Powered by Deep Web Technologies
Note: This page contains sample records for the topic "fluor escent compact" 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.


1

Fluor  

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

6 6 AUDIT REPORT FLUOR DANIEL FERNALD' S USE OF TEMPORARY SERVICES SUBCONTRACTORS APRIL 1998 U.S. DEPARTMENT OF ENERGY OFFICE OF INSPECTOR GENERAL OFFICE OF AUDIT SERVICES DEPARTMENT OF ENERGY Washington, DC 20585 April 1, 1998 MEMORANDUM FOR THE MANAGER, OHIO FIELD OFFICE FROM: Terry L. Brendlinger Eastern Regional Audit Office Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Fluor Daniel Fernald's Use of Temporary Service Subcontractors" BACKGROUND The Department of Energy (Department) and Fluor Daniel Fernald (Fluor Daniel) implemented two work force restructurings at the Fernald Environmental Management Project between Fiscal Years (FY) 1994 and 1996. During the restructurings, the Department's cost for temporary service subcontracts increased from

2

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* ......

3

FLUOR HANFORD DECOMMISSIONING UPDATE  

SciTech Connect

Fluor Hanford is completing D&D of the K East Basin at the U.S. Department of Energy's (DOE's) Hanford Site in southeastern Washington State this spring, with demolition expected to begin in June. Located about 400 yards from the Columbia River, the K East Basin is one of two indoor pools that formerly contained irradiated nuclear fuel, radioactive sludge and tons of contaminated debris. In unique and path-breaking work, workers finished removing the spent fuel from the K Basins in 2004. In May 2007, workers completed vacuuming the sludge into containers in the K East Basin, and transferring it into containers in the K West Basin. In December, they finished vacuuming the remainder of K West Basin sludge into these containers. The K East Basin was emptied of its radioactive inventory first because it was more contaminated than the K West Basin, and had leaked in the past. In October 2007, Fluor Hanford began physical D&D of the 8,400-square foot K East Basin by pouring approximately 14-inches of grout into the bottom of it. Grout is a type of special cement used for encasing waste. Two months later, Fluor Hanford workers completed sluicing contaminated sand from the large filter that had sieved contaminants from the basin water for more than 50 years. Next, they poured grout into the filter housing and the vault that surrounds the filter, as well as into ion exchange columns that also helped filter basin water. For a six-week period in February and March, personnel drained the approximately one million gallons of contaminated water from the K East Basin. The effort required more than 200 tanker truck loads that transported the water to an effluent treatment facility for treatment and then release. A thin fixative was also applied to the basin walls as the water was removed to hold residual contamination in place. As soon as the water was out of the basin, Fluor pumped in approximately 18 feet of 'controlled density fill' material (somewhat similar to sand) to shield workers to a safe level from the residual radioactivity. Workers then continued preparations for demolishing the structure. Currently, they are isolating utilities, removing asbestos, draining oils, and removing other items not allowed to be disposed in Hanford's Environmental Restoration Disposal Facility (ERDF). The basin's superstructure will be demolished using a heavy industrial excavator equipped with a shear. This portion of the work is expected to be completed in September, with removal of the basin substructure to follow in 2009. D&D of the K East Basin eliminated the final major radioactive sources there, and made the Columbia River and the adjacent environment safer for everyone who lives downstream.

GERBER MS

2008-04-21T23:59:59.000Z

4

Fluor Corp | Open Energy Information  

Open Energy Info (EERE)

Fluor Corp Fluor Corp Jump to: navigation, search Name Fluor Corp Place Irving, Texas Zip 75039 Product US provider of engineering, procurement, construction management (EPCM), O&M, and project management. Coordinates 32.813516°, -96.955506° 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":32.813516,"lon":-96.955506,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

5

Indium Fluor Sauerstoff Kulturleistung Chemie  

E-Print Network (OSTI)

In F O 49 9 8 Indium Fluor Sauerstoff Kulturleistung Chemie Tag der Chemie Samstag, 18. Juni 2011;Liebe Besucherin, lieber Besucher Hiermit möchten wir Sie herzlich zu unserem «Tag der Chemie» auf dem Experimental- vorführung spannender und verblüffender Phänomene aus der Chemie. Für die Kinder, die gern einmal

Zürich, Universität

6

Fluor Hanford Project Focused Progress at Hanford  

SciTech Connect

Fluor Hanford is making significant progress in accelerating cleanup at the Hanford site. This progress consistently aligns with a new strategic vision established by the U.S. Department of Energy's Richland Operations Office (RL).

HANSON, R.D.

2000-02-01T23:59:59.000Z

7

DOE Cites Fluor Fernald Inc. for Nuclear Safety Violations  

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

Washington, D.C. -The Department of Energy (DOE) today notified Fluor Fernald, Inc. (Fluor Fernald) that it will fine the company $33,000 for violations of the department's nuclear safety...

8

Enforcement Letter, Fluor Daniel Hanford, Inc- July 31, 1998  

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

Issued to Fluor Daniel Hanford, Inc., related to Incomplete Corrective Actions at the Hanford Site, July 31, 1998

9

Preliminary Notice of Violation, Fluor Daniel Fernald Corporation -  

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

Fernald Corporation - Fernald Corporation - EA-97-05 Preliminary Notice of Violation, Fluor Daniel Fernald Corporation - EA-97-05 July 29, 1997 Preliminary Notice of Violation issued to Fluor Daniel Fernald Corporation related to Corrective Actions Implementation Deficiencies at the Fernald Environmental Management Project, (EA-97-05) This letter refers to the Department of Energy's (DOE) evaluation of the facts and circumstances surrounding the failure of the Fluor Daniel Fernald Corporation (FDF) to effectively complete corrective actions for the referenced noncompliance, although it informed the DOE Fernald Project Office that such work had been completed. Preliminary Notice of Violation, Fluor Daniel Fernald Corporation - EA-97-05 More Documents & Publications Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05

10

VBZ-0005- In the Matter of Fluor Daniel Fernald  

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

This decision will consider a Motion to Dismiss Fluor Daniel Fernald (FDF) filed on September 7, 1999. FDF moves to dismiss a Complaint filed by Thomas W. Dwyer under the Department of Energy's ...

11

Buildings*","Lit Buildings","Lighting Equipment Types  

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

4. Lighting Equipment, Floorspace for Non-Mall Buildings, 2003" 4. Lighting Equipment, Floorspace for Non-Mall Buildings, 2003" ,"Total Floorspace (million square feet)" ,"All Buildings*","Lit Buildings","Lighting Equipment Types (more than one may apply)" ,,,"Incand- escent","Standard Fluor- escent","Compact Fluor- escent","High-Intensity Discharge","Halogen" "All Buildings* ...............",64783,62060,38528,59688,27571,20643,17703 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6789,6038,2918,5579,1123,312,604 "5,001 to 10,000 ..............",6585,6090,3061,5726,1109,686,781 "10,001 to 25,000 .............",11535,11229,6424,10458,2944,1721,1973

12

 

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

3. Lighting Equipment, Number of Buildings for Non-Mall Buildings, 2003 3. Lighting Equipment, Number of Buildings for Non-Mall Buildings, 2003 Number of Buildings (thousand) All Buildings* Lit Buildings Lighting Equipment Types (more than one may apply) Incand- escent Standard Fluor- escent Compact Fluor- escent High-Intensity Discharge Halogen All Buildings* ............................... 4,645 4,248 2,184 3,943 941 455 565 Building Floorspace (Square Feet) 1,001 to 5,000 ................................ 2,552 2,261 1,070 2,068 382 101 205 5,001 to 10,000 .............................. 889 821 416 772 148 88 107 10,001 to 25,000 ............................ 738 716 412 665 189 105 123 25,001 to 50,000 ............................ 241 231 145 223 102 60 55 50,001 to 100,000 .......................... 129 126 75 123 60 51 37

13

Buildings*","Lit Buildings","Lighting Equipment Types  

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

3. Lighting Equipment, Number of Buildings for Non-Mall Buildings, 2003" 3. Lighting Equipment, Number of Buildings for Non-Mall Buildings, 2003" ,"Number of Buildings (thousand)" ,"All Buildings*","Lit Buildings","Lighting Equipment Types (more than one may apply)" ,,,"Incand- escent","Standard Fluor- escent","Compact Fluor- escent","High-Intensity Discharge","Halogen" "All Buildings* ...............",4645,4248,2184,3943,941,455,565 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",2552,2261,1070,2068,382,101,205 "5,001 to 10,000 ..............",889,821,416,772,148,88,107 "10,001 to 25,000 .............",738,716,412,665,189,105,123 "25,001 to 50,000 .............",241,231,145,223,102,60,55

14

Enforcement Letter, Fluor Daniel Hanford, Inc., H5-20- July 7, 1997  

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

Issued to Fluor Daniel Hanford, Inc., related to Potential Quality Assurance Rule Violations at the Hanford Site

15

SAFETY AT FLUOR HANFORD (B) CASE STUDY - PREPARED BY THE THUNDERBIRD SCHOOL OF GLOBAL MANAGEMENT  

SciTech Connect

One year into the Hanford contract, Fluor had learned a number of hard lessons very quickly. Although the Hanford remediation contract was in many ways a new endeavor for Fluor and a different kind of contract, the organization moved quickly to increase communication with all employees, attack head-on what it considered unsafe and inappropriate safety practices, and strongly inject its own corporate cultural beliefs into the Hanford organization. It wasn't easy, and it didn't happen overnight. From the beginning, Fluor established processes and programs to drive down injury rates. For example, whereas the previous contractor's approach to injuries had been passive, Fluor took a much more aggressive approach to worker injuries. The previous contractor had established a practice of sending injured workers home with the basic directive 'to come back when you are well'. Instead of using outsourced medical assessment, Fluor internalized it and evaluated all claims aggressively. Legitimate claims were quickly settled, and management moved to identify 'repeat offenders' when it came to reportable safety incidents. In the first year of Fluor's management, reportable injuries dropped from 5.37 to 2.99 per 200,000 man-hours. Despite the drop in injury rates, the safety record at Fluor Hanford was not at a level that met either Fluor or the Department of Energy's expectations. Earlier in 1997, Fluor Hanford's proposed safety program was rejected by the DOE. The DOE was not satisfied with Fluor Hanford's proposal for various reasons, including insufficient worker involvement and a lack of accountability. With the need for change clearly established, Fluor Hanford management embarked on a decade-long mission to change the safety culture and improve safety performance. This case describes the key changes and their impact on Fluor Hanford.

ARNOLD LD

2009-09-25T23:59:59.000Z

16

Fluor Hanford, Inc. Groundwater and Technical Integration Support (Master Project) Quality Assurance Management Plan  

SciTech Connect

The scope of the Fluor Hanford, Inc. Groundwater and Technical Integration Support (Master Project) is to provide technical and integration support to Fluor Hanford, Inc., including operable unit investigations at 300-FF-5 and other groundwater operable units, strategic integration, technical integration and assessments, remediation decision support, and science and technology. This Quality Assurance Management Plan provides the quality assurance requirements and processes that will be followed by the Fluor Hanford, Inc. Groundwater and Technical Integration Support (Master Project).

Fix, N. J.

2008-02-20T23:59:59.000Z

17

Fluor Hanford Nuclear Material Stabilization Project Welding Manual  

SciTech Connect

The purpose of this section of the welding manual is to: (1) Provide a general description of the major responsibilities of the organizations involved with welding. (2) Provide general guidance concerning the application of codes related to welding. This manual contains requirements for welding for all Fluor Hanford (FH) welding operators working on the W460 Project, in the Plutonium Finishing Plant (PFP) at the U. S. Department of Energy (DOE) Hanford facilities. These procedures and any additional requirements for these joining processes can be used by all FH welding operators that are qualified. The Welding Procedure Specifications (WPS) found in this document were established from Procedure Qualification Records (PQR) qualified by FH specifically for the W460 Project. PQRs are permanent records of the initial testing and qualification program and are used to backup, and support, the WPS. The identification numbers of the supporting PQR(s) are recorded on each WPS. All PQRs are permanently stored under the supervision of the Fluor Hanford Welding Engineer (FHWE). New PQRs and WPSs will continue to be developed as necessary. The qualification of welders, welding operators and welding procedures will be performed for FH under supervision and concurrent of the FHWE. All new welding procedures to be entered in this manual or welder personnel to be added to the welder qualification database, shall be approved by the FHWE.

BERKEY, J.R.

2000-10-20T23:59:59.000Z

18

Intern experience at Fluor Engineers, Inc.: an internship report  

E-Print Network (OSTI)

This report demonstrates how the author's internship with the Houston Division of Fluor Engineers, Inc. fulfilled requirements of the Doctor of Engineering program and met the internship objectives. During the sixteen-month period between May 1980 and August 1981, the intern held the position of Engineer with the Cost and Scheduling Department. This position allowed the author to observe and participate in a wide variety of projects in both technical and supervisory capacities, dealing primarily with scheduling and cost control for construction of large chemical process plants. Substantial experience was also obtained from interface with other departments of the company, including accounting, procurement, process engineering, project engineering, finance, and design engineering. Additionally, the intern's position allowed regular contact with project and corporate management, providing exposure to the company's top decision makers. A brief overview of both cost engineering and scheduling engineering is presented to demonstrate the technical aspect of the internship. Finally, several of the author's positions at Fluor are described in order to detail the intern's experience and show specifically how each objective was achieved.

Dobbs, Stephen Benton, 1956-

1983-08-01T23:59:59.000Z

19

Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2004-07 |  

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

Fluor Fernald, Inc. - EA-2004-07 Fluor Fernald, Inc. - EA-2004-07 Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2004-07 August 9, 2004 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Respiratory Protection Issues at the Fernald Environmental Management Project This letter refers to the Department of Energy's (DOE) Office of Price-Anderson Enforcement's (OE) recent review of programmatic failures involving the use of respiratory protection at the Waste Pit Project (WPP). Our review identified that specific noncompliances under 10 CFR 830, Subpart A, "Quality Assurance Requirements," and 10 CFR 835 "Occupational Radiation Protection" have occurred as described in the attached Preliminary Notice of Violation (PNOV). Fluor Fernald Inc.

20

Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05 |  

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

Fluor Fernald, Inc. - EA-2005-05 Fluor Fernald, Inc. - EA-2005-05 Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05 August 25, 2005 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Radiation Protection and Quality Improvement Deficiencies at the Fernald Environmental Management Project This letter refers to the radiation protection and quality improvement deficiencies that were identified as part of the recent Price-Anderson Amendments Act (PAAA) Program Review conducted at the Fernald site on July 11-14, 2005. These deficiencies were discussed with you during the outbriefing of that review on July 14, 2005. A report documenting the findings and conclusion of the PAAA Program Review is being issued under separate cover. Press Release Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05

Note: This page contains sample records for the topic "fluor escent compact" 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

Consent Order, Fluor Fernald, Inc. - EA-2003-05 | Department of Energy  

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

Fernald, Inc. - EA-2003-05 Fernald, Inc. - EA-2003-05 Consent Order, Fluor Fernald, Inc. - EA-2003-05 August 18, 2003 Price-Anderson Enforcement Consent Order issued to Fluor Fernald, Inc., related to an Unposted High Radiation Area at the Fernald Environmental Management Project, (EA-2003-05) This letter refers to the Department of Energy's (DOE) evaluation of a recent investigation conducted by Fluor Fernald, Inc. (Fluor Fernald) into the facts and circumstances surrounding an unposted High Radiation Area adjacent to the small concrete building [ ] currently used for thermoluminescent dosimeter (TLD) irradiations. This unposted condition, present during irradiator operations, existed for over a year before discovery by DOE on March 27, 2003. Fluor Fernald reported the deficiency using the

22

Giangiacorno, SPE, Fluor Daniel (NPOSR), Inc.; D. Michael Dennis, Geo  

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

1 1 Field Testing of the Biocompetitive Exclusion Process for Control of Iron and Hydrogen Sulfides Leo A. Giangiacorno, SPE, Fluor Daniel (NPOSR), Inc.; D. Michael Dennis, Geo - Microbial Technologies, Inc. This paper was prepared for presentation at the 1997 SPE Rocky Mountain Regional Meeting held in Casper, Wyoming, 18 - 21 May 1997. This paper was selected for presentation by an SPE Program Committee following review of information contained in an abstract submitted by the author(s) Contents of the paper, as presented, have not been reviewed by the Society of Petroleum Engineers and are subject to co rrection by the author(s). The material, as presented, does not necessarily reflect any position of the Society of Petroleum Engineers, its officers, or members. Papers

23

Preliminary Notice of Violation, Fluor Fernald, Inc - EA-2001-06 |  

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

Fluor Fernald, Inc - EA-2001-06 Fluor Fernald, Inc - EA-2001-06 Preliminary Notice of Violation, Fluor Fernald, Inc - EA-2001-06 January 4, 2002 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Unplanned Radiation Exposures and Quality Improvement Deficiencies at the Fernald Environmental Management Project, EA-2001-06 This letter refers to the Department of Energy's (DOE) evaluation of several problems and events occurring during calendar years 2000 and 2001 in association with the Waste Pits Remedial Action Project (WPRAP). In August 2000 your staff identified a problem with elevated airborne radioactivity levels at the WPRAP T321 trailer. This long-standing deficiency resulted in a significant number of workers receiving unplanned and unmonitored radiation exposures.

24

Consent Order, Fluor Federal Services - EA-2000-10 | Department of Energy  

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

Federal Services - EA-2000-10 Federal Services - EA-2000-10 Consent Order, Fluor Federal Services - EA-2000-10 July 25, 2000 Price-Anderson Enforcement Consent Order issued to Fluor Federal Services related to Quality Problems at the Tank Farm Waste Remediation System at the Hanford Site, (EA-2000-10) This letter refers to the Department of Energy's (DOE) evaluation of two internal investigations conducted by Fluor Hanford, Inc. and CH2M Hanford Group, Inc. in which Fluor Federal Services (FFS) jointly participated. Collectively, the two investigations examined the facts and circumstances surrounding quality problems with the procurement of safety class piping for the W-314 Project at the Tank Farm Waste Remediation System and reviewed the adequacy and effectiveness of FFS's procurement quality

25

Proton transfer bis-benzazole fluors and their use in scintillator detectors  

DOE Patents (OSTI)

A novel class of proton transfer, bis-benzazole, fluorescent compounds, i.e., fluors, is disclosed. The novel fluors include substituted or unsubstituted 1,4-bis(2-benzazolyl)-2-hydroxybenzenes and 1,4-bis(2-benzazolyl)-2-amidobenzenes wherein the benzazolyl group may be benzoxazolyl, benzimidazolyl, benzothiazolyl, and the like. The benzazolyl groups may be substituted with one or more alkyl groups to improve solubility in organic matrix materials such as solvents, monomers, resins, polymers, and the like. The novel fluors may be used in the manufacture of fluorescent coatings, objects, scintillators, light sources and the like. The novel fluors are particularly useful for radiation-hard, solid scintillators for the detection and measurement of high energy particles and radiation.

Kauffman, J.M.

1994-03-29T23:59:59.000Z

26

Proton transfer bis-benzazole fluors and their use in scintillator detectors  

DOE Patents (OSTI)

A novel class of proton transfer, bis-benzazole, fluorescent compounds, i.e., fluors, is disclosed. The novel fluors include substituted or unsubstituted 1,4-bis(2-benzazolyl)-2-hydroxybenzenes and 1,4-bis(2-benzazolyl)-2-amidobenzenes wherein the benzazolyl group may be benzoxazolyl, benzimidazolyl, benzothiazolyl, and the like. The benzazolyl groups may be substituted with one or more alkyl groups to improve solubility in organic matrix materials such as solvents, monomers, resins, polymers, and the like. The novel fluors may be used in the manufacture of fluorescent coatings, objects, scintillators, light sources and the like. The novel fluors are particularly useful for radiation-hard, solid scintillators for the detection and measurement of high energy particles and radiation.

Kauffman, Joel M. (Wayne, PA)

1994-01-01T23:59:59.000Z

27

Buildings","Total  

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

L2. Floorspace Lit by Lighting Types (Non-Mall Buildings), 1999" L2. Floorspace Lit by Lighting Types (Non-Mall Buildings), 1999" ,"Floorspace (million square feet)" ,"Total (Lit or Unlit) in All Buildings","Total (Lit or Unlit) in Buildings With Any Lighting","Lighted Area Only","Area Lit by Each Type of Light" ,,,,"Incan- descent","Standard Fluor-escent","Compact Fluor- escent","High Intensity Discharge","Halogen" "All Buildings* ...............",61707,58693,49779,6496,37150,3058,5343,1913 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6750,5836,4878,757,3838,231,109,162 "5,001 to 10,000 ..............",7940,7166,5369,1044,4073,288,160,109 "10,001 to 25,000 .............",10534,9773,7783,1312,5712,358,633,232

28

Buildings","Total  

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

L1. Floorspace Lit by Lighting Type for Non-Mall Buildings, 1995" L1. Floorspace Lit by Lighting Type for Non-Mall Buildings, 1995" ,"Floorspace (million square feet)" ,"Total (Lit or Unlit) in All Buildings","Total (Lit or Unlit) in Buildings With Any Lighting","Lighted Area Only","Area Lit by Each Type of Light" ,,,,"Incan- descent","Standard Fluor-escent","Compact Fluor- escent","High Intensity Discharge","Halogen" "All Buildings*",54068,51570,45773,6746,34910,1161,3725,779 "Building Floorspace" "(Square Feet)" "1,001 to 5,000",6272,5718,4824,986,3767,50,22,54 "5,001 to 10,000",7299,6667,5728,1240,4341,61,169,45 "10,001 to 25,000",10829,10350,8544,1495,6442,154,553,"Q"

29

Buildings","Total  

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

L3. Floorspace Lit by Lighting Type (Non-Mall Buildings), 2003" L3. Floorspace Lit by Lighting Type (Non-Mall Buildings), 2003" ,"Floorspace (million square feet)" ,"Total (Lit or Unlit) in All Buildings","Total (Lit or Unlit) in Buildings With Any Lighting","Lighted Area Only","Area Lit by Each Type of Light" ,,,,"Incan- descent","Standard Fluor-escent","Compact Fluor- escent","High Intensity Discharge","Halogen" "All Buildings* ...............",64783,62060,51342,5556,37918,4004,4950,2403 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6789,6038,4826,678,3932,206,76,124 "5,001 to 10,000 ..............",6585,6090,4974,739,3829,192,238,248 "10,001 to 25,000 .............",11535,11229,8618,1197,6525,454,506,289

30

Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05 |  

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

5-05 5-05 Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05 August 25, 2005 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Radiation Protection and Quality Improvement Deficiencies at the Fernald Environmental Management Project This letter refers to the radiation protection and quality improvement deficiencies that were identified as part of the recent Price-Anderson Amendments Act (PAAA) Program Review conducted at the Fernald site on July 11-14, 2005. These deficiencies were discussed with you during the outbriefing of that review on July 14, 2005. A report documenting the findings and conclusion of the PAAA Program Review is being issued under separate cover. Press Release Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2005-05

31

Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2004-07 |  

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

4-07 4-07 Preliminary Notice of Violation, Fluor Fernald, Inc. - EA-2004-07 August 9, 2004 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Respiratory Protection Issues at the Fernald Environmental Management Project This letter refers to the Department of Energy's (DOE) Office of Price-Anderson Enforcement's (OE) recent review of programmatic failures involving the use of respiratory protection at the Waste Pit Project (WPP). Our review identified that specific noncompliances under 10 CFR 830, Subpart A, "Quality Assurance Requirements," and 10 CFR 835 "Occupational Radiation Protection" have occurred as described in the attached Preliminary Notice of Violation (PNOV). Fluor Fernald Inc. reported these programmatic failures into the Noncompliance Tracking System

32

SAFETY AT FLUOR HANFORD (A) CASE STUDY - PREPARED BY THUNDERBIRD SCHOOL OF GLOBAL MANAGEMENT  

SciTech Connect

By November of 1997, Fluor Hanford (Fluor) had been the site manager of the Hanford nuclear reservation for a year. The Hanford site had been established as part of the Manhattan Project in the 1940s that gave birth to the atomic bomb. Hanford produced two thirds of U.S. plutonium during the Cold War period. The Hanford site was half the size of Rhode Island and occupied 586 square miles in southeastern Washington State. The production of plutonium for more than 40 years left a huge legacy of chemical and radiological contamination: 80 square miles of contaminated groundwater; 2,300 tons of spent nuclear fuel stored in underwater basins; 20 tons of plutonium-laced contaminated materials; and 500 contaminated facilities. The cleanup involved a challenging combination of radioactive material handling within an infrastructure constructed in the 1940s and 1950s. The cleanup that began in 1988 was expected to take 30 years or more. Improving safety at Hanford had already proven to be a significant challenge. As the new site manager at Hanford, Fluor Hanford inherited lower- and mid-level managers and thousands of unionized employees, many of whom were second or third generation Hanford employees. These employees had seen many contractors come and go over the years. Some of the managers who had worked with the previous contractor saw Fluor's emphasis on safety as getting in the way of operations. Union-management relations were fractious. Hanford's culture was described as 'production driven-management told everyone what to do, and, if you didn't do it, there were consequences'. Worker involvement in designing and implementing safety programs was negligible. Fluor Hanford also was having trouble satisfying its client, the Department of Energy (DOE). The DOE did not see a clear path forward for performance improvements at Hanford. Clearly, major change was necessary, but how and where should it be implemented?

ARNOLD LD

2009-09-25T23:59:59.000Z

33

Preliminary Notice of Violation and Proposed Imposition of Civil Penalty $935,000 - Fluor Hanford Inc.  

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

July 14, 2004 July 14, 2004 Mr. Ronald Gallagher [ ] Fluor Hanford Incorporated MSIN H5-20 P.O. Box 1000 Richland, WA 99352 EA 2004-06 Subject: Preliminary Notice of Violation and Proposed Imposition of Civil Penalty $935,000 Dear Mr. Gallagher: This letter refers to the Department of Energy's (DOE) Office of Price-Anderson Enforcement (OE) investigation of the facts and circumstances concerning deficiencies related to the design and safety basis of the Sludge and Water System (SWS) at K Reactor, 100 Area, of the Hanford Site. In early 2003, the DOE-Richland Operations Office (DOE-RL) identified to Fluor Hanford Incorporated (FHI) a number of deficiencies related to configuration control and system design, and expressed concern about the

34

Preliminary Notice of Violation, Fluor Daniel Hanford Company - EA-98-02 |  

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

Hanford Company - Hanford Company - EA-98-02 Preliminary Notice of Violation, Fluor Daniel Hanford Company - EA-98-02 March 26, 1998 Preliminary Notice of Violation issued to Fluor Daniel Hanford Company, related to Criticality Safety Infractions, Radiological Control Violations, and an Explosion at the Plutonium Finishing Plant at the Hanford Site, (EA-98-02) This letter refers to the Department of Energy's (DOE) evaluation of the facts and circumstances surrounding criticality safety infractions and a violation of radiological controls which occurred between November 1996 and June 1997 at the Plutonium Finishing Plant (PFP), and an explosion that occurred in May 1997 at [a facility] of the PFP. The Office of Enforcement and Investigation, in coordination with the DOE Richland Operations Office

35

Preliminary Notice of Violation, Fluor Hanford Inc. - EA-2004-06 |  

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

Hanford Inc. - EA-2004-06 Hanford Inc. - EA-2004-06 Preliminary Notice of Violation, Fluor Hanford Inc. - EA-2004-06 July 14, 2004 Preliminary Notice of Violation issued to Fluor Hanford, Incorporated, related to Deficiencies with the Design and Safety Basis of the Sludge and Water System (SWS) at the K Reactor, 100 Area, Hanford Site. Proposed Imposition of Civil Penalty $935,000. Department of Energy's Office of Price-Anderson Enforcement (OE) initiated its investigation of the SWS quality assurance and safety basis deficiencies with a review of relevant documentation. In addition, discussions that involved DOE-RL and FHI personnel took place in each organization's headquarters office at Richland, Washington, on January 27 and 28, 2004. OE's findings were provided to you in its May 6, 2004,

36

Preliminary Notice of Violation, Fluor Fernald, Inc - EA-2001-06 |  

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

Inc - EA-2001-06 Inc - EA-2001-06 Preliminary Notice of Violation, Fluor Fernald, Inc - EA-2001-06 January 4, 2002 Preliminary Notice of Violation issued to Fluor Fernald, Inc., related to Unplanned Radiation Exposures and Quality Improvement Deficiencies at the Fernald Environmental Management Project, EA-2001-06 This letter refers to the Department of Energy's (DOE) evaluation of several problems and events occurring during calendar years 2000 and 2001 in association with the Waste Pits Remedial Action Project (WPRAP). In August 2000 your staff identified a problem with elevated airborne radioactivity levels at the WPRAP T321 trailer. This long-standing deficiency resulted in a significant number of workers receiving unplanned and unmonitored radiation exposures. DOE also evaluated deficiencies related to WPRAP operator training and

37

Preliminary Notice of Violation, Fluor Hanford, Incorporated - EA-2002-03 |  

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

Hanford, Incorporated - Hanford, Incorporated - EA-2002-03 Preliminary Notice of Violation, Fluor Hanford, Incorporated - EA-2002-03 August 12, 2002 Preliminary Notice of Violation issued to Fluor Hanford, Incorporated, related to Quality Assurance issues at the Hanford Site. This letter refers to the Department of Energy's (DOE) investigation of the facts and circumstances concerning quality assurance issues affecting nuclear safety surrounding the discrepant nondestructive assay (NDA) data provided to Bechtel Hanford, Inc., in support of their decontamination and dismantlement activities at Building [ ]. The DOE Office of Price-Anderson Enforcement initiated an investigation of this event in July 2001. A formal request for relevant documentation was made and a full review of the documentation was conducted. In addition,

38

 

Gasoline and Diesel Fuel Update (EIA)

4. Lighting Equipment, Floorspace for Non-Mall Buildings, 2003 4. Lighting Equipment, Floorspace for Non-Mall Buildings, 2003 Total Floorspace (million square feet) All Buildings* Lit Buildings Lighting Equipment Types (more than one may apply) Incand- escent Standard Fluor- escent Compact Fluor- escent High-Intensity Discharge Halogen All Buildings* ............................... 64,783 62,060 38,528 59,688 27,571 20,643 17,703 Building Floorspace (Square Feet) 1,001 to 5,000 ................................ 6,789 6,038 2,918 5,579 1,123 312 604 5,001 to 10,000 .............................. 6,585 6,090 3,061 5,726 1,109 686 781 10,001 to 25,000 ............................ 11,535 11,229 6,424 10,458 2,944 1,721 1,973 25,001 to 50,000 ............................ 8,668 8,297 5,176 8,001 3,662 2,191 2,013

39

Fluor Daniel Hanford Inc. integrated safety management system phase 1 verification final report  

SciTech Connect

The purpose of this review is to verify the adequacy of documentation as submitted to the Approval Authority by Fluor Daniel Hanford, Inc. (FDH). This review is not only a review of the Integrated Safety Management System (ISMS) System Description documentation, but is also a review of the procedures, policies, and manuals of practice used to implement safety management in an environment of organizational restructuring. The FDH ISMS should support the Hanford Strategic Plan (DOE-RL 1996) to safely clean up and manage the site's legacy waste; deploy science and technology while incorporating the ISMS theme to ''Do work safely''; and protect human health and the environment.

PARSONS, J.E.

1999-10-28T23:59:59.000Z

40

VIBRATION COMPACTION  

DOE Patents (OSTI)

A method of compacting a powder in a metal container is described including the steps of vibrating the container at above and below the resonant frequency and also sweeping the frequency of vibration across the resonant frequency several times thereby following the change in resonant frequency caused by compaction of the powder. (AEC)

Hauth, J.J.

1962-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Fluor Hanford Integrated Safety Management System Phase II Verification Vol 1 and Vol 2  

E-Print Network (OSTI)

The U.S. Department of Energy (DOE) is committed to conducting work efficiently and in a manner that ensures protection of the workers, public, and environment. DOE policy mandates that safety management systems be used to systematically integrate safety into management and work practices at all levels while accomplishing mission goals in an effective and efficient manner. The purpose of the Fluor Hanford (FH) Integrated Safety Management System (ISMS) verification was to determine whether FH's ISM system and processes are sufficiently implemented to accomplish the goal of ''Do work safely.'' The purpose of the DOE, Richland Operations Office (RL) verification was to determine whether RL has established processes that adequately describe RL's role in safety management and if those processes are sufficiently implemented.

Parsons, J E

2000-01-01T23:59:59.000Z

42

Fluor Hanford Integrated Safety Management System Phase II Verification Vol 1 & Vol 2  

SciTech Connect

The U.S. Department of Energy (DOE) is committed to conducting work efficiently and in a manner that ensures protection of the workers, public, and environment. DOE policy mandates that safety management systems be used to systematically integrate safety into management and work practices at all levels while accomplishing mission goals in an effective and efficient manner. The purpose of the Fluor Hanford (FH) Integrated Safety Management System (ISMS) verification was to determine whether FH's ISM system and processes are sufficiently implemented to accomplish the goal of ''Do work safely.'' The purpose of the DOE, Richland Operations Office (RL) verification was to determine whether RL has established processes that adequately describe RL's role in safety management and if those processes are sufficiently implemented.

PARSONS, J.E.

2000-07-15T23:59:59.000Z

43

Tri-State Synfuels Project Review: Volume 12. Fluor project status. [Proposed Henderson, Kentucky coal to gasoline plant; engineering  

DOE Green Energy (OSTI)

The purpose of this report is to document and summarize activities associated with Fluor's efforts on the Tri-State Synfuels Project. The proposed facility was to be coal-to-transport fuels facility located in Henderson, Kentucky. Tri-State Synfuels Company was participating in the project as a partner of the US Department of Energy per terms of a Cooperative Agreement resulting from DOE's synfuel's program solicitation. Fluor's initial work plan called for preliminary engineering and procurement services to the point of commitment for construction for a Sasol Fischer-Tropsch plant. Work proceeded as planned until October 1981 when results of alternative coal-to-methanol studies revealed the economic disadvantage of the Synthol design for US markets. A number of alternative process studies followed to determine the best process configuration. In January 1982 Tri-State officially announced a change from Synthol to a Methanol to Gasoline (MTG) design basis. Further evaluation and cost estimates for the MTG facility eventually led to the conclusion that, given the depressed economic outlook for alternative fuels development, the project should be terminated. Official announcement of cancellation was made on April 13, 1982. At the time of project cancellation, Fluor had completed significant portions of the preliminary engineering effort. Included in this report are descriptions and summaries of Fluor's work during this project. In addition location of key project data and materials is identified and status reports for each operation are presented.

