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Note: This page contains sample records for the topic "tungsten halogen spotlights" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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1

Spectral irradiance model for tungsten halogen lamps in 340-850 nm wavelength range  

Science Conference Proceedings (OSTI)

We have developed a physical model for the spectral irradiance of 1 kW tungsten halogen incandescent lamps for the wavelength range 340-850 nm. The model consists of the Planck's radiation law, published values for the emissivity of tungsten, and a residual spectral correction function taking into account unknown factors of the lamp. The correction function was determined by measuring the spectra of a 1000 W, quartz-halogen, tungsten coiled filament (FEL) lamp at different temperatures. The new model was tested with lamps of types FEL and 1000 W, 120 V quartz halogen (DXW). Comparisons with measurements of two national standards laboratories indicate that the model can account for the spectral irradiance values of lamps with an agreement better than 1% throughout the spectral region studied. We further demonstrate that the spectral irradiance of a lamp can be predicted with an expanded uncertainty of 2.6% if the color temperature and illuminance values for the lamp are known with expanded uncertainties of 20 K and 2%, respectively. In addition, it is suggested that the spectral irradiance may be derived from resistance measurements of the filament with lamp on and off.

Ojanen, Maija; Kaerhae, Petri; Ikonen, Erkki

2010-02-10T23:59:59.000Z

2

Spotlights Archive  

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

lm/spotlights-archive Office of Legacy Management 1000 lm/spotlights-archive Office of Legacy Management 1000 Independence Avenue, SW Washington, DC 20585 202-586-3559 en Agencies Assist LM to Develop Reports on Defense-Related Uranium Mines http://energy.gov/lm/articles/agencies-assist-lm-develop-reports-defense-related-uranium-mines Agencies Assist LM to Develop Reports on Defense-Related Uranium Mines

3

Spotlight Archives | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

Spotlight Archives Spotlight Archives These lists provide links to the archives of individual universities and community colleges with connections to DOE scientific research programs that have previously been "spotlighted" by OSTI. The universities and community colleges are listed by Spotlight date. University Archive University of California Berkeley September 2013 University of Missouri July 2013 The University of Rochester May 2013 The University of Maryland March 2013 Delaware State University January 2013 Washington University in St. Louis November 2012 The University of Tennessee - Knoxville September 2012 Clemson University July 2012 Pennsylvania State University May 2012 University of Florida March 2012 1 2 3 next › last » Community College Archive

4

DEP - Spotlight Archive  

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

Spotlight Archive Summer Institute on Sustainability and Energy is now taking applications. Read the story. VFP participant receives award Armando Mireles, a participant in...

5

Energy efficient alternatives to halogen torchieres  

Science Conference Proceedings (OSTI)

A series of novel energy efficient torchiere systems have been developed using compact fluorescent lamps (CFLs). These systems were studied photometrically and compared with the performance of traditional commercially available tungsten halogen sources. Gonio-photometric data and power assessments indicate that significant lighting energy savings can be obtained by utilizing CFL sources instead of standard tungsten halogen sources. This energy savings is jointly due to the higher source efficacy of the CFLs and the surprisingly poor performance of the imported 300 Watt halogen lamps. Experimental data shows that a 50 to 60 Watt CFL will effectively lumen match a variety of 300 Watt tungsten halogen sources with 5 to 10 times the efficacy. CFL torchieres have additional benefits of higher power quality and cooler lamp operating temperature, making them safer fixtures.

Siminovitch, M.; Marr, L.; Mitchell, J.; Page, E.

1997-03-01T23:59:59.000Z

6

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

7

Los Alamos Lab: MPA: Spotlight  

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

Spotlight on our people Jonathan Betts, MPA-NHMFL Jonathan Betts could be considered a jack-of-all-trades. The English native has gone from wiring thermometers for a small company...

8

Archives and History Office: Past Spotlights  

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

About This Site > Spotlights Past Spotlights August 22, 2013 - The Universe Through Fermi's Eyes: Celebrating the First Five Years Fermi's map of the gamma-ray sky, created with...

9

Spotlights Archive | Department of Energy  

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

Spotlights Archive Spotlights Archive Spotlights Archive RSS January 9, 2014 Agencies Assist LM to Develop Reports on Defense-Related Uranium Mines The U.S. Department of Energy (DOE) Office of Legacy Management (LM) has made substantial progress researching and consulting with the U.S. Environmental Protection Agency (EPA), the U.S. Department of the Interior (DOI), other relevant federal agencies, affected states and tribes, and the interested public to obtain data and other technical information that will inform the Report to Congress on defense-related legacy uranium mines. October 23, 2013 Legacy Management Work Progresses on Defense-Related Uranium Mines Report to Congress The U.S. Department of Energy Office of Legacy Management (LM) continues to work on a report to Congress regarding defense-related legacy uranium

10

Lab Spotlight: Argonne National Laboratory  

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

Lab Spotlight: Argonne National Laboratory Lab Spotlight: Argonne National Laboratory ultrananocrystalline diamond (UNCD) technology Researchers John Carlisle (left) and Orlando Auciello (right) are developing an ultrathin biocompatible coating for the device. Creating Diamond Coatings for the Retinal Implant Argonne National Laboratory (ANL) plays a critical role in the success of the electrode implants used in the Artificial Retina Project. That's where researchers Orlando Auciello and colleague John Carlisle are using their patented ultrananocrystalline diamond (UNCD) technology to apply a revolutionary new coating to the retinal prosthetic device. The new packaging promises to provide a very thin, ultrasmooth film that will be far more compact and biocompatible than the bulky materials used to encase

11

Solar Decathlon Technology Spotlight: Structural Insulated Panels |  

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

Decathlon Technology Spotlight: Structural Insulated Panels Decathlon Technology Spotlight: Structural Insulated Panels Solar Decathlon Technology Spotlight: Structural Insulated Panels September 20, 2011 - 7:13am Addthis These structural insulated panels consist of foam insulation sandwiched between oriented strand boards. (Courtesy of Michael Bacchler) These structural insulated panels consist of foam insulation sandwiched between oriented strand boards. (Courtesy of Michael Bacchler) Alexis Powers EDITOR'S NOTE: Originally posted on the Solar Decathlon News Blog on September 19, 2011. Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Structural insulated panels (SIPs) are prefabricated structural elements

12

POWGEN User Spotlight | ORNL Neutron Sciences  

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

Team User Information Operating Status Specifications Sample Environment Research Highlights Research Publications Printable Fact Sheet Mail-In Program User Spotlight Video...

13

EPA's Science Matters Newsletter Puts Spotlight on Climate Change  

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

EPA's Science Matters Newsletter Puts Spotlight on Climate Change Print E-mail EPA's Science Matters Newsletter Puts Spotlight on Climate Change Friday, July 26, 2013 Featured by...

14

In The Spotlight | National Nuclear Security Administration  

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

In The Spotlight | National Nuclear Security Administration In The Spotlight | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog In The Spotlight Home > About Us > Who We Are > In The Spotlight In The Spotlight Berni Alder, 2009 National Medal of Science Winner Berni Alder Role: Retired lab physicist and computational pioneer, Lawrence Livermore

15

Manufacturing Spotlight: Boosting American Competitiveness | Department of  

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

Manufacturing Spotlight: Boosting American Competitiveness Manufacturing Spotlight: Boosting American Competitiveness Manufacturing Spotlight: Boosting American Competitiveness January 6, 2014 - 1:06pm Addthis Libby Wayman Clean Energy Manufacturing Initiative Director Advancing the nation's clean energy manufacturing industry helps to capture the value of U.S. innovation in clean energy technologies, fosters further innovation right here in America, and makes U.S. manufacturers more competitive by reducing their energy costs - all while creating jobs and building a more sustainable planet for future generations. Industry and government are working together to expand American leadership in this sector by bringing new clean energy technologies to the marketplace and making manufacturing processes more energy efficient.

16

Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach  

Science Conference Proceedings (OSTI)

From the Publisher:Spotlight-mode Synthetic Aperture Radar: A Signal Processing Approach describes an important mode of synthetic aperture radar (SAR) imaging, known as spotlight-mode SAR. By treating the subject via the principles of signal processing, ...

Paul Thompson; Daniel E. Wahl; Paul H. Eichel; Dennis C. Ghiglia; Charles V. Jakowatz

1996-01-01T23:59:59.000Z

17

Spotlighting Howard University | Department of Energy  

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

Spotlighting Howard University Spotlighting Howard University Spotlighting Howard University February 27, 2012 - 2:45pm Addthis Students at Howard University are helping to solve one of the biggest challenges facing renewable energy. | Photo by Jim Pleasant. Students at Howard University are helping to solve one of the biggest challenges facing renewable energy. | Photo by Jim Pleasant. Kate Bannan Communications and Outreach Specialist Students at Washington, D.C.'s Howard University are helping to solve one of the biggest challenges facing renewable energy: how to introduce renewable resource-integrated networks to the nation's electricity grid. Thanks in part to funding by the Energy Department's Minority University Research Associates (MURA) Program, the hands-on research of students at

18

Metal halogen electrochemical cell  

DOE Patents (OSTI)

It has now been discovered that reduction in the coulombic efficiency of metal halogen cells can be minimized if the microporous separator employed in such cells is selected from one which is preferably wet by the aqueous electrolyte and is not wet substantially by the cathodic halogen.

Bellows, Richard J. (Hampton, NJ); Kantner, Edward (E. Brunswick, NJ)

1988-08-23T23:59:59.000Z

19

High Performance Builder Spotlight: Green Coast Enterprises - New Orleans,  

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

High Performance Builder Spotlight: Green Coast Enterprises - New High Performance Builder Spotlight: Green Coast Enterprises - New Orleans, Louisiana High Performance Builder Spotlight: Green Coast Enterprises - New Orleans, Louisiana This four-page case study describes Green Coast Enterprises efforts to rebuild hurricane-ravaged New Orleans through Project Home Again. green_coast_enterprises.pdf More Documents & Publications High Performance Builder Spotlight: Green Coast Enterprises - New Orleans, Louisiana Rising Above the Water: New Orleans Implements Energy Efficiency and Sustainability Practices Following Hurricanes Katrina and Rita (Fact Sheet), Integrated Deployment: Disaster Recovery (ID) Rising Above the Water: New Orleans Implements Energy Efficiency and Sustainability Practices Following Hurricanes Katrina and Rita (Fact

20

Better Buildings - Spotlight on Portland, Oregon; Financing and...  

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

betterbuildings.energy.govneighborhoods 1 June 2012 Financing and Incentives Spotlight on Portland, Oregon: Use Incentives to Get Attention and Encourage Deep Savings Key...

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Training - Nuclear forensics in spotlight | ornl.gov  

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

Training - Nuclear forensics in spotlight Federal employees and select personnel from national laboratories will gather at Oak Ridge National Laboratory in February for a two-day...

22

Better Buildings: Workforce: Spotlight on Portland, Oregon: Making...  

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

neighborhoods 1 June 2012 Workforce Spotlight on Portland, Oregon: Making the Program Work for Contractors Key Takeaways Solicit ongoing feedback from...

23

Better Buildings: Workforce, Spotlight on Maine: Contractor Sales...  

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

visit betterbuildings.energy.govneighborhoods. Spotlight on Maine: Contractor Sales Training Boosts Energy Upgrade Conversions When Efficiency Maine launched a new residential...

24

Spotlight on Austin, Texas: Best Offer Ever Produces Upgrades...  

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

Spotlight on Austin, Texas: Best Offer Ever Produces Upgrades in Record Time The Better Buildings Neighborhood Program is part of the national Better Buildings Initiative led by...

25

Award Spotlight Could Return to EM-Developed Technology for Tracking...  

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

Award Spotlight Could Return to EM-Developed Technology for Tracking Shipments Award Spotlight Could Return to EM-Developed Technology for Tracking Shipments August 27, 2013 -...

26

DOE Solar Decathlon: News Blog » Technology Spotlights  

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

Technology Spotlights Technology Spotlights Below you will find Solar Decathlon news from the Technology Spotlights archive, sorted by date. Technology Spotlight: Solar Water Heating Friday, September 27, 2013 By Solar Decathlon Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Solar water heating systems make hot water for residential uses such as bathing, laundering, and dish washing. Generally less expensive than photovoltaic panels, these systems provide homeowners with a cost-effective way to harness the sun's energy. Photo of a wooden house with PV panels and a solar hot water system on the roof. Middlebury College's U.S. Department of Energy Solar Decathlon 211 entry,

27

Halogenation of cobalt dicarbollide  

DOE Patents (OSTI)

A method for selectively adding chlorine, bromine, or iodine to cobalt dicarbollide anions by means of electrophilic substitution reactions. Halogens are added only to the B10 and B10' positions of the anion. The process involves use of hypohalous acid or N-halosuccinimide or gaseous chlorine in the presence of iron.

Hurlburt, Paul K. (Los Alamos, NM); Abney, Kent D. (Los Alamos, NM); Kinkead, Scott A. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

28

DOE Solar Decathlon: News Blog » Technology Spotlights  

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

'Technology Spotlights' 'Technology Spotlights' Technology Spotlight: Solar Water Heating Friday, September 27, 2013 By Solar Decathlon Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Solar water heating systems make hot water for residential uses such as bathing, laundering, and dish washing. Generally less expensive than photovoltaic panels, these systems provide homeowners with a cost-effective way to harness the sun's energy. Photo of a wooden house with PV panels and a solar hot water system on the roof. Middlebury College's U.S. Department of Energy Solar Decathlon 211 entry, Self-Reliance, had two roof-mounted solar hot water collector arrays (right) that circulated glycol through vacuum-insulated borosilicate glass

29

HSO SPOTLIGHT No 01 2012 HSO Meeting Schedule for 2012  

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

HSO SPOTLIGHT No. 01-2012: 2012 Schedule of Quarterly HSO Meetings HSO SPOTLIGHT No. 01-2012: 2012 Schedule of Quarterly HSO Meetings What is the issue? Meeting and Training Schedule Why do we need this? Informational Who is impacted? HSOs What does the HSO need to do? This is an informational Spotlight only NOTICE: The information in all HSO Spotlights applies only at Department of Energy (DOE) Headquarters facilities in the Washington, DC area. They are not intended to apply at DOE field sites, which may have entirely different local procedures. The HSO Program Manager has established the schedule below for quarterly HSO meetings in 2012. Please note that the topics listed are subject to change. HSO Quarterly Meeting and Training Schedule 2011 10:00 to Noon each day FORS Date / Room

30

Hydrogen Production by PEM Electrolysis: Spotlight on Giner and...  

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

PRODUCTION BY PEM ELECTROLYSIS: SPOTLIGHT ON GINER AND PROTON US DOE WEBINAR (May 23, 2011) 2 Webinar Outline *Water Electrolysis H 2 Production Overview DOE-EERE-FCT: Eric L....

31

Spotlight on Austin, Texas: Let Your Contractor Be Your Guide...  

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

1 Spotlight on Austin, Texas: Let Your Contractor Be Your Guide for Big Rewards Workforce All About Contractors Austin Energy, a municipally owned utility, has a long history of...

32

HALOGEN COLLECTOR TEST PROGRAM  

SciTech Connect

Efficiency tests of removal of radioactive iodine from an air stream were performed on the following halogen collectors: a silver-plated copper-ribbon bed: activatedcharcoal beds, 0.5 and l.0 in. deep: a molecular-sieve bed; and a sodium thiosulfate bed. The tests were conducted at 70 and 160 deg F and at 70 and 95% relative humidity. Only the activated-charcoal collectors achieved a high iodineremoval efficiency over a sustained period at the various operating conditions. (C.J.G.)

1960-03-01T23:59:59.000Z

33

Moab Uranium Mill Tailings Cleanup Project Steps into Spotlight at  

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

Uranium Mill Tailings Cleanup Project Steps into Spotlight at Uranium Mill Tailings Cleanup Project Steps into Spotlight at International Meeting in Vienna Moab Uranium Mill Tailings Cleanup Project Steps into Spotlight at International Meeting in Vienna October 22, 2012 - 12:00pm Addthis Moab Federal Project Director Donald Metzler presents at the Uranium Mining Remediation Exchange Group meeting in Germany in September 2011. Moab Federal Project Director Donald Metzler presents at the Uranium Mining Remediation Exchange Group meeting in Germany in September 2011. Moab Federal Project Director Donald Metzler Moab Federal Project Director Donald Metzler Moab Federal Project Director Donald Metzler presents at the Uranium Mining Remediation Exchange Group meeting in Germany in September 2011. Moab Federal Project Director Donald Metzler

34

Hydrogen Production by PEM Electrolysis: Spotlight on Giner and Proton  

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

BY BY PEM ELECTROLYSIS: SPOTLIGHT ON GINER AND PROTON US DOE WEBINAR (May 23, 2011) 2 Webinar Outline *Water Electrolysis H 2 Production Overview DOE-EERE-FCT: Eric L. Miller *Spotlight: PEM Electrolysis R&D at Giner Giner Electrochemical Systems: Monjid Hamdan *Spotlight: PEM Electrolysis R&D at Proton Proton OnSite: Kathy Ayers *Q&A 3 DOE EERE-FCT Goals and Objectives Develop technologies to produce hydrogen from clean, domestic resources at a delivered and dispensed cost of $2-$4/gge Capacity (kg/day) Distributed Central 100,000,000 100,000 50,000 10,000 1,000 10 Natural Gas Reforming Photo- electro- chemical Biological Water Electrolysis (Solar) 2015-2020 Today-2015 2020-2030 Coal Gasification (No Carbon Capture) Electrolysis Water (Grid) Coal Gasification (Carbon Capture)

35

ARPA-E Technology Showcase: Project Spotlight | Department of Energy  

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

Technology Showcase: Project Spotlight Technology Showcase: Project Spotlight ARPA-E Technology Showcase: Project Spotlight March 1, 2011 - 1:49pm Addthis William Mouat explains the PolyPlus battery technology. | Energy Department photo, credit Ken Shipp. William Mouat explains the PolyPlus battery technology. | Energy Department photo, credit Ken Shipp. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs Last night, we had the chance to visit with a few of the researchers and scientists behind the exciting projects on display at the 2011 ARPA-E Energy Innovation Summit Technology Showcase. The following projects represent a few of the highlights we found: PolyPlus At Berkeley, CA-based PolyPlus Battery Company, researchers are developing a lithium-air battery that could enable an electric car to travel 500 miles

36

Atomic Data for Tungsten (W )  

Science Conference Proceedings (OSTI)

... Tungsten (W) Homepage - Introduction Finding list Select element by name. Select element by atomic number. ... Atomic Data for Tungsten (W). ...

37

Strong Lines of Tungsten ( W )  

Science Conference Proceedings (OSTI)

... Tungsten (W) Homepage - Introduction Finding list Select element by name. Select element by atomic number. ... Strong Lines of Tungsten ( W ). ...

38

Spotlight on Michigan: Sweeping the State for Ultimate Success  

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

2011 Version 2 2011 Version 2 betterbuildings.energy.gov/neighborhoods Spotlight on Michigan: Sweeping the State for Ultimate Success Service Delivery The Better Buildings Neighborhood Program is part of the national Better Buildings Initiative led by the U.S. Department of Energy. To learn how the Better Buildings Neighborhood Program is making homes more comfortable and businesses more lucrative and to read more from this Spotlight series, visit betterbuildings.energy.gov/neighborhoods. 1 A Sweeping Experiment: Better Buildings Tests Offerings in Michigan Neighborhoods BetterBuildings for Michigan is a statewide program using an innovative neighborhood "sweeps" delivery model to reach its residential target audience. Sweeps target one 420-home neighborhood at a time with a blitz of outreach, contractor scheduling, and

39

DOE Solar Decathlon: News Blog » Technology Spotlights  

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

Solar Water Heating Solar Water Heating http://www.solardecathlon.gov/blog/archives/2504 http://www.solardecathlon.gov/blog/archives/2504#comments Sat, 28 Sep 2013 00:49:13 +0000 http://www.solardecathlon.gov/blog/?p=2504 http://www.solardecathlon.gov/blog/archives/2504/feed 0 Technology Spotlight: Structural Insulated Panels http://www.solardecathlon.gov/blog/archives/1530 http://www.solardecathlon.gov/blog/archives/1530#comments Mon, 19 Sep 2011 17:42:18 +0000 http://www.solardecathlon.gov/blog/?p=1530 http://www.solardecathlon.gov/blog/archives/1530/feed 1 Technology Spotlight: Radiant Heating Systems http://www.solardecathlon.gov/blog/archives/1418 http://www.solardecathlon.gov/blog/archives/1418#comments Thu, 15 Sep 2011 19:52:35 +0000 http://www.solardecathlon.gov/blog/?p=1418

40

EPA's Science Matters Newsletter Puts Spotlight on Climate Change  

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

EPA's Science Matters Newsletter Puts Spotlight on Climate Change Print E-mail EPA's Science Matters Newsletter Puts Spotlight on Climate Change Print E-mail EPA's Science Matters Newsletter Puts Spotlight on Climate Change Friday, July 26, 2013 Featured by EPA, a member of the U.S. Global Change Research Program Heat waves. Drought. "Super" storms. Flooding. How do we put such events into perspective? And more importantly, how do we take collective action to mitigate and adapt to the increasingly clear evidence that the effects of climate change are unfolding? As the nation did decades ago when faced with threats to its air, water, and land-the first steps toward meeting environmental challenges start with science. These are the issues addressed in a full edition of Science Matters, a publication put out by the Environmental Protection Agency (EPA). The newsletter explores the impacts of climate change and highlights the foundational role played by science to advance an understanding of the impacts of global change.

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Zevenhoven & Kilpinen Halogens, dioxins/furans 17.6.2001 7-1 Chapter 7 Halogens,  

E-Print Network (OSTI)

and important halogen is chlorine. In nature, fluorine is mainly found in minerals such as CaF2 and Na2AlF6 for the other halogens - see Table 7.1. Natural gas and oil-derived fuels contain very small amounts of halogens Natural gas - * Iodine 0.5 - 1.5 mg/kg In biomasses, especially straw, the presence of halogens is largely

Zevenhoven, Ron

42

METHOD FOR PRODUCING ISOTOPIC METHANES AND PARTIALLY HALOGENATED DERIVATIVES THEROF  

DOE Patents (OSTI)

A method is given for producing isotopic methanes and/ or partially halogenated derivatives. Lithium hydride, deuteride, or tritide is reacted with a halogenated methane or with a halogenated methane in combination with free halogen. The process is conveniently carried out by passing a halogenated methane preferably at low pressures or in an admixture with an inert gas through a fixed bed of finely divided lithium hydride heated initially to temperatures of 100 to 200 deg C depending upon the halogenated methane used.

Frazer, J.W.

1959-08-18T23:59:59.000Z

43

Spotlighting quantum critical points via quantum correlations at finite temperatures  

Science Conference Proceedings (OSTI)

We extend the program initiated by T. Werlang et al. [Phys. Rev. Lett. 105, 095702 (2010)] in several directions. Firstly, we investigate how useful quantum correlations, such as entanglement and quantum discord, are in the detection of critical points of quantum phase transitions when the system is at finite temperatures. For that purpose we study several thermalized spin models in the thermodynamic limit, namely, the XXZ model, the XY model, and the Ising model, all of which with an external magnetic field. We compare the ability of quantum discord, entanglement, and some thermodynamic quantities to spotlight the quantum critical points for several different temperatures. Secondly, for some models we go beyond nearest neighbors and also study the behavior of entanglement and quantum discord for second nearest neighbors around the critical point at finite temperature. Finally, we furnish a more quantitative description of how good all these quantities are in spotlighting critical points of quantum phase transitions at finite T, bridging the gap between experimental data and those theoretical descriptions solely based on the unattainable absolute zero assumption.

Werlang, T.; Ribeiro, G. A. P.; Rigolin, Gustavo [Departamento de Fisica, Universidade Federal de Sao Carlos, Sao Carlos, SP 13565-905 (Brazil)

2011-06-15T23:59:59.000Z

44

Tungsten Cathode Catalyst for PEMFC  

DOE Green Energy (OSTI)

Final report for project to evaluate tungsten-based catalyst as a cathode catalyst for PEM cell applications.

Joel B. Christian; Sean P. E. Smith

2006-09-22T23:59:59.000Z

45

Home Energy Score Past Webinars and Video Spotlights | Department of Energy  

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

Home Energy Score Past Webinars and Video Spotlights Home Energy Score Past Webinars and Video Spotlights Home Energy Score Past Webinars and Video Spotlights January 3, 2014 - 1:35pm Addthis Home Energy Score Past Webinars and Video Spotlights Here are past webinars and materials from Home Energy Score. July 30, 2013: Home Energy Score Program Overview for the American Gas Association U.S. DOE is getting ready to launch a new version of the Home Energy Scoring Tool, building on lessons learned and feedback received during the last year of nationwide program implementation. Participants on this webinar had the opportunity to engage with DOE, view a demo of the Scoring Tool, and learn about the plans for its future. Joan Glickman, Home Energy Score Program Manager, was joined by Home Energy Score Partner New Jersey

46

It's Elemental - The Element Tungsten  

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

melting point of all metallic elements and is used to make filaments for incandescent light bulbs, fluorescent light bulbs and television tubes. Tungsten expands at nearly the...

47

Crystallographic studies on enzymatic halogenation of natural products  

E-Print Network (OSTI)

Halogenated natural products are common and serve roles as hormones, pesticides, antibiotics, and anti-tumor agents. The incorporation of a halogen atom into an organic scaffold can tune the molecule's potency and selectivity, ...

Blasiak, Leah Cameron

2008-01-01T23:59:59.000Z

48

DOE Solar Decathlon: News Blog » Blog Archive » Technology Spotlight:  

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

Technology Spotlight: Structural Insulated Panels Technology Spotlight: Structural Insulated Panels Monday, September 19, 2011 Alexis Powers Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Structural insulated panels (SIPs) are prefabricated structural elements used to build walls, ceilings, floors, and roofs. Made of foam insulation sandwiched between two layers of structural board, SIPs provide a more airtight dwelling than a standard stud-frame house. This creates a quieter and more energy-efficient interior space. Various types of insulation can be used in SIPs in homes. The most common insulating material is polystyrene or polyisocyanurate foam. Foam insulation is added between two sheets of oriented strand board (an

49

Home Energy Score Past Webinars and Video Spotlights | Department of Energy  

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

Past Webinars and Video Spotlights Past Webinars and Video Spotlights Home Energy Score Past Webinars and Video Spotlights Here are past webinars and materials from Home Energy Score. July 30, 2013: Home Energy Score Program Overview for the American Gas Association U.S. DOE is getting ready to launch a new version of the Home Energy Scoring Tool, building on lessons learned and feedback received during the last year of nationwide program implementation. Participants on this webinar had the opportunity to engage with DOE, view a demo of the Scoring Tool, and learn about the plans for its future. Joan Glickman, Home Energy Score Program Manager, was joined by Home Energy Score Partner New Jersey Natural Gas, who has completed more than 2,300 scores to date. The webinar is geared specifically to natural gas utilities' interests. Download the

50

DOE Solar Decathlon: News Blog » Blog Archive » Technology Spotlight:  

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

Technology Spotlight: Solar Water Heating Technology Spotlight: Solar Water Heating Friday, September 27, 2013 By Solar Decathlon Editor's Note: This post is one of a series of technology spotlights that introduces common technologies used in U.S. Department of Energy Solar Decathlon team houses. Solar water heating systems make hot water for residential uses such as bathing, laundering, and dish washing. Generally less expensive than photovoltaic panels, these systems provide homeowners with a cost-effective way to harness the sun's energy. Photo of a wooden house with PV panels and a solar hot water system on the roof. Middlebury College's U.S. Department of Energy Solar Decathlon 211 entry, Self-Reliance, had two roof-mounted solar hot water collector arrays (right) that circulated glycol through vacuum-insulated borosilicate glass

51

Award Spotlight Could Return to EM-Developed Technology for Tracking  

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

Award Spotlight Could Return to EM-Developed Technology for Award Spotlight Could Return to EM-Developed Technology for Tracking Shipments Award Spotlight Could Return to EM-Developed Technology for Tracking Shipments August 27, 2013 - 12:00pm Addthis James Shuler, manager of DOE’s Packaging Certification Program, within EM's Office of Packaging and Transportation, discusses the radiofrequency identification technology he developed. At left is RFID Team Leader Yung Liu, with Argonne National Laboratory. James Shuler, manager of DOE's Packaging Certification Program, within EM's Office of Packaging and Transportation, discusses the radiofrequency identification technology he developed. At left is RFID Team Leader Yung Liu, with Argonne National Laboratory. The radiofrequency identification technology EM's James Shuler developed is shown here, attached to a waste shipment.

52

The City of Los Angeles Has Its Spotlight on Energy Efficiency | Department  

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

City of Los Angeles Has Its Spotlight on Energy Efficiency City of Los Angeles Has Its Spotlight on Energy Efficiency The City of Los Angeles Has Its Spotlight on Energy Efficiency July 30, 2012 - 9:19am Addthis Mayor Antonio Villaraigosa and the Founding Partners of Los Angeles Better Buildings Challenge sign commitments to reduce energy use in their buildings. | Photo courtesy of the City of Los Angeles. Mayor Antonio Villaraigosa and the Founding Partners of Los Angeles Better Buildings Challenge sign commitments to reduce energy use in their buildings. | Photo courtesy of the City of Los Angeles. John Chu John Chu Communications Specialist with the Office of Energy Efficiency and Renewable Energy What are the key facts? As part of the Better Buildings Challenge, Los Angeles pledged to improve energy efficiency in 30 million square feet of public and private.

53

ELEVATED TEMPERATURE DIFFUSION BONDING OF TUNGSTEN TO TUNGSTEN UNDER PRESSURE  

DOE Green Energy (OSTI)

Solid-state diffusion bonding of tungsten to tungsten was investigated at temperatures ranging from 1700 to 2600 nif- C, under surface contact pressures up to 3000 psi, while under high vacuum or hydrogen atmosphere. Various interface coatings were employed to promote diffusion, including graphite, oxide, metal slurries, electroplates, direct surface oxidation, and Mo - -W deposits from carbonyl decompositions. Thorough metallurgical bonding was achieved, particularly with the latter two surface coatings, after 2 hours at 2350 nif- C in H/sub 2/ under 1400 psi. Corresponding tensile strengths of 30,000 psi were obtained. Powder-compacted tungsten sheet containing 50 vo1% UO/sub 2/, spray-coated with an outer layer of tungsten, was effectively bonded to itself and to tungsten metal under 2 hour diffusion treatments at 2000 nif- C and moderate pressures of the order of 1000 psi. (auth)

Batista, R.I.; Hanks, G.S.; Murphy, D.J.

1962-08-01T23:59:59.000Z

54

Passivation of quartz for halogen-containing light sources  

SciTech Connect

Lifetime of halogen containing VUV, UV, visible or IR light sources can be extended by passivating the quartz or glass gas containers with halogens prior to filling the quartz with the halogen and rare gas mixtures used to produce the light.

Falkenstein, Zoran (Los Alamos, NM)

1999-01-01T23:59:59.000Z

55

TUNGSTEN BASE ALLOYS  

DOE Patents (OSTI)

A high-density quaternary tungsten-base alloy having high mechanical strength and good machinability composed of about 2 wt.% Ni, 3 wt.% Cu, 5 wt.% Pb, and 90wt.% W is described. This alloy can be formed by the powder metallurgy technique of hot pressing in a graphite die without causing a reaction between charge and the die and without formation of a carbide case on the final compact, thereby enabling re-use of the graphite die. The alloy is formable at hot- pressing temperatures of from about 1200 to about 1350 deg C. In addition, there is little component shrinkage, thereby eliminating the necessity of subsequent extensive surface machining.

Schell, D.H.; Sheinberg, H.

1959-12-15T23:59:59.000Z

56

High strength uranium-tungsten alloys  

SciTech Connect

Alloys of uranium and tungsten and a method for making the alloys. The amount of tungsten present in the alloys is from about 4 wt % to about 35 wt %. Tungsten particles are dispersed throughout the uranium and a small amount of tungsten is dissolved in the uranium.

Dunn, Paul S. (Santa Fe, NM); Sheinberg, Haskell (Los Alamos, NM); Hogan, Billy M. (Los Alamos, NM); Lewis, Homer D. (Bayfield, CO); Dickinson, James M. (Los Alamos, NM)

1991-01-01T23:59:59.000Z

57

High strength uranium-tungsten alloy process  

SciTech Connect

Alloys of uranium and tungsten and a method for making the alloys. The amount of tungsten present in the alloys is from about 4 wt % to about 35 wt %. Tungsten particles are dispersed throughout the uranium and a small amount of tungsten is dissolved in the uranium.

Dunn, Paul S. (Santa Fe, NM); Sheinberg, Haskell (Los Alamos, NM); Hogan, Billy M. (Los Alamos, NM); Lewis, Homer D. (Bayfield, CO); Dickinson, James M. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

58

METHOD OF MAKING TUNGSTEN FILAMENTS  

DOE Patents (OSTI)

A method of making tungsten filaments is described in which the tungsten is completely free of isotope impurities in the range of masses 234 to 245 for use in mass spectrometers. The filament comprises a tantalum core generally less than 1 mil in diameter having a coating of potassium-free tantalum-diffused tungsten molecularly bonded thereto. In the preferred process of manufacture a short, thin tantalum filament is first mounted between terminal posts mounted in insulated relation through a backing plate. The tungsten is most conveniently vapor plated onto the tantalum by a tungsten carbonyl vapor decomposition method having a critical step because of the tendency of the tantalum to volatilize at the temperature of operntion of the filament. The preferred recipe comprises volatilizing tantalum by resistance henting until the current drops by about 40%, cutting the voltage back to build up the tungsten, and then gradually building the temperature back up to balance the rate of tungsten deposition with the rate of tantalum volatilization. (AEC)

Frazer, J.W.

1962-12-18T23:59:59.000Z

59

Oxidation of hydrogen halides to elemental halogens  

DOE Patents (OSTI)

A process for oxidizing hydrogen halides having substantially no sulfur impurities by means of a catalytically active molten salt is disclosed. A mixture of the subject hydrogen halide and an oxygen bearing gas is contacted with a molten salt containing an oxidizing catalyst and alkali metal normal sulfates and pyrosulfates to produce an effluent gas stream rich in the elemental halogen and substantially free of sulfur oxide gases.

Rohrmann, Charles A. (Kennewick, WA); Fullam, Harold T. (Richland, WA)

1985-01-01T23:59:59.000Z

60

Process for removal of hydrogen halides or halogens from incinerator gas  

DOE Patents (OSTI)

A process for reducing the amount of halogens and halogen acids in high temperature combustion gases and through their removal, the formation of halogenated organics at lower temperatures, with the reduction being carried out electrochemically by contacting the combustion gas with the negative electrode of an electrochemical cell and with the halogen and/or halogen acid being recovered at the positive electrode.

Huang, Hann S. (Darien, IL); Sather, Norman F. (Naperville, IL)

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Process for removal of hydrogen halides or halogens from incinerator gas  

DOE Patents (OSTI)

A process for reducing the amount of halogens and halogen acids in high temperature combustion gas and through their removal, the formation of halogenated organics at lower temperatures, with the reduction being carried out electrochemically by contacting the combustion gas with the negative electrode of an electrochemical cell and with the halogen and/or halogen acid being recovered at the positive electrode.

Huang, H.S.; Sather, N.F.

1987-08-21T23:59:59.000Z

62

Fabrication of Tungsten, Tungsten-Rhenium and Tungsten-CeO2 ...  

Science Conference Proceedings (OSTI)

... kernels such as uranium dioxide (UO2) are encapsulated within a tungsten matrix. ... in the pre-exponential frequency factor for gas diffusion through such materials. ... Functional Composites: Fluorescent Carbon Nanotubes in Silica Aerogel.

63

Direct conversion of halogen-containing wastes to borosilicate glass  

SciTech Connect

Glass has become a preferred waste form worldwide for radioactive wastes: however, there are limitations. Halogen-containing wastes can not be converted to glass because halogens form poor-quality waste glasses. Furthermore, halides in glass melters often form second phases that create operating problems. A new waste vitrification process, the Glass Material Oxidation and dissolution System (GMODS), removes these limitations by converting halogen-containing wastes into borosilicate glass and a secondary, clean, sodium-halide stream.

Forsberg, C.W.; Beahm, E.C.; Rudolph, J.C.

1996-12-09T23:59:59.000Z

64

Halogen Free Flame Retardant for ABS Composite with Oxides ...  

Science Conference Proceedings (OSTI)

The irrevocable finality from flame retardant is fires protection to help safeguard of ... the oxides particles on obtain the ABS with halogen free flame retardant.

65

Spotlight on Rutland County, Vermont: How Local Ties Lead to Local Wins  

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

April 2011 Version 2 April 2011 Version 2 betterbuildings.energy.gov/neighborhoods Spotlight on Rutland County, Vermont: How Local Ties Lead to Local Wins Driving Demand The Better Buildings Neighborhood Program is part of the national Better Buildings Initiative led by the U.S. Department of Energy. To learn how the Better Buildings Neighborhood Program is making homes more comfortable and businesses more lucrative and to read more from this Spotlight series, visit betterbuildings.energy.gov/neighborhoods. Neighbors Excel in Spreading the Value of Energy Efficiency in Rutland, Vermont Building on their understanding of homeowners in Rutland County, Vermont, NeighborWorks of Western Vermont (NWWVT) has enlisted well-respected local citizens and organizations to spread the word about home energy efficiency

66

ELEVATED TEMPERATURE DIFFUSION BONDING OF TUNGSTEN TO TUNGSTEN UNDER PRESSURE  

DOE Green Energy (OSTI)

Solid state diffusion bonding of tungsten to tungsten was investigated at temperatures ranging from 1700 to 2600 nif- C, under surface contact pressures up to 3000 psi, while under high vacuum or hydrogen atmosphere. Various interface coatings were employed to promote diffusion, including graphite, oxide, and metai slurries, electro-plates, direct surface oxidation, and Mo-W deposits from carbonyl decompositions. Thorough metallurgical bonding was achieved, particularly with the latter two surface coatings, after 2 hours at 2350 nif- C in H/sub 2/ under 1400 psi. Corresponding tensile strengths of 30000 psi were obtained. (auth)

Batista, R.I.; Hanks, G.S.; Murphy, D.J.

1962-01-01T23:59:59.000Z

67

Method of synthesizing tungsten nanoparticles  

DOE Patents (OSTI)

A method to synthesize tungsten nanoparticles has been developed that enables synthesis of nanometer-scale, monodisperse particles that can be stabilized only by tetrahydrofuran. The method can be used at room temperature, is scalable, and the product concentrated by standard means. Since no additives or stabilizing surfactants are required, this method is particularly well suited for producing tungsten nanoparticles for dispersion in polymers. If complete dispersion is achieved due to the size of the nanoparticles, then the optical properties of the polymer can be largely maintained.

Thoma, Steven G; Anderson, Travis M

2013-02-12T23:59:59.000Z

68

Metal halogen battery construction with improved technique for producing halogen hydrate  

DOE Patents (OSTI)

An improved electrical energy storage system comprising, at least one cell having a positive electrode and a negative electrode separated by aqueous electrolyte, a store means wherein halogen hydrate is formed and stored as part of an aqueous material having a liquid level near the upper part of the store, means for circulating electrolyte through the cell, conduit means for transmitting halogen gas formed in the cell to a hydrate forming apparatus associated with the store, said hydrate forming apparatus including, a pump to which there is introduced quantities of the halogen gas and chilled water, said pump being located in the store and an outlet conduit leading from the pump and being substantially straight and generally vertically disposed and having an exit discharge into the gas space above the liquid level in the store, and wherein said hydrate forming apparatus is highly efficient and very resistant to plugging or jamming. The disclosure also relates to an improved method for producing chlorine hydrate in zinc chlorine batteries.

Fong, Walter L. (Royal Oak, MI); Catherino, Henry A. (Rochester, MI); Kotch, Richard J. (Mt. Clemens, MI)

1983-01-01T23:59:59.000Z

69

Photochemical reductive elimination of halogen from transition metal complexes  

E-Print Network (OSTI)

This thesis is focused on the synthesis and study of transition metal complexes that undergo halogen elimination when irradiated with UV and visible light. This chemistry is relevant for solar energy storage schemes in ...

Cook, Timothy R. (Timothy Raymond), 1982-

2010-01-01T23:59:59.000Z

70

Halogenated naphthyl methoxy piperidines for mapping serotonin transporter sites  

DOE Patents (OSTI)

Halogenated naphthyl methoxy piperidines having a strong affinity for the serotonin transporter are disclosed. Those compounds can be labeled with positron-emitting and/or gamma emitting halogen isotopes by a late step synthesis that maximizes the useable lifeterm of the label. The labeled compounds are useful for localizing serotonin transporter sites by positron emission tomography and/or single photon emission computed tomography.

Goodman, M.M.; Faraj, B.

1999-07-06T23:59:59.000Z

71

Treatment of halogen-containing waste and other waste materials  

DOE Patents (OSTI)

A process is described for treating a halogen-containing waste material. The process provides a bath of molten glass containing a sacrificial metal oxide capable of reacting with a halogen in the waste material. The sacrificial metal oxide is present in the molten glass in at least a stoichiometric amount with respect to the halogen in the waste material. The waste material is introduced into the bath of molten glass to cause a reaction between the halogen in the waste material and the sacrificial metal oxide to yield a metal halide. The metal halide is a gas at the temperature of the molten glass. The gaseous metal halide is separated from the molten glass and contacted with an aqueous scrubber solution of an alkali metal hydroxide to yield a metal hydroxide or metal oxide-containing precipitate and a soluble alkali metal halide. The precipitate is then separated from the aqueous scrubber solution. The molten glass containing the treated waste material is removed from the bath as a waste glass. The process of the invention can be used to treat all types of waste material including radioactive wastes. The process is particularly suited for separating halogens from halogen-containing wastes. 3 figs.

Forsberg, C.W.; Beahm, E.C.; Parker, G.W.

1997-03-18T23:59:59.000Z

72

Treatment of halogen-containing waste and other waste materials  

DOE Patents (OSTI)

A process for treating a halogen-containing waste material. The process provides a bath of molten glass containing a sacrificial metal oxide capable of reacting with a halogen in the waste material. The sacrificial metal oxide is present in the molten glass in at least a stoichiometric amount with respect to the halogen in the waste material. The waste material is introduced into the bath of molten glass to cause a reaction between the halogen in the waste material and the sacrificial metal oxide to yield a metal halide. The metal halide is a gas at the temperature of the molten glass. The gaseous metal halide is separated from the molten glass and contacted with an aqueous scrubber solution of an alkali metal hydroxide to yield a metal hydroxide or metal oxide-containing precipitate and a soluble alkali metal halide. The precipitate is then separated from the aqueous scrubber solution. The molten glass containing the treated waste material is removed from the bath as a waste glass. The process of the invention can be used to treat all types of waste material including radioactive wastes. The process is particularly suited for separating halogens from halogen-containing wastes.

Forsberg, Charles W. (Oak Ridge, TN); Beahm, Edward C. (Oak Ridge, TN); Parker, George W. (Concord, TN)

1997-01-01T23:59:59.000Z

73

Negative Halogen Ions for Fusion Applications  

DOE Green Energy (OSTI)

Over the past quarter century, advances in hydrogen negative ion sources have extended the usable range of hydrogen isotope neutral beams to energies suitable for large magnetically confined fusion devices. Recently, drawing upon this experience, negative halogen ions have been proposed as an alternative to positive ions for heavy ion fusion drivers in inertial confinement fusion, because electron accumulation would be prevented in negative ion beams, and if desired, the beams could be photo-detached to neutrals. This paper reports the results of an experiment comparing the current density and beam emittance of Cl+ and Cl- extracted from substantially ion-ion plasmas with that of Ar+ extracted from an ordinary electron-ion plasma, all using the same source, extractor, and emittance scanner. At similar discharge conditions, the Cl- current was typically 85 90% of the positive chlorine current, with an e-/ Cl- ratio as low as seven without grid magnets. The Cl- was as much as 76% of the Ar+ current from a discharge with the same RF drive. The minimum normalized beam emittance and inferred ion temperatures of Cl+, Cl-, and Ar+ were all similar, so the current density and optical quality of Cl- appear as suitable for heavy ion fusion driver applications as a positive noble gas ion of similar mass. Since F, I, and Br should all behave similarly in an ion source, they should also be suitable as driver beams.

Grisham, L.R.; Kwan, J.W.; Hahto, S.K.; Hahto, S.T.; Leung, K.N.; Westenskow, G.

2006-01-01T23:59:59.000Z

74

Photodissociation Dynamics of Halogen Oxide Species  

E-Print Network (OSTI)

The focus of this dissertation is the study of the photodissociation dynamics of halogen oxide species (XO, X = Cl, Br, I). These radical species are known to be important in stratospheric and tropospheric ozone depletion cycles. They are also useful benchmark systems for the comparison to current theoretical methods where they provide insight into the dynamics occurring beyond the Franck-Condon region. These systems are studied using velocity map ion imaging, a technique that measures velocity and angular information simultaneously. Photofragment species are state-selectively ionized for detection using 2+1 REMPI (Resonance Enhanced Multi-Photon Ionization). The instrumentation employs a molecular beam of the XO radicals formed using pyrolitic and photolytic methods. The current work involves the measurement of fundamental physical constants of the XO species. The bond dissociation energy of IO is measured. Vibrational level dependent correlated final state branching ratios of the predissociation of the A(^2 II_3/2) state of ClO and BrO are reported, and comparison to theoretical methods is discussed.

Dooley, Kristin S.

2009-05-01T23:59:59.000Z

75

ORNL, Industry Collaboration Puts Spotlight on Solar T DOING BUSINESS WITH ORNL  

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

Industry Collaboration Industry Collaboration Puts Spotlight on Solar T DOING BUSINESS WITH ORNL PREPARING FOR THE FUTURE The ORNL Partnerships Directorate seeks to foster economic development and the growth of business and industry by mak- ing available the most innovative equipment, the latest technol- ogy, and the expertise of ORNL researchers to technology-based companies and research universities throughout the nation. F our manu- facturers of solar energy components are working with Oak Ridge National Labo- ratory to address some of their biggest challenges. Through individual cooperative research and development agreements (CRADAs), the companies hope to advance solar cell materials and processing technologies. The $880,000 effort is funded by the American Recovery and Reinvestment

76

Better Buildings: Financing and Incentives: Spotlight on Michigan: Experiment to Find the Right Mix of Incentives  

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

betterbuildings.energy.gov/neighborhoods betterbuildings.energy.gov/neighborhoods 1 Spotlight on Michigan: Experiment to Find the Right Mix of Incentives With support from the U.S. Energy Department's Better Buildings Neighborhood Program, a diverse coalition of partners under the banner of BetterBuildings for Michigan designed 27 neighborhood "sweeps" across the state. These targeted outreach campaigns applied varying incentives and outreach strategies to designated neighbor- hoods with a goal to understand which incentives and strategies work best in the target communities. In the earliest sweeps, program staff focused on maximizing the number of participants receiving a diagnostic energy assessment and some energy efficiency measures, called the program's "base package." Program staff

77

Halogenated 1'-methyl-1,2'-bipyrroles (MBPs) in the Norwestern Atlantic  

E-Print Network (OSTI)

Halogenated 1'-methyl-1,2'-bipyrroles (MBPs) are a distinctive class of marine organic compounds. They are naturally produced, they have a unique carbon structure, they are highly halogenated, and they bioaccumulate in ...

Pangallo, Kristin C

2009-01-01T23:59:59.000Z

78

Symmetric and asymmetric halogen-containing metallocarboranylporphyrins and uses thereof  

DOE Patents (OSTI)

The present invention is directed to low toxicity boronated compounds and methods for their use in the treatment, visualization, and diagnosis of tumors. More specifically, the present invention is directed to low toxicity halogenated, carborane-containing 5,10,15,20-tetraphenylporphyrin compounds and methods for their use particularly in boron neutron capture therapy (BNCT) and photodynamic therapy (PDT) for the treatment of tumors of the brain, head and neck, and surrounding tissue. The invention is also directed to using these halogenated, carborane-containing tetraphenylporphyrin compounds in methods of tumor imaging and/or diagnosis such as MRI, SPECT, or PET.

Miura, Michiko; Wu, Haitao

2013-05-21T23:59:59.000Z

79

High strength and density tungsten-uranium alloys  

DOE Patents (OSTI)

Alloys of tungsten and uranium and a method for making the alloys. The amount of tungsten present in the alloys is from about 55 vol % to about 85 vol %. A porous preform is made by sintering consolidated tungsten powder. The preform is impregnated with molten uranium such that (1) uranium fills the pores of the preform to form uranium in a tungsten matrix or (2) uranium dissolves portions of the preform to form a continuous uranium phase containing tungsten particles.

Sheinberg, Haskell (Los Alamos, NM)

1993-01-01T23:59:59.000Z

80

Tungsten Cladding of Tungsten-Uranium Dioxide (W-UO2) Composites by Deposition from Tungsten Hexafluoride (WF6)  

DOE Green Energy (OSTI)

?A program is being conducted to develop a process for cladding tungsten and tungsten cermet fuels with tungsten deposited from the vapor state by the hydrogen reduction of tungsten hexafluoride. Early work was performed using recrystallized, high purity, commercial tungsten as the substrate material. Temperatures in the range 660 to 12950F (350 to 1700C) and pressures from 10 to 350 mm Hg were investigated. Hydrogen to WF 6 ratios of 10: 1 to 150: 1 were utilized. Efforts were directed toward optimizing deposition process parameters to attain control of qualities such as coating thickness, uniformity, density, impurity content, and surface quality. Substrate penetration methods have been investigated in the interest of completely eliminating the interface between the fueled substrate and cladding. In addition, the effects of process parameters and post-cladding heat treatments on the fuel retention properties of clad composites at 4500 degrees F (2480 degrees C) in hydrogen for 2 hours have been evaluated. As a result of work performed during the first phase of the program it has been shown that the rate of deposition of tungsten from WF 6 and the uniformity of the deposit can be varied in a predictable and reproducible manner by exercising control over the temperature, pressure, and gas flow rates at which the deposits are produced. A significant result of the study is the discovery that substrate nucleation and epitaxial growth in deposits made on both unfueled tungsten and fueled substrates may be effected by pretreating the substrates in hydrogen. High temperature fuel retention testing of tungsten clad W-U02 at 45000F (2480 degrees C) in hydrogen for 2 hours has demonstrated that the vapor deposited layer effectively and consistently restricts fuel loss.

Lamartine, J.T.; Hoppe, A.W.

1965-02-15T23:59:59.000Z

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


81

Process for oxidation of hydrogen halides to elemental halogens  

DOE Patents (OSTI)

An improved process for generating an elemental halogen selected from chlorine, bromine or iodine, from a corresponding hydrogen halide by absorbing a molten salt mixture, which includes sulfur, alkali metals and oxygen with a sulfur to metal molar ratio between 0.9 and 1.1 and includes a dissolved oxygen compound capable of reacting with hydrogen halide to produce elemental halogen, into a porous, relatively inert substrate to produce a substrate-supported salt mixture. Thereafter, the substrate-supported salt mixture is contacted (stage 1) with a hydrogen halide while maintaining the substrate-supported salt mixture during the contacting at an elevated temperature sufficient to sustain a reaction between the oxygen compound and the hydrogen halide to produce a gaseous elemental halogen product. This is followed by purging the substrate-supported salt mixture with steam (stage 2) thereby recovering any unreacted hydrogen halide and additional elemental halogen for recycle to stage 1. The dissolved oxygen compound is regenerated in a high temperature (stage 3) and an optical intermediate temperature stage (stage 4) by contacting the substrate-supported salt mixture with a gas containing oxygen whereby the dissolved oxygen compound in the substrate-supported salt mixture is regenerated by being oxidized to a higher valence state.

Lyke, Stephen E. (Middleton, WI)

1992-01-01T23:59:59.000Z

82

Tungsten Mountain Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Tungsten Mountain Geothermal Area Tungsten Mountain Geothermal Area Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Tungsten Mountain Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (4) 9 Exploration Activities (4) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.6751,"lon":-117.6945,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

83

Halogenated high {Tc} superconductors and method of preparation  

DOE Patents (OSTI)

Disclosed is a method for producing a superconductor of the R-Ba-Cu-O system which comprises of selecting an insulating material of the formula RBa{sub x}Cu{sub y}O{sub z} where R is selected from the group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Ho, Er, Tm, and Lu, and where x ranges from about 1.7 to about 2.3, y ranges from about 2.7 to about 3.3 and z ranges from about 5.0 to about 6.99, and halogenating said material with a halogen selected from the group consisting of chlorine, bromine, iodine, and mixtures thereof, while maintaining said material at a temperature ranging from about 160 to about 440{degrees}C, for a period of time sufficient to cause incorporation of said halogen into said material. Also, disclosed are the materials produced by the method and articles of manufacture incorporating said materials as electronic circuitry components.

Radousky, H.B.; Glass, R.S.; Fluss, M.J.

1990-11-14T23:59:59.000Z

84

Tungsten Mountain Geothermal Area | Open Energy Information  

Open Energy Info (EERE)

Tungsten Mountain Geothermal Area Tungsten Mountain Geothermal Area (Redirected from Tungsten Mountain Area) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermal Resource Area: Tungsten Mountain Geothermal Area Contents 1 Area Overview 2 History and Infrastructure 3 Regulatory and Environmental Issues 4 Exploration History 5 Well Field Description 6 Geology of the Area 7 Geofluid Geochemistry 8 NEPA-Related Analyses (4) 9 Exploration Activities (4) 10 References Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"TERRAIN","zoom":6,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"500px","height":"300px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.6751,"lon":-117.6945,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

85

Joining of Tungsten Armor Using Functional Gradients  

SciTech Connect

The joining of low thermal expansion armor materials such as tungsten to high thermal expansion heat sink materials has been a major problem in plasma facing component (PFC) development. Conventional planar bonding techniques have been unable to withstand the high thermal induced stresses resulting from fabrication and high heat flux testing. During this investigation, innovative functional gradient joints produced using vacuum plasma spray forming techniques have been developed for joining tungsten armor to copper alloy heat sinks. A model was developed to select the optimum gradient architecture. Based on the modeling effort, a 2mm copper rich gradient was selected. Vacuum plasma pray parameters and procedures were then developed to produce the functional gradient joint. Using these techniques, dual cooling channel, medium scale mockups (32mm wide x 400mm length) were produced with vacuum plasma spray formed tungsten armor. The thickness of the tungsten armor was up to 5mm thick. No evidence of debonding at the interface between the heat sink and the vacuum plasma sprayed material was observed.

John Scott O'Dell

2006-12-31T23:59:59.000Z

86

Gas tungsten arc welder with electrode grinder  

DOE Patents (OSTI)

A welder for automated closure of fuel pins by a gas tungsten arc process in which a rotating length of cladding is positioned adjacent a welding electrode in a sealed enclosure. An independently movable axial grinder is provided in the enclosure for refurbishing the used electrode between welds.

Christiansen, David W. (Kennewick, WA); Brown, William F. (West Richland, WA)

1984-01-01T23:59:59.000Z

87

Catalytic ionic hydrogenation of ketones using tungsten or molybdenum organometallic species  

DOE Green Energy (OSTI)

The present invention is a process for the catalytic hydrogenation of ketones and aldehydes to alcohols at low temperatures and pressures using organometallic molybdenum and tungsten complexes. The functional group is selected from groups represented by the formulas R(C.dbd.O)R' and R(C.dbd.O)H, wherein R and R' are selected from hydrogen or any alkyl or aryl group. The active catalyst for the process has the form: [CpM(CO).sub.2 (PR*.sub.3) L].sup.+ A.sup.-, where Cp=.eta..sup.5 -R.sup..tangle-solidup..sub.m C.sub.5 H.sub.5-m and R.sup..tangle-solidup. represents an alkyl group or a halogen (F, Cl, Br, I) or R.sup..tangle-solidup. =OR' (where R'=H, an alkyl group or an aryl group) or R.sup..tangle-solidup. =CO.sub.2 R' (where R'=H, an alkyl group or an aryl group) and m=0 to 5; M represents a molybdenum atom or a tungsten atom; R*.sub.3 represents three hydrocarbon groups selected from a cyclohexyl group (C.sub.6 H.sub.11), a methyl group (CH.sub.3), and a phenyl group (C.sub.6 H.sub.5) and all three R* groups can be the same or different or two of the three groups can be the same; L represents a ligand; and A.sup.- represents an anion. In another embodiment, one, two or three of the R* groups can be an OR*.

Voges, Mark (Leverkusen, DE); Bullock, R. Morris (Wading River, NY)

2000-01-01T23:59:59.000Z

88

Preliminary assessment of halogenated alkanes as vapor-phase tracers  

DOE Green Energy (OSTI)

New tracers are needed to evaluate the efficiency of injection strategies in vapor-dominated environments. One group of compounds that seems to meet the requirements for vapor-phase tracing are the halogenated alkanes (HCFCs). HCFCs are generally nontoxic, and extrapolation of tabulated thermodynamic data indicate that they will be thermally stable and nonreactive in a geothermal environment. The solubilities and stabilities of these compounds, which form several homologous series, vary according to the substituent ratios of fluorine, chlorine, and hydrogen. Laboratory and field tests that will further define the suitability of HCFCs as vapor-phase tracers are under way.

Adams, Michael C.; Moore, Joseph N.; Hirtz, Paul

1991-01-01T23:59:59.000Z

89

Zinc halogen battery electrolyte composition with lead additive  

SciTech Connect

This disclosure relates to a zinc halogen battery electrolyte composition containing an additive providing improved zinc-on-zinc recyclability. The improved electrolyte composition involves the use of a lead additive to inhibit undesirable irregular plating and reduce nodular or dendritic growth on the electrode surface. The lead-containing electrolyte composition of the present invention appears to influence not only the morphology of the base plate zinc, but also the morphology of the zinc-on-zinc replate. In addition, such lead-containing electrolyte compositions appear to reduce hydrogen formation.

Henriksen, Gary L. (Troy, MI)

1981-01-01T23:59:59.000Z

90

Investigations into the Nature of Halogen Bonding Including Symmetry Adapted Perturbation Theory Analyses  

Science Conference Proceedings (OSTI)

In recent years it has been recognized that, because of their unique properties, halogen bonds have tremendous potential in the development of new pharmaceutical compounds and materials. In this study we investigate the phenomenon of halogen bonding by carrying out ab initio calculations on the halomethane-formaldehyde complexes as well as the fluorine substituted FnH?-nCX---OCH? dimers, where the halogen bonding halogens (X) are chlorine, bromine, and iodine. Coupled cluster (CCSD(T)/aug-cc-pVTZ) calculations indicate that the binding energies for these type of interactions lie in the range between -1.05 kcal/mol (H?CCl---OCH?) and -3.72 kcal/mol (F?CI---OCH?). One of the most important findings in this study is that, according to symmetry adapted perturbation theory (SAPT) analyses, halogen bonds are largely dependent on both electrostatic and dispersion type interactions. As the halogen atom involved in halogen bonding becomes larger the interaction strength for this type of interaction also gets larger and, interestingly, more electrostatic (and less dispersive) in character. Halogen bonding interactions also become stronger and more electrostatic upon substitution of (the very electronegative) fluorines onto the halomethane molecule.

Riley, Kevin E.; Hobza, Pavel

2008-01-12T23:59:59.000Z

91

Bend ductility of tungsten heavy alloys  

SciTech Connect

A bend ductility test is used to indicate the formability of tungsten heavy alloys sheet. The primary test bends a notchless Charpy impact specimen to a bend angle of approximately 100C. This can be augmented by a bend-completion test. Finite element modeling as well as strain-gaged bend specimens elucidate the strain distribution in the specimen as a function of material thickness and bend angle. The bend ductilities of 70%W, 807.W and 90%W alloys are characterized. As expected, decreasing thickness or tungsten content enhances bend ductility. Oxidation is not detrimental; therefore, controlled atmosphere is not required for cooling. The potentially detrimental effects of mechanical working (e.g., rolling, roller-leveling, grit blasting, and peening) and machining (e.g., cutting and sanding) are illustrated.

Gurwell, W.E.; Garnich, M.R.; Dudder, G.B.; Lavender, C.A.

1992-11-01T23:59:59.000Z

92

Injection Molding of Tungsten Powder Treated by Jet Mill  

Science Conference Proceedings (OSTI)

Tungsten powder was firstly treated by jet mill, resulting in the improvement of ... and Welding Conditions of Monopile and Transition for Offshore Wind Plant.

93

High in Sodium: Highly Charged Tungsten Ions May Diagnose ...  

Science Conference Proceedings (OSTI)

... D spectral lines, but they are at far higher energy levels than ... like tungsten, confirming theoretical predictions of their energies and intensities. ...

2010-12-29T23:59:59.000Z

94

Tungsten-Rhenium Super Alloy Development for Ultra High ...  

Science Conference Proceedings (OSTI)

Presentation Title, Tungsten-Rhenium Super Alloy Development for Ultra High Temperature Space Fission and Fusion Reactors. Author(s), Jonathan Webb,...

95

Better Buildings - Spotlight on Portland, Oregon; Financing and Incetntives: Use Incentives to Get Attention and Encourage Deep Savings  

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

betterbuildings.energy.gov/neighborhoods 1 June 2012 Financing and Incentives Spotlight on Portland, Oregon: Use Incentives to Get Attention and Encourage Deep Savings Key Takeaways ■■ Use performance-based incentives to nudge customers toward greater energy savings ■■ Promote recurring, limited- time bonus rebates to grab customers' attention, even when reducing incentive levels ■■ Approve financing early and make it an integral part of the program to reduce barriers to customer participation C i i r p l e m B t o i t f m c The Better Buildings Neighborhood Program is a U.S. Energy Department program that is improving lives and communities across the country through energy efficiency. To learn how the Better Buildings Neighborhood

96

Dynamic compaction of tungsten carbide powder.  

Science Conference Proceedings (OSTI)

The shock compaction behavior of a tungsten carbide powder was investigated using a new experimental design for gas-gun experiments. This design allows the Hugoniot properties to be measured with reasonably good accuracy despite the inherent difficulties involved with distended powders. The experiments also provide the first reshock state for the compacted powder. Experiments were conducted at impact velocities of 245, 500, and 711 m/s. A steady shock wave was observed for some of the sample thicknesses, but the remainder were attenuated due to release from the back of the impactor or the edge of the sample. The shock velocity for the powder was found to be quite low, and the propagating shock waves were seen to be very dispersive. The Hugoniot density for the 711 m/s experiment was close to ambient crystal density for tungsten carbide, indicating nearly complete compaction. When compared with quasi-static compaction results for the same material, the dynamic compaction data is seen to be significantly stiffer for the regime over which they overlap. Based on these initial results, recommendations are made for improving the experimental technique and for future work to improve our understanding of powder compaction.

Gluth, Jeffrey Weston; Hall, Clint Allen; Vogler, Tracy John; Grady, Dennis Edward

2005-04-01T23:59:59.000Z

97

It's Elemental - Isotopes of the Element Tungsten  

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

Tantalum Tantalum Previous Element (Tantalum) The Periodic Table of Elements Next Element (Rhenium) Rhenium Isotopes of the Element Tungsten [Click for Main Data] Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information. Naturally Occurring Isotopes Mass Number Natural Abundance Half-life 180 0.12% >= 6.6×10+17 years 182 26.50% STABLE 183 14.31% > 1.3×10+19 years 184 30.64% STABLE 186 28.43% > 2.3×10+19 years Known Isotopes Mass Number Half-life Decay Mode Branching Percentage 157 275 milliseconds Electron Capture No Data Available 158 1.25 milliseconds Alpha Decay 100.00% 158m 0.143 milliseconds Isomeric Transition No Data Available Alpha Decay No Data Available 159 7.3 milliseconds Alpha Decay ~ 99.90%

98

Tungsten Mtn Geothermal Project | Open Energy Information  

Open Energy Info (EERE)

Mtn Geothermal Project Mtn Geothermal Project Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Development Project: Tungsten Mtn Geothermal Project Project Location Information Coordinates 39.723055555556°, -118.08027777778° 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":39.723055555556,"lon":-118.08027777778,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

99

Ambient pressure synthesis of nanostructured tungsten oxide crystalline films  

Science Conference Proceedings (OSTI)

We report the results of the ambient pressure synthesis of tungsten oxide nanowires and nanoparticles on AlN substrates using the hot filament CVD techniques. The morphologic surface, crystallographic structures, chemical compositions, and bond structures ...

H. X. Zhang; B. Q. Yang; P. X. Feng

2008-01-01T23:59:59.000Z

100

Study on Visible Light Photocatalytic Performance of Nano Tungsten ...  

Science Conference Proceedings (OSTI)

... is a new environment for energy technology, it has low energy consumption, ... Tungsten trioxide thin films are widely used in electrochromic, solar energy ... of Rolled AZ31 Magnesium under Quasi-Static and High Rate Loading .... Step-

Note: This page contains sample records for the topic "tungsten halogen spotlights" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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101

Tungsten carbide-cobalt by Three Dimensional Printing  

E-Print Network (OSTI)

Three Dimensional Printing is an additive manufacturing process for rapid prototyping ceramic and metallic parts [Sachs, et al, 1990]. Green (not sintered) tungsten carbide-cobalt parts must have a density greater than 50% ...

Kelley, Andrew, III

1998-01-01T23:59:59.000Z

102

Characterization of the impurities in tungsten/silicon-germanium contacts  

DOE Green Energy (OSTI)

Secondary ion mass spectrometry and Auger electron spectrometry depth profiling were used to determine impurity distributions in sputter deposited tungsten films over N-type and P-type 80/20 silicon-germanium elements of thermoelectric devices. These analyses showed that silicon, oxygen, sodium, boron, and phosphorous were present as impurities in the tungsten film. All these impurities except oxygen and sodium came from the substrate. Oxygen was gettered by the tungsten films, while sodium was possibly the result of sample handling. Further, the results from this study indicate that an oxide build-up, primarily at the tungsten/silicon-germanium interface of the N-type materials, is the major contributor to contact resistance in thermoelectric devices.

Gregg, H.A. Sr.

1986-03-26T23:59:59.000Z

103

Analysis of Halogen-Mercury Reactions in Flue Gas  

SciTech Connect

Oxidized mercury species may be formed in combustion systems through gas-phase reactions between elemental mercury and halogens, such as chorine or bromine. This study examines how bromine species affect mercury oxidation in the gas phase and examines the effects of mixtures of bromine and chlorine on extents of oxidation. Experiments were conducted in a bench-scale, laminar flow, methane-fired (300 W), quartz-lined reactor in which gas composition (HCl, HBr, NO{sub x}, SO{sub 2}) and temperature profile were varied. In the experiments, the post-combustion gases were quenched from flame temperatures to about 350 C, and then speciated mercury was measured using a wet conditioning system and continuous emissions monitor (CEM). Supporting kinetic calculations were performed and compared with measured levels of oxidation. A significant portion of this report is devoted to sample conditioning as part of the mercury analysis system. In combustion systems with significant amounts of Br{sub 2} in the flue gas, the impinger solutions used to speciate mercury may be biased and care must be taken in interpreting mercury oxidation results. The stannous chloride solution used in the CEM conditioning system to convert all mercury to total mercury did not provide complete conversion of oxidized mercury to elemental, when bromine was added to the combustion system, resulting in a low bias for the total mercury measurement. The use of a hydroxylamine hydrochloride and sodium hydroxide solution instead of stannous chloride showed a significant improvement in the measurement of total mercury. Bromine was shown to be much more effective in the post-flame, homogeneous oxidation of mercury than chlorine, on an equivalent molar basis. Addition of NO to the flame (up to 400 ppmv) had no impact on mercury oxidation by chlorine or bromine. Addition of SO{sub 2} had no effect on mercury oxidation by chlorine at SO{sub 2} concentrations below about 400 ppmv; some increase in mercury oxidation was observed at SO{sub 2} concentrations of 400 ppmv and higher. In contrast, SO{sub 2} concentrations as low as 50 ppmv significantly reduced mercury oxidation by bromine, this reduction could be due to both gas and liquid phase interactions between SO{sub 2} and oxidized mercury species. The simultaneous presence of chlorine and bromine in the flue gas resulted in a slight increase in mercury oxidation above that obtained with bromine alone, the extent of the observed increase is proportional to the chlorine concentration. The results of this study can be used to understand the relative importance of gas-phase mercury oxidation by bromine and chlorine in combustion systems. Two temperature profiles were tested: a low quench (210 K/s) and a high quench (440 K/s). For chlorine the effects of quench rate were slight and hard to characterize with confidence. Oxidation with bromine proved sensitive to quench rate with significantly more oxidation at the lower rate. The data generated in this program are the first homogeneous laboratory-scale data on bromine-induced oxidation of mercury in a combustion system. Five Hg-Cl and three Hg-Br mechanisms, some published and others under development, were evaluated and compared to the new data. The Hg-halogen mechanisms were combined with submechanisms from Reaction Engineering International for NO{sub x}, SO{sub x}, and hydrocarbons. The homogeneous kinetics under-predicted the levels of mercury oxidation observed in full-scale systems. This shortcoming can be corrected by including heterogeneous kinetics in the model calculations.

Paula Buitrago; Geoffrey Silcox; Constance Senior; Brydger Van Otten

2010-01-01T23:59:59.000Z

104

Process for removing halogenated aliphatic and aromatic compounds from petroleum products  

DOE Patents (OSTI)

A process for removing halogenated aliphatic and aromatic compounds, e.g., polychlorinated biphenyls, from petroleum products by solvent extraction. The halogenated aliphatic and aromatic compounds are extracted from a petroleum product into a polar solvent by contacting the petroleum product with the polar solvent. The polar solvent is characterized by a high solubility for the extracted halogenated aliphatic and aromatic compounds, a low solubility for the petroleum product and considerable solvent power for polyhydroxy compound. The preferred polar solvent is dimethylformamide. A miscible compound, such as, water or a polyhydroxy compound, is added to the polar extraction solvent to increase the polarity of the polar extraction solvent. The halogenated aliphatic and aromatic compounds are extracted from the highly-polarized mixture of water or polyhydroxy compound and polar extraction solvent into a low polar or nonpolar solvent by contacting the water or polyhydroxy compound-polar solvent mixture with the low polar or nonpolar solvent. The halogenated aliphatic and aromatic compounds and the low polar or nonpolar solvent are separated by physical means, e.g., vacuum evaporation. The polar and nonpolar solvents are recovered from recycling. The process can easily be designed for continuous operation. Advantages of the process include that the polar solvent and a major portion of the nonpolar solvent can be recycled, the petroleum products are reclaimable and the cost for disposing of waste containing polychlorinated biphenyls is significantly reduced.

Googin, John M. (Oak Ridge, TN); Napier, John M. (Oak Ridge, TN); Travaglini, Michael A. (Oliver Springs, TN)

1983-01-01T23:59:59.000Z

105

Process for removing halogenated aliphatic and aromatic compounds from petroleum products  

DOE Patents (OSTI)

A process is described for removing halogenated aliphatic and aromatic compounds, e.g., polychlorinated biphenyls, from petroleum products by solvent extraction. The halogenated aliphatic and aromatic compounds are extracted from a petroleum product into a polar solvent by contacting the petroleum product with the polar solvent. The polar solvent is characterized by a high solubility for the extracted halogenated aliphatic and aromatic compounds, a low solubility for the petroleum product and considerable solvent power for polyhydroxy compound. The preferred polar solvent is dimethylformamide. A miscible compound, such as, water or a polyhydroxy compound, is added to the polar extraction solvent to increase the polarity of the polar extraction solvent. The halogenated aliphatic and aromatic compounds are extracted from the highly-polarized mixture of water or polyhydroxy compound and polar extraction solvent into a low polar or nonpolar solvent by contacting the water or polyhydroxy compound-polar solvent mixture with the low polar or nonpolar solvent. The halogenated aliphatic and aromatic compounds and the low polar or nonpolar solvent are separated by physical means, e.g., vacuum evaporation. The polar and nonpolar solvents are recovered from recycling. The process can easily be designed for continuous operation. Advantages of the process include that the polar solvent and a major portion of the nonpolar solvent can be recycled, the petroleum products are reclaimable and the cost for disposing of waste containing polychlorinated biphenyls is significantly reduced. 1 fig.

Googin, J.M.; Napier, J.M.; Travaglini, M.A.

1983-09-20T23:59:59.000Z

106

Field Evaluation of a Novel Sorbent Trap Method for Measuring Metal and Halogen Emissions  

Science Conference Proceedings (OSTI)

Owners of fossil fuel-fired power plants face the challenge of measuring stack emissions of trace metals and acid gases at much lower levels than in the past as a result of increasingly stringent regulations. In the United States, the current reference methods for trace metals and halogens are wet-chemistry methods, U.S. Environmental Protection Agency (EPA) Method 29 for trace metals and 26 and 26A for halogens. As a possible alternative to the EPA methods, the Energy and Environmental Research ...

2013-12-04T23:59:59.000Z

107

Molecular dynamics simulation of deuterium trapping and bubble formation in tungsten  

E-Print Network (OSTI)

Molecular dynamics simulation of deuterium trapping and bubble formation in tungsten Xue Yang using classical molecular dynamic methods. " Low energy deuterium atoms tend to affix to high environment. The deuterium bombardment of monocrystalline tungsten was modeled by molecular dynamics

Harilal, S. S.

108

CRITICAL FIELD FOR SUPERCONDUCTIVITY AND LOW-TEMPERATURE NORMAL-STATE HEAT CAPACITY OF TUNGSTEN  

E-Print Network (OSTI)

LOW-TEMPERATURE NORMAL-STATE HEAT CAPACITY OF TUNGSTEN B. B.Temperature Nonnal-State Heat Capacity of Tungsten* B. n.single crystal This work, heat capacity 57,000a 4 d' 1&11.

Triplett, B.B.

2008-01-01T23:59:59.000Z

109

GREEN LIVING Replace incandencent and halogen light bulbs with LED and CLFs  

E-Print Network (OSTI)

GREEN LIVING GUIDE ENERGY TRAVEL FOOD sustain yosef WATER Replace incandencent and halogen light bulbs with LED and CLFs TURN YOUR COMPUTER OFF! Any time you will be gone for an hour or more for your laundry RESIST THAT SWITCH! Use natural light during the day, and no lights when you are gone USE

Thaxton, Christopher S.

110

Spectroscopy Of Highly Charged Tungsten Relevant To Fusion Plasmas  

Science Conference Proceedings (OSTI)

The radiation emitted from highly charged tungsten ions has been measured at the Berlin Electron Beam Ion trap using high-resolution x-ray and EUV spectrometers. Highly charged tungsten ions ranging from Pm-like W{sup 13+} to N-like W{sup 67+} have been produced and excited in EBIT. The line emission originating from electric and magnetic dipole transitions is studied in a wide wavelength range from 0.12 to 80 nm. The results of our measurements are compared with predicted transition wavelengths from atomic structure calculations and observations at the ASDEX Upgrade tokamak. Here we focus on the quasi-continuum emission around 5 nm from tungsten ions with an open 4 d shell (In-like W{sup 25+} to Rb-like W{sup 37+}) and the L-shell spectra of ions with configurations close to Ne-like one.

Biedermann, C.; Radtke, R. [Institut fuer Physik der Humboldt-Universitaet zu Berlin, Lehrstuhl Plasmaphysik, Newtonstr 15, 12489 Berlin (Germany) and Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, 17491 Greifswald (Germany)

2009-05-02T23:59:59.000Z

111

Ductile tungsten-nickel alloy and method for making same  

DOE Patents (OSTI)

The present invention is directed to a ductile, high-density tungsten-nickel alloy which possesses a tensile strength in the range of 100,000 to 140,000 psi and a tensile elongation of 3.1 to 16.5 percent in 1 inch at 25.degree.C. This alloy is prepared by the steps of liquid phase sintering a mixture of tungsten-0.5 to 10.0 weight percent nickel, heat treating the alloy at a temperature above the ordering temperature of approximately 970.degree.C. to stabilize the matrix phase, and thereafter rapidly quenching the alloy in a suitable liquid to maintain the matrix phase in a metastable, face-centered cubic, solid- solution of tungsten in nickel.

Snyder, Jr., William B. (Knoxville, TN)

1976-01-01T23:59:59.000Z

112

Formation of tungsten coatings by gas tunnel type plasma spraying Akira Kobayashia,*, Shahram Sharafatb  

E-Print Network (OSTI)

silicon carbide (SiC) substrate coated with tungsten. Although chemical vapor deposition (CVD) is being method for coating preparation. Another example application is the tungsten-plasma spray- ing coated SiC-fiber (foam) for high heat-resistance. It is helpful to enhance the SiC-fiber heat-resistance that tungsten

Ghoniem, Nasr M.

113

FABRICATION OF GAS-FILLED TUNGSTEN-COATED GLASS SHELLS  

SciTech Connect

OAK-B135 Deuterium (D{sub 2}) filled glass shells coated with a high Z element are needed for high energy density (HED) experiments by researchers at Los Alamos National Laboratory. They report here on our initial attempt to produce such shells. Glass shells made using the drop tower technique were coated with gold, palladium or tungsten, or a mixture of two of these elements. It was found that gold and palladium coatings did not stick well to the glass and resulted in poor or delaminated films. Tungsten coatings resulted in films suitable for these targets. Bouncing of shells during coating resulted in uniform tungsten coatings, but the surface of such coatings were filled with small nodules. Proper agitation of shells using a tapping technique resulted in smooth films with minimal particulate contamination. For coating rates of {approx} 0.15 {micro}m/hr coatings with {approx} 2 nm RMS surface finish could be deposited. The surface roughness of coatings at higher rates, 0.7 {micro}m/hr, was considerably worse ({approx} 100 nm RMS). The columnar structure of the coatings allowed permeation filling of the tungsten coated glass shells with deuterium at 300 C.

NIKROO,A; BAUGH,W; STEINMAN,D.A

2003-06-01T23:59:59.000Z

114

MEISPP Internship Spotlight  

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

July 8, 2008, DOE interns embarked on a scenic July 8, 2008, DOE interns embarked on a scenic trip to Morgantown, West Virginia, to tour the National Energy Technology Laboratory (NETL). As we boarded the bus early in the morning to begin our journey, the buzz of interns filled the air. What might we see at this National Laboratory? Would we stumble onto anything top secret? How on earth did we all manage to make it to Forrestal by seven o'clock in the morning? The ride took us down the road and through the mountains all the way to Morgantown, West Virginia. The trip also offered ample opportunities for MEISPP and the Office of Human Capital interns to get to know one another better. 1000 Independence Ave., S.W. Rm. 5B-110 Washington, DC 20585 Phone: 202-586-8383 Fax: 202-586-3075

115

DEP - Spotlight Archive  

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

Summer Institute on Sustainability and Energy Summer Institute on Sustainability and Energy The Summer Institute on Sustainability and Energy (SISE) is a two-week intensive workshop and lecture series geared towards individuals interested in the title subjects: sustainability and energy. From August 5-16, a diverse body of participants will converge on the UIC campus and immerse itself in a broad spectrum of sustainability and energy related topics. Issues presented will be of interest to scientists, economists, political scientists, urban planners, engineers, architects, and entrepreneurs. Participants will engage these issues through interactive and interdisciplinary lectures and panel discussions, collaborative research projects that stress scientific innovation and entrepreneurship, networking opportunities with academics and professionals, and tours of sustainability and energy related sites in the Chicago area. This experience leaves graduates of the Summer Institute with a firm foundation for future careers in sustainability and energy, and inspires them to lead the next generation as thoughtful and informed global citizens. For 2013, SISE will look at sustainability and energy through the lens of transportation.

116

Molecules in the Spotlight  

SciTech Connect

SLAC has just unveiled the world's first X-ray laser, the LCLS. This machine produces pulses of X-rays that are ten billion times brighter than those from conventional sources. One of the goals of this machine is to make movies of chemical reactions, including reactions necessary for life and reactions that might power new energy technologies. This public lecture will show the first results from the LCLS. As a first target, we have chosen nitrogen gas, the main component of the air we breathe. Using the unprecedented power of the LCLS X-rays as a blasting torch, we have created new forms of this molecule and with unique electronic arrangements. Please share with us the first insights from this new technology.

Cryan, James

2010-01-26T23:59:59.000Z

117

Oxidation of hydrogen halides to elemental halogens with catalytic molten salt mixtures  

DOE Patents (OSTI)

A process for oxidizing hydrogen halides by means of a catalytically active molten salt is disclosed. The subject hydrogen halide is contacted with a molten salt containing an oxygen compound of vanadium and alkali metal sulfates and pyrosulfates to produce an effluent gas stream rich in the elemental halogen. The reduced vanadium which remains after this contacting is regenerated to the active higher valence state by contacting the spent molten salt with a stream of oxygen-bearing gas.

Rohrmann, Charles A. (Kennewick, WA)

1978-01-01T23:59:59.000Z

118

Pitfalls of tungsten multileaf collimator in proton beam therapy  

Science Conference Proceedings (OSTI)

Purpose: Particle beam therapy is associated with significant startup and operational cost. Multileaf collimator (MLC) provides an attractive option to improve the efficiency and reduce the treatment cost. A direct transfer of the MLC technology from external beam radiation therapy is intuitively straightforward to proton therapy. However, activation, neutron production, and the associated secondary cancer risk in proton beam should be an important consideration which is evaluated. Methods: Monte Carlo simulation with FLUKA particle transport code was applied in this study for a number of treatment models. The authors have performed a detailed study of the neutron generation, ambient dose equivalent [H*(10)], and activation of a typical tungsten MLC and compared with those obtained from a brass aperture used in a typical proton therapy system. Brass aperture and tungsten MLC were modeled by absorber blocks in this study, representing worst-case scenario of a fully closed collimator. Results: With a tungsten MLC, the secondary neutron dose to the patient is at least 1.5 times higher than that from a brass aperture. The H*(10) from a tungsten MLC at 10 cm downstream is about 22.3 mSv/Gy delivered to water phantom by noncollimated 200 MeV beam of 20 cm diameter compared to 14 mSv/Gy for the brass aperture. For a 30-fraction treatment course, the activity per unit volume in brass aperture reaches 5.3 x 10{sup 4} Bq cm{sup -3} at the end of the last treatment. The activity in brass decreases by a factor of 380 after 24 h, additional 6.2 times after 40 days of cooling, and is reduced to background level after 1 yr. Initial activity in tungsten after 30 days of treating 30 patients per day is about 3.4 times higher than in brass that decreases only by a factor of 2 after 40 days and accumulates to 1.2 x 10{sup 6} Bq cm{sup -3} after a full year of operation. The daily utilization of the MLC leads to buildup of activity with time. The overall activity continues to increase due to {sup 179}Ta with a half-life of 1.82 yr and thus require prolonged storage for activity cooling. The H*(10) near the patient side of the tungsten block is about 100 {mu}Sv/h and is 27 times higher at the upstream side of the block. This would lead to an accumulated dose for therapists in a year that may exceed occupational maximum permissible dose (50 mSv/yr). The value of H*(10) at the upstream surface of the tungsten block is about 220 times higher than that of the brass. Conclusions: MLC is an efficient way for beam shaping and overall cost reduction device in proton therapy. However, based on this study, tungsten seems to be not an optimal material for MLC in proton beam therapy. Usage of tungsten MLC in clinic may create unnecessary risks associated with the secondary neutrons and induced radioactivity for patients and staff depending on the patient load. A careful selection of material for manufacturing of an optimal MLC for proton therapy is thus desired.

Moskvin, Vadim; Cheng, Chee-Wai; Das, Indra J. [Department of Radiation Oncology, Indiana University School of Medicine, Indianapolis, Indiana 46202 (United States) and Indiana University Health Proton Therapy Center (Formerly Midwest Proton Radiotherapy Institute), Bloomington, Indiana 47408 (United States)

2011-12-15T23:59:59.000Z

119

Comparison of Bond Scission Sequence of Methanol on Tungsten Monocarbide and Pt-Modified Tungsten Monocarbide  

Science Conference Proceedings (OSTI)

The ability to control the bond scission sequence of O-H, C-H, and C-O bonds is of critical importance in the effective utilization of oxygenate molecules, such as in reforming reactions and in alcohol fuel cells. In the current study, we use methanol as a probe molecule to demonstrate the possibility to control the decomposition pathways by supporting monolayer coverage of Pt on a tungsten monocarbide (WC) surface. Density functional theory (DFT) results reveal that on the WC and Pt/WC surfaces CH{sub 3}OH decomposes via O-H bond scission to form the methoxy (*CH{sub 3} O) intermediate. The subsequent decomposition of methoxy on the WC surface occurs through the C-O bond scission to form *CH{sub 3}, which reacts with surface *H to produce CH{sub 4}. In contrast, the decomposition of methoxy on the Pt/WC surface favors the C-H bond scission to produce *CH{sub 2} O, which prevents the formation of the *CH{sub 3} species and leads to the formation of a *CO intermediate through subsequent deprotonation steps. The DFT predictions are validated using temperature programmed desorption to quantify the gas-phase product yields and high resolution electron energy loss spectroscopy to determine the surface intermediates from methanol decomposition on Pt, WC, and Pt/WC surfaces.

Liu, P.; Stottlemyer, A.L.; Chen, J.G.

2010-09-14T23:59:59.000Z

120

Application to low-pressure deposition of tungsten  

SciTech Connect

This paper reports on a mode for the simultaneous reaction kinetics and transport processes in chemical vapor deposition (CVD) reactors extended to treat deposition of materials that have a broad range of surface characteristics, e.g. sites with multiple dangling bonds and adsorbates with multiple bonding configurations. The model uses the nature of the surface to determine the elementary processes that can take place during growth. Rate constants for these processes are calculated from first principles using statistical thermodynamics, transition state theory, and bond dissociation enthalpies. In this way, deposition rates are determined without either assuming the reaction mechanism or arbitrarily choosing any kinetic parameter values. The utility of the approach is illustrated by modeling low-pressure CVD of tungsten from tungsten hexafluoride and hydrogen. The treatment considers 14 species and eight reactions in the gas together with 21 species and 65 processes at the surface.

Arora, R.; Pollard, R. (Dept. of Chemical Engineering, Univ. of Houston, Houston, TX (US))

1991-05-01T23:59:59.000Z

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


121

Gas-tungsten arc welding of aluminum alloys  

SciTech Connect

A gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to provide a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surfaces are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy contiguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.

Frye, Lowell D. (Kingston, TN)

1984-01-01T23:59:59.000Z

122

Gas-tungsten arc welding of aluminum alloys  

DOE Patents (OSTI)

The present invention is directed to a gas-tungsten arc welding method for joining together structures formed of aluminum alloy with these structures disposed contiguously to a heat-damagable substrate of a metal dissimilar to the aluminum alloy. The method of the present invention is practiced by diamond machining the fay surfaces of the aluminum alloy structures to profice a mirror finish thereon having a surface roughness in the order of about one microinch. The fay surface are aligned and heated sufficiently by the tungsten electrode to fuse the aluminum alloy continguous to the fay surfaces to effect the weld joint. The heat input used to provide an oxide-free weld is significantly less than that required if the fay surfaces were prepared by using conventional chemical and mechanical practices.

Frye, L.D.

1982-03-25T23:59:59.000Z

123

Published on Web 08/16/2003 Vapor Phase Synthesis of Tungsten Nanowires  

E-Print Network (OSTI)

Vapor phase methods for synthesizing metal nanowires directly without the help of templates have not been studied extensively. Even though there have been few reports with one dating back to 1877 on metal whisker synthesis from the vapor phase, the inconclusive growth mechanism did not lead to any serious developments for nanowires. 1 Recently, there are also two reports with one using hydrogen on tungsten oxide for tungsten nanowires, and another using decomposition of tungsten complexed organic precursors for amorphous carbon sheathed, polycrystalline tungsten nanowires. 2 In this context, we report a novel method in which nucleation and growth of metal oxides at temperatures higher than the oxide decomposition temperatures lead to the respective metal nanowires. Specifically, we demonstrate this concept with the bulk synthesis of tungsten nanowires. The chemical vapor transport of tungsten in the presence of oxygen onto substrates kept at temperatures

Sreeram Vaddiraju; Hari Ch; Mahendra K. Sunkara

2003-01-01T23:59:59.000Z

124

Tungsten spectroscopy relevant to the diagnostics development of ITER divertor plasmas  

DOE Green Energy (OSTI)

The ITER tokamak will have tungsten divertor tiles and, consequently, the divertor plasmas are expected to contain tungsten ions. The spectral emission from these ions can serve to diagnose the divertor for plasma parameters such as tungsten concentrations, densities, ion and electron temperatures, and flow velocities. The ITER divertor plasmas will likely have densities around 10{sup 14-15} cm{sup -3} and temperatures below 150 eV. These conditions are similar to the plasmas at the Sustained Spheromak Physics Experiment (SSPX) in Livermore. To simulate ITER divertor plasmas, a tungsten impurity was introduced into the SSPX spheromak by prefilling it with tungsten hexacarbonyl prior to the usual hydrogen gas injection and initiation of the plasma discharge. The possibility of using the emission from low charge state tungsten ions to diagnose tokamak divertor plasmas has been investigated using a high-resolution extreme ultraviolet spectrometer.

Clementson, J; Beiersdorfer, P; Magee, E W; McLean, H S; Wood, R D

2009-12-01T23:59:59.000Z

125

CRITICAL FIELD FOR SUPERCONDUCTIVITY AND LOW-TEMPERATURE NORMAL-STATE HEAT CAPACITY OF TUNGSTEN  

E-Print Network (OSTI)

y CRITICAL FIELD FOR SUPERCONDUCTIVITY AND LOW-TEMPERATURECritical Field for Superconductivity and Low-Temperaturemagnetic field for superconductivity In tungsten from 5.5 to

Triplett, B.B.

2008-01-01T23:59:59.000Z

126

Spark Plasma Sintering of Tungsten-Rhenium Alloys for Very High ...  

Science Conference Proceedings (OSTI)

In this study, the tungsten-rhenium microstructure was optimized using alternative techniques such as high energy ball milling and spark plasma sintering, which...

127

A Review on Alloying in Tungsten Heavy Alloys - Programmaster.org  

Science Conference Proceedings (OSTI)

The review will concentrate on the alloying additions that have been made to the classic liquid phase sintered tungsten heavy alloys primarily based on W-Ni-Fe...

128

Process for removing halogenated aliphatic and aromatic compounds from petroleum products. [Polychlorinated biphenyls; methylene chloride; perchloroethylene; trichlorofluoroethane; trichloroethylene; chlorobenzene  

DOE Patents (OSTI)

A process for removing halogenated aliphatic and aromatic compounds, e.g., polychlorinated biphenyls, from petroleum products by solvent extraction. The halogenated aliphatic and aromatic compounds are extracted from a petroleum product into a polar solvent by contracting the petroleum product with the polar solvent. The polar solvent is characterized by a high solubility for the extracted halogenated aliphatic and aromatic compounds, a low solubility for the petroleum product and considerable solvent power for polyhydroxy compound. The preferred polar solvent is dimethylformamide. A miscible polyhydroxy compound, such as, water, is added to the polar extraction solvent to increase the polarity of the polar extraction solvent. The halogenated aliphatic and aromatic compounds are extracted from the highly-polarized mixture of polyhydroxy compound and polar extraction solvent into a low polar or nonpolar solvent by contacting the polyhydroxy compound-polar solvent mixture with the low polar or nonpolar solvent. The halogenated aliphatic and aromatic compounds in the low polar or nonpolar solvent by physical means, e.g., vacuum evaporation. The polar and nonpolar solvents are recovered for recycling. The process can easily be designed for continuous operation. Advantages of the process include that the polar solvent and a major portion of the nonpolar solvent can be recycled, the petroleum products are reclaimable and the cost for disposing of waste containing polychlorinated biphenyls is significantly reduced. 2 tables.

Googin, J.M.; Napier, J.M.; Travaglini, M.A.

1982-03-31T23:59:59.000Z

129

Etching properties and electrical characterization of surfaces of silicon-on-insulator substrates in presence of halogens  

Science Conference Proceedings (OSTI)

We have studied the etching properties of silicon-on-insulator (SOI) substrates in recently developed chromium-free solutions containing halogens. We have shown that the presence of halogen compounds X (I{sup -}, Br{sup -}...) in HF/HNO{sub 3}/CH{sub 3}COOH solutions is required for a selective and preferential etching on SOI. The etching rate of such solutions increases with the dissolved halogen concentrations. The chemical reactivity of Si-X (X = Br{sup -}, I{sup -}..) bonds has been analyzed by X-ray Photoelectron Spectroscopy (XPS), Pseudo-MOS (flatband potential) and Kelvin Force Microscopy (KFM) measurements. A negative shift of flatband potential values is explained by an increasing concentration of halogen compounds in the solution and a substitution of Si-H (F) bonds by Si-X bonds during the reaction. Though Si-X bonds, and more particularly Si-I bonds, have been confirmed only at trace levels using XPS, we believe that the formation of Si-X bonds is supported by a mechanism of surface dipoles. Unexpectedly, no significant change in work function could be detected using KFM measurements. Some suggestions, based on KFM technique improvements, are made to explain such results. Finally, though the interaction mechanism between silicon, fluoride, iodide, and nitric acid is not clearly elucidated by our experimental results, the formation of Si-halogen bonds is crucial for etching and defect decoration capability.

Abbadie, A.; Hamaide, G.; Chaupin, M.; Brunier, F. [SOITEC, Parc Technologique des Fontaines, 38920 Crolles cedex (France); Mariolle, D.; Martinez, E. [CEA, LETI, MINATEC, F38054 Grenoble (France); Maehliss, J. [Goethe University, Institute of Inorganic and Analytical Chemistry, 60438 Frankfurt (Germany)

2012-03-15T23:59:59.000Z

130

Systematic studies of the nucleation and growth of ultrananocrystalline diamond films on silicon substrates coated with a tungsten layer  

Science Conference Proceedings (OSTI)

We report on effects of a tungsten layer deposited on silicon surface on the effectiveness for diamond nanoparticles to be seeded for the deposition of ultrananocrystalline diamond (UNCD). Rough tungsten surface and electrostatic forces between nanodiamond seeds and the tungsten surface layer help to improve the adhesion of nanodiamond seeds on the tungsten surface. The seeding density on tungsten coated silicon thus increases. Tungsten carbide is formed by reactions of the tungsten layer with carbon containing plasma species. It provides favorable (001) crystal planes for the nucleation of (111) crystal planes by Microwave Plasma Enhanced Chemical Vapor Deposition (MPECVD) in argon diluted methane plasma and further improves the density of diamond seeds/nuclei. UNCD films grown at different gas pressures on tungsten coated silicon which is pre-seeded by nanodiamond along with heteroepitaxially nucleated diamond nuclei were characterized by Raman scattering, field emission-scanning electron microscopy, and high resolution-transmission electron microscopy.

Chu, Yueh-Chieh; Jiang, Gerald [Institute of Microelectronics, No.1, University Road, Tainan 701, Taiwan (China); Tu, Chia-Hao [Institute of Nanotechnology and Microsystems Engineering, No.1, University Road, Tainan 701, Taiwan (China); Department of Materials Science and Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan (China); Chang Chi [Institute of Nanotechnology and Microsystems Engineering, No.1, University Road, Tainan 701, Taiwan (China); Liu, Chuan-pu; Ting, Jyh-Ming [Department of Materials Science and Engineering, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan (China); Lee, Hsin-Li [Industrial Technology Research Institute - South, Tainan 701, Taiwan (China); Tzeng, Yonhua [Institute of Microelectronics, No.1, University Road, Tainan 701, Taiwan (China); Advanced Optoelectronics Technology Center, No.1, University Road, Tainan 701, Taiwan (China); Auciello, Orlando [Argonne National Laboratory, Materials Science Division, 9700 S. Cass Avenue, Argonne, Illinois 60439 (United States)

2012-06-15T23:59:59.000Z

131

THERMAL PERFORMANCE OF A DUAL-CHANNEL, HELIUM-COOLED, TUNGSTEN HEAT EXCHANGER  

E-Print Network (OSTI)

THERMAL PERFORMANCE OF A DUAL-CHANNEL, HELIUM-COOLED, TUNGSTEN HEAT EXCHANGER Dennis L. Youchison-cooled, refractory heat exchangers are now under consideration for first wall and divertor applications-channel, helium-cooled heat exchanger made almost entirely of tungsten was designed and fabricated by Thermacore

California at Los Angeles, University of

132

Tungsten Lamps as an Affordable Light Source for Testing of Photovoltaic Cells  

Science Conference Proceedings (OSTI)

An improved Tungsten light source system for photovoltaic cell testing made from low-cost, commercially available materials is presented as an alternative to standard expensive testing equipment. In this work, spectral correction of the Tungsten light ... Keywords: I-V measurement, Light source, Photovoltaic, Testing

Jeydmer Aristizabal; Badr Omrane; Clint Landrock; Sasan Vosoogh-Grayli; Yindar Chuo; Jasbir N. Patel; Bozena Kaminska; Carlo Menon

2011-06-01T23:59:59.000Z

133

Simulation of Armor Penetration by Tungsten Rods: ALEGRA Validation Report  

E-Print Network (OSTI)

Results from simulations of the impact and penetration of tungsten alloy rods into thick rolled armor plates are presented. The calculations were performed with the CTH and ALEGRA computer codes using the DOE massively parallel TFLOPS computer co-developed by Sandia National Laboratory and Intel Corporation. Comparisons with experimental results are presented. Agreement of the two codes with each other and with the empirical results for penetration channel depth and radius is very close. Other shock physics and penetration features are also compared to simulation results. Distribution Category UC-705 ii Intentionally Left Blank iii Contents List of Figures ....................................................................................................... p. iv List of Tables ..........................................................................................................p. v Executive Summary ..............................................................................

Daniel E. Carroll; Eugene S. Hertel, Jr.; Timothy G. Trucano; Category Uc

1997-01-01T23:59:59.000Z

134

Simulation of armor penetration by tungsten rods: ALEGRA validation report  

Science Conference Proceedings (OSTI)

Results from simulations of the impact and penetration of tungsten alloy rods into thick rolled armor plates are presented. The calculations were performed with the CTH and ALEGRA computer codes using the DOE massively parallel TFLOPS computer co-developed by Sandia National Laboratory and Intel Corporation. Comparisons with experimental results are presented. Agreement of the two codes with each other and with the empirical results for penetration channel depth and radius is very close. Other shock physics and penetration features are also compared to simulation results.

Carroll, D.E.; Hertel, E.S. Jr.; Trucano, T.G.

1997-11-01T23:59:59.000Z

135

Molecular dynamics simulation of erosion and surface evolution of tungsten due to bombardment with deuterium and carbon in  

E-Print Network (OSTI)

Molecular dynamics simulation of erosion and surface evolution of tungsten due to bombardment Available online 24 May 2013 Keywords: Molecular dynamic simulation Carbon irradiation on tungsten t The behavior of tungsten as plasma facing material in fusion environment is investigated using molecular

Harilal, S. S.

136

A Glove Box Enclosed Gas-Tungsten Arc Welding System  

SciTech Connect

This report describes an inert atmosphere enclosed gas-tungsten arc welding system which has been assembled in support of the MC2730, MC2730A and MC 3500 Radioisotope Thermoelectric Generator (RTG) Enhanced Surveillance Program. One goal of this program is to fabricate welds with microstructures and impurity levels which are similar to production heat source welds previously produced at Los Alamos National Laboratory and the Mound Facility. These welds will subsequently be used for high temperature creep testing as part of the overall component lifetime assessment. In order to maximize the utility of the welding system, means for local control of the arc atmosphere have been incorporated and a wide range of welding environments can easily be evaluated. The gas-tungsten arc welding system used in the assembly is computer controlled, includes two-axis and rotary motion, and can be operated in either continuous or pulsed modes. The system can therefore be used for detailed research studies of welding impurity effects, development of prototype weld schedules, or to mimic a significant range of production-like welding conditions. Fixturing for fabrication of high temperature creep test samples have been designed and constructed, and weld schedules for grip-tab and test welds have been developed. The microstructure of these welds have been evaluated and are consistent with those used during RTG production.

Reevr, E, M; Robino, C.V.

1999-07-01T23:59:59.000Z

137

Thermal oxidation of tungsten-based sputtered coatings  

SciTech Connect

The effect of the addition of nickel, titanium, and nitrogen on the air oxidation behavior of W-based sputtered coatings in the temperature range 600 to 800 C was studied. In some cases these additions significantly improved the oxidation resistance of the tungsten coatings. As reported for bulk tungsten, all the coatings studied were oxidized by layers following a parabolic law. Besides WO{sub 3} and WO{sub x} phases detected in all the oxidized coatings, TiO{sub 2} and NiWO{sub 4} were also detected for W-Ti and W-Ni films, respectively. WO{sub x} was present as an inner protective compact layer covered by the porous WO{sub 3} oxide. The best oxidation resistance was found for W-Ti and W-N-Ni coatings which also presented the highest activation energies (E{sub a} = 234 and 218 kJ/mol, respectively, as opposed to E{sub a} {approx} 188 kJ/mol for the other coatings). These lower oxidation weight gains were attributed to the greater difficulty of the inward diffusion of oxygen ions for W-Ti films, owing to the formation of fine particles of TiO{sub 2}, and the formation of the external, more protective layer of NiWO{sub 4} for W-N-Ni coatings.

Louro, C.; Cavaleiro, A. [Dept. de Engenharia Mecanica-Polo II, Coimbra (Portugal)

1997-01-01T23:59:59.000Z

138

In situ thermally enhanced biodegradation of petroleum fuel hydrocarbons and halogenated organic solvents  

DOE Patents (OSTI)

An in situ thermally enhanced microbial remediation strategy and a method for the biodegradation of toxic petroleum fuel hydrocarbon and halogenated organic solvent contaminants. The method utilizes nonpathogenic, thermophilic bacteria for the thermal biodegradation of toxic and carcinogenic contaminants, such as benzene, toluene, ethylbenzene and xylenes, from fuel leaks and the chlorinated ethenes, such as trichloroethylene, chlorinated ethanes, such as 1,1,1-trichloroethane, and chlorinated methanes, such as chloroform, from past solvent cleaning practices. The method relies on and takes advantage of the pre-existing heated conditions and the array of delivery/recovery wells that are created and in place following primary subsurface contaminant volatilization efforts via thermal approaches, such as dynamic underground steam-electrical heating.

Taylor, Robert T. (Livermore, CA); Jackson, Kenneth J. (San Leandro, CA); Duba, Alfred G. (Livermore, CA); Chen, Ching-I (Danville, CA)

1998-01-01T23:59:59.000Z

139

In situ thermally enhanced biodegradation of petroleum fuel hydrocarbons and halogenated organic solvents  

DOE Patents (OSTI)

An in situ thermally enhanced microbial remediation strategy and a method for the biodegradation of toxic petroleum fuel hydrocarbon and halogenated organic solvent contaminants are described. The method utilizes nonpathogenic, thermophilic bacteria for the thermal biodegradation of toxic and carcinogenic contaminants, such as benzene, toluene, ethylbenzene and xylenes, from fuel leaks and the chlorinated ethenes, such as trichloroethylene, chlorinated ethanes, such as 1,1,1-trichloroethane, and chlorinated methanes, such as chloroform, from past solvent cleaning practices. The method relies on and takes advantage of the pre-existing heated conditions and the array of delivery/recovery wells that are created and in place following primary subsurface contaminant volatilization efforts via thermal approaches, such as dynamic underground steam-electrical heating. 21 figs.

Taylor, R.T.; Jackson, K.J.; Duba, A.G.; Chen, C.I.

1998-05-19T23:59:59.000Z

140

Mechanism of the Initial Oxidation of Hydrogen andHalogen Terminated Ge(111) Surfaces in Air  

DOE Green Energy (OSTI)

The initial stage of the oxidation of Ge(111) surfaces etched by HF, HCl and HBr solutions is systematically studied using synchrotron radiation photoelectron spectroscopy (SR-PES). We perform controlled experiments to differentiate the effects of different oxidation factors. SR-PES results show that both moisture and oxygen contribute to the oxidation of the surfaces; however, they play different roles in the oxidation process. Moisture effectively replaces the hydrogen and halogen termination layers with hydroxyl (OH), but hardly oxidizes the surfaces further. On the other hand, dry oxygen does not replace the termination layers, but breaks the Ge-Ge back bonds and oxidizes the substrates with the aid of moisture. In addition, room light enhances the oxidation rate significantly.

Sun, Shiyu; /Stanford U., Phys. Dept.; Sun, Yun; Liu, Zhi; Lee, Dong-Ick; Pianetta, Piero; /SLAC, SSRL

2006-08-23T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

FIELD SCREENING FOR HALOGENATED VOLATILE ORGANIC COMPOUNDS: THE NEW X-WAND HVOC SCREENING DEVICE  

SciTech Connect

Western Research Institute (WRI) has developed new methodology and a test kit to screen soil or water samples for halogenated volatile organic compounds (HVOCs) in the field. The technology has been designated the X-Wand{trademark} screening tool. The new device uses a heated diode sensor that is commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. This sensor is selective to halogens. It does not respond to volatile aromatic hydrocarbons, such as those in gasoline, and it is not affected by high humidity. In the current work, the heated diode leak detectors were modified further to provide units with rapid response and enhanced sensitivity. The limit of detection for trichloroethylene TCE in air is 0.1 mg/m{sup 3} (S/N = 2). The response to other HVOCS relative to TCE is similar. Variability between sensors and changes in a particular sensor over time can be compensated for by normalizing sensor readings to a maximum sensor reading at 1,000 mg/m{sup 3} TCE. The soil TCE screening method was expanded to include application to water samples. Assuming complete vaporization, the detection limit for TCE in soil is about 1 ug/kg (ppb) for a 25-g sample in an 8-oz jar. The detection limit for TCE in water is about 1 ug/L (ppb) for a 25-mL sample in an 8-oz jar. This is comparable to quantitation limits of EPA GC/MS laboratory methods. A draft ASTM method for screening TCE contaminated soils using a heated diode sensor was successfully submitted for concurrent main committee and subcommittee balloting in ASTM Committee D 34 on Waste Management. The method was approved as ASTM D 7203-05, Standard Test Method for Screening Trichloroethylene (TCE)-Contaminated Soil Using a Heated Diode Sensor.

John F. Schabron; Susan S. Sorini; Joseph F. Rovani Jr

2006-03-01T23:59:59.000Z

142

Mechanisms of gas precipitation in plasma-exposed tungsten  

Science Conference Proceedings (OSTI)

Precipitation in subsurface bubbles is a key process that governs how hydrogen isotopes migrate through and become trapped within plasma-exposed tungsten. We describe a continuum-scale model of hydrogen diffusion in plasma-exposed materials that includes the effects of precipitation. The model can account for bubble expansion via dislocation loop punching, using an accurate equation of state to determine the internal pressure. This information is used to predict amount of hydrogen trapped by bubbles, as well as the conditions where the bubbles become saturated. In an effort to validate the underlying assumptions, we compare our results with published positron annihilation and thermal desorption spectroscopy data, as well as our own measurements using the tritium plasma experiment (TPE).

R. D. Kolasinski; D. F. Cowgill; D. C. Donovan; M. Shimada

2012-05-01T23:59:59.000Z

143

Microsoft Word - Lamellae tungsten tile design thermal and electromagnetic stress analysis_Final.doc  

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

Lamellae tungsten tile design transient Lamellae tungsten tile design transient thermal/ electromagnetic stress analysis Thomas Willard*, Rui Vieira, Samuel Pierson MIT Plasma Science and Fusion Center, Cambridge, MA 02139 8 June 2006 Abstract A transient thermal/ electromagnetic stress analysis of the lamellae tungsten tile design has been performed to determine if the design is adequate to meet the maximum design load conditions of 12 MW/ m 2 uniform heat flux for 5 seconds (single pulse, no Diverter Plate temperature ratcheting) , superimposed on the electromagnetic body load due to eddy currents generated by disruptions. The results show that the design is adequate, with the stresses in the tungsten lamellae and the TZM molybdenum hardware less than the ultimate strength of

144

Tungsten bridge for the low energy ignition of explosive and energetic materials  

DOE Patents (OSTI)

A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose.

Benson, David A. (Albuquerque, NM); Bickes, Jr., Robert W. (Albuquerque, NM); Blewer, Robert S. (Albuquerque, NM)

1990-01-01T23:59:59.000Z

145

Tungsten bridge for the low energy ignition of explosive and energetic materials  

DOE Patents (OSTI)

A tungsten bridge device for the low energy ignition of explosive and energetic materials is disclosed. The device is fabricated on a silicon-on-sapphire substrate which has an insulating bridge element defined therein using standard integrated circuit fabrication techniques. Then, a thin layer of tungsten is selectively deposited on the silicon bridge layer using chemical vapor deposition techniques. Finally, conductive lands are deposited on each end of the tungsten bridge layer to form the device. It has been found that this device exhibits substantially shorter ignition times than standard metal bridges and foil igniting devices. In addition, substantially less energy is required to cause ignition of the tungsten bridge device of the present invention than is required for common metal bridges and foil devices used for the same purpose. 2 figs.

Benson, D.A.; Bickes, R.W. Jr.; Blewer, R.S.

1990-12-11T23:59:59.000Z

146

Molybdenum-copper and tungsten-copper alloys and method of making  

DOE Patents (OSTI)

Molybdenum-copper and tungsten-copper alloys are prepared by a consumable electrode method in which the electrode consists of a copper matrix with embedded strips of refractory molybdenum or tungsten. The electrode is progressively melted at its lower end with a superatmospheric inert gas pressure maintained around the liquefying electrode. The inert gas pressure is sufficiently above the vapor pressure of copper at the liquidus temperature of the alloy being formed to suppress boiling of liquid copper. 6 figs.

Schmidt, F.A.; Verhoeven, J.D.; Gibson, E.D.

1989-05-23T23:59:59.000Z

147

Molybdenum-copper and tungsten-copper alloys and method of making  

DOE Patents (OSTI)

Molybdenum-copper and tungsten-copper alloys are prepared by a consumable electrode method in which the electrode consists of a copper matrix with embedded strips of refractory molybdenum or tungsten. The electrode is progressively melted at its lower end with a superatmospheric inert gas pressure maintained around the liquifying electrode. The inert gas pressure is sufficiently above the vapor pressure of copper at the liquidus temperature of the alloy being formed to suppress boiling of liquid copper.

Schmidt, Frederick A. (Ames, IA); Verhoeven, John D. (Ames, IA); Gibson, Edwin D. (Ames, IA)

1989-05-23T23:59:59.000Z

148

Study on the oxidation and reduction of tungsten surface for sub-50 nm patterning process  

Science Conference Proceedings (OSTI)

The oxidation characteristics of tungsten line pattern during the carbon-based mask-layer removal process using oxygen plasmas have been investigated for sub-50 nm patterning processes, in addition to the reduction characteristics of the WO{sub x} layer formed on the tungsten line surface using hydrogen plasmas. The surface oxidation of tungsten lines during the mask layer removal process could be minimized by using low-temperature (300 K) plasma processing for the removal of the carbon-based material. Using this technique, the thickness of WO{sub x} on the tungsten line could be decreased to 25% compared to results from high-temperature processing. The WO{sub x} layer could also be completely removed at a low temperature of 300 K using a hydrogen plasma by supplying bias power to the tungsten substrate to provide a activation energy for the reduction. When this oxidation and reduction technique was applied to actual 40-nm-CD device processing, the complete removal of WO{sub x} formed on the sidewall of tungsten line could be observed.

Kim, Jong Kyu; Nam, Seok Woo; Cho, Sung Il; Jhon, Myung S.; Min, Kyung Suk; Kim, Chan Kyu; Jung, Ho Bum; Yeom, Geun Young [Memory Division Semiconductor Business, Samsung Electronics, San No. 16 Banwol-Ri, Taean-Eup, Hwasung-City, Gyeonggi-Do 449-711, South Korea and Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746 (Korea, Republic of); Memory Division Semiconductor Business, Samsung Electronics, San No. 16 Banwol-Ri, Taean-Eup, Hwasung-City, Gyeonggi-Do 449-711 (Korea, Republic of); Department of Chemical Engineering and Data Storage Systems Center, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (United States); Department of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 440-746 (Korea, Republic of)

2012-11-15T23:59:59.000Z

149

Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith  

DOE Patents (OSTI)

New amorphous molybdenum/tungsten sulfides with the general formula M.sup.n+.sub.2x/n (L.sub.6 S.sub.8)S.sub.x, where L is molybdenum or tungsten and M is a ternary metal, has been developed. Characterization of these amorphous materials by chemical and spectroscopic methods (IR, Raman, PES) shows that the (M.sub.6 S.sub.8).sup.0 cluster units are present. Vacuum thermolysis of the amorphous Na.sub.2x (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH first produces poorly crystalline NaMo.sub.6 S.sub.8 by disproportionation at 800.degree. C. and well-crystallized NaMo.sub.6 S.sub.8 at .gtoreq. 900.degree. C. Ion-exchange of the sodium material in methanol with soluble M.sup.2+ and M.sup.3+ salts (M=Sn, Co, Ni, Pb, La, Ho) produces the M.sup.n+.sub.2x/n (Mo.sub.6 S.sub.8)S.sub.x .multidot.yMeOH compounds. Additionally, the new reduced ternary molybdenum sulfides with the general formula M.sup.n+.sub.2x/n Mo.sub.6 S.sub.8+x (MeOH).sub.y MMOS! (M=Sn, Co, Ni) is an effective hydrodesulfurization (HDS) catalyst both as-prepared and after a variety of pretreatment conditions. Under specified pretreatment conditions with flowing hydrogen gas, the SnMoS type catalyst can be stabilized, and while still amorphous, can be considered as "Chevrel phase-like" in that both contain Mo.sub.6 S.sub.8 cluster units. Furthermore, the small cation NiMoS and CoMoS type pretreated catalyst showed to be very active HDS catalysts with rates that exceeded the model unpromoted and cobalt-promoted MoS.sub.2 catalysts.

Hilsenbeck, Shane J. (Ames, IA); McCarley, Robert E. (Ames, IA); Schrader, Glenn L. (Ames, IA); Xie, Xiaobing (College Station, TX)

1999-02-16T23:59:59.000Z

150

Hydrogen--halogen energy storage system. Annual report, January--December 1977  

DOE Green Energy (OSTI)

Work at Brookhaven National Laboratory on the electrochemically regenerative hydrogen--chlorine energy storage system has included electrochemical investigations, materials studies, and technoeconomic assessment. Electrochemical studies have confirmed the reversibility of the cell reactions and the possibility of using the same cell in the electrolysis and fuel cell mode. The hydrogen--chlorine cell differs from most batteries in that the open circuit potential varies appreciably with temperature and depth of discharge. The temperature variation of the open circuit potential reflects the large negative entropy of formation of HCl. A detailed heat and mass balance analysis has been carried out for the H/sub 2//Cl/sub 2/ system for one method of reactant storage and two schemes of heat exchange between the hydrochloric acid storage subsystem and the reactant storage subsystems. Characterization of Nafion membranes in H/sub 2//Cl/sub 2/ cells is reported. From a cost comparison on a 20 MW/200 MWh electrochemically regenerative hydrogen--halogen system it was concluded that the use of either clorine or bromine or alternative methods of chlorine storage had an insignificant effect on the overall cost of the system. The most cost effective method of hydrogen storage is very dependent on the cost of activated metal hydrides.

McBreen, J.; Srinivasan, S.; Salzano, F.J.; Beaufrere, A.H.

1978-09-01T23:59:59.000Z

151

Lab Spotlight: Sandia National Laboratory  

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

Sandia National Laboratories Sandia National Laboratories Illustration of integrated circuit Figure 1. An application-specific integrated circuit being developed for advanced artificial retinas. Click on image to enlarge. Microscale Enablers More advanced artificial retinas are relying on miniaturized electronics for processing incoming images and activating the corresponding electrodes to communicate with retinal cells and ultimately the brain. The goal of these devices, being developed through a U.S. Department of Energy (DOE) collaboration, is to continually improve their visual resolution so that implanted individuals eventually will be able to read large print, recognize faces, and move about without aid. Sandia National Laboratories' expertise in the development, fabrication, and production

152

Spotlights Archive | Department of Energy  

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

April 11, 2013 April 11, 2013 C-SR-10 Uintah Mine, Colorado, LM Uranium Lease Tracts Abandoned Uranium Mines Report to Congress: LM Wants Your Input The U.S. Department of Energy (DOE) Office of Legacy Management (LM) is seeking stakeholder input on an abandoned uranium mines report to Congress. January 9, 2013 LM Continues to Work with the Navajo Nation The U.S. Department of Energy (DOE) Office of Legacy Management (LM) continues to work with the Navajo Nation to perform long-term surveillance and maintenance (LTS&M) at four Uranium Mill Tailings Radiation Control Act (UMTRCA) Title I sites located on the Navajo Nation January 8, 2013 A Northern Saw-Whet Owl is captured for banding during the banding demonstration at the Fernald Preserve in Ohio in November Saw What? Saw Whet!

153

Spotlights Archive | Department of Energy  

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

October 16, 2012 October 16, 2012 LM Co-Hosts Internatonal Workshop on Uranium Legacy Sites The U.S. Department of Energy (DOE) Office of Legacy Management (LM) co-hosted, with the International Atomic Energy Agency (IAEA), a week of visits to DOE sites in Colorado and Utah, and a 4-day workshop in Grand Junction, Colorado. October 16, 2012 LM Conducts Groundwater and Soil Investigation at Riverton, Wyoming, in Response to 2010 Flood A team representing two Federal agencies-the U.S. Department of Energy (DOE) Office of Legacy Management and the U.S. Geological Survey-is evaluating redistribution of contaminants at the Riverton, Wyoming, Processing Site October 16, 2012 LM's New Role for the DOE Title X Reimbursement Program In May 2011, the Title X claim review and audit function was transferred

154

Employee Spotlights | Argonne National Laboratory  

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

of 63 Jermery Jenkins honored with Lifesaving Award In 2012, while dining at an area restaurant, Jeremy Jenkins (NWM) saved a woman's life. When the woman began choking, Jenkins...

155

nuclear energy in the spotlight  

Science Conference Proceedings (OSTI)

In the House, the Science and Technology Subcommittee on Energy and the ... a comprehensive approach to waste management, including research into fuel...

156

Spotlights Archive | Department of Energy  

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

Defense Authorization Act to undertake a review of, and prepare a report on, abandoned uranium mines (AUM) in the U.S. that provided ore for atomic energy defense activities. The...

157

Spotlights Archive | Department of Energy  

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

Act for Fiscal Year 2013 to undertake a review of, and prepare a report on, abandoned uranium mines in the United States that provided uranium ore for atomic energy defense...

158

Lab Spotlight: Brookhaven National Laboratory  

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

Brookhaven National Laboratory Pet Scans Show Brain Responses to Light, Electrical Stimulation A study measuring metabolic changes in the brains of sighted people is showing...

159

Employee Spotlights | Argonne National Laboratory  

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

& simulation ---Nuclear fuel cycle ----Geology & disposal ---Reactors ----Nuclear reactor safety ----Nuclear reactor materials ----Nuclear system technologies & diagnostics...

160

Deuterium Depth Profile in Neutron-Irradiated Tungsten Exposed to Plasma  

Science Conference Proceedings (OSTI)

The effect of radiation damage has been mainly simulated using high-energy ion bombardment. The ions, however, are limited in range to only a few microns into the surface. Hence, some uncertainty remains about the increase of trapping at radiation damage produced by 14 MeV fusion neutrons, which penetrate much farther into the bulk material. With the Japan-US joint research project: Tritium, Irradiations, and Thermofluids for America and Nippon (TITAN), the tungsten samples (99.99 % pure from A.L.M.T., 6mm in diameter, 0.2mm in thickness) were irradiated to high flux neutrons at 50 C and to 0.025 dpa in the High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL). Subsequently, the neutron-irradiated tungsten samples were exposed to a high-flux deuterium plasma (ion flux: 1021-1022 m-2s-1, ion fluence: 1025-1026 m-2) in the Tritium Plasma Experiment (TPE) at the Idaho National Laboratory (INL). First results of deuterium retention in neutron-irradiated tungsten exposed in TPE have been reported previously. This paper presents the latest results in our on-going work of deuterium depth profiling in neutron-irradiated tungsten via nuclear reaction analysis. The experimental data is compared with the result from non neutron-irradiated tungsten, and is analyzed with the Tritium Migration Analysis Program (TMAP) to elucidate the hydrogen isotope behavior such as retention and depth distribution in neutron-irradiated and non neutron-irradiated tungsten.

Masashi Shimada; G. Cao; Y. Hatano; T. Oda; Y. Oya; M. Hara; P. Calderoni

2011-05-01T23:59:59.000Z

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


161

Utilization of geothermal energy in the mining and processing of tungsten ore. Quarterly report  

DOE Green Energy (OSTI)

The status of the engineering and economic feasibility study of utilizing geothermal energy for the mining and processing of tungsten ore at the Union Carbide-Metals Division Pine Creek tungsten complex near Bishop, Calfironia is reviewed. Results of geophysical data analysis including determination of assumed resource parameters are presented. The energy utilization evaluation identifies potential locations for substituting geothermal energy for fossil fuel energy using current technology. Preliminary analyses for local environmental and institutional barriers to development of a geothermal system are also provided.

Lane, C.K.; Erickson, M.V.; Lowe, G.D.

1980-02-01T23:59:59.000Z

162

Separation of toxic metal ions, hydrophilic hydrocarbons, hydrophobic fuel and halogenated hydrocarbons and recovery of ethanol from a process stream  

DOE Patents (OSTI)

This invention provides a process to tremendously reduce the bulk volume of contaminants obtained from an effluent stream produced subsurface remediation. The chemicals used for the subsurface remediation are reclaimed for recycling to the remediation process. Additional reductions in contaminant bulk volume are achieved by the ultra-violet light destruction of halogenated hydrocarbons, and the complete oxidation of hydrophobic fuel hydrocarbons and hydrophilic hydrocarbons. The contaminated bulk volume will arise primarily from the disposal of the toxic metal ions. The entire process is modular, so if there are any technological breakthroughs in one or more of the component process modules, such modules can be readily replaced. 3 figs.

Kansa, E.J.; Anderson, B.L.; Wijesinghe, A.M.; Viani, B.E.

1999-05-25T23:59:59.000Z

163

Separation of toxic metal ions, hydrophilic hydrocarbons, hydrophobic fuel and halogenated hydrocarbons and recovery of ethanol from a process stream  

DOE Patents (OSTI)

This invention provides a process to tremendously reduce the bulk volume of contaminants obtained from an effluent stream produced subsurface remediation. The chemicals used for the subsurface remediation are reclaimed for recycling to the remediation process. Additional reductions in contaminant bulk volume are achieved by the ultra-violet light destruction of halogenated hydrocarbons, and the complete oxidation of hydrophobic fuel hydrocarbons and hydrophilic hydrocarbons. The contaminated bulk volume will arise primarily from the disposal of the toxic metal ions. The entire process is modular, so if there are any technological breakthroughs in one or more of the component process modules, such modules can be readily replaced.

Kansa, Edward J. (Livermore, CA); Anderson, Brian L. (Lodi, CA); Wijesinghe, Ananda M. (Tracy, CA); Viani, Brian E. (Oakland, CA)

1999-01-01T23:59:59.000Z

164

Tungsten nano-tendril growth in the Alcator C-Mod divertor  

E-Print Network (OSTI)

Growth of tungsten nano-tendrils ('fuzz') has been observed for the first time in the divertor region of a high-power density tokamak experiment. After 14 consecutive helium L-mode discharges in Alcator C-Mod, the tip of ...

Baldwin, M.J.

165

Utilization of geothermal energy in the mining and processing of tungsten ore. Final report  

DOE Green Energy (OSTI)

The engineering, economic, and environmental feasibility of the use of low and moderate temperature geothermal heat in the mining and processing of tungsten ore is explored. The following are covered: general engineering evaluation, design of a geothermal energy system, economics, the geothermal resource, the institutional barriers assessment, environmental factors, an alternate geothermal energy source, and alternates to geothermal development. (MHR)

Erickson, M.V.; Lacy, S.B.; Lowe, G.D.; Nussbaum, A.M.; Walter, K.M.; Willens, C.A.

1981-01-01T23:59:59.000Z

166

Tungsten uptake kinetics and trophic1 transfer into a novel gastropod model2  

E-Print Network (OSTI)

some27 siderophilic tendencies that are very similar to uranium and thorium, and which have similar it a unique29 element. Tungsten has one of the greatest densities (19.25 g/cm3 ), after only uranium for industrial37 applications such as mine drilling heads and grinding bits. Considering its weight and relative

Jawitz, James W.

167

Welding of NOREM Iron-Base Hardfacing Alloy Wire Products: Procedures for Gas Tungsten Arc Welding  

Science Conference Proceedings (OSTI)

New wire products have been successfully fabricated and procedures developed for automatic gas tungsten arc welding of wear-resistant NOREM iron-base alloys. Research demonstrated that sound multi-layer welds on carbon and stainless steel substrates can be obtained without the use of preheating. These developments point to the advantages of NOREM alloys for field applications, such as valve refurbishing.

1992-09-01T23:59:59.000Z

168

SPS Fabrication of Tungsten-Rhenium Alloys in Support of NTR Fuels Development  

SciTech Connect

Abstract. Tungsten metal slugs were fabricated via Spark Plasma Sintering (SPS) of powdered metals at temperatures ranging from 1575 K to 1975 K and hold times of 5 minutes to 30 minutes, using powders with an average diameter of 7.8 ?m. Sintered tungsten specimens were found to have relative densities ranging from 83 % to 94 % of the theoretical density for tungsten. Consolidated specimens were also tested for their Vickers Hardness Number (VHN), which was fitted as a function of relative density; the fully consolidated VHN was extrapolated to be 381.45 kg/mm2. Concurrently, tungsten and rhenium powders with average respective diameters of 0.5 ?m and 13.3 ?m were pre-processed either by High-Energy-Ball-Milling (HEBM) or by homogeneous mixing to yield W-25at.%Re mixtures. The powder batches were sintered at temperatures of 1975 K and 2175 K for hold times ranging from 0 minutes to 60 minutes yielding relative densities ranging from 94% to 97%. The combination of HEBM and sintering showed a significant decrease in the inter-metallic phases compared to that of the homogenous mixing and sintering.

Jonathan A. Webb; Indrajit Charit; Cory Sparks; Darryl P. Butt; Megan Frary; Mark Carroll

2011-02-01T23:59:59.000Z

169

New novel cleaning technique for extending mean time between mechanical cleans in a Genus tungsten CVD reactor  

SciTech Connect

During the chemical vapor deposition of blanket tungsten from the reduction of tungsten hexafluoride (WF{sub 6}), metallic parts within the reaction chamber accumulate metallic tungsten, tungsten oxyfluorides, and other related tungsten species. The usual method for removal of the chamber deposits is to open the chamber and perform a labor intensive mechanical clean, which involves the use of hydrogen peroxide (H{sub 2}O{sub 2}) and deionized (DI) water, or an in-situ fluorine-base plasma clean. The authors have investigated the use of repetitive in-situ nitrogen trifluoride (NF{sub 3}) plasma cleans during the course of operating a Genuse 8721 tungsten chemical vapor deposition reactor. The Genuse reactor has been retrofitted with self-ratchetting linear slides, which allow the wafer clamps to be extended into the NF{sub 3} plasma. They have extended the mean time between failures (MTBF) due to the use of 10 minute plasma clean every 75--100 wafers. Deposition for this process is 8,000 angstroms per wafer, using 6 deposition sites. The total tungsten deposition for a 0.5 micron tungsten plug is 4 microns, per a 25 wafer lot. Instead of a total removal of the accumulated tungsten from the chamber hardware, a partial etchback of the deposition from the wafer clamps and wafer chucks was performed. With this, sources for particles and backside deposition were eliminated. They see an increase in wafer-to-wafer uniformity, lot-to-lot repeatability, and particle reduction due to the use of frequent plasma clean. Recovery time after a plasma clean is excellent and no detrimental effects from hydrogen fluoride ``poisoning`` were seen.

Lujan, R.D.; Fleming, J.G.; Baird, J.L.; Gentry, M.S. [Sandia National Labs., Albuquerque, NM (United States). Center for Microelectronics Technologies

1994-12-31T23:59:59.000Z

170

Influence of process parameters on properties of reactively sputtered tungsten nitride thin films  

SciTech Connect

Tungsten nitride (WN{sub x}) thin films were produced by reactive dc magnetron sputtering of tungsten in an Ar-N{sub 2} gas mixture. The influence of the deposition power on the properties of tungsten nitride has been analyzed and compared with that induced by nitrogen content variation in the sputtering gas. A combined analysis of structural, electrical and optical properties on thin WN{sub x} films obtained at different deposition conditions has been performed. It was found that at an N{sub 2} content of 14% a single phase structure of W{sub 2}N films was formed with the highest crystalline content. This sputtering gas composition was subsequently used for fabricating films at different deposition powers. Optical analysis showed that increasing the deposition power created tungsten nitride films with a more metallic character, which is confirmed with resistivity measurements. At low sputtering powers the resulting films were crystalline whereas, with an increase of power, an amorphous phase was also present. The incorporation of an excess of nitrogen atoms resulted in an expansion of the W{sub 2}N lattice and this effect was more pronounced at low deposition powers. Infrared analysis revealed that in WN{sub x} films deposited at low power, chemisorbed N{sub 2} molecules did not behave as ligands whereas at high deposition power they clearly appeared as ligands around metallic tungsten. In this study, the influence of the most meaningful deposition parameters on the phase transformation reaction path was established and deposition conditions suitable for producing thermally stable and highly crystalline W{sub 2}N films were found.

Addonizio, Maria L.; Castaldo, Anna; Antonaia, Alessandro; Gambale, Emilia; Iemmo, Laura [ENEA, Portici Research Centre, Piazzale E. Fermi 1, I-80055, Portici (Italy)

2012-05-15T23:59:59.000Z

171

Comparison of the physics of Gas Tungsten Arc Welding (GTAW), Electron Beam Welding (EBW), and Laser Beam Welding (LBW)  

SciTech Connect

The physics governing the applicability and limitations of gas tungsten arc (GTA), electron beam (EB), and laser beam (LB) welding are compared. An appendix on the selection of laser welding systems is included.

Nunes, A.C. Jr.

1985-08-01T23:59:59.000Z

172

GENERATION, TRANSPORT AND DEPOSITION OF TUNGSTEN-OXIDE AEROSOLS AT 1000 C IN FLOWING AIR-STEAM MIXTURES.  

SciTech Connect

Experiments were conducted to measure the rates of oxidation and vaporization of pure tungsten rods in flowing air, steam and air-steam mixtures in laminar flow. Also measured were the downstream transport of tungsten-oxide condensation aerosols and their region of deposition, including plateout in the superheated flow tube, rainout in the condenser and ambient discharge which was collected on an array of sub-micron aerosol filters. The nominal conditions of the tests, with the exception of the first two tests, were tungsten temperatures of 1000 C, gas mixture temperatures of 200 C and wall temperatures of 150 C to 200 C. It was observed that the tungsten oxidation rates were greatest in all air and least in all steam, generally decreasing non-linearly with increasing steam mole fraction. The tungsten oxidation rates in all air were more than five times greater than the tungsten oxidation rates in all steam. The tungsten vaporization rate was zero in all air and increased with increasing steam mole fraction. The vaporization rate became maximum at a steam mole fraction of 0.85 and decreased thereafter as the steam mole fraction was increased to unity. The tungsten-oxide was transported downstream as condensation aerosols, initially flowing upwards from the tungsten rod through an 18-inch long, one-inch diameter quartz tube, around a 3.5-inch radius, 90{sup o} bend and laterally through a 24-inch horizontal run. The entire length of the quartz glass flow path was heated by electrical resistance clamshell heaters whose temperatures were individually controlled and measured. The tungsten-oxide plateout in the quartz tube was collected, nearly all of which was deposited at the end of the heated zone near the entrance to the condenser which was cold. The tungsten-oxide which rained out in the condenser as the steam condensed was collected with the condensate and weighed after being dried. The aerosol smoke which escaped the condenser was collected on the sub-micron filter assemblies. There was no aerosol generation for the case of all air, so the plateout, condensate and smoke were all zero. For the case of all steam, there was very little plateout in the superheated regions (several percent) and the rest of the aerosol was collected in the condensate from the condenser. There was no smoke discharge into the filters. For the experiments with intermediate air-steam fractions, there was some aerosol plateout, considerable aerosol in the condensate and aerosol smoke discharged from the condenser with the escaping air.

GREENE,G.A.; FINFROCK,C.C.

2001-10-01T23:59:59.000Z

173

2-M Probe At Tungsten Mountain Area (Kratt, Et Al., 2008) | Open Energy  

Open Energy Info (EERE)

Kratt, Et Al., Kratt, Et Al., 2008) Exploration Activity Details Location Tungsten Mountain Area Exploration Technique 2-M Probe Activity Date Usefulness useful DOE-funding Unknown Notes "To test if it would have been possible to find the Tungsten Mountain geothermal system with a shallow temperature survey, more than 80 2-meter-deep temperatures were recorded during a two week period in late June and early July, 2007. These measurements spanned an 8-km-long zone parallel to the range front and extended eastward from the range front up to 2 km towards the playa's edge (Figure 1). Two-meter temperatures ranged from 14.0°C up to a maximum of 26.7° C. The higher temperatures correspond to the area of exploration drilling, although anomalously high temperatures extend northeastward beyond the area of drilling. These

174

2-M Probe At Tungsten Mountain Area (Shevenell, Et Al., 2008) | Open Energy  

Open Energy Info (EERE)

Shevenell, Et Shevenell, Et Al., 2008) Exploration Activity Details Location Tungsten Mountain Area Exploration Technique 2-M Probe Activity Date Usefulness useful DOE-funding Unknown Notes Coolbaugh et al. (2007), Sladek et al. (2007), and Kratt, et al. (2008, this volume) describe a shallow temperature survey system in which temperatures can be measured quickly and inexpensively at 2 m depths. This system was tested at Desert Queen based on its structural setting and availability of thermal gradient well data obtained in the 1970's from which to make thermal anomaly comparisons. The system was subsequently used at Tungsten Mountain and Teels and Rhodes Marshes to help locate blind geothermal systems. Of the new, blind geothermal sites identified through collaboration with the minerals industry, shallow temperature surveys were

175

Thermal Gradient Holes At Tungsten Mountain Area (Shevenell, Et Al., 2008)  

Open Energy Info (EERE)

Shevenell, Et Al., 2008) Shevenell, Et Al., 2008) Exploration Activity Details Location Tungsten Mountain Area Exploration Technique Thermal Gradient Holes Activity Date Usefulness useful DOE-funding Unknown Notes Collaboration with the gold mining industry has brought two new geothermal discoveries to the attention of the geothermal community. Exploration holes at Tungsten Mountain and McGuiness Hills (Figure 1) in 2004 and 2005 encountered hot water and steam at depths of meters with fluid geothermometry indicating reservoir temperatures of 170 to 200oC. More information can be obtained from the Nevada Bureau of Mines and Geology web site (www.nbmg.unr.edu/geothermal/gtmap.pdf), and from a PowerPoint presentation titled 'Geothermal Exploration Short Stories' posted on the Geothermal Resources Council web site

176

X-ray And EUV Spectroscopy Of Highly Charged Tungsten Ions  

SciTech Connect

The Berlin EBIT has been established by the Max-Planck-Institut fuer Plasmaphysik to generate atomic physics data in support of research in the field of controlled nuclear fusion, by measuring the radiation from highly charged ions in the x-ray, extreme ultraviolet and visible spectral ranges and providing valuable diagnostics for high temperature plasmas. In future fusion devices, for example ITER, currently being constructed at Cadarache, France, the plasma facing components will be armored with high-Z materials, most likely tungsten, due to the favorable properties of this element. At the same time the tremendous radiation cooling of these high-Z materials represents a threat to fusion and obliges one to monitor carefully the radiation. With EBIT a selected ensemble of ions in specific charge states can be produced, stored and excited for spectroscopic investigations. Employing this technique, we have for example resolved the wide structure observed around 5 nm at the ASDEX Upgrade tokamak as originating from E1-transitions into the open 4d shell of tungsten ions in charge states 25+ to 37+ producing a band-like emission pattern. Further, these ions emit well-separated M1 lines in the EUV range around 65 nm suitable for plasma diagnostics. Kr-like to Cr-like tungsten ions (38+ to 50+) show strong soft-x-ray lines in the range 0.5 to 2 and 5 to 15 nm. Lines of even higher charged tungsten ions, up to Ne-like W{sup 64+}, abundant in the core plasma of present and future fusion test devices, have been investigated with high resolution Bragg-crystal spectroscopy at 0.13 nm. Recently, x-ray spectroscopic measurements of the dielectronic recombination LMn resonances of W{sup 60+} to W{sup 67+} ions have been preformed and compare well with atomic structure calculations.

Biedermann, Christoph; Radtke, Rainer [Max-Planck-Institut fuer Plasmaphysik, EURATOM Association, 17491 Greifswald, and Institut fuer Physik der Humboldt-Universitaet zu Berlin, Arbeitsgruppe Plasmaphysik, Newtonstr 15, 12489 Berlin (Germany)

2009-09-10T23:59:59.000Z

177

Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy  

DOE Patents (OSTI)

The present invention is directed to a rapid nondestructive method for determining the extent of strain hardening in an article of tungsten-nickel-iron alloy. The method comprises saturating the article with a magnetic field from a permanent magnet, measuring the magnetic flux emanating from the article, comparing the measurements of the magnetic flux emanating from the article with measured magnetic fluxes from similarly shaped standards of the alloy with known amounts of strain hardening to determine the hardness.

Wallace, Steven A. (Knoxville, TN)

1984-01-01T23:59:59.000Z

178

Method for determining the hardness of strain hardening articles of tungsten-nickel-iron alloy  

DOE Patents (OSTI)

The present invention is directed to a rapid nondestructive method for determining the extent of strain hardening in an article of tungsten-nickel-iron alloy. The method comprises saturating the article with a magnetic field from a permanent magnet, measuring the magnetic flux emanating from the article, comparing the measurements of the magnetic flux emanating from the article with measured magnetic fluxes from similarly shaped standards of the alloy with known amounts of strain hardening to determine the hardness.

Wallace, S.A.

1981-07-29T23:59:59.000Z

179

ACHIEVING THE REQUIRED COOLANT FLOW DISTRIBUTION FOR THE ACCELERATOR PRODUCTION OF TRITIUM (APT) TUNGSTEN NEUTRON SOURCE  

SciTech Connect

The Accelerator Production of Tritium neutron source consists of clad tungsten targets, which are concentric cylinders with a center rod. These targets are arranged in a matrix of tubes, producing a large number of parallel coolant paths. The coolant flow required to meet thermal-hydraulic design criteria varies with location. This paper describes the work performed to ensure an adequate coolant flow for each target for normal operation and residual heat-removal conditions.

D. SIEBE; K. PASAMEHMETOGLU

2000-11-01T23:59:59.000Z

180

Control of Gas Tungsten Arc welding pool shape by trace element addition to the weld pool  

DOE Patents (OSTI)

An improved process for Gas Tungsten Arc welding maximizes the depth/width ratio of the weld pool by adding a sufficient amount of a surface active element to insure inward fluid flow, resulting in deep, narrow welds. The process is especially useful to eliminate variable weld penetration and shape in GTA welding of steels and stainless steels, particularly by using a sulfur-doped weld wire in a cold wire feed technique.

Heiple, C.R.; Burgardt, P.

1984-03-13T23:59:59.000Z

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


181

Tungsten oxide ( WO 3 ) thin films for application in advanced energy systems  

Science Conference Proceedings (OSTI)

Inherent processes in coal gasification plants produce hazardous hydrogen sulfide ( H 2 S ) which must be continuously and efficiently detected and removed before the fuel is used for power generation. An attempt has been made in this work to fabricate tungsten oxide ( WO 3 ) thin films by radio-frequency reactive magnetron-sputter deposition. The impetus being the use of WO 3 films for H 2 S sensors in coal gasification plants. The effect of growth temperature

S. K. Gullapalli; R. S. Vemuri; F. S. Manciu; J. L. Enriquez; C. V. Ramana

2010-01-01T23:59:59.000Z

182

Electrical conductivities of aluminum, copper, and tungsten observed by an underwater explosion  

SciTech Connect

Conductivities of dense aluminum, copper, and tungsten are evaluated using exploding wire discharges in water. Evolutions of the radius and the electrical resistance of exploding wire are measured together with direct pyrometric estimation of the temperature. The conductivities are evaluated based on the measurements and their density dependence is compared with theoretical predictions at a fixed temperature. The results indicate that regardless of materials, the conductivity has a minimum around 3% of solid density at temperature of 5000 K.

Sasaki, Toru [Department of Electrical Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka, Niigata 940-2188 (Japan); Nakajima, Mitsuo; Kawamura, Tohru; Horioka, Kazuhiko [Department of Energy Sciences, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama 226-8502 (Japan)

2010-08-15T23:59:59.000Z

183

Measurements of the Time Structure of Hadronic Showers in a Scintillator-Tungsten HCAL  

E-Print Network (OSTI)

For calorimeter applications requiring precise time stamping, the time structure of hadronic showers in the detector is a crucial issue. This applies in particular to detector concepts for CLIC, where a hadronic calorimeter with tungsten absorbers is being considered to achieve a high level of shower containment while satisfying strict space constraints. The high hadronic background from gamma gamma to hadrons processes at 3 TeV in combination with the 2 GHz bunch crossing frequency at CLIC requires good time stamping in the detectors. To provide first measurements of the time structure in a highly granular scintillator-tungsten calorimeter, T3B, a dedicated timing experiment, was installed behind the last layer of the CALICE WHCAL prototype, a 30 layer tungsten scintillator calorimeter. T3B consists of 15 small scintillator cells with embedded silicon photomultipliers, read out with fast digitizers over a time window of 2.4 us, and provides detailed measurements of the time structure of the signal. The offline data reconstruction performs an automatic gain calibration using noise events recorded between physics triggers and allows the determination of the arrival time of each photon at the photon sensor. The T3B setup, its calibration and data reconstruction, as well as first results of the time structure of the calorimeter response for 10 GeV pions recorded at the CERN PS confronted with Geant4 simulations using different physics lists are discussed.

Frank Simon; for the CALICE Collaboration

2011-09-14T23:59:59.000Z

184

K. Toyota et al.: Photochemistry of VOCs and halogens in the MBL (Supplement) 1 A supplement to "A box model study on photochemical interactions  

E-Print Network (OSTI)

K. Toyota et al.: Photochemistry of VOCs and halogens in the MBL (Supplement) 1 A supplement to "A boundary layer" by K. Toyota et al. K. Toyota1,* , Y. Kanaya1 , M. Takahashi1,2 , and H. Akimoto1 1) Correspondence to: K. Toyota (ktoyota@yorku.ca) ClCH2CH2OO + CH3OO 0.44 ? (ClCH2CH2O + CH3O + O2) + 0.28 ? (Cl

Meskhidze, Nicholas

185

Study of the interactions of pions in the CALICE silicon-tungsten calorimeter prototype  

E-Print Network (OSTI)

A prototype silicon-tungsten electromagnetic calorimeter for an ILC detector was tested in 2007 at the CERN SPS test beam. Data were collected with electron and hadron beams in the energy range 8 to 80 GeV. The analysis described here focuses on the interactions of pions in the calorimeter. One of the main objectives of the CALICE program is to validate the Monte Carlo tools available for the design of a full-sized detector. The interactions of pions in the Si-W calorimeter are therefore confronted with the predictions of various physical models implemented in the GEANT4 simulation framework.

C. Adloff; Y. Karyotakis; J. Repond; J. Yu; G. Eigen; Y. Mikami; N. K. Watson; J. A. Wilson; T. Goto; G. Mavromanolakis; M. A. Thomson; D. R. Ward; W. Yan; D. Benchekroun; A. Hoummada; Y. Khoulaki; J. Apostolakis; A. Ribon; V. Uzhinskiy; M. Benyamna; C. Crloganu; F. Fehr; P. Gay; G. C. Blazey; D. Chakraborty; A. Dyshkant; K. Francis; D. Hedin; J. G. Lima; V. Zutshi; J. -Y. Hostachy; K. Krastev; L. Morin; N. D'Ascenzo; U. Cornett; D. David; R. Fabbri; G. Falley; K. Gadow; E. Garutti; P. Gttlicher; T. Jung; S. Karstensen; A. -I. Lucaci-Timoce; B. Lutz; N. Meyer; V. Morgunov; M. Reinecke; F. Sefkow; P. Smirnov; A. Vargas-Trevino; N. Wattimena; O. Wendt; N. Feege; M. Groll; J. Haller; R. -D. Heuer; S. Morozov; S. Richter; J. Samson; A. Kaplan; H. -Ch. Schultz-Coulon; W. Shen; A. Tadday; B. Bilki; E. Norbeck; Y. Onel; E. J. Kim; G. Kim; D-W. Kim; K. Lee; S. C. Lee; K. Kawagoe; Y. Tamura; P. D. Dauncey; A. -M. Magnan; H. Yilmaz; O. Zorba; V. Bartsch; M. Postranecky; M. Warren; M. Wing; M. G. Green; F. Salvatore; M. Bedjidian; R. Kieffer; I. Laktineh; M. -C. Fouz; D. S. Bailey; R. J. Barlow; M. Kelly; R. J. Thompson; M. Danilov; E. Tarkovsky; N. Baranova; D. Karmanov; M. Korolev; M. Merkin; A. Voronin; A. Frey; S. Lu; K. Seidel; F. Simon; C. Soldner; L. Weuste; J. Bonis; B. Bouquet; S. Callier; P. Cornebise; Ph. Doublet; M. Faucci Giannelli; J. Fleury; H. Li; G. Martin-Chassard; F. Richard; Ch. de la Taille; R. Poeschl; L. Raux; N. Seguin-Moreau; F. Wicek; M. Anduze; V. Boudry; J-C. Brient; G. Gaycken; D. Jeans; P. Mora de Freitas; G. Musat; M. Reinhard; A. Roug; M. Ruan; J-Ch. Vanel; H. Videau; K-H. Park; J. Zacek; J. Cvach; P. Gallus; M. Havranek; M. Janata; M. Marcisovsky; I. Polak; J. Popule; L. Tomasek; M. Tomasek; P. Ruzicka; P. Sicho; J. Smolik; V. Vrba; J. Zalesak; B. Belhorma; M. Belmir; S. W. Nam; I. H. Park; J. Yang; Jong-Seo Chai; Jong-Tae Kim; Geun-Bum Kim; J. Kang; Y. -J. Kwon

2010-04-28T23:59:59.000Z

186

Parametric Studies Of Weld Quality Of Tungsten Inert Gas Arc Welding Of Stainless Steel  

Science Conference Proceedings (OSTI)

Effect of current and gas flow rate on quality of weld in tungsten inter gas arc welding of austenitic stainless steel has been studied in the present work through experiments and analyses. Butt welded joints have been made by using several levels of current and gas flow rate. The quality of the weld has been evaluated in terms of ultimate and breaking strengths of the welded specimens. The observed data have been interpreted, discussed and analyzed by using Grey--Taguchi methodology. Optimum parametric setting has been predicted and validated as well.

Kumar Pal, Pradip; Nandi, Goutam; Ghosh, Nabendu [Mechanical Engineering Department, Jadavpur University, Kolkata-700032 (India)

2011-01-17T23:59:59.000Z

187

Gallium arsenide thin films on tungsten/graphite substrates. Phase II. Quarterly project report No. 2, December 1, 1977-February 28, 1978  

DOE Green Energy (OSTI)

The objectives of this contract are to investigate thin films of gallium arsenide on tungsten/graphite substrates and to prepare solar cells with an AM1 efficiency of 6% or higher by August 1978. Efforts during this quarter have been directed to: (1) the deposition and characterization of gallium arsenide films on tungsten/graphite substrates by the arsenic and arsine processes, (2) the construction and operation of an apparatus for the deposition of titanium dioxide films, and (3) the fabrication and evaluation of MOS solar cells on tungsten/graphite substrates. Gallium arsenide films have been deposited on tungsten/graphite substrates by the reaction of gallium, hydrogen chloride, and arsenic in a hydrogen flow. The structural and electrical properties of these films are very similar to those obtained by the arsine process. The initial stage of the deposition of gallium arsenide films on tungsten/graphite substrates has been investigated by the scanning electron microscopy.

Chu, S.S.

1978-03-01T23:59:59.000Z

188

A Conceptual Multi-Megawatt System Based on a Tungsten CERMET Reactor  

Science Conference Proceedings (OSTI)

Abstract. A conceptual reactor system to support Multi-Megawatt Nuclear Electric Propulsion is investigated within this paper. The reactor system consists of a helium cooled Tungsten-UN fission core, surrounded by a beryllium neutron reflector and 13 B4C control drums coupled to a high temperature Brayton power conversion system. Excess heat is rejected via carbon reinforced heat pipe radiators and the gamma and neutron flux is attenuated via segmented shielding consisting of lithium hydride and tungsten layers. Turbine inlet temperatures ranging from 1300 K to 1500 K are investigated for their effects on specific powers and net electrical outputs ranging from 1 MW to 100 MW. The reactor system is estimated to have a mass, which ranges from 15 Mt at 1 MWe and a turbine inlet temperature of 1500 K to 1200 Mt at 100 MWe and a turbine temperature of 1300 K. The reactor systems specific mass ranges from 32 kg/kWe at a turbine inlet temperature of 1300 K and a power of 1 MWe to 9.5 kg/kW at a turbine temperature of 1500 K and a power of 100 MWe.

Jonathan A. Webb; Brian Gross

2011-02-01T23:59:59.000Z

189

Manual gas tungsten arc (dc) and semiautomatic gas metal arc welding of 6XXX aluminum. Welding procedure specification  

SciTech Connect

Procedure WPS-1009 is qualified under Section IX of the ASME Boiler and Pressure Vessel Code for manual gas tungsten arc (DC) and semiautomatic gas metal arc (DC) welding of aluminum alloys 6061 and 6063 (P-23), in thickness range 0.187 to 2 in.; filler metal is ER4043 (F-23); shielding gases are helium (GTAW) and argon (GMAW).

Wodtke, C.H.; Frizzell, D.R.; Plunkett, W.A.

1985-08-01T23:59:59.000Z

190

Chapter 30: Quantum Physics 9. The tungsten filament in a standard light bulb can be considered a blackbody radiator.  

E-Print Network (OSTI)

. 1 Chapter 30: Quantum Physics 9. The tungsten filament in a standard light bulb can be considered frequency is that of infrared electromagnetic radiation, the light bulb radiates more energy in the infrared. The light from a flashlight can be considered as the emission of many photons of the same frequency

Kioussis, Nicholas

191

Glossary - U.S. Energy Information Administration (EIA)  

U.S. Energy Information Administration (EIA)

Included in this category are the familiar screw-in light bulbs, as well as somewhat more efficient lamps, such as tungsten halogen lamps, reflector ...

192

NIST Goniophotometer for specular gloss calibrations  

Science Conference Proceedings (OSTI)

... The light source is a quartz-tungsten-halogen incandescent lamp rated at ... instrument but also to a considerable extent on the primary gloss standard ...

2012-10-02T23:59:59.000Z

193

Thermal Gradient Holes At Tungsten Mountain Area (Kratt, Et Al., 2008) |  

Open Energy Info (EERE)

Kratt, Et Al., 2008) Kratt, Et Al., 2008) Exploration Activity Details Location Tungsten Mountain Area Exploration Technique Thermal Gradient Holes Activity Date Usefulness useful DOE-funding Unknown Notes twenty-three gold exploration holes were drilled by Newcrest Resources, Inc. during 2005 and 2006 along the range front. These holes approached or exceeded 300 m in depth and all holes encountered hot water and/or steam. Despite the high temperatures encountered at relatively shallow depths, there are no active geothermal features such as hot springs or steam vents at the surface. The presence of small outcrops of argillic alteration containing anomalous gold attracted the interest of exploration geologists. References Christopher Kratt, Mark Coolbaugh, Chris Sladek, Rick Zehner, Robin

194

Causal Factors of Weld Porosity in Gas Tungsten Arc Welding of Powder Metallurgy Produced Titanium Alloys  

Science Conference Proceedings (OSTI)

ORNL undertook an investigation using gas tungsten arc (GTA) welding on consolidated powder metallurgy (PM) titanium (Ti) plate, to identify the causal factors behind observed porosity in fusion welding. Tramp element compounds of sodium and magnesium, residual from the metallothermic reduction of titanium chloride used to produce the titanium, were remnant in the starting powder and were identified as gas forming species. PM-titanium made from revert scrap where sodium and magnesium were absent, showed fusion weld porosity, although to a lesser degree. We show that porosity was attributable to hydrogen from adsorbed water on the surface of the powders prior to consolidation. The removal / minimization of both adsorbed water on the surface of titanium powder and the residues from the reduction process prior to consolidation of titanium powders, are critical to achieve equivalent fusion welding success similar to that seen in wrought titanium produced via the Kroll process.

Muth, Thomas R [ORNL; Yamamoto, Yukinori [ORNL; Frederick, David Alan [ORNL; Contescu, Cristian I [ORNL; Chen, Wei [ORNL; Lim, Yong Chae [ORNL; Peter, William H [ORNL; Feng, Zhili [ORNL

2013-01-01T23:59:59.000Z

195

Nanostructuring of molybdenum and tungsten surfaces by low-energy helium ions  

Science Conference Proceedings (OSTI)

The formation of metallic nanostructures by exposure of molybdenum and tungsten surfaces to high fluxes of low energy helium ions is studied as a function of the ion energy, plasma exposure time, and surface temperature. Helium plasma exposure leads to the formation of nanoscopic filaments on the surface of both metals. The size of the helium-induced nanostructure increases with increasing surface temperature while the thickness of the modified layer increases with time. In addition, the growth rate of the nanostructured layer also depends on the surface temperature. The size of the nanostructure appears linked with the size of the near-surface voids induced by the low energy ions. The results presented here thus demonstrate that surface processing by low-energy helium ions provides an efficient route for the formation of porous metallic nanostructures.

De Temmerman, Gregory; Bystrov, Kirill; Zielinski, Jakub J.; Balden, Martin; Matern, Gabriele; Arnas, Cecile; Marot, Laurent [FOM Institute DIFFER, Ducth Institute For Fundamental Energy Research, Association EURATOM-FOM, Trilateral Euregio Cluster, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); Max Planck Institute for Plasma Physics, EURATOM Association, 85748 Garching (Germany); Laboratoire PIIM, CNRS/Aix-Marseille Universit, 13397 Marseille (France); Department of Physics, University of Basel, Basel, CH-4056 (Switzerland)

2012-07-15T23:59:59.000Z

196

Employee Spotlight: Matt Kasa | Argonne National Laboratory  

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

Matt Kasa Matt Kasa Share Browse By - Any - Energy -Energy efficiency --Vehicles ---Alternative fuels ---Automotive engineering ---Diesel ---Electric drive technology ---Hybrid & electric vehicles ---Powertrain research --Building design ---Construction --Manufacturing -Energy sources --Renewable energy ---Bioenergy ---Solar energy --Fossil fuels ---Natural Gas --Nuclear energy ---Nuclear energy modeling & simulation ---Nuclear fuel cycle ---Reactors -Energy usage --Energy storage ---Batteries ----Lithium-ion batteries ----Lithium-air batteries --Electricity transmission --Smart Grid Environment -Biology --Computational biology --Environmental biology ---Metagenomics ---Terrestrial ecology --Molecular biology ---Interventional biology -Environmental science & technology --Atmospheric

197

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

From the mid-2000s when a Golden Age was underway, through two years of losses and concerns about 'peak oil,' to today's unique crude supply situation in...

198

Employee Spotlight: Alex Martinson | Argonne National Laboratory  

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

energy ---Bioenergy ---Solar energy --Fossil fuels ---Natural Gas --Nuclear energy ---Nuclear energy modeling & simulation ---Nuclear fuel cycle ---Reactors -Energy...

199

TMS 2014: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

... August 2013 JOM article, Cold War Thriller Brings Classroom Theory to Life. ... a real-life espionage tale of a lost Soviet nuclear submarine and one of the most ... lift industry environmental and energy efficiency performance to that required...

200

TMS 2014: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

Time: 8:30 8:35am ... Speculative examples will be promoted for addressing the energy and operating inefficiencies that persist in smelting. After 80 ... has resulted in a major reduction in operating costs and often (but not always) capital cost.

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Spotlight: The Great Data Center Debate  

Science Conference Proceedings (OSTI)

Handing over your data to a cloud provider may appear almost irresistible from a cost perspective, but what about the security and compliance concerns? Kevin Townsend examines both sides of the argument

Kevin Townsend

2011-01-01T23:59:59.000Z

202

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions ...  

Science Conference Proceedings (OSTI)

Topic: Changes in Global Oil Refining and Its Impact on Anode Quality ... This was driven by crude oil changes at a refinery supplying one of the primary cokes ...

203

In this issue. . . Linguistics Alum Spotlight  

E-Print Network (OSTI)

Khinaliq is, quite literally, the end of the road. Isolated in the Caucasus Mountains of Azerbaijan to Khinaliq is almost like going home. A native of Georgia who immigrated to the United States at the age of 16, Khvtisiashvili feels a personal connection with the Caucasus nations. Now, she is returning

Utah, University of

204

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

His career included work on the Manhattan Project, work at Bell Labs and then, since the early 1950s, at Northwestern University. He was one of the organizers...

205

North Slope action holds West Coast spotlight  

Science Conference Proceedings (OSTI)

The first oil from a North Slope reservoir outside Prudhoe Bay will begin flowing next year at rate of 80,000 bpd from Kuparuk field now under development by Atlantic Richfield Co. west of Prudhoe Bay. Just north of the Kuparuk development, Conoco Inc. has found a commercial reservoir in the Milne Point unit and will be drilling confirmation and delineation wells later this year and in 1982. Another area which very likely will be developed for production is located northeast of Prudhoe Bay, where Sohio Alaska Petroleum Co. has announced discoveries in 2 Sag Delta wells. In California's San Joaquin Valley, 3 Kern County fields - South Belridge, Elk Hills, and Lost Hills - are the sites of intensive drilling. Seven rigs are working in the Santa Barbara Channel, 3 of them developing known fields from permanent platforms.

Wilson, H.M.

1981-05-25T23:59:59.000Z

206

Municipal spotlight: Working together in Northern Virginia  

Science Conference Proceedings (OSTI)

The Northern Virginia region is one of the nation`s liveliest centers of commerce as measured by job creation, new business formation, residential and commercial construction, and retail sales. The region also has one of the most advanced integrated waste management programs. In 1994, more than 1.6 million tons of municipal solid (MSW) were generated in the Northern Virginia region. Of that amount, 1 million tons were recovered as energy and more than 500,000 tons were landfilled. Additionally, more than 500,000 tons were recycled. The jurisdictions in this region have built an extensive network of solid waste management programs that are handled on the local government level, through cooperative programs, and through implementation of unique interjurisdictional agreements. These programs are arranged in the following hierarchy: source reduction, composting, recycling, energy recovery, and landfilling. This article provides a description of how this hierarchy is implemented in the region.

Arner, R.

1995-10-01T23:59:59.000Z

207

In The Spotlight | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure...

208

Lab Spotlight: Lawrence Livermore National Laboratory  

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

Lawrence Livermore National Laboratory Designing Biocompatible Microelectronics Pioneering work with polymer-based microfabrication methods at Lawrence Livermore National...

209

Spotlight on Seattle, Washington: Community Partnerships Work...  

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

that they will both use to manage and monitor their programs-further minimizing the learning curve and leveraging their funds. Engage Partners Early and Often To Expand...

210

Lab Spotlight: California Institute of Technology  

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

of Energy's team are addressing this challenge by developing and testing multivariate optimization algorithms based on evolutionary principles. These algorithms are used to...

211

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

Sponsorship Information ... or even analysis, of bath chemistry becomes increasingly problematic. ... How the markets (and decisions) have changed over the past decade will be examined, and scenarios of what's ahead will be covered

212

TMS 2013: Annual Meeting & Exhibition - Spotlight Sessions  

Science Conference Proceedings (OSTI)

He also led the expansion of Battelle's operations into China, Japan, Korea, and India and the development of partnerships with the private sector in those...

213

Solar Decathlon Technology Spotlight: Structural Insulated Panels...  

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

20, 2011 - 7:13am Addthis These structural insulated panels consist of foam insulation sandwiched between oriented strand boards. (Courtesy of Michael Bacchler) These...

214

Employee Spotlight: Emily Zvolanek | Argonne National Laboratory  

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

design ---Construction --Manufacturing -Energy sources --Renewable energy ---Bioenergy ---Solar energy --Fossil fuels ---Natural Gas --Nuclear energy ---Nuclear energy modeling &...

215

Employee Spotlight: Michael Rosenow | Argonne National Laboratory  

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

design ---Construction --Manufacturing -Energy sources --Renewable energy ---Bioenergy ---Solar energy --Fossil fuels ---Natural Gas --Nuclear energy ---Nuclear energy modeling &...

216

Relativistic configuration-interaction calculations of the n=3-3 transition energies in highly charged tungsten ions  

SciTech Connect

A large-scale relativistic configuration-interaction calculation of the n=3-3 transition energies for Ne- to Ar-like tungsten is carried out. The calculation is based on the relativistic no-pair Hamiltonian and uses finite B-spline orbitals in a cavity as basis functions. Quantum electrodynamic and mass polarization corrections are also included. Results are compared with other theories and with experiment, and are generally found to be more reliable than previous theoretical predictions.

Chen, M. H.; Cheng, K. T. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2011-07-15T23:59:59.000Z

217

Multiphysics Design and Simulation of a Tungsten-Cermet Nuclear Thermal Rocket  

E-Print Network (OSTI)

The goal of this research is to apply modern methods of analysis to the design of a tungsten-cermet Nuclear Thermal Rocket (NTR) core. An NTR is one of the most viable propulsion options for enabling piloted deep-space exploration. Concerns over fuel safety have sparked interest in an NTR core based on tungsten-cermet fuel. This work investigates the capability of modern CFD and neutronics codes to design a cermet NTR, and makes specific recommendations for the configuration of channels in the core. First, the best CFD practices available from the commercial package Star-CCM+ are determined by comparing different modeling options with a hot-hydrogen flow experiment. Next, through grid convergence and sensitivity studies, numerical uncertainty is shown to be a small contributor to overall uncertainty; while fuel thermal conductivity, hydrogen specific heat, and fission energy deposition are found to have a large impact on simulation uncertainty. The model-form error is then estimated by simulation of a NERVA fuel element from an NRX-A6 engine test, where the peak temperature matches measured data to within 2.2%. Using a combination of Star-CCM+ and MCNP for neutronics, typical uncertainties are estimated at 3% for predicting fuel temperature, 2% for hydrogen temperature, and 5% for pressure. The second part uses the aforementioned analysis methods in a parametric study to determine what coolant channel size and distribution is optimum for a 10 klbf-thrust cermet NTR core. By varying the channel diameter and pitch-to-diameter ratio (p/d), it is found that a diameter of 0.12 cm with a p/d of 1.8 results in the lightest core with a peak temperature of 2850 K. The study also shows that element-by-element mass flow rate zoning is the best method for handling radial power peaking. In addition, a detailed simulation of a cermet design developed at the Argonne National Laboratory shows that modifications to the historical fuel element design are required to avoid overheating. The final part investigates the ability of Star-CCM+ to model fuel element failure modes. Through a combination of uncertainty quantification and a parametric analysis, this thesis ultimately lays a groundwork for future detailed design of cermet NTR fuel elements.

Appel, Bradley

2012-08-01T23:59:59.000Z

218

,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen"  

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

B39. Lighting Equipment, Floorspace, 1999" B39. Lighting Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Lit Buildings","Lighting Equipment (more than one may apply)" ,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen" "All Buildings ................",67338,64321,38156,60344,20666,19223,17926 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,5859,2946,5154,738,245,600 "5,001 to 10,000 ..............",8238,7464,4047,6722,1108,663,991 "10,001 to 25,000 .............",11153,10393,6055,9815,1759,1701,1996 "25,001 to 50,000 .............",9311,9053,5004,8344,2296,2224,1611

219

FINAL FOCUS ION BEAM INTENSITY FROM TUNGSTEN FOIL CALORIMETER AND SCINTILLATOR IN NDCX-I  

SciTech Connect

Laboratory high energy density experiments using ion beam drivers rely upon the delivery of high-current, high-brightness ion beams with high peak intensity onto targets. Solid-state scintillators are typically used to measure the ion beam spatial profile but they display dose-dependent degradation and aging effects. These effects produce uncertainties and limit the accuracy of measuring peak beam intensities delivered to the target. For beam tuning and characterizing the incident beam intensity, we have developed a cross-calibrating diagnostic suite that extends the upper limit of measurable peak intensity dynamic range. Absolute intensity calibration is obtained with a 3 {micro}m thick tungsten foil calorimeter and streak spectrometer. We present experimental evidence for peak intensity measures in excess of 400 kW/cm{sup 2} using a 0.3 MV, 25 mA, 5-20 {micro}sec K{sup +1} beam. Radiative models and thermal diffusion effects are discussed because they affect temporal and spatial resolution of beam intensity profiles.

Lidia, S.M.; Bieniosek, F.; Henestroza, E.; Ni, P.; Seidl, P.

2010-04-30T23:59:59.000Z

220

Plasma-sprayed semiconductor electrodes: Photoelectrochemical characterization and NH sub 3 photoproduction by substoichiometric tungsten oxides  

Science Conference Proceedings (OSTI)

Two substoichiometric tungsten oxide coatings have been obtained by plasma spray of WO{sub 3} powder on Ti substrates. The films are 40 {plus minus} 20 {mu}m thick and are yellow (WO{sub 2.99}) or dark blue (WO{sub 2.97}). WO{sub 2.99} coatings show a highly textured surface with a specific area 27.9 times the geometrical one. X-ray diffraction pattern reveals that their structure is a mixture of monoclinic and triclinic phases. The yellow films have been characterized photoelectrochemically in regenerative cells by using O{sub 2}/H{sub 2}O redox at pH 2.0. Under anodic polarization of 1.5 V (SCE) their quantum yield is between 10% and 20% in the wavelength range comprised between 270 and 430 nm with an indirect bandgap of 2.55 eV and a flatband potential of {minus}0.1 V. WO{sub 2.99} films have been tested for NH{sub 3} photoproduction.

Ladouceur, M.; Dodelet, J.P. (INRS-Energie, Varennes, Quebec (Canada)); Tourillon, G. (Universite Paris-Sud, Orsay (France)); Parent, L.; Dallaire, S. (IGM, Boucherville, Quebec (Canada))

1990-05-31T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Development of Monte Carlo Simulation Code to Model Behavior of Hydrogen Isotopes Loaded into Tungsten Containing Vacancies  

DOE Green Energy (OSTI)

The behavior of hydrogen isotopes implanted into tungsten containing vacancies was simulated using a Monte Carlo technique. The correlations between the distribution of implanted deuterium and fluence, trap density and trap distribution were evaluated. Throughout the present study, qualitatively understandable results were obtained. In order to improve the precision of the model and obtain quantitatively reliable results, it is necessary to deal with the following subjects: (1) how to balance long-time irradiation processes with a rapid diffusion process, (2) how to prevent unrealistic accumulation of hydrogen, and (3) how to model the release of hydrogen forcibly loaded into a region where hydrogen densely exist already.

T. Oda; M. Shimada; K. Zhang; P. Calderoni; Y. Oya; M. Sokolov; R. Kolasinski

2011-11-01T23:59:59.000Z

222

Effects of Tungsten Oxide Addition on the Electrochemical Performance of Nanoscale Tantalum Oxide-Based Electrocatalysts for Proton Exchange Membrane PEM Fuel Cells  

Science Conference Proceedings (OSTI)

In the present study, the properties of a series of non-platinum based nanoscale tantalum oxide/tungsten oxide-carbon composite catalysts was investigated for potential use in catalyzing the oxygen reduction reaction (ORR) on the cathode side of a PEM fuel cell membrane electrode assembly. Electrochemical performance was measured using a half-cell test set up with a rotating disc electrode and compared with a commercial platinum-on-carbon (Pt/C) catalyst. Overall, all of the oxide-based composite catalysts exhibit high ORR on-set potentials, comparable to that of the baseline Pt/C catalyst. The addition of tungsten oxide as a dopant to tantalum oxide greatly improved mass specific current density. Maximum performance was achieved with a catalyst containing 32 mol% of tungsten oxide, which exhibited a mass specific current density ~8% that of the Pt/C catalyst at 0.6 V vs. the normal hydrogen electrode (NHE) and ~35% that of the Pt/C catalyst at 0.2 V vs. NHE. Results from X-ray photoelectron spectroscopy analysis indicated that the tungsten cations in the composite catalysts exist in the +6 oxidation state, while the tantalum displays an average valence of +5, suggesting that the addition of tungsten likely creates an oxygen excess in the tantalum oxide structure that influences its oxygen absorption kinetics. When the 32mol% tungsten doped catalyst loading on the working electrode was increased to five times that of the original loading (which was equivalent to that of the baseline Pt/C catalyst), the area specific current density improved four fold, achieving an area specific current density ~35% that of the Pt/C catalyst at 0.6 V vs. NHE.

Oh, Tak Keun; Kim, Jin Yong; Shin, Yongsoon; Engelhard, Mark H.; Weil, K. Scott

2011-08-01T23:59:59.000Z

223

Influence of substrate properties and annealing temperature on the stress state of magnetron sputtered tungsten thin films  

SciTech Connect

The influence of substrate properties and annealing temperature on the stress state of tungsten thin films deposited by dc reactive magnetron sputtering was studied using 310 steel (AISI), Fecralloy registered and Invar registered substrates. Besides elemental tungsten, only residual amounts of contamination elements (O, C, Ar, etc.) were detected by electron probe microanalysis. Only the {alpha}-W crystalline structure, with a preferential <110> orientation, was detected in all the films by x-ray diffraction. The highest lattice parameters were measured for the films deposited on 310 steel substrates, while the smallest values were obtained for the films deposited on Invar registered substrates. These results are closely related to the thermal expansion coefficients of the substrates. All the as-deposited films were in a compressive stress state independent of the substrate type (-3 GPa for 310 steel and Fecralloy registered substrates and -2 GPa for Invar registered substrates). The residual compressive stresses of the films deposited on Fecralloy registered substrates strongly decrease with annealing temperatures up to {approx_equal}-8 GPa at 1175 K. This result shows that the measured compressive stresses are not real, and they are a direct consequence of plastic deformation of the substrate. On the contrary, the compressive stresses measured in the films deposited on Invar registered and 310 steel substrates are real as plastic deformation of the substrates is not observed.

Oliveira, J. C.; Cavaleiro, A. [Grupo de Materiais e Engenharia de Superficies, ICEMS, Departamento de Engenharia Mecanica, Universidade de Coimbra, Polo II, Pinhal de Marrocos, 3030 Coimbra (Portugal)

2006-11-15T23:59:59.000Z

224

Development of Uranium Dioxide - Tungsten Cermet fuel Specimens for Thermionic Applications  

DOE Green Energy (OSTI)

The Lewis Research Center of the National Aeronautics and Space Administration initiated a project at Battelle Memorial Institute for the purpose of fabricating clad fuel pellet containment vessel assemblies. These assemblies house clad fuel pellets containing enriched fuel. Irradiation studies of these assemblies in the NASA Plum Brook Reactor will provide data required for the desigi of thermionic converter reactors being considered by NASA. Three major objectives were defined at the initiation of this project at Battelle. These were (1) to provide containment vessel assemblies for irradiation studies, (2) to identify the best fuel dispersion/cladding combination for the fueled pellets, and (3) to identify and optimize the most promising fabrication technique to the extent necessary to provide reproducible specimens. In addition to these major objectives, other goals were defined in relation to supporting studies required for the successful conclusion of this program. The approach for accomplishing these objectives involved the cooperation of various research and research support groups at Battelle. These groups contributed to the overall program by involvement in the following areas: (1) Preparation or procurement of various types of UO{sub 2} fuel particles; (2) Application of tungsten coating to the fuel particles; (3) Development of various powder-consolidation techniques for the fuel form including use of explosive methods and hot isostatic pressing; (4) Selection and evaluation of high-temperature claddings for the fuel form; (5) Development of techniques for cladding application to the fuel form; (6) Evaluation of candidate systems by thermal cycling; (7) Fabrication of irradiation containment vessels and the associated components; and (8) Conduction of appropriate supporting studies associated with welding and brazing of the containment vessel components. The objectives of this program were accomplished to the extent that two clad fuel pellet containment vessel assemblies were completed and forwarded to NASA for irradiation testing. In conjunction with this effort, a compatible fuel-cladding system was developed for the clad fuel pellet as well as a fabrication process. In addition'to the accomplishment of these major goals, other valuable information relating to the fabrication and assembly of the containment vessel components was developed.

Gripshover, P.J.; Peterson, J.H.

1968-07-01T23:59:59.000Z

225

Multiscale Modeling of Grain Boundary Segregation and Embrittlement in Tungsten for Mechanistic Design of Alloys for Coal Fired Plants  

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

Fairbanks, AK * Morgantown, WV * Pittsburgh, PA * Sugar Land, TX Fairbanks, AK * Morgantown, WV * Pittsburgh, PA * Sugar Land, TX Website: www.netl.doe.gov Customer Service: 1-800-553-7681 Multiscale Modeling of Grain Boundary Segregation and Embrittlement in Tungsten for Mechanistic Design of Alloys for Coal Fired Plants Background The Department of Energy (DOE) National Energy Technology Laboratory (NETL) University Coal Research (UCR) Program seeks to further develop the understanding of coal utilization. Since the program's inception in 1979, its primary objectives have been to improve our understanding of the chemical and physical processes involved in the conversion and utilization of coal in an environmentally acceptable manner; maintain and upgrade the coal research capabilities and facilities of U.S. colleges and

226

X-ray absorption spectroscopy of aluminum z-pinch plasma with tungsten backlighter planar wire array source  

Science Conference Proceedings (OSTI)

Absorption features from K-shell aluminum z-pinch plasmas have recently been studied on Zebra, the 1.7 MA pulse power generator at the Nevada Terawatt Facility. In particular, tungsten plasma has been used as a semi-backlighter source in the generation of aluminum K-shell absorption spectra by placing a single Al wire at or near the end of a single planar W array. All spectroscopic experimental results were recorded using a time-integrated, spatially resolved convex potassium hydrogen phthalate (KAP) crystal spectrometer. Other diagnostics used to study these plasmas included x-ray detectors, optical imaging, laser shadowgraphy, and time-gated and time-integrated x-ray pinhole imagers. Through comparisons with previous publications, Al K-shell absorption lines are shown to be from much lower electron temperature ({approx}10-40 eV) plasmas than emission spectra ({approx}350-500 eV).

Osborne, G. C.; Kantsyrev, V. L.; Safronova, A. S.; Esaulov, A. A.; Weller, M. E.; Shrestha, I.; Shlyaptseva, V. V. [Physics Department, University of Nevada, Reno, Reno, Nevada 89557 (United States); Ouart, N. D. [Naval Research Laboratory, Washington, D.C. 20375 (United States)

2012-10-15T23:59:59.000Z

227

Multiscale Modeling of Grain Boundary Segregation and Embrittlement in Tungsten for Mechanistic Design of Alloys for Coal Fired Plants  

SciTech Connect

Based on a recent discovery of premelting-like grain boundary segregation in refractory metals occurring at high temperatures and/or high alloying levels, this project investigated grain boundary segregation and embrittlement in tungsten (W) based alloys. Specifically, new interfacial thermodynamic models have been developed and quantified to predict high-temperature grain boundary segregation in the W-Ni binary alloy and W-Ni-Fe, W-Ni-Ti, W-Ni-Co, W-Ni-Cr, W-Ni-Zr and W-Ni-Nb ternary alloys. The thermodynamic modeling results have been experimentally validated for selected systems. Furthermore, multiscale modeling has been conducted at continuum, atomistic and quantum-mechanical levels to link grain boundary segregation with embrittlement. In summary, this 3-year project has successfully developed a theoretical framework in combination with a multiscale modeling strategy for predicting grain boundary segregation and embrittlement in W based alloys.

Luo, Jian; Tomar, Vikas; Zhou, Naixie; Lee, Hongsuk

2013-06-30T23:59:59.000Z

228

The effects of 800 MeV proton irradiation on the corrosion of tungsten, tantalum, stainless steel, and gold  

Science Conference Proceedings (OSTI)

Real time electrochemical data were acquired for tungsten, tantalum, stainless steel 304L, and gold targets during proton irradiation at the LANSCE Weapons Neutron Research Facility. The goal of this research was to establish a better understanding of the corrosion properties of materials as a function of proton irradiation and gain insight into the mechanism of the observed phenomena. The following electrochemical observations were made during proton irradiation of W, Ta, SS304, and Au: (1) the open circuit potential of all materials increased with increasing proton fluence; (2) the corrosion rate (at the OCP) of W and SS304 increased with increasing proton fluence; (3) the passive dissolution rate for SS304 and Ta decreased with increasing proton fluence; (4) the anodic dissolution rate for W increased with increasing proton fluence; (5) the pitting potential for SS304 increased with proton fluence, which is an indication that the material is less susceptible to pitting attack during irradiation.

Lillard, R.S.; Butt, D.P.; Kanner, G.; Daemen, L.

1997-12-01T23:59:59.000Z

229

Synthesis and reactivity of molybdenum and tungsten bis(dinitrogen) complexes supported by diphosphine chelates containing pendant amines  

SciTech Connect

In this study, we report the synthesis and characterization of molybdenum bis(dinitrogen) complexes supported by two PNP diphosphine ligands, Mo(N{sub 2}){sub 2}(PNP){sub 2}; PNP = [(R{sub 2}PCH{sub 2}){sub 2}N(R'), R = Et (ethyl), Ph (phenyl); R'= Me (methyl), Bn (benzyl)], and a series of tungsten bis(dinitrogen) complexes containing one or two PNP ligands, W(N{sub 2}){sub 2}(dppe)(PNP) and W(N{sub 2}){sub 2}(PNP){sub 2}, respectively, and the analogues complexes without pendant amines for comparison. These Mo- and W-N{sub 2} complexes were characterized by NMR, IR, spectroscopy, cyclic voltammetry and structurally characterized by X-ray crystallography. In addition, reactivity of the complexes with CO is described.

Weiss, Charles J.; Groves, Amy N.; Mock, Michael T.; Dougherty, William G.; Kassel, W. S.; Helm, Monte L.; DuBois, Daniel L.; Bullock, R. Morris

2012-04-30T23:59:59.000Z

230

Reactive oxygen species and oxidative DNA damage mediate the cytotoxicity of tungsten-nickel-cobalt alloys in vitro  

Science Conference Proceedings (OSTI)

Tungsten alloys (WA) have been introduced in an attempt to find safer alternatives to depleted uranium and lead munitions. However, it is known that at least one alloy, 91% tungsten-6% nickel-3% cobalt (WNC-91-6-3), causes rhabdomyosarcomas when fragments are implanted in rat muscle. This raises concerns that shrapnel, if not surgically removable, may result in similar tumours in humans. There is therefore a clear need to develop rapid and robust in vitro methods to characterise the toxicity of different WAs in order to identify those that are most likely to be harmful to human health and to guide development of new materials in the future. In the current study we have developed a rapid visual in vitro assay to detect toxicity mediated by individual WA particles in cultured L6-C11 rat muscle cells. Using a variety of techniques (histology, comet assay, caspase-3 activity, oxidation of 2'7'-dichlorofluorescin to measure the production of reactive oxygen species and whole-genome microarrays) we show that, in agreement with the in vivo rat carcinogenicity studies, WNC-91-6-3 was the most toxic of the alloys tested. On dissolution, it produces large amounts of reactive oxygen species, causes significant amounts of DNA damage, inhibits caspase-3, triggers a severe hypoxic response and kills the cells in the immediate vicinity of the alloy particles within 24 h. By combining these in vitro data we offer a mechanistic explanation of the effect of this alloy in vivo and show that in vitro tests are a viable alternative for assessing new alloys in the future.

Harris, R.M.; Williams, T.D.; Hodges, N.J.; Waring, R.H., E-mail: R.H.Waring@bham.ac.uk

2011-01-01T23:59:59.000Z

231

Comparison of secondary neutron dose in proton therapy resulting from the use of a tungsten alloy MLC or a brass collimator system  

Science Conference Proceedings (OSTI)

Purpose: To apply the dual ionization chamber method for mixed radiation fields to an accurate comparison of the secondary neutron dose arising from the use of a tungsten alloy multileaf collimator (MLC) as opposed to a brass collimator system for defining the shape of a therapeutic proton field. Methods: Hydrogenous and nonhydrogenous ionization chambers were constructed with large volumes to enable measurements of absorbed doses below 10{sup -4} Gy in mixed radiation fields using the dual ionization chamber method for mixed-field dosimetry. Neutron dose measurements were made with a nominal 230 MeV proton beam incident on a closed tungsten alloy MLC and a solid brass block. The chambers were cross-calibrated against a {sup 60}Co-calibrated Farmer chamber in water using a 6 MV x-ray beam and Monte Carlo simulations were performed to account for variations in ionization chamber response due to differences in secondary neutron energy spectra. Results: The neutron and combined proton plus {gamma}-ray absorbed doses are shown to be nearly equivalent downstream from either a closed tungsten alloy MLC or a solid brass block. At 10 cm downstream from the distal edge of the collimating material the neutron dose from the closed MLC was (5.3 {+-} 0.4) x 10{sup -5} Gy/Gy. The neutron dose with brass was (6.4 {+-} 0.7) x 10{sup -5} Gy/Gy. Further from the secondary neutron source, at 50 cm, the neutron doses remain close for both the MLC and brass block at (6.9 {+-} 0.6) x 10{sup -6} Gy/Gy and (6.3 {+-} 0.7) x 10{sup -6} Gy/Gy, respectively. Conclusions: The dual ionization chamber method is suitable for measuring secondary neutron doses resulting from proton irradiation. The results of measurements downstream from a closed tungsten alloy MLC and a brass block indicate that, even in an overly pessimistic worst-case scenario, secondary neutron production in a tungsten alloy MLC leads to absorbed doses that are nearly equivalent to those seen from brass collimators. Therefore, the choice of tungsten alloy in constructing the leaves of a proton MLC is appropriate, and does not lead to a substantial increase in the secondary neutron dose to the patient compared to that generated in a brass collimator.

Diffenderfer, Eric S.; Ainsley, Christopher G.; Kirk, Maura L.; McDonough, James E.; Maughan, Richard L. [Department of Radiation Oncology, University of Pennsylvania, Philadelphia, Pennsylvania 19104 (United States)

2011-11-15T23:59:59.000Z

232

NOREM Applications Guidelines: Procedures for Gas Tungsten Arc and Plasma Transferred Arc Welding of NOREM Cobalt-Free Hardfacing Al loys  

Science Conference Proceedings (OSTI)

Wire products have been successfully fabricated and new procedures developed for machine and manual gas tungsten arc welding (GTAW) of the iron-base NOREM hardfacing alloys. These developments enhance the attractiveness of NOREM alloys both in replacement valves and in field repairs of installed valves. This report describes the GTAW procedures and summarizes plasma transferred arc welding (PTAW) parameters for shop applications of NOREM alloys.

1996-01-03T23:59:59.000Z

233

Overview of the US-Japan collaborative investigation on hydrogen isotope retention in neutron-irradiated and ion-damaged tungsten  

Science Conference Proceedings (OSTI)

Plasma-facing components (PFCs) will be exposed to 14 MeV neutrons from deuterium-tritium (D-T) fusion reactions, and tungsten, a candidate PFC for the divertor in ITER, is expected to receive a neutron dose of 0.7 displacement per atom (dpa) by the end of operation in ITER. The effect of neutron-irradiation damage has been mainly simulated using high-energy ion bombardment. While this prior database of results is quite valuable for understanding the behavior of hydrogen isotopes in PFCs, it does not encompass the full range of effects that must be considered in a practical fusion environment due to short penetration depth, damage gradient, high damage rate, and high PKA energy spectrum of the ion bombardment. In addition, neutrons change the elemental composition via transmutations, and create a high radiation environment inside PFCs, which influence the behavior of hydrogen isotope in PFCs, suggesting the utilization of fission reactors is necessary for neutron irradiation. Therefore, the effort to correlate among high-energy ions, fission neutrons, and fusion neutrons is crucial for accurately estimating tritium retention under a neutron-irradiation environment. Under the framework of the US-Japan TITAN program, tungsten samples (99.99 at. % purity from A.L.M.T. Co.) were irradiated by neutron in the High Flux Isotope Reactor (HFIR), ORNL, at 50 and 300C to 0.025, 0.3, and 1.2 dpa, and the investigation of deuterium retention in neutron-irradiation was performed in the INL Tritium Plasma Experiment (TPE), the unique high-flux linear plasma facility that can handle tritium, beryllium and activated materials. This paper reports the recent results from the comparison of ion-damaged tungsten via various ion species (2.8 MeV Fe2+, 20 MeV W2+, and 700 keV H-) with that from neutron-irradiated tungsten to identify the similarities and differences among them.

Masashi Shimada; Y. Hatano; Y. Oya; T. Oda; M. Hara; G. Cao; M. Kobayashi; M. Sokolov; H. Watanabe; B. Tyburska; Y. Ueda; P. Calderoni

2011-09-01T23:59:59.000Z

234

J. Plasma Fusion Res. SERIES, Vol. 10 (2013) Simulating Tritium Retention in Tungsten with a Multiple Trap Model in the TMAP Code a  

E-Print Network (OSTI)

Accurately predicting the quantity of tritium retained in plasma facing components is a key safety issue for licensing future fusion power reactors. Retention of tritium in the lattice damage caused when high energy neutrons collide with atoms in the structural material of the reactors plasma facing components (PFCs) is an area of ongoing experimental research at the Idaho National Laboratory (INL) under the US/Japan TITAN collaboration. Recent experiments with the Tritium Plasma Experiment (TPE), located in the INLs Safety and Tritium Applied Research (STAR) facility, demonstrate that this damage can only be simulated by computer codes like the Tritium Migration Analysis Program (TMAP) if one assumes that the lattice damage produced by these neutrons results in multiple types of hydrogen traps (energy wells) within the material, each possessing a different trap energy and density. Previous attempts to simulate the quantity of deuterium released from neutron irradiated TPE tungsten targets indicated that at least six different traps are required by TMAP to model this release. In this paper we describe a recent extension of the TMAP trap site model to include as many traps as required by the user to simulate retention of tritium in neutron damaged tungsten. This model has been applied to data obtained for tungsten irradiated to a damage level of 0.025 dpa in the High Flux Isotope Reactor (HFIR) at the Oak Ridge National Laboratory (ORNL) after exposure to a plasma in TPE.

Brad J. Merrill; Masashi Shimada; Paul W. Humrickhouse

2012-01-01T23:59:59.000Z

235

Narrow groove gas tungsten arc welding of ASTM A508 Class 4 steel for improved toughness properties  

Science Conference Proceedings (OSTI)

Welding of heavy section steel has traditionally used the automatic submerged arc welding (ASAW) process because of the high deposition rates achievable. However, the properties, particularly fracture toughness, of the weld are often inferior when compared to base material. This project evaluated the use of narrow groove gas tungsten arc welding (GTAW) to improve weld material properties. The welding procedures were developed for ASTM A508 Class 4 base material using a 1% Ni filler material complying to AWS Specification A.23-90-EF3-F3-N. A narrow groove joint preparation was used in conjunction with the GTAW process so competitive fabrication rates could be achieved when compared to the ASAW process. Weld procedures were developed to refine weld substructure to achieve better mechanical properties. Two heaters of weld wire were used to examine the effects of minor filler metal chemistry differences on weld mechanical properties. Extensive metallographic evaluations showed excellent weld quality with a refined microstructure. Chemical analysis of the weld metal showed minimal weld dilution by the base metal. Mechanical testing included bend and tensile tests to ensure weld quality and strength. A Charpy impact energy curve versus temperature and fracture toughness curve versus temperature were developed for each weld wire heat. Results of fracture toughness and Charpy impact testing indicated an improved transition temperature closer to that of the base material properties.

Penik, M.A. Jr. [Rensselaer Polytechnic Inst., Troy, NY (United States)

1997-04-01T23:59:59.000Z

236

Tungsten isotopic compositions in stardust SiC grains from the Murchison meteorite: Constraints on the s-process in the Hf-Ta-W-Re-Os region  

E-Print Network (OSTI)

We report the first tungsten isotopic measurements in stardust silicon carbide (SiC) grains recovered from the Murchison carbonaceous chondrite. The isotopes 182W, 183W, 184W, 186W and 179Hf, 180Hf were measured on both an aggregate (KJB fraction) and single stardust SiC grains (LS+LU fraction) believed to have condensed in the outflows of low-mass carbon-rich asymptotic giant branch (AGB) stars with close-to-solar metallicity. The SiC aggregate shows small deviations from terrestrial (=solar) composition in the 182W/184W and 183W/184W ratios, with deficits in 182W and 183W with respect to 184W. The 186W/184W ratio, however, shows no apparent deviation from the solar value. Tungsten isotopic measurements in single mainstream stardust SiC grains revealed lower than solar 182W/184W, 183W/184W, and 186W/184W ratios. We have compared the SiC data with theoretical predictions of the evolution of W isotopic ratios in the envelopes of AGB stars. These ratios are affected by the slow neutron-capture process and match...

vila, J N; Ireland, T R; Gyngard, F; Zinner, E; Cristallo, S; Holden, P; Buntain, J; Amari, S; Karakas, A

2011-01-01T23:59:59.000Z

237

High Performance Builder Spotlight: Green Coast Enterprises - New Orleans, Louisiana  

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

Greening the Gulf Coast Greening the Gulf Coast Green Coast Enterprises, through its work on Project Home Again, is the largest developer of U.S. Department (DOE) of Energy Builders Challenge-qualified homes in Louisiana. By June 2010, the team had constructed 45 homes that meet DOE's Builders Challenge criteria, with an additional 55 homes in the forecast, including 25 begun in July 2010. The energy-efficient, storm-resilient, single- family homes achieve average Home Energy Rating System (HERS) scores of 66, and Will Bradshaw, president of Green Coast Enterprises, estimates that the efficiency features of the homes will save residents an average of 30%-40% annually in energy savings in comparison to their previous homes. These homes are being constructed through a successful community-scale

238

Spotlight on Rutland County, Vermont: How Local Ties Lead to...  

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

Better Buildings Neighborhood Program is part of the national Better Buildings Initiative led by the U.S. Department of Energy. To learn how the Better Buildings Neighborhood...

239

A message from Dean Joyce Berry March 2010 WCNR Spotlight  

E-Print Network (OSTI)

by reforming petroleum, a nonrenewable energy re- source. By operating at ambient temperature and without com: water and energy. Today, water providers are forced to tap sources of lower quality: polluted ground and river water, eutrophic lake and reservoir water, and wastewater. These poor-qual- ity sources need

240

Turning a Nuclear Spotlight on Illegal Weapons Material  

Science Conference Proceedings (OSTI)

... research neutron source, which bathes material samples with low-energy neutrons. ... count acts as a unique signature of special nuclear material. ...

2013-09-12T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

HSO Spotlight No 02 2012 Homeland Security Presidential Directive...  

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

and those badges will need to be renewed. Appointment of HSPD-12 Renewal Officials: Each HQ element needs to assign Federal personnel within their organization as USAccess...

242

Isoprenoid biosynthesis in eukaryotic phototrophs: A spotlight on algae  

SciTech Connect

Isoprenoids are one of the largest groups of natural compounds and have a variety of important functions in the primary metabolism of land plants and algae. In recent years, our understanding of the numerous facets of isoprenoid metabolism in land plants has been rapidly increasing, while knowledge on the metabolic network of isoprenoids in algae still lags behind. Here, current views on the biochemistry and genetics of the core isoprenoid metabolism in land plants and in the major algal phyla are compared and some of the most pressing open questions are highlighted. Based on the different evolutionary histories of the various groups of eukaryotic phototrophs, we discuss the distribution and regulation of the mevalonate (MVA) and the methylerythritol phosphate (MEP) pathways in land plants and algae and the potential consequences of the loss of the MVA pathway in groups such as the green algae. For the prenyltransferases, serving as gatekeepers to the various branches of terpenoid biosynthesis in land plants and algae, we explore the minimal inventory necessary for the formation of primary isoprenoids and present a preliminary analysis of their occurrence and phylogeny in algae with primary and secondary plastids. The review concludes with some perspectives on genetic engineering of the isoprenoid metabolism in algae.

Lohr M.; Schwender J.; Polle, J. E. W.

2012-04-01T23:59:59.000Z

243

Italy's rating in the spotlight again. - Asset Securitization ...  

U.S. Energy Information Administration (EIA)

Fitch Ratings put Italy's country AA' ratings on watch negative last week. The Italian covered... | Article from Asset Securitization Report June 5, ...

244

Workers' Spotlight Newsletter - Issue 10 | Department of Energy  

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

the Energy Employees Occupational Illness Compensation Program and the Former Worker Medical Screening Program. NovemberDecember issue covers: Director's Note National Day of...

245

ARPA-E Technology Showcase: Project Spotlight | Department of...  

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

that use half the energy and avoid using potent greenhouse gas coolants of traditional vapor-compression refrigeration systems. Sheetak's Non-Equilibrium Asymmetric...

246

Better Buildings: Financing and Incentives: Spotlight on Maine...  

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

of Efficiency Maine program participants live in oil-heated homes. Average annual home heating oil consumption in the state is nearly 800 gallons, but early participants...

247

Spotlight on Michigan: Sweeping the State for Ultimate Success  

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

goals at the program core, BetterBuildings for Michigan is on track to understanding homeowner motivations, and in the process, is laying a strong and flexible foundation for...

248

Better Buildings: Financing and Incentives: Spotlight on Michigan...  

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

Additional Measures as Percentage of Eligible 45% maximum rebate amount that a homeowner could receive. For financing, the interest rate was the key variable. This range of...

249

Better Buildings: Workforce: Spotlight on Fayette County, Pennsylvania...  

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

a BPI certified technician to perform a home energy assessment in order for the homeowner to qualify for an energy efficiency upgrade rebate. To achieve the program's goals,...

250

The relationship between structural evolution and electrical percolation of the initial stages of tungsten chemical vapor deposition on polycrystalline TiN  

SciTech Connect

This paper presents experimental results and a geometric model of the evolution of sheet resistance and surface morphology during the transition from nucleation to percolation of tungsten chemical vapor deposition over ultrathin polycrystalline titanium nitride (TiN). We observed two mechanisms of reduction in sheet resistance. At deposition temperatures higher than 310 deg. C, percolation effect is formed at {approx}35% of surface coverage, {theta}, and characterized with a sharp drop in resistance. At temperature below 310 deg. C, a reduction in resistance occurs in two steps. The first step occurs when {theta} = 35% and the second step at {theta} = 85%. We suggest a geometric model in which the electrical percolation pass is modulated by the thickness threshold of the islands at the instant of collision.

Rozenblat, A. [Micron Semiconductors Israel Ltd., Qiryat-Gat 82109 (Israel); Department of Physical Electronics, Electrical Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); Haimson, S. [Material Science Program, Tel Aviv University, Tel Aviv 69978 (Israel); Shacham-Diamand, Y. [Department of Physical Electronics, Electrical Engineering, Tel Aviv University, Tel Aviv 69978 (Israel); Horvitz, D. [Micron Semiconductors Israel Ltd., Qiryat-Gat 82109 (Israel)

2012-01-16T23:59:59.000Z

251

Field test of a generic method for the sampling and analysis of halogenated hydrocarbons listed in title III of the Clean Air Act amendments of 1990. Report for January 1992-December 1993  

SciTech Connect

To validate a new source test method for EPA use, the performance of the sampling and analytical methodology for the chemicals of interest must be established and demonstrated through field tests at sources similar to those of interest. Validation studies for measuring volatile and semi-volatile halogenated organics were undertaken in two different studies. Repeated sampling runs of the Volatile Organic Sample Train (VOST; SW-846 Sampling Method 0030 with Analytical Method 5041) and Semi-Volatile Organic Sample Train (Semi-VOST; SW-846 Method 0010 with Analytical Method 8270) were collected at two source locations. Quadruple sampling trains were used in each run, with two of the trains being spiked with standards. For the VOST method, the results of the two field studies were consistent with laboratory tests. For the Semi-VOST method, consistent results were obtained in the laboratory study and one of the field tests. At the second field site, the Semi-VOST data were inadequate because of problems encountered in preparation of the samples for analysis.

McGaughey, J.F.; Bursey, J.T.; Rice, J.; Merrill, R.G.; Jackson, M.D.

1993-01-01T23:59:59.000Z

252

TUNGSTEN ISOTOPIC COMPOSITIONS IN STARDUST SiC GRAINS FROM THE MURCHISON METEORITE: CONSTRAINTS ON THE s-PROCESS IN THE Hf-Ta-W-Re-Os REGION  

SciTech Connect

We report the first tungsten isotopic measurements in stardust silicon carbide (SiC) grains recovered from the Murchison carbonaceous chondrite. The isotopes {sup 182,183,184,186}W and {sup 179,180}Hf were measured on both an aggregate (KJB fraction) and single stardust SiC grains (LS+LU fraction) believed to have condensed in the outflows of low-mass carbon-rich asymptotic giant branch (AGB) stars with close-to-solar metallicity. The SiC aggregate shows small deviations from terrestrial (= solar) composition in the {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W ratios, with deficits in {sup 182}W and {sup 183}W with respect to {sup 184}W. The {sup 186}W/{sup 184}W ratio, however, shows no apparent deviation from the solar value. Tungsten isotopic measurements in single mainstream stardust SiC grains revealed lower than solar {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 186}W/{sup 184}W ratios. We have compared the SiC data with theoretical predictions of the evolution of W isotopic ratios in the envelopes of AGB stars. These ratios are affected by the slow neutron-capture process and match the SiC data regarding their {sup 182}W/{sup 184}W, {sup 183}W/{sup 184}W, and {sup 179}Hf/{sup 180}Hf isotopic compositions, although a small adjustment in the s-process production of {sup 183}W is needed in order to have a better agreement between the SiC data and model predictions. The models cannot explain the {sup 186}W/{sup 184}W ratios observed in the SiC grains, even when the current {sup 185}W neutron-capture cross section is increased by a factor of two. Further study is required to better assess how model uncertainties (e.g., the formation of the {sup 13}C neutron source, the mass-loss law, the modeling of the third dredge-up, and the efficiency of the {sup 22}Ne neutron source) may affect current s-process predictions.

Avila, Janaina N.; Ireland, Trevor R.; Holden, Peter [Research School of Earth Sciences, Australian National University, Canberra, ACT 0200 (Australia); Lugaro, Maria; Buntain, Joelene [Centre for Stellar and Planetary Astrophysics, Monash University, Clayton, VIC 3800 (Australia); Gyngard, Frank; Zinner, Ernst; Amari, Sachiko [Laboratory for Space Sciences and the Department of Physics, Washington University, One Brookings Drive, St. Louis, MO 63130 (United States); Cristallo, Sergio [Departamento de Fisica Teorica y del Cosmos, Universidad de Granada, Granada 18071 (Spain); Karakas, Amanda, E-mail: janaina.avila@anu.edu.au [Mount Stromlo Observatory, Australian National University, Weston Creek, ACT 2611 (Australia)

2012-01-01T23:59:59.000Z

253

Nucleon-induced fission cross-sections of tantalum and separated tungsten isotopes and "compound nucleus" effect in intermediate energy region  

E-Print Network (OSTI)

Neutron- and proton-induced fission cross-sections of separated isotopes of tungsten (182W, 183W, 184W, and 186W) and 181Ta relative to 209Bi have been measured in the incident nucleon energy region 50 - 200 MeV using fission chambers based on thin-film breakdown counters (TFBC) using quasi-monoenergetic neutrons from the 7Li(p,n) reaction and at the proton beams of The Svedberg Laboratory (TSL), Uppsala University (Uppsala, Sweden). The results are compared with predictions by the CEM03.01 event generator, as well as with the recent data for nuclei in the lead-bismuth region. The effect of "compound nucleus" in the intermediate energy region is discussed, displaying in exponential dependence of nucleon-induced fission cross-sections on the parameter Z^2/A of the composite system (projectile+target nucleus), and in other characteristics of the fission process for which parameter Z^2/A plays a role similar to the one of the usual liquid-drop parameter Z^2/A of compound nuclei.

A. N. Smirnov; O. I. Batenkov; V. P. Eismont; N. P. Filatov; J. Blomgren; H. Conde; A. V. Prokofiev; S. G. Mashnik

2007-05-16T23:59:59.000Z

254

Photometric assessment of energy efficient torchieres  

SciTech Connect

Extensive development of designs and prototyping of energy efficient torchiere systems using compact fluorescent lamps (CFLs) has led directly to the production of CFL torchieres by a major US manufacturer. This paper compares the electrical and photometric characteristics of one of the new CFL torchieres to standard tungsten halogen torchieres (halogen uplighters). Power assessments and gonio-photometric data indicate that the new CFL torchiere provides significant energy savings over the standard tungsten halogen torchiere while producing more luminous flux. The energy savings is jointly due to the high source efficacy of the CFLs and the poor performance . of the imported halogen lamps. The paper also presents results from a test site in the student dormitories at Stanford University where a torchiere "lamp swap" program was initiated in which students voluntarily traded their halogen torchieres for CFL torchieres. Out of the 500 torchieres involved in the lamp swap, a random sample of nearly 100 halogen lamps (seasoned in the field and considered to represent a typical population) were collected and photometrically and electrically characterized in the laboratory. These laboratory results indicate that the CFL torchieres use 65 watts to produce 25 percent more light than the 300 W tungsten halogen torchieres they are designed to replace. Additionally, the CFL torchieres have the benefit of a cooler lamp operating temperature, making them safer luminaires.

Page, Erik; Siminovitch, Michael

1997-06-01T23:59:59.000Z

255

Hydrogen/halogen energy storage system  

DOE Green Energy (OSTI)

The hydrogen/chlorine energy storage system has been considered at BNL for large scale energy storage. In FY1978 work included an assessment of system safety and cost, investigations of cell performance under conditions elevated pressure and temperature, determination of the transport properties of Nafion membranes and electrochemical engineering studies. Results are summarized.

Spaziante, P M; Sioli, G C; Trotta, R; Perego, A; McBreen, J

1978-01-01T23:59:59.000Z

256

Modern Records of Radiatively Important Halogenated Compounds...  

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

at CDIAC sites: Methane, Nonmethane Hydrocarbons, Alkyl Nitrates, and Chlorinated Carbon Compounds including three Chlorofluorocarbons (CFC-11, CFC-12, and CFC-113) in...

257

Purified Halogen Gas Production - Available Technologies ...  

Computers & Electronics; Enabled by the Office of Science. Security & Privacy | Contact PNNL. Last Update: February 2012 | Pacific Northwest ...

258

Method for deposition of a conductor in integrated circuits  

DOE Patents (OSTI)

A method is described for fabricating integrated semiconductor circuits and, more particularly, for the selective deposition of a conductor onto a substrate employing a chemical vapor deposition process. By way of example, tungsten can be selectively deposited onto a silicon substrate. At the onset of loss of selectivity of deposition of tungsten onto the silicon substrate, the deposition process is interrupted and unwanted tungsten which has deposited on a mask layer with the silicon substrate can be removed employing a halogen etchant. Thereafter, a plurality of deposition/etch back cycles can be carried out to achieve a predetermined thickness of tungsten.

Creighton, J. Randall (Albuquerque, NM); Dominguez, Frank (Albuquerque, NM); Johnson, A. Wayne (Albuquerque, NM); Omstead, Thomas R. (Albuquerque, NM)

1997-01-01T23:59:59.000Z

259

Sintering Kinetics of SPS Tungsten and Tungsten-Ceria Cermets  

Science Conference Proceedings (OSTI)

Aerosol Route Synthesis of Copper Oxide Nanoparticles Using Copper Nitrate Solution AlGaAs-Based Optical ... Defect Energetics and Fission Product Transport in ZrC ... Enhancing Mineral Beneficiation by High Intensity Power Ultrasound.

260

Spark Plasma Sintering of Tungsten and Tungsten-Ceria Powders  

Science Conference Proceedings (OSTI)

Opacified, Reinforced Aerogel for Thermal Insulation of Thermoelectric Generators and Other Advanced Energy Systems Oxide Ceramic Materials for...

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Contract No. DE-AC03-76SF00098. New Energy Efficient Torchieres Ready For Hot Torchiere Market ABSTRACT  

E-Print Network (OSTI)

The extraordinary market growth of the high power halogen torchiere (halogen uplighter) presents significant global energy savings opportunities for energy efficient alternatives. Extensive development of prototype designs of energy efficient torchiere systems using compact fluorescent lamps (CFLs) has lead directly to the production and commercialization of CFL torchieres. This paper analyzes the current global market for torchieres and compares the electrical and photometric characteristics of one of the new CFL torchieres to standard tungsten halogen torchieres. Power assessments and photometric data indicate that the new CFL torchiere provides significant energy savings over the standard tungsten halogen torchiere while producing more luminous flux. The energy savings is jointly due to the high source efficacy of the CFLs and the poor performance of many cheaply made halogen lamps. Laboratory and in-situ experiments indicate that the CFL torchieres use 65 Watts to produce 25 percent more light than the 300 W tungsten halogen torchieres they are designed to replace. Additionally, the CFL torchieres have the benefit of a cooler lamp operating temperature, making them safer luminaires (Brooks, 1997; New York Times, 1997). This safety benefit, coupled with the potential for significant reductions in global greenhouse gas emissions, has prompted the insurance industry to form a unique alliance with energy conservation groups to promote energy efficient torchieres.

Evan Mills; Michael Siminovitch; Evan Mills; Michael Siminovitch

1998-01-01T23:59:59.000Z

262

New energy efficient torchieres ready for hot torchiere market  

Science Conference Proceedings (OSTI)

The extraordinary market growth of the high power halogen torchiere (halogen uplighter) presents significant global energy savings opportunities for energy efficient alternatives. Extensive developed of prototype designs of energy efficient torchiere systems using compact fluorescent lamps (CFLs) has lead directly to the production and commercialization of CFL torchieres. This paper analyzes the current global market for torchieres and compares the electrical and photometric characteristics of one of the new CFL torchieres to standard tungsten halogen torchieres. Power assessments and photometric data indicate that the new CFL torchiere provides significant energy savings over the standard tungsten halogen torchiere while producing more luminous flux. The energy savings is jointly due to the high source efficacy of the CFLs and the poor performance of many cheaply made halogen lamps. Laboratory and in-situ experiments indicate that the CFL torchieres use 65 Watts to produce 25% more light than the 300 W tungsten halogen torchieres they are designed to replace. Additionally, the CFL torchieres have the benefit of a cooler lamp operating temperature, making them safer luminaires (Brooks, 1997; New York Times, 1997). This safety benefit, coupled with the potential for significant reductions in global greenhouse gas emissions, has prompted the insurance industry to form a unique alliance with energy conservation groups to promote energy efficient torchieres.

Page, E.; Mills, E.; Siminovitch, M.

1997-11-01T23:59:59.000Z

263

Fatigue Failure in Tungsten Carbide  

Science Conference Proceedings (OSTI)

Mercury porosimetry can be applied to determine the percent interconnected porosity. ... Failure Analysis of Duplex Stainless Steel Wet Flue Gas Desulfurization ... The Role of Corrosion and Oxidation in High Temperature Failures: Valuable...

264

Facile Thermal W-W Bond Homolysis in the N-Heterocyclic Carbene-Containing Tungsten Dimer [CpW(CO)2(IMe)]2  

SciTech Connect

The thermal W-W bond homolysis in [CpW(CO)2(IMe)]2 (IMe = 1,3-dimethylimidazol-2-ylidene) was investigated and was found to occur to a large extent compared to other tungsten dimers such as [CpW(CO)3]2. CpW(CO)2(IMe)H was prepared by heating a solution of [IMeH]+[CpW(CO)2(PMe3)]?, and exists in solution as a mixture of interconverting cis and trans isomers. The carbene rotation in CpW(CO)2(IMe)H was explored by DFT calculations, and low enthalpic barriers (< 3.5 kcal mol?1) are predicted. CpW(CO)2(IMe)H has pKaMeCN = 31.5(3) and deprotonation with KH gives K+[CpW(CO)2(IMe)]? ( MeCN). Hydride abstraction from CpW(CO)2(IMe)H with Ph3C+PF6? in the presence of a coordinating ligand L (MeCN or THF) gives [CpW(CO)2(IMe)(L)]+PF6?. Electrochemical measurements on the anion [CpW(CO)2(IMe)]? in MeCN, together with digital simulations, give an E1/2 of ?1.54(2) V vs Cp2Fe+/0 for the [CpW(CO)2(IMe)]/? couple. A thermochemical cycle provides the solution bond dissociation free energy of the W-H bond of CpW(CO)2(IMe)H as 61.3(6) kcal mol?1. In the electrochemical oxidation of [CpW(CO)2(IMe)]?, reversible dimerization of the electrogenerated radical CpW(CO)2(IMe) occurs, and digital simulation provides kinetic and thermodynamic parameters for the monomer-dimer equilibrium: kdimerization ~ 2.5 ? 104 M?1 s?1, khomolysis ~ 0.5 s?1 (i.e., Kdim ~ 5 ? 104 M?1). Reduction of [CpW(CO)2(IMe)(MeCN)]+PF6? with cobaltocene gives the dimer [CpW(CO)2(IMe)]2, which in solution exists as a mixture of anti and gauche rotomers. As expected from the electrochemical experiments, the dimer is in equilibrium with detectable amounts of CpW(CO)2(IMe). This species was observed by IR spectroscopy, and its presence in solution is also in accordance with the observed reactivity toward 2,6-di-tert-butyl-1,4-benzoquinone, chloroform and dihydrogen. This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Biosciences and Geosciences. Pacific Northwest National Laboratory is a multiprogram national laboratory operated for DOE by Battelle. The EPR studies were performed at EMSL, a national scientific user facility sponsored by the Department of Energys Office of Biological and Environmental Research located at Pacific Northwest National Laboratory.

van der Eide, Edwin F.; Liu, Tianbiao L.; Camaioni, Donald M.; Walter, Eric D.; Bullock, R. Morris

2012-03-05T23:59:59.000Z

265

Zevenhoven & Kilpinen Halogens, dioxins/furans 17.6.2001 7-1 Chapter 7 Halogens,  

E-Print Network (OSTI)

and calcium, beinglimestone(CaCO3), lime(CaO),hydratedlime(Ca(OH)2), nahcolite(NaHCO3), soda (Na2CO3) or trona with soda/trona for IGCC gasifier product gas at 400-500EC (picture from Kiel, 1997) Based on thermodynamic, shown in Figure 7.12, is based on a soda/trona sorbent for use at 400-500EC. Based on laboratory tests

Laughlin, Robert B.

266

A retractable electron emitter for the creation of unperturbed pure electron plasmas  

E-Print Network (OSTI)

.1063/1.2431090 I. INTRODUCTION In recent years the desire for increased confinement time in stellarators has led time of the emitter. The emitter itself is a tungsten coil from a halogen light bulb. It is mounted and moves through a photomicrosensor. The photomicrosensor is a device with a small light-emitting diode LED

267

Catalysts for hydrocarbon conversion  

Science Conference Proceedings (OSTI)

Catalyst, particularly useful in catalytic reforming and for producing highly pure aromatic hydrocarbons, comprising an alumina carrier and containing, expressed in proportion of the weight of the alumina carrier: 005 to 1% of platinum 01 to 4% of gallium, indium or thallium 01 to 2% of tungsten, and 1 to 10% of halogen.

Le P. J.; Malmaison, R.; Marcilly, C.; Martino, G.; Miquel, J.

1980-08-12T23:59:59.000Z

268

Application of a nonisothermal thermogravimetric method to the kinetic study of the reduction of metallic oxides: Part 2. A theoretical treatment of powder bed reduction and its application to the reduction of tungsten oxide by hydrogen  

SciTech Connect

Theoretical treatment of nonisothermal kinetic studies has been extended in the present work to gas-solid reactions in powder beds. An expression for the activation energies for the reaction has been derived on the basis that the reaction proceeds by the movement of the reaction front, the velocity of the movement being kept constant. The reliability of the method has been tested by applying the same to the reduction of tungsten oxide by hydrogen. The experiments were carried out using thermogravimetric technique under both isothermal and nonisothermal conditions. The reaction front is considered to consist of a thin layer of small particles. The rate of the reduction seems to be controlled by the chemical reaction between the product and the unreacted core existing in each of the small particles. Using the expression derived in the present work, the activation energy of the reaction was calculated from the results of the nonisothermal experiments to be 83.62 kJ/mol. This value is in good agreement with the value of 83.17 kJ/mol evaluated from isothermal experiments.

Bustnes, J.A.; Sichen, D.; Seetharaman, S. (Royal Inst. of Tech., Stockholm (Sweden). Department of Theoretical Metallurgy)

1993-06-01T23:59:59.000Z

269

Office of Worker Screening and Compensation Support Workers' Spotlight, November/December 2013  

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

Al Tseu, former US Paratrooper, speaks with visitors Al Tseu, former US Paratrooper, speaks with visitors to the National Atomic Testing Museum celebrating the National Day of Remembrance I I I s s s s s s u u u e e e 1 1 1 0 0 0 N N N o o o v v v e e e m m m b b b e e e r r r / / / D D D e e e c c c e e e m m m b b b e e e r r r 2 2 2 0 0 0 1 1 1 3 3 3 Office of Worker Screening and Compensation Support I N S I D E T H I S I S S U E : Director's Note 1 Remembrance 1 Staff 2 Beryllium 2 Trivia 2 SERT 3 FWP Milestone 4 Calendar 5 A NOTE FROM THE DIRECTOR By Greg Lewis I had the pleasure of attending and presenting at the recent Joint Outreach Task Group (JOTG) meetings in Livermore and Berkeley, California. Representatives from the Department of Labor (DOL), the National Institute for Occupational Safety and Health, the DOL Ombudsman, and the Worker Health Protection

270

A spotlight on security and privacy risks with future household robots: attacks and lessons  

Science Conference Proceedings (OSTI)

Future homes will be populated with large numbers of robots with diverse functionalities, ranging from chore robots to elder care robots to entertainment robots. While household robots will offer numerous benefits, they also have the potential to introduce ... Keywords: cyber-physical systems, domestic robots, household robots, multi-robot attack, privacy, robots, security, single-robot attack, ubiquitous robots

Tamara Denning; Cynthia Matuszek; Karl Koscher; Joshua R. Smith; Tadayoshi Kohno

2009-09-01T23:59:59.000Z

271

oday the spotlight in the United States is on the increasing world demand for  

E-Print Network (OSTI)

-fuel for transportation, industrial chemicals or power plants to supply electrical power for public consumption. Efforts and partially digested dietary nutrients is a resource that benefits plant growth and adds organic matter Biomass Root Crops Agricultural Residues Silage/Hay Animal Manure Cities Municipal Solid Wastes Power

Mukhtar, Saqib

272

Spotlight on Mexico. The domino effect: crude price changes since December 1982  

Science Conference Proceedings (OSTI)

While world crude prices continue their downward slide, the world is watching Mexico to see how it follows the trend. If the cut to be announced is too deep, petro-dollars will be sacrificed; if the cut is too modest, share of market may suffer. Just as Petroleos Mexicanos (PEMEX), the state oil company, was the means for overextension in borrowing and for wrong-headed administration, at this moment PEMEX is becoming the means for Mexico's restoration. While Mexico confronts its worst financial crisis since the revolution, PEMEX confronts its most difficult challenge since nationalization of the oil industry in 1938. To stop the compromising flood of petro-dollars out of PEMEX, the national oil company has been made subordinate to the Ministry of Energy, Mines, and State Industries. What Mexico is doing about the PEMEX crisis may be promotive of Mexican nationalism and international bankers' security at the same time. This issue presents the Energy Detente (1) fuel price/tax series and (2) industrial fuel prices for February 1983 for countries of the Western Hemisphere. 5 figures, 7 tables.

Not Available

1983-02-23T23:59:59.000Z

273

Spotlight: Security Risks in the Cloud - Reality, or A Broken Record?  

Science Conference Proceedings (OSTI)

The cost savings of cloud computing versus the anticipated security risks: it's the broken record that seems to be on continuous loop for security professionals contemplating their stragegy. Ted Kritsonis examines the key considerations

Ted Kritsonis

2011-01-01T23:59:59.000Z

274

Two-stage fluidized-bed/cyclonic agglomerating incinerator. Technology spotlight report  

Science Conference Proceedings (OSTI)

The two-stage fluidized-bed/cyclonic agglomerating incinerator combines and improves upon the fluidized-bed, agglomeration/ incineration-technology and the cyclonic-combustion technology developed at Institute of Gas Technolgy (IGT) over many years. The result is a unique and extremely flexible incinerator for solid, liquid, and gaseous wastes. The system can operate over a wide range of conditions and has a destruction and removal efficiency (DRE) greater than 99.99%. Solid inorganic contaminants are contained within aglassy matrix, rendering them benign and suitable for disposal in an ordinary landfill.

NONE

1995-08-01T23:59:59.000Z

275

A Fast Response Continuous Analyzer for Halogenated Atmospheric Tracers  

Science Conference Proceedings (OSTI)

A fast response version of the continuous SF6 analyzer originally introduced in 1976 has been developed. The new continuous analyzer has a response time constant of 0.36 s, which is 430 times faster than previous analyzers. The very fast ...

Richard L. Benner; Brian Lamb

1985-12-01T23:59:59.000Z

276

Accumulation and Metabolism of Halogenated Compounds in Sea Turtles  

E-Print Network (OSTI)

with between 1 and 10 chlorine atoms substituted on theon the right. The number of chlorine atoms is represented bysubstitute GSH for a chlorine atom on PCB, as has been

Richardson, Kristine Lynn

2010-01-01T23:59:59.000Z

277

Origin of Halogens and Nitrogen in Enstatite Chondrites  

E-Print Network (OSTI)

D.Y. Je rome, Abundances of chlorine, bromine and iodine inof boron, lithium and chlorine in meteorites, in MeteoriteW. Scherle, Determination of chlorine in stony meteorites by

Rubin, Alan E.; Choi, Byeon-Gak

2009-01-01T23:59:59.000Z

278

Insensitive explosive composition of halogenated copolymer and triaminotrinitrobenzene  

DOE Patents (OSTI)

A highly insensitive and heat resistant plastic-bonded explosive containing 90 wt % triaminotrinitrobenzene and 10 wt % of a fully saturated copolymer of chlorotrifluoroethylene and vinylidene fluoride is readily manufactured by the slurry process.

Benziger, Theodore M. (Santa Fe, NM)

1976-01-01T23:59:59.000Z

279

BSA 02-15: Use of Halogenated Carboranyl Porphyrins for ...  

Radiation sensitizing agents targeting ... Tests in animals hae shown that the carboranylporphyrins of the present invention ... Report a Problem ...

280

Inert gas rejection device for zinc-halogen battery systems  

DOE Patents (OSTI)

An electrolytic cell for separating chlorine gas from other (foreign) gases, having an anode, a cathode assembly, an aqueous electrolyte, a housing, and a constant voltage power supply. The cathode assembly is generally comprised of a dense graphite electrode having a winding channel formed in the face opposing the anode, a gas impermeable (but liquid permeable) membrane sealed into the side of the cathode electrode over the channel, and a packing of graphite particles contained in the channel of the cathode electrode. The housing separates and parallelly aligns the anode and cathode assembly, and provides a hermetic seal for the cell. In operation, a stream of chlorine and foreign gases enters the cell at the beginning of the cathode electrode channel. The chlorine gas is dissolved into the electrolyte and electrochemically reduced into chloride ions. The chloride ions disfuse through the gas impermeable membrane, and are electrochemically oxidized at the anode into purified chlorine gas. The foreign gases do not participate in the above electrochemical reactions, and are vented from the cell at the end of the cathode electrode channel.

Hammond, Michael J. (Sterling Heights, MI); Arendell, Mark W. (Warren, MI)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Characterisation and Removal of Halogens in the EAF Dust and ...  

Science Conference Proceedings (OSTI)

Aug 1, 2000 ... For most thermal processes for zinc recovery, such as the plasma processes with a zinc condenser, the halides in the gas stream will form a...

282

Accumulation and Metabolism of Halogenated Compounds in Sea Turtles  

E-Print Network (OSTI)

Lexington: The University of Kentucky Press, 35-46. JewellLexington, KY: The University of Kentucky Press, xi- xxx.Lexington: The University of Kentucky Press, 35-46. Jaspers

Richardson, Kristine Lynn

2010-01-01T23:59:59.000Z

283

Cleaning and Finishing of Tungsten and Molybdenum  

Science Conference Proceedings (OSTI)

...are porous. To remove these oxides, abrasive blasting is not generally required. When this process is used,

284

ELECTRONIC SPECIFIC HEAT OF SODIUM TUNGSTEN BRONZE  

SciTech Connect

The design and operation of a calorimeter for use in the temperature range 1.8 to 4.2 deg K are presented, and the methods used in the treatment of data and calculation of results are discussed. The heat capacities of several Na- W bronzes (Na/sub x/WO/sub 3/) were determined in the temperature interval 1.8 to 4.2 deg K. Samples having x equal to 0.89, heat capacities are described adequately by the sum of two terms, one linear and one cubic in temperature. The electronic specific heat of each sample is obtained by evaluating the coefficient of the linear term, and the Rebye eharacteristic temperature derived from the coefficient of the cubic term. Rensities of one-electron energy levels at the Fermi energy, and effective electronic masses are calculated from the electronic specific heats. A plot of the density of states as a function of energy can be made if it is assumed that this curve is independent of Na concentration. The justification of this assumption is discussed in the light of current theories of the solid state. The density of states curve rises rapidly at higher energies, and this rise is interpreted in terms of the filling of a Brillouin zone or of an overlap of two bands. (auth)

Vest,R.W.; Griffel, M.; Smith, J.F.

1957-03-01T23:59:59.000Z

285

GRAIN BOUNDARY STRENGTHENING PROPERTIES OF TUNGSTEN ALLOYS  

SciTech Connect

Density functional theory was employed to investigate grain boundary (GB) properties of W alloys. A range of substitutional solutes across the Periodic Table was investigated to understand the behavior of different electronic orbitals in changing the GB cleavage energy in the ?27a[110]{525} GB. A number of transition metals were predicted to enhance the GB cohesion. This includes Ru, Re, Os, Ir, V, Cr, Mn, Fe, Co, Ti, Hf, Ta and Nb. While lanthanides, s and p elements were tended to cause GB embrittlement.

Setyawan, Wahyu; Kurtz, Richard J.

2012-10-10T23:59:59.000Z

286

ALSO INSIDE 300 years of chemistry, and counting | our iconic library unveiled | careers in the spotlight Winter 2012|13  

E-Print Network (OSTI)

1964 theory led 48 years later to the discovery of the Higgs boson, is now a name known worldwideWing the discovery at cern of a particle believed to be the higgs boson, a neW university centre to support research.ED.Ac.Uk/NEwSupdate tO WAtCh Peter higgS DiSCUSSing the higgS BOSOn, viSit WWW.eD.AC.UK/neWS/All-neWS/higgS-060712 tO WAt

Edinburgh, University of

287

Community College Connections Archive | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

"spotlighted" by OSTI. The community colleges are listed by Spotlight date. Pellissippi State Community College November 2011 Salt Lake Community College September 2011 Arapahoe...

288

NEAMS Quarterly Report April-June 2012  

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

This Nuclear Energy Advanced Modeling and Simulation (NEAMS) quarterly report includes highlights,a spotlight on personal achievements, accomplishments, milestones and a technical spotlight on...

289

OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...  

Office of Scientific and Technical Information (OSTI)

spotlight Topic Cool Connections by Kathy Chambers 24 May, 2012 in Products and Content .EDUconnections The coolest people are found on OSTI's .EDUconnections Spotlights. Penn...

290

OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...  

Office of Scientific and Technical Information (OSTI)

spotlights on declassified collections. This quarter the spotlight is on the Human Radiation Experiments collection. OpenNet provides easy, timely access to the Department of...

291

NEAMS Quarterly Report for July-September 2012  

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

The NEAMS quarterly report includes highlights, a spotlight on personal achievements, accomplishments, recent and upcoming milestones, and a technical spotlight on modeling precipitate nucleation.

292

TMS 2013: Annual Meeting & Exhibition - Advertising  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

293

TMS 2013: Annual Meeting & Exhibition - Networking Events  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

294

TMS 2013: Annual Meeting & Exhibition - Proceedings  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

295

TMS 2013: Annual Meeting & Exhibition - Students  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

296

TMS 2013: Annual Meeting & Exhibition - Housing and Travel  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

297

TMS 2013: Annual Meeting & Exhibition - Exhibition Prospectus  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

298

TMS 2013: Annual Meeting & Exhibition - Registration  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

299

TMS 2013: Annual Meeting & Exhibition - Virtual Hall  

Science Conference Proceedings (OSTI)

Workshops & Short Courses Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers.

300

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

serdp-estcp.orgNews-and-EventsIn-the-SpotlightOptimizing-Boiler-Efficiency-Through-Combustion-Control...

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

LED Surgical Task Lighting Scoping Study: A Hospital Energy Alliance Project  

SciTech Connect

Tungsten-halogen (halogen) lamps have traditionally been used to light surgical tasks in hospitals, even though they are in many respects ill-suited to the application due to the large percentage of radiant energy outside the visible spectrum and issues with color rendering/quality. Light-emitting diode (LED) technology offers potential for adjustable color and improved color rendition/quality, while simultaneously reducing side-effects from non-visible radiant energy. It also has the potential for significant energy savings, although this is a fairly narrow application in the larger commercial building energy use sector. Based on analysis of available products and Hospital Energy Alliance member interest, it is recommended that a product specification and field measurement procedure be developed for implementation in demonstration projects.

Tuenge, Jason R.

2011-01-17T23:59:59.000Z

302

155 Phase Diagram of Tetragonal Tungsten Bronze Material  

Science Conference Proceedings (OSTI)

We studied the different possibilities of the phase diagram according to the values of the Landau coefficients. The obtained phase diagram is compared with

303

Recovery of Tungsten from Waste Machining Alloy Scrap  

Science Conference Proceedings (OSTI)

Pressure Water Leaching Molybdenum and Nickel from Mo-Ni Ore of Black Shale without Reagent Rare Metals Separations with MRT Recovery of Gold (Au)...

304

Effect of Tungsten on the Microstructure and Mechanical Properties ...  

Science Conference Proceedings (OSTI)

... in the pulverize coal-fired power plants since higher operating temperature and .... Microstructural Observations and Electromagnetic Interference Shielding...

305

MOS structures with amorphous tungsten trioxide for capacitive humidity sensors  

Science Conference Proceedings (OSTI)

Electrical characteristics of the Al/a-WO{sub 3}/n-Si structure under conditions of water vapor sorption were studied. The parameters of this structure as a capacitive humidity sensor were determined.

Tutov, E. A. [Voronezh State University (Russian Federation)], E-mail: ssd126@phys.ru

2008-12-15T23:59:59.000Z

306

The Separation of Tungsten and Molybdenum by Ion Exchange ...  

Science Conference Proceedings (OSTI)

... Effect of Process Variables on Current Efficiency, Energy Consumption, and Surface Morphology ... Recovery of Rare Earth Metals form Wasted Magnet.

307

Process for fabricating articles of tungsten-nickel-iron alloy  

DOE Patents (OSTI)

A high density W--Ni--Fe alloy of composition 85-96% by weight W and the remainder Ni and Fe in a wt. ratio of 5:5-8:2 having enhanced mechanical properties is prepared by compacting the mixed powders, sintering the compact in reducing atmosphere to near theoretical density followed by further sintering at a temperature where a liquid phase is present, vacuum annealing, and cold working to achieve high uniform hardness.

Northcutt, Jr., Walter G. (Oak Ridge, TN); Snyder, Jr., William B. (Knoxville, TN)

1976-01-01T23:59:59.000Z

308

AB INITIO STUDY OF GRAIN BOUNDARY PROPERTIES OF TUNGSTEN ALLOYS  

SciTech Connect

Density functional theory was employed to investigate the grain boundary (GB) property of W-TM alloys (TM: fifth and sixth row transition metals). GB strengthening was found for Hf, Ta, Nb, Ru, Re, Os and Ir for 27{l_brace}525{r_brace} and to a lesser degree for 11{l_brace}323{r_brace}. Lower valence solutes strengthen the GB at certain substitutional sites, while higher valence elements enforce it at other positions. For 3{l_brace}112{r_brace}, the alloys exhibit reduced cleavage energies. Hence, allowing with TMs increases the GB cohesion more effectively for large-angle GBs whose cleavage energy is, in general, inherently lower than the low-angle ones. Electron density analysis elucidates the mechanism of charge addition or depletion of the GB bonding region upon TM substitution at various positions leading to stronger or weaker intergranular cohesion, respectively.

Setyawan, Wahyu; Kurtz, Richard J.

2012-04-17T23:59:59.000Z

309

Temperature Effects on Impact Energy of Tungsten Alloy  

Science Conference Proceedings (OSTI)

Conference Tools for Materials Science & Technology 2010 ... made of these alloys could defeat the armour irrespective of extreme weather conditions.

310

The evolution of molybdenum and tungsten olefin metathesis catalysts  

E-Print Network (OSTI)

Chapter 1: Reaction of Mo(NR)(CHR')(OTf)2(dme) (R = 2,6-i-Pr2C6H3 (Ar), 2,6-Me2C6H3 (Ar'), 2,6-Cl2C6H3 (ArCl), 1-adamantyl (Ad); R' = CMe2Ph, CMe3; dme = dimethoxyethane) with the lithium salt of ArCl-nacnac ([2,6-Cl2C6H ...

King, Annie Jinying Hannah

2010-01-01T23:59:59.000Z

311

Tungsten-doped thin film materials - Energy Innovation Portal  

A dielectric thin film material for high frequency use, including use as a capacitor, and having a low dielectric loss factor is provided, the film comprising a ...

312

Growth of Binary and Ternary Tungsten Oxide Nanowires with Large ...  

Science Conference Proceedings (OSTI)

Hybrid Aerogel/Nanorod Functional Materials for Energy and Sensing Applications ... of Compositionally, Structurally and Functionally Graded Ceramic Coatings...

313

Sintering Behaviors of Zrc Nanoparticle Dispersed Tungsten Based ...  

Science Conference Proceedings (OSTI)

A Study on the Stress Test of Truck Frames for Freight Trains A Study on the ... Defect Energetics and Fission Product Transport in ZrC Deformation Field and...

314

Growth Path Envelope Analysis of Grain Growth in Tungsten  

Science Conference Proceedings (OSTI)

Bayesian inference of grain boundary properties from heterogeneous data Comparison of Novel Microstructure Quantification Frameworks for Visualization, ...

315

Topical Report Tantalum 2.5% Tungsten Machinability Testing  

Science Conference Proceedings (OSTI)

Protection Association (NFPA). NFPA 484, Standard for Combustible Metals, Chapter 9 Tantalum and Annex E, supplemental Information on Tantalum require cutting oil be used when machining tantalum because it burns at such a high temperature that it breaks down the water in a water-based metalworking fluid (MWF). The NFPA guide devotes approximately 20 pages to this material. The Kansas City Plant (KCP) uses Fuchs Lubricants Ecocut Base 44 LVC as a MWF. This is a highly chlorinated oil with a high flash point (above 200 F). The chlorine is very helpful in preventing BUE (Built Up Edge) that occurs frequently with this very gummy material. The Ecocut is really a MWF additive that Fuchs uses to add chlorinated fats to other non-chlorinated MWF.

L. J. Lazarus

2009-09-02T23:59:59.000Z

316

Processing of Tungsten Carbide Reinforced Ceramic and Metal ...  

Science Conference Proceedings (OSTI)

Symposium, J. Materials and Processes for Enhanced Performance ... Separation and Recovery Process of Rare Metals from Oil Desulfurization Spent Catalyst.

317

B38: Reactive Sintering of Tungsten Carbide with Stainless Steel ...  

Science Conference Proceedings (OSTI)

A18: Effect of Local Alendronate Delivery on In Vivo Osteogenesis From PCL ... A7: On-the-fly System Design for High Precision/Ultra Fast/Wide Area Fabrication .... C19: Dissolution Behavior of Cu Under Bump Metallization in Ball Grid Array ... High Volume and Fast Turnaround Automated Inline TEM Sample Preparation.

318

NUCLEOSYNTHETIC TUNGSTEN ISOTOPE ANOMALIES IN ACID LEACHATES OF THE MURCHISON CHONDRITE: IMPLICATIONS FOR HAFNIUM-TUNGSTEN CHRONOMETRY  

Science Conference Proceedings (OSTI)

Progressive dissolution of the Murchison carbonaceous chondrite with acids of increasing strengths reveals large internal W isotope variations that reflect a heterogeneous distribution of s- and r-process W isotopes among the components of primitive chondrites. At least two distinct carriers of nucleosynthetic W isotope anomalies must be present, which were produced in different nucleosynthetic environments. The co-variation of {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W in the leachates follows a linear trend that is consistent with a mixing line between terrestrial W and a presumed s-process-enriched component. The composition of the s-enriched component agrees reasonably well with that predicted by the stellar model of s-process nucleosynthesis. The co-variation of {sup 182}W/{sup 184}W and {sup 183}W/{sup 184}W in the leachates provides a means for correcting the measured {sup 182}W/{sup 184}W and {sup 182}W/{sup 183}W of Ca-Al-rich inclusions (CAI) for nucleosynthetic anomalies using the isotopic variations in {sup 183}W/{sup 184}W. This new correction procedure is different from that used previously, and results in a downward shift of the initial {epsilon}{sup 182}W of CAI to -3.51 {+-} 0.10 (where {epsilon}{sup 182}W is the variation in 0.01% of the {sup 182}W/{sup 183}W ratio relative to Earth's mantle). This revision leads to Hf-W model ages of core formation in iron meteorite parent bodies that are {approx}2 Myr younger than previously calculated. The revised Hf-W model ages are consistent with CAI being the oldest solids formed in the solar system, and indicate that core formation in some planetesimals occurred within {approx}2 Myr of the beginning of the solar system.

Burkhardt, Christoph; Wieler, Rainer [Institute of Geochemistry and Petrology, Clausiusstrasse 25, ETH Zurich, CH-8092 Zurich (Switzerland); Kleine, Thorsten [Institut fuer Planetologie, Westfaelische Wilhelms-Universitaet Muenster, Wilhelm-Klemm-Strasse 10, D-48149 Muenster (Germany); Dauphas, Nicolas, E-mail: burkhardt@erdw.ethz.ch [Origins Laboratory, Department of the Geophysical Sciences and Enrico Fermi Institute, University of Chicago, 5734 South Ellis Avenue, Chicago, IL 60637 (United States)

2012-07-01T23:59:59.000Z

319

Climatic effects due to halogenated compounds in the earth's atmosphere  

SciTech Connect

Using a one-dimensional radiative-convective model, we perform a sensitivity study of the effect of ozone depletion in the stratosphere on the surface temperature. There could be a cooling of the surface temperature by approx.0.2 K due to chlorofluoromethane-induced ozone depletion at steady state (assuming 1973 release rates). This cooling reduces significantly the greenhouse effect due to the presence of chlorofluoromethanes. Carbon tetrafluoride has a strong ..nu../sub 3/ band at 7.8 ..mu..m, and the atmospheric greenhouse effect is shown to be 0.07 and 0.12 K (ppbv)/sup -1/ with and without taking into account overlap with CH/sub 4/ and N/sub 2/O bands. At concentration higher than 1 ppbv, absorption by the ..nu../sub 3/ band starts to saturate and the greenhouse effect becomes less efficient.

Wang, W.; Pinto, J.P.; Yung, Y.L.

1980-02-01T23:59:59.000Z

320

Halogen-Based Plasma Etching of Novel Field-Effect Transistor Gate Materials  

E-Print Network (OSTI)

and W. Gerhardt, Zur Chemie Der Platinmetalle - Ruo2Anorganische Und Allgemeine Chemie, 1963. 319(5-6): p. 327-A. Tebben, and W. Gerhardt, Zur Chemie Der Platinmetalle .5.

Kiehlbaugh, Kasi Michelle

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Halogen-elimination photochemistry and oxygen-activation chemistry of late transition-metal complexes  

E-Print Network (OSTI)

Multi-electron reaction chemistry, from both ground- and excited-state species, is at the heart of many topics in renewable energy and catalysis. In this thesis, two classes of reactions central to the themes of energy ...

Teets, Thomas S. (Thomas Sebastian)

2012-01-01T23:59:59.000Z

322

A Continuous Fast-Response Dual-Tracer Analyzer for Halogenated Atmospheric Tracer Studies  

Science Conference Proceedings (OSTI)

An apparatus for the simultaneous measurement of two tracers, sulfur hexafluoride (SF6) and a perfluorocarbon compound, is introduced. The new instrument is a modification of a commercially available fast-response, continuous analyzer for single ...

James P. Rydock; Brian K. Lamb

1994-10-01T23:59:59.000Z

323

Treatment and prevention systems for acid mine drainage and halogenated contaminants  

DOE Patents (OSTI)

Embodiments include treatments for acid mine drainage generation sources (10 perhaps by injection of at least one substrate (11) and biologically constructing a protective biofilm (13) on acid mine drainage generation source materials (14). Further embodiments include treatments for degradation of contaminated water environments (17) with substrates such as returned milk and the like.

Jin, Song (Fort Collins, CO); Fallgren, Paul H. (Laramie, WY); Morris, Jeffrey M. (Laramie, WY)

2012-01-31T23:59:59.000Z

324

Climatic Effects Due to Halogenated Compounds in the Earths Atmosphere  

Science Conference Proceedings (OSTI)

Using a one-dimensional radiative-convective model, we perform a sensitivity study of the effect of ozone depletion in the stratosphere on the surface temperature. There could be a cooling of the surface temperature by 0.2 K due to ...

Wei-Chyung Wang; Joseph P. Pinto; Yuk Ling Yung

1980-02-01T23:59:59.000Z

325

Program on Technology Innovation: Coastal Halogen Atmospheric Research on Mercury Deposition (CHARMeD)  

Science Conference Proceedings (OSTI)

Determining mercurys atmospheric transformation reactions is essential for atmospheric deposition models that are used for regulatory purposes. It is the oxidation of inorganic elemental Hg (Hg0) to its water-soluble ionic form (Hg2+) that determines the rate of Hg deposited in waterways. Substantial research has been done in the past on atmospheric Hg transformation reactions with ozone (O3) and the hydroxyl radical (OH), but O3 and OH may not be capable of fully causing mercurys observed oxidation an...

2009-08-11T23:59:59.000Z

326

Speaker biographies for the Fuel Cell Technologies Program Webinar titled Hydrogen Production by PEM Electrolysis … Spotlight on Giner and Proton  

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

Professional Bios - Kathy Ayers and Monjid Hamdan Professional Bios - Kathy Ayers and Monjid Hamdan Kathy Ayers, Director of Research, Proton Energy Systems Kathy Ayers is the Director of Research at Proton Energy Systems. She is responsible for developing the long term research direction for improvements in performance, reliability, and cost of Proton's electrolyzer cell stack as well as overseeing Proton's military and

327

3/30/10 10:43 AMElectrospinning self-healing polymer coating systems Page 1 of 2http://www.nanowerk.com/spotlight/spotid=15547.php  

E-Print Network (OSTI)

bioethanol production from woods Posted: Mar 25th, 2010 Images from the nanotechnology universe Posted: Mar

Braun, Paul

328

Method of Dehalogenation using Diamonds  

DOE Patents (OSTI)

A method for preparing olefins and halogenated olefins is provided comprising contacting halogenated compounds with diamonds for a sufficient time and at a sufficient temperature to convert the halogenated compounds to olefins and halogenated olefins via elimination reactions.

Farcasiu, Malvina; Kaufman, Phillip B.; Ladner, Edward P.; Anderson, Richard R.

1999-02-26T23:59:59.000Z

329

TMS 2013: Annual Meeting & Exhibition Home  

Science Conference Proceedings (OSTI)

Mar 21, 2013 ... Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers Student Activities.

330

TMS 2013: Annual Meeting & Exhibition - News  

Science Conference Proceedings (OSTI)

Mar 21, 2013 ... Spotlight Sessions Special Lectures Networking Events Awards Banquet For Young Professionals For Volunteers Student Activities.

331

Ris-R-1226(EN) 61 independently from us has been reported by Lee et al.1  

E-Print Network (OSTI)

for 15-20W conventional spotlights. (OPL) / Successful demonstration of a 3W RGB light emitting diode

332

2006: October - TMS  

Science Conference Proceedings (OSTI)

STUDENT CHAPTER SPOTLIGHT: SOUTH DAKOTA. SCHOOL OF MINES ... part community service group, the South Dakota School of Mines and. Technology...

333

Kinetic Modeling of Halogen-Based Plasma Etching of Complex Oxide Films and its Application to Predictive Feature Profile Simulation.  

E-Print Network (OSTI)

??In this work, a comprehensive framework for predicting etching behavior is developed using the test case of hafnium lanthanate (HfxLayOz) in Cl2/BCl3 chemistry, starting from (more)

Marchack, Nathan

0294-01-01T23:59:59.000Z

334

Kinetic Modeling of Halogen-Based Plasma Etching of Complex Oxide Films and its Application to Predictive Feature Profile Simulation  

E-Print Network (OSTI)

amounts of kinetic data (such as chemical reaction sets)kinetic parameters related to specific chemical reactionsChemical Engineering by Nathan Philip Marchack ABSTRACT OF THE DISSERTATION Kinetic

Marchack, Nathan

2012-01-01T23:59:59.000Z

335

Kinetic Modeling of Halogen-Based Plasma Etching of Complex Oxide Films and its Application to Predictive Feature Profile Simulation  

E-Print Network (OSTI)

the I E button (should light up green) and use the leftresult in the button being illuminated by a green light). Atin the button beginning to blink with a green light) and

Marchack, Nathan

2012-01-01T23:59:59.000Z

336

Kinetic Modeling of Halogen-Based Plasma Etching of Complex Oxide Films and its Application to Predictive Feature Profile Simulation  

E-Print Network (OSTI)

the effective work function (EWF) of the metal gate/stackand effectively reducing the EWF of the gate electrode. Apinning, thus allowing full EWF control without the need for

Marchack, Nathan

2012-01-01T23:59:59.000Z

337

Two versatile cofactors, flavin adenine dinucleotide and non-heme iron, involved in DNA repair and natural product halogenation  

E-Print Network (OSTI)

Cofactors assist enzymes with a variety of complex chemistries. Two versatile cofactors, flavin adenine dinucleotide (FAD) and non-heme iron, together with molecular oxygen as an oxidizing agent, perform a wide array of ...

Wong, Cintyu

2009-01-01T23:59:59.000Z

338

Building Technologies Office: Home Energy Score Past Webinars and Video  

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

Score Past Score Past Webinars and Video Spotlights to someone by E-mail Share Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on Facebook Tweet about Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on Twitter Bookmark Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on Google Bookmark Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on Delicious Rank Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on Digg Find More places to share Building Technologies Office: Home Energy Score Past Webinars and Video Spotlights on AddThis.com... About Take Action to Save Energy Partner With DOE Activities Solar Decathlon

339

michalsky-98.pdf  

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

Calibration of ARM Spectral Shortwave Radiometers Calibration of ARM Spectral Shortwave Radiometers J. J. Michalsky, J. L. Berndt, P. W. Kiedron, and L. C. Harrison Atmospheric Sciences Research Center State University of New York at Albany Albany, New York Abstract Absolute calibration of spectral shortwave radiometers is typically performed using National Institute of Standards & Technology (NIST) or NIST-traceable spectral lamps. In this paper, we compare 18 spectral irradiance lamps from NIST and three commercial vendors all using the same spectrometer to assess their agreement with each other and the NIST standards. The NIST procedure is followed for the 1000W FEL lamps from NIST, Optronics, and EG&G. A modified calibration procedure developed by LI-COR is followed for their 200W tungsten-halogen lamps. Results

340

Spectrum of second-harmonic radiation generated from incoherent light  

SciTech Connect

We report on the development of the theory of second-harmonic generation by an incoherent pump with broad angular and frequency spectra. We show that spatial as well as temporal walk-off effects in a nonlinear crystal result in angular dispersion of the second-harmonic radiation. We demonstrate that the acceptance angle in second-harmonic generation by incoherent light is caused by the width of the pump angular spectrum and the resulting angular dispersion of second-harmonic radiation but does not depend on crystal length. In this case the frequency spectrum of second-harmonic radiation is determined by its angular dispersion and the pump angular spectrum. The theory is supported by an experiment in which a LiIO{sub 3} crystal was pumped by a tungsten halogen lamp.

Stabinis, A.; Pyragaite, V.; Tamosauskas, G.; Piskarskas, A. [Department of Quantum Electronics, Vilnius University, Sauletekio Avenue 9, Building 3, LT-10222 Vilnius (Lithuania)

2011-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

A Well-Defined, Silica-Supported Tungsten Imido Alkylidene Olefin Metathesis Catalyst  

E-Print Network (OSTI)

olefin metathesis catalyst. Bouchra Rhers, a Alain Salameh,active propene metathesis catalyst, which can achieve 16000W-based olefin metathesis catalyst through the reaction of [

2006-01-01T23:59:59.000Z

342

Ab initio investigation of barium-scandium-oxygen coatings on tungsten for electron emitting cathodes  

E-Print Network (OSTI)

relaxor by heating it above TCurie and/or depoling below a critical electric field Ecr(T). The Curie

Wisconsin at Madison, University of

343

Tritium Absorption of CO-Deposited Carbon Films, Graphite and Polycrystalline Tungsten  

Science Conference Proceedings (OSTI)

Interaction with Materials / Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2)

Y. Nobuta et al.

344

Utilization of geothermal energy in the mining and processing of tungsten ore. 2nd quarterly report  

DOE Green Energy (OSTI)

The completed geochemical analysis of groundwater in the Pine Creek area for evaluation of the geothermal potential of this location is presented. Also included is an environmental constraints analysis of Pine Creek noting any potential environmental problems if a geothermal system was developed onsite. Design of a geothermal system is discussed for site-specific applications and is discussed in detail with equipment recommendations and material specifications. A preliminary financial, economic, and institutional assessment of geothermal system located totally on Union Carbide property at Pine Creek is included. (MHR)

Erickson, M.V.; Willens, C.A.; Walter, K.M.; Carrico, R.L.; Lowe, G.D.; Lacy, S.B.

1980-06-01T23:59:59.000Z

345

Diagnostic of charge balance in high-temperature tungsten plasmas using LLNL EBIT  

Science Conference Proceedings (OSTI)

Diagnostic of high-temperature M-shell W plasmas is challenging because of contribution of numerous ionization stages in a relatively narrow x-ray spectral region. A method using LLNL EBIT data generated at different electron beam energies has been established for the identification of prominent spectral features and for the determination of charge balance in x-ray M-shell W spectra between 3.5 and 8.5 A . It extends previous work [A. S. Safronova et al., Can. J. Phys. 86, 267 (2008)] which used only Ni-like lines to include the neighboring ionization stages. This diagnostic procedure was tested with results from Z-pinch plasmas produced on the 1 MA pulse power generator Zebra at UNR. These results are of particular importance for fusion research.

Osborne, G. C.; Safronova, A. S.; Kantsyrev, V. L.; Safronova, U. I.; Yilmaz, M. F.; Williamson, K. M.; Shrestha, I. [Physics Department, University of Nevada, Reno, Nevada 89557 (United States); Beiersdorfer, P. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

2008-10-15T23:59:59.000Z

346

Tungsten species in natural ferromanganese oxides related to its different behavior from molybdenum in oxic ocean  

E-Print Network (OSTI)

Science, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima

347

Design and global optimization of high-efficiency solar thermal systems with tungsten cermets  

E-Print Network (OSTI)

Solar thermal, thermoelectric, and thermophotovoltaic (TPV) systems have high maximum theoretical efficiencies; experimental systems fall short because of losses by selective solar absorbers and TPV selective emitters. To ...

Chester, David A.

348

Evaluation of Nuclear Activation of Tungsten Plates for Future Modeling of a Medical Accelerator  

Science Conference Proceedings (OSTI)

Shielding Materials / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Measurements and Instrumentation

Bin Han; Bryan Bednarz; Yaron Danon; Robert Block; X. George Xu

349

Tungsten Oxide and Heteropoly Acid Based System for Ultra-High...  

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

for the Oxygen Reduction Reaction", K. Mason, M. Kuo, K. Horning, K. Neyerlin, and A. Herring, Journal of the Electrochemical Society (Submitted June 2012). 5. "Durability...

350

Investigation of coronal plasma dynamics in tungsten and carbon X-pinches  

E-Print Network (OSTI)

of the use x of carbon fibers in an x-pinch load using a 250of pulsed power driven carbon fibers have so far beenfirst investigations of carbon fiber x-pinches, where the

Madden, Robert Edward

2008-01-01T23:59:59.000Z

351

Method of fabricating thin-walled articles of tungsten-nickel-iron alloy  

SciTech Connect

The present invention relates to a method for fabricating thin-walled high-density structures oftungsten-nickel-iron alloys. A powdered blend of the selected alloy constituents is plasma sprayed onto a mandrel having the desired article configuration. The sprayed deposit is removed from the mandrel and subjected to liquid phase sintering to provide the alloyed structure. The formation of the thin-walled structure by plasma spraying significantly reduces shrinkage, and cracking while increasing physical properties of the structure over that obtainable by employing previously known powder metallurgical procedures.

Hovis, Jr., Victor M. (Kingston, TN); Northcutt, Jr., Walter G. (Oak Ridge, TN)

1982-01-01T23:59:59.000Z

352

Synthesis and studies of molybdenum and tungsten complexes for dinitrogen reduction  

E-Print Network (OSTI)

A series of monopyrroletriamine ligands [Arpyr(Ar')2]H3 of the form ArC4H2NHCH2N(CH2CH2NHAr')2 (Ar = 2,4,6-mesityl (Mes), 2,4,6-triisopropylphenyl (TRIP); Ar' = C6F5, 2-tolyl (o-tol), naphthyl, 3,5-(2,4,6-triisopropylphenyl)phenyl ...

Chin, Jia Min

2010-01-01T23:59:59.000Z

353

Tungsten black absorber for solar light with wide angular operation range Eden Rephaeli1,a  

E-Print Network (OSTI)

, a material with a high melting point, since many solar thermal applications, especially solar thermal photovolatics,6,7 require absorbers that can withstand high temperatures. While there is significant amount-difference time-domain method.15 To describe the effect of material dispersion and absorption in the time

Fan, Shanhui

354

The Austenite -> Ferrite Transformation in Tungsten Steels and Some Other Ternary Steels  

E-Print Network (OSTI)

. The Quantimet 720 is attached with a Reichart optical microscope/epidiascope and Videcon/plumbicon television scanner which transfers the image analogue to a computer system. The image is composed of up to 705x896 picture points or pixels and discriminates... chart recorder. Standard tables are used to identify the element from crystal spectrometer readings. 23 (b) Energy-Dispersive X-ray Spectrometer (EDS) In this method, the X-ray signal from the samples passes through a thin beryllium window into a cooled...

Sahay, Sunil Kishore

1986-11-05T23:59:59.000Z

355

Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system  

DOE Patents (OSTI)

A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.

Knapp, Jr., Furn F. (Oak Ridge, TN); Lisic, Edward C. (Cookeville, TN); Mirzadeh, Saed (Knoxville, TN); Callahan, Alvin P. (Harriman, TN)

1993-01-01T23:59:59.000Z

356

Tungsten-188/carrier-free rhenium-188 perrhenic acid generator system  

DOE Patents (OSTI)

A generator system for providing a carrier-free radioisotope in the form of an acid comprises a chromatography column in tandem fluid connection with an ion exchange column, the chromatography column containing a charge of a radioactive parent isotope. The chromatography column, charged with a parent isotope, is eluted with an alkali metal salt solution to generate the radioisotope in the form of an intermediate solution, which is passed through the ion-exchange column to convert the radioisotope to a carrier-free acid form.

Knapp, Jr., Furn F. (Oak Ridge, TN); Lisic, Edward C. (Cookeville, TN); Mirzadeh, Saed (Knoxville, TN); Callahan, Alvin P. (Harriman, TN)

1994-01-01T23:59:59.000Z

357

A NEW FAILURE MECHANISM BY SCANNING ELECTRON MICROSCOPE INDUCED ELECTRICAL BREAKDOWN OF TUNGSTEN WINDOWS IN  

E-Print Network (OSTI)

WINDOWS IN INTEGRATED CIRCUIT PROCESSING BY DAVID M. SHUTTLEWORTH A THESIS PRESENTED TO THE GRADUATE.............................................................................10 2.1.2 Mechanics of the Window Liner.4. THE PROCEDURE - EXPERIMENT ONE:WINDOW-1........ERROR! BOOKMARK NOT DEFINED. 3.5. THE PROCEDURE: EXPERIMENT 2

Pearton, Stephen J.

358

Physical properties of erbium implanted tungsten oxide films deposited by reactive dual magnetron sputtering  

E-Print Network (OSTI)

ion implantation, electrical resistivity, optical propertiesfocus on the electrical resistivity and optical propertiesexhibited very low electrical resistivity of 1.75 10 -3 ?

Mohamed, Sodky H.; Anders, Andre

2006-01-01T23:59:59.000Z

359

Retention and Surface Pore Formation in Helium Implanted Tungsten as a Fusion First Wall Material  

Science Conference Proceedings (OSTI)

High Average Power Laser and Other IFE R&D / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1)

S. J. Zenobia; G. L. Kulcinski

360

Rohm and Haas: Furnace Replacement Project Saves Energy and Improves Production at a Chemical Plant  

Science Conference Proceedings (OSTI)

This DOE Industrial Technologies Program spotlight describes how Rohm and Haas's Deer Park, Texas, chemical plant reduced natural gas usage and energy costs by replacing inefficient furnace equipment.

Not Available

2006-02-01T23:59:59.000Z

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


361

Page not found | Department of Energy  

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

(SIPs) are prefabricated structural elements used to build walls, ceilings, floors, and roofs. http:energy.govenergysaverarticlessolar-decathlon-technology-spotlight-structu...

362

User account | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

.EDUconnections Bookmark and Share Home Spotlight Archive Contact Search this site: Search User account Log in Request new password Username: * Enter your .EDUconnections username....

363

Contact | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

.EDUconnections Bookmark and Share Home Spotlight Archive Contact Search this site: Search Contact Your name: * Your e-mail address: * Subject: * Message: * Send message Some links...

364

LED Provides Effective and Efficient Lighting in Freezer Storage  

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

by example, saving energy and taxpayer dollars in federal facilities Spotlight on Design LED Provides Effective and Efficient Lighting in Freezer Storage Room New lighting...

365

DOE Science Showcase - Nanotechnology  

Office of Scientific and Technical Information (OSTI)

valuable way to spotlight needs and target resources in this critical area of science and technology. Nanotechnology Research Results in DOE Databases DOepatents ScienceCinema...

366

DOE Solar Decathlon: News Blog Solar Decathlon 2013  

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

Solar Decathlon 2013, Stanford, Team Austria, Team Ontario, Teams No Comments Technology Spotlight: Energy-Efficient Lighting Tuesday, October 8, 2013 By Solar...

367

DOE Connects with Higher Education Community  

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

EDUconnections is a year old project, and through it we celebrate our university partners, spotlighting a different higher education institution every month.

368

OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...  

Office of Scientific and Technical Information (OSTI)

programs Topic Cool Connections by Kathy Chambers 24 May, 2012 in Products and Content .EDUconnections The coolest people are found on OSTI's .EDUconnections Spotlights. Penn...

369

Block copolymer electrolytes for lithium batteries.  

E-Print Network (OSTI)

??Increasing interest in renewable energy technologies has recently brought compact and cost-effective energy storage into the spotlight. A wide variety of applications could benefit from (more)

Hudson, William Rodgers

2011-01-01T23:59:59.000Z

370

EMSL: News - Newsletter  

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

issue In this issue: The Molecular Bond, fourth issue EMSL Director's Message A Perfect Storm: Radiochemistry Annex User Spotlight: A Night and Day Difference Imaging provides new...

371

Alexis Powers | Department of Energy  

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

Alexis Powers About Us Alexis Powers Most Recent Affordability Contest Adds New Dimension to Solar Decathlon 2011 September 27 Solar Decathlon Technology Spotlight: Structural...

372

Compiled by the Wisconsin Legislative Reference Bureau Prepared by Ryan Miller, Legislative Analyst  

E-Print Network (OSTI)

The Wisconsin Scorecard is a compendium of 50-state rankings spotlighting Wisconsin as it compares to other states. It is intended to be a handy reference guide for

How Wisconsin; Other States; How Wisconsin; Compares Other States; Layout Lynn Lemanski; Senior Publications; Cover Design; Kathleen Sitter; Senior Publications

2011-01-01T23:59:59.000Z

373

TMS News Article  

Science Conference Proceedings (OSTI)

Sep 8, 2009 ... Pittsburgh Takes the LEED, this month's Spotlight feature in the Materials and Society Community, traces how the city cleaned itself up, both...

374

Nuclear Analytical Chemistry News  

Science Conference Proceedings (OSTI)

... a Nuclear Spotlight on Illegal Weapons Material Release Date: 10/26/2006 Researchers at the National Institute of Standards and Technology ( ...

2010-10-20T23:59:59.000Z

375

Power Manage Computers to Save Up to $50 Per Computer Annually...  

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

IT Campaign > Power Manage Computers Put Your Computers to Sleep Save up to 50 per Computer Annually Low carbon IT campaign spotlight What is computer power management? Computer...

376

Evaluation of the operational performance of a parabolic trough CSP plant.  

E-Print Network (OSTI)

?? Renewable energy technologies are in the spotlight. On the one hand, they are called to have a leading role in the battle against climate (more)

Ruiz Sanches, Carlos; Guillermo

2013-01-01T23:59:59.000Z

377

PNNL: Breakthroughs Magazine - Winter 2000-2001  

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

0-2001 issue Spotlight on nanotechnology Breakthroughs Magazine Breakthroughs Archive In this issue... Cover Editor's Screen Contents At A Glance Special Report (cover story)...

378

Virginia | Department of Energy  

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

, 2010 Photo by Kelly Shimoda Lumenhaus Shows Off Solar in Times Square Solar Decathlon gets a spotlight January 22, 2010 CX-000710: Categorical Exclusion Determination Virginia...

379

Repaving the Road for Electric Vehicles, Clean Cities Now, Vol...  

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

our other alternative fuels. Our Technology Spotlight details the benefits of propane conversions and what you need to know to take advantage of this cost-effective option...

380

Slide21 | OSTI, US Dept of Energy, Office of Scientific and Technical...  

Office of Scientific and Technical Information (OSTI)

at DOE Laboratories and Scientific User Facilities. * Great visibility off of the DOE Home Page. * Some Spotlights from the past year: *Iowa State University, Ames Laboratory...

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Page not found | Department of Energy  

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

used to build walls, ceilings, floors, and roofs. http:energy.govenergysaverarticlessolar-decathlon-technology-spotlight-structural-insulated-panels Article 2011 Fuel Economy...

382

July 2013  

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

look after themselves Spotlights Interplanetary mission fission New nuclear fission reactor small enough to reliably power future spacecraft Powered by plastic Revealing how to...

383

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

S. , 1990. Uranium and (super 10) Be enrichments by fluidsabove 300 C. (Fig. Enrichments of uranium 238 U over 230 Th

Wei, Wei

2007-01-01T23:59:59.000Z

384

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

and Donval, J. P. , 2005. Chlorine isotopic compositions ofand Davis, S. , 1984. Natural chlorine isotope variations.precision measurement of chlorine stable isotope ratios.

Wei, Wei

2007-01-01T23:59:59.000Z

385

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

fluids fuel extremophilic Archaea on a Mariana forearc serpentinite mud volcano: Ocean Drillingfluid flow in the western Nankai subduction zone, Japan. Proceedings of the Ocean Drilling

Wei, Wei

2007-01-01T23:59:59.000Z

386

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

the oceans. Chemical Geology: Isotope Geoscience section 80(Geology and Geophysics, Louisiana State University, for her Li isotopeisotopes and origin of high-Cl magmas of the Stillwater Complex, Montana. Geology

Wei, Wei

2007-01-01T23:59:59.000Z

387

Fluid origins, paths, and fluid-rock reactions at convergent margins, using halogens, Cl stable isotopes, and alkali metals as geochemical tracers  

E-Print Network (OSTI)

range kg/yr Cl sources and sinks Water or rock mass mol/kgtemperature at the source of fluid-rock reactions, asto identify the fluid-rock reactions at source. In addition,

Wei, Wei

2007-01-01T23:59:59.000Z

388

Mitigating Greenhouse Gas Emissions: Voluntary Reporting  

U.S. Energy Information Administration (EIA)

Carbon Sequestration ..... 199 62 Halogenated Substances ..... 22 18 Other Emissions Reductions ..... 59 45 Total ...

389

DETECTION OF KNOWN AND UNKNOWN NATURALLY ...  

Science Conference Proceedings (OSTI)

... contaminants. The predominant sources of halogenated secondary metabolites are sponges, algae and cyanobacteria. ...

390

Americas  

E-Print Network (OSTI)

E-3 Product name of Norit Americas halogenated powdered activated carbon FF Fabric Filter (baghouse) FGD

Ravi Strivastava; Technologies Corp; Cold-side Electrostatic Precipitator; Electrostatic Precipitator; Hot-side Electrostatic Precipitator

2010-01-01T23:59:59.000Z

391

Miscellaneous electricity use in U.S. homes  

E-Print Network (OSTI)

efficiency of fans for fuel-fired furnaces, and replacing halogen torchieres with more efficient CFL

Sanchez, Marla C.; Koomey, Jonathan G.; Moezzi, Mithra M.; Meier, Alan; Huber, Wolfgang

1999-01-01T23:59:59.000Z

392

University Connections | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

Research on the "Go" with OSTI mobile Research on the "Go" with OSTI mobile Research on the "Go" with OSTI mobile Get the EDUconnections widget and many other great free widgets at Widgetbox! University Spotlight Program The U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI) connects with university research departments and libraries across the nation to increase awareness of DOE's valuable scientific and technical information. OSTI "spotlights" individual universities with connections to DOE scientific research programs. Visit our spotlight below to see examples of universities that are supporting and advancing scientific research and discovery! University Spotlight Visit our Spotlight Archive to learn about great colleges and universities

393

Aluminum and tungsten X-pinch experiments on 100 kA, 100 ns linear transformer driver stage  

Science Conference Proceedings (OSTI)

X-pinch experiments have been carried out on a 100 kA, 100 ns linear transformer driver stage recently built up. The X-pinches exhibited a source size of about 10 {mu}m, a pulse duration of 3 ns, 3-5 keV radiation energy of 3.9 mJ, and a burst time jitter of tens of nanosecond with the 2-wire 8 {mu}m W X-pinch load. The generator output current and the X-pinch characteristics depended on the X-pinch wire materials in the tests. X-ray backlighting images from the insects showed the significant phase-contrast effect.

Wu Jian [Department of Engineering Physics, Tsinghua University, Beijing 10086 (China); Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Sun Tieping; Wu Gang; Wang Liangping; Han Juanjuan; Li Mo; Cong Peitian; Qiu Aici [Northwest Institute of Nuclear Technology, Xi'an 710024 (China); Lv Min [Department of Engineering Physics, Tsinghua University, Beijing 10086 (China)

2011-05-15T23:59:59.000Z

394

Application of Tritium Tracer Technique to Determination of Hydrogen Diffusion Coefficients and Permeation Rate near Room Temperature for Tungsten  

Science Conference Proceedings (OSTI)

Interaction with Materials / Proceedings of the Ninth International Conference on Tritium Science and Technology (Part 2)

T. Ikeda; T. Otsuka; T. Tanabe

395

Two-Component Tungsten Powder Injection Molding for Mass Production of He-Cooled DEMO Divertor Parts  

Science Conference Proceedings (OSTI)

PFC and FW Materials Technology / Proceedings of the Fifteenth International Conference on Fusion Reactor Materials, Part A: Fusion Technology

Steffen Antusch; Marcus Mller; Prachai Norajitra; Gerald Pintsuk; Volker Piotter; Hans-Joachim Ritzhaupt-Kleissl; Tobias Weingrtner

396

Nitride, imide, and azide chemistry of anilide-supported tungsten and uranium complexes by Alexander Ray Fox.  

E-Print Network (OSTI)

The uranium(III) tris(anilide) complex (THF)U(N[t-Bu]Ar) 3 reacts with MN 3 (M = Na, [N(n-Bu) 4]) to form the bimetallic diuranium(IV/IV) salts M[(p-N)(U(N[t-Bu]Ar) 3)2]. The stability of the U=N=U core across multiple ...

Fox, Alexander Ray, 1979-

2010-01-01T23:59:59.000Z

397

Quartz crystal microbalance study of tungsten atomic layer deposition using WF6 and Si2H6  

E-Print Network (OSTI)

(disilane). In this paper, W ALD is explored using in situ quartz crystal microbalance (QCM) measurements for disilane exposures > 4?104 L. The W ALD growth rate was also weakly temperature

George, Steven M.

398

Environmental impacts of lighting technologies - Life cycle assessment and sensitivity analysis  

SciTech Connect

With two regulations, 244/2009 and 245/2009, the European Commission recently put into practice the EuP Directive in the area of lighting devices, aiming to improve energy efficiency in the domestic lighting sector. This article presents a comprehensive life cycle assessment comparison of four different lighting technologies: the tungsten lamp, the halogen lamp, the conventional fluorescent lamp and the compact fluorescent lamp. Taking advantage of the most up-to-date life cycle inventory database available (ecoinvent data version 2.01), all life cycle phases were assessed and the sensitivity of the results for varying assumptions analysed: different qualities of compact fluorescent lamps (production phase), different electricity mixes (use phase), and end-of-life scenarios for WEEE recycling versus municipal solid waste incineration (disposal phase). A functional unit of 'one hour of lighting' was defined and the environmental burdens for the whole life cycle for all four lamp types were calculated, showing a clearly lower impact for the two gas-discharge lamps, i.e. the fluorescent and the compact fluorescent lamp. Differences in the product quality of the compact fluorescent lamps reveal to have only a very small effect on the overall environmental performance of this lamp type; a decline of the actual life time of this lamp type doesn't result in a change of the rank order of the results of the here examined four lamp types. It was also shown that the environmental break-even point of the gas-discharge lamps is reached long before the end of their expected life-span. All in all, it can be concluded that a change from today's tungsten lamp technology to a low-energy-consuming technology such as the compact fluorescent lamp results in a substantial environmental benefit.

Welz, Tobias; Hischier, Roland, E-mail: Roland.Hischier@empa.ch; Hilty, Lorenz M.

2011-04-15T23:59:59.000Z

399

Minority Educational Institutions Student Partnership Program (MEISPP)  

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

Minority Educational Institutions Student Partnership Program Minority Educational Institutions Student Partnership Program (MEISPP) Internship Spotlight Minority Educational Institutions Student Partnership Program (MEISPP) Internship Spotlight Minority Educational Institutions Student Partnership Program (MEISPP) MEISPP offers talented undergraduate and graduate students summer internship positions with the U.S. Department of Energy and its national laboratories. Positions involve scientific research or a focus on policy, business, and government relations. All internships include paid lodging, round trip airfare, and monetary compensation. Check out the newsletters below, created by MEISPP participants. MEISPP Internship Spotlight More Documents & Publications FY 2009 Strategic Plan for Minority Education Programs

400

Universities & Libraries | OSTI, US Dept of Energy, Office of Scientific  

Office of Scientific and Technical Information (OSTI)

Universities & Libraries Universities & Libraries .EDUconnections | Library Tools OSTI connects with university research departments and libraries across the nation to increase awareness of DOE's valuable scientific and technical information. .EDUconnections OSTI "spotlights" individual universities with connections to DOE scientific research programs. Visit the "Spotlights" at .EDUconnections to see examples of universities that are supporting and advancing scientific research and discovery! community college connection OSTI "spotlights" community colleges across America that provide opportunities in science and technology. Library Tools DOE MARC Records System Open Archives Initiative (OAI) Server XML Data Services OSTI Homepage Mobile Gallery Subscribe to RSS OSTI Blog Get Widgets Get Alert Services

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


401

Minority Educational Institutions Student Partnership Program (MEISPP)  

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

Minority Educational Institutions Student Partnership Program Minority Educational Institutions Student Partnership Program (MEISPP) Internship Spotlight Minority Educational Institutions Student Partnership Program (MEISPP) Internship Spotlight Minority Educational Institutions Student Partnership Program (MEISPP) MEISPP offers talented undergraduate and graduate students summer internship positions with the U.S. Department of Energy and its national laboratories. Positions involve scientific research or a focus on policy, business, and government relations. All internships include paid lodging, round trip airfare, and monetary compensation. Check out the newsletters below, created by MEISPP participants. MEISPP Internship Spotlight More Documents & Publications Independent Oversight Inspection of Environment, Safety, and Health

402

Advanced Lighting Technologies Application Guidelines: 1990  

SciTech Connect

The Advanced Lighting Technologies Application Guidelines document consists of eight guidelines that provide an overview of specific lighting technologies and design application techniques utilizing energy-efficient lighting products. Lighting Design Practice assesses energy-efficient lighting strategies and explains how to obtain quality lighting design and consulting services. Luminaries and Lighting Systems surveys advanced lighting fixture products designed to take advantage of current energy-efficient lamp technologies and includes luminaire tables to allow users to collect photometric performance characteristics for common commercial luminaires. Each of the remaining six guidelines -- Computer-Aided Lighting Design, Energy-efficient and Electronic Ballasts, Full-Size Fluorescent Lamps, Compact Fluorescent Lamps, Conventional Shape Tungsten-Halogen Lamps, and Compact Metal Halide and White High Pressure Sodium Lamps -- includes a technology overview section, a description of current products available on the market, and an applications section. The document is intended for use by electric utility personnel involved in lighting programs, lighting designers, electrical engineers, architects, lighting manufacturers' representatives, and other lighting professionals.

Eley, C. (Eley (Charles) Associates, San Francisco, CA (United States))

1992-09-01T23:59:59.000Z

403

Advanced lighting guidelines, 1993: Revision 1  

SciTech Connect

The 1993 Advanced Lighting Guidelines document consists of twelve guidelines that provide an overview of specific lighting technologies and design application techniques utilizing energy-efficient lighting practice. Lighting Design Practice assesses energy-efficient lighting strategies, discusses lighting issues, and explains how to obtain quality lighting design and consulting services. Luminaires and Lighting Systems surveys luminaire equipment designed to take advantage of advanced technology lamp products and includes performance tables that allow for accurate estimation of luminaire light output and power input. The additional ten guidelines -- Computer-Aided Lighting Design, Energy-Efficient Fluorescent Ballasts, Full-Size Fluorescent Lamps, Compact Fluorescent Lamps, Tungsten- Halogen Lamps, Metal Halide and HPS Lamps, Daylighting and Lumen Maintenance, Occupant Sensors, Time Scheduling Systems, and Retrofit Control Technologies -- each provide a product technology overview, discuss current products on the lighting equipment market, and provide application techniques. This document is intended for use by electric utility personnel involved in lighting programs, lighting designers, electrical engineers, architects, lighting manufacturers' representatives, and other lighting professionals.

Eley, C.; Tolen, T.M. (Eley Associates, San Francisco, CA (United States)); Benya, J.R. (Luminae Souter Lighting Design, San Francisco, CA (United States)); Rubinstein, F.; Verderber, R. (Lawrence Berkeley Lab., CA (United States))

1993-05-01T23:59:59.000Z

404

Enhanced life ion source for germanium and carbon ion implantation  

SciTech Connect

Germanium and carbon ions represent a significant portion of total ion implantation steps in the process flow. Very often ion source materials that used to produce ions are chemically aggressive, especially at higher temperatures, and result in fast ion source performance degradation and a very limited lifetime [B.S. Freer, et. al., 2002 14th Intl. Conf. on Ion Implantation Technology Proc, IEEE Conf. Proc., p. 420 (2003)]. GeF{sub 4} and CO{sub 2} are commonly used to generate germanium and carbon beams. In the case of GeF{sub 4} controlling the tungsten deposition due to the de-composition of WF{sub 6} (halogen cycle) is critical to ion source life. With CO{sub 2}, the materials oxidation and carbon deposition must be controlled as both will affect cathode thermionic emission and anti-cathode (repeller) efficiencies due to the formation of volatile metal oxides. The improved ion source design Extended Life Source 3 (Eterna ELS3) together with its proprietary co-gas material implementation has demonstrated >300 hours of stable continuous operation when using carbon and germanium ion beams. Optimizing cogas chemistries retard the cathode erosion rate for germanium and carbon minimizes the adverse effects of oxygen when reducing gas is introduced for carbon. The proprietary combination of hardware and co-gas has improved source stability and the results of the hardware and co-gas development are discussed.

Hsieh, Tseh-Jen; Colvin, Neil; Kondratenko, Serguei [Axcelis Technologies, Inc. 108 Cherry Hill Drive, Beverly, MA 01915 (United States)

2012-11-06T23:59:59.000Z

405

Advanced lighting guidelines: 1993. Final report  

Science Conference Proceedings (OSTI)

The 1993 Advanced Lighting Guidelines document consists of twelve guidelines that provide an overview of specific lighting technologies and design application techniques utilizing energy-efficient lighting practice. Lighting Design Practice assesses energy-efficient lighting strategies, discusses lighting issues, and explains how to obtain quality lighting design and consulting services. Luminaires and Lighting Systems surveys luminaire equipment designed to take advantage of advanced technology lamp products and includes performance tables that allow for accurate estimation of luminaire light output and power input. The additional ten guidelines -- Computer-Aided Lighting Design, Energy-Efficient Fluorescent Ballasts, Full-Size Fluorescent Lamps, Compact Fluorescent Lamps, Tungsten-Halogen Lamps, Metal Halide and HPS Lamps, Daylighting and Lumen Maintenance, Occupant Sensors, Time Scheduling Systems, and Retrofit Control Technologies -- each provide a product technology overview, discuss current products on the lighting equipment market, and provide application techniques. This document is intended for use by electric utility personnel involved in lighting programs, lighting designers, electrical engineers, architects, lighting manufacturers` representatives, and other lighting professionals.

Eley, C.; Tolen, T.M. [Eley Associates, San Francisco, CA (United States); Benya, J.R. [Luminae Souter Lighting Design, San Francisco, CA (United States); Rubinstein, F.; Verderber, R. [Lawrence Berkeley Lab., CA (United States)

1993-12-31T23:59:59.000Z

406

Solid bromine complexers  

DOE Patents (OSTI)

The cell of the invention comprises a housing, a zinc or cadmium anode, a chemically non-reactive counterelectrode and cathodic halogen. The cathodic halogen is selected from chlorine and bromine, and preferably is bromine. The cell also is provided with an aqueous metal halide containing electrolyte in which the metal ions are of the same metal as the metal of the anode and halide anions are of the same halogen as the cathodic halogen material. Importantly, in the present invention, anion exchange resins provide a convenient means for storing the halogen generated during charging of the cell and providing a source of halogen to be used in the discharge of the cell.

Grimes, Patrick G. (Westfield, NJ)

1987-01-20T23:59:59.000Z

407

Field Assisted Sintering IV (SPS & Microwave)  

Science Conference Proceedings (OSTI)

Oct 11, 2012 ... 3 ?m depleted uranium dioxide powder within a tungsten super alloy matrix produced from sub-micron tungsten powders. 9:20 AM Invited

408

Spark Plasma Sintering: Processing of Nuclear Materials  

Science Conference Proceedings (OSTI)

3 ?m depleted uranium dioxide powder within a tungsten super alloy matrix produced from sub-micron tungsten powders. Proceedings Inclusion? Undecided ...

409

Investigation surface faint-sliver defects of cold-rolling IF steel sheets ...  

Science Conference Proceedings (OSTI)

Sintering Kinetics of SPS Tungsten and Tungsten-Ceria Cermets Small Punch Creep of Service-Exposed SUS 316 HTB Superheater Tubes of Fossil Boilers.

410

Determining the Uncertainty of X-Ray Absorption ...  

Science Conference Proceedings (OSTI)

... The apparatus uses a tungsten filament and a tungsten target to generate x rays and the detector contains a CZT crystal. ...

2005-01-28T23:59:59.000Z

411

Search Results  

Science Conference Proceedings (OSTI)

Search Results. CAS Number, Formula, Name, State, JANAF Table, Links. 7440-33-7, W, Tungsten, cr,l, view, ... 7440-33-7, W, Tungsten, cr, view, ...

412

Utah's "Solar For Schools" Program Is Bringing New Light to Education  

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

Salt Lake City's Hillside Middle School was in the spotlight Monday as the focal point for the new Solar for Schools program in Utah, which is supported by funds from the Recovery Act.

413

Kodak: MotorMaster+ Is the Foundation for Energy Efficiency at a Chemical and Imaging Technologies Plant (Revised)  

SciTech Connect

This DOE Industrial Technologies Program spotlight describes how Kodak is saving 5.8 million kWh and $664,000 annually after upgrading or replacing inefficient motors in its Rochester, New York, plant.

Not Available

2007-02-01T23:59:59.000Z

414

Measurements of Rainfall Properties Using Long Optical Path Imaging  

Science Conference Proceedings (OSTI)

Measurements of long-path optical attenuation of visible light due to rainfall are described, from which rainfall parameters are derived. Novel aspects of the method are the use of a distant uncontrolled and broadband spotlight source, and ...

S. G. Bradley; C. D. Stow; C. A. Lynch-Blosse

2000-06-01T23:59:59.000Z

415

Page not found | Department of Energy  

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

71 - 12380 of 26,764 results. 71 - 12380 of 26,764 results. Download High Performance Builder Spotlight: Green Coast Enterprises- New Orleans, Louisiana This four-page case study describes Green Coast Enterprises efforts to rebuild hurricane-ravaged New Orleans through Project Home Again. http://energy.gov/eere/downloads/high-performance-builder-spotlight-green-coast-enterprises-new-orleans-louisiana Download High Performance Builder Spotlight: Green Coast Enterprises- New Orleans, Louisiana This four-page case study describes Green Coast Enterprises efforts to rebuild hurricane-ravaged New Orleans through Project Home Again. http://energy.gov/eere/downloads/high-performance-builder-spotlight-green-coast-enterprises-new-orleans-louisiana-0 Download EIS-0478: Notice of Intent and Notice of Floodplains and Wetland

416

Lighting Techniques  

Science Conference Proceedings (OSTI)

...Lighting is very critical in photography. The specimen should be placed on a background which will not detract from the resolution of the fracture surface. For basic lighting, one spotlight is suggested. The light is then raised or lowered, and

417

WIPP News Releases - 1995  

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

Aug. 9- 10 TriCiPe III Trade Show in Kennewick, Wash. TriCiPe III, to be held at the Tri-Cities Coliseum, spotlights the latest technologies in radioactive and hazardous materials...

418

Building Technologies Office: Home Energy Score Past Webinars...  

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

Webinars and Video Spotlights Here are past webinars and materials from Home Energy Score. July 30, 2013: Home Energy Score Program Overview for the American Gas Association U.S....

419

Focus on Biodiesel  

Science Conference Proceedings (OSTI)

AOCS spotlights the topic of renewable energy with this comprehensive CD-ROM containing various Powerpoint presentations, abstracts, book chapters, technical tables, biodiesel standards, and numerous links to Internet resources. Focus on Biodiesel Biofuel

420

Onondaga County Department of Water Environment Protection: Process Optimization Saves Energy at Metropolitan Syracuse Wastewater Treatment Plant  

SciTech Connect

This DOE Industrial Technologies Program spotlight describes how Onondaga County, New York, is saving nearly 3 million kWh and 270 million Btu annually at a wastewater treatment plant after replacing inefficient motors and upgrading pumps.

Not Available

2005-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

--No Title--  

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

140307+0000>20130626369 Blue Gene Q ComputersDiversity genderDiversity gender-femaleEmployee SpotlightLocationportrait8BIM%5Cr &127;nE8BIM:-...

422

--No Title--  

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

Photoshop 3.08BIM,,8BIMZ%GMaria A. Power203ATLASDiversity genderDiversity gender-female DivisionsEmployee SpotlightLocationportrait720130327<102601>20130327?102601P Wes...

423

--No Title--  

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

Photoshop 3.08BIM,,8BIMZ%GMaria A. Power203ATLASDiversity genderDiversity gender-female DivisionsEmployee SpotlightLocationportrait720130327<102238>20130327?102238P Wes...

424

--No Title--  

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

Photoshop 3.08BIM,,8BIMZ%GMaria A. Power203ATLASDiversity genderDiversity gender-female DivisionsEmployee SpotlightLocationportrait720130327<110057>20130327?110057P Wes...

425

Graphene as a manufactured product : a look forward  

E-Print Network (OSTI)

Graphene's unique electrical and mechanical properties have brought it into the spotlight in recent years. With the number of patents increasing rapidly every year, production of the material is becoming more and more ...

Frost, Stephen T

2013-01-01T23:59:59.000Z

426

NETL: Features - February 2012  

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

2011 Participant Spotlight" section of their website. Dr. Clinton Bedick, Dr. Sivaram Harendra, Dr. Angela Hartsock, and Dr. Joseph Ranalli-all post-doctoral interns-were nominated...

427

Small Business Toolbox | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

NNSA Timeline Careers Working at NNSA In the Spotlight Leadership Contact Us NNSA Information (202) 586-5000 NNSA Press Office (202) 586-7371 Contact the NNSA Organizational...

428

Small Business Teaming Workshop Program | National Nuclear Security...  

National Nuclear Security Administration (NNSA)

NNSA Timeline Careers Working at NNSA In the Spotlight Leadership Contact Us NNSA Information (202) 586-5000 NNSA Press Office (202) 586-7371 Contact the NNSA Organizational...

429

OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...  

Office of Scientific and Technical Information (OSTI)

radiation Topic OpenNet gets a new look by Rita Hohenbrink 02 Aug, 2012 in Products and Content OpenNet gets a new look The newly redesigned OpenNet contains spotlights on...

430

Replacing Incandescent Lightbulbs and Ballasts | Department of...  

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

as ellipsoidal reflectors (type-ER) in recessed fixtures. Use reflector (R)or parabolic reflector (PAR) CFLs for flood and spotlighting. Some CFL fixtures have built-in...

431

Established Materials Technology  

Science Conference Proceedings (OSTI)

Jun 19, 2013 ... In the "Community Resources" box in the upper right corner of this page, you'll ... For other recent spotlight stories, please visit the Archive tab.

432

Boise Paper: Process Pumping System Optimization Saves Energy and Improves Production  

SciTech Connect

This DOE Industrial Technologies Program spotlight describes how Boise Paper is saving 498,000 kWh annually after improving the process pumping system efficiency of its Wallula, Washington, mill.

2006-05-01T23:59:59.000Z

433

OSTI, US Dept of Energy, Office of Scientific and Technical Informatio...  

Office of Scientific and Technical Information (OSTI)

Inc. More Posts from Kathy Chambers UC Berkeley in the Spotlight 1 min ago The Higgs boson - a turning point in history 4 weeks ago Keeping the lights on 8 weeks ago More......

434

Electrocatalytic activities of supported Pt nanoparticles for low-temperature fuel cell applications  

E-Print Network (OSTI)

Low-temperature fuel cells (FCs) are highly efficient and environmentally friendly energy conversion devices that have been in the spotlight of many energy research efforts in the past few decades. However, FC commercialization ...

Sheng, Wenchao, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

435

Environmental Health and Safety Environmental Health and Safety1391Seymour StreetHalifax, Nova Scotia B3H 3M6  

E-Print Network (OSTI)

.g. chloroform, dichloromethane, etc.) 6. Waste oil (e.g. vacuum pump oil, motor oil, etc.) Uncontrolled (select one): ___ aqueous (pH = ___ ) ___ waste oil ___ halogenated ___ non-halogenated Components (non

Brownstone, Rob

436

Photometric assessment of energy efficient torchieres  

E-Print Network (OSTI)

performance of a high-efficiency CFL torchiere in comparisonCFL - Half Halogen - Full Halogen - Half Actual Wattage Lamp Fixture Fixture Lumens Efficiencyefficiency and conservation issues to date. The LBNL-designed energy efficient CFL

Page, Erik; Siminovitch, Michael

1997-01-01T23:59:59.000Z

437

1997 Glossary  

U.S. Energy Information Administration (EIA)

All types of light bulbs are included: incandescent, fluorescent, compact fluorescent, halogen, and high-intensity-discharge (HID). (See Appliances ...

438

Incan-  

Gasoline and Diesel Fuel Update (EIA)

Area Only Floorspace (million square feet) Incan- descent Standard Fluor- escent Compact Fluor- escent High Intensity Discharge Halogen All Buildings* ......

439

Global Potential of Energy Efficiency Standards and Labeling Programs  

E-Print Network (OSTI)

T5 Incandescent CFL Halogen Other Total Equipment EfficiencyCFL replacement for incandescent bulbs, and high-efficiency

McNeil, Michael A

2008-01-01T23:59:59.000Z

440

Page 1 of 5 Environmental Health and Safety  

E-Print Network (OSTI)

, hexanes, etc.) 5. Halogenated (e.g. chloroform, dichloromethane, etc.) 6. Waste oil (e.g. vacuum pump oil, motor oil, etc.) Uncontrolled reactions as a result of mixing chemicals can result in fires, explosionsH = ___ ) ___ halogenated ___ waste oil ___ non-halogenated complete reverse Components (non-abbreviated names) Percent

Brownstone, Rob

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

List of common materials available for ESTAR continued  

Science Conference Proceedings (OSTI)

... Cadmium Tungstate Calcium Carbonate Calcium Fluoride Calcium Oxide ... Triethyl Phosphate Tungsten Hexafluoride Uranium Dicarbide Uranium ...

442

KISMET Tungsten Dispersal Experiment LosN A T I O N A L L A B O R A T O R Y  

E-Print Network (OSTI)

of the rock adjacent to the test. But for mine-back reentry into the test area, knowledge of the potential. The KISMET experiment of 1995 (Kunkle, 1994) involved use of depleted uranium. In order to understand how

443

Material and Power-Handling Properties of Tungsten PFCs After Steady-State Melting and Additional Transient High-Heat-Flux Exposure  

Science Conference Proceedings (OSTI)

Technical Paper / First Joint ITER-IAEA Technical Meeting on Analysis of ITER Materials and Technologies

J. W. Coenen; B. Bazylev; S. Brezinsek; V. Philipps; T. Hirai; A. Kreter; J. Linke; G. Pintsuk; G. Sergienko; A. Pospieszczyk; T. Tanabe; Y. Ueda; U. Samm; The TEXTOR Team

444

Activity of tungsten and rhenium filaments in CH sub 4 /H sub 2 and C sub 2 H sub 2 /H sub 2 mixtures: Importance for diamond CVD  

DOE Green Energy (OSTI)

The resistance R, spectral emissivity {epsilon}, and power consumption of W and Re filaments heated to 2500 {degree}C in mixtures of CH{sub 4} or C{sub 2}H{sub 2} in H{sub 2} have been measured in a series of experiments focusing on the state of the filament activity, i.e., its ability to dissociate the reactant gases. It has been found that these properties of the filaments, as well as the partial pressures of CH{sub 4} and C{sub 2}H{sub 2} in the reaction chamber, depend critically on both the filament temperature and the reactant ratio, e.g., C{sub 2}H{sub 2}/H{sub 2}. Specifically, both W and Re filaments show sharp jumps in power consumption at essentially the same temperature, signaling strong increases in filament activity and, hence, production of atomic hydrogen. These results are proposed to be due to the removal of non-reactive carbon from the surface of the filament via etching by atomic hydrogen and are consistent with the predictions of our thermodynamic model for the C-H system. Evidence for gas phase reactions is presented and the role of thermal diffusion is discussed. The emissivities of the W and Re filaments are observed to have significantly different temperature dependences which are attributed to differences in the phase diagrams for the W-C and Re-C systems. The implications of these results for hot-filament diamond CVD are discussed.

Sommer, M.; Smith, F.W. (Department of Physics, The City College of the City University of New York, New York, NY (USA))

1990-11-01T23:59:59.000Z

445

Comparison of Photoneutron Yields in Tungsten Calculated by MCNPX Using Different Photonuclear Cross-Section Data for Typical Radiation Therapy Energies  

Science Conference Proceedings (OSTI)

Neutron Data / Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (Part 2) / Radiation Biology and Medicine

Bryan Bednarz; Bin Han; X. George Xu

446

Search for double beta decay of Zinc and Tungsten with the help of low-background ZnWO4 crystal scintillators  

E-Print Network (OSTI)

Double beta processes in 64-Zn, 70-Zn, 180-W, and 186-W have been searched for with the help of large volume (0.1-0.7 kg) low background ZnWO4 crystal scintillators at the Gran Sasso National Laboratories of the INFN. Total time of measurements exceeds 10 thousands hours. New improved half-life limits on double electron capture and electron capture with positron emission in 64-Zn have been set, in particular (all the limits are at 90% C.L.): T1/2(0nu2EC)> 1.1e20 yr, T1/2(2nuECbeta+)>7.0e20 yr, and T1/2(0nuECbeta+)>4.3e20 yr. The different modes of double beta processes in 70-Zn, 180-W, and 186-W have been restricted at the level of 1e17-1e20 yr.

P. Belli; R. Bernabei; F. Cappella; R. Cerulli; F. A. Danevich; B. V. Grinyov; A. Incicchitti; V. V. Kobychev; V. M. Mokina; S. S. Nagorny; L. L. Nagornaya; S. Nisi; F. Nozzoli; D. V. Poda; D. Prosperi; V. I. Tretyak; S. S. Yurchenko

2008-11-14T23:59:59.000Z

447

Above: Energy deposition in the superconducting magnet and the tungsten-carbide shield inside them. Approximately 2.4 MW must  

E-Print Network (OSTI)

cost driver of the target system is the civil construction of the target vault ­ with hot cells and remote handling manipulators. Above: Splash mitigation options for the mercury collection pool/beam dump

McDonald, Kirk

448

Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites  

DOE Patents (OSTI)

Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

Jang, Bor Z. (Centerville, OH); Zhamu, Aruna (Centerville, OH)

2011-02-22T23:59:59.000Z

449

Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites  

DOE Patents (OSTI)

Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

Jang, Bor Z. (Centerville, OH); Zhamu, Aruna (Centerville, OH)

2012-02-14T23:59:59.000Z

450

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

University of Tennessee Knoxville in DOE's .EDUconnections Spotlight University of Tennessee Knoxville in DOE's .EDUconnections Spotlight by Kathy Chambers on Tue, 4 Sep, 2012 University of Tennessee Knoxville Science is always in the spotlight at the University of Tennessee Knoxville, a land-grant institution and the state's flagship research campus. Recent research might include searching for potential habitats for life on Mars, developing an autotaxin inhibitor to fight cancer, designing a car for the DOE EcoCAR 2 competition, determining the boundaries of the nuclear chart or developing "Living Light", a net-zero energy home for DOE's Solar Decathlon. UTK is situated in an ideal environment for research. It has a 60-year-old partnership with DOE's Oak Ridge National Laboratory, where young scientists have access

451

Reply to comment | OSTI, US Dept of Energy, Office of Scientific and  

Office of Scientific and Technical Information (OSTI)

Reply to comment Reply to comment Slide22 Submitted by gibsone on Fri, 2013-08-30 06:35 FY2011-Anderson Slide22 Spotlighting: .EDUconnections http://www.osti.gov/EDUconnections/ * OSTI "spotlights" individual universities and community colleges committed to supporting and advancing the U.S. Department of Energy's scientific research programs at DOE Laboratories and Scientific User Facilities. * Some Spotlights from the past year: - University of Illinois (Exceptional Students) Fermi Lab Connection. - Jackson State University (Science and Educational Initiatives) ORNL Connection. - Princeton University PPPL Connection. - Des Moines Area Community College (Research Feature) Ames Laboratory Connection. Add new comment Original Thumbnail Mobile_320x340 Icon_64x64 Reply (If you're a human, don't change the following field)

452

The Standards Forum, September 1999  

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

2 – September 1999 2 – September 1999 PAGE 1 The Standards News on the DOE Technical Standards Program A Note From the Manager ............. 2 TSM Spotlight ........................... 3 TSM Spotlight ................................ 4 Topical Committees ....................... 5 Standards Actions .......................... 7 News Briefs ................................... 11 FAQs ............................................. 14 Upcoming Meetings ....................... 15 TSMC Telecons ............................. 16 Volume 7 – Number 2 – September 1999 Savannah River Targets Cost Savings Through Standards Reduction By Art Blanchard, Savannah River Site In 1995, the Savannah River Site (SRS) initi- ated a cost-effective task to have the site’s standards system mandate usage of national codes and stan-

453

An overview of the development of the first wall and other principal components of a laser fusion power plant  

E-Print Network (OSTI)

shot. A wall candidate based on tungsten armor bonded to a low activation ferritic steel sub- strate of the development of laser fusion energy. The second part introduces the tungsten armored ferritic steel concept

Raffray, A. René

454

M-25, BUTT WELDS IN PROCESS PIPING  

SciTech Connect

Metal-arc and inert-gas shielded tungsten-arc processes were compared for circumferential butt welding of austenitic stainless steel process pipe. Inert-gas tungsten-arc welding was superior to other techniques. (C.J.G.)

Litman, A.P.

1958-07-10T23:59:59.000Z

455

Chemistry of Bimetallic Linked Cyclopentadienyl Complexes: Progress Report, 1 December 1986 --30 November 1989  

DOE R&D Accomplishments (OSTI)

Research continued on the chemistry and preparation of bimetallic cyclopentadienyl complexes containing up to two tungsten or one tungsten and a cobalt, rhodium, or ruthenium. The general method for preparation and analysis of polyenes is also discussed. (CBS)

Schrock, R. R.

1989-00-00T23:59:59.000Z

456

The ecology of chemical defence in a filamentous marine red alga.  

E-Print Network (OSTI)

??I investigated the ecological functions of halogenated secondary metabolites from the red alga Asparagopsis armata, their localisation in specialised cells and also their cost of (more)

Paul, Nicholas Andrew

2006-01-01T23:59:59.000Z

457

Ultra-Fast Quantum Efficiency Solar Cell Test - Energy ...  

Using light emitting diodes (LEDs) and ... The technology is based on a full-spectrum array of LEDs instead of traditional halogen bulbs and ...

458

A Key Enzyme to the Potency of an Anticancer Agent  

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

A Key Enzyme to the Potency of an Anticancer Agent Print Incorporation of halogen atoms into drug molecules often increases biological activity. This is the case with...

459

Energy Basics: Incandescent Lighting  

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

The three most common types of incandescent lamps are: Standard incandescent lamps Energy-Saving Incandescent (or Halogen) Reflector lamps Standard Incandescent Lamps Known as...

460

Incandescent Lighting | Department of Energy  

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

or pear-shaped A-19 lamps Energy-saving or halogen A-19 lamps Reflector or parabolic reflector (PAR) lamps, sometimes called "flood" or "spot" lamps Standard...

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

Stadiums and arenas use efficient, high wattage lamps - Today ...  

U.S. Energy Information Administration (EIA)

Other lighting types, such as light-emitting diode (LED), incandescent, and halogen lamps, are used in applications like signals, signage, ...

462

A projective LED dental lamp design.  

E-Print Network (OSTI)

??Halogen lamps are mostly applied as a light source to the traditional lamp for medical treatment due to its proper color temperature, but it has (more)

Chung, Yu-Lin

2011-01-01T23:59:59.000Z

463

PROCESS FOR CONVERSION OF SURPLUS HALONS ...  

Science Conference Proceedings (OSTI)

... banned in 1996 and strict import-export and recycling ... of minor products during the gas-phase reaction of ... a) halogen in product HFC gases which is ...

2011-10-11T23:59:59.000Z

464

A Basic Study on Development of a Swell-Peeling Method in UBC ...  

Science Conference Proceedings (OSTI)

Aug 1, 2000... them using a methylene chloride solution with acids and it works very well. ... by the coexisting acid, especially halogenated acetic acid.

465

NIST GCR 01-812 A Guide to the EU Low Voltage Directive  

Science Conference Proceedings (OSTI)

... Tests on gases evolved during combustion ofmaterials from cables Part 2-1: Procedures Determination of the amount of halogen acid gas ...

2010-04-28T23:59:59.000Z

466

Development and testing of flame retardant additives and polymers.  

E-Print Network (OSTI)

??The first chapter examines the non-halogenated flame retardant additives. The synthesis and blending of these various boron compounds are discussed and the blending of these (more)

Jurs, Joshua Lewis

2004-01-01T23:59:59.000Z

467

STUDY OF HELIUM RETENTION IN NANO-CAVITY ...  

Science Conference Proceedings (OSTI)

STUDY OF HELIUM RETENTION IN NANO-CAVITY TUNGSTEN AS A FIRST WALL IN A FUSION CHAMBER USING NEUTRON DEPTH ...

468

Redox polymer electrodes for advanced batteries - Energy ...  

... chromium, tungsten and nickel; porphyrins (either free base or metallo derivatives ... National Renewable Energy Laboratory - Visit the NREL Commercialization and ...

469

NIST Light Source Illuminates Fusion Power Diagnostics  

Science Conference Proceedings (OSTI)

... Their measurement tool also is used in incandescent light bulbsit's the element tungsten. Published with permission of ITER. ...

2012-06-05T23:59:59.000Z

470

Neutron Depth Profiling  

Science Conference Proceedings (OSTI)

... ORNL, ONR, UNC, & NIST are developing an annealing protocol to release implanted He preventing damage to the tungsten containment wall. ...

2012-10-05T23:59:59.000Z

471

ACRONYMS AND ABBREVIATIONS TC -Training Circular  

E-Print Network (OSTI)

a center rest. stellite - A cast al alloy of chromium, cobalt. and sometimes tungsten, used to make lathe

Gellman, Andrew J.

472

d _ '" _/ :_'_ _' i.__s_/'"7,7k.: __-_  

E-Print Network (OSTI)

a center rest. stellite - A cast al alloy of chromium, cobalt. and sometimes tungsten, used to make lathe

Kirk, Daniel

474

Z .Applied Surface Science 162163 2000 479491 www.elsevier.nlrlocaterapsusc  

E-Print Network (OSTI)

to deposit tungsten 8 . Disilane is extremely reactive with WF and this6 CVD reaction must be carefully

George, Steven M.

475

DOE/JPL advanced thermionic technology program. Progress report No. 38, February-March 1979  

DOE Green Energy (OSTI)

Progress on DOE tasks is reported including (1) surface and plasma investigations (surface characterization chamber experiments, spectroscopic plasma measurements, and converter theory), (2) low temperature converter development (tungsten emitter, lanthanum hexaboride collector and tungsten emitter, tungsten oxide collector), and (3) component hardware development. JPL tasks reported include high-temperature converter evaluation, advanced converter studies, and correlation of design interfaces. (WHK)

Not Available

1979-01-01T23:59:59.000Z

476

Technical Standards Newsletter - March 2007 | Department of Energy  

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

March 2007 March 2007 Technical Standards Newsletter - March 2007 The Standards Forum and Standards Actions - March 2007 INSIDE THIS ISSUE: TSP Manager's Notes................................................................................................................. 1 Domestic Programs (American National Standards) Overview...................................................... 2 Aerospace Industry Advocates Standards Selection Based on Technical Merit, Not Semantics...... 3 Report Recommends Withdrawal of OMB Risk Assessment Bulletin............................................. 4 Technical Standards Manager Spotlight......................................................................................... 5 Topical Committee Developments.................................................................................................

477

Technical Standards Newsletter - June 2000 | Department of Energy  

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

Technical Standards Newsletter - June 2000 Technical Standards Newsletter - June 2000 Technical Standards Newsletter - June 2000 The Standards Forum and Standards Actions - June 2000 Inside this issue: A Note From the Manager ................................................ 2 Seven Years of Service ..................................................... 2 INSIDE THIS ISSUE TSM Spotlight ................................ 3 Lessons Learned ............................................................... 5 Standards Training Opportunities ....................................... 5 Standards Actions ............................................................. 6 Topical Committees ........................................................ 10 RevCom .........................................................................

478

September 2005 Standards Forum and Standards Actions  

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

Page September 2005 Page September 2005 TSP Manager's Notes 1 The Halo Effect: American National Standards and the rest 2 Standards Development for Report- ing of Declarable Substances 5 Technical Standards Manager Spotlight 8 DOE Revises "Integration of Environment, Safety, and Health

479

HMNewsSpring09.pdf  

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

Expedition Underway .................1 Expedition Underway .................1 Molecular Level Modeling .........7 Methane Fluxes and Gas Hydrates in the Sea Of Okhotsk ................11 The Methane Hydrate Fellowship..................................... 16 The Next Generation .................17 Announcements ...................... 27 * AAPG Convention * Postdoctoral Fellowship spotlight on Research .......... 28 Joo-yong Lee ContACt Ray Boswell Technology Manager-Methane

480

Multilevel Image Reconstruction with Natural Pixels Van Emden Henson \\Lambda Mark A. Limber y  

E-Print Network (OSTI)

function can be represented as a continuous linear map A : L 2(\\Omega\\Gamma ! R N , where (Au) j = hu; / j, is that it facilitates the development of a PML­based method for spotlight tomography, that is, local grid refinement is possible globally. 1 Introduction In this paper, we consider a model of transmission and emission

Henson, Van Emden

Note: This page contains sample records for the topic "tungsten halogen spotlights" 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

March 2007 Standards Forum and Standards Actions  

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

March 2007 March 2007 Continued on next page TSP Manager's Notes 1 Domestic Programs (American National Standards) Overview 2 Aerospace Industry Advocates Standards Selection Based on Technical Merit, Not Semantics 3 Report Recommends Withdrawal of OMB Risk Assessment Bulletin 4 Technical Standards Manager Spotlight 5 Topical Committee Developments 6 Welcome Aboard the TSMC! 7 Standards Actions 8 DOE Standards Actions 8

482

Technical Standards Newsletter - September 2005 | Department of Energy  

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

September 2005 September 2005 Technical Standards Newsletter - September 2005 The Standards Forum and Standards Actions - September 2005 Inside this issue: TSP Manager's Notes.................................................................................................................................... 1 The Halo Effect: American National Standards and the rest ............................................................................. 2 Standards Development for Reporting of Declarable Substances....................................................................... 5 Technical Standards Manager Spotlight............................................................................................................ 8 DOE Revises "Integration of Environment, Safety, and Health Into Facility

483

September 2006 Standards Forum/Standards Actions  

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

September 2006 September 2006 TSP Manager's Notes 1 TEN YEARS AFTER THE NTTAA: 1996-2006 2 Committee on Nuclear Fuel Cycle Approves Two New Standards 4 Renewable Portfolio Standards Help Wind Industry to Sail 5 Technical Standards Manager Spotlight 5 World Standards Day 2006 in

484

June 2006 Standards Actions  

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

Page 1 June 2006 Page 1 June 2006 Technical Standards Program Manager's Note 1 Safety for Electrical Workers 2 Significant Federal Laws and Policies 3 Clearance of Solid Materials from Nuclear Facilities 5 Technical Standards Manager Spotlight 6 Topical Committee Developments 7 From the ANSI Web site 8 Don't Get "Board" With

485

December 2005 Standards Forum  

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

Page December 2005 Page December 2005 TSP Manager's Notes 1 Overview of the U.S. Standardization System 2 A Call for Greater Collaboration 5 Technical Standards Manager Spotlight 6 Topical Committee Developments 7 Welcome Aboard the TSMC! 8 DOE Standards Actions 9 Non-Government Standards

486

Utility-Scale Future, Continuum Magazine: Clean Energy Innovation at NREL, Spring 2011, Issue 1 Vol. 1  

Science Conference Proceedings (OSTI)

This quarterly magazine is dedicated to stepping beyond the technical journals to reveal NREL's vital work in a real-world context for our stakeholders. Continuum provides insights into the latest and most impactful clean energy innovations, while spotlighting those talented researchers and unique facilities that make it all happen. This edition focuses on creating a utility-scale future.

Not Available

2011-08-01T23:59:59.000Z

487

When you think of the film industry, what comes to mind? Entertainment. In this issue you will discover how films not only bring us the latest adventures but also are being sculptured at  

E-Print Network (OSTI)

rooftop market. Solyndra uses a copper-indium-gallium-diselenide (CIGS) absorber layer in its solar cell to create revolutionary optics, semiconductors, medical devices, and solar cells. Spring 2009 In This Issue information, visit: www.jbg3.net Alumni Spotlight Phil Kraus (B.S. '93) is the director of technology at solar

Demirel, Melik C.

488

Playing in the X-Games Window on the Extreme Universe  

E-Print Network (OSTI)

to protect that fragile infrastructure and maintain the command and control of our utilities poses on an infrastructure of databases, communication satellites, and the Internet, all built in the last 30 years. The need THE MILLION-YEAR PROMISE DIALOGUE SPOTLIGHT 24 The Unseen Scholars RESEARCHING INFORMATION IN THE DIGITAL AGE

489

A Survey on the Principle and Control of Dynamic Voltage Restorer  

Science Conference Proceedings (OSTI)

With the development of information and automation techniques, dynamic voltage problems are once again in the spotlight. Dynamic voltage restorer (DVR) is a modern and important custom power device used for mitigating voltage sags in power distribution ... Keywords: voltage sag, dynamic voltage restorer (DVR), control strategy, power quality, optimized compensation, energy storage

Shuhong Kong; Zhongdong Yin; Renzhong Shan; Weidong Shang

2009-10-01T23:59:59.000Z

490

Deliberate Science, Continuum Magazine: Clean Energy Innovation at NREL, Winter 2012 (Book)  

Science Conference Proceedings (OSTI)

This quarterly magazine is dedicated to stepping beyond the technical journals to reveal NREL's vital work in a real-world context for our stakeholders. Continuum provides insights into the latest and most impactful clean energy innovations, while spotlighting those talented researchers and unique facilities that make it all happen. This edition focuses on deliberate science.

Not Available

2012-02-01T23:59:59.000Z

491

Application of an integrated PHY and MAC layer model for half-duplex IEEE 802.15.4 networks to smart grids  

Science Conference Proceedings (OSTI)

This paper puts the spotlight on the home/building area network of the smart grid. The IEEE 802.15.4 standard provides the core infrastructure for collecting data from customers' premises and forwarding it to the operations as well as service providers. ...

Batool Talha; Piergiuseppe Di Marco; Mostafa Kaveh

2011-10-01T23:59:59.000Z

492

Biological Applications Illustrating Linear  

E-Print Network (OSTI)

and is a subtractive mode (pigments absorb light rather) starting with white paper. Black ink (K) is also required. #12 different colors? Would it help if we added more colors? Could we do with fewer colors? Why do we typically and intensities of those colors created by light on a white screen. Vector: A spotlight that creates exactly

Walton, Brian

493

PHOTOVOLTAICS AND COMMERCIAL BUILDINGS--  

E-Print Network (OSTI)

comparable, or nearly so, to energy supplied from the utility power grid. The geographic region is important contacted 143 major electric utilities, account- ing for more than 80% of the U.S. installed electric-2-3 APPROACH #12;Spotlighting Hawaii's Mauna Lani Bay Hotel This sprawling hotel had acres of roof space

Perez, Richard R.

494

on marsGraduate student discovers new form of lava flow on Mars  

E-Print Network (OSTI)

complexities of ancient asteroid world visiting vesta found: faintest distant galaxymining the moon SESE . a s u . e d uNEWSLETTER OF THE SCHOOL OF EARTH AND SPACE EXPLORATION #12;ViDEo SpotliGht New SESE world [8] Mining the Moon ASU team takes part in Moon-mining competitiont [10] FOUND: Faintest distant

Shumway, John

495

CEMEX: Cement Manufacturer Saves 2.1 Million kWh Annually with a Motor Retrofit Project  

Science Conference Proceedings (OSTI)

This DOE Industrial Technologies Program spotlight describes how the CEMEX cement manufacturing plant in Davenport, California, saves 2 million kWh and $168,000 in energy costs annually by replacing 13 worn-out motors with new energy-efficient ones.

Not Available

2005-11-01T23:59:59.000Z

496

December 2006 Standards Forum and Standards Actions  

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

December 2006 December 2006 TSP Manager's Notes 1 Meeting In The Middle 2 Plain Talk for a New Generation 3 Licensing New Nuclear Power Plants 4 ANSI Government Affairs Overview 5 Technical Standards Manager Spotlight 7 Topical Committee Developments 8 Welcome Aboard the TSMC! 8 Standards Actions 9 DOE Standards Actions 9

497

NREL Spectrum of Clean Energy Innovation: Issue 3 (Book)  

Science Conference Proceedings (OSTI)

This quarterly magazine is dedicated to stepping beyond the technical journals to reveal NREL's vital work in a real-world context for our stakeholders. Continuum provides insights into the latest and most impactful clean energy innovations, while spotlighting those talented researchers and unique facilities that make it all happen. This edition focuses on the NREL Spectrum of Clean Energy Innovation.

Not Available

2012-11-01T23:59:59.000Z

498

Published by the IEEE CS n 1536-1268/11/$26.00 2011 IEEE PERVASIVE computing 11 G U E S T E D I T O R S ' I N T R O D U C T I O N  

E-Print Network (OSTI)

Sensing for the Smart Grid," Jon Froehlich and his colleagues pres ent a history of these techniques demandandresponse are critical to realizing a stable, scalable smart grid. Finally, in this issue's Spotlight de with the complex control schemes that smart energy systems will enable. As information flows into the grid

499

Welding arc initiator  

DOE Patents (OSTI)

An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome. 3 figs.

Correy, T.B.

1989-05-09T23:59:59.000Z

500

Welding arc initiator  

SciTech Connect

An improved inert gas shielded tungsten arc welder is disclosed of the type wherein a tungsten electrode is shielded within a flowing inert gas, and, an arc, following ignition, burns between the energized tungsten electrode and a workpiece. The improvement comprises in combination with the tungsten electrode, a starting laser focused upon the tungsten electrode which to ignite the electrode heats a spot on the energized electrode sufficient for formation of a thermionic arc. Interference problems associated with high frequency starters are thus overcome.

Correy, Thomas B. (Richland, WA)

1989-01-01T23:59:59.000Z