road + AEP Texas - Commercial and Industrial Energy Efficiency Rebate Program (Texas) + 910 Energy Drive + AEP Texas Central Company - CitySmart Program (Texas) + 1111 Louisiana Street + AEP Texas Central Company - Commercial Solutions Program (Texas) + 1111 Louisiana Street +

393

FusEdWeb | Fusion Education  

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

Stars The Sun Runs on Fusion Energy Like all stars, the sun is a huge fusion reactor, pumping out 100 million times as much energy in a single second as the entire population of...

394

OPEN GOVERNMENT | Department of Energy  

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

OPEN GOVERNMENT OPEN GOVERNMENT OPEN GOVERNMENT Sun Shines through the Capitol Building | Credit: GC Photographer Daniel Zazueta Sun Shines through the Capitol Building | Credit: GC Photographer Daniel Zazueta The Office of the General Counsel is proud to provide the public with access to its governmental processes and information. On January 21, 2009, President Barack Obama issued a Memorandum on Transparency and Open Government, where he pledged, "My Administration is committed to creating an unprecedented level of openness in Government. We will work together to ensure the public trust and establish a system of transparency, public participation, and collaboration. Openness will strengthen our democracy and promote efficiency and effectiveness in Government." The Department

395

Synthesis and photoluminescence properties of the high-brightness Eu{sup 3+}-doped M{sub 2}Gd{sub 4}(MoO{sub 4}){sub 7} (M=Li, Na) red phosphors  

SciTech Connect

A series of red-emitting phosphors Eu{sup 3+}-doped M{sub 2}Gd{sub 4}(MoO{sub 4}){sub 7} (M=Li, Na) have been successfully synthesized at 850 Degree-Sign C by solid state reaction. The excitation spectra of the two phosphors reveal two strong excitation bands at 396 nm and 466 nm, respectively, which match well with the two popular emissions from near-UV and blue light-emitting diode chips. The intensity of the emission from {sup 5}D{sub 0} to {sup 7}F{sub 2} of M{sub 2}(Gd{sub 1-x}Eu{sub x}){sub 4}(MoO{sub 4}){sub 7} phosphors with the optimal compositions of x=0.85 for Li or x=0.70 for Na is about five times higher than that of Y{sub 2}O{sub 3}:Eu{sup 3+}. The quantum efficiencies of the entitled phosphors excited under 396 nm and 466 nm are also investigated and compared with commercial phosphors Sr{sub 2}Si{sub 5}N{sub 8}:Eu{sup 2+} and Y{sub 3}A{sub 5}O{sub 12}:Ce{sup 3+}. The experimental results indicate that the Eu{sup 3+}-doped M{sub 2}Gd{sub 4}(MoO{sub 4}){sub 7} (M=Li, Na) phosphors are promising red-emitting phosphors pumped by near-UV and blue light. - Graphical Abstract: The intensity of the red emission of M{sub 2}(Gd{sub 1-x}Eu{sub x}){sub 4}(MoO{sub 4}){sub 7} (M=Li, Na) phosphors with the optimal compositions is about five times higher than that of Y{sub 2}O{sub 3}:Eu{sup 3+}. Highlights: Black-Right-Pointing-Pointer Two novel Eu{sup 3+}-doped red phosphors (Na{sub 2}Gd{sub 4}(MoO{sub 4}){sub 2}, Li{sub 2}Gd{sub 4}(MoO{sub 4}){sub 7}) were synthesized. Black-Right-Pointing-Pointer Their emission intensities are about five times higher than that of Y{sub 2}O{sub 3}:Eu{sup 3+}. Black-Right-Pointing-Pointer Their quantum efficiencies are higher than that of commercial red phosphor Sr{sub 2}Si{sub 5}N{sub 8}:Eu{sup 2+}.

Zhao Chengchun [Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China); Graduate School of Chinese Academy of Sciences, Beijing 100039 (China); Yin Xin [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Huang Fuqiang, E-mail: huangfq@mail.sic.ac.cn [CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050 (China); Hang Yin, E-mail: yhang@siom.ac.cn [Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

2011-12-15T23:59:59.000Z

396

Colors  

Science Conference Proceedings (OSTI)

... blue the low order byte. (eg: 255 is bright blue, (ash 255 8 = 65280 = 255 * 2^8) is bright green, etc. The image array of ...

397

Solar | Department of Energy  

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

Department of Energy's 1.6 billion loan guarentee will support Bright Source's Ivanpah Solar Energy Generating System. | courtesy of Bright Source Department Announces Loan...

398

Please continue to the next page... ENGINEERING & SCIENCE s pr i ng 200922  

E-Print Network (OSTI)

a fiber-optic cable into the esophagus to deliver the photons. When exposed to the light, the dye produces. Right: The four LEDs at the base of the new probe shine in infrared light. A camera connected is the science and technology of using light in biology, or as he puts it, "We use optics in clever ways to solve

Yang, Changhuei

399

WIND TOMOGRAPHY IN BINARY SYSTEMS O.Knill, R.Dgani and M.Vogel  

E-Print Network (OSTI)

WIND TOMOGRAPHY IN BINARY SYSTEMS O.Knill, R.Dgani and M.Vogel ETH-Zurich, CH-8092, Switzerland method is particularly suitable for determining the velocity laws of stellar winds. 1. WIND TOMOGRAPHY AND ABEL'S INTEGRAL Binary systems in which a compact, point-like radiation source shines through the wind

Knill, Oliver

400

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 103,NO. B12,PAGES 30,245-30,267,DECEMBER 10, 1998 Okinawa trough backarc basin'  

E-Print Network (OSTI)

JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 103,NO. B12,PAGES 30,245-30,267,DECEMBER 10, 1998 Okinawa-KunHsu3,NicolasThareau·, Jean-PierreLeFormal·, Char-ShineLiu3,andACT party4 Abstract. TheOkinawaTrough,lyingbetweenJapanandTaiwan,isabackarcbasinformedby extensionwithinthecontinentallithospherebehindtheRyukyutrench-arcsystem.Stress directionsassociatedwiththetwolastextensionalphasesin thesouthwesternOkinawa

Demouchy, Sylvie

Note: This page contains sample records for the topic "all-stars shine bright" from the National Library of EnergyBeta (NLEBeta).
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401

UNIVERSITE DE CORSE PASQUALE PAOLI FACULTE DES SCIENCES ET TECHNIQUES  

E-Print Network (OSTI)

the electricity you can produce with a solar PV array or wind turbine at your home or business. www.nrel.gov/eis farms are sited; sun must shine on solar farms; feedstock crops must grow for bioenergy; hot rocks velocity, solar irra- diation, precipitation, subsurface temperatures, stream flow) directly related

Paris-Sud XI, Université de

402

uw-!i/(asfe/s) trllhJd-rrt. it,4t-U)t1..6(.R t4r~~ I{!~d b!Rc+~cfbl/'Vl SySte;Ud. (:J()of)  

E-Print Network (OSTI)

the electricity you can produce with a solar PV array or wind turbine at your home or business. www.nrel.gov/eis farms are sited; sun must shine on solar farms; feedstock crops must grow for bioenergy; hot rocks velocity, solar irra- diation, precipitation, subsurface temperatures, stream flow) directly related

Kammen, Daniel M.

403

energy.ca.gov facebook.com/CAEnergy twitter.com/calenergy Why is Energy Storage  

E-Print Network (OSTI)

Value for Customers: In-home Energy Storage and Rooftop Solar Panels PROJECT WITH SACRAMENTO MUNICIPAL and solar provide clean, sustainable electricity, but only when the sun shines or the wind blows predictable as well, and grid operators must account for variable generation provided by sources like solar

404

Possible Observations of Noctilucent Clouds by Thomas Romney Robinson C. J. Butler  

E-Print Network (OSTI)

.They are believed to be composed of ice crystals which reflect the light of the Sun shining from below the observer to be composed of extra-terrestrial particles which, as they descend through the atmosphere to the vicinity Observatory, best known by meteorologists for his Cup Anemometer. From a painting by Maud Humphrey

405

U.S. Department of Energy Categorical Exclusion ...  

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

Transform Raman (FT-Raman) spectrometer will be used to shine a weak (0-400 mWatts) laser (785 nm) to 0.25 mm2 area of sample and then observe the scattered light. B3.6 -...

406

Structure of Clean Ge(1 1 0) and Effects of Low Coverage Ag Adsorption C. H. Mullet and S. Chiang  

E-Print Network (OSTI)

1 Structure of Clean Ge(1 1 0) and Effects of Low Coverage Ag Adsorption C. H. Mullet and S. Chiang, 2000), p. 296. [18] C. L. H. Devlin, D. N. Futaba, A. Loui, J. D. Shine, and S. Chiang, Mat Sci Eng B

Chiang, Shirley

407

Computing at Different Levels of Approximation: Examples in Molecular Biology  

Science Conference Proceedings (OSTI)

Lubrication is pervasive in both everyday and technical affairs. But understanding it at a fundamental level is in its infancy. The treatment of this kind of complex process is an area where CSE can shine. Computational science enables us to disentangle ...

Günther H. Peters; T. Frimurer; S. Toxvaerd; O. h. Olsen; A. Svendsen

1995-09-01T23:59:59.000Z

408

Magnetotransport in low dimensional semiconductor structures  

E-Print Network (OSTI)

bias to the gate, one may capacitively induce carriers into the 2DEG. The carrier density in a GaAs-AIGaAs heterostructure, at low temper­ ature, can also be enhanced by shining an red light emitting diode (LED) onto the device. This has the effect...

Kim, Gil-Ho

1998-06-16T23:59:59.000Z

409

inter-glow  

Science Conference Proceedings (OSTI)

Inter-glow is a system that facilitates close interaction and communication among users in real space by using multiplexed visible-light communication technology. By shining light on an object containing an embedded photo sensor, users can get information ... Keywords: intelligent space, interactive art, pervasive computing, visible-light communication

Takuji Narumi; Atsushi Hiyama; Tomohiro Tanikawa; Michitaka Hirose

2007-08-01T23:59:59.000Z

410

Abstract--A novel compressed air energy storage system for wind turbine is proposed. It captures excess power prior to  

E-Print Network (OSTI)

Abstract-- A novel compressed air energy storage system for wind turbine is proposed. It captures of simulation case studies demonstrate the operation of the system. I. INTRODUCTION enewable energy such as wind and solar energy are clean and available as long as the wind blows or sun shines. Two main disadvantages

Li, Perry Y.

411

Page not found | Department of Energy  

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

61 - 14170 of 28,905 results. 61 - 14170 of 28,905 results. Download Spectrum Technology Workshop http://energy.gov/cio/downloads/spectrum-technology-workshop Download DOE Shipment Activities: What We Accomplished and a Look Forward Presented by Stephen O'Connor, Director of Office of Packaging and Transportation. http://energy.gov/em/downloads/doe-shipment-activities-what-we-accomplished-and-look-forward Download Sue Tierney (Energy All Stars Presentation) Sue Tierney delivered this presentation" The Future of Energy: Toward the 21st Century Energy System We Need (With an Eye on the Rear View Mirror)" at the Energy All Stars event on January 19, 2013... http://energy.gov/downloads/sue-tierney-energy-all-stars-presentation Download Response to several FOIA requests- Renewable Energy.

412

Page not found | Department of Energy  

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

61 - 11770 of 28,905 results. 61 - 11770 of 28,905 results. Download Michael Liebreich (Energy All Stars Presentation) Michael Liebreich, CEO of Bloomberg New Energy Finance, delivered this presentation on the energy economy at the Energy All Stars event on January 19, 2013, at the US Department of Energy in... http://energy.gov/downloads/michael-liebreich-energy-all-stars-presentation Download CX-000476: Categorical Exclusion Determination 331 Building Irrigation Upgrades, 300 Area CX(s) Applied: B2.5 Date: 09/23/2009 Location(s): Richland, Washington Office(s): Science, Pacific Northwest Site Office http://energy.gov/nepa/downloads/cx-000476-categorical-exclusion-determination Download Progress and Outlook on China Industrial Energy Conservation Progress and Outlook on China Industrial Energy Conservation

413

Page not found | Department of Energy  

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

31 - 17340 of 26,764 results. 31 - 17340 of 26,764 results. Download Michael Liebreich (Energy All Stars Presentation) Michael Liebreich, CEO of Bloomberg New Energy Finance, delivered this presentation on the energy economy at the Energy All Stars event on January 19, 2013, at the US Department of Energy in... http://energy.gov/downloads/michael-liebreich-energy-all-stars-presentation Download Microsoft Word- PSRP Updates 6-25-10_v2 http://energy.gov/downloads/microsoft-word-psrp-updates-6-25-10v2-2 Download Microsoft Word- test http://energy.gov/downloads/microsoft-word-test Download Docket No. EERE-2008-BT-STD-0005. RIN 1904-AB57 This memorandum for the record provides a summary of a February 13, 2013 meeting with U.S. Department of Energy staff concerning DOE's proposed rulemaking regarding amended energy conservation...

414

Page not found | Department of Energy  

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

61 - 20570 of 31,917 results. 61 - 20570 of 31,917 results. Article The Story of a Cutting-Edge Solar Startup Alta Devices is rethinking how low cost, high performance solar cells are made. http://energy.gov/articles/story-cutting-edge-solar-startup Download Biological Weed Control at the Sherwood, Washington, Disposal Site Biological Weed Control at the Sherwood, Washington, Disposal Site http://energy.gov/lm/downloads/biological-weed-control-sherwood-washington-disposal-site Download Sue Tierney (Energy All Stars Presentation) Sue Tierney delivered this presentation" The Future of Energy: Toward the 21st Century Energy System We Need (With an Eye on the Rear View Mirror)" at the Energy All Stars event on January 19, 2013... http://energy.gov/downloads/sue-tierney-energy-all-stars-presentation

415

Page not found | Department of Energy  

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

91 - 28600 of 29,416 results. 91 - 28600 of 29,416 results. Download Demonstration of DeconGel (TM) at the Oak Ridge National Laboratory Building 2026 Cellular Bioengineering Inc. (CBI) has developed decontamination gels (DeconGel(tm) 1101, 1120 and 1121) that when dried allow efficient removal of contamination from surfaces in a peelable film that... http://energy.gov/em/downloads/demonstration-decongel-tm-oak-ridge-national-laboratory-building-2026 Download Sue Tierney (Energy All Stars Presentation) Sue Tierney delivered this presentation" The Future of Energy: Toward the 21st Century Energy System We Need (With an Eye on the Rear View Mirror)" at the Energy All Stars event on January 19, 2013... http://energy.gov/downloads/sue-tierney-energy-all-stars-presentation Download Enforcement Guidance Supplement 00-01: Enforcement Position

416

Page not found | Department of Energy  

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

11 - 25720 of 28,904 results. 11 - 25720 of 28,904 results. Article Weatherization and Energy Efficiency Success Stories Last Friday was National Weatherization Day, which brought attention to the cost-saving and environmental benefits of a number of energy efficiency methods. http://energy.gov/energysaver/articles/weatherization-and-energy-efficiency-success-stories Article Solar Decathlon: Rain and Shine Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. http://energy.gov/energysaver/articles/solar-decathlon-rain-and-shine Article Solar Decathlon: How Do WE Do Efficiency? The weather is cooling off, the trees look gorgeous and (every other year)

417

Photovoltaic Cell Quantum Efficiency Basics | Department of Energy  

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

Cell Quantum Efficiency Basics Cell Quantum Efficiency Basics Photovoltaic Cell Quantum Efficiency Basics August 20, 2013 - 3:05pm Addthis Quantum efficiency (QE) is the ratio of the number of charge carriers collected by a photovoltaic (PV) cell to the number of photons-or packets of light-of a given energy shining on the solar cell. Quantum efficiency therefore relates to the response of a solar cell to the various wavelengths in the spectrum of light shining on the cell. The QE is given as a function of either wavelength or energy. If all the photons of a certain wavelength are absorbed and the resulting minority carriers (for example, electrons in a p-type material) are collected, then the QE at that particular wavelength has a value of one. The QE for photons with energy below the bandgap is zero.

418

Page not found | Department of Energy  

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

51 - 23560 of 28,560 results. 51 - 23560 of 28,560 results. Article Solar Decathlon: Rain and Shine Friday marked the end of the Solar Decathlon competition. Team Germany won (for the second time) in a very competitive field, in a ceremony marked by gray skies, cold temperatures and rain. http://energy.gov/energysaver/articles/solar-decathlon-rain-and-shine Article Solar Decathlon: How Do WE Do Efficiency? The weather is cooling off, the trees look gorgeous and (every other year) the National Mall turns into a beehive of activity when the Solar Decathlon comes to town. http://energy.gov/energysaver/articles/solar-decathlon-how-do-we-do-efficiency Article A Cure for the Summertime Blues? When you look at your utility bill, keep this in mind: about 43% of the money you spend goes for heating and cooling. And when the thermometer

419

Page not found | Department of Energy  

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

71 - 26280 of 28,904 results. 71 - 26280 of 28,904 results. Article EM Waste Isolation Pilot Plant Team's Holiday Spirit Shines CARLSBAD, N.M. - Children in the Carlsbad area are warmer this holiday season thanks to the generosity of EM's Waste Isolation Pilot Plant (WIPP) team of employees. http://energy.gov/em/articles/em-waste-isolation-pilot-plant-team-s-holiday-spirit-shines Article Renewable Energy Resource Maps and Screening Tools Renewable energy resources are available across the United States but vary greatly depending on exact location and micro-climate. This page outlines renewable energy resource maps and screening tools to help Federal agencies assess the viability of on-site renewable energy projects. http://energy.gov/eere/femp/articles/renewable-energy-resource-maps-and-screening-tools

420

Page not found | Department of Energy  

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

81 - 16190 of 26,764 results. 81 - 16190 of 26,764 results. Article Shining Energy-saving LEDs on Utah Starry Nights Utah is known for its magnificent night skies, where stargazers can catch a glimpse of constellations or a rogue shooting star. Now some rural towns have found a way to create even better views-and conserve energy. http://energy.gov/articles/shining-energy-saving-leds-utah-starry-nights Article Residential Tax Credits Boost Maryland Geothermal Business Demand for residential geothermal systems grows as homeowners look for ways to cut expenses. http://energy.gov/articles/residential-tax-credits-boost-maryland-geothermal-business Article Help Wanted at Kansas Wind Blade Company Enertech, Inc., a small-scale wind manufacturer in Newton, Kansas, has added six new employees in the last eight months, boosting its workforce to

Note: This page contains sample records for the topic "all-stars shine bright" 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

Analysis of radiation exposure for additional naval personnel at Operation CASTLE - supplemental report. Technical report, 24 Apr-20 Nov 89  

SciTech Connect

This report supplements DNA-TR-84-6 by analyzing the radiation exposure for typical crewmembers of eight additional ships at Operation CASTLE in 1954: RECLAIMER, SHEA, COCOPA, MENDER, MOLALA, TAWAKONI, PC-1546, and LST-1146. Utilizing the reconstructed radiation environments from deck contamination, water shine, proximate ship shine, and contaminated hulls and piping, equivalent film badge doses are calculated and compared with analyzed film badge dosimetry. Comparisons are hampered by a shortage of badge readings and by cohort badging that may have emphasized non-representative crew activities. Considering this, agreement is good (within a few hundred millirem) when doses were high but less when doses were low. In all cases, overall totals appear to be in excellent agreement.

Thomas, C.; Geotz, J.; Klemm, J.; Ortlieb, E.

1991-10-01T23:59:59.000Z

422

Photo Inhibition of Localized Corrosion (Phase 2)  

Science Conference Proceedings (OSTI)

Incident ultraviolet (UV) radiation inhibits pitting corrosion of carbon steel, selected copper alloys, and stainless steels in solutions containing chloride. This discovery leads to the possibility of inhibiting pitting and other forms of localized corrosion in power plant components simply by shining a light on their surfaces. Research in this phase focused on the effects of photon energy, solution pH, and surface roughness on photoinhibition as well as the feasibility for its practical use in the ther...

1997-09-25T23:59:59.000Z

423

Laser cooling of solids  

SciTech Connect

We present an overview of solid-state optical refrigeration also known as laser cooling in solids by fluorescence upconversion. The idea of cooling a solid-state optical material by simply shining a laser beam onto it may sound counter intuitive but is rapidly becoming a promising technology for future cryocooler. We chart the evolution of this science in rare-earth doped solids and semiconductors.

Epstein, Richard I [Los Alamos National Laboratory; Sheik-bahae, Mansoor [UNM

2008-01-01T23:59:59.000Z

424

IEEE TRANSACTIONS ON MAGNETICS, VOL. 39, NO. 3, MAY 2003 1827 Optimization of Electromagnetic Absorption in  

E-Print Network (OSTI)

All-Star Skills Competition Rules - 2013 Participant first shoots a layup. After dribbling between between a second set of three obstacles and complete the challenge with a layup or shot. Touching course with a basketball in their hand. When the ref signals, the player will start with a layup

Matous, Karel

425

Remote Sensing of Precipitable Water over the Oceans from Nimbus 7 Microwave Measurements  

Science Conference Proceedings (OSTI)

Nimbus 7 Scanning Multichannel Microwave Radiometer (SMMR) brightness temperature measurements in the 21 and 18 GHz channels are used to sense the precipitable water in the atmosphere over oceans. The difference in the brightness temperature (T21 ...

C. Prabhakara; H. D. Chang; A. T. C. Chang

1982-01-01T23:59:59.000Z

426

Tropical Cyclone Outer Surface Winds Derived from Satellite Microwave Sounder Data  

Science Conference Proceedings (OSTI)

Upper tropospheric temperature anomalies are detected in brightness temperature data from the Nimbus 6 Scanning Microwave Spectrometer (SCAMS). Brightness temperature anomalies are related to surface pressure anomalies through the radiative ...

Stanley Q. Kidder; William M. Gray; Thomas H. Vonder Haar

1980-02-01T23:59:59.000Z

427

Comparison of Model-Produced and Observed Microwave Radiances and Estimation of Background Error Covariances for Hydrometeor Variables within Hurricanes  

Science Conference Proceedings (OSTI)

A radiative transfer model was updated to better simulate Special Sensor Microwave Imager (SSM/I)–observed brightness temperatures in areas of high ice concentration. The difference between the lowest observed and model-produced brightness ...

Clark Amerault; Xiaolei Zou

2006-03-01T23:59:59.000Z

428

Evaluating the Quality of Ground-Based Microwave Radiometer Measurements and Retrievals Using Detrended Fluctuation and Spectral Analysis Methods  

Science Conference Proceedings (OSTI)

Time series both of microwave radiometer brightness temperature measurements at 23.8 and 31.4 GHz and of retrievals of water vapor and liquid water path from these brightness temperatures are evaluated using the detrended fluctuation analysis ...

K. Ivanova; E. E. Clothiaux; H. N. Shirer; T. P. Ackerman; J. C. Liljegren; M. Ausloos

2002-01-01T23:59:59.000Z

429

Heavy Thunderstorms Observed Over Land by the Nimbus 7 Scanning Multichannel Microwave Radiometer  

Science Conference Proceedings (OSTI)

In an examination of microwave data from the Nimbus 7 satellite, brightness temperatures were found that were much lower than those expected for the radiation emanating from rain-producing clouds. Every case of very cold brightness temperature ...

R. W. Spencer; W. S. Olson; Wu Rongzhang; D. W. Martin; J. A. Weinman; D. A. Santek

1983-06-01T23:59:59.000Z

430

Nimbus-7 37 GHz Radiances Correlated with Radar Rain Rates over the Gulf of Mexico  

Science Conference Proceedings (OSTI)

In a comparison between 37 GHz brightness temperatures from the Nimbus 7 Scanning Multichannel Microwave Radiometer and rain rates derived from the WSR-57 radars at Galveston, Texas and Apalachicola, Florida, it was found that the brightness ...

Roy W. Spencer; Barry B. Hinton; William S. Olson

1983-12-01T23:59:59.000Z

431

Electron generation and transport in intense relativistic laser-plasma interactions relevant to fast ignition ICF  

E-Print Network (OSTI)

surroundings, then the blackbody radiation emitted will bespectral bright- ness of blackbody radiation is given as [3

Ma, Tammy Yee Wing

2010-01-01T23:59:59.000Z

432

Special Report -- A House on the Lake  

E-Print Network (OSTI)

oaks, the blade of threshold brass, the porch air bright andright after crossing the brass threshold. “A smash through

Campbell, Robert

2008-01-01T23:59:59.000Z

433

Session V  

Science Conference Proceedings (OSTI)

Mar 14, 2012 ... Solidification Modeling: from Electromagnetic Levitation to Atomization ... through two cameras (bright field) and a laser interference technique.

434

Three-Dimensional Interface Pattern Evolution in Directional ...  

Science Conference Proceedings (OSTI)

... in situ through two cameras (bright field) and a laser interference technique. Several ... Advanced Measurement Devices for the Microgravity Electromagnetic

435

Publications Portal  

Science Conference Proceedings (OSTI)

... S. Bright Abstract: A new derivative of Arizona sand, ISO Medium ... Silicon Carbide Nanostructures: A Tight Binding Approach Topic: Nanotechnology ...

2012-09-17T23:59:59.000Z

436

Hopping versus bulk conductivity in transparent oxides: 12CaO7Al2O3 J. E. Medvedevaa)  

E-Print Network (OSTI)

by the DOE supported NERSC. [1] G. Thomas, Nature (London) 398, 907 (1997); D. S. Ginley and C. Bright, MRS

Medvedeva, Julia E.

437

Carbon Nanotube Field Emission Devices - Energy Innovation Portal  

Low energy consumption; High screen brightness ; Robust ; Operate at lower voltages and less severe vacuums than current FEDs or LCDs;

438

The University of Georgia Center for Agribusiness and Economic Development  

E-Print Network (OSTI)

are covered on one or both sides with either thin plywood or stretched canvas and painted with bright white

Scott, Robert A.

439

NREL: Technology Transfer - Success Stories  

NREL and SkyFuel Partnership Reflects Bright Future for Solar Energy. For the next generation of parabolic troughs, ...

440

Paulina Jaramillo, Ph.D. Executive Director, RenewElec Project  

E-Print Network (OSTI)

.S.; Jaramillo, P.; Weber, C.L.; "Energy consumption in the production of high-brightness light-emitting diodes

Reddy, Raj

Note: This page contains sample records for the topic "all-stars shine bright" 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

LightBox -Exploring Interaction Modalities with Colored Light  

E-Print Network (OSTI)

-bright multi- colored light-emitting diodes (LEDs) of our system can generate any visible lighting color

442

Page not found | Department of Energy  

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

31 - 16240 of 26,764 results. 31 - 16240 of 26,764 results. Article Ames Lab Plays Elemental Role in New PBS Special The periodic table (and Ames Lab) is the focus of David Pogue's newest NOVA special, Hunting the Elements, which premieres on PBS this Wednesday night at 9 p.m. EST (check your local listings). http://energy.gov/articles/ames-lab-plays-elemental-role-new-pbs-special Article STEM Women All-Stars Hit the Road Dr. Karina Edmonds, Technology Transfer Coordinator at the Energy Department, shares her story of how she pursued her interest in mechanical engineering to become the first full-time staffer ever appointed to her current position. http://energy.gov/articles/stem-women-all-stars-hit-road Page Tribal Case Studies Below are links to tribal energy project case studies. http://energy.gov/indianenergy/resources/energy-resource-library/tribal-case-studies

443

Science Education | Department of Energy  

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

January 25, 2013 January 25, 2013 AVESTAR provides high-quality, hands-on, simulator-based workforce training delivered by an experienced team of power industry training professionals for West Virginia students. | Photo courtesy of the Office of Fossil Energy. National Lab Helping to Train Operators for Next Generation of Power Plants Students in West Virginia are receiving hands-on experience for careers at cleaner-burning coal-fired power plants. January 19, 2013 Bill Nye (Energy All Stars Presentation) Bill Nye the Science Guy delivered this presentation on space and the lessons about climate change that can be gleaned from the other planets in our solar system at the Energy All Stars event on January 19, 2013, at the US Department of Energy in Washington, DC. January 11, 2013

444

Analytic Models for the Mechanical Structure of the Solar Core  

E-Print Network (OSTI)

All stars exhibit universal central behavior in terms of new homology variables (u,w). In terms of these variables, we obtain simple analytic fits to numerical standard solar models for the core and radiative zones of the ZAMS and present Suns, with a few global parameters. With these analytic fits, different theoretical models of the solar core, neutrino fluxes, and helioseismic observations can be parametrized and compared.

Dallas C. Kennedy; Sidney A. Bludman

1998-12-09T23:59:59.000Z

445

Videos from the Department of Energy Channel on YouTube  

DOE Data Explorer (OSTI)

The Department of Energy began posting videos on YouTube in July of 2009 and in mid-2013 has more than 150 available. “Faces of the Recovery Act,” “Energy 101,” press briefings, and presentations from ARPA-E events, and Energy All-Stars are some of the series offerings. The newest 2013 videos feature the new Secretary of Energy, Ernst Moniz, as he takes on his new role.

446

Alpha Heating in ITER L-mode and H-mode Plasma  

Science Conference Proceedings (OSTI)

There are many uses of predictions of ITER plasma performance. One is assessing requirements of different plasma regimes. For instance, what current drive and control are needed for steady state. The heating, current drive, and torque systems planned for initial DT operation are negative ion neutral beam injection (NB), ion cyclotron resonance (IC), and electron cyclotron resonance (EC). Which combinations of heating are optimal. What are benefits of the torques, current drive, and fueling using NB. What are the shine-through power and optimum voltage for the NB? What are optimal locations and aiming of the EC launchers? Another application is nuclear licensing (e.g. System integrity, how many neutrons).

R.V. Budny

2011-07-18T23:59:59.000Z

447

NREL: Hydrogen and Fuel Cells Research - Photoelectrochemical Laboratory  

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

Photoelectrochemical Laboratory Photoelectrochemical Laboratory Photo of researcher examining a glass-enclosed photoelectrochemical cell producing hydrogen as a beam of light is shined on it. NREL researcher demonstrating direct production of hydrogen from light energy by a photoelectrochemical cell. Credit: Warren Gretz. NREL's Photoelectrochemical Laboratory enables NREL's pioneering work in photoelectrochemical hydrogen production from solar energy. Photoelectrochemical devices combine elements of solar cells and electrolyzers to produce hydrogen directly from sunlight in a single step. Efficient photoelectrochemical hydrogen production is a holy grail of renewable hydrogen production, and NREL researchers are at the forefront of this research effort. The primary focus is to identify and develop current photovoltaic

448

SSRL HEADLINES March 2009  

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

9 March, 2009 9 March, 2009 __________________________________________________________________________ Contents of this Issue: Science Highlight - Scientists Identify Achilles' Heel of Flu Viruses Science Highlight - Macroscopic Quantum Insulator State Observed SLAC to Receive $68.3 Million in Recovery Act Funding SSRL's New CAMS Group has Great Chemistry XAS Experiments Resume on the 'New' BL4-1 SLAC Shines in Condensed Matter Physics at the March APS Meeting New Alloys under Pressure Studied by Photon Science Faculty Member SON, GERT and RWT1 User Safety Training Now Available via the Web New X-ray/VUV Proposal Deadlines Upcoming Photon Science-Related Workshops, Conferences and Schools __________________________________________________________________________ 1. Science Highlight - Scientists Identify Achilles' Heel of Flu

449

A casting and imaging technique for determining void geometry and relative permeability behavior of a single fracture specimen  

DOE Green Energy (OSTI)

A casting technique has been developed for making translucent replicas of the void space of natural rock fractures. Attenuation of light shined through the cast combined with digital image analysis provides a pointwise definition of fracture apertures. The technique has been applied to a fracture specimen from Dixie Valley, Nevada, and the measured void space geometry has been used to develop theoretical predictions of two-phase relative permeability. A strong anisotropy in relative permeabilities has been found, which is caused by highly anisotropic spatial correlations among fracture apertures. 16 refs., 6 figs.

Cox, B.L.; Pruess, K.; Persoff, P.

1990-01-01T23:59:59.000Z

450

Photon Statistics of a Non-Stationary Periodically Driven Single-Photon Source  

E-Print Network (OSTI)

We investigate the photon statistics of a single-photon source that operates under non-stationary conditions. The photons are emitted by shining a periodic sequence of laser pulses on single atoms falling randomly through a high-finesse optical cavity. Strong antibunching is found in the intensity correlation of the emitted light, demonstrating that a single atom emits photons one-by-one. However, the number of atoms interacting with the cavity follows a Poissonian statistics so that, on average, no sub-Poissonian photon statistics is obtained, unless the measurement is conditioned on the presence of single atoms.

M. Hennrich; T. Legero; A. Kuhn; G. Rempe

2004-06-05T23:59:59.000Z

451

Optical Resonators in Current and Future Experiments of the ALPS Collaboration  

Science Conference Proceedings (OSTI)

The ALPS collaboration runs a “light shining through a wall” (LSW) experiment to search for weakly interacting sub?eV particles (WISPs). Its sensitivity is significantly enhanced by the incorporation of a large?scale production resonator and a small?scale high?power resonant second harmonic generator. Here we report on important experimental details and limitations of these resonators and derive recommendations for further experiments. A very promising improvement for a future ALPS experiment is the incorporation of an additional large?scale regeneration resonator. We present a rough sketch of how to combine a regeneration resonator with a single?photon counter (SPC) as detector for regenerated photons.

T. Meier; The ALPS collaboration

2010-01-01T23:59:59.000Z

452

Charm of Cambridge  

E-Print Network (OSTI)

science laboratories and science parks which, like the outer part of a light bulb, give illumination and brilliance to the filament which is at the centre of the city. This bulb shines in the East Anglian gloom and attracts people from all around the world... . Cambridge also has the charm of a place which is not quite real, ethereal. It is light, open, inviting, and yet constantly elusive, like Keats’ maiden after whom the poet or suitor follows ‘in mad pursuit’ but never attains. The day visitor or even...

Macfarlane, Alan

2013-08-07T23:59:59.000Z

453

GammeV: A gamma to milli-eV particle search at Fermilab  

SciTech Connect

GammeV is an experiment conducted at Fermilab that employs the light shining through a wall technique to search for axion-like particles and employs a particle in a jar technique to search for dilaton-like chameleon particles. We obtain limits on the coupling of photons to an axion-like particle that extend previous limits for both scalars and pseudoscalars in the milli-eV mass range. We are able to exclude the axion-like particle interpretation of the anomalous PVLAS 2006 result by more than 5 standard deviations. We also present results on a search for chameleons and set limits on their possible coupling to photons.

Wester, William Carl, III; /Fermilab

2008-10-01T23:59:59.000Z

454

GammeV: a milli-eV particle search at Fermilab  

E-Print Network (OSTI)

GammeV is an experiment conducted at Fermilab that employs the light shining through a wall technique to search for axion-like particles and employs a particle in a jar technique to search for dilaton-like chameleon particles. We obtain limits on the coupling of photons to an axion-like particle that extend previous limits for both scalars and pseudoscalars in the milli-eV mass range. We are able to exclude the axion-like particle interpretation of the anomalous PVLAS 2006 result by more than 5 standard deviations. We also present results on a search for chameleons and set limits on their possible coupling to photons.

Wester, W

2008-01-01T23:59:59.000Z

455

GammeV: a milli-eV particle search at Fermilab  

E-Print Network (OSTI)

GammeV is an experiment conducted at Fermilab that employs the light shining through a wall technique to search for axion-like particles and employs a particle in a jar technique to search for dilaton-like chameleon particles. We obtain limits on the coupling of photons to an axion-like particle that extend previous limits for both scalars and pseudoscalars in the milli-eV mass range. We are able to exclude the axion-like particle interpretation of the anomalous PVLAS 2006 result by more than 5 standard deviations. We also present results on a search for chameleons and set limits on their possible coupling to photons.

W. Wester; for the GammeV Collaboration

2008-10-24T23:59:59.000Z

456

Characterizing the complete hierarchy of correlations in an $n$-party system  

E-Print Network (OSTI)

A characterization of the complete correlation structure in an $n$-party system is proposed in terms of a series of $(k,n)$ threshold classical secret sharing protocols ($2\\le k\\le n$). The total correlation is shown to be the sum of independent correlations of 2-, 3-,$...$, $n$-parties. Our result unifies several earlier scattered works, and shines new light at the important topic of multi-party quantum entanglement. As an application, we explicitly construct the hierarchy of correlations in an $n$-qubit graph state.

D. L. Zhou; L. You

2007-01-07T23:59:59.000Z

457

New Experimental limit on Optical Photon Coupling to Neutral, Scalar Bosons  

E-Print Network (OSTI)

We report on the first results of a sensitive search for scalar coupling of photons to a light neutral boson in the mass range of approximately 1.0 milli-electron volts and coupling strength greater than 10$^-6$ GeV$^-1$ using optical photons. This was a photon regeneration experiment using the "light shining through a wall" technique in which laser light was passed through a strong magnetic field upstream of an optical beam dump; regenerated laser light was then searched for downstream of a second magnetic field region optically shielded from the former. Our results show no evidence for scalar coupling in this region of parameter space.

A. Afanasev; O. K. Baker; K. B. Beard; G. Biallas; J. Boyce; M. Minarni; R. Ramdon; M. Shinn; P. Slocum

2008-06-16T23:59:59.000Z

458

Advanced Thermal Energy Storage: Novel Tuning of Critical Fluctuations for Advanced Thermal Energy Storage  

Science Conference Proceedings (OSTI)

HEATS Project: NAVITASMAX is developing a novel thermal energy storage solution. This innovative technology is based on simple and complex supercritical fluids— substances where distinct liquid and gas phases do not exist, and tuning the properties of these fluid systems to increase their ability to store more heat. In solar thermal storage systems, heat can be stored in NAVITASMAX’s system during the day and released at night—when the sun is not shining—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in NAVITASMAX’s system at night and released to produce electricity during daytime peak-demand hours.

None

2011-12-01T23:59:59.000Z

459

Himalayan Journal of Sciences Volume 2, Issue 3, January - June 2004  

E-Print Network (OSTI)

: Environmental change and the well-being of mountain peoples Fifteen years ago, the Himalayan Dilemma buried the most popular environmental paradigm of the 80s. What will it take for policy-makers to get the message? Jack D Ives Page 17 essay Scientists: Four... : these are opportuni- ties for creative research and significant contributions. Third, expect and accept wasted time: there is no shining path to the truth. Fourth, study the history of sci- ence, and your field in particular, in order to develop an appreciation...

Mainali, Kumar P

2004-01-01T23:59:59.000Z

460

Technology Partnerships Office  

Science Conference Proceedings (OSTI)

... A mercury-free silver dental amalgam for bright fillings. Description. Replace conventional dental amalgams with a mercury-free metallic restorative. ...

Note: This page contains sample records for the topic "all-stars shine bright" 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

NISTTech  

Science Conference Proceedings (OSTI)

... A mercury-free silver dental amalgam for bright fillings Description Replace conventional dental amalgams with a mercury-free metallic restorative. ...

462

ENERGY DEMAND AND CONSERVATION IN KENYA: INITIAL APPRAISAL  

E-Print Network (OSTI)

were interviewed, producers of solar heating equipment, andThe prospects for solar water heating in Kenya are bright.particularly wnere solar water heating or most industrial

Schipper, Lee

2013-01-01T23:59:59.000Z

463

Answers: Strangler fig, wolverine, roadrunner, Musk ox, Hesperornis, scapolite, mosquito, Pakicetus, coevolution, Galapagos finches, Yucca, Beagle, platypus, milk snake (Lampropeltis triangulum).  

E-Print Network (OSTI)

& Bugtown) Aquatic diver Flightless bird with wings reduced Penguin I am not Minerals a glow Bright yellow stripes black on red Haiku - All ages #12;

Peterson, Blake R.

464

About the 12th International Conference on Metal Organic Vapor ...  

Science Conference Proceedings (OSTI)

... phosphide based materials; Gallium arsenide based materials; High brightness LEDs and solid state lighting; Growth of device structures: LEDs, laser diodes, ...

465

Welding - Programmaster.org  

Science Conference Proceedings (OSTI)

Feb 15, 2010 ... High Brightness Nd:YAG Laser Welding of Aluminum 5754: Jyotirmoy Mazumder 1; Leslie Pipe1; Yi Liu1; David Roessler1; 1University of ...

466

Alloy Design for High Strength Nickel-Base Single Crystal Alloys  

Science Conference Proceedings (OSTI)

Under a suitable lighting condition. (a kind of optical darkfield observation condition), it was found that the rafted .structure[lO] area looked bright, and deformed ...

467

AEROSPACE TECHNOLOGY REVIEW FOR LBL WINDOW/PASSIVE SOLAR PROGRAM FINAL REPORT  

E-Print Network (OSTI)

projects such as home heating and cooling is the overall production cost of converting solarcosts do not project a bright future for this method in solar

Viswanathan, R.

2011-01-01T23:59:59.000Z

468

Talkin' Bout Wind Generation | Department of Energy  

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

Administration Solar Generation Has a Bright Future Talkin' Bout Wind Generation Get Daily Energy Analysis Delivered to Your Website Natural Gas Production and U.S. Oil Imports...

469

New ATP Awards Announced in 2004  

Science Conference Proceedings (OSTI)

... Demonstrate a white light-emitting diode (LED) lamp package with an integrated chip approach that would more than quadruple the brightness and ...

2011-10-19T23:59:59.000Z

470

ATP Project Brief - 00-00-7011  

Science Conference Proceedings (OSTI)

... Demonstrate a white light-emitting diode (LED) lamp package with an integrated chip approach that would more than quadruple the brightness and ...

471

2008 Solar Technologies Market Report  

E-Print Network (OSTI)

as BrightSource Energy, First Solar, Sun Power, Solel, andsolar is by far the most abundant. With 162,000 terawatts reaching Earth from the sun,

Price, S.

2010-01-01T23:59:59.000Z

472

Design, construction and testing of a high-vacuum anneal chamber for in-situ crystallisation of silicon thin-film solar cells.  

E-Print Network (OSTI)

??Thin-film solar cells on glass substrates are likely to have a bright future due to the potentially low costs and the short energy payback times.… (more)

Weber, Jürgen Wolfgang

2006-01-01T23:59:59.000Z

473

High school interns opt for research over relaxation | Princeton...  

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

Science Education department, work on an experiment investigating small bright sparks in gas bubbles inside liquids to better understand the way fluids respond to high voltages....

474

Metrology for Nanoimprint Lithography  

Science Conference Proceedings (OSTI)

... Intense R&D activities are currently centered on CMOS logic devices, bit patterned data storage media, high brightness LEDs, patterned biological ...

2013-07-23T23:59:59.000Z

475

Polymers Division 2000 Programs and Accomplishments  

Science Conference Proceedings (OSTI)

... of the capillary apparatus (below), the bright cube in the center surrounds a capillary tube that is held in place by the steel gland fittings behind it. ...

2012-10-02T23:59:59.000Z

476

FY 2000 PROGRAMS AND ACCOMPLISHMENTS  

Science Conference Proceedings (OSTI)

... of the capillary apparatus (below), the bright cube in the center surrounds a capillary tube that is held in place by the steel gland fittings behind it. ...

2012-10-02T23:59:59.000Z

477

The effect of carbon monoxide on the colour stability and quality of yellowfin tuna (Thunnus Albacares) muscle.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: Processors face the problem of extending the shelf-life of yellowfin tuna, while still maintaining the desirable bright red colour. Methods which have commonly… (more)

Neethling, Nikki E.

2013-01-01T23:59:59.000Z

478

Session Papers Quality Measurement Experiments Within the Atmospheric...  

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

temperatures to total water vapor and total liquid water in the column directly overhead, are derived from model-calculated brightness temperatures. The instrument uses a...

479

Physics Out Loud - Cerenkov Light  

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

Baryon Previous Video (Baryon) Physics Out Loud Main Index Next Video (Cross Section) Cross Section Cerenkov Light The bright blue glow from nuclear reactors is Cerenkov light....

480

Studies on the gamma-ray burst phenomenon and on its use to probe the high redshift universe.  

E-Print Network (OSTI)

??Gamma-ray bursts (GRBs) are an enigmatic phenomenon whose physics and origins are still to be fully understood. Furthermore, thanks to their exceptional brightness they can… (more)

Vergani, Susanna D.

2009-01-01T23:59:59.000Z

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


481

Manufacturing Science and Technology: Advanced Manufacturing...  

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

students: As crucial technologies for the military and industry, optics and photonics offer a bright career future. And optics professional are helping kids see the...

482

Science and Technology Sampler: NIST Highlights from 2013 ...  

Science Conference Proceedings (OSTI)

... seen as long bright lines radiating from ... scientists and engineers often work behind the ... firefighting practices,” saving firefighters' lives and protecting ...

2013-12-17T23:59:59.000Z

483

Finding the 3-D Structure of a Key Drug Target for Diabetes ...  

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

Cool Muscles: Storing Elastic Energy for Flight A Further Understanding of Superconductivity New Family of Tiny Crystals Glow Bright in LED Lights Science Highlights...

484

Physics Out Loud - Cherenkov Light  

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

Baryon Previous Video (Baryon) Physics Out Loud Main Index Next Video (Cross Section) Cross Section Cherenkov Light The bright blue glow from nuclear reactors is Cherenkov light....

485

L3, Fabrication of Top-Gated Sub-10 nm Epitaxial Graphene ...  

Science Conference Proceedings (OSTI)

HSQ lines (width ~10 nm) on graphene were fabricated and then the HSQ line .... Electroluminescent Devices with a Low Turn-on Voltage and High Brightness.

486

Hollow-cone Dark-field Transmission Electron Microscopy for Grain ...  

Science Conference Proceedings (OSTI)

Conventional bright-field and dark-field TEM images often cannot provide such ... Stages of Precipitation of Alpha Platelets in the Beta Matrix of Titanium Alloys.

487

NSLS X-Ray Storage Ring  

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

magnetic fields on the lattice are minimized, the brightness is optimized for short high- field wigglers, and the low vertical beta function allows the development of very small...

488

Advanced Free Electron Laser Facility - Los Alamos National Lab ...  

The AFEL Facility is used for applications requiring high-brightness electron beams or a tunable source of high-energy infrared light pulses in the wavelength range ...

489

Microsoft Word - SPPS_report05.doc  

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

University, Stanford, CA, USA The ultrafast, high brightness x-ray free electron laser (XFEL) sources of the future have the potential to revolutionize the study of time...

490

Clallam County PUD - Residential Solar Rebate Program (Washington...  

Open Energy Info (EERE)

Heat Water specifications and must be installed by Bright Way certified installers. All solar installations must be approved by the PUD prior to installation and must be...

491

Mount Vernon, Ohio: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Knox County, Ohio. It falls under Ohio's 18th congressional district.12 Registered Energy Companies in Mount Vernon, Ohio Blight-to-Bright Replex Plastics References US...

492

Nanocomposite scintillator and detector  

DOE Patents (OSTI)

A nanocomposite scintillator is prepared using fast, bright, rare-earth doped nanopowder phosphor and a binder that is transparent to the emission of the phosphor.

Cooke, D. Wayne (Santa Fe, NM); McKigney, Edward A. (Los Alamos, NM); Muenchausen, Ross E. (Los Alamos, NM); Bennett, Bryan L. (Los Alamos, NM); Ott, Kevin C. (Los Alamos, NM); Del Sesto, Rico E. (Los Alamos, NM); McCleskey, T. Mark (Los Alamos, NM); Burrell, Anthony K. (Los Alamos, NM)

2009-06-16T23:59:59.000Z

493

Platinum-Loading Reduction in PEM Fuel Cells - Available ...  

TEM bright-field and dark-field images of a commercial Pt/C catalyst and a nanoscale Pt-embedded tantalum oxide catalyst. ... Energy & Utilities; ...

494

LOW OST TIO? NANOPARTI LES  

Cost-Effective Easy Scale-Up Fast Predictable ... automotive and solar energy for their excellent conversion efficiency and increased brightness.

495

NSLS Insertion Devices  

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

Insertion Devices MGU-25 VUV Ring Insertion Devices X-Ray Ring Insertion Devices VISA NISUS Flux & Brightness of NSLS IDs Magnetic Measurement Lab...

496

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

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

2012 San Jose, CA Low Cost Lithography for High Brightness LED Manufacturing Light Emitting Diode Manufacturing projection lithographic tool for improved accuracy and larger...

497

Optical/electrical particle measurement system  

Science Conference Proceedings (OSTI)

... The microscope is outfitted with fast, computer-controlled cameras (both optical and fluorescence) and with a bright 480 nm light emitting diode(LED ...

2013-09-16T23:59:59.000Z

498

Solid-State Lighting: The Fifth Annual DOE Solid-State Lighting...  

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

for Sapphire Wafers Intended for Use for Manufacturing High Brightness-Light Emitting Diode Devices," and recently approved SEMI Draft Document 5420A, "Specification for...

499

Power control architectures for cold cathode fluorescent lamp and light emitting diode based light sources.  

E-Print Network (OSTI)

?? In this dissertation, two different energy efficient power supply topologies are introduced for controlling cold cathode fluorescent lamp (CCFL) and high-brightness light emitting diode… (more)

Doshi, Montu V.

2010-01-01T23:59:59.000Z

500

Draft Special Publication 800-76-2, Biometric Specifications ...  

Science Conference Proceedings (OSTI)

... Note that although FBI requirements drive the sensor ... to bright light sources, such as direct sunlight, is ... A template generator is certified on the basis ...

2013-04-25T23:59:59.000Z