Not Available

1982-06-01T23:59:59.000Z

44

Compact accelerator  

DOE Patents (OSTI)

A compact linear accelerator having at least one strip-shaped Blumlein module which guides a propagating wavefront between first and second ends and controls the output pulse at the second end. Each Blumlein module has first, second, and third planar conductor strips, with a first dielectric strip between the first and second conductor strips, and a second dielectric strip between the second and third conductor strips. Additionally, the compact linear accelerator includes a high voltage power supply connected to charge the second conductor strip to a high potential, and a switch for switching the high potential in the second conductor strip to at least one of the first and third conductor strips so as to initiate a propagating reverse polarity wavefront(s) in the corresponding dielectric strip(s).

Caporaso, George J. (Livermore, CA); Sampayan, Stephen E. (Manteca, CA); Kirbie, Hugh C. (Los Alamos, NM)

2007-02-06T23:59:59.000Z

45

Types of Lighting in Commercial Buildings - Table L2  

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

L2. Floorspace Lit by Lighting Types (Non-Mall Buildings), 1999 L2. Floorspace Lit by Lighting Types (Non-Mall Buildings), 1999 Floorspace (million square feet) Total (Lit or Unlit) in All Buildings Total (Lit or Unlit) in Buildings With Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All Buildings* ............................. 61,707 58,693 49,779 6,496 37,150 3,058 5,343 1,913 Building Floorspace (Square Feet) 1,001 to 5,000 ............................ 6,750 5,836 4,878 757 3,838 231 109 162 5,001 to 10,000 .......................... 7,940 7,166 5,369 1,044 4,073 288 160 109 10,001 to 25,000 ....................... 10,534 9,773 7,783 1,312 5,712 358 633 232 25,001 to 50,000 ....................... 8,709 8,452 6,978 953 5,090 380 771 281

46

Types of Lighting in Commercial Buildings - Table L1  

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

L1. Floorspace Lit by Lighting Type for Non-Mall Buildings, 1995 L1. Floorspace Lit by Lighting Type for Non-Mall Buildings, 1995 Floorspace (million square feet) Total (Lit or Unlit) in All Buildings Total (Lit or Unlit) in Buildings With Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All Buildings*........................ 54,068 51,570 45,773 6,746 34,910 1,161 3,725 779 Building Floorspace (Square Feet) 1,001 to 5,000....................... 6,272 5,718 4,824 986 3,767 50 22 54 5,001 to 10,000.................... 7,299 6,667 5,728 1,240 4,341 61 169 45 10,001 to 25,000.................. 10,829 10,350 8,544 1,495 6,442 154 553 Q 25,001 to 50,000.................. 7,170 7,022 6,401 789 5,103 151 485 86

47

Types of Lighting in Commercial Buildings - Table L3  

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

L3. Floorspace Lit by Lighting Type (Non-Mall Buildings), 2003 L3. Floorspace Lit by Lighting Type (Non-Mall Buildings), 2003 Floorspace (million square feet) Total (Lit or Unlit) in All Buildings Total (Lit or Unlit) in Buildings With Any Lighting Lighted Area Only Area Lit by Each Type of Light Incan- descent Standard Fluor-escent Compact Fluor- escent High Intensity Discharge Halogen All Buildings*............................. 64,783 62,060 51,342 5,556 37,918 4,004 4,950 2,403 Building Floorspace (Square Feet) 1,001 to 5,000............................. 6,789 6,038 4,826 678 3,932 206 76 124 5,001 to 10,000........................... 6,585 6,090 4,974 739 3,829 192 238 248 10,001 to 25,000........................ 11,535 11,229 8,618 1,197 6,525 454 506 289 25,001 to 50,000........................ 8,668 8,297 6,544 763 4,971 527 454 240

48

Pecos River Compact (Texas)  

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

This legislation authorizes the state's entrance into the Pecos River Compact, a joint agreement between the states of New Mexico and Texas. The compact is administered by the Pecos River Compact...

49

Plants and Dirt Compaction  

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

Dirt Compaction Name: Conor Location: NA Country: NA Date: NA Question: When growing corn and soybean plants does the compaction of dirt effect the growth of the plant? Replies:...

50

Red River Compact (Texas)  

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

The Red River Compact Commission administers the Red River Compact to ensure that Texas receives its equitable share of quality water from the Red River and its tributaries as apportioned by the...

51

Documentation of internship at Drilco, Inc., Houston, Texas and Fluor Engineers & Constructors, Houston, Texas: an internship report  

E-Print Network (OSTI)

The first internship was conducted at the firm of Drilco, Inc. The primary engineering objective of the internship was to conduct a metrication impact study for the firm; this study was the basis for a report detailing the future metrication activites [sic] expected in the oil industry and how the firm can best meet these situations. Non-engineering objectives for this internship were also established. Investigations were conducted to determine the methods employed in the labor relations programs of the firm, methods used to conduct public relations campaigns, and how OSHA and EPA had impacted the firm. Additionally, arrangements were made to monitor a major management meeting. The second internship was conducted at Fluor Engineers and Constructors, Inc., where three majaor engineering problems and one major non-engineering problem were addressed. Successful studies were conducted in updating two instrumentation standards, in designing an Emergency Shutdown System for a unique gas compressor, and in establishing the power requirements for the instrumentation at a gas processing plant. As a non-engineering assignment, all purchase orders and requisitions dealing with instruments for an Aramco gas plant were monitored to insure that the needed material would arrive at the jobsite when needed...

Konopacki, John Michael

1977-11-01T23:59:59.000Z

52

Home Office Expenses Submitted by Fluor Federal Services, Inc., on Savannah River Nuclear Solutions, LLC's U.S. Department of Energy Management & Operating (M&O) Contract No. DE-AC09-08SR22470  

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

Home Office Expenses Submitted by Fluor Home Office Expenses Submitted by Fluor Federal Services, Inc., on Savannah River Nuclear Solutions, LLC's U.S. Department of Energy Management & Operating (M&O) Contract No. DE-AC09-08SR22470 OAS-L-13-08 April 2013 Department of Energy Washington, DC 20585 April 19, 2013 MEMORANDUM FOR THE MANAGER, SAVANNAH RIVER OPERATIONS OFFICE FROM: Rickey R. Hass Deputy Inspector General for Audits and Inspections Office of Inspector General SUBJECT: INFORMATION: Audit Report on "Home Office Expenses Submitted by Fluor Federal Services, Inc., on Savannah River Nuclear Solutions, LLC's U.S. Department of Energy Management & Operating (M&O) Contract No. DE-AC09-08SR22470" BACKGROUND The attached report presents the results of an audit of home office expenses submitted by Fluor

53

Midwest Nuclear Compact (Iowa)  

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

The Midwest Nuclear Compact establishes a Midwest Nuclear Board to cooperatively evaluate and make recommendations regarding the development of nuclear technology, distribute information about...

54

Compact baby Skyrmions  

Science Conference Proceedings (OSTI)

For the baby Skyrme model with a specific potential, compacton solutions, i.e., configurations with a compact support and parabolic approach to the vacuum, are derived. Specifically, in the nontopological sector, we find spinning Q-balls and Q-shells, as well as peakons. Moreover, we obtain compact baby skyrmions with nontrivial topological charge. All these solutions may form stable multisoliton configurations provided they are sufficiently separated.

Adam, C. [Departamento de Fisica de Particulas, Universidad de Santiago and Instituto Galego de Fisica de Altas Enerxias (IGFAE), E-15782 Santiago de Compostela (Spain); Klimas, P. [Instituto de Fisica de Sao Carlos, Universidade de Sao Carlos, Caixa Postal 369, CEP 13560-970, Sao Carlos-SP (Brazil); Sanchez-Guillen, J. [Departamento de Fisica de Particulas, Universidad de Santiago and Instituto Galego de Fisica de Altas Enerxias (IGFAE), E-15782 Santiago de Compostela (Spain); Wereszczynski, A. [Institute of Physics, Jagiellonian University, Reymonta 4, Krakow (Poland)

2009-11-15T23:59:59.000Z

55

Compactly supported cohomology of buildings  

E-Print Network (OSTI)

We compute the compactly supported cohomology of the standard realization of any locally finite building.

Davis, Michael; Januszkiewicz, Tadeusz; Meier, John; Okun, Boris

2008-01-01T23:59:59.000Z

56

Blackbody radiation with compact and non-compact extra dimensions  

E-Print Network (OSTI)

The problem of blackbody radiation in flat space with non-compact extra dimensions was analysed recently. In the present article we reanalyse this problem with compact (and non-compact) extra dimensions in flat space to observe the consequences of this approach upon Wien's displacement and Stefan-Boltzmann law.

Ramaton Ramos; Henrique Boschi-Filho

2009-10-08T23:59:59.000Z

57

Progress in Compact Toroid Experiments  

SciTech Connect

The term "compact toroids" as used here means spherical tokamaks, spheromaks, and field reversed configurations, but not reversed field pinches. There are about 17 compact toroid experiments under construction or operating, with approximate parameters listed in Table 1.

Dolan, Thomas James

2002-09-01T23:59:59.000Z

58

Microsoft Windows Embedded Compact Cryptographic ...  

Science Conference Proceedings (OSTI)

Page 1. Microsoft Windows Cryptographic Primitives Library (bcrypt.dll) Security Policy Document ... Microsoft Windows Embedded Compact ...

2013-08-07T23:59:59.000Z

59

Electronic Compact Fluorescent Lamps  

Science Conference Proceedings (OSTI)

This EPRI Technical Update addresses the fastest growing energy efficient light source the electronic compact fluorescent lamp (CFL). Business and technical market factors (Chapter 2) explain the past and future growth of the CFL market while emphasizing future technical improvements along with discussion of the importance of utility involvement in helping their customers make the switch from incandescent lamps to CFLs. The basic CFL technology is covered in Chapter 3 including test results for selected ...

2007-12-18T23:59:59.000Z

60

Compact power reactor  

DOE Patents (OSTI)

There is disclosed a small compact nuclear reactor operating in the epithermal neutron energy range for supplying power at remote locations, as for a satellite. The core contains fuel moderator elements of Zr hydride with 7 w/o of 93% enriched uranium alloy. The core has a radial beryllium reflector and is cooled by liquid metal coolant such as NaK. The reactor is controlled and shut down by moving portions of the reflector.

Wetch, Joseph R. (Woodland Hills, CA); Dieckamp, Herman M. (Canoga Park, CA); Wilson, Lewis A. (Canoga Park, CA)

1978-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Compact superradiant Cerenkov source  

Science Conference Proceedings (OSTI)

An economical, coherent, and widely tunable source does not exist spanning the far-infrared electromagnetic spectral range of 50-1000 {mu}m in wavelength. The Cerenkov free-electron laser (CFEL) is a promising candidate. This report describes an experimental investigation of a compact CFEL driven by a high-quality low-energy electron beam. Cerenkov emission and strong gain but remarkably low output coupling were observed.

Owens, I.J.; Brownell, J.H. [Department of Physics and Astronomy, Dartmouth College, Hanover, New Hampshire 03755-3528 (United States)

2005-05-15T23:59:59.000Z

62

Compact Fluorescent Lamps  

Science Conference Proceedings (OSTI)

Electric lighting constitutes approximately 21-23 % of the electric grid load in the United States. The higher energy and maintenance costs of incandescent lamps, combined with the favorable economics of high-efficiency compact fluorescent lamps (CFLs), are making CFLs the increasingly popular choice for both residential and commercial lighting. Utility incentive and rebate programs to stimulate CFL use and the beginnings of a ban on incandescent lamps are enhancing CFL penetration levels in these enviro...

2009-12-17T23:59:59.000Z

63

Compact gate valve  

DOE Patents (OSTI)

This invention relates to a double-disc gate valve which is compact, comparatively simple to construct, and capable of maintaining high closing pressures on the valve discs with low frictional forces. The valve casing includes axially aligned ports. Mounted in the casing is a sealed chamber which is pivotable transversely of the axis of the ports. The chamber contains the levers for moving the valve discs axially, and an actuator for the levers. When an external drive means pivots the chamber to a position where the discs are between the ports and axially aligned therewith, the actuator for the levers is energized to move the discs into sealing engagement with the ports.

Bobo, Gerald E. (Knoxville, TN)

1977-01-01T23:59:59.000Z

64

Compact laser amplifier system  

DOE Patents (OSTI)

A compact laser amplifier system is described in which a plurality of face-pumped annular disks, aligned along a common axis, independently radially amplify a stimulating light pulse. Partially reflective or lasing means, coaxially positioned at the center of each annualar disk, radially deflects a stimulating light directed down the common axis uniformly into each disk for amplification, such that the light is amplified by the disks in a parallel manner. Circumferential reflecting means coaxially disposed around each disk directs amplified light emission, either toward a common point or in a common direction. (Official Gazette)

Carr, R.B.

1974-02-26T23:59:59.000Z

65

Accretion in Compact Binaries  

E-Print Network (OSTI)

Compact binaries have long been a paradigm for accretion theory. Much of our present view of how accretion occurs comes directly from the comparison of theory with observations of these sources. Since theory differs little for other objects such as active galaxies, increasing efforts have recently gone into searching for correspondences in observed behaviour. This chapter aims at giving a concise summary of the field, with particular emphasis on new developments since the previous edition of this book. These developments have been significant. Much of the earlier literature implicitly assumed that accreting binaries were fairly steady sources accreting most of the mass entering their vicinity, often with main-sequence companions, and radiating the resulting accretion luminosity in rough isotropy. We shall see that in reality these assumptions fail for the majority of systems. Most are transient; mass ejection in winds and jets is extremely common; a large (sometimes dominant) fraction of even short-period systems have evolved companions whose structure deviates significantly from the zero-age main sequence; and the radiation pattern of many objects is significantly anisotropic. It is now possible to give a complete characterization of the observed incidence of transient and persistent sources in terms of the disc instability model and formation constraints. X-ray populations in external galaxies, particularly the ultraluminous sources, are revealing important new insights into accretion processes and compact binary evolution.

Andrew R. King

2003-01-07T23:59:59.000Z

66

Compact electrostatic comb actuator  

DOE Patents (OSTI)

A compact electrostatic comb actuator is disclosed for microelectromechanical (MEM) applications. The actuator is based upon a plurality of meshed electrostatic combs, some of which are stationary and others of which are moveable. One or more restoring springs are fabricated within an outline of the electrostatic combs (i.e. superposed with the moveable electrostatic combs) to considerably reduce the space required for the actuator. Additionally, a truss structure is provided to support the moveable electrostatic combs and prevent bending or distortion of these combs due to unbalanced electrostatic forces or external loading. The truss structure formed about the moveable electrostatic combs allows the spacing between the interdigitated fingers of the combs to be reduced to about one micron or less, thereby substantially increasing the number of active fingers which can be provided in a given area. Finally, electrostatic shields can be used in the actuator to substantially reduce unwanted electrostatic fields to further improve performance of the device. As a result, the compact electrostatic comb actuator of the present invention occupies only a fraction of the space required for conventional electrostatic comb actuators, while providing a substantial increase in the available drive force (up to one-hundred times).

Rodgers, M. Steven (Albuquerque, NM); Burg, Michael S. (Albuquerque, NM); Jensen, Brian D. (Albuquerque, NM); Miller, Samuel L. (Albuquerque, NM); Barnes, Stephen M. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

67

Available Technologies: Compact Hyperspectral Imager  

Scientists have developed a compact and lightweight optical device that can perform spatially resolved spectroscopy at low levels of visible light. The team led ...

68

Susquehanna River Basin Compact (Maryland)  

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

This legislation enables the state's entrance into the Susquehanna River Basin Compact, which provides for the conservation, development, and administration of the water resources of the...

69

METHOD OF FORMING ELONGATED COMPACTS  

DOE Patents (OSTI)

A powder compacting procedure and apparatus which produces elongated compacts of Be is described. The powdered metal is placed in a thin metal tube which is chemically compatible to lubricant, powder, atmosphere, and die material and will undergo a high degree of plastic deformation and have intermediate hardness. The tube is capped and placed in the die, and punches are applied to the ends. During the compacting stroke the powder seizes the tube and a thickening and shortening of the tube occurs. The tube is easily removed from the die, split, and peeled from the compact. (T.R.H.)

Larson, H.F.

1959-05-01T23:59:59.000Z

70

CIM - compact intensity modulation.  

SciTech Connect

Compact intensity modulation (CIM), a new method to modulate the intensity of a neutron beam is demonstrated. CIM allows the production of arbitrary signals where the focus point can be chosen and changed without any constraints. A novel feature in this technique compared to spin echo techniques is that the neutron polarization is kept parallel or anti-parallel to the static fields during the passage through the magnetic fields and the beating pattern at the detector is produced by an amplitude modulation (AM) of the adiabatic RF-spin flippers rather than Larmor precession like in neutron spin echo (NSE) instruments; thus, the achievable contrast is very high and the instrument resolution can be changed very quickly. This gives the fascinating possibility at pulsed neutron sources to sweep the modulation frequency of the flippers in order to increase dynamic resolution range during the same neutron pulse.

Bleuel, M.; Lang, E.; Gahler, G.; Lal, J.; Intense Pulsed Neutron Source; Inst. Lau Langevin

2008-07-21T23:59:59.000Z

71

Compact vacuum insulation embodiments  

DOE Patents (OSTI)

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially point' or line' contacts with the metal wall sheets. In the case of monolithic spacers that form line' contacts, two such spacers with the line contacts running perpendicular to each other form effectively point' contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included. 26 figs.

Benson, D.K.; Potter, T.F.

1992-04-28T23:59:59.000Z

72

Compact acoustic refrigerator  

DOE Patents (OSTI)

This invention is comprised of a compact acoustic refrigeration system that actively cools components, e.g., electrical circuits, in a borehole environment. An acoustic engine includes first thermodynamic elements for generating a standing acoustic wave in a selected medium. An acoustic refrigerator includes second thermodynamic elements located in the standing wave for generating a relatively cold temperature at a first end of the second thermodynamic elements and a relatively hot temperature at a second end of the second thermodynamic elements. A resonator volume cooperates with the first and second thermodynamic elements to support the standing wave. To accommodate the high heat fluxes required for heat transfer to/from the first and second thermodynamic elements, first heat pipes transfer heat from the heat load to the second thermodynamic elements and second heat pipes transfer heat from first and second thermodynamic elements to the borehole environment.

Bennett, G.A.

1991-12-31T23:59:59.000Z

73

Compact acoustic refrigerator  

DOE Patents (OSTI)

A compact acoustic refrigeration system actively cools components, e.g., electrical circuits, in a borehole environment. An acoustic engine includes first thermodynamic elements for generating a standing acoustic wave in a selected medium. An acoustic refrigerator includes second thermodynamic elements located in the standing wave for generating a relatively cold temperature at a first end of the second thermodynamic elements and a relatively hot temperature at a second end of the second thermodynamic elements. A resonator volume cooperates with the first and second thermodynamic elements to support the standing wave. To accommodate the high heat fluxes required for heat transfer to/from the first and second thermodynamic elements, first heat pipes transfer heat from the heat load to the second thermodynamic elements and second heat pipes transfer heat from first and second thermodynamic elements to the borehole environment. 18 figs.

Bennett, G.A.

1992-11-24T23:59:59.000Z

74

Compact acoustic refrigerator  

DOE Patents (OSTI)

A compact acoustic refrigeration system actively cools components, e.g., electrical circuits (22), in a borehole environment. An acoustic engine (12, 14) includes first thermodynamic elements (12) for generating a standing acoustic wave in a selected medium. An acoustic refrigerator (16, 26, 28) includes second thermodynamic elements (16) located in the standing wave for generating a relatively cold temperature at a first end of the second thermodynamic elements (16) and a relatively hot temperature at a second end of the second thermodynamic elements (16). A resonator volume (18) cooperates with the first and second thermodynamic elements (12, 16) to support the standing wave. To accommodate the high heat fluxes required for heat transfer to/from the first and second thermodynamic elements (12, 16), first heat pipes (24, 26) transfer heat from the heat load (22) to the second thermodynamic elements (16) and second heat pipes (28, 32) transfer heat from first and second thermodynamic elements (12, 16) to the borehole environment.

Bennett, Gloria A. (Los Alamos, NM)

1992-01-01T23:59:59.000Z

75

Compact vacuum insulation  

DOE Patents (OSTI)

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially point'' or line'' contacts with the metal wall sheets. In the case of monolithic spacers that form line'' contacts, two such spacers with the line contacts running perpendicular to each other form effectively point'' contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, D.K.; Potter, T.F.

1993-01-05T23:59:59.000Z

76

Compact vacuum insulation embodiments  

DOE Patents (OSTI)

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1992-01-01T23:59:59.000Z

77

Compact vacuum insulation  

DOE Patents (OSTI)

An ultra-thin compact vacuum insulation panel is comprised of two hard, but bendable metal wall sheets closely spaced apart from each other and welded around the edges to enclose a vacuum chamber. Glass or ceramic spacers hold the wall sheets apart. The spacers can be discrete spherical beads or monolithic sheets of glass or ceramic webs with nodules protruding therefrom to form essentially "point" or "line" contacts with the metal wall sheets. In the case of monolithic spacers that form "line" contacts, two such spacers with the line contacts running perpendicular to each other form effectively "point" contacts at the intersections. Corrugations accommodate bending and expansion, tubular insulated pipes and conduits, and preferred applications are also included.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1993-01-01T23:59:59.000Z

78

Compact vacuum insulation  

DOE Patents (OSTI)

Improved compact insulation panel is provided which is comprised of two adjacent metal sheets spaced close together with a plurality of spherical, or other discretely shaped, glass or ceramic beads optimally positioned between the sheets to provide support and maintain the spacing between the metal sheets when the gases therebetween are evacuated to form a vacuum. These spherical glass beads provide the maximum support while minimizing thermal conductance. In its preferred embodiment; these two metal sheets are textured with ribs or concave protrusions in conjunction with the glass beads to maximize the structural integrity of the panels while increasing the spacing between beads, thereby reducing the number of beads and the number of thermal conduction paths. Glass or porcelain-enameled liners in combination with the glass spacers and metal sidewalls effectively decrease thermal conductivity, and variious laminates, including wood, porcelain-enameled metal, and others effectively increase the strength and insulation capabilities of the panels. Also, a metal web is provided to hold the spacers in place, and strategic grooves are shown to accommodate expansion and contraction or shaping of the panels.

Benson, David K. (Golden, CO); Potter, Thomas F. (Denver, CO)

1992-01-01T23:59:59.000Z

79

Compact vacuum insulation  

DOE Patents (OSTI)

Improved compact insulation panel is provided which is comprised of two adjacent metal sheets spaced close together with a plurality of spherical, or other discretely shaped, glass or ceramic beads optimally positioned between the sheets to provide support and maintain the spacing between the metal sheets when the gases there between are evacuated to form a vacuum. These spherical glass beads provide the maximum support while minimizing thermal conductance. In its preferred embodiment; these two metal sheets are textured with ribs or concave protrusions in conjunction with the glass beads to maximize the structural integrity of the panels while increasing the spacing between beads, thereby reducing the number of beads and the number of thermal conduction paths. Glass or porcelain-enameled liners in combination with the glass spacers and metal sidewalls effectively decrease thermal conductivity, and various laminates, including wood, porcelain-enameled metal, and others effectively increase the strength and insulation capabilities of the panels. Also, a metal web is provided to hold the spacers in place, and strategic grooves are shown to accommodate expansion and contraction or shaping of the panels. 35 figs.

Benson, D.K.; Potter, T.F.

1992-10-27T23:59:59.000Z

80

Canadian River Compact (Texas) | Department of Energy  

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

Administration Other Agencies You are here Home Savings Canadian River Compact (Texas) Canadian River Compact (Texas) Eligibility Utility Fed. Government Commercial...

Note: This page contains sample records for the topic "fluor escent compact" 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

Rio Grande Compact (Texas) | Department of Energy  

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

Rio Grande Compact (Texas) Rio Grande Compact (Texas) Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility StateProvincial Govt Industrial...

82

New considerations for compact cyclotrons  

E-Print Network (OSTI)

A compact cyclotron built with superconducting magnets could be a transformative solution to many scientific problems facing the defense, medical, and energy industries today. This thesis discusses three potential applications ...

Marshall, Eric S. (Eric Scott)

2012-01-01T23:59:59.000Z

83

Interstate Mining Compact (Maryland) | Department of Energy  

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

You are here You are here Home » Interstate Mining Compact (Maryland) Interstate Mining Compact (Maryland) < Back Eligibility Commercial Developer Investor-Owned Utility Municipal/Public Utility Rural Electric Cooperative Utility Program Info State Maryland Program Type Environmental Regulations Provider Interstate Mining Compact Commission This legislation authorizes the state's entrance into the Interstate Mining Compact, a multi-state governmental agency / organization that represents the natural resource and related environmental protection interests of its member states. Currently, 23 states are members to the compact, and 6 additional states are associate members. The compact is administered by the Interstate Mining Compact Commission, which does not possess regulatory

84

Compact orthogonal NMR field sensor  

DOE Patents (OSTI)

A Compact Orthogonal Field Sensor for emitting two orthogonal electro-magnetic fields in a common space. More particularly, a replacement inductor for existing NMR (Nuclear Magnetic Resonance) sensors to allow for NMR imaging. The Compact Orthogonal Field Sensor has a conductive coil and a central conductor electrically connected in series. The central conductor is at least partially surrounded by the coil. The coil and central conductor are electrically or electro-magnetically connected to a device having a means for producing or inducing a current through the coil and central conductor. The Compact Orthogonal Field Sensor can be used in NMR imaging applications to determine the position and the associated NMR spectrum of a sample within the electro-magnetic field of the central conductor.

Gerald, II, Rex E. (Brookfield, IL); Rathke, Jerome W. (Homer Glen, IL)

2009-02-03T23:59:59.000Z

85

Electric Transmission Line Siting Compact  

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

Electric Transmission Line Siting Compact Electric Transmission Line Siting Compact 1 ______________________________________________________________________________ 2 ARTICLE I 3 PURPOSE 4 5 Siting electric transmission lines across state borders and federal lands is an issue for states, the 6 federal government, transmission utilities, consumers, environmentalists, and other stakeholders. 7 The current, multi-year application review process by separate and equal jurisdictions constitutes 8 a sometimes inefficient and redundant process for transmission companies and complicates the 9 efforts of state and federal policy-makers and other stakeholders to develop more robust 10 economic opportunities, increase grid reliability and security, and ensure the consumers have the 11 lowest cost electricity possible. 12

86

Compact monolithic capacitive discharge unit  

DOE Patents (OSTI)

A compact monolithic capacitive discharge unit (CDU) is disclosed in which a thyristor switch and a flyback charging circuit are both sandwiched about a ceramic energy storage capacitor. The result is a compact rugged assembly which provides a low-inductance current discharge path. The flyback charging circuit preferably includes a low-temperature co-fired ceramic transformer. The CDU can further include one or more ceramic substrates for enclosing the thyristor switch and for holding various passive components used in the flyback charging circuit. A load such as a detonator can also be attached directly to the CDU.

Roesler, Alexander W. (Tijeras, NM); Vernon, George E. (Rio Rancho, NM); Hoke, Darren A. (Albuquerque, NM); De Marquis, Virginia K. (Tijeras, NM); Harris, Steven M. (Albuquerque, NM)

2007-06-26T23:59:59.000Z

87

Compact Totally Disconnected Moufang Buildings  

E-Print Network (OSTI)

Let $\\Delta$ be a spherical building each of whose irreducible components is infinite, has rank at least 2 and satisfies the Moufang condition. We show that $\\Delta$ can be given the structure of a topological building that is compact and totally disconnected precisely when $\\Delta$ is the building at infinity of a locally finite affine building.

Grundhofer, T; Van Maldeghem, H; Weiss, R M

2010-01-01T23:59:59.000Z

88

SPALL FRACTURE AND SPALL FRACTURE AND COMPACTION COMPACTION  

National Nuclear Security Administration (NNSA)

SPALL FRACTURE AND SPALL FRACTURE AND SPALL FRACTURE AND SPALL FRACTURE AND COMPACTION COMPACTION IN NATURAL URANIUM IN NATURAL URANIUM UNDER SHOCK UNDER SHOCK - - WAVE LOADING WAVE LOADING O.A. O.A. Tyupanova Tyupanova , S.S. , S.S. Nadezhin Nadezhin , A.N. , A.N. Malyshev Malyshev , , O.N. O.N. Ignatova Ignatova , V.I. , V.I. Skokov Skokov , V.N. , V.N. Knyazev Knyazev , , V.A. V.A. Raevsky Raevsky , N.A. , N.A. Yukina Yukina Russian Federal Nuclear Center Russian Federal Nuclear Center - - VNIIEF, VNIIEF, Sarov Sarov , Russia , Russia Introduction Introduction  Nucleation and growth of defects inside a solid under pulse tensile stresses signify a necessity to consider it as a damaged medium.  A certain volume of experimental data, obtained in correct tests, which are sensitive to a characteristic under study, is necessary

89

Charlton Compact Power Ltd | Open Energy Information  

Open Energy Info (EERE)

Charlton Compact Power Ltd Charlton Compact Power Ltd Jump to: navigation, search Name Charlton Compact Power Ltd Place Frome, England, United Kingdom Zip BA11 2RH Sector Biomass Product A joint venture between A. J. Charlton & Sons and Compact Power to develop a 3.6MW to 4.5MW biomass plant in Somerset. References Charlton Compact Power Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Charlton Compact Power Ltd is a company located in Frome, England, United Kingdom . References ↑ "Charlton Compact Power Ltd" Retrieved from "http://en.openei.org/w/index.php?title=Charlton_Compact_Power_Ltd&oldid=343457" Categories: Clean Energy Organizations Companies Organizations

90

Compact High-Temperature Superconducting Cable Wins ' ...  

Science Conference Proceedings (OSTI)

Compact High-Temperature Superconducting Cable Wins 'R&D 100' Award. From NIST Tech Beat: June 22, 2011. ...

2011-07-06T23:59:59.000Z

91

Compact magnetic energy storage module  

DOE Patents (OSTI)

A superconducting compact magnetic energy storage module in which a plurality of superconducting toroids, each having a toroidally wound superconducting winding inside a poloidally wound superconducting winding, are stacked so that the flow of electricity in each toroidally wound superconducting winding is in a direction opposite from the direction of electrical flow in other contiguous superconducting toroids. This allows for minimal magnetic pollution outside of the module. 4 figures.

Prueitt, M.L.

1994-12-20T23:59:59.000Z

92

Compact magnetic energy storage module  

DOE Patents (OSTI)

A superconducting compact magnetic energy storage module in which a plurality of superconducting toroids, each having a toroidally wound superconducting winding inside a poloidally wound superconducting winding, are stacked so that the flow of electricity in each toroidally wound superconducting winding is in a direction opposite from the direction of electrical flow in other contiguous superconducting toroids. This allows for minimal magnetic pollution outside of the module.

Prueitt, Melvin L. (Los Alamos, NM)

1994-01-01T23:59:59.000Z

93

Compact portable diffraction moire interferometer  

DOE Patents (OSTI)

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observation means including film and video cameras may be used to view and record the resultant fringe patterns.

Deason, Vance A. (Shelley, ID); Ward, Michael B. (Idaho Falls, ID)

1989-01-01T23:59:59.000Z

94

Compact portable diffraction moire interferometer  

DOE Patents (OSTI)

A compact and portable moire interferometer used to determine surface deformations of an object. The improved interferometer is comprised of a laser beam, optical and fiber optics devices coupling the beam to one or more evanescent wave splitters, and collimating lenses directing the split beam at one or more specimen gratings. Observations means including film and video cameras may be used to view and record the resultant fringe patterns. 7 figs.

Deason, V.A.; Ward, M.B.

1988-05-23T23:59:59.000Z

95

Thixoforming of Stellite Powder Compacts  

SciTech Connect

Thixoforming involves processing metallic alloys in the semi-solid state. The process requires the microstructure to be spheroidal when part-solid and part-liquid i.e. to consist of solid spheroids surrounded by liquid. The aim of this work was to investigate whether powder compacts can be used as feedstock for thixoforming and whether the consolidating pressure in the thixoformer can be used to remove porosity from the compact. The powder compacts were made from stellite 6 and stellite 21 alloys, cobalt-based alloys widely used for e.g. manufacturing prostheses. Isothermal heat treatments of small samples in the consolidated state showed the optimum thixoforming temperature to be in the range 1340 deg. C-1350 deg. C for both materials. The alloys were thixoformed into graphite dies and flowed easily to fill the die. Porosity in the thixoformed components was lower than in the starting material. Hardness values at various positions along the radius of the thixoformed demonstrator component were above the specification for both alloys.

Hogg, S. C. [Institute of PolymerTechnology and Materials Engineering, Loughborough University, Loughborough, LE11 3TU (United Kingdom); Atkinson, H. V. [Department of Engineering, University of Leicester, University Rd., Leicester LE1 7RH (United Kingdom); Kapranos, P. [Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)

2007-04-07T23:59:59.000Z

96

Canadian River Compact (Texas) | Department of Energy  

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

Canadian River Compact (Texas) Canadian River Compact (Texas) Canadian River Compact (Texas) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Texas Program Type Siting and Permitting Provider Canadian River Compact Commission The Canadian River Commission administers the Canadian River Compact which includes the states of New Mexico, Oklahoma, and Texas. Signed in 1950 by

97

Prediction of reservoir compaction and surface subsidence  

SciTech Connect

A new loading-rate-dependent compaction model for unconsolidated clastic reservoirs is presented that considerably improves the accuracy of predicting reservoir rock compaction and surface subsidence resulting from pressure depletion in oil and gas fields. The model has been developed on the basis of extensive laboratory studies and can be derived from a theory relating compaction to time-dependent intergranular friction. The procedure for calculating reservoir compaction from laboratory measurements with the new model is outlined. Both field and laboratory compaction behaviors appear to be described by one single normalized, nonlinear compaction curve. With the new model, the large discrepancies usually observed between predictions based on linear compaction models and actual (nonlinear) field behavior can be explained.

De Waal, J.A.; Smits, R.M.M.

1988-06-01T23:59:59.000Z

98

Residual Stress Tensor in a Compact Tension Weld Specimen  

Science Conference Proceedings (OSTI)

Presentation Title, Residual Stress Tensor in a Compact Tension Weld Specimen ... austenitic stainless steel (Esshete 1250) compact tension weld specimen.

99

Compacted carbon for electrochemical cells  

DOE Patents (OSTI)

This invention provides compacted carbon that is useful in the electrode of an alkali metal/carbon electrochemical cell of improved capacity selected from the group consisting of: (a) coke having the following properties: (i) an x-ray density of at least 2.00 grams per cubic centimeters, (ii) a closed porosity of no greater than 5%, and (iii) an open porosity of no greater than 47%; and (b) graphite having the following properties: (i) an x-ray density of at least 2.20 grams per cubic centimeters, (ii) a closed porosity of no greater than 5%, and (iii) an open porosity of no greater than 25%. This invention also relates to an electrode for an alkali metal/carbon electrochemical cell comprising compacted carbon as described above and a binder. This invention further provides an alkali metal/carbon electrochemical cell comprising: (a) an electrode as described above, (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrolytically conductive salt and an alkali metal, and (c) a counterelectrode.

Greinke, Ronald Alfred (Medina, OH); Lewis, Irwin Charles (Strongsville, OH)

1997-01-01T23:59:59.000Z

100

Compacted carbon for electrochemical cells  

DOE Patents (OSTI)

This invention provides compacted carbon that is useful in the electrode of an alkali metal/carbon electrochemical cell of improved capacity selected from the group consisting of: (a) coke having the following properties: (1) an x-ray density of at least 2.00 grams per cubic centimeters, (2) a closed porosity of no greater than 5%, and (3) an open porosity of no greater than 47%; and (b) graphite having the following properties: (1) an x-ray density of at least 2.20 grams per cubic centimeters, (2) a closed porosity of no greater than 5%, and (3) an open porosity of no greater than 25%. This invention also relates to an electrode for an alkali metal/carbon electrochemical cell comprising compacted carbon as described above and a binder. This invention further provides an alkali metal/carbon electrochemical cell comprising: (a) an electrode as described above, (b) a non-aqueous electrolytic solution comprising an organic aprotic solvent and an electrolytically conductive salt and an alkali metal, and (c) a counter electrode. 10 figs.

Greinke, R.A.; Lewis, I.C.

1997-10-14T23:59:59.000Z

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


101

Method for preparing porous metal hydride compacts  

DOE Patents (OSTI)

A method for preparing porous metallic-matrix hydride compacts which can be repeatedly hydrided and dehydrided without disintegration. A mixture of a finely divided metal hydride and a finely divided matrix metal is contacted with a poison which prevents the metal hydride from dehydriding at room temperature and atmospheric pressure. The mixture of matrix metal and poisoned metal hydride is then compacted under pressure at room temperature to form porous metallic-matrix hydride compacts.

Ron, M.; Gruen, D.M.; Mendelsohn, M.H.; Sheft, I.

1980-01-21T23:59:59.000Z

102

Compact Solid State Cooling Systems: Compact MEMS Electrocaloric Module  

SciTech Connect

BEETIT Project: UCLA is developing a novel solid-state cooling technology to translate a recent scientific discovery of the so-called giant electrocaloric effect into commercially viable compact cooling systems. Traditional air conditioners use noisy, vapor compression systems that include a polluting liquid refrigerant to circulate within the air conditioner, absorb heat, and pump the heat out into the environment. Electrocaloric materials achieve the same result by heating up when placed within an electric field and cooling down when removedeffectively pumping heat out from a cooler to warmer environment. This electrocaloric-based solid state cooling system is quiet and does not use liquid refrigerants. The innovation includes developing nano-structured materials and reliable interfaces for heat exchange. With these innovations and advances in micro/nano-scale manufacturing technologies pioneered by semiconductor companies, UCLA is aiming to extend the performance/reliability of the cooling module.

None

2010-10-01T23:59:59.000Z

103

Dedicated Compact Refinery - Programmaster.org  

Science Conference Proceedings (OSTI)

Meeting, 2013 TMS Annual Meeting & Exhibition ... capital cost per tonne of alumina (tA) capacity; * Compact plant production capacity, resulting in a simple and...

104

Compact Absorption Chiller - Energy Innovation Portal  

The Compact Absorption Chiller uses microchannel technologies in an absorption heat pump which produces cooling using heat as the primary energy source.

105

Compact submanifolds supporting singular interactions  

E-Print Network (OSTI)

A quantum particle moving under the influence of singular interactions on embedded surfaces furnish an interesting example from the spectral point of view. In these problems, the possible occurrence of a bound state is perhaps the most important aspect. Such systems can be introduced as quadratic forms and generically they do not require renormalization. Yet an alternative path through the resolvent is also beneficial to study various properties. In the present work, we address these issues for compact surfaces embedded in a class of ambient manifolds. We discover that there is an exact bound state solution written in terms of the heat kernel of the ambient manifold for a range of coupling strengths. Moreover, we develop techniques to estimate bounds on the ground state energy when several surfaces, each of which admits a bound state solution, coexist.

Kaynak, Burak Tevfik

2013-01-01T23:59:59.000Z

106

Compact submanifolds supporting singular interactions  

E-Print Network (OSTI)

A quantum particle moving under the influence of singular interactions on embedded surfaces furnish an interesting example from the spectral point of view. In these problems, the possible occurrence of a bound state is perhaps the most important aspect. Such systems can be introduced as quadratic forms and generically they do not require renormalization. Yet an alternative path through the resolvent is also beneficial to study various properties. In the present work, we address these issues for compact surfaces embedded in a class of ambient manifolds. We discover that there is an exact bound state solution written in terms of the heat kernel of the ambient manifold for a range of coupling strengths. Moreover, we develop techniques to estimate bounds on the ground state energy when several surfaces, each of which admits a bound state solution, coexist.

Burak Tevfik Kaynak; O. Teoman Turgut

2013-05-24T23:59:59.000Z

107

Compactness of the space of causal curves  

E-Print Network (OSTI)

We prove that the space of causal curves between compact subsets of a separable globally hyperbolic poset is itself compact in the Vietoris topology. Although this result implies the usual result in general relativity, its proof does not require the use of geometry or differentiable structure.

Keye Martin

2004-08-19T23:59:59.000Z

108

Compaction within the South Belridge diatomite  

SciTech Connect

Compaction is incorporated into a field-scale finite-difference thermal simulator to allow practical engineering analysis of reservoir compaction caused by fluid withdrawal. Capabilities new to petroleum applications include hysteresis in the form of limited rebound during fluid injection and the concept of relaxation time (i.e., creep).

Chase C.A. Jr.; Dietrich, J.K. (Todd, Dietrich and Chase Inc., Durango, CO (US))

1989-11-01T23:59:59.000Z

109

Compact Process Development at Babcock & Wilcox  

Science Conference Proceedings (OSTI)

Multiple process approaches have been used historically to manufacture cylindrical nuclear fuel compacts. Scale-up of fuel compacting was required for the Next Generation Nuclear Plant (NGNP) project to achieve an economically viable automated production process capable of providing a minimum of 10 compacts/minute with high production yields. In addition, the scale-up effort was required to achieve matrix density equivalent to baseline historical production processes, and allow compacting at fuel packing fractions up to 46% by volume. The scale-up approach of jet milling, fluid-bed overcoating, and hot-press compacting adopted in the U.S. Advanced Gas Reactor (AGR) Fuel Development Program involves significant paradigm shifts to capitalize on distinct advantages in simplicity, yield, and elimination of mixed waste. A series of compaction trials have been completed to optimize compaction conditions of time, temperature, and forming pressure using natural uranium oxycarbide (NUCO) fuel at packing fractions exceeding 46% by volume. Results from these trials are included. The scale-up effort is nearing completion with the process installed and operable using nuclear fuel materials. Final process testing is in progress to certify the process for manufacture of qualification test fuel compacts in 2012.

Eric Shaber; Jeffrey Phillips

2012-03-01T23:59:59.000Z

110

Electric Pulse Method for Compaction of the Mononitride Uranium ...  

Science Conference Proceedings (OSTI)

Presentation Title, Electric Pulse Method for Compaction of the Mononitride ... reactors and also the advantages of the electric pulse compaction method.

111

Compact Cross-Dipole Sonic (CXD) | Open Energy Information  

Open Energy Info (EERE)

2010 DOI Not Provided Check for DOI availability: http:crossref.org Online Internet link for Compact Cross-Dipole Sonic (CXD) Citation Weatherford. Compact Cross-Dipole...

112

NERSC and CRD Help Decipher Science from Compact Accelerator...  

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

and CRD Help Decipher Science from Compact Accelerator Simulations NERSC and CRD Help Decipher Science from Compact Accelerator Simulations May 26, 2009 3D Particle Surfing :...

113

Southeast Interstate Low-Level Radioactive Waste Management Compact...  

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

Southeast Interstate Low-Level Radioactive Waste Management Compact (multi-state) Southeast Interstate Low-Level Radioactive Waste Management Compact (multi-state) Eligibility...

114

Simulation of Powder Compact Forging Process for Producing a ...  

Science Conference Proceedings (OSTI)

Presentation Title, Simulation of Powder Compact Forging Process for Producing a ... Powder compact forging is a recently developed manufacturing process to...

115

Northwest Interstate Compact on Low-Level Radioactive Waste Management...  

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

Northwest Interstate Compact on Low-Level Radioactive Waste Management (Multiple States) Northwest Interstate Compact on Low-Level Radioactive Waste Management (Multiple States)...

116

Atlantic Interstate Low-Level Radioactive Waste Management Compact...  

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

Atlantic Interstate Low-Level Radioactive Waste Management Compact (South Carolina) Atlantic Interstate Low-Level Radioactive Waste Management Compact (South Carolina) Eligibility...

117

Compact Filter Design for Gas Treatment Centers - Programmaster.org  

Science Conference Proceedings (OSTI)

An Innovative Compact Heat Exchanger Solution for Aluminium Off-Gas Cooling and Heat Recovery Autonomous Vehicle and Smelter Technologies Compact...

118

Compact Fluorescent Lamps : Technologies : From the Lab to the...  

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

process. (Left) Compact Fluorescent Lamp; (Right) Cover of the 'Lighting Retrofit Workbook' (Left) Compact Fluorescent Lamp (CFL) (Right) Retrofitting national parks...

119

Belle Fourche River Compact (South Dakota) | Department of Energy  

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

Other Agencies You are here Home Savings Belle Fourche River Compact (South Dakota) Belle Fourche River Compact (South Dakota) Eligibility Agricultural...

120

Pharmaceutical tablet compaction : product and process design  

E-Print Network (OSTI)

This thesis explores how tablet performance is affected by microstructure, and how microstructure can be controlled by selection of excipients and compaction parameters. A systematic strategy for formulation and process ...

Pore, Mridula

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Compact Spatial Differencing Techniques in Numerical Modeling  

Science Conference Proceedings (OSTI)

The accuracies of the usual centered differencing, compact differencing and finite element methods are compared linearly with a geostrophic adjustment problem and nonlinearly with a vorticity advection problem. The finite element method provides ...

Hai-Ru Chang; Hampton N. Shirer

1985-04-01T23:59:59.000Z

122

Steady state compact toroidal plasma production  

DOE Patents (OSTI)

Apparatus and method for maintaining steady state compact toroidal plasmas. A compact toroidal plasma is formed by a magnetized coaxial plasma gun and held in close proximity to the gun electrodes by applied magnetic fields or magnetic fields produced by image currents in conducting walls. Voltage supply means maintains a constant potential across the electrodes producing an increasing magnetic helicity which drives the plasma away from a minimum energy state. The plasma globally relaxes to a new minimum energy state, conserving helicity according to Taylor's relaxation hypothesis, and injecting net helicity into the core of the compact toroidal plasma. Controlling the voltage so as to inject net helicity at a predetermined rate based on dissipative processes maintains or increases the compact toroidal plasma in a time averaged steady state mode.

Turner, William C. (Livermore, CA)

1986-01-01T23:59:59.000Z

123

A CMOS-compatible compact display  

E-Print Network (OSTI)

Portable information devices demand displays with high resolution and high image quality that are increasingly compact and energy-efficient. Microdisplays consisting of a silicon CMOS backplane integrated with light ...

Chen, Andrew R. (Andrew Raymond)

2005-01-01T23:59:59.000Z

124

Roller-Compacted Concrete for Dams  

Science Conference Proceedings (OSTI)

Placing mass concrete by the roller-compacted method improves the economics of hydroelectric dam construction. Many sites previously considered uneconomical for embankment or conventional concrete construction may now prove feasible.

1986-09-29T23:59:59.000Z

125

Compact reflective imaging spectrometer utilizing immersed gratings  

DOE Patents (OSTI)

A compact imaging spectrometer comprising an entrance slit for directing light, a first mirror that receives said light and reflects said light, an immersive diffraction grating that diffracts said light, a second mirror that focuses said light, and a detector array that receives said focused light. The compact imaging spectrometer can be utilized for remote sensing imaging spectrometers where size and weight are of primary importance.

Chrisp, Michael P. (Danville, CA)

2006-05-09T23:59:59.000Z

126

Reservoir compaction loads on casings and liners  

Science Conference Proceedings (OSTI)

Pressure drawdown due to production from a reservoir causes compaction of the reservoir formation which induces axial and radial loads on the wellbore. Reservoir compaction loads increase during the production life of a well, and are greater for deviated wells. Presented here are casing and liner loads at initial and final pressure drawdowns for a particular reservoir and at well deviation angles of 0 to 45 degrees.

Wooley, G.R.; Prachner, W.

1984-09-01T23:59:59.000Z

127

Compact binary mergers: an astrophysical perspective  

E-Print Network (OSTI)

This paper reviews the current understanding of double neutron star and neutron star black hole binaries. It addresses mainly (nuclear) astrophysics aspects of compact binary mergers and thus complements recent reviews that have emphasized the numerical relativity viewpoint. In particular, the paper discusses different channels to release neutron-rich matter into the host galaxy, connections between compact binary mergers and short Gamma-ray bursts and accompanying electromagnetic signals.

S. Rosswog

2010-12-04T23:59:59.000Z

128

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

129

Technology Selections for Cylindrical Compact Fabrication  

SciTech Connect

A variety of process approaches are available and have been used historically for manufacture of cylindrical fuel compacts. The jet milling, fluid bed overcoating, and hot press compacting approach being adopted in the U.S. AGR Fuel Development Program for scale-up of the compacting process involves significant paradigm shifts from historical approaches. New methods are being pursued because of distinct advantages in simplicity, yield, and elimination of process mixed waste. Recent advances in jet milling technology allow simplified dry matrix powder preparation. The matrix preparation method is well matched with patented fluid bed powder overcoating technology recently developed for the pharmaceutical industry and directly usable for high density fuel particle matrix overcoating. High density overcoating places fuel particles as close as possible to their final position in the compact and is matched with hot press compacting which fully fluidizes matrix resin to achieve die fill at low compacting pressures and without matrix end caps. Overall the revised methodology provides a simpler process that should provide very high yields, improve homogeneity, further reduce defect fractions, eliminate intermediate grading and QC steps, and allow further increases in fuel packing fractions.

Jeffrey A. Phillips

2010-10-01T23:59:59.000Z

130

Compact fission counter for DANCE  

SciTech Connect

The Detector for Advanced Neutron Capture Experiments (DANCE) consists of 160 BF{sub 2} crystals with equal solid-angle coverage. DANCE is a 4{pi} {gamma}-ray calorimeter and designed to study the neutron-capture reactions on small quantities of radioactive and rare stable nuclei. These reactions are important for the radiochemistry applications and modeling the element production in stars. The recognition of capture event is made by the summed {gamma}-ray energy which is equivalent of the reaction Q-value and unique for a given capture reaction. For a selective group of actinides, where the neutron-induced fission reaction competes favorably with the neutron capture reaction, additional signature is needed to distinguish between fission and capture {gamma} rays for the DANCE measurement. This can be accomplished by introducing a detector system to tag fission fragments and thus establish a unique signature for the fission event. Once this system is implemented, one has the opportunity to study not only the capture but also fission reactions. A parallel-plate avalanche counter (PPAC) has many advantages for the detection of heavy charged particles such as fission fragments. These include fast timing, resistance to radiation damage, and tolerance of high counting rate. A PPAC also can be tuned to be insensitive to {alpha} particles, which is important for experiments with {alpha}-emitting actinides. Therefore, a PPAC is an ideal detector for experiments requiring a fast and clean trigger for fission. A PPAC with an ingenious design was fabricated in 2006 by integrating amplifiers into the target assembly. However, this counter was proved to be unsuitable for this application because of issues related to the stability of amplifiers and the ability to separate fission fragments from {alpha}'s. Therefore, a new design is needed. A LLNL proposal to develop a new PPAC for DANCE was funded by NA22 in FY09. The design goal is to minimize the mass for the proposed counter and still be able to maintain a stable operation under extreme radioactivity and the ability to separate fission fragments from {alpha}'s. In the following sections, the description is given for the design and performance of this new compact PPAC, for studying the neutron-induced reactions on actinides using DANCE at LANL.

Wu, C Y; Chyzh, A; Kwan, E; Henderson, R; Gostic, J; Carter, D; Bredeweg, T; Couture, A; Jandel, M; Ullmann, J

2010-11-06T23:59:59.000Z

131

Strategy Guideline: Compact Air Distribution Systems  

SciTech Connect

This Strategy Guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. Traditional systems sized by 'rule of thumb' (i.e., 1 ton of cooling per 400 ft2 of floor space) that 'wash' the exterior walls with conditioned air from floor registers cannot provide appropriate air mixing and moisture removal in low-load homes. A compact air distribution system locates the HVAC equipment centrally with shorter ducts run to interior walls, and ceiling supply outlets throw the air toward the exterior walls along the ceiling plane; alternatively, high sidewall supply outlets throw the air toward the exterior walls. Potential drawbacks include resistance from installing contractors or code officials who are unfamiliar with compact air distribution systems, as well as a lack of availability of low-cost high sidewall or ceiling supply outlets to meet the low air volumes with good throw characteristics. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

Burdick, A.

2013-06-01T23:59:59.000Z

132

Compaction and Sintering of Mo Powders  

SciTech Connect

To support the development of Mo-99 production by NorthStar Medical Technologies, LLC, Mo metal powders were evaluated for compaction and sintering characteristics as they relate to Mo-100 accelerator target disk fabrication. Powders having a natural isotope distribution and enriched Mo-100 powder were examined. Various powder characteristics are shown to have an effect on both the compaction and sintering behavior. Natural Mo powders could be cold pressed directly to >90% density. All of the powders, including the Mo-100 samples, could be sintered after cold pressing to >90% density. As an example, a compacted Mo-100 disk reached 89.7% density (9.52 g/cm3) after sintering at 1000 C for 1 hr. in flowing Ar/4%H2. Higher sintering temperatures were required for other powder samples. The relationships between processing conditions and the resulting densities of consolidated Mo disks will be presented.

Nunn, Stephen D [ORNL; Kiggans, Jim [ORNL; Bryan, Chris [ORNL

2013-01-01T23:59:59.000Z

133

Compact Power Inc CPI | Open Energy Information  

Open Energy Info (EERE)

Compact Power Inc CPI Compact Power Inc CPI Jump to: navigation, search Name Compact Power Inc (CPI) Place Troy, Michigan Zip 48083 Sector Vehicles Product Producer of lithium-ion batteries for Hybrid Electric Vehicles (HEV) and non-automotive (commercial and military) markets. Coordinates 39.066587°, -80.768578° 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":39.066587,"lon":-80.768578,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

134

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system is described for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut.

Coyne, M.J.; Fiscus, G.M.; Sammel, A.G.

1996-12-31T23:59:59.000Z

135

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut.

Coyne, Martin J. (Pittsburgh, PA); Fiscus, Gregory M. (McMurray, PA); Sammel, Alfred G. (Pittsburgh, PA)

1998-01-01T23:59:59.000Z

136

Remote vacuum compaction of compressible hazardous waste  

DOE Patents (OSTI)

A system is described for remote vacuum compaction and containment of low-level radioactive or hazardous waste comprising a vacuum source, a sealable first flexible container, and a sealable outer flexible container for receiving one or more first flexible containers. A method for compacting low level radioactive or hazardous waste materials at the point of generation comprising the steps of sealing the waste in a first flexible container, sealing one or more first containers within an outer flexible container, breaching the integrity of the first containers, evacuating the air from the inner and outer containers, and sealing the outer container shut. 8 figs.

Coyne, M.J.; Fiscus, G.M.; Sammel, A.G.

1998-10-06T23:59:59.000Z

137

Momentum compaction and phase slip factor  

SciTech Connect

Section 2.3.11 of the Handbook of Accelerator Physics and Engineering on Landau damping is updated. The slip factor and its higher orders are given in terms of the various orders of the momentum compaction. With the aid of a simplified FODO lattice, formulas are given for the alteration of the lower orders of the momentum compaction by various higher multipole magnets. The transition to isochronicity is next demonstrated. Formulas are given for the extraction of the first three orders of the slip factor from the measurement of the synchrotron tune while changing the rf frequency. Finally bunch-length compression experiments in semi-isochronous rings are reported.

Ng, K.Y.; /Fermilab

2010-10-01T23:59:59.000Z

138

Compaction Scale Up and Optimization of Cylindrical Fuel Compacts for the Next Generation Nuclear Plant  

Science Conference Proceedings (OSTI)

Multiple process approaches have been used historically to manufacture cylindrical nuclear fuel compacts. Scale-up of fuel compacting was required for the Next Generation Nuclear Plant (NGNP) project to achieve an economically viable automated production process capable of providing a minimum of 10 compacts/minute with high production yields. In addition, the scale-up effort was required to achieve matrix density equivalent to baseline historical production processes, and allow compacting at fuel packing fractions up to 46% by volume. The scale-up approach of jet milling, fluid-bed overcoating, and hot-press compacting adopted in the U.S. Advanced Gas Reactor (AGR) Fuel Development Program involves significant paradigm shifts to capitalize on distinct advantages in simplicity, yield, and elimination of mixed waste. A series of designed experiments have been completed to optimize compaction conditions of time, temperature, and forming pressure using natural uranium oxycarbide (NUCO) fuel. Results from these experiments are included. The scale-up effort is nearing completion with the process installed and operational using nuclear fuel materials. The process is being certified for manufacture of qualification test fuel compacts for the AGR-5/6/7 experiment at the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL).

Jeffrey J. Einerson; Jeffrey A. Phillips; Eric L. Shaber; Scott E. Niedzialek; W. Clay Richardson; Scott G. Nagley

2012-10-01T23:59:59.000Z

139

FODO-Supercell Based Compact Ring Design with Tunable Momentum Compaction and Optimized Dynamic Aperture  

Science Conference Proceedings (OSTI)

A storage ring with tunable momentum compaction has the advantage in achieving different RMS bunch length with similar RF capacity, which is potentially useful for many applications, such as linear collider damping ring and predamping ring where injected beam has a large energy spread and a large transverse emittance. A tunable bunch length also makes the commissioning and fine tuning easier in manipulating the single bunch instabilities. In this paper, a compact ring design based on a supercell is presented, which achieves a tunable momentum compaction while maintaining a large dynamic aperture.

Sun, Yipeng; /SLAC

2012-05-03T23:59:59.000Z

140

FODO-Supercell Based Compact Ring Design with Tunable Momentum Compaction and Optimized Dynamic Aperture  

Science Conference Proceedings (OSTI)

A storage ring with tunable momentum compaction has the advantage in achieving different RMS bunch length with similar RF capacity, which is potentially useful for many applications, such as linear collider damping ring and pre-damping ring where injected beam has a large energy spread and a large transverse emittance. A tunable bunch length also makes the commissioning and fine tuning easier in manipulating the single bunch instabilities. In this paper, a compact ring design based on a supercell is presented, which achieves a tunable momentum compaction while maintaining a large dynamic aperture.

Sun, Yipeng; /SLAC

2012-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Interstate Mining Compact Commission (multi-state) | Department of Energy  

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

You are here You are here Home » Interstate Mining Compact Commission (multi-state) Interstate Mining Compact Commission (multi-state) < Back Eligibility Commercial Construction Developer Industrial Investor-Owned Utility Local Government Municipal/Public Utility Rural Electric Cooperative Systems Integrator Tribal Government Utility Program Info Start Date 1970 State Alabama Program Type Safety and Operational Guidelines Siting and Permitting Provider Interstate Mining Compact Commission The Interstate Mining Compact is a multi-state governmental agency / organization that represents the natural resource and related environmental protection interests of its member states. Currently, 23 states are members to the compact, and 6 additional states are associate members. The compact

142

Compact Ultradense Objects in the Solar System  

E-Print Network (OSTI)

We describe properties and gravitational interactions of meteor-mass and greater compact ultra dense objects with nuclear density or greater (CUDO s). We discuss possible enclosure of CUDO s in comets, stability of these objects on impact with the Earth and Sun and show that the hypothesis of a CUDO core helps resolve issues challenging the understanding of a few selected cometary impacts.

J. Rafelski; Ch. Dietl; L. Labun

2013-03-19T23:59:59.000Z

143

Energy Performance of Compact Fluorescent Lamps  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study presents the results of tests performed at the Worcester Polytechnic Institute, in contract with the EPRI Power Electronics Applications Center (PEAC), to determine the light output, power consumption, efficiency, and power factor of off-the-shelf electronic and magnetic compact fluorescent lamps.

2003-12-31T23:59:59.000Z

144

Duke Power Compact PHOCUS Boresonic System Evaluation  

Science Conference Proceedings (OSTI)

Reliable and repeatable boresonic inspection of turbine rotors and generators is critical for accurately predicting remaining life. EPRI's boresonic system evaluation program provides utilities with insight into commercial boresonic system performance capabilities. This report, one in a series of boresonic system evaluations, features an assessment of Duke Power Company's compact PHOCUS boresonic inspection system.

1994-05-07T23:59:59.000Z

145

Compact upwind schemes on adaptive octrees  

Science Conference Proceedings (OSTI)

Compact high-order upwind schemes using reconstruction from cell-averages are derived for application with the compressible three-dimensional Navier-Stokes equations. An adaptive-octree mesh, combined with the Adams-Bashforth-Moulton family of predictor-corrector ... Keywords: Finite-volume, High-order, Navier-Stokes, Predictor-corrector

Scott M. Murman

2010-02-01T23:59:59.000Z

146

Compact range for variable-zone measurements  

DOE Patents (OSTI)

A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector. 2 figs.

Burnside, W.D.; Rudduck, R.C.; Yu, J.S.

1987-02-27T23:59:59.000Z

147

Compact range for variable-zone measurements  

DOE Patents (OSTI)

A compact range for testing antennas or radar targets includes a source for directing energy along a feedline toward a parabolic reflector. The reflected wave is a spherical wave with a radius dependent on the distance of the source from the focal point of the reflector.

Burnside, Walter D. (Columbus, OH); Rudduck, Roger C. (Columbus, OH); Yu, Jiunn S. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

148

A Compact Lightweight Aerosol Spectrometer Probe (CLASP)  

Science Conference Proceedings (OSTI)

The Compact Lightweight Aerosol Spectrometer Probe (CLASP) is an optical particle spectrometer capable of measuring size-resolved particle concentrations in 16 user-defined size bins spanning diameters in the range 0.24 < D < 18.5 ?m at a rate of ...

Martin K. Hill; Barbara J. Brooks; Sarah J. Norris; Michael H. Smith; Ian M. Brooks; Gerrit de Leeuw

2008-11-01T23:59:59.000Z

149

FLUORES ENT OPTI AL POSITION SENSOR  

POTENTIAL APPLI ATIONS TE HNOLOGI AL Hazardous environments Oil & gas drilling Mineral drilling Water well drilling ENEFITS Measures fluorescent light ...

150

Federal Energy Management Program: Energy Cost Calculator for Compact  

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

Compact Fluorescent Lamps to someone by E-mail Compact Fluorescent Lamps to someone by E-mail Share Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on Facebook Tweet about Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on Twitter Bookmark Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on Google Bookmark Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on Delicious Rank Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on Digg Find More places to share Federal Energy Management Program: Energy Cost Calculator for Compact Fluorescent Lamps on AddThis.com... Energy-Efficient Products Federal Requirements Covered Product Categories

151

Classification of linearly compact simple Jordan and generalized Poisson superalgebras  

E-Print Network (OSTI)

We classify all linearly compact simple Jordan superalgebras over an algebraically closed field of characteristic zero. As a corollary, we deduce the classification of all linearly compact unital simple generalized Poisson superalgebras.

Nicoletta Cantarini; Victor G. Kac; To Ernest; Borisovich Vinberg

2006-01-01T23:59:59.000Z

152

Southeast Interstate Low-Level Radioactive Waste Management Compact (multi-state)  

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

The Southeast Interstate Low-Level Radioactive Waste Management Compact is administered by the Compact Commission. The Compact provides for rotating responsibility for the region's low-level...

153

Cape Light Compact - Commercial, Industrial and Municipal Buildings...  

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

Industrial and Municipal Buildings Energy Efficiency Rebate Program Cape Light Compact - Commercial, Industrial and Municipal Buildings Energy Efficiency Rebate Program...

154

Preliminary Investigation into the Effect of Green Compact ...  

Science Conference Proceedings (OSTI)

May 1, 2007 ... Preliminary Investigation into the Effect of Green Compact Microstructural Design on the Density of Combustion Synthesized Aluminide...

155

Review: Sensor systems for measuring soil compaction: Review and analysis  

Science Conference Proceedings (OSTI)

Spatially variable soil compaction often causes inconsistent growing conditions in many fields. Various soil compaction sensor systems have been deployed to obtain georeferenced maps of certain state and behavioral properties (e.g., soil strength, water ... Keywords: Air permeability, Penetrometer, Sensor fusion, Soil compaction, Soil mechanical resistance, Soil mechanics, Water content

A. Hemmat; V. I. Adamchuk

2008-10-01T23:59:59.000Z

156

Compact fast analyzer of rotary cuvette type  

DOE Patents (OSTI)

A compact fast analyzer of the rotary cuvette type is provided for simultaneously determining concentrations in a multiplicity of discrete samples using either absorbance or fluorescence measurement techniques. A rigid, generally rectangular frame defines optical passageways for the absorbance and fluorescence measurement systems. The frame also serves as a mounting structure for various optical components as well as for the cuvette rotor mount and drive system. A single light source and photodetector are used in making both absorbance and fluorescence measurements. Rotor removal and insertion are facilitated by a swing-out drive motor and rotor mount. BACKGROUND OF THE INVENTION The invention relates generally to concentration measuring instruments and more specifically to a compact fast analyzer of the rotary cuvette type which is suitable for making either absorbance or fluorescence measurements. It was made in the course of, or under, a contract with the U.S. Atomic Energy Commission.

Thacker, Louis H. (Knoxville, TN)

1976-01-01T23:59:59.000Z

157

A compact high voltage pulse generator  

SciTech Connect

A compact, easily transportable, pulse generator has been developed for a variety of applications that require a pulse duration in the range of 1 {mu} sec., voltages from 150 to 300 KV and current levels from 2,000 to 3,000 amps. The generator has a simple cylindrical configuration and modular construction to facilitate assembly and service. The generator may be operated single-pulse or repetitively at pulse repetition rates to 50 Hz in a burst mode.

Rohwein, G.J.; Babcock, S.R.

1994-07-01T23:59:59.000Z

158

Compact x-ray source and panel  

SciTech Connect

A compact, self-contained x-ray source, and a compact x-ray source panel having a plurality of such x-ray sources arranged in a preferably broad-area pixelized array. Each x-ray source includes an electron source for producing an electron beam, an x-ray conversion target, and a multilayer insulator separating the electron source and the x-ray conversion target from each other. The multi-layer insulator preferably has a cylindrical configuration with a plurality of alternating insulator and conductor layers surrounding an acceleration channel leading from the electron source to the x-ray conversion target. A power source is connected to each x-ray source of the array to produce an accelerating gradient between the electron source and x-ray conversion target in any one or more of the x-ray sources independent of other x-ray sources in the array, so as to accelerate an electron beam towards the x-ray conversion target. The multilayer insulator enables relatively short separation distances between the electron source and the x-ray conversion target so that a thin panel is possible for compactness. This is due to the ability of the plurality of alternating insulator and conductor layers of the multilayer insulators to resist surface flashover when sufficiently high acceleration energies necessary for x-ray generation are supplied by the power source to the x-ray sources.

Sampayon, Stephen E. (Manteca, CA)

2008-02-12T23:59:59.000Z

159

The Size of Compact Extra Dimensions from Blackbody Radiation Laws  

E-Print Network (OSTI)

In this work we generalize the Stefan-Boltzmann and Wien's displacement laws for a D-dimensional spacetime composed by 4 non-compact dimensions and D-4 compact dimensions. The electromagnetic field is assumed to pervade all compact and non-compact dimensions. In particular, the total radiated power becomes R(T) = \\sigma_B T^4 + \\sigma_D (a) T^D, where a is the size of compact extra dimensions. For D=10, predicted from String Theory, and D=11, from M-Theory, the outcomes agree with available experimental data for a as high as 2 x 10^{-7} m.

Ramaton Ramos; Henrique Boschi-Filho

2011-11-10T23:59:59.000Z

160

The Size of Compact Extra Dimensions from Blackbody Radiation Laws  

E-Print Network (OSTI)

In this work we generalize the Stefan-Boltzmann and Wien's displacement laws for a D-dimensional spacetime composed by 4 non-compact dimensions and D-4 compact dimensions. The electromagnetic field is assumed to pervade all compact and non-compact dimensions. In particular, the total radiated power becomes R(T) = \\sigma_B T^4 + \\sigma_D (a) T^D, where a is the size of compact extra dimensions. For D=10, predicted from String Theory, and D=11, from M-Theory, the outcomes agree with available experimental data for a as high as 2 x 10^{-7} m.

Ramos, Ramaton

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Interstate Oil and Gas Conservation Compact (Maryland) | Department of  

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

Interstate Oil and Gas Conservation Compact (Maryland) Interstate Oil and Gas Conservation Compact (Maryland) Interstate Oil and Gas Conservation Compact (Maryland) < Back Eligibility Commercial Construction Fed. Government Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Retail Supplier Rural Electric Cooperative Systems Integrator Tribal Government Utility Program Info State Maryland Program Type Siting and Permitting Provider Interstate Oil and Gas Compact Commission This legislation authorizes the State to join the Interstate Compact for the Conservation of Oil and Gas. The Compact is an agreement that has been entered into by 30 oil- and gas-producing states, as well as eight associate states and 10 international affiliates (including seven Canadian provinces). Members participate in the Interstate Oil and Gas Compact

162

Heat capacity and compactness of denatured proteins  

E-Print Network (OSTI)

One of the striking results of protein thermodynamics is that the heat capacity change upon denaturation is large and positive. This change is generally ascribed to the exposure of non-polar groups to water on denaturation, in analogy to the large heat capacity change for the transfer of small non-polar molecules from hydrocarbons to water. Calculations of the heat capacity based on the exposed surface area of the completely unfolded denatured state give good agreement with experimental data. This result is difficult to reconcile with evidence that the heat denatured state in the absence of denaturants is reasonably compact. In this work, sample conformations for the denatured state of truncated CI2 are obtained by use of an effective energy function for proteins in solution. The energy function gives denatured conformations that are compact with radii of gyration that are slightly larger than that of the native state. The model is used to estimate the heat capacity, as well as that of the native state, at 300 and 350 K via finite enthalpy differences. The calculations show that the heat capacity of denaturation can have large positive contributions from non-covalent intraprotein interactions because these interactions change more with temperature in non-native conformations than in the native state. Including this contribution, which has been neglected in empirical surface area models, leads to heat capacities of unfolding for compact denatured states that are consistent with the experimental heat capacity data. Estimates of the stability curve of CI2 made with the effective energy function support the present model. # 1999 Elsevier Science B.V. All rights reserved.

Themis Lazaridis; Martin Karplus

1999-01-01T23:59:59.000Z

163

CYANATE ION IN COMPACT AMORPHOUS WATER ICE  

SciTech Connect

The 4.62 {mu}m infrared (2164.5 cm{sup -1}) absorption band, observed in ice mantels toward many young stellar objects, has been mostly attributed to the {nu}{sub 3} (CN stretch) band of OCN{sup -} ions. We present in this work a spectroscopic study of OCN{sup -} ions embedded in compact amorphous ice in a range of concentrations and temperatures relevant to astronomical observations together with quantum mechanical calculations of the {nu}{sub 3} band of OCN{sup -} in various H{sub 2}O environments. The ice samples containing the ions are prepared through hyperquenching of liquid droplets of K{sup +}OCN{sup -} solutions on a substrate at 14 K. The {nu}{sub 3} OCN{sup -} band appears as a broad feature peaking at 4.64 {mu}m with a secondary maximum at 4.54 {mu}m and is much weaker than the corresponding peak in the liquid solution or in the solid salt. A similar weakening is observed for other OCN{sup -} absorption peaks at 7.66 {mu}m (2{nu}{sub 2}) and 8.20 {mu}m ({nu}{sub 1}). The theoretical calculations for the {nu}{sub 3} vibration lead to a range of frequencies spanning the experimentally observed width. This frequency spread could help explain the pronounced drop in the band intensity in the ice. The OCN{sup -} {nu}{sub 3} band in the present compact ices is also broader and much weaker than that reported in the literature for OCN{sup -} ions obtained by variously processing porous ice samples containing suitable neutral precursors. The results of this study indicate that the astronomical detection of OCN{sup -} in ice mantels could be significantly impaired if the ion is embedded in a compact water network.

Mate, Belen; Herrero, Victor J.; Rodriguez-Lazcano, Yamilet; Moreno, Miguel A.; Escribano, Rafael [Instituto de Estructura de la Materia, IEM-CSIC, Serrano 121, E-28006 Madrid (Spain); Fernandez-Torre, Delia [Departamento de Fisica Teorica de la Materia Condensada, Universidad Autonoma de Madrid, E-28050 Madrid (Spain); Gomez, Pedro C. [Departamento de Quimica Fisica I, Universidad Complutense, Unidad Asociada UCM-CSIC, E-28040 Madrid (Spain)

2012-11-10T23:59:59.000Z

164

Survivability of Electronic Compact Fluorescent Lamps  

Science Conference Proceedings (OSTI)

This EPRI Technical Report addresses the fastest growing energy efficient light source8212the electronic compact fluorescent lamp (CFL). Because some of the failure modes for screw-in CFLs are different than those for plug-in CFLs, a cursory review of the difference between the two types of CFLs is provided in the first part of Chapter 2. A broad definition of shortened-life CFLs is also provided in Chapter 2 with an emphasis on revisiting mortality curves, the 10-minute lamp start, other relevant defini...

2008-03-31T23:59:59.000Z

165

Proposal to produce large compact toroids  

SciTech Connect

Relatively large, hot compact toroids might be produced in the annular space between two concentric one-turn coils. With currents in the two coils flowing in the same direction, the magnetic fields on each side of the plasma are in opposite directions. As the fields are raised, the plasma ring is heated and compressed radially towards the center of the annular space. By the addition of two sets of auxiliary coils, the plasma ring can be ejected out one end of the two-coil system into a long axial magnetic field.

Phillips, J.A.

1981-03-01T23:59:59.000Z

166

Compact proton spectrometers for measurements of shock  

Science Conference Proceedings (OSTI)

The compact Wedge Range Filter (WRF) proton spectrometer was developed for OMEGA and transferred to the National Ignition Facility (NIF) as a National Ignition Campaign (NIC) diagnostic. The WRF measures the spectrum of protons from D-{sup 3}He reactions in tuning-campaign implosions containing D and {sup 3}He gas; in this work we report on the first proton spectroscopy measurement on the NIF using WRFs. The energy downshift of the 14.7-MeV proton is directly related to the total {rho}R through the plasma stopping power. Additionally, the shock proton yield is measured, which is a metric of the final merged shock strength.

Mackinnon, A; Zylstra, A; Frenje, J A; Seguin, F H; Rosenberg, M J; Rinderknecht, H G; Johnson, M G; Casey, D T; Sinenian, N; Manuel, M; Waugh, C J; Sio, H W; Li, C K; Petrasso, R D; Friedrich, S; Knittel, K; Bionta, R; McKernan, M; Callahan, D; Collins, G; Dewald, E; Doeppner, T; Edwards, M J; Glenzer, S H; Hicks, D; Landen, O L; London, R; Meezan, N B

2012-05-02T23:59:59.000Z

167

Results of Compact Stellarator Engineering Trade Studies  

SciTech Connect

number of technical requirements and performance criteria can drive stellarator costs, e.g., tight tolerances, accurate coil positioning, low aspect ratio (compactness), choice of assembly strategy, metrology, and complexity of the stellarator coil geometry. With the completion of a seven-year design and construction effort of the National Compact Stellarator Experiment (NCSX) it is useful to interject the NCSX experience along with the collective experiences of the NCSX stellarator community to improving the stellarator configuration. Can improvements in maintenance be achieved by altering the stellarator magnet configuration with changes in the coil shape or with the combination of trim coils? Can a mechanical configuration be identified that incorporates a partial set of shaped fixed stellarator coils along with some removable coil set to enhance the overall machine maintenance? Are there other approaches that will simplify the concepts, improve access for maintenance, reduce overall cost and improve the reliability of a stellarator based power plant? Using ARIES-CS and NCSX as reference cases, alternative approaches have been studied and developed to show how these modifications would favorably impact the stellarator power plant and experimental projects. The current status of the alternate stellarator configurations being developed will be described and a comparison made to the recently designed and partially built NCSX device and the ARIES-CS reactor design study.

Tom Brown, L. Bromberg, M. Cole

2009-05-27T23:59:59.000Z

168

Thermodynamics of magnetized binary compact objects  

Science Conference Proceedings (OSTI)

Binary systems of compact objects with electromagnetic field are modeled by helically symmetric Einstein-Maxwell spacetimes with charged and magnetized perfect fluids. Previously derived thermodynamic laws for helically symmetric perfect-fluid spacetimes are extended to include the electromagnetic fields, and electric currents and charges; the first law is written as a relation between the change in the asymptotic Noether charge {delta}Q and the changes in the area and electric charge of black holes, and in the vorticity, baryon rest mass, entropy, charge and magnetic flux of the magnetized fluid. Using the conservation laws of the circulation of magnetized flow found by Bekenstein and Oron for the ideal magnetohydrodynamic fluid, and also for the flow with zero conducting current, we show that, for nearby equilibria that conserve the quantities mentioned above, the relation {delta}Q=0 is satisfied. We also discuss a formulation for computing numerical solutions of magnetized binary compact objects in equilibrium with emphasis on a first integral of the ideal magnetohydrodynamic-Euler equation.

Uryu, Koji [Department of Physics, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213 (Japan); Gourgoulhon, Eric [Laboratoire Univers et Theories, UMR 8102 du CNRS, Observatoire de Paris, Universite Paris Diderot, F-92190 Meudon (France); Markakis, Charalampos [Department of Physics, University of Wisconsin-Milwaukee, Post Office Box 413, Milwaukee, Wisconsin 53201 (United States)

2010-11-15T23:59:59.000Z

169

The Evolution of Galaxies in Compact Groups  

E-Print Network (OSTI)

We present the analysis of the spectra of 62 galaxies in 15 compact groups. The galaxies were classified in four activity classes: galaxies without emission, starburst nucleus galaxies (SBNGs), luminous AGNs and low-luminosity AGNs (LLAGNs). The star formation in the HCG starbursts is more intense than in normal spirals, but comparable to those in the field SBNGs. Their mean gas metallicity is solar and they do not follow the metallicity-luminosity relation traced by the early-type SBNGs in the field, suggesting that most of them are late-type SBNGs. This morphology preference coupled to the observation that the HCG starbursts are predominantly in the halo of the groups is consistent with the idea that compact groups are embedded in sparser structures. The stellar metallicities of the non starburst galaxies are relatively high for their luminosities. In these galaxies the equivalent widths of the metal absorption lines are slightly narrower than normal while the Balmer absorption lines are relatively strong. All these galaxies could be ``post-starburst'' at an advanced stage of evolution. Our observations are supporting a scenario where the core of the groups are slowly collapsing evolved systems embedded in more extended structures (Ribeiro et al. 1998). In the core of the groups, the interactions were more frequent and the galaxies evolved at a more rapid rate than in their halos.

Roger Coziol; Reinaldo R. de Carvalho; Hugo V. Capelato; Andre L. B. Ribeiro

1998-05-30T23:59:59.000Z

170

Sabine River Compact (Multiple States) | Department of Energy  

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

Sabine River Compact (Multiple States) Sabine River Compact (Multiple States) Sabine River Compact (Multiple States) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Water Buying & Making Electricity Home Weatherization Program Info State Texas Program Type Siting and Permitting Provider Sabine River Compact Commission The Sabine River Compact Commission administers the Sabine River Compact to ensure that Texas receives its equitable share of quality water from the

171

Northwest Interstate Compact on Low-Level Radioactive Waste Management  

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

Northwest Interstate Compact on Low-Level Radioactive Waste Northwest Interstate Compact on Low-Level Radioactive Waste Management (Multiple States) Northwest Interstate Compact on Low-Level Radioactive Waste Management (Multiple States) < Back Eligibility Utility Fed. Government Commercial Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Rural Electric Cooperative Tribal Government Institutional Nonprofit Program Info Start Date 1981 State Alaska Program Type Siting and Permitting Provider Northwest Interstate Compact The Northwest Interstate Compact on Low-Level Radioactive Waste Management, enacted in 1981, was ratified by Congress in 1985. The Compact is a cooperative effort of the party states to protect their citizens, and maintain and enhance economic viability, while sharing the responsibilities

172

Atlantic Interstate Low-Level Radioactive Waste Management Compact (South  

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

Atlantic Interstate Low-Level Radioactive Waste Management Compact Atlantic Interstate Low-Level Radioactive Waste Management Compact (South Carolina) Atlantic Interstate Low-Level Radioactive Waste Management Compact (South Carolina) < Back Eligibility Utility Commercial Agricultural Investor-Owned Utility Industrial Construction Municipal/Public Utility Local Government Installer/Contractor Rural Electric Cooperative Tribal Government Program Info Start Date 1986 State South Carolina Program Type Environmental Regulations Siting and Permitting Provider Atlantic Compact Commission The Atlantic (Northeast) Interstate Low-Level Radioactive Waste Management Compact is a cooperative effort to plan, regulate, and administer the disposal of low-level radioactive waste in the region. The states of Connecticut, New Jersey, and South Carolina are party to this compact

173

Modeling Metal Powder Compaction Using Combined Finite and ...  

Science Conference Proceedings (OSTI)

Presentation Title, Modeling Metal Powder Compaction Using Combined Finite ... Optimization of Thermal Cycle for Rails with Respect to the Wear Resistance.

174

Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) |  

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

Western Interstate Nuclear Compact State Nuclear Policy (Multiple Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) Western Interstate Nuclear Compact State Nuclear Policy (Multiple States) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor Industrial Institutional Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Arizona Program Type Siting and Permitting Provider Western Interstate Energy Board Legislation authorizes states' entrance into the Western Interstate Nuclear Compact, which aims to undertake the cooperation of participating states in

175

Appalachian States Low-Level Radioactive Waste Compact (Maryland)  

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

This legislation authorizes Maryland's entrance into the Appalachian States Low-Level Radioactive Waste Compact, which seeks to promote interstate cooperation for the proper management and disposal...

176

PF Coil System Comparisons for a Compact Ignition Device  

Science Conference Proceedings (OSTI)

The Compact Ignition Tokamak Program / Proceedings of the Seveth Topical Meeting on the Technology of Fusion Energy (Reno, Nevada, June 1519, 1986)

R.D. Pillsbury; Jr.; J.H. Schultz; R.J. Thome

177

Nanograting-based compact vacuum ultraviolet spectrometer and ...  

Nanograting-based compact vacuum ultraviolet spectrometer and beam pro?ler for in situ characterization of high-order harmonic generation light sources

178

NIST Shows How to Make a Compact Frequency Comb in ...  

Science Conference Proceedings (OSTI)

NIST Shows How to Make a Compact Frequency Comb in Minutes Video Transcript. ... These resonators actually have a pretty wide range of uses. ...

2013-07-11T23:59:59.000Z

179

Interstate Oil and Gas Conservation Compact (Montana) | Department...  

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

Montana) Interstate Oil and Gas Conservation Compact (Montana) Eligibility Utility Commercial Investor-Owned Utility Industrial Construction MunicipalPublic Utility Rural Electric...

180

The ALCAN Compact Degasser: A through-Based Aluminum ...  

Science Conference Proceedings (OSTI)

Sep 1, 1996 ... The ALCAN Compact Degasser: A through-Based Aluminum Treatment Process. Part I: Metallurgical Principles and Performance by P. Waite...

Note: This page contains sample records for the topic "fluor escent compact" 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

Effect of Powder Compact Holding Time on the Microstructure and ...  

Science Conference Proceedings (OSTI)

The microstructure and mechanical properties of Ti-6Al-4V alloy and the effects of powder compact holding time on them were investigated. The results showed...

182

Dense Deposition of Nanocomposites by a Compact YAG Laser  

Science Conference Proceedings (OSTI)

Feb 1, 2002 ... Dense Deposition of Nanocomposites by a Compact YAG Laser by M. Senna and K. Hamada. Publisher: TMS. Product Format: PDF. Pages...

183

An Innovative Compact Heat Exchanger Solution for Aluminium Off ...  

Science Conference Proceedings (OSTI)

Presentation Title, An Innovative Compact Heat Exchanger Solution for Aluminium Off-Gas Cooling and Heat Recovery. Author(s), El Hani Bouhabila, Erling...

184

Compact reversed-field pinch reactors (CRFPR)  

Science Conference Proceedings (OSTI)

The unique confinement properties of the Reversed-Field Pinch (RFP) are exploited to examine physics and technical issues related to a compact, high-power-density fusion reactor. This resistive-coil, steady-state, toroidal device would use a dual-media power cycle driven by a fusion power core (FPC, i.e., plasma chamber, first wall, blanket, shield, and coils) with a power density and mass approaching values characteristic of pressurized-water fission rectors. A 1000-MWe(net) base case is selected from a comprehensive trade-off study to examine technological issues related to operating a high-power-density FPC. After describing the main physics and technology issues for this base-case reactor, directions for future study are suggested.

Krakowski, R.A.; Miller, R.L.; Bathke, C.G.; Hagenson, R.L.; Copenhaver, C.; Werley, K.A.

1986-01-01T23:59:59.000Z

185

Compact microwave ion source for industrial applications  

SciTech Connect

A 2.45 GHz microwave ion source for ion implanters has many good properties for industrial application, such as easy maintenance and long lifetime, and it should be compact for budget and space. But, it has a dc current supply for the solenoid and a rf generator for plasma generation. Usually, they are located on high voltage platform because they are electrically connected with beam extraction power supply. Using permanent magnet solenoid and multi-layer dc break, high voltage deck and high voltage isolation transformer can be eliminated, and the dose rate on targets can be controlled by pulse duty control with semiconductor high voltage switch. Because the beam optics does not change, beam transfer components, such as focusing elements and beam shutter, can be eliminated. It has shown the good performances in budget and space for industrial applications of ion beams.

Cho, Yong-Sub; Kim, Dae-Il; Kim, Han-Sung; Seol, Kyung-Tae; Kwon, Hyeok-Jung; Hong, In-Seok [Proton Engineering Frontier Project, Korea Atomic Energy Research Institute, Daejeon 305-353 (Korea, Republic of)

2012-02-15T23:59:59.000Z

186

Compact models with regular charge distributions  

E-Print Network (OSTI)

We model a compact relativistic body with anisotropic pressures in the presence of an electric field. The equation of state is barotropic with a linear relationship between the radial pressure and the energy density. Simple exact models of the Einstein-Maxwell equations are generated. A graphical analysis indicates that the matter and electromagnetic variables are well behaved. In particular the proper charge density is regular for certain parameter values at the stellar centre unlike earlier anisotropic models in the presence of charge. We show that the electric field affects the mass of stellar objects and the observed mass for a particular binary pulsar is regained. Our models contain previous results of anisotropic charged matter with a linear equation of state for special parameter values.

P. Mafa Takisa; S. D. Maharaj

2013-10-01T23:59:59.000Z

187

Compact shell solitons in K field theories  

Science Conference Proceedings (OSTI)

Some models providing shell-shaped static solutions with compact support (compactons) in 3+1 and 4+1 dimensions are introduced, and the corresponding exact solutions are calculated analytically. These solutions turn out to be topological solitons and may be classified as maps S{sup 3}{yields}S{sup 3} and suspended Hopf maps, respectively. The Lagrangian of these models is given by a scalar field with a nonstandard kinetic term (K field) coupled to a pure Skyrme term restricted to S{sup 2}, rised to the appropriate power to avoid the Derrick scaling argument. Further, the existence of infinitely many exact shell solitons is explained using the generalized integrability approach. Finally, similar models allowing for nontopological compactons of the ball type in 3+1 dimensions are briefly discussed.

Adam, C.; Klimas, P.; Sanchez-Guillen, J. [Departamento de Fisica de Particulas, Universidad de Santiago and Instituto Galego de Fisica de Altas Enerxias (IGFAE), E-15782 Santiago de Compostela (Spain); Wereszczynski, A. [Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, DK-2100 Copenhagen O, Denmark and Institute of Physics, Jagiellonian University, Reymonta 4, Krakow, 30-059 (Poland)

2009-10-15T23:59:59.000Z

188

A compact multichannel spectrometer for Thomson scattering  

Science Conference Proceedings (OSTI)

The availability of high-efficiency volume phase holographic (VPH) gratings and intensified CCD (ICCD) cameras have motivated a simplified, compact spectrometer for Thomson scattering detection. Measurements of T{sub e} 100 eV by a 2072 l/mm VPH grating. The spectrometer uses a fast-gated ({approx}2 ns) ICCD camera for detection. A Gen III image intensifier provides {approx}45% quantum efficiency in the visible region. The total read noise of the image is reduced by on-chip binning of the CCD to match the 8 spatial channels and the 10 spectral bins on the camera. Three spectrometers provide a minimum of 12 spatial channels and 12 channels for background subtraction.

Schoenbeck, N. L.; Schlossberg, D. J.; Dowd, A. S.; Fonck, R. J.; Winz, G. R. [Department of Engineering Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

2012-10-15T23:59:59.000Z

189

Stirling Air Conditioner for Compact Cooling  

Science Conference Proceedings (OSTI)

BEETIT Project: Infinia is developing a compact air conditioner that uses an unconventional high efficient Stirling cycle system (vs. conventional vapor compression systems) to produce cool air that is energy efficient and does not rely on polluting refrigerants. The Stirling cycle system is a type of air conditioning system that uses a motor with a piston to remove heat to the outside atmosphere using a gas refrigerant. To date, Stirling systems have been expensive and have not had the right kind of heat exchanger to help cool air efficiently. Infinia is using chip cooling technology from the computer industry to make improvements to the heat exchanger and improve system performance. Infinias air conditioner uses helium gas as refrigerant, an environmentally benign gas that does not react with other chemicals and does not burn. Infinias improvements to the Stirling cycle system will enable the cost-effective mass production of high-efficiency air conditioners that use no polluting refrigerants.

None

2010-09-01T23:59:59.000Z

190

Compact hydrogen/helium isotope mass spectrometer  

DOE Patents (OSTI)

The compact hydrogen and helium isotope mass spectrometer of the present invention combines low mass-resolution ion mass spectrometry and beam-foil interaction technology to unambiguously detect and quantify deuterium (D), tritium (T), hydrogen molecule (H.sub.2, HD, D.sub.2, HT, DT, and T.sub.2), .sup.3 He, and .sup.4 He concentrations and concentration variations. The spectrometer provides real-time, high sensitivity, and high accuracy measurements. Currently, no fieldable D or molecular speciation detectors exist. Furthermore, the present spectrometer has a significant advantage over traditional T detectors: no confusion of the measurements by other beta-emitters, and complete separation of atomic and molecular species of equivalent atomic mass (e.g., HD and .sup.3 He).

Funsten, Herbert O. (Los Alamos, NM); McComas, David J. (Los Alamos, NM); Scime, Earl E. (Morgantown, WV)

1996-01-01T23:59:59.000Z

191

Compact imaging spectrometer utilizing immersed gratings  

DOE Patents (OSTI)

A compact imaging spectrometer with an immersive diffraction grating that compensates optical distortions. The imaging spectrometer comprises an entrance slit for transmitting light, means for receiving the light and directing the light, an immersion grating, and a detector array. The entrance slit, the means for receiving the light, the immersion grating, and the detector array are positioned wherein the entrance slit transmits light to the means for receiving the light and the means for receiving the light directs the light to the immersion grating and the immersion grating receives the light and directs the light to the means for receiving the light, and the means for receiving the light directs the light to the detector array.

Chrisp, Michael P. (Danville, CA); Lerner, Scott A. (Corvallis, OR); Kuzmenko, Paul J. (Livermore, CA); Bennett, Charles L. (Livermore, CA)

2007-07-03T23:59:59.000Z

192

Compact and highly efficient laser pump cavity  

SciTech Connect

A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.

Chang, Jim J. (Dublin, CA); Bass, Isaac L. (Castro Valley, CA); Zapata, Luis E. (Livermore, CA)

1999-01-01T23:59:59.000Z

193

Compact and highly efficient laser pump cavity  

SciTech Connect

A new, compact, side-pumped laser pump cavity design which uses non-conventional optics for injection of laser-diode light into a laser pump chamber includes a plurality of elongated light concentration channels. In one embodiment, the light concentration channels are compound parabolic concentrators (CPC) which have very small exit apertures so that light will not escape from the pumping chamber and will be multiply reflected through the laser rod. This new design effectively traps the pump radiation inside the pump chamber that encloses the laser rod. It enables more uniform laser pumping and highly effective recycle of pump radiation, leading to significantly improved laser performance. This new design also effectively widens the acceptable radiation wavelength of the diodes, resulting in a more reliable laser performance with lower cost.

Chang, J.J.; Bass, I.L.; Zapata, L.E.

1999-11-02T23:59:59.000Z

194

Long-Term Performance of Screwbase Compact Fluorescent Lamps  

Science Conference Proceedings (OSTI)

The packaging material for compact fluorescent lamps normally includes some claim regarding expected lamp lifetime. This claimed lifetime is generally not obtained through rigorous testing. This study shows how different operating cycles, components, and lamp and ballast designs affect screwbase compact fluorescent lamp (SCFL) life.

2000-04-11T23:59:59.000Z

195

PREPARATION OF COMPACTS MADE FROM URANIUM AND BERYLLIUM BY SINTERING  

DOE Patents (OSTI)

A powder metallurgical method for making high-density compacts of uranium and beryllium is reported. Powdered UBe/sub 9/ and powdered Be are blended, compacted, and then sintered by rapidly heating to a temperature of approximately 1220 to 1280 deg C in an inert atmosphere.

Angier, R.P.

1961-04-11T23:59:59.000Z

196

compactness in transport theory Mustapha Mokhtar-Kharroubi  

E-Print Network (OSTI)

A main feature of spectra of transport operators in nuclear reactor theory relies on the compactness (orOn L1 compactness in transport theory Mustapha Mokhtar-Kharroubi Département de Mathématiques spectral theory of neutron transport equations on both n-dimensional torus and spatial domains with ...nite

Paris-Sud XI, Université de

197

Southwestern Low-Level Radioactive Waste Disposal Compact (South Dakota) |  

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

Southwestern Low-Level Radioactive Waste Disposal Compact (South Southwestern Low-Level Radioactive Waste Disposal Compact (South Dakota) Southwestern Low-Level Radioactive Waste Disposal Compact (South Dakota) < Back Eligibility Utility Investor-Owned Utility Industrial Construction Municipal/Public Utility Rural Electric Cooperative Fuel Distributor Program Info State South Dakota Program Type Siting and Permitting Provider Southwestern Low-Level Radioactive Waste Commission This legislation authorizes the state's entrance into the Southwestern Low-Level Radioactive Waste Disposal Compact, which provides for the cooperative management of low-level radioactive waste. The Compact is administered by a commission, which can regulate and impose fees on in-state radioactive waste generators. The states of Arizona, California,

198

Interstate Oil and Gas Conservation Compact (Multiple States) | Department  

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

Interstate Oil and Gas Conservation Compact (Multiple States) Interstate Oil and Gas Conservation Compact (Multiple States) Interstate Oil and Gas Conservation Compact (Multiple States) < Back Eligibility Commercial Developer Industrial Investor-Owned Utility Municipal/Public Utility Utility Program Info State Alabama Program Type Environmental Regulations Provider Interstate Oil and Gas Compact Commission The Interstate Oil and Gas Compact Commission assists member states efficiently maximize oil and natural gas resources through sound regulatory practices while protecting the nation's health, safety and the environment. The Commission serves as the collective voice of member governors on oil and gas issues and advocates states' rights to govern petroleum resources within their borders. The Commission formed the Geological CO2 Sequestration Task Force, which

199

QUARK MATTER IN MASSIVE COMPACT STARS  

SciTech Connect

The recent observation of the pulsar PSR J1614-2230 with a mass of 1.97 {+-} 0.04 M{sub sun} gives a strong constraint on the quark and nuclear matter equations of state (EoS). We explore the parameter ranges for a parameterized EoS for quark stars. We find that strange stars, made of absolutely stable strange quark matter, comply with the new constraint only if effects from the strong coupling constant and color-superconductivity are taken into account. Hybrid stars, compact stars with a quark matter core and a hadronic outer layer, can be as massive as 2 M{sub sun}, but only for a significantly limited range of parameters. We demonstrate that the appearance of quark matter in massive stars crucially depends on the stiffness of the nuclear matter EoS. We show that the masses of hybrid stars stay below the ones of hadronic and pure quark stars, due to the softening of the EoS at the quark-hadron phase transition.

Weissenborn, Simon; Pagliara, Giuseppe; Schaffner-Bielich, Juergen [Institute for Theoretical Physics, Ruprecht-Karls University, 69120 Heidelberg (Germany); Sagert, Irina [Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States); Hempel, Matthias [Department of Physics, University of Basel, 4056 Basel (Switzerland)

2011-10-10T23:59:59.000Z

200

Difficulties for Compact Composite Object Dark Matter  

E-Print Network (OSTI)

It has been suggested ``that DM particles are strongly interacting composite macroscopically large objects ... made of well known light quarks (or ... antiquarks)." In doing so it is argued that these compact composite objects (CCOs) are ``natural explanations of many observed data, such as [the] 511 keV line from the bulge of our galaxy" observed by INTEGRAL and the excess of diffuse gamma-rays in the 1-20 MeV band observed by COMPTEL. Here we argue that the atmospheres of positrons that surround CCOs composed of di-antiquark pairs in the favoured Colour-Flavour-Locked superconducting state are sufficiently dense as to stringently limit the penetration of interstellar electrons incident upon them, resulting in an extreme suppression of previously estimated rates of positronium, and hence the flux of 511 keV photons resulting from their decays, and also in the rate of direct electron-positron annihilations, which yield the MeV photons proposed to explain the 1-20 MeV excess. We also demonstrate that even if a fraction of positrons somehow penetrated to the surface of the CCOs, the extremely strong electric fields generated from the bulk antiquark matter would result in the destruction of positronium atoms long before they decay.

Daniel T. Cumberbatch; Glenn D. Starkman; Joseph Silk

2006-06-18T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Absolute Spectrophotometry of Northern Compact Planetary Nebulae  

E-Print Network (OSTI)

We present medium-dispersion spectra and narrowband images of six northern compact planetary nebulae (PNe): BoBn 1, DdDm 1, IC 5117, M 1-5, M 1-71, and NGC 6833. From broad-slit spectra, total absolute fluxes and equivalent widths were measured for all observable emission lines. High signal-to noise emission line fluxes of H-alpha, H-beta, [OIII], [NII], and HeI may serve as emission line flux standards for northern hemisphere observers. From narrow-slit spectra, we derive systemic radial velocities. For four PNe, available emission line fluxes were measured with sufficient signal-to-noise to probe the physical properties of their electron densities, temperatures, and chemical abundances. BoBn 1 and DdDm 1, both type IV PNe, have an H-beta flux over three sigma away from previous measurements. We report the first abundance measurements of M 1-71. NGC 6833 measured radial velocity and galactic coordinates suggest that it is associated with the outer arm or possibly the galactic halo, and its low abundance ([O/H]=1.3x10E-4) may be indicative of low metallicity within that region.

S. A. Wright; R. L. M. Corradi; M. Perinotto

2005-05-12T23:59:59.000Z

202

Process for forming coal compacts and product thereof  

DOE Patents (OSTI)

A process for forming durable, mechanically strong compacts from coal particulates without use of a binder is disclosed. The process involves applying a compressive stress to a particulate feed comprising substantially water-saturated coal particles while the feed is heated to a final compaction temperature in excess of about 100.degree. C. The water present in the feed remains substantially in the liquid phase throughout the compact forming process. This is achieved by heating and compressing the particulate feed and cooling the formed compact at a pressure sufficient to prevent water present in the feed from boiling. The compacts produced by the process have a moisture content near their water saturation point. As a result, these compacts absorb little water and retain exceptional mechanical strength when immersed in high pressure water. The process can be used to form large, cylindrically-shaped compacts from coal particles (i.e., "coal logs") so that the coal can be transported in a hydraulic coal log pipeline.

Gunnink, Brett (Columbia, MO); Kanunar, Jayanth (Arlington, MA); Liang, Zhuoxiong (San Francisco, CA)

2002-01-01T23:59:59.000Z

203

Southern States Energy Compact (Multiple States) | Department of Energy  

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

Southern States Energy Compact (Multiple States) Southern States Energy Compact (Multiple States) Southern States Energy Compact (Multiple States) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State Alabama Program Type Environmental Regulations Industry Recruitment/Support Provider Southern States Energy Board

204

Iron-carbon compacts and process for making them  

DOE Patents (OSTI)

The present invention includes iron-carbon compacts and a process for making them. The process includes preparing a slurry comprising iron powder, furfuryl alcohol, and a polymerization catalyst for initiating the polymerization of the furfuryl alcohol into a resin, and heating the slurry to convert the alcohol into the resin. The resulting mixture is pressed into a green body and heated to form the iron-carbon compact. The compact can be used as, or machined into, a magnetic flux concentrator for an induction heating apparatus.

Sheinberg, Haskell (Santa Fe, NM)

2000-01-01T23:59:59.000Z

205

Development of a Compact Rotating-Wave Electron Beam Accelerator  

Science Conference Proceedings (OSTI)

We present the successful prototype development results of a novel compact rotating-wave electron beam accelerator (RWA). The RWA uses a single cylindrical cavity holding a transverse-magnetic resonant mode in combination with an axial static magnetic field to accelerate electrons to higher energies. With approximately 80 kilowatts of microwave power fed into a C-band cavity, we have been able to successfully accelerate a 3 keV electron beam to {approx}760 keV. The compact RWA accelerator could be the basis for a new class of compact and affordable 1-10 MeV microwave accelerators for military, medical and industrial applications.

Velazco, Jose E.; Ceperley, Peter H. [Microwave Technologies Incorporated, Fairfax, Virginia 22030 (United States); Departments of Physics and Electrical Engineering, George Mason University, Fairfax, Virginia 22030 (United States)

2003-08-26T23:59:59.000Z

206

METHOD AND APPARATUS FOR MAKING URANIUM-HYDRIDE COMPACTS  

DOE Patents (OSTI)

A method and apparatus are presented for making compacts of pyrophoric hydrides in a continuous operation out of contact with air. It is particularly useful for the preparation of a canned compact of uranium hydride possessing high density and purity. The metallic uranium is enclosed in a container, positioned in a die body evacuated and nvert the uranium to the hydride is admitted and the container sealed. Heat is applied to bring about the formation of the hydride, following which compression is used to form the compact sealed in a container ready for use.

Wellborn, W.; Armstrong, J.R.

1959-03-10T23:59:59.000Z

207

Compact harsh environment energy conversion systems  

E-Print Network (OSTI)

The quest for energy is leading the industry into drilling deeper wells. Typically, a temperature gradient of 1C/150 ft can be expected, with bottom hole temperatures reaching beyond 200C in many areas of the world. Moreover, the increased recovery benefits and cost reductions possible with the use of horizontal and multilateral wells has triggered a need for higher power energy conversion systems in bottom hole assemblies, such as rotary steerable tools and downhole tractors. The concepts developed throughout this work address some of these new needs. This research investigated improvements, novel solutions and considerations that will lead to significant advantages in terms of reliability, extended temperature operation, increased power capability and reduced size and cost of compact harsh environment energy conversion systems. Improvements to both the electromechanical subsystem and the power electronic subsystem are introduced. Air gap viscous losses were shown to a have a significant effect on the optimal design of submersible PM (permanent magnet) machines, and a design procedure to account for this loss component in the design was developed. The application of a dual winding exterior rotor PM machine in a downhole environment enabled a significant increase in the applications torque capability, provided protection against generator winding over voltage, and reduced parts count. Comprehensive switching device qualification, testing, and simulation lead to a simple failure mitigation technique for the operation of the most suitable devices at elevated temperature. A flying capacitor multilevel inverter was then successfully constructed and temperature tested. A novel motor drive concept suited for elevated temperature oil filled environment applications concluded the research.

Ahmed, Shehab

2007-05-01T23:59:59.000Z

208

Covered Product Category: Compact Fluorescent Lamps | Department of Energy  

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

Covered Product Category: Compact Fluorescent Lamps Covered Product Category: Compact Fluorescent Lamps Covered Product Category: Compact Fluorescent Lamps October 7, 2013 - 10:48am Addthis ENERGY STAR Qualified Products Federal Energy Management Program (FEMP) provides acquisition guidance across a variety of product categories, including compact fluorescent lamps (CFLs), which are an ENERGY STAR-qualified product category. Federal laws and executive orders mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law. Most manufacturers display the ENERGY STAR label on complying models. For a model not displaying this label, check the manufacturer's literature to determine if it meets the efficiency requirements outlined by ENERGY STAR.

209

Future 'Comb on a Chip': NIST's Compact Frequency Comb ...  

Science Conference Proceedings (OSTI)

... A full-size frequency comb uses a high-power, ultrafast laser.** By contrast, the new compact version relies on a low-power laser and the cavity's ...

2011-10-25T23:59:59.000Z

210

Yellowstone River Compact (North Dakota) | Department of Energy  

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

Yellowstone River Compact (North Dakota) Yellowstone River Compact (North Dakota) Yellowstone River Compact (North Dakota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Savings Category Water Buying & Making Electricity Program Info State North Dakota Program Type Siting and Permitting The Yellowstone River Compact, agreed to by the States of Montana, North Dakota, and Wyoming, provides for an equitable division and apportionment of the waters of the Yellowstone River, as well as for the conservation,

211

Lighting the Way with Compact Fluorescent Lighting | Department of Energy  

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

Lighting the Way with Compact Fluorescent Lighting Lighting the Way with Compact Fluorescent Lighting Lighting the Way with Compact Fluorescent Lighting April 28, 2009 - 5:00am Addthis John Lippert There is a major push today to get homeowners to adopt compact fluorescent lamp (CFL) light bulbs. They have been on the market for nearly three decades, and many homeowners still do not use them widely. But the tide is definitely turning. Their availability and the percentage of homeowners familiar with the technology and purchasing them for their homes have been steadily rising. The products have improved considerably compared to early products, and their prices have plummeted. The ENERGY STAR® Change a Light, Change the World Campaign has been running now for more than half a dozen years. This campaign is designed to

212

The Compact RCS / Antenna Range at MIT Lincoln Laboratory  

E-Print Network (OSTI)

A new compact range with a state-of-the-art instrumentation system was installed at Lincoln Laboratory and is currently in use. This paper describes the chamber with varied-height absorber, the rolled-edge reflector and ...

Shields, Michael W.

213

Compact high resolution isobar separator for study of exotic...  

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

Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge...

214

Preparation of bulk superhard B-C-N nanocomposite compact  

DOE Patents (OSTI)

Bulk, superhard, B--C--N nanocomposite compacts were prepared by ball milling a mixture of graphite and hexagonal boron nitride, encapsulating the ball-milled mixture at a pressure in a range of from about 15 GPa to about 25 GPa, and sintering the pressurized encapsulated ball-milled mixture at a temperature in a range of from about 1800-2500 K. The product bulk, superhard, nanocomposite compacts were well sintered compacts with nanocrystalline grains of at least one high-pressure phase of B--C--N surrounded by amorphous diamond-like carbon grain boundaries. The bulk compacts had a measured Vicker's hardness in a range of from about 41 GPa to about 68 GPa.

Zhao, Yusheng (Los Alamos, NM); He, Duanwei (Sichuan, CN)

2011-05-10T23:59:59.000Z

215

Lighting the Way with Compact Fluorescent Lighting | Department...  

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

and compact fluorescent lights. And I've already purchased a few of the new light emitting diode (LED) solid-state lighting lights-but that's the topic of a future blog. Stay...

216

Compact Ignition Tokamak Program: issues to be resolved by January  

SciTech Connect

This Compact Ignition Tokamak Program report addresses unresolved issues concerning: concept configuration; design space characterization; facility/device layouts; auxiliary system development; cost; R and D; and alternate sites. (JDB)

Flanagan, C.A.

1985-01-01T23:59:59.000Z

217

Superconductivity with deformed Fermi surfaces and compact stars  

E-Print Network (OSTI)

I discuss the deformed Fermi surface superconductivity (DFS) and some of its alternatives in the context of nucleonic superfluids and two flavor color superconductors that may exist in the densest regions of compact stellar objects.

Armen Sedrakian

2003-12-15T23:59:59.000Z

218

High Energy Gamma Rays from Protons Hitting Compact Objects  

E-Print Network (OSTI)

In a previous paper the spectrum of positrons produced by matter initially at rest falling onto a massive compact object was calculated. In this paper this calculation is generalized to obtain both the spectrum of in-flight positron annihilation and pi0 decay gamma rays produced when protons with a cosmic ray-like spectrum hit the surface. The resulting pi0 decay gamma ray spectrum reflects the high energy proton energy spectrum, and is largely independent of the mass of the compact object. One notable prediction for all compact objects is a dip in the spectrum below 70 MeV. As applied to the 10^6 solar mass massive compact object near to the center of our galaxy, our theory shows promise for explaining the gamma rays coming from the galactic center as observed by both the Compton satellite and HESS ground based array.

J. Barbieri; G. Chapline

2008-06-09T23:59:59.000Z

219

A compact setup to study homogeneous nucleation and condensation  

Science Conference Proceedings (OSTI)

An experiment is presented to study homogeneous nucleation and the subsequent droplet growth at high temperatures and high pressures in a compact setup that does not use moving parts. Nucleation and condensation are induced in an adiabatic

Mattias Karlsson; Ivo Alxneit; Frederik Rtten; Daniel Wuillemin; Hans Rudolf Tschudi

2007-01-01T23:59:59.000Z

220

The Effects of Table Lamp Shade Shape and Compact Fluorescent...  

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

The Effects of Table Lamp Shade Shape and Compact Fluorescent Lamp Burning Position on Visual Comfort Speaker(s): Zaidi Abdullah Date: March 15, 2001 - 12:00pm Location: Bldg. 90...

Note: This page contains sample records for the topic "fluor escent compact" 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

Lighting the Way with Compact Fluorescent Lighting | Department of Energy  

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

Lighting the Way with Compact Fluorescent Lighting Lighting the Way with Compact Fluorescent Lighting Lighting the Way with Compact Fluorescent Lighting April 28, 2009 - 5:00am Addthis John Lippert There is a major push today to get homeowners to adopt compact fluorescent lamp (CFL) light bulbs. They have been on the market for nearly three decades, and many homeowners still do not use them widely. But the tide is definitely turning. Their availability and the percentage of homeowners familiar with the technology and purchasing them for their homes have been steadily rising. The products have improved considerably compared to early products, and their prices have plummeted. The ENERGY STAR® Change a Light, Change the World Campaign has been running now for more than half a dozen years. This campaign is designed to

222

Light Flicker in Compact Fluorescent Lamps Caused by Voltage Fluctuations  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study presents tests performed at the EPRI Power Electronics Applications Center (PEAC) Power Quality Test Facility to characterize the light output of an incandescent lamp and compact fluorescent lamps during voltage fluctuations.

2003-12-31T23:59:59.000Z

223

Belle Fourche River Compact (South Dakota) | Open Energy Information  

Open Energy Info (EERE)

History Share this page on Facebook icon Twitter icon Belle Fourche River Compact (South Dakota) This is the approved revision of this page, as well as being the most...

224

Plasma Frequency Shift Due to a Slowly Rotating Compact Star  

E-Print Network (OSTI)

We investigate the effects of a slowly rotating compact gravitational source on plasma oscillations using the gravitoelectromagnetic approximation to General Relativity. It is shown that there is a shift in the plasma frequency and hence in the refractive index of the plasma due to the gravitomagnetic force. Estimates for the difference in frequency of radially transmitted electromagnetic signals are given for typical compact star candidates. 1

Babur M. Mirza; Hamid Saleem

2005-01-01T23:59:59.000Z

225

New Terms for the Compact Form of Electroweak Chiral Lagrangian  

E-Print Network (OSTI)

The compact form of the electroweak chiral Lagrangian is a reformulation of its original form and is expressed in terms of chiral rotated electroweak gauge fields, which is crucial for relating the information of underlying theories to the coefficients of the low-energy effective Lagrangian. However the compact form obtained in previous works is not complete. In this letter we add several new chiral invariant terms to it and discuss the contributions of these terms to the original electroweak chiral Lagrangian.

Hong-Hao Zhang; Wen-Bin Yan; J. K. Parry; Xue-Song Li

2007-04-09T23:59:59.000Z

226

QUANTUM SUBGROUPS OF THE COMPACT QUANTUM GROUP SU-1(3) JULIEN BICHON AND ROBERT YUNCKEN  

E-Print Network (OSTI)

QUANTUM SUBGROUPS OF THE COMPACT QUANTUM GROUP SU-1(3) JULIEN BICHON AND ROBERT YUNCKEN Abstract. We study the (compact) quantum subgroups of the compact quantum group SU-1(3): we show that any non-classical such quantum subgroup is a twist of a compact subgroup of SU(3) or is isomorphic to a quantum subgroup of U-1

227

QUANTUM SUBGROUPS OF THE COMPACT QUANTUM GROUP SU-1(3) JULIEN BICHON AND ROBERT YUNCKEN  

E-Print Network (OSTI)

QUANTUM SUBGROUPS OF THE COMPACT QUANTUM GROUP SU-1(3) JULIEN BICHON AND ROBERT YUNCKEN Abstract. We study the (compact) quantum subgroups of the compact quantum group SU-1(3): we show that any such non-classical quantum subgroup is a twist of a compact subgroup of SU(3) or is isomorphic to a quantum

Sart, Remi

228

Compact Reversed-Field Pinch Reactors (CRFPR): preliminary engineering considerations  

SciTech Connect

The unique confinement physics of the Reversed-Field Pinch (RFP) projects to a compact, high-power-density fusion reactor that promises a significant reduction in the cost of electricity. The compact reactor also promises a factor-of-two reduction in the fraction of total cost devoted to the reactor plant equipment (i.e., fusion power core (FPC) plus support systems). In addition to operational and developmental benefits, these physically smaller systems can operate economically over a range of total power output. After giving an extended background and rationale for the compact fusion approaches, key FPC subsystems for the Compact RFP Reactor (CRFPR) are developed, designed, and integrated for a minimum-cost, 1000-MWe(net) system. Both the problems and promise of the compact, high-power-density fusion reactor are quantitatively evaluated on the basis of this conceptual design. The material presented in this report both forms a framework for a broader, more expanded conceptual design as well as suggests directions and emphases for related research and development.

Hagenson, R.L.; Krakowski, R.A.; Bathke, C.G.; Miller, R.L.; Embrechts, M.J.; Schnurr, N.M.; Battat, M.E.; LaBauve, R.J.; Davidson, J.W.

1984-08-01T23:59:59.000Z

229

FESAC White Paper Path to Market for Compact Systems July 2012 The Path to Market for Compact Modular Fusion Power Cores1  

E-Print Network (OSTI)

FESAC White Paper Path to Market for Compact Systems July 2012 The Path to Market for Compact of Representatives (2010) #12;FESAC White Paper Path to Market for Compact Systems July 2012 (TRL) of a technology) distributed power generation. These units can be added to existing facilities when and where needed, or phased

230

Cape Light Compact - Residential Energy Efficiency Rebate Program |  

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

Cape Light Compact - Residential Energy Efficiency Rebate Program Cape Light Compact - Residential Energy Efficiency Rebate Program Cape Light Compact - Residential Energy Efficiency Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Heating Home Weatherization Commercial Weatherization Cooling Construction Design & Remodeling Sealing Your Home Ventilation Heat Pumps Windows, Doors, & Skylights Solar Water Heating Maximum Rebate Home Energy Assessment/Weatherization: $2,000 Income Eligible Weatherization Measures: $2,000 - $3,000 Program Info State Massachusetts Program Type Local Rebate Program Rebate Amount Home Energy Assessment/Weatherization: 75% Single Family Energy Star Home: $750 - $8,000 Multi-Family Energy Star Home: $350 - $4,000/unit Income Eligible Weatherization Measures: 100% of cost

231

Cape Light Compact - Commercial, Industrial and Municipal Buildings Energy  

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

Cape Light Compact - Commercial, Industrial and Municipal Buildings Cape Light Compact - Commercial, Industrial and Municipal Buildings Energy Efficiency Rebate Program Cape Light Compact - Commercial, Industrial and Municipal Buildings Energy Efficiency Rebate Program < Back Eligibility Commercial Industrial Local Government Savings Category Heating & Cooling Commercial Heating & Cooling Heating Cooling Manufacturing Other Construction Heat Pumps Appliances & Electronics Commercial Lighting Lighting Commercial Weatherization Water Heating Maximum Rebate Retrofit: 50% of cost of upgraded equipment, or an amount that buys down the cost of the project to a 1.5 year simple payback. New Construction: 70% of incremental cost of higher efficiency equipment, or an amount that buys down the incremental investment to a 1.5 year simple

232

Energy Cost Calculator for Compact Fluorescent Lamps | Department of Energy  

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

Compact Fluorescent Lamps Compact Fluorescent Lamps Energy Cost Calculator for Compact Fluorescent Lamps October 8, 2013 - 2:18pm Addthis This tool calculates the payback period for your calc retrofit project. Modify the default values to suit your project requirements. Existing incandescent lamp wattage Watts Incandescent lamp cost dollars Incandescent lamp life 1000 hours calc wattage Watts calc cost dollars calc life (6000 hours for moderate use, 10000 hours for high use) 8000 hours Number of lamps in retrofit project Hours operating per week hours Average cost of electricity 0.06 $/kWh Relamper labor costs $/hr Time taken to retrofit all lamps in this project min Time taken to relamp one lamp min Type of Relamping Practiced: Group Relamping: Calculate Simple Payback Period months

233

Compact multiwavelength transmitter module for multimode fiber optic ribbon cable  

DOE Patents (OSTI)

A compact multiwavelength transmitter module for multimode fiber optic ribbon cable, which couples light from an M.times.N array of emitters onto N fibers, where the M wavelength may be distributed across two or more vertical-cavity surface-emitting laser (VCSEL) chips, and combining emitters and multiplexer into a compact package that is compatible with placement on a printed circuit board. A key feature is bringing together two emitter arrays fabricated on different substrates--each array designed for a different wavelength--into close physical proximity. Another key feature is to compactly and efficiently combine the light from two or more clusters of optical emitters, each in a different wavelength band, into a fiber ribbon.

Deri, Robert J. (Pleasanton, CA); Pocha, Michael D. (Livermore, CA); Larson, Michael C. (Goleta, CA); Garrett, Henry E. (Livermore, CA)

2002-01-01T23:59:59.000Z

234

Micromechanics of compaction in an analogue reservoir sandstone  

SciTech Connect

Energy production, deformation, and fluid transport in reservoirs are linked closely. Recent field, laboratory, and theoretical studies suggest that, under certain stress conditions, compaction of porous rocks may be accommodated by narrow zones of localized compressive deformation oriented perpendicular to the maximum compressive stress. Triaxial compression experiments were performed on Castlegate, an analogue reservoir sandstone, that included acoustic emission detection and location. Initially, acoustic emissions were focused in horizontal bands that initiated at the sample ends (perpendicular to the maximum compressive stress), but with continued loading progressed axially towards the center. This paper describes microscopy studies that were performed to elucidate the micromechanics of compaction during the experiments. The microscopy revealed that compaction of this weakly-cemented sandstone proceeded in two phases: an initial stage of porosity decrease accomplished by breakage of grain contacts and grain rotation, and a second stage of further reduction accommodated by intense grain breakage and rotation.

DIGIOVANNI,ANTHONY A.; FREDRICH,JOANNE T.; HOLCOMB,DAVID J.; OLSSON,WILLIAM A.

2000-02-28T23:59:59.000Z

235

Compile-Time Compaction Of Traces For Memory Simulation  

E-Print Network (OSTI)

This thesis examines compile-time compaction of program execution traces. It presents a new method for compacting traces for memory simulation. Further, it describes a tool prototype that implements the method. Experiments with the tool prototype show that the new method reduces the time needed in simulating the operation of memories. Memory simulation is needed in the performance analysis and in the design of programs. In high performance applications, the data transfer between different layers of memory is one of the main bottlenecks. A program execution trace is a list of memory references. Using traces as simulation inputs is a flexible way of analyzing the memory perfor...

Vesa Hirvisalo; Vesa Hirvisalo; Dr. Tech Esko Nuutila

1998-01-01T23:59:59.000Z

236

On the string topology category of compact Lie groups.  

E-Print Network (OSTI)

This paper examines the string topology category of a manifold, defined by Blumberg, Cohen and Teleman. Since the string topology category is a subcategory of a compactly generated triangulated category, the machinery of stratification, constructed by Benson, Krause and Iyengar, can be applied in order to gain an understanding of the string topology category. It is shown that an appropriate stratification holds when the manifold in question is a simply connected compact Lie group. This last result is used to derive some properties of the relevant string topology categories.

Shoham Shamir

237

Compact two-beam push-pull free electron laser  

DOE Patents (OSTI)

An ultra-compact free electron laser comprising a pair of opposed superconducting cavities that produce identical electron beams moving in opposite directions such that each set of superconducting cavities accelerates one electron beam and decelerates the other electron beam. Such an arrangement, allows the energy used to accelerate one beam to be recovered and used again to accelerate the second beam, thus, each electron beam is decelerated by a different structure than that which accelerated it so that energy exchange rather than recovery is achieved resulting in a more compact and highly efficient apparatus.

Hutton, Andrew (Yorktown, VA)

2009-03-03T23:59:59.000Z

238

Plasma Frequency Shift Due to a Slowly Rotating Compact Star  

E-Print Network (OSTI)

We investigate the effects of a slowly rotating compact gravitational source on electron oscillations in a homogeneous electrically neutral plasma in the absence of an external electric or magnetic field. Neglecting the random thermal motion of the electrons we assume the gravitoelectromagnetic approximation to the general theory of relativity for the gravitational field. It is shown that there is a shift in the plasma frequency and hence in the dielectric constant of the plasma due to the gravitomagnetic force. We also give estimates for the difference in the frequency of radially transmitted electromagnetic signals for typical compact star candidates.

Babur M. Mirza; Hamid Saleem

2005-01-01T23:59:59.000Z

239

Compaction and mobility in randomly agitated granular assemblies  

E-Print Network (OSTI)

We study the compaction and mobility properties of a dense granular material under weak random vibration. By putting in direct contact millimetric glass beads with piezoelectric transducers we manage to inject energy to the system in a disordered manner with accelerations much smaller than gravity, resulting in a slow compaction dynamics and no convection. We characterize the mobility inside the medium by pulling through it an intruder grain at constant velocity. We present an extensive study of the relation between drag force and velocity for different vibration conditions and sizes of the intruder.

G. Caballero; J. Lanuza; E. Clement

2005-04-25T23:59:59.000Z

240

Compact Einstein-Weyl Manifolds With Large Symmetry Group  

E-Print Network (OSTI)

A geometric classification of the compact four-dimensional Einstein-Weyl manifolds with at least four-dimensional symmetry group is given. Our results also sharpen previous results on four-dimensional Einstein metrics and correct Parker's topological classification of cohomogeneity-one four-manifolds.

Anders Bisbjerg Madsen; Henrik Pedersen; Yat Sun Poon; Andrew Swann

1995-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Identification of transparent, compact, accurate and reliable linguistic fuzzy models  

Science Conference Proceedings (OSTI)

Transparency, accuracy, compactness and reliability all appear to be vital (even though somewhat contradictory) requirements when it comes down to linguistic fuzzy modeling. This paper presents a methodology for simultaneous optimization of these criteria ... Keywords: Complexity reduction, Fuzzy modeling, Interpretability of fuzzy systems

Andri Riid; Ennu Rstern

2011-10-01T23:59:59.000Z

242

Fouling characteristics of compact heat exchangers and enhanced tubes.  

Science Conference Proceedings (OSTI)

Fouling is a complex phenomenon that (1) encompasses formation and transportation of precursors, and (2) attachment and possible removal of foulants. A basic understanding of fouling mechanisms should guide the development of effective mitigation techniques. The literature on fouling in complex flow passages of compact heat exchangers is limited; however, significant progress has been made with enhanced tubes.

Panchal, C. B.; Rabas, T. J.

1999-07-15T23:59:59.000Z

243

Compact anhydrous HCl to aqueous HCl conversion system  

DOE Patents (OSTI)

The present invention is directed to an inexpensive and compact apparatus adapted for use with a .sup.196 Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

Grossman, Mark W. (Belmont, MA); Speer, Richard (S. Hamilton, MA)

1993-01-01T23:59:59.000Z

244

Ultra-compact Marx-type high-voltage generator  

DOE Patents (OSTI)

An ultra-compact Marx-type high-voltage generator includes individual high-performance components that are closely coupled and integrated into an extremely compact assembly. In one embodiment, a repetitively-switched, ultra-compact Marx generator includes low-profile, annular-shaped, high-voltage, ceramic capacitors with contoured edges and coplanar extended electrodes used for primary energy storage; low-profile, low-inductance, high-voltage, pressurized gas switches with compact gas envelopes suitably designed to be integrated with the annular capacitors; feed-forward, high-voltage, ceramic capacitors attached across successive switch-capacitor-switch stages to couple the necessary energy forward to sufficiently overvoltage the spark gap of the next in-line switch; optimally shaped electrodes and insulator surfaces to reduce electric field stresses in the weakest regions where dissimilar materials meet, and to spread the fields more evenly throughout the dielectric materials, allowing them to operate closer to their intrinsic breakdown levels; and uses manufacturing and assembly methods to integrate the capacitors and switches into stages that can be arranged into a low-profile Marx generator.

Goerz, David A. (Brentwood, CA); Wilson, Michael J. (Modesto, CA)

2000-01-01T23:59:59.000Z

245

Gluon Vortices and Induced Magnetic Field in Compact Stars  

E-Print Network (OSTI)

The natural candidates for the realization of color superconductivity are the extremely dense cores of compact stars, many of which have very large magnetic fields, especially the so-called magnetars. In this paper we discuss how a color superconducting core can serve to generate and enhance the stellar magnetic field without appealing to a magnetohydrodynamic dynamo mechanism.

Efrain J. Ferrer

2007-08-12T23:59:59.000Z

246

Gluon Vortices and Induced Magnetic Field in Compact Stars  

SciTech Connect

The natural candidates for the realization of color superconductivity are the extremely dense cores of compact stars, many of which have very large magnetic fields, especially the so called magnetars. In this paper we discuss how a color superconducting core can serve to generate and enhance the stellar magnetic field without appealing to a magnetohydrodynamic dynamo mechanism.

Ferrer, Efrain J. [Department of Physics, Western Illinois University, Macomb, IL 61455 (United States)

2007-10-26T23:59:59.000Z

247

The Hot Working Behaviour of Mar M200 Superalloy Compacts  

Science Conference Proceedings (OSTI)

testing in the range 105O'C to 12OO'C at constant true strain rates between 10m4 s-l and 1 s,-l. The compacts were pressed either below or above the y' solvus.

248

Compact X-ray Light Source Workshop Report  

SciTech Connect

This report, produced jointly by EMSL and FCSD, is the result of a workshop held in September 2011 that examined the utility of a compact x-ray light source (CXLS) in addressing many scientific challenges critical to advancing energy science and technology.

Thevuthasan, Suntharampillai; Evans, James E.; Terminello, Louis J.; Koppenaal, David W.; Manke, Kristin L.; Plata, Charity

2012-12-01T23:59:59.000Z

249

A Compact Wireless Charging System for Electric Vehicles  

Science Conference Proceedings (OSTI)

In this paper, a compact high efficiency wireless power transfer system has been designed and developed. The detailed gate drive design, cooling system design, power stage development, and system assembling are presented. The successful tests verified the feasibility of wireless power transfer system to achieve over-all 90% efficiency.

Ning, Puqi [ORNL; Miller, John M [ORNL; Onar, Omer C [ORNL; White, Cliff P [ORNL

2013-01-01T23:59:59.000Z

250

Compact data format for advertising and discovery in ubiquitous networks  

Science Conference Proceedings (OSTI)

In this paper, we describe a packet data size minimization method designed specifically for advertising and discovery in ubiquitous networks. The minimization is effective for achieving superior discovery performance characteristics such as discovery ... Keywords: compact data format, discovery system, service discovery

Pavel Poupyrev; Yoshihiro Kawahara; Peter Davis; Hiroyuki Morikawa

2007-11-01T23:59:59.000Z

251

Compact anhydrous HCl to aqueous HCl conversion system  

DOE Patents (OSTI)

The present invention is directed to an inexpensive and compact apparatus adapted for use with a [sup 196]Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.

Grossman, M.W.; Speer, R.

1993-06-01T23:59:59.000Z

252

Direct construction of compact context-dependency transducers from data  

Science Conference Proceedings (OSTI)

This paper describes a new method for building compact context-dependency transducers for finite-state transducer-based ASR decoders. Instead of the conventional phonetic decision tree growing followed by FST compilation, this approach incorporates the ... Keywords: LVCSR, WFST

David Rybach, Michael Riley, Chris Alberti

2014-01-01T23:59:59.000Z

253

On-Line Construction of Compact Directed Acyclic Word Graphs  

Science Conference Proceedings (OSTI)

A Compact Directed Acyclic Word Graph (CDAWG) is a space-efficient text indexing structure, that can be used in several different string algorithms, especially in the analysis of biological sequences. In this paper, we present a new on-line algorithm ...

Shunsuke Inenaga; Hiromasa Hoshino; Ayumi Shinohara; Masayuki Takeda; Setsuo Arikawa; Giancarlo Mauri; Giulio Pavesi

2001-07-01T23:59:59.000Z

254

A compact FPGA-based montgomery multiplier over prime fields  

Science Conference Proceedings (OSTI)

This work describes a compact FPGA hardware architecture for computing modular multiplications over GF(p) using the Montgomery method, suitable for public key cryptography for embedded or mobile systems. The multiplier is parameterizable, allowing ... Keywords: coprocessor, finite field arithmetic, fpga, montgomery multiplication, prime fields

Miguel Morales-Sandoval; Arturo Diaz-Perez

2013-05-01T23:59:59.000Z

255

ULTRA-COMPACT ACCELERATOR TECHNOLOGIES FOR APPLICATION IN NUCLEAR TECHNIQUES  

Science Conference Proceedings (OSTI)

We report on compact accelerator technology development for potential use as a pulsed neutron source quantitative post verifier. The technology is derived from our on-going compact accelerator technology development program for radiography under the US Department of Energy and for a clinic sized compact proton therapy systems under an industry sponsored Cooperative Research and Development Agreement. The accelerator technique relies on the synchronous discharge of a prompt pulse generating stacked transmission line structure with the beam transit. The goal of this technology is to achieve {approx}10 MV/m gradients for 10s of nanoseconds pulses and to {approx}100 MV/m gradients for {approx}1 ns systems. As a post verifier for supplementing existing x-ray equipment, this system can remain in a charged, stand-by state with little or no energy consumption. We detail the progress of our overall component development effort with the multilayer dielectric wall insulators (i.e., the accelerator wall), compact power supply technology, kHz repetition-rate surface flashover ion sources, and the prompt pulse generation system consisting of wide-bandgap switches and high performance dielectric materials.

Sampayan, S; Caporaso, G; Chen, Y; Carazo, V; Falabella, S; Guethlein, G; Guse, S; Harris, J R; Hawkins, S; Holmes, C; Krogh, M; Nelson, S; Paul, A C; Pearson, D; Poole, B; Schmidt, R; Sanders, D; Selenes, K; Sitaraman, S; Sullivan, J; Wang, L; Watson, J

2009-06-11T23:59:59.000Z

256

Diffusion of inorganic chemical wastes in compacted clay  

SciTech Connect

The factors that were investigated included the water content/dry unit weight, the method of compaction, the mineralogy of the soil, and the concentration of the ions. The effective diffusion coefficients (D{asterisk}) of three anions (Cl{sup {minus}}, Br{sup {minus}}, and I{sup {minus}}) and three cations (K{sup +}, Cd{sup 2+}, and Zn{sup 2+}) in a simulated waste leachate were measured. Two clay soils (kaolinite and Lufkin clay) and a sand were used in the study. The clay samples were compacted and pre-soaked to minimize hydraulic gradients due to negative pore pressures. Mass balance calculations were performed to indicate possible sinks/sources in the diffusion system. The results of the diffusion tests were analyzed using two analytical solutions to Fick's second law and a commercially available semi-analytical solution. The D{asterisk} values for tests using high-concentration (0.04 N) leachate generally fell in the narrow range of about 4.0 {times} 10{sup {minus}6} to 2.0 {times} 10{sup {minus}5} cm{sup 2}/s, and were relatively insensitive to compaction water content/dry unit weight and to compaction method. The variability in the results from the tests with low-concentration (0.013 N) leachate precluded any definite conclusions from these tests. The values of D{asterisk} measured in this study were compared to values from previous studies, and the D{asterisk} values from this study were found to be slightly conservative (i.e., high). However, the results of the tests may be affected by several chemical and physical factors, and care should be taken to ensure that the soils used in the tests are representative of those used in the application of the test results. Recommendations are made for estimating D{asterisk} values for use in the design of compacted clay barriers for the containment of inorganic chemical wastes.

Shackelford, C.D.

1988-01-01T23:59:59.000Z

257

Ceramographic Examinations of Irradiated AGR-1 Fuel Compacts  

SciTech Connect

The AGR 1 experiment involved irradiating 72 cylindrical fuel compacts containing tri-structural isotropic (TRISO)-coated particles to a peak burnup of 19.5% fissions per initial metal atom with no in-pile failures observed out of almost 300,000 particles. Five irradiated AGR 1 fuel compacts were selected for microscopy that span a range of irradiation conditions (temperature, burnup, and fast fluence). These five compacts also included all four TRISO coating variations irradiated in the AGR experiment. The five compacts were cross-sectioned both transversely and longitudinally, mounted, ground, and polished after development of careful techniques for preserving particle structures against preparation damage. Approximately 40 to 80 particles within each cross section were exposed near enough to mid-plane for optical microscopy of kernel, buffer, and coating behavior. The microstructural analysis focused on kernel swelling and porosity, buffer densification and fracture, debonding between the buffer and inner pyrolytic carbon (IPyC) layers, and fractures in the IPyC and SiC layers. Three basic particle morphologies were established according to the extent of bonding between the buffer and IPyC layers: complete debonding along the interface (Type A), no debonding along the interface (Type B), and partial debonding (Type AB). These basic morphologies were subdivided according to whether the buffer stayed intact or fractured. The resulting six characteristic morphologies were used to classify particles within each cross section, but no spatial patterns were clearly observed in any of the cross-sectional morphology maps. Although positions of particle types appeared random within compacts, examining a total of 830 classified particles allowed other relationships among morphological types to be established.

Paul Demkowicz; Scott Ploger; John Hunn

2012-05-01T23:59:59.000Z

258

Ceramographic Examinations of Irradiated AGR-1 Fuel Compacts  

SciTech Connect

The AGR 1 experiment involved irradiating 72 cylindrical fuel compacts containing tri-structural isotropic (TRISO)-coated particles to a peak burnup of 19.5% fissions per initial metal atom with no in-pile failures observed out of almost 300,000 particles. Six irradiated AGR 1 fuel compacts were selected for microscopy that span a range of irradiation conditions (temperature, burnup, and fast fluence). These six compacts also included all four TRISO coating variations irradiated in the AGR experiment. The six compacts were cross-sectioned both transversely and longitudinally, mounted, ground, and polished after development of careful techniques for preserving particle structures against preparation damage. From 36 to 79 particles within each cross section were exposed near enough to midplane for optical microscopy of kernel, buffer, and coating behavior. The microstructural analysis focused on kernel swelling and porosity, buffer densification and fracture, debonding between the buffer and inner pyrolytic carbon (IPyC) layers, and fractures in the IPyC and SiC layers. Three basic particle morphologies were established according to the extent of bonding between the buffer and IPyC layers: complete debonding along the interface (Type A), no debonding along the interface (Type B), and partial debonding (Type AB). These basic morphologies were subdivided according to whether the buffer stayed intact or fractured. The resulting six characteristic morphologies were used to classify particles within each cross section, but no spatial patterns were clearly observed in any of the cross-sectional morphology maps. Although positions of particle types appeared random within compacts, examining a total of 931 classified particles allowed other relationships among morphological types to be established.

Paul Demkowicz; Scott Ploger; John Hunn; Jay S. Kehn

2012-09-01T23:59:59.000Z

259

Casimir potential of a compact object enclosed by a spherical cavity  

E-Print Network (OSTI)

We study the electromagnetic Casimir interaction of a compact object contained inside a closed cavity of another compact object. We express the interaction energy in terms of the objects scattering matrices and translation ...

Zaheer, Saad

260

Have You Switched to Compact Fluorescent Lights? Why or Why Not...  

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

Switched to Compact Fluorescent Lights? Why or Why Not? Have You Switched to Compact Fluorescent Lights? Why or Why Not? May 1, 2009 - 1:52pm Addthis On Tuesday, John wrote about...

Note: This page contains sample records for the topic "fluor escent compact" 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

A Four Cell Lattice for the UCLA Compact Light Source Synchrotron  

E-Print Network (OSTI)

SCMAG-659 A Four Cell Lattice for the UCLA Compact Lightof California A Four Cell Lattice for the UCLA Compact LightT m-2) SF SO Table 2: Lattice Parameters for the Six Cell

Garren, A.A.

2011-01-01T23:59:59.000Z

262

Heat transfer and condensation of water vapour from humid air in compact heat exchangers.  

E-Print Network (OSTI)

??In this thesis, an experimental and simulation study of heat transfer in water-to-air compact-plate heat exchanger is presented. A compact-plate heat exchanger made of polypropylene, (more)

Saraireh, Mohammad

2012-01-01T23:59:59.000Z

263

Design and Development of Integrated Compact Multiphase Separation System (CMSS)  

SciTech Connect

The petroleum industry has relied in the past mainly on conventional vessel-type separators, which are bulky, heavy and expensive, to process wellhead production of oil-water-gas flow. Economic and operational pressures continue to force the petroleum industry to seek less expensive and more efficient separation alternatives in the form of compact separators. The compact dimensions, smaller footprint and lower weight of compact separators have a potential for cost savings to the industry, especially in offshore and subsea applications. Also, compact separators reduce the inventory of hydrocarbons significantly, which is critical for environmental This report presents a brief overview of the activities and tasks accomplished during the Budget Period II (October 09, 2004-April 30, 2006) of the DOE project titled ''Design and Development of Integrated Compact Multiphase Separation System (CMSS{copyright})''. An executive summary is presented initially followed by the tasks of the current budget period. Then, detailed description of the experimental and modeling investigations are presented. Subsequently, the technical and scientific results of the activities of this project period are presented with discussions. The findings of this investigation are summarized in the ''Conclusions'' section In this investigation, the concept of CMSS{copyright} has been developed and is proven through simulation studies and validated by experimental data. As part of the second phase of the project (Budget Period II--10/09/2004-04/30/2006) experimental investigation of the integrated CMSS{copyright} for different configurations has been conducted in order to evaluate the performance of the individual separation components, and determine how they will affect the performance of each other when integrated in the CMSS{copyright}. An intelligent control system is also developed to improve the total system efficiency of Compact Multiphase Separation System (CMSS{copyright}). In mature oil fields, water handling poses a huge problem. Thus water knock out at the earliest stage helps in significant cost savings during handling, separation and transportation of oil. One of the objectives of the CMSS{copyright} configuration is to knock out free water from the upstream fluids. The results from theoretical and experimental studies show that Free Water Knock Out (FWKO) CMSS{copyright} system can be readily deployed in the field using the control system strategies designed, implemented and tested in this study.

Ram S. Mohan; Ovadia Shoham

2006-04-30T23:59:59.000Z

264

Compact-designed supercapacitors using free-standing single-walled carbon nanotube films  

E-Print Network (OSTI)

Compact-designed supercapacitors using free-standing single-walled carbon nanotube films Zhiqiang0ee00261e We reported the realization of assembling compact-designed supercapacitors using large) were achieved from the prepared SWCNT film-based compact-designed supercapacitors with small equivalent

Wang, Wei Hua

265

Compact and mobile high resolution PET brain imager  

DOE Patents (OSTI)

A brain imager includes a compact ring-like static PET imager mounted in a helmet-like structure. When attached to a patient's head, the helmet-like brain imager maintains the relative head-to-imager geometry fixed through the whole imaging procedure. The brain imaging helmet contains radiation sensors and minimal front-end electronics. A flexible mechanical suspension/harness system supports the weight of the helmet thereby allowing for patient to have limited movements of the head during imaging scans. The compact ring-like PET imager enables very high resolution imaging of neurological brain functions, cancer, and effects of trauma using a rather simple mobile scanner with limited space needs for use and storage.

Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

2011-02-08T23:59:59.000Z

266

NERSC and CRD Help Decipher Science from Compact Accelerator Simulations -  

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

and CRD Help and CRD Help Decipher Science from Compact Accelerator Simulations NERSC and CRD Help Decipher Science from Compact Accelerator Simulations May 26, 2009 3D Particle Surfing : Electrons are moving from left to right in this LOASIS experiment. The blue shells show the plasma wake, while bunches of surfing electrons are shown as green and yellow. Green reveals low-energy particles, and yellow shows high-energy. The simulation was conducted in the VORPAL framework, and visualized with VisIt and VizSchema. Scientists use many different tools to understand the universe. While telescopes offer valuable insights about interactions between stars, planets and galaxies; particle accelerators give researchers a better understanding of the basic particles that make up these structures, as well

267

Compact and mobile high resolution PET brain imager  

Science Conference Proceedings (OSTI)

A brain imager includes a compact ring-like static PET imager mounted in a helmet-like structure. When attached to a patient's head, the helmet-like brain imager maintains the relative head-to-imager geometry fixed through the whole imaging procedure. The brain imaging helmet contains radiation sensors and minimal front-end electronics. A flexible mechanical suspension/harness system supports the weight of the helmet thereby allowing for patient to have limited movements of the head during imaging scans. The compact ring-like PET imager enables very high resolution imaging of neurological brain functions, cancer, and effects of trauma using a rather simple mobile scanner with limited space needs for use and storage.

Majewski, Stanislaw (Yorktown, VA); Proffitt, James (Newport News, VA)

2011-02-08T23:59:59.000Z

268

Compact toroid experiments: spheromaks and field-reversed configurations  

SciTech Connect

Compact toroids (CT) containing both poloidal and toroidal magnetic field spheromaks, are generated in the CTX experiment using a magnetized coaxial plasma gun, and are trapped and stably confined in an oblate flux conserver. Total configuration lifetimes are observed up to approx. 0.8 ms, consistent with classical resistive decay. The field reversed configuration (FRC) is a high beta, axisymmetric, highly prolate compact toroid, containing only poloidal magnetic field, formed in a field-reversed theta pinch. A quiescent confinement period of 30 to 90 ..mu..s with T/sub i/ approx. 200 to 500 eV and n approx. 5 x 10/sup 15/ cm/sup -3/ is terminated by an n = 2 rotational instability. The FRC is stable to MHD modes including the tilting instability.

Quinn, W.E.

1982-01-01T23:59:59.000Z

269

Solar System Signatures of Impacts by Compact Ultra Dense Objects  

E-Print Network (OSTI)

As a means of detecting compact ultra dense objects (CUDOs) with nuclear density or greater, and a mass $10^{-10}solar system bodies. We find that a heavy enough CUDO pulverizes, heats and entrains material in a small cylinder around its trajectory through the target body. Because the resulting impact features endure for geologic timescales, data is accumulated over the history of the solar system. Exclusion of all CUDO impact signatures would set a strong limit on their local abundance.

Labun, Lance; Rafelski, Johann

2011-01-01T23:59:59.000Z

270

Compact nuclear power systems based on particle bed reactors  

SciTech Connect

Compact, low cost nuclear power systems with an extremely low radioactive inventory are described. These systems use the Particle Bed Reactor (PBR), in which HTGR particle fuel is contained in packed beds that are changed daily. The small diameter particle fuel (500 ..mu..m) is directly cooled utilizing the large heat transfer area available (7.8 m/sup 2//liter), thus allowing high bed power densities (MW/liter).

Horn, F.L.; Powell, J.R.; Steinberg, M.; Takahashi, H.

1986-01-01T23:59:59.000Z

271

Compact-range coordinate system established using a laser tracker.  

DOE Green Energy (OSTI)

Establishing a Cartesian coordinate reference system for an existing Compact Antenna Range using the parabolic reflector is presented. A SMX (Spatial Metrix Corporation) M/N 4000 laser-based coordinate measuring system established absolute coordinates for the facility. Electric field characteristics with positional movement correction are evaluated. Feed Horn relocation for alignment with the reflector axis is also described. Reference points are established for follow-on non-laser alignments utilizing a theodolite.

Gallegos, Floyd H.; Bryce, Edwin Anthony

2006-12-01T23:59:59.000Z

272

Modeling of reservoir compaction and surface subsidence at South Belridge  

SciTech Connect

Finite-element models of depletion-induced reservoir compaction and surface subsidence have been calibrated with observed subsidence, locations of surface fissures, and regions of subsurface casing damage at South Belridge and used predictively for the evaluation of alternative reservoir-development plans. Pressure maintenance through diatomite waterflooding appears to be a beneficial means of minimizing additional subsidence and fissuring as well as reducing axial-compressive-type casing damage.

Hansen, K.S. [Shell Western E and P Inc., Houston, TX (United States); Chan, C.K. [Shell Oil Co., Houston, TX (United States); Prats, M.

1995-08-01T23:59:59.000Z

273

PREPARATION OF METAL POWDER COMPACTS PRIOR TO PRESSING  

DOE Patents (OSTI)

A method of fabricating uranium by a powder metallurgical technique is described. It consists in introducing powdered uranium hydride into a receptacle shaped to coincide with the coatour of the die cavity and heating the hydride so that it decomposes to uranium metal. The metal particles cohere in the shapw of the receptacle and thereafter the prefurmed metal powder is pressed and sintered to obtain a dense compact.

Mansfield, H.

1958-08-26T23:59:59.000Z

274

Compact Refractive Imaging Spectrometer Designs Utilizing Immersed Gratings  

DOE Patents (OSTI)

A compact imaging spectrometer comprising an entrance slit for directing light, a first means for receiving the light and focusing the light, an immersed diffraction grating that receives the light from the first means and defracts the light, a second means for receiving the light from the immersed diffraction grating and focusing the light, and an image plane that receives the light from the second means

Lerner, Scott A. (Livermore, CA); Bennett, Charles L. (Livermore, CA); Bixler, Jay V. (Oakland, CA); Kuzmenko, Paul J. (Livermore, CA); Lewis, Isabella T. (San Jose, CA)

2005-07-26T23:59:59.000Z

275

Sensitivity in X-ray grating interferometry on compact systems  

SciTech Connect

The optimization of compact X-ray grating interferometry systems is crucial for the progress of this technique in industrial devices. Here, an analytical formulation for the sensitivity of the phase contrast image acquisition is derived using previous results from noise analyses. Furthermore, experimental measurements of the sensitivity for different configurations are compared, providing further insight into the dependence on polychromatic radiation. Finally, strategies for the geometrical optimization are given.

Thuering, Thomas; Modregger, Peter; Haemmerle, Stefan; Weiss, Stephan; Nueesch, Joachim; Stampanoni, Marco [Swiss Light Source, Paul Scherrer Institut, Villigen PSI (Switzerland) and Institute for Biomedical Engineering, Swiss Federal Institute of Technology, Zurich (Switzerland); School of Biology and Medicine, University of Lausanne, Lausanne (Switzerland); SCANCO Medical AG, Bruettisellen (Switzerland)

2012-07-31T23:59:59.000Z

276

Stein's Method and Characters of Compact Lie Groups  

E-Print Network (OSTI)

Stein's method is used to study the trace of a random element from a compact Lie group or symmetric space. Central limit theorems are proved using very little information: character values on a single element and the decomposition of the square of the trace into irreducible components. This is illustrated for Lie groups of classical type and Dyson's circular ensembles. The approach in this paper will be useful for the study of higher dimensional characters, where normal approximations need not hold.

Jason Fulman

2008-06-13T23:59:59.000Z

277

Compact high resolution isobar separator for study of exotic decays  

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

Compact high resolution isobar separator for study of Compact high resolution isobar separator for study of exotic decays A. Piechaczek 1 , V. Shchepunov 1 , H. K. Carter 1 J. C. Batchelder 1 , E. F. Zganjar 2 1 UNIRIB, Oak Ridge Associated Universities, Oak Ridge, TN 37830 2 Department of Physics & Astronomy, Louisiana State University, Baton Rouge, LA 70803 A compact isobar separator, based on the Multi-Pass-Time-of-Flight (MTOF) principle, is developed [1]. A mass resolving power (MRP) as spectrometer of 110,000 (FWHM) is achieved in Time-of-Flight spectra of N 2 molecules (no physical ion separation) after 300 laps or ToF = 9.7 ms. Operated as a separator [2], molecules of N 2 and CO with ∆M/M = 1/2500 or 10.433 MeV are separated with a Bradbury Nielsen electrostatic ion gate, and the MRP (FWHM) is about 40,000 after 120 laps. In the separator as well as in

278

VALIDATION OF A THERMAL CONDUCTIVITY MEASUREMENT SYSTEM FOR FUEL COMPACTS  

SciTech Connect

A high temperature guarded-comparative-longitudinal heat flow measurement system has been built to measure the thermal conductivity of a composite nuclear fuel compact. It is a steady-state measurement device designed to operate over a temperature range of 300 K to 1200 K. No existing apparatus is currently available for obtaining the thermal conductivity of the composite fuel in a non-destructive manner due to the compacts unique geometry and composite nature. The current system design has been adapted from ASTM E 1225. As a way to simplify the design and operation of the system, it uses a unique radiative heat sink to conduct heat away from the sample column. A finite element analysis was performed on the measurement system to analyze the associated error for various operating conditions. Optimal operational conditions have been discovered through this analysis and results are presented. Several materials have been measured by the system and results are presented for stainless steel 304, inconel 625, and 99.95% pure iron covering a range of thermal conductivities of 10 W/m*K to 70 W/m*K. A comparison of the results has been made to data from existing literature.

Jeff Phillips; Colby Jensen; Changhu Xing; Heng Ban

2011-03-01T23:59:59.000Z

279

Ultra-Compact High-Efficiency Luminaire for General Illumination  

SciTech Connect

Cree has developed a new ultra-compact light emitting diode (LED) luminaire capable of providing high efficacy with excellent color quality that can lead to significant energy savings in today??s commercial and retail applications. This success was based on an integrated development effort tailoring the LED component characteristics, optics, thermal management and driver design for the small footprint to achieve an overall system efficiency of ? 70%. A new LED component was designed to provide high brightness and efficacy in a form factor that allowed for a small directional beam with a luminaire housing design able to dissipate the heat effectively using a small physical envelope. A very compact, 90% efficient driver was developed to meet the system performance while not taking away any thermal mass from the heat sink. A 91% efficient secondary optics was designed to maximize efficiency while providing a smooth beam. The reliability of the new LED component was robust under accelerated testing conditions. Luminaires were assembled integrating the novel LED component, secondary optics, heat sink and driver technology to demonstrate the system improvement. Cree has successfully completed this project by developing an ultra-compact LED luminaire that provided 380 lumens at a correlated color temperature (CCT) of 2822 K and color rendering index (CRI) of 94 with an efficacy of 94 lumens per watt (LPW) when operating at 4 W input power (steady state) with an overall system efficiency of 81%. At a higher input power of 9 Watts, the lamp provided 658 lumens at 71 LPW.

Ted Lowes

2012-04-08T23:59:59.000Z

280

Microscopic analysis of irradiated AGR-1 coated particle fuel compacts  

SciTech Connect

The AGR-1 experiment involved irradiation of 72 TRISO-coated particle fuel compacts to a peak burnup of 19.5% FIMA with no in-pile failures observed out of 3105 total particles. Irradiated AGR-1 fuel compacts have been cross-sectioned and analyzed with optical microscopy to characterize kernel, buffer, and coating behavior. Five compacts have been examined so far, spanning a range of irradiation conditions (burnup, fast fluence, and irradiation temperature) and including all four TRISO coating variations irradiated in the AGR-1 experiment. The cylindrical specimens were sectioned both transversely and longitudinally, then polished to expose between approximately 40-80 individual particles on each mount. The analysis focused primarily on kernel swelling and porosity, buffer densification and fracturing, buffer-IPyC debonding, and fractures in the IPyC and SiC layers. Characteristic morphologies have been identified, over 800 particles have been classified, and spatial distributions of particle types have been mapped. No significant spatial patterns were discovered in these cross sections. However, some trends were found between morphological types and certain behavioral aspects. Buffer fractures were found in approximately 23% of the particles, and these fractures often resulted in unconstrained kernel swelling into the open cavities. Fractured buffers and buffers that stayed bonded to IPyC layers appear related to larger pore size in kernels. Buffer-IPyC interface integrity evidently factored into initiation of rare IPyC fractures. Fractures through part of the SiC layer were found in only three particles, all in conjunction with IPyC-SiC debonding. Compiled results suggest that the deliberate coating fabrication variations influenced the frequencies of IPyC fractures, IPyC-SiC debonds, and SiC fractures.

Scott Ploger; Paul Demkowicz; John Hunn; Robert Morris

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

COMPACT BINARY PROGENITORS OF SHORT GAMMA-RAY BURSTS  

SciTech Connect

In recent years, detailed observations and accurate numerical simulations have provided support to the idea that mergers of compact binaries containing either two neutron stars (NSs) or an NS and a black hole (BH) may constitute the central engine of short gamma-ray bursts (SGRBs). The merger of such compact binaries is expected to lead to the production of a spinning BH surrounded by an accreting torus. Several mechanisms can extract energy from this system and power the SGRBs. Here we connect observations and numerical simulations of compact binary mergers, and use the current sample of SGRBs with measured energies to constrain the mass of their powering tori. By comparing the masses of the tori with the results of fully general-relativistic simulations, we are able to infer the properties of the binary progenitors that yield SGRBs. By assuming a constant efficiency in converting torus mass into jet energy, {epsilon}{sub jet} = 10%, we find that most of the tori have masses smaller than 0.01 M{sub Sun }, favoring 'high-mass' binary NSs mergers, i.e., binaries with total masses {approx}> 1.5 the maximum mass of an isolated NS. This has important consequences for the gravitational wave signals that may be detected in association with SGRBs, since 'high-mass' systems do not form a long-lived hypermassive NS after the merger. While NS-BH systems cannot be excluded to be the engine of at least some of the SGRBs, the BH would need to have an initial spin of {approx}0.9 or higher.

Giacomazzo, Bruno [JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309 (United States); Perna, Rosalba [JILA and Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309 (United States); Rezzolla, Luciano [Max-Planck-Institut fuer Gravitationsphysik, Albert-Einstein-Institut, Potsdam D-14476 (Germany); Troja, Eleonora [NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Lazzati, Davide [Department of Physics, NC State University, 2401 Stinson Drive, Raleigh, NC 27695-8202 (United States)

2013-01-10T23:59:59.000Z

282

Structural Reliability: Assessing the Condition and Reliability of Casing in Compacting Reservoirs  

E-Print Network (OSTI)

Casing has a higher risk of failure in a compacting reservoir than in a typical reservoir. Casing fails when reservoir compaction induces compression and shear stresses onto it. They compact as reservoir pressure depletes during production. High compaction reservoirs typically are composed of unconsolidated, overpressured rocks such as chalk, diatomite, and sandstone. Pore pressure depletion increases effective stress, which is the rock matrix stress pushing upward against overburden pressure. Effective stress may exceed rock compressive strength, inducing compaction. Wells in compacting reservoirs risk high failure and deformation rates. This project introduces the concept of structural reliability to quantify casing failure risks in compacting reservoirs. This research developed probabilistic models for casing capacities using current design methods and a reservoir compaction load using finite-element model simulations. Probabilistic models were used in creating two limit-states functions to predict casing failure: axial yielding and buckling failures. A limit-state function describes the casing condition as the casing experiences a reservoir compaction load. The limit state function is the input in component and system analyses for casing fragility and conditional probability of casing failure. Fragilities can predict casing probability of failure as reservoir pressure is depleting. Sensitivity and importance analyses are also performed to determine the importance of parameters affecting the casing reliability. Applying the knowledge produced from this research to casing design methods can improve design reliabilities and forecast the risk of casing failure in compacting reservoirs.

Chantose, Prasongsit

2011-12-01T23:59:59.000Z

283

Preliminary results of post-irradiation examination of the AGR-1 TRISO fuel compacts  

Science Conference Proceedings (OSTI)

Five irradiated fuel compacts from the AGR-1 experiment have been examined in detail in order to assess in-pile fission product release behavior. Compacts were electrolytically deconsolidated and analyzed using the leach-burn-leach technique to measure fission product inventory in the compact matrix and identify any particles with a defective SiC layer. Loose particles were then gamma counted to measure the fission product inventory. One particle with a defective SiC layer was found in the five compacts examined. The fractional release of Ag 110m from the particles was significant. The total fraction of silver released from all the particles within a compact ranged from 0-0.63 and individual particles within a single compact often exhibited a very wide range of silver release. The average fractional release of Eu-154 from all particles in a compact was 2.410-41.310-2, which is indicative of release through intact coatings. The fractional Cs-134 inventory in the compact matrix was inventory was found in the compact matrix for two of the compacts, indicating significant release through intact coatings.

Paul Demkowicz; John Hunn; Robert Morris; Jason Harp; Philip Winston; Charles Baldwin; Fred Montgomery; Scott Ploger; Isabella van Rooyen

2012-10-01T23:59:59.000Z

284

Preliminary results of post-irradiation examination of the AGR-1 TRISO fuel compacts  

SciTech Connect

Five irradiated fuel compacts from the AGR-1 experiment have been examined in detail in order to assess in-pile fission product release behavior. Compacts were electrolytically deconsolidated and analyzed using the leach-burn-leach technique to measure fission product inventory in the compact matrix and identify any particles with a defective SiC layer. Loose particles were then gamma counted to measure the fission product inventory. One particle with a defective SiC layer was found in the five compacts examined. The fractional release of Ag 110m from the particles was significant. The total fraction of silver released from all the particles within a compact ranged from 0-0.63 and individual particles within a single compact often exhibited a very wide range of silver release. The average fractional release of Eu-154 from all particles in a compact was 2.410-41.310-2, which is indicative of release through intact coatings. The fractional Cs-134 inventory in the compact matrix was <210-5 when all coatings remained intact, indicating good cesium retention. Approximately 1% of the palladium inventory was found in the compact matrix for two of the compacts, indicating significant release through intact coatings.

Paul Demkowicz; John Hunn; Robert Morris; Jason Harp; Philip Winston; Charles Baldwin; Fred Montgomery; Scott Ploger; Isabella van Rooyen

2012-10-01T23:59:59.000Z

285

Radiation field modeling and optimization of a compact and modular  

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

Radiation field modeling and optimization of a compact and modular Radiation field modeling and optimization of a compact and modular multi-plate photocatalytic reactor (MPPR) for air/water purification by Monte Carlo method Title Radiation field modeling and optimization of a compact and modular multi-plate photocatalytic reactor (MPPR) for air/water purification by Monte Carlo method Publication Type Journal Article Year of Publication 2013 Authors Zazueta, Ana Luisa Loo, Hugo Destaillats, and Gianluca Li Puma Journal Chemical Engineering Journal Volume 217 Pagination 475-485 Date Published 02/01/2013 Abstract The radiation field in a multi-plate photocatalytic reactor (MPPR) for air or water purification was modeled and optimized using a Monte Carlo stochastic method. The MPPR consists of parallel photocatalytic plates irradiated by cylindrical UV lamps orthogonal to the plates. The photocatalyst titanium dioxide (TiO2) is supported on the plates as a thin film. The photoreactor design is compact and offers a large irradiated photocatalytic surface area, a high degree of photon utilization, low pressure drop and a modular design which can facilitate scale-up. These features are desirable for the decontamination of indoor air in ventilation ducts or for water detoxification. The Monte Carlo method was applied to determine three dimensionless reactor performance parameters: the photon absorption efficiency (Φ), the uniformity of the distribution of the dimensionless radiation intensity (η) and the overall photonic efficiency (Φ). The emission of photons from the light sources was simulated by the extensive source with superficial emission (ESSE) model. Simulations were performed by varying the catalyst reflectivity albedo, the number and the diameter of lamps, and the dimensions and spacing of the photocatalytic plates. Optimal design for a basic reactor module with one lamp was accomplished for lamp-diameter-to-plate-height ratio (β) of 0.7, while the plate-spacing-to-plate-height ratio (α) was correlated by [αoptimum = 0.191 β2 - 0.5597 β + 0.3854]. A multilamp arrangement leads to a feasible increase in the size and number of the plates and the irradiated photocatalytic surface area. The optimum design was validated by measuring the apparent quantum yield of the oxidation of toluene (7 ppmv) in a humidified air stream using immobilized TiO2 (Degussa P25). Experiments performed varying the geometrical parameter α correlated well with the model calculations, with maximum apparent quantum yield for α = 0.137. The results are directly transferable to the treatment of water by photocatalysis.

286

A compact neutron generator using a field ionization source  

Science Conference Proceedings (OSTI)

Field ionization as a means to create ions for compact and rugged neutron sources is pursued. Arrays of carbon nano-#12;bers promise the high #12;eld-enhancement factors required for efficient field ionization. We report on the fabrication of arrays of #12;field emitters with a density up to 10{sup 6} tips/cm{sup 2} and measure their performance characteristics using electron field emission. The critical issue of uniformity is discussed, as are efforts towards coating the nano-fibers to enhance their lifetime and surface properties.

Persaud, Arun; Waldmann, Ole; Kapadia, Rehan; Takei, Kuniharu; Javey, Ali; Schenkel, Thomas

2011-10-31T23:59:59.000Z

287

Compact cyclone filter train for radiological and hazardous environments  

DOE Patents (OSTI)

A compact cyclone filter train for the removal of hazardous and radiologi particles from a gaseous fluid medium which permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the separator with the cyclone separator and the filters mounted on a plate. The entire unit will have a hoist connection at the center of gravity so that the entire unit including the separator, the filters, and the base can be lifted and repositioned as desired.

Bench, Thomas R. (Pittsburgh, PA)

1998-01-01T23:59:59.000Z

288

Compact cyclone filter train for radiological and hazardous environments  

DOE Patents (OSTI)

A compact cyclone filter train is disclosed for the removal of hazardous and radiological particles from a gaseous fluid medium. This filter train permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the separator with the cyclone separator and the filters mounted on a plate. The entire unit will have a hoist connection at the center of gravity so that the entire unit including the separator, the filters, and the base can be lifted and repositioned as desired. 3 figs.

Bench, T.R.

1998-04-28T23:59:59.000Z

289

Numerical simulation of reservoir compaction in liquid dominated geothermal systems  

DOE Green Energy (OSTI)

A numerical model is introduced which simulates the effects of fluid production as well as reinjection on the vertical deformation of water dominated geothermal reservoirs. This program, based on an Integrated Finite Difference technique and Terzaghi's one-dimensional consolidation model, computes the transport of heat and water through porous media, and resulting pore volume changes. Examples are presented to show the effects of reservoir heterogeneities on the compaction of these hot water systems, as well as the effects of different production-injection schemes. The use of isothermal models to simulate the deformation of non-isothermal systems was also investigated.

Lippmann, M.J.; Narasimhan, T.N.; Witherspoon, P.A.

1976-12-01T23:59:59.000Z

290

Diffusion Welding of Compact Heat Exchangers for Nuclear Applications  

Science Conference Proceedings (OSTI)

The next--generation nuclear plant (NGNP) is designed to be a flexible source of energy, producing various mixes of electrical energy and process heat (for example, for hydrogen generation) on demand. Compact heat exchangers provide an attractive way to move energy from the helium primary reactor coolant to process heat uses. For process heat efficiency, reactor outlet temperatures of 750--900C are desirable. There are minor but deleterious components in the primary coolant; the number of alloys that can handle this environment is small. The present work concentrates on Alloys 800H and 617.

Denis Clark; Ron Mizia; Dr. Michael V. Glazoff; Mr. Michael W. Patterson

2012-06-01T23:59:59.000Z

291

Compact Ceramic Heat Exchangers for Corrosive Waste Gas Applications  

E-Print Network (OSTI)

The development of large ceramic heat exchangers is described and performance data given for units installed on steel industry soaking pits in the U.K. Operational experience since 1973 confirms that ceramic heat exchangers capable of operating with high airside pressures have long lives and low maintenance even when operating with dirty gases at 1350 deg. C and preheating combustion air to 800 deg. C. The design of compact units suitable for factory assembly is also described. Units have been developed for low temperature corrosive gas situations and have been applied to the pottery industry and are being developed for coal fired air heaters for the food industry.

Laws, W. R.; Reed, G. R.

1982-01-01T23:59:59.000Z

292

PREPARATION OF HIGH-DENSITY, COMPACTIBLE THORIUM OXIDE PARTICLES  

DOE Patents (OSTI)

A method is given for preparing millimeter-size, highdensity thorium oxide particles suitable for fabrication into nuclear reactor feel elements by means of vibratory compaction. A thorium oxide gel containing 3.7 to 7 weight per cent residual volatile nitrate and water is prepared by drying a thorium oxide sol. The gel is then slowly heated to a temperature of about 450DEC, and the resulting gel fragments are calcined. The starting sol is prepared by repeated dispersion of oxalate-source thorium oxide in a nitrate system or by dispersion of steam-denitrated thorium oxide in water. (AEC)

McCorkle, K.H.; Kleinsteuber, A.T.; Schilling, C.E.; Dean, O.C.

1962-05-22T23:59:59.000Z

293

Compact approach to monitored retrievable storage of spent fuel  

Science Conference Proceedings (OSTI)

Recent federal waste-management legislation has raised national interest in monitored retrievable storage (MRS) of unprocessed spent fuel from civilian nuclear power plants. We have reviewed the current MRS design approaches, and we have examined an alternative concept that is extremely compact in terms of total land use. This approach may offer substantial advantages in the areas of monitoring and in safeguards against theft, as well as in reducing the chances of groundwater contamination. Total facility costs are roughly estimated and found to be generally competitive with other MRS concepts. 4 references, 3 figures, 3 tables.

Muir, D.W.

1984-09-01T23:59:59.000Z

294

PDC (polycrystalline diamond compact) bit research at Sandia National Laboratories  

DOE Green Energy (OSTI)

From the beginning of the geothermal development program, Sandia has performed and supported research into polycrystalline diamond compact (PDC) bits. These bits are attractive because they are intrinsically efficient in their cutting action (shearing, rather than crushing) and they have no moving parts (eliminating the problems of high-temperature lubricants, bearings, and seals.) This report is a summary description of the analytical and experimental work done by Sandia and our contractors. It describes analysis and laboratory tests of individual cutters and complete bits, as well as full-scale field tests of prototype and commercial bits. The report includes a bibliography of documents giving more detailed information on these topics. 26 refs.

Finger, J.T.; Glowka, D.A.

1989-06-01T23:59:59.000Z

295

Compact cyclone filter train for radiological and hazardous environments  

DOE Patents (OSTI)

A compact cyclone filter train is described for the removal of hazardous and radiological particles from a gaseous fluid medium which permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the separator with the cyclone separators and the filters mounted on a plate. The entire unit will have a hoist connection at the center of gravity so that the entire unit including the separator, the filters, and the base can be lifted and repositioned as desired.

Bench, T.R.

1996-12-31T23:59:59.000Z

296

Microchannel Process Technology for Compact Methane Steam Reforming  

Science Conference Proceedings (OSTI)

The study of microchannel reaction engineering and applications to compact chemical reactors has expanded rapidly both academically and industrially in recent years. Velocys{reg_sign}, a spin-out company from Battelle Memorial Institute, is commercializing microchannel process technology for large-scale chemical processing. Hydrogen production at industrial rates in compact Velocys hardware is made possible through increases in both heat and mass transfer rates for highly active and novel catalysts. In one example, a microchannel methane steam reforming reactor is presented with integrated catalytic partial oxidation of methane prior to catalytic combustion with low excess air (25%) to generate the required energy for undothermic methane steam reforming in adjacent channels. Heat transfer rates from the exothermic reactions exceed 18 W/cm{sup 2} of interplanar heat transfer surface area and exceed 65 W/cm{sup 3} of total reaction volume for a methane steam reforming contact time near 4 milliseconds. The process intensity of the Velocys methane steam reformer well exceeds that of conventional steam reformers, which have a typical volumetric heat flux below 1 W/cm{sup 3}. The integration of multiple unit operations and improvements in process intensification result in significant capital and operating cost savings for commercial applications.

Tonkovich, A L.; Perry, Steve; Wang, Yong; Qiu, Dongming; LaPlante, Timothy J.; Rogers, William A.

2004-12-01T23:59:59.000Z

297

The Compact Muon Solenoid (CMS) Experiment on YouTube  

DOE Data Explorer (OSTI)

The Compact Muon Solenoid (CMS) experiment is one of two large general-purpose particle physics detectors built on the proton-proton Large Hadron Collider (LHC) at CERN in Switzerland and France. The CMS detector is located in an underground cavern at Cessy in France and studies many aspects of proton collisions at 14 TeV, the center-of-mass energy of the LHC particle accelerator. [http://en.wikipedia.org/wiki/Compact_Muon_Solenoid]. US groups have made significant contributions to nearly every aspect of the detector throughout all phases including construction, installation and now in the data-taking stage. The US collaboration also made major contributions to the construction and operation of the computing facilities needed to analyze the unprecedented amount of data to be generated by CMS. This work includes the software that allows physicists to operate the CMS detector, reconstruct the data, analyze it and extract new physics. The CMS channel on YouTube was established in 2009.

298

Compact multiple-valued multiplexers using negative differential resistance devices  

E-Print Network (OSTI)

Abstract-Quantum electronic devices with negative differen-tial resistance (NDR) characteristics have been used to design compact multiplexers. These multiplexers may be used either as analog multiplexers where the signal on a single select line selects one out of four analog inputs, or as four-valued logic multiplexers where the select line and the input lines represent one of four quantized signal values and the output line corre-sponds to the selected input. Any four-valued logic function can be implemented using only four-valued multiplexers (also known as T-gates), and this T-gate uses just 13 devices (transistors) as compared to 44 devices in CMOS. The design of the T-gate was done using a combination of resonant tunneling diodes (RTDs) and heterojunction bipolar transistors (HBTs) with the folded I-V characteristic (NDR characteristic) of the RTDs providing the compact logic implementation and the HBTs providing the gain and isolation. The application of the same design principles to the design of T-gates using other NDR devices such as reso-nant tunneling hot electron transistors (RHETs) and resonant tunneling bipolar transistors (RTBTs) is also demonstrated. I.

H. L. Chan; S. Mohan; Pinaki Mazumder; Senior Member; George I. Haddad

1996-01-01T23:59:59.000Z

299

Origin of Compact Triangular Islands in Metal-on-Metal Growth  

Science Conference Proceedings (OSTI)

The microscopic origin of compact triangular islands on close-packed surfaces is identified using kinetic Monte Carlo simulations with energy barriers obtained from density-functional calculations. In contrast to earlier accounts, corner diffusion anisotropy is found to control the shape of compact islands at intermediate temperatures. We rationalize the correlation between the orientation of dendrites grown at low temperatures and triangular islands grown at higher temperatures, and explain why in some systems dendrites grow fat before turning compact.

Bogicevic, Alexander; Lundqvist, Bengt I.; Ovesson, Staffan

1999-07-12T23:59:59.000Z

300

Method of using in situ porosity measurements to place an upper bound on geothermal reservoir compaction  

DOE Green Energy (OSTI)

Placing an upper bound on reservoir compaction requires placing a lower bound on the reservoir effective compaction modulus. Porosity-depth data can be used to find that lower-bound modulus in a young sedimentary basin. Well-log and sample porosity data from a geothermal field in the Imperial Valley, CA, give a lower-bound modulus of 7.7 x 10{sup 3} psi. This modulus is used with pressure drops calculated for a reservoir to determine an upper bound on reservoir compaction. The effects of partial reinjection and aquifer leakage on upper-bound subsidence estimated from the compaction are illustrated for a hypothetical reservoir and well array.

Schatz, J.F.; Kasameyer, P.W.; Cheney, J.A.

1979-01-03T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Dimming of Compact Fluorescent Lamps Caused By Cold-Air Drafts  

Science Conference Proceedings (OSTI)

This Case Study documents the investigation performed by the New York Port Authority (PA) of the dimming of compact fluorescent lamps (CFLs) in the World Trade Center.

2003-12-31T23:59:59.000Z

302

EAC Recommendations for DOE Action Regarding the CSG Interstate Transmission Siting Compact- June 6, 2013  

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

EAC Recommendations for DOE Action Regarding the CSG Interstate Transmission Siting Compact, approved at the June 5-6, 2013 EAC Meeting.

303

Abart CDS - a New Compact Multi-pollutant Pot Gas and Alumina ...  

Science Conference Proceedings (OSTI)

Abstract Scope, A new modular Abart CDS is developed that integrates silos, alumina handling, heat exchangers, fans, SO2 scrubber and stack into a compact

304

Nuclear fuel particles and method of making nuclear fuel compacts therefrom  

DOE Patents (OSTI)

Methods for making nuclear fuel compacts exhibiting low heavy metal contamination and fewer defective coatings following compact fabrication from a mixture of hardenable binder, such as petroleum pitch, and nuclear fuel particles having multiple layer fission-product-retentive coatings, with the dense outermost layer of the fission-product-retentive coating being surrounded by a protective overcoating, e.g., pyrocarbon having a density between about 1 and 1.3 g/cm.sup.3. Such particles can be pre-compacted in molds under relatively high pressures and then combined with a fluid binder which is ultimately carbonized to produce carbonaceous nuclear fuel compacts having relatively high fuel loadings.

DeVelasco, Rubin I. (Encinitas, CA); Adams, Charles C. (San Diego, CA)

1991-01-01T23:59:59.000Z

305

BSA 07-22: Compact Room-Temperature Radiation Detector for Oil ...  

BSA 07-22: Compact Room-Temperature Radiation Detector for Oil & Gas Exploration. BNL Reference Number: BSA 07-22. Patent Status: U.S. Patent ...

306

Specification Test Compaction for Analog Circuits and MEMS  

E-Print Network (OSTI)

Testing a non-digital integrated system against all of its specifications can be quite expensive due to the elaborate test application and measurement setup required. We propose to eliminate redundant tests by employing e-SVM based statistical learning. Application of the proposed methodology to an operational amplifier and a MEMS accelerometer reveal that redundant tests can be statistically identified from a complete set of specification-based tests with negligible error. Specifically, after eliminating five of eleven specification-based tests for an operational amplifier, the defect escape and yield loss is small at 0.6% and 0.9%, respectively. For the accelerometer, defect escape of 0.2% and yield loss of 0.1% occurs when the hot and colt tests are eliminated. For the accelerometer, this level of Compaction would reduce test cost by more than half.

Biswas, Sounil; D., R; Blanton,; Pileggi, Larry T

2011-01-01T23:59:59.000Z

307

Color Superconductivity in Compact Stars and Gamma Ray Bursts  

E-Print Network (OSTI)

We study the effects of color superconductivity on the structure and formation of compact stars. We show that it is possible to satisfy most of recent observational boundaries on masses and radii if a diquark condensate forms in a hybrid or a quark star. Moreover, we find that a huge amount of energy, of the order of $10^{53}$ erg, can be released in the conversion from a (metastable) hadronic star into a (stable) hybrid or quark star, if the presence of a color superconducting phase is taken into account. Accordingly to the scenario proposed in Astrophys.J.586(2003)1250, the energy released in this conversion can power a Gamma Ray Burst. This mechanism can explain the recent observations indicating a delay, of the order of days or years, between a few Supernova explosions and the subsequent Gamma Ray Burst.

A. Drago; A. Lavagno; G. Pagliara

2003-04-08T23:59:59.000Z

308

A Massive Pulsar in a Compact Relativistic Binary  

E-Print Network (OSTI)

Many physically motivated extensions to general relativity (GR) predict significant deviations in the properties of spacetime surrounding massive neutron stars. We report the measurement of a 2.01 +/- 0.04 solar mass pulsar in a 2.46-hr orbit with a 0.172 +/- 0.003 solar mass white dwarf. The high pulsar mass and the compact orbit make this system a sensitive laboratory of a previously untested strong-field gravity regime. Thus far, the observed orbital decay agrees with GR, supporting its validity even for the extreme conditions present in the system. The resulting constraints on deviations support the use of GR-based templates for ground-based gravitational wave detectors. Additionally, the system strengthens recent constraints on the properties of dense matter and provides insight to binary stellar astrophysics and pulsar recycling.

John Antoniadis; Paulo C. C. Freire; Norbert Wex; Thomas M. Tauris; Ryan S. Lynch; Marten H. van Kerkwijk; Michael Kramer; Cees Bassa; Vik S. Dhillon; Thomas Driebe; Jason W. T. Hessels; Victoria M. Kaspi; Vladislav I. Kondratiev; Norbert Langer; Thomas R. Marsh; Maura A. McLaughlin; Timothy T. Pennucci; Scott M. Ransom; Ingrid H. Stairs; Joeri van Leeuwen; Joris P. W. Verbiest; David G. Whelan

2013-04-25T23:59:59.000Z

309

Compact mass spectrometer for plasma discharge ion analysis  

DOE Patents (OSTI)

A mass spectrometer and methods are disclosed for mass spectrometry which are useful in characterizing a plasma. This mass spectrometer for determining type and quantity of ions present in a plasma is simple, compact, and inexpensive. It accomplishes mass analysis in a single step, rather than the usual two-step process comprised of ion extraction followed by mass filtering. Ions are captured by a measuring element placed in a plasma and accelerated by a known applied voltage. Captured ions are bent into near-circular orbits by a magnetic field such that they strike a collector, producing an electric current. Ion orbits vary with applied voltage and proton mass ratio of the ions, so that ion species may be identified. Current flow provides an indication of quantity of ions striking the collector. 7 figs.

Tuszewski, M.G.

1997-07-22T23:59:59.000Z

310

Compact mass spectrometer for plasma discharge ion analysis  

DOE Patents (OSTI)

A mass spectrometer and methods for mass spectrometry which are useful in characterizing a plasma. This mass spectrometer for determining type and quantity of ions present in a plasma is simple, compact, and inexpensive. It accomplishes mass analysis in a single step, rather than the usual two-step process comprised of ion extraction followed by mass filtering. Ions are captured by a measuring element placed in a plasma and accelerated by a known applied voltage. Captured ions are bent into near-circular orbits by a magnetic field such that they strike a collector, producing an electric current. Ion orbits vary with applied voltage and proton mass ratio of the ions, so that ion species may be identified. Current flow provides an indication of quantity of ions striking the collector.

Tuszewski, Michel G. (Los Alamos, NM)

1997-01-01T23:59:59.000Z

311

Mode Conversion Heating Scenarios for the National Compact Stellarator Experiment  

DOE Green Energy (OSTI)

Radio-frequency heating scenarios for the National Compact Stellarator eXperiment (NCSX) are considered. The focus here is on mode conversion from the fast to the slow ion Bernstein wave as either an electron or ''bulk'' ion heating technique, using a high-field side launch to directly access the ion-ion hybrid layer. Modeling for the planned parameters of NCSX [R(subscript ave) {approximately} 1.4 m, a(subscript ave) {approximately} 0.4 m, B(subscript T)(0) {approximately} 1.2-2 T, n(subscript e)(0) {approximately} 2-5 x 10(superscript19) m(superscript -3), T(subscript e)(0) {approximately} T(subscript i)(0) {approximately} 1-2 keV] for mode conversion in D-H and D-3He plasmas is presented. Possible types of high-field side antennas are also briefly discussed.

Majeski, R.; Wilson, J.R.; and Zarnstorff, M.

2001-05-18T23:59:59.000Z

312

A Compact Gas Cerenkov Detector with Novel Optics  

E-Print Network (OSTI)

We discuss the design and performance of a threshold Cerenkov counter for identification of charged hadrons. The radiator is pressurized gas, which is contained in thin-walled cylindrical modules. A mirror system of novel design transports Cerenkov photons to photomultiplier tubes. This system is compact, contains relatively little material, and has a large fraction of active volume. A prototype of a module designed for the proposed CLEO III detector has been studied using cosmic rays. Results from these studies show good agreement with a detailed Monte Carlo simulation of the module and indicate that it should achieve separation of pions and kaons at the 2.5-3.0sigma level in the momentum range 0.8-2.8 GeV/c. We predict performance for specific physics analyses using a GEANT-based simulation package.

Michael Sivertz; Bruce Berger; Richard Ehrlich; John Bartlet; Steven Csorna; Vivek Jain; Szabolcs Marka; Kay Kinoshita; Paula Pomianowski

1996-07-31T23:59:59.000Z

313

Compact Couplers for Photonic Crystal Laser-Driven Accelerator Structures  

SciTech Connect

Photonic crystal waveguides are promising candidates for laser-driven accelerator structures because of their ability to confine a speed-of-light mode in an all-dielectric structure. Because of the difference between the group velocity of the waveguide mode and the particle bunch velocity, fields must be coupled into the accelerating waveguide at frequent intervals. Therefore efficient, compact couplers are critical to overall accelerator efficiency. We present designs and simulations of high-efficiency coupling to the accelerating mode in a three-dimensional photonic crystal waveguide from a waveguide adjoining it at 90{sup o}. We discuss details of the computation and the resulting transmission. We include some background on the accelerator structure and photonic crystal-based optical acceleration in general.

Cowan, Benjamin; /Tech-X, Boulder; Lin, M.C.; /Tech-X, Boulder; Schwartz, Brian; /Tech-X, Boulder; Byer, Robert; /Stanford U., Phys. Dept.; McGuinness, Christopher; /Stanford U., Phys. Dept.; Colby, Eric; /SLAC; England, Robert; /SLAC; Noble, Robert; /SLAC; Spencer, James; /SLAC

2012-07-02T23:59:59.000Z

314

Compact Gamma-ray Source Technology Development Study  

SciTech Connect

This study focuses on the applicability of current accelerator and laser technologies to the construction of compact, narrow bandwidth, gamma-ray sources for DHS missions in illicit materials detection. It also identifies research and development areas in which advancement will directly benefit these light sources. In particular, we review the physics of Compton scattering based light sources and emphasize the source properties most important to Nuclear Resonance Fluorescence (NRF) applications of interest. The influences of laser and electron beam properties on the light source are examined in order to evaluate the utility of different technologies for this application. Applicable bulk and fiber-based laser systems and laser recirculation technologies are discussed and Radio Frequency (RF) Linear Accelerator (linac) technologies are examined to determine the optimal frequency and pulse formats achievable.

Anderson, S G; Gibson, D J; Rusnak, B

2009-09-25T23:59:59.000Z

315

Compact, maintainable 80-KeV neutral beam module  

DOE Patents (OSTI)

A compact, maintainable 80-keV arc chamber, extractor module for a neutral beam system immersed in a vacuum of <10.sup.-2 Torr, incorporating a nested 60-keV gradient shield located midway between the high voltage ion source and surrounding grounded frame. The shield reduces breakdown or arcing path length without increasing the voltage gradient, tends to keep electric fields normal to conducting surfaces rather than skewed and reduces the peak electric field around irregularities on the 80-keV electrodes. The arc chamber or ion source is mounted separately from the extractor or ion accelerator to reduce misalignment of the accelerator and to permit separate maintenance to be performed on these systems. The separate mounting of the ion source provides for maintaining same without removing the ion accelerator.

Fink, Joel H. (Livermore, CA); Molvik, Arthur W. (Livermore, CA)

1980-01-01T23:59:59.000Z

316

Targeted coherent search for gravitational waves from compact binary coalescences  

SciTech Connect

We introduce a method for conducting a targeted, coherent search for compact binary coalescences. The search is tailored to be used as a follow-up to electromagnetic transients such as gamma-ray bursts. We derive the coherent search statistic for Gaussian detector noise and discuss the benefits of a coherent, multidetector search over coincidence methods. To mitigate the effects of nonstationary data, we introduce a number of signal consistency tests, including the null signal-to-noise ratio, amplitude consistency, and several {chi}{sup 2} tests. We demonstrate the search performance on Gaussian noise and on data from LIGO's fourth science run and verify that the signal consistency tests are capable of removing the majority of noise transients, giving the search an efficiency comparable to that achieved in Gaussian noise.

Harry, I. W.; Fairhurst, S. [School of Physics and Astronomy, Cardiff University, Queens Buildings, The Parade, Cardiff, CF24 3AA (United Kingdom)

2011-04-15T23:59:59.000Z

317

Compact light source performance in recessed type luminaires  

SciTech Connect

Photometric comparisons were made with an indoor, recessed, type luminaire using incandescent, high intensity discharge and compact fluorescent lamps. The test results show substantial performance advantages, as expected, for the discharge light sources where the efficacy gains can be in the order for 400% even when including the ballast losses associated with the discharge lamps. The candlepower distribution patterns emerging from these luminaries are also different from those associated with the baseline incandescent lamps, and which are in some ways, even more desirable from a uniformity of illuminance perspective. A section on fluorescent lamp starting is also included which describes a system having excellent starting characteristics in terms of electrode starting temperature (RH/RC technique), proper operating frequency to minimize unwanted IR interactions, and satisfactory current crest factor values to help insure life performance.

Hammer, E.E.

1998-11-01T23:59:59.000Z

318

Nonconformally flat initial data for binary compact objects  

SciTech Connect

A new method is described for constructing initial data for a binary neutron-star system in quasiequilibrium circular orbit. Two formulations for nonconformally flat data, waveless and near-zone helically symmetric, are introduced; in each formulation, the Einstein-Euler system, written in 3+1 form on an asymptotically flat spacelike hypersurface, is exactly solved for all metric components, including the spatially nonconformally flat potentials, and for irrotational flow. A numerical method applicable to both formulations is explained with an emphasis on the imposition of a spatial gauge condition. Results are shown for solution sequences of irrotational binary neutron-stars with matter approximated by parametrized equations of state that use a few segments of polytropic equations of state. The binding energy and total angular momentum of solution sequences computed within the conformally flat--Isenberg-Wilson-Mathews--formulation are closer to those of the third post-Newtonian (3PN) two point particles up to the closest orbits, for the more compact stars, whereas sequences resulting from the waveless/near-zone helically symmetric formulations deviate from the 3PN curve even more for the sequences with larger compactness. We think it likely that this correction reflects an overestimation in the Isenberg-Wilson-Mathews formulation as well as in the 3PN formula, by {approx}1 cycle in the gravitational-wave phase during the last several orbits. The work suggests that imposing spatial conformal flatness results in an underestimate of the quadrupole deformation of the components of binary neutron-star systems in the last few orbits prior to merger.

Uryu, Koji [Department of Physics, University of the Ryukyus, Senbaru, Nishihara, Okinawa 903-0213 (Japan); Limousin, Francois; Gourgoulhon, Eric [Laboratoire Univers et Theories, UMR 8102 du CNRS, Observatoire de Paris, Universite Paris Diderot, F-92190 Meudon (France); Friedman, John L. [Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, Wisconsin 53201 (United States); Shibata, Masaru [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2009-12-15T23:59:59.000Z

319

Systems Analysis of a Compact Next Step Burning Plasma Experiment  

Science Conference Proceedings (OSTI)

A new burning plasma systems code (BPSC) has been developed for analysis of a next step compact burning plasma experiment with copper-alloy magnet technology. We consider two classes of configurations: Type A, with the toroidal field (TF) coils and ohmic heating (OH) coils unlinked, and Type B, with the TF and OH coils linked. We obtain curves of the minimizing major radius as a function of aspect ratio R(A) for each configuration type for typical parameters. These curves represent, to first order, cost minimizing curves, assuming that device cost is a function of major radius. The Type B curves always lie below the Type A curves for the same physics parameters, indicating that they lead to a more compact design. This follows from that fact that a high fraction of the inner region, r < R-a, contains electrical conductor material. However, the fact that the Type A OH and TF magnets are not linked presents fewer engineering challenges and should lead to a more reliable design. Both the Type A and Type B curves have a minimum in major radius R at a minimizing aspect ratio A typically above 2.8 and at high values of magnetic field B above 10 T. The minimizing A occurs at larger values for longer pulse and higher performance devices. The larger A and higher B design points also have the feature that the ratio of the discharge time to the current redistribution time is largest so that steady-state operation can be more realistically prototyped. A sensitivity study is presented for the baseline Type A configuration showing the dependence of the results on the parameters held fixed for the minimization study.

S.C. Jardin; C.E. Kessel; D. Meade; C. Neumeyer

2002-02-06T23:59:59.000Z

320

Numerical Analysis of a Multi-Row Multi-Column Compact Heat Exchanger  

E-Print Network (OSTI)

Numerical Analysis of a Multi-Row Multi-Column Compact Heat Exchanger Ashkan Motamedi1, Arturo of a compact heat exchanger to analyze the interaction between the fluid and its geometry. The overall as the inner-tube fluid. Two heat exchanger configurations, in which the tube arrangement is either in

Pacheco, Jose Rafael

Note: This page contains sample records for the topic "fluor escent compact" 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

The intercellular organization of the two muscular systems in the adult salmonid heart, the compact  

E-Print Network (OSTI)

The intercellular organization of the two muscular systems in the adult salmonid heart, the compact of the salmonid heart consists of an outer compact layer of circumferentially arranged cardio- myocytes encasing. While many studies have detailed the anatomical structure of fish hearts, few have considered how

Vellend, Mark

322

Fourth-order alternating direction implicit compact finite difference schemes for two-dimensional Schrdinger equations  

Science Conference Proceedings (OSTI)

In this paper, alternating direction implicit compact finite difference schemes are devised for the numerical solution of two-dimensional Schrodinger equations. The convergence rates of the present schemes are of order O(h^4+@t^2). Numerical experiments ... Keywords: ADI compact difference scheme, Conservation law, Error estimate, Schrdinger equation

Zhen Gao; Shusen Xie

2011-04-01T23:59:59.000Z

323

THE ASTROPHYSICS OF ULTRA-COMPACT BINARIES A WHITE PAPER FOR THE ASTRO2010 DECADAL REVIEW  

E-Print Network (OSTI)

THE ASTROPHYSICS OF ULTRA-COMPACT BINARIES A WHITE PAPER FOR THE ASTRO2010 DECADAL REVIEW G interact- ing AM CVn stars, ultra-compact X-ray binaries, detached double white dwarfs, double neutron stars, white dwarf/neutron star binaries and as yet unobserved binaries such as black holes with neutron

324

Nano-compact disks with 400 Gbit/in2 storage density fabricated  

E-Print Network (OSTI)

Nano-compact disks with 400 Gbit/in2 storage density fabricated using nanoimprint lithography and read with proximal probe Peter R. Kraussa) and Stephen Y. Choub) NanoStructure Laboratory, Department for publication 30 September 1997 Nano-compact disks Nano-CDs with 400 Gbit/in2 topographical bit density nearly

325

Specification-based Compaction of Directed Tests for Functional Validation of Pipelined Processors  

E-Print Network (OSTI)

Set Test Generation Processor Specification Compaction (States & Transitions) Coverage Model (FSM states/transitions) Processor Model (FSM) Figure 1: Functional test compaction methodology Figure 1 shows of a processor, we create a finite state machine (FSM) model and define FSM state and transition coverage metrics

Mishra, Prabhat

326

Location-based services to control roller compaction quality for rock-fill dams  

Science Conference Proceedings (OSTI)

It is very important for rock-fill dams to carry out more accurately monitoring and remotely quality controlling in real time. Based on location based services, an integration platform, with the name of CRCQ-DAM, is proposed to control roller compaction ... Keywords: RTK, WebGIS, location-based services, rock-fill dams, roller compaction quality

Hao Wu; Qiankun Wang; Jiru Zhang; Qin Chen; Xupeng Wang

2009-09-01T23:59:59.000Z

327

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

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

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

328

A Compact High Energy Camera for the Cherenkov Telescope Array  

E-Print Network (OSTI)

The Compact High Energy Camera (CHEC) is a camera-development project involving UK, US, Japanese and Dutch institutes for the dual-mirror Small-Sized Telescopes (SST-2M) of the Cherenkov Telescope Array (CTA). Two CHEC prototypes, based on different photosensors are funded and will be assembled and tested in the UK over the next ~18 months. CHEC is designed to record flashes of Cherenkov light lasting from a few to a hundred nanoseconds, with typical RMS image width and length of ~0.2 x 1.0 degrees, and has a 9 degree field of view. The physical camera geometry is dictated by the telescope optics: a curved focal surface with radius of curvature 1m and diameter ~35cm is required. CHEC is designed to work with both the ASTRI and GATE SST-2M telescope structures and will include an internal LED flasher system for calibration. The first CHEC prototype will be based on multi-anode photomultipliers (MAPMs) and the second on silicon photomultipliers (SiPMs or MPPCs). The first prototype will soon be installed on the...

Daniel, M K; Berge, D; Buckley, J; Chadwick, P M; Cotter, G; Funk, S; Greenshaw, T; Hidaka, N; Hinton, J; Lapington, J; Markoff, S; Moore, P; Nolan, S; Ohm, S; Okumura, A; Ross, D; Sapozhnikov, L; Schmoll, J; Sutcliffe, P; Sykes, J; Tajima, H; Varner, G S; Vandenbroucke, J; Vink, J; Williams, D

2013-01-01T23:59:59.000Z

329

A compact neutron detector for a geology application  

Science Conference Proceedings (OSTI)

The authors recently designed and built a compact neutron detector for a geology experiment. The detector had to fit inside a 1.5-in.-diam borehole in a large block of concrete. They attached a gas-filled, 1-in.-diam {sup 3}He tube to a 1-in.-diam electronics preamplifier package of their design. The electronics package consists of a cylindrically shaped, high-voltage section and a single-channel analyzer with a buffered output. The low-voltage components are mounted on a printed-circuit board. The circuit board and the high-voltage section are attached to a semicylindrical base. The outputs consist of a light-emitting diode for visual observations and a fixed-width, TTL-compatible pulse for a counter. This internal assembly is equipped with coaxial connectors and slips into a thin-walled tube that serves as the preamplifier housing. Power for a detector is supplied by an external, high-voltage supply and a 5-Vdc supply.

Biddle, R.S.; Collinsworth, P.R.

1991-12-31T23:59:59.000Z

330

On the Evolution of Helium in Blue Compact Galaxies  

E-Print Network (OSTI)

We discuss the chemical evolution of dwarf irregular and blue compact galaxies in light of recent data, new stellar yields and chemical evolution models. We examine the abundance data for evidence of HII region self-enrichment effects, which would lead to correlations in the scatter of helium, nitrogen, and oxygen abundances around their mean trends. The observed helium abundance trends show no such correlations, though the nitrogen--oxygen trend does show strong evidence for real scatter beyond observational error. We construct simple models for the chemical evolution of these galaxies, using the most recent yields of \\he4, C, N and O in intermediate- and high-mass stars. The effects of galactic outflows, which can arise both from bulk heating and evaporation of the ISM, and from the partial escape of enriched supernova ejecta are included. In agreement with other studies, we find that supernova-enriched outflows can roughly reproduce the observed He, C, N, and O trends; however, in models that fit N versus O, the slopes $\\Delta Y/\\Delta$O and $\\Delta Y/\\Delta$N consistently fall more than $2\\sigma$ below the fit to observations. We discuss the role of the models and their uncertainties in the extrapolation of primordial helium from the data. We also explore the model dependence arising nucleosynthesis uncertainties associated with nitrogen yields in intermediate mass stars, the fate of $8-11 \\msol$ stars, and massive star winds.

Brian D. Fields; Keith A. Olive

1998-03-25T23:59:59.000Z

331

A Plastic-Core Compact Heat Exchanger for Energy Conservation  

E-Print Network (OSTI)

This paper describes a compact, single-pass, cross-flow type, gas-to-gas heat exchanger with a polyolefin (polyethylene or polypropylene) core whose seams are welded through a proprietary process. It is constructed of several extruded polyolefin sheets with passageway cross-section of 4 mm (0.159 inch) by 4.4 mm (0.173 inch) which are separated by ribs of the same material that form the cross-flow passages of 137 mm (5.4 inches) by 3.8 mm (0.15 inch). The overall dimensions of a typical single-core unit are 1676 mm (5.5 ft) x 1219 mm (4 ft) x 3048 mm (10 ft) high including the core, the supply, and exhaust gas assemblies. The efficiency of this heat exchanger is on the order of 60-80% and it does not deteriorate with time because the exposed surfaces tend to resist fouling. Pressure drop was in the range of 0.2 -0.6 inches of water column. Applications include efficiency improvements in boiler and HVAC operations, drying, food processing, and the paper, chemical, and agricultural industries.

Lazaridis, A.; Rafailidis, E.

1995-04-01T23:59:59.000Z

332

Compact Beta Particle/Positron Imager for Plant Biology  

Science Conference Proceedings (OSTI)

The 11CO2 tracer is used to facilitate plant biology research towards optimization of plant productivity, biofuel development and carbon sequestration in biomass. Positron emission tomography (PET) imaging has been used to study carbon transport in live plants using 11CO2. Plants typically have very thin leaves resulting in little medium for the emitted positrons to undergo an annihilation event. For the emitted positron from 11C decay approximately 1mm of water equivalent material is needed for positron annihilation. Thus most of the positrons do not annihilate inside the leaf, resulting in limited sensitivity for PET imaging. To address this problem we have developed a compact beta-positive beta-minus particle (BPBM) imager for 11CO2 leaf imaging. The detector is based on a Hamamatsu H8500 position sensitive photomultiplier tube optically coupled via optical grease and a 3mm thick glass plate to a 0.5mm thick Eljin EJ-212 plastic scintillator. The detector is equipped with a flexible arm to allow its placement and orientation on the leaf of the plant of interest while maintaining the leaf's original orientation. We are planning to utilize the imaging device at the Duke University Phytotron to investigate dynamic carbon transport differences between invasive and native species.

Weisenberger, Andrew; Lee, Seung Joon; McKisson, John; Xi, Wenze; Zorn, Carl; Stolin, Alexander; Majewski, Stan; Majewski, Stanislaw; Howell, Calvin; Crowell, Alec

2011-06-01T23:59:59.000Z

333

PU(2) Monopoles, I: Regularity, Uhlenbeck Compactness, and Transversality  

E-Print Network (OSTI)

We prove the existence of perturbations for the PU(2) monopole equations, yielding transversality on the complement of the anti-self-dual or reducible solutions, and the existence of an Uhlenbeck compactification for the moduli space of solutions to these perturbed PU(2) monopole equations. In December 1994, V. Pidstrigach and A. Tyurin and then others proposed a method to prove Witten's conjecture concerning the relation between the Donaldson and Seiberg-Witten invariants of smooth four-manifolds. Their proposal uses a moduli space of solutions to the PU(2) monopole equations, which are a natural generalization of the U(1) monopole equations of Seiberg and Witten and the equation for anti-self-dual SO(3) connections, to construct a cobordism between links of compact moduli spaces of U(1) monopoles of Seiberg-Witten type and the moduli space of anti-self-dual connections, which appear as singularities in this larger moduli space. A basic requirement of this cobordism technique is the existence of an Uhlenbeck compactification for the moduli space of PU(2) monopoles and of generic-parameter transversality results for all the moduli spaces of PU(2) monopoles which appear in this compactification, on the complement of the anti-self-dual and U(1) solutions.

Paul M. N. Feehan; Thomas G. Leness

1997-10-29T23:59:59.000Z

334

From Nearby to High Redshift Compact Group of Galaxies  

E-Print Network (OSTI)

Nearby Compact Groups of Galaxies (CGs) are very complex systems, tracing their history is a challenge (e.g. Stephan's Quintet). The presence of a diffuse X-rays emission that often peaks in the center of CGs shows that CGs are bound structures, they show numerous signs of interaction but their lifetime in much longer than their crossing times. Hickson CGs clearly show different stages of evolution, from weakly interacting galaxies to merging systems. CGs infalling into clusters may provide a mechanism to form clusters at high redshifts (e.g. in A1367). Massive versions of today's CGs may have been the best candidate precursors of fossil groups. Do CGs mimic the high redshift universe? This is still an open question. Indeed, their high density and low velocity dispersion should induce a high interaction rate and fast merging, CGs are nevertheless long-lived structures. On the other hand, there is probably no (or a few) isolated CGs in the high z universe. CGs may fuel high z clusters, they may produce fossil ...

Amram, P; De Oliveira, C M; Plana, H; Epinat, B; Amram, Philippe; Balkowski, Chantal; Oliveira, Claudia Mendes de; Plana, Henri; Epinat, Benoit

2006-01-01T23:59:59.000Z

335

From Nearby to High Redshift Compact Group of Galaxies  

E-Print Network (OSTI)

Nearby Compact Groups of Galaxies (CGs) are very complex systems, tracing their history is a challenge (e.g. Stephan's Quintet). The presence of a diffuse X-rays emission that often peaks in the center of CGs shows that CGs are bound structures, they show numerous signs of interaction but their lifetime in much longer than their crossing times. Hickson CGs clearly show different stages of evolution, from weakly interacting galaxies to merging systems. CGs infalling into clusters may provide a mechanism to form clusters at high redshifts (e.g. in A1367). Massive versions of today's CGs may have been the best candidate precursors of fossil groups. Do CGs mimic the high redshift universe? This is still an open question. Indeed, their high density and low velocity dispersion should induce a high interaction rate and fast merging, CGs are nevertheless long-lived structures. On the other hand, there is probably no (or a few) isolated CGs in the high z universe. CGs may fuel high z clusters, they may produce fossil groups and fossil ellipticals. CGs at high z are difficult to detect and are still to be discovered. Interpretation of distant kinematics of galaxies may need nearby sample of galaxies to disentangle beam-smearing from evolutionary effects (e.g. HCG 31). Beam smearing effects may bias the Tully-Fisher relation (shifted towards lower M/L).

Philippe Amram; Chantal Balkowski; Claudia Mendes de Oliveira; Henri Plana; Benoit Epinat

2006-10-30T23:59:59.000Z

336

Compact, energy EFFICIENT neutron source: enabling technology for various applications  

SciTech Connect

A novel neutron source comprising of a deuterium beam (energy of about 100 KeV) injected into a tube filled with tritium gas and/or tritium plasma that generates D-T fusion reactions, whose products are 14.06 MeV neutrons and 3.52 MeV alpha particles, is described. At the opposite end of the tube, the energy of deuterium ions that did not interact is recovered. Beryllium walls of proper thickness can be utilized to absorb 14 MeV neutrons and release 2-3 low energy neutrons. Each ion source and tube forms a module. Larger systems can be formed from multiple units. Unlike currently proposed methods, where accelerator-based neutron sources are very expensive, large, and require large amounts of power for operation, this neutron source is compact, inexpensive, easy to test and to scale up. Among possible applications for this neutron source concept are sub-critical nuclear breeder reactors and transmutation of radioactive waste.

Hershcovitch, A.; Roser, T.

2009-12-01T23:59:59.000Z

337

THE GALFA-H I COMPACT CLOUD CATALOG  

Science Conference Proceedings (OSTI)

We present a catalog of 1964 isolated, compact neutral hydrogen clouds from the Galactic Arecibo L-Band Feed Array Survey Data Release One. The clouds were identified by a custom machine-vision algorithm utilizing the difference of Gaussian kernels to search for clouds smaller than 20'. The clouds have velocities typically between |V{sub LSR}| =20 and 400 km s{sup -1}, line widths of 2.5-35 km s{sup -1}, and column densities ranging from 1 to 35 Multiplication-Sign 10{sup 18} cm{sup -2}. The distances to the clouds in this catalog may cover several orders of magnitude, so the masses may range from less than a solar mass for clouds within the Galactic disk, to greater than 10{sup 4} M{sub Sun} for high-velocity clouds (HVCs) at the tip of the Magellanic Stream. To search for trends, we separate the catalog into five populations based on position, velocity, and line width: HVCs; galaxy candidates; cold low-velocity clouds (LVCs); warm, low positive-velocity clouds in the third Galactic quadrant; and the remaining warm LVCs. The observed HVCs are found to be associated with previously identified HVC complexes. We do not observe a large population of isolated clouds at high velocities as some models predict. We see evidence for distinct histories at low velocities in detecting populations of clouds corotating with the Galactic disk and a set of clouds that is not corotating.

Saul, Destry R.; Peek, J. E. G.; Grcevich, J.; Putman, M. E.; Brown, A. R. H.; Hamden, E. T. [Department of Astronomy, Columbia University, New York, NY 10027 (United States); Douglas, K. A. [Physics and Astronomy, University of Calgary/Dominion Radio Astrophysical Observatory, P.O. Box 248, Penticton, BC V2A 6J9 (Canada); Korpela, E. J. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Stanimirovic, S.; Lee, M.; Burkhart, B.; Pingel, N. M. [Department of Astronomy, University of Wisconsin, Madison, 475 N Charter St, Madison, WI 53703 (United States); Heiles, C. [Radio Astronomy Lab, UC Berkeley, 601 Campbell Hall, Berkeley, CA 94720 (United States); Gibson, S. J. [Department of Physics and Astronomy, Western Kentucky University, Bowling Green, KY 42101 (United States); Begum, A. [Indian Institute of Science Education and Research, ITI Campus (Gas Rahat) Building, Govindpura, Bhopal-23 (India); Tonnesen, S. [Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544 (United States)

2012-10-10T23:59:59.000Z

338

Sintering of compacts of UN, (U,Pu)N, and PuN  

DOE Patents (OSTI)

>A method is provided for preparing a densified compact of a metal nitride selected from the group consisting of UN, (U,Pu)N, and PuN which comprises heating a green compact of at least one selected nitride in the mononitride single-phase region, as displayed by a phase diagram of the mononitride of said compact, in a nitrogen atmosphere at a pressure of nitrogen less than 760 torr. At a given temperature, this process produces a singlephase structure and a maximal sintered density as measured by mercury displacement. (Official Gazette)

Tennery, V.J.; Godfrey, T.G.; Bomar, E.S.

1973-10-16T23:59:59.000Z

339

Software Development for a CompactRIO-Based Wire Scanner Control and Data Acquisition SYstem  

SciTech Connect

The Beam Diagnostics and Instrumentation Team at the Los Alamos Neutron Science Center is developing a wire scanner data acquisition and control system with a National Instrument's compactRIO at its core. For this application, the compactRIO controller not only requires programming the FPGA and RT computer internal to the compactRIO, but also requires programming a client computer and a touch panel display. This article will summarize the hardware interfaces and describe the software design approach utilized for programming and interfacing the four systems together in order to fulfill the design requirements and promote reliable interoperability.

Sedillo, James Daniel [Los Alamos National Laboratory

2012-05-16T23:59:59.000Z

340

The effects of supply harmonics on the performance of compact fluorescent lamps  

SciTech Connect

This paper describes a performance evaluation of ten compact fluorescent lighting systems operated with sinusoidal and distorted voltage waveform conditions. The lamps were either provided with an electronic ballast, a magnetic core ballast or a magnetic core ballast with a power factor correction circuit. The test results show that the electrical performance of the compact fluorescent lamps for both sinusoidal and distorted voltage waveform operation is related to the different types of ballast used. The cost of operation of these compact fluorescent lamps was calculated and compared to the cost of a conventional 60 W incandescent lamp.

Arseneau, R.; Ouellette, M.

1993-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

EPRI Transmission Line Reference Book (Blue Book): 115-345 kV Compact Line Design  

Science Conference Proceedings (OSTI)

This report is an updated edition of the industry standard on overhead line compaction, the EPRI Transmission Line Reference Book: 115-138 kV Compact Line Design, commonly known as the Blue Book, which was last published in 1978. Publication of this new edition is the culmination of three years of research by a team of experts in the field. The report includes the latest information on research, technology, materials, and utility experience with compact lines. Note that this electronic report is being pu...

2007-12-13T23:59:59.000Z

342

The Nature of the Activity in Hickson Compact Groups of Galaxies  

E-Print Network (OSTI)

We present the results of the spectral classification of the 82 brightest galaxies in a sample of 17 compact groups. We verify that the AGNs are preferentially located in the most early-type and luminous galaxies of the groups, as is usually observed in the field. But these AGNs also appear to be systematically concentrated towards the central parts of the groups. Our observations suggest a correlation between activity types, morphologies and densities of galaxies in the compact groups. This is consistent with a scenario in which galaxies of compact groups evolve by interacting with their environment and are currently in a quiet phase of their activity

Roger Coziol; Andr L. B. Ribeiro; Reinaldo R. de Carvalho; Hugo V. Capelato

1997-09-10T23:59:59.000Z

343

Unsaturated hydraulic conductivity of compacted sand-kaolin mixtures  

SciTech Connect

The unsaturated hydraulic conductivity of compacted sand-kaolin mixtures containing 0, 5, 10, and 30% kaolin (by dry weight) is measured for matric suctions, {psi}{sub m} < {approximately} 6.0 m. The measured unsaturated hydraulic conductivity (k{sub m}) values are compared with predicted unsaturated hydraulic conductivity (k{sub p}) values using the Brooks-Corey-Burdine and van Genuchten-Mualem relative hydraulic conductivity functions. In general, the accuracy of k{sub p} decreases with an increase in kaolin content or an increase in {psi}{sub m}. In addition, k{sub m} tends to be underpredicted for kaolin contents of 10 and 30% at relatively high suctions (1.0 m {le} {psi}{sub m} {le} 6.0 m) and overpredicted for kaolin contents of 0 and 5% at relatively low suctions (0.1 m {le} {psi}{sub m} < 1.0 m). For a given kaolin content and {psi}{sub m}, k{sub p} based on the Brooks-Corey-Burdine function tends to be more accurate than k{sub m} based on the van Genuchten-Mualem function. Finally, for 1.0 m {le} {psi}{sub m} {le} 6.0 m, k{sub p} based on analysis using the maximum volumetric water content ({theta}{sub m}) attained under steady-state flow conditions typically is more accurate than k{sub p} based on analysis using the saturated volumetric water content, {theta}{sub s}, where {theta}{sub m} {approximately} 84--90% of {theta}{sub s} in this study.

Chiu, T.F. [Genesis Group, Taipei (Taiwan, Province of China); Shackelford, C.D. [Colorado State Univ., Fort Collins, CO (United States). Dept. of Civil Engineering

1998-02-01T23:59:59.000Z

344

Observations and Inferred Physical Characteristics of Compact Intracloud Discharges  

Science Conference Proceedings (OSTI)

Compact intracloud discharges (CIDS) represent a distinct class of electrical discharges that occur within intense regions of thunderstorms. They are singular discharges that produce brief (typically 3 s in duration) broadband RF emissions that are 20 to 30 dB more powerful than radiation from all other recorded lightning processes in the HF and VHF radio spectrum. Far field electric field change recordings of CIDS consist of a single, large-amplitude bipolar pulse that begins to rise during the RF-producing phase of the CID and typically lasts for 20 s. During the summer of 1998 we operated a 4-station array of electric field change meters in New Mexico to support FORTE satellite observations of transient RF and optical sources and to learn more about the phenomenology and physical characteristics of CIDS. Over 800 CIDS were detected and located during the campaign. The events were identified on the basis of their unique field change waveforms. CID source heights determined using the relative delays of ionospherically reflected source emissions were typically between 4 and 11 km above ground level. Events of both positive and negative polarity were observed with events' of initially- negative polarity (indicative of discharges occurring between underlying positive and overlying negative charge) occurring at slightly higher altitudes. Within CID field change waveforms the CID pulse was often followed within a few ms by one or more smaller-amplitude pulses. We associate these subsequent pulses with the initial activity of a "normal" intracloud flash, the inference being that some fraction of the time, a CID initiates an intracloud lightning flash.

Argo, P.E.; Eack, K.B.; Holden, D.N.; Massey, R.S.; Shao, X.; Smith, D.A.; Wiens, K.C.

1999-02-01T23:59:59.000Z

345

Chemical Evolution of Dwarf Spheroidal and Blue Compact Galaxies  

E-Print Network (OSTI)

We studied the chemical evolution of Dwarf Spheroidal (dSph) and Blue Compact Galaxies (BCGs) by means of comparison between the predictions of chemical evolution models and several observed abundance ratios. Detailed models with up to date nucleosynthesis taking into account the role played by supernovae of different types (II, Ia) were developed for both types of galaxies allowing us to follow the evolution of several chemical elements. The models are specified by the prescriptions of the star formation (SF) and galactic wind efficiencies chosen to reproduce the main features of these galaxies. We also investigated a possible connection in the evolution of dSph and BCGs and compared the predictions of the models to the abundance ratios observed in Damped Lyman alpha Systems (DLAs). The main conclusions are: i) the observed distribution of [alpha/Fe] vs. [Fe/H] in dSph is mainly a result of the SF rate coupled with the wind efficiency; ii) a low SF efficiency and a high wind efficiency are required to reproduce the observational data for dSph; iii) the low gas content of these galaxies is the result of the combined action of gas consumption by SF and gas removal by galactic winds; iv) the BCGs abundance ratios are reproduced by models with 2 to 7 bursts of SF with low efficiencies ; v) the low values of N/O observed in BCGs are the natural result of a bursting SF; vi) a connection between dSph and BCGs in an unified evolutionary scenario is unlikely; vii) the models for the dSph and BCGs imply different formation scenarios for the DLAs; viii) a suitable amount of primary N produced in massive stars can be perhaps an explanation for the low plateau in the [N/$\\alpha$] distribution observed in DLAs, if real.

Gustavo A. Lanfranchi; Francesca Matteucci

2003-06-23T23:59:59.000Z

346

Conservation potential of compact fluorescent lamps in India and Brazil  

SciTech Connect

We evaluate the conservation potential of compact fluorescent lamps (CFLs) for managing the rapidly increasing electrical energy and peak demand in India and Brazil. Using very conservative assumptions, we find that the cost of conserved energy using 16 W CFLs is 4 and 6 times less than the long range marginal cost of electricity for the two countries. The cost of avoided peak installed capacity is 6 and 9.5 times less than the cost of new installed capacity for India and Brazil. The analysis is undertaken from the three separate perspectives of the national economies, the consumers, and the utilities. We find that because residential electricity is subsidized, the consumers have little or no incentive to purchase and install the CFLs, unless they too are subsidized. However, the benefits of CFL installation to the utility are so large that subsidizing them is a paying proposition for the utility are so large that subsidizing them is a paying proposition for the utility in almost all cases. As an illustration of a gradual introduction strategy for CFLs, we calculate a scenario where national savings of the order of US $1.2 million per day for India and US $2.5 million per day for Brazil are reached in 10 years by a small and gradual transfer of subsidy from residential electricity to CFLs. We then explore the barriers to immediate large scale introduction of these lamps in the two countries. Specific technical and marketing problems are identified and discussed, which would require solution before such an introduction can be attempted. Lastly, we discuss the range of policy instruments, in addition to a subsidy scheme, that can be used for promoting the diffusion of these lamps in the domestic and commercial sector. 47 refs., 15 figs., 2 tabs.

Gadgil, A.; Martino Jannuzzi, G. de (Lawrence Berkeley Lab., CA (USA); Universidade Estadual de Campinas, SP (Brazil). Faculdade de Engenharia)

1989-07-01T23:59:59.000Z

347

Compact biocompatible quantum dots via RAFT-mediated synthesis of imidazole-based random copolymer ligand  

E-Print Network (OSTI)

We present a new class of polymeric ligands for quantum dot (QD) water solubilization to yield biocompatible and derivatizable QDs with compact size (10?12 nm diameter), high quantum yields (>50%), excellent stability ...

Liu, Wenhao

348

Wigner transform and pseudodifferential operators on symmetric spaces of non-compact type  

E-Print Network (OSTI)

We obtain a general expression for a Wigner transform (Wigner function) on symmetric spaces of non-compact type and study the Weyl calculus of pseudodifferential operators on them.

S. Twareque Ali; Miroslav Englis

2011-01-16T23:59:59.000Z

349

Rock compressibility, compaction, and subsidence in a high-porosity Chalk Reservoir  

SciTech Connect

A case study of the North Sea Valhall chalk reservoir demonstrates the significant impact that rock compressibility can have on field performance. Porosity reduction, reservoir interval compaction, and seabed subsidence have been observed in conjunction with reservoir pressure depletion. Full-diameter samples from a recently cut core of the unconsolidated high-porosity chalk were subjected to a series of uniaxial-strain experiments to determine compaction and PV compressibility. The laboratory measurements were corrected to field stress rates and pressure, and porosity-dependent rock-compressibility curves were developed. The uniaxial compaction data were used both in a reservoir model to recognize the significant additional reservoir energy resulting from the lithic drive of large-scale rock compaction and in a subsidence model to predict the impact of reservoir depletion on seabed displacements.

Ruddy, I. (Amoco Norway Oil Co. (US)); Andersen, M.A.; Pattillo, P.D.; Bishiawi, M. (Amoco Production Co., Tulsa, OK (USA)); Foged, N. (Danish Geotechnical Inst. (US))

1989-07-01T23:59:59.000Z

350

Discharge characteristics and dynamics of compressive plasma streams generated by a compact magnetoplasma compressor  

SciTech Connect

Results from experimental studies of a compact magnetoplasma compressor designed for operation with heavy gases are presented. The integral characteristics of the discharge and the energy contents and other parameters of the generated xenon plasma streams are determined.

Garkusha, I. E.; Tereshin, V. I.; Chebotarev, V. V.; Solyakov, D. G.; Petrov, Yu. V.; Ladygina, M. S.; Marchenko, A. K.; Staltsov, V. V.; Yelisyeyev, D. V. [National Academy of Sciences of Ukraine, Institute of Plasma Physics, National Science Center 'Kharkiv Institute of Physics and Technology,' (Ukraine)

2011-11-15T23:59:59.000Z

351

Midwest Interstate Compact on Low-Level Radioactive Waste (Multiple States)  

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

The Midwest Interstate Low-Level Radioactive Waste Compact is an agreement between the states of Indiana, Iowa, Minnesota, Missouri, Ohio, and Wisconsin that provides for the cooperative and safe...

352

JOURNAL OF MATERIALS SCIENCE LETTERS 17 (1998) 17231725 Computer simulation of powder compaction of spherical particles  

E-Print Network (OSTI)

in material industries. A good example is the compaction of ceramic or metallic powders to make green com- cles. However, as most metallic and ceramic powder systems used in industry are polydispersed and can

Ekere, Ndy

353

An ultra-compact and efficient Li-ion battery charger circuit for biomedical applications  

E-Print Network (OSTI)

This paper describes an ultra-compact analog lithium-ion (Li-ion) battery charger for wirelessly powered implantable medical devices. The charger presented here takes advantage of the tanh output current profile of an ...

Do Valle, Bruno Guimaraes

354

Growth of compaction bands: A new deformation mode for porous rock  

SciTech Connect

Compaction bands are thin, tabular zones of grain breakage and reduced porosity that are found in sandstones. These structures may form due to tectonic stresses or as a result of local stresses induced during production of fluids from wells, resulting in barriers to fluid (oil, gas, water) movement in sandstone reservoirs. To gain insight into the formation of compaction bands the authors have produced them in the laboratory. Acoustic emission locations were used to define and track the thickness of compaction bands throughout the stress history during axisymmetric compression experiments. Narrow zones of intense acoustic emission, demarcating the boundaries between the uncompacted and compacted regions were found to develop. Unexpectedly, these boundaries moved at velocities related to the fractional porosity reduction across the boundary and to the imposed specimen compression stress. This appears to be a previously unrecognized, fundamental mode of deformation of a porous, granular material subjected to compressive loading with significant implications for the production of hydrocarbons.

OLSSON,WILLIAM A.; HOLCOMB,DAVID J.

2000-03-14T23:59:59.000Z

355

Improving the dynamic hierarchical compact clustering algorithm by using feature selection  

Science Conference Proceedings (OSTI)

Feature selection has improved the performance of text clustering. In this paper, a local feature selection technique is incorporated in the dynamic hierarchical compact clustering algorithm to speed up the computation of similarities. We also present ...

Reynaldo Gil-Garca; Aurora Pons-Porrata

2010-11-01T23:59:59.000Z

356

A Compact Propagation Delay Model for Deep-Submicron CMOS Gates including Crosstalk  

Science Conference Proceedings (OSTI)

We present a compact, fully physical, analytical model for the propagation delay and the output transition time of deep-submicron CMOS gates. The model accounts for crosstalk effects, short-circuit currents, the input-output coupling capacitance and ...

J. L. Rossell; J. Segura

2004-02-01T23:59:59.000Z

357

Searches for Gravitational Waves from Compact Binary Coalescences with the LIGO and Virgo Detectors  

Science Conference Proceedings (OSTI)

Among the most promising sources of gravitational waves for ground?based detectors are the signals emitted during the coalescence of compact binary systems containing neutron stars or black holes. In recent years

F. Marion; The LIGO Scientific Collaboration; The Virgo Collaboration

2010-01-01T23:59:59.000Z

358

CompactCities : analyzing the urban spatial structure in cities with growth restrictions  

E-Print Network (OSTI)

A compact city form is one that espouses high intensity development within a restrictive geographic area. Its perceived benefits include (a) saving agricultural land (b) inducing shorter commute trips, thus less consumption ...

Oberoi, Amit

2005-01-01T23:59:59.000Z

359

A homogenization approach to the yield strength of spherical powder compacts  

SciTech Connect

Optimal external estimates of the macroscopic strength criteria of a hexagonal array of identical spherical grains, under isostatic and closed die compaction, have been obtained through the use of the kinematic approach of the yield design homogenization method. Two appropriate unit cells, one for each stage compaction (I and II), and eight relevant failure mechanisms are considered. For comparison purposes, numerical simulations based on FEA similar to those of Ogbana and Fleck [1] have also been carried out. The shapes and sizes of the macroscopic yield surfaces are determined at various stages of compaction and it has been found in particular that they depend upon the loading history as well as the relative density of the compact.

Benabbes, A.; Siad, L. [URCA/GRESPI, Universite de Reims, UFR SEN, B.P. 1039, 51687 Reims cedex 2 (France); Dormieux, L. [LMSGC, Ponts ParisTech, cite Descartes, Champs-sur-Marne, F-77455 (France); Liu, W. K. [Northwestern University, DME, Evanston (United States) and SKKU (Korea, Republic of)

2010-06-15T23:59:59.000Z

360

A lattice with larger momentum compaction for the NLC main damping rings  

E-Print Network (OSTI)

The dynamic aperture of the lattice is probably sufficient,Collider Damping Ring Lattices, PAC01, p.3795. [2] A.LBNL-52579 A LATTICE WITH LARGER MOMENTUM COMPACTION FOR THE

Wolski, Andrzej; Raubenheimer, Tor O.; Woodley, Mark; Wu, Juhao

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Design of a compact high-output monochromatic x-ray source for radiography applications  

Science Conference Proceedings (OSTI)

The distinct advantages of monochromatic x rays in medical imaging, especially in computed tomography (CT) and radiography with contrast agents (e.g. angiography), provide a great incentive for developing compact sources of monochromatic, or nearly monochromatic, ...

Tigran Bacarian / F. A. Dilmanian

2003-01-01T23:59:59.000Z

362

Design of compact intermediate heat exchangers for gas cooled fast reactors  

E-Print Network (OSTI)

Two aspects of an intermediate heat exchanger (IHX) for GFR service have been investigated: (1) the intrinsic characteristics of the proposed compact printed circuit heat exchanger (PCHE); and (2) a specific design optimizing ...

Gezelius, Knut, 1978-

2004-01-01T23:59:59.000Z

363

Design of a compact, lightweight, and low-cost solar concentrator  

E-Print Network (OSTI)

The objective of this mechanical design project was to improve the current design of large and heavy solar concentrators. The three main design goals were: making the system compact, making the system lightweight, and ...

Gonzlez, Gabriel J. (Gabriel Joe), 1980-

2004-01-01T23:59:59.000Z

364

Summary report. Low-level radioactive waste management activities in the states and compacts. Volume 4, No. 2  

Science Conference Proceedings (OSTI)

`Low-Level Radioactive Waste Management Activities in the States and Compacts` is a supplement to `LLW Notes` and is distributed periodically by Afton Associates, Inc. to state, compact and federal officials that receive `LLW Notes`. The Low-Level Radioactive Waste Forum (LLW Forum) is an association of state and compact representatives, appointed by governors and compact commissions, established to facilitate state and compact implementation of the Low- Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The LLW Forum provides an opportunity for state and compact officials to share information with one another and to exchange views with officials of federal agencies and other interested parties.

NONE

1996-08-01T23:59:59.000Z

365

Summary report, low-level radioactive waste management activities in the states and compacts. Vol. 4. No. 1  

Science Conference Proceedings (OSTI)

`Low-Level Radioactive Waste Management Activities in the States and Compacts` is a supplement to `LLW Notes` and is distributed periodically by Afton Associates, Inc. to state, compact and federal officials that receive `LLW Notes`. The Low-Level Radioactive Waste Forum (LLW Forum) is an association of state and compact representatives, appointed by governors and compact commissions, established to facilitate state and compact implementation of the Low- Level Radioactive Waste Policy Act of 1980 and the Low-Level Radioactive Waste Policy Amendments Act of 1985 and to promote the objectives of low-level radioactive waste regional compacts. The LLW Forum provides an opportunity for state and compact officials to share information with one another and to exchange views with officials of federal agencies and other interested parties.

NONE

1996-01-01T23:59:59.000Z

366

High strength-high conductivity Cu-Fe composites produced by powder compaction/mechanical reduction  

DOE Patents (OSTI)

A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an ''in-situ'' Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite. 5 figures.

Verhoeven, J.D.; Spitzig, W.A.; Gibson, E.D.; Anderson, I.E.

1991-08-27T23:59:59.000Z

367

Novel Compact Accelerator-Based Neutron and Gamma Sources for Future Detector Calibration  

E-Print Network (OSTI)

Novel ultra-compact, electrically switchable, time-structured/pulsed, ~1-14 MeV-level neutron and photon generators have application embedded into large detector systems, especially calorimeters, for energy and operational calibration. The small sizes are applicable to permanent in-situ deployment, or able to be conveniently inserted into large high energy physics detector systems. For bench- testing of prototypes, or for detector module production testing, these compact n and gamma generators offer advantages.

Jennings, G; Winn, D R

2013-01-01T23:59:59.000Z

368

High strength-high conductivity Cu--Fe composites produced by powder compaction/mechanical reduction  

DOE Patents (OSTI)

A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an "in-situ" Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite.

Verhoeven, John D. (Ames, IA); Spitzig, William A. (Ames, IA); Gibson, Edwin D. (Ames, IA); Anderson, Iver E. (Ames, IA)

1991-08-27T23:59:59.000Z

369

Compression testing of a sintered Ti6Al4V powder compact for biomedical applications  

Science Conference Proceedings (OSTI)

In this study, the compression deformation behavior of a Ti6Al4V powder compact, prepared by the sintering of cold compacted atomized spherical particles (100-200 {mu}m) and containing 36-38% porosity, was investigated at quasi-static (1.6x10{sup -3}-1.6x10{sup -1} s{sup -1}) and high strain rates (300 and 900 s{sup -1}) using, respectively, conventional mechanical testing and Split Hopkinson Pressure Bar techniques. Microscopic studies of as-received powder and sintered powder compact showed that sintering at high temperature (1200 deg. C) and subsequent slow rate of cooling in the furnace changed the microstructure of powder from the acicular alpha ({alpha}) to the Widmanstaetten ({alpha}+{beta}) microstructure. In compression testing, at both quasi-static and high strain rates, the compact failed via shear bands formed along the diagonal axis, 45 deg. to the loading direction. Increasing the strain rate was found to increase both the flow stress and compressive strength of the compact but it did not affect the critical strain for shear localization. Microscopic analyses of failed samples and deformed but not failed samples of the compact further showed that fracture occurred in a ductile (dimpled) mode consisting of void initiation and growth in {alpha} phase and/or at the {alpha}/{beta} interface and macrocracking by void coalescence in the interparticle bond region.

Guden, M. [Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Center for Materials Research, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); E-mail: mustafaguden@iyte.edu.tr; Celik, E. [Materials Science and Engineering Program, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Akar, E. [Department of Mechanical Engineering, Izmir Institute of Technology, Gulbahce Koyu, Urla, Izmir (Turkey); Cetiner, S. [Hipokrat A.S., 407/6 Sok., No:10, Pinarbasi, Izmir (Turkey)

2005-05-15T23:59:59.000Z

370

Compact Fluorescent Plug-In Ballast-in-a-Socket  

Science Conference Proceedings (OSTI)

The primary goal of this program was to develop a ballast system for plug-in CFLs (compact fluorescent lamps) that will directly replace standard metal shell, medium base incandescent lampholders (such as Levition No. 6098) for use with portable lamp fixtures, such as floor, table and desk lamps. A secondary goal was to identify a plug-in CFL that is optimized for use with this ballast. This Plug-in CFL Ballastin-a-Socket system will allow fixture manufacturers to easily manufacture CFL-based high-efficacy portable fixtures that provide residential and commercial consumers with attractive, cost-effective, and energy-efficient fixtures for use wherever portable incandescent fixtures are used today. The advantages of this proposed system over existing CFL solutions are that the fixtures can only be used with high-efficacy CFLs, and they will be more attractive and will have lower life-cycle costs than screw-in or adapter-based CFL retrofit solutions. These features should greatly increase the penetration of CFL's into the North American market. Our work has shown that using integrated circuits it is quite feasible to produce a lamp-fixture ballast of a size comparable to the current Edison-screw 3-way incandescent fixtures. As for price points for BIAS-based fixtures, end-users polled by the Lighting Research Institute at RPI indicated that they would pay as much as an additional $10 for a lamp containing such a ballast. The ballast has been optimized to run with a 26 W amalgam triple biax lamp in the base-down position, yet can accept non-amalgam versions of the lamp. With a few part alterations, the ballast can be produced to support 32 W lamps as well. The ballast uses GE's existing L-Comp[1] power topology in the circuit so that the integrated circuit design would be a design that could possibly be used by other CFL and EFL products with minor modifications. This gives added value by reducing cost and size of not only the BIAS, but also possibly other integral CFL and future dimmable integral and plug-in versions of the EFL products.

Rebecca Voelker

2001-12-21T23:59:59.000Z

371

Compact cantilever force probe for plasma pressure measurements  

SciTech Connect

A simple, compact cantilever force probe (CFP) has been developed for plasma pressure measurements. It is based on the pull-in phenomenon well known in microelectromechanical-system electrostatic actuators. The probe consists of a thin (25 {mu}m) titanium foil cantilever (38 mm of length and 14 mm of width) and a fixed electrode separated by a 0.75 mm gap. The probe is shielded by brass box and enclosed into boron nitride housing with a 9 mm diameter window for exposing part of cantilever surface to the plasma. When the voltage is applied between the cantilever and the electrode, an attractive electrostatic force is counterbalanced by cantilever restoring spring force. At some threshold (pull-in) voltage the system becomes unstable and the cantilever abruptly pulls toward the fixed electrode until breakdown occurs between them. The threshold voltage is sensitive to an additional externally applied force, while a simple detection of breakdown occurrence can be used to measure that threshold voltage value. The sensitivity to externally applied forces obtained during calibration is 0.28 V/{mu}N (17.8 V/Pa for pressure). However, the resolution of the measurements is {+-}0.014 mN ({+-}0.22 Pa) due to the statistical scattering in measured pull-in voltages. The diagnostic temporal resolution is {approx}10 ms, being determined by the dynamics of pull-in process. The probe has been tested in the tokamak ISTTOK edge plasma, and a plasma force of {approx}0.07 mN (plasma pressure {approx}1.1 Pa) has been obtained near the leading edge of the limiter. This value is in a reasonable agreement with the estimations using local plasma parameters measured by electrical probes. The use of the described CFP is limited by a heat flux of Q{approx}10{sup 6} W/m{sup 2} due to uncontrollable rise of the cantilever temperature ({delta}T{approx}20 deg. C) during CFP response time.

Nedzelskiy, I. S.; Silva, C.; Fernandes, H.; Duarte, P.; Varandas, C. A. F. [Centro de FuSao Nuclear, Instituto Superior Tecnico, Associacao EURATOM/IST, Av. Rovisco Pais, 1049-001 Lisbon (Portugal)

2007-12-15T23:59:59.000Z

372

AGR-1 Fuel Compact 6-3-2 Post-Irradiation Examination Results  

Science Conference Proceedings (OSTI)

Destructive post-irradiation examination was performed on fuel Compact 6-3-2, which was irradiated in the AGR-1 experiment to a final compact average burnup of 11.3% FIMA and a time-average, volume-average temperature of 1070C. The analysis of this compact was focused on characterizing the extent of fission product release from the particles and examining particles to determine the condition of the kernels and coating layers. The work included deconsolidation of the compact and leach-burn-leach analysis, visual inspection and gamma counting of individual particles, measurement of fuel burnup by several methods, metallurgical preparation of selected particles, and examination of particle cross-sections with optical microscopy. A single particle with a defective SiC layer was identified during deconsolidation-leach-burn-leach analysis, which is in agreement with previous measurements showing elevated cesium in the Capsule 6 graphite fuel holder associated with this fuel compact. The fraction of the compact europium inventory released from the particles and retained in the matrix was relatively high (approximately 6E-3), indicating release from intact particle coatings. The Ag-110m inventory in individual particles exhibited a very broad distribution, with some particles retaining =80% of the predicted inventory and others retaining less than 25%. The average degree of Ag-110m retention in 60 gamma counted particles was approximately 50%. This elevated silver release is in agreement with analysis of silver on the Capsule 6 components, which indicated an average release of 38% of the Capsule 6 inventory from the fuel compacts. In spite of the relatively high degree of silver release from the particles, virtually none of the Ag-110m released was found in the compact matrix, and presumably migrated out of the compact and was deposited on the irradiation capsule components. Release of all other fission products from the particles appears to be less than a single particle equivalent inventory. Burnup measurements based on gamma spectrometry of individual particles and mass spectrometry of dissolved fuel kernels were in very good agreement (11.0% and 10.9% FIMA, respectively), and were also in good agreement with measurements based on previous gamma spectrometry measurements of the whole compact (11.0% FIMA) and the predicted burnup based on physics simulations of the AGR-1 irradiation (11.3% FIMA).

Paul demkowicz; jason Harp; Scott Ploger

2012-12-01T23:59:59.000Z

373

Deepwater Gulf of Mexico turbidites -- Compaction effects on porosity and permeability  

SciTech Connect

The deepwater Gulf of Mexico is now a major area of activity for the US oil industry. Compaction causes particular concern because most prospective deepwater reservoirs are highly geo-pressured and many have limited aquifer support; water injection may also be problematic. To address some of the issues associated with compaction, the authors initiated a special core-analysis program to study compaction effects on turbidite sand porosity and permeability specifically. This program also addressed a number of subsidiary but no less important issues, such as sample characterization and quality, sample preparation, and test procedures. These issues are particularly pertinent, because Gulf of Mexico turbidites are generally unconsolidated, loose sands, and are thus susceptible to a whole array of potentially serious core-disturbing processes. One key result of the special core analysis program is that turbidite compressibilities exhibit large variations in both magnitude and stress dependence. These variations correlate with creep response in the laboratory measurements. The effects of compaction on permeability are significant. To eliminate complicating effects caused by fines movement, the authors made oil flow measurements at initial water saturation. The measurements indicate compaction reduces permeability four to five times more than porosity on a relative basis.

Ostermeier, R.M.

1995-06-01T23:59:59.000Z

374

MiniMAX: A Compact, Portable X-Ray System For Field Inspection  

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

MiniMAX: A Compact, Portable X-Ray System For Field Inspection MiniMAX: A Compact, Portable X-Ray System For Field Inspection MiniMAX: A Compact, Portable X-Ray System For Field Inspection MiniMAX takes x-ray images that are as detailed or even better than conventional hospital systems. However, unlike such systems, MiniMAX is easy to use, portable, lightweight, and inexpensive. MiniMAX takes advantage of the form factor of x-ray film, the physics of computed radiography (CR), and the compact technology of digital radiography (DR) panels to implement the benefits of each in a very simple, reliable, and compact system. July 11, 2013 Complete , 6.5lb, MiniMAX portable radiography system including Leica M9 camera, Jenoptik lens, JDSU dichroic filter, LED flash, CsBr storage phosphor, and 57-Co source. Complete, 6.5lb, MiniMAX portable radiography system including Leica M9

375

Cap plasticity models and compactive and dilatant pre-failure deformation  

SciTech Connect

At low mean stresses, porous geomaterials fail by shear localization, and at higher mean stresses, they undergo strain-hardening behavior. Cap plasticity models attempt to model this behavior using a pressure-dependent shear yield and/or shear limit-state envelope with a hardening or hardening/softening elliptical end cap to define pore collapse. While these traditional models describe compactive yield and ultimate shear failure, difficulties arise when the behavior involves a transition from compactive to dilatant deformation that occurs before the shear failure or limit-state shear stress is reached. In this work, a continuous surface cap plasticity model is used to predict compactive and dilatant pre-failure deformation. During loading the stress point can pass freely through the critical state point separating compactive from dilatant deformation. The predicted volumetric strain goes from compactive to dilatant without the use of a non-associated flow rule. The new model is stable in that Drucker's stability postulates are satisfied. The study has applications to several geosystems of current engineering interest (oil and gas reservoirs, nuclear waste repositories, buried targets, and depleted reservoirs for possible use for subsurface sequestration of greenhouse gases).

FOSSUM,ARLO F.; FREDRICH,JOANNE T.

2000-02-17T23:59:59.000Z

376

EPRI Transmission Line Reference Book: 115-345 kV Compact Line Design, The Blue Book  

Science Conference Proceedings (OSTI)

This report is an updated edition of the industry standard on overhead line compaction, the EPRI Transmission Line Reference Book: 115-138 kV Compact Line Design, commonly known as the "Blue Book," which was last published in 1978. Publication of this new edition is the culmination of three years of research by a team of experts in the field. The report includes the latest information on research, technology, materials, and utility experience with compact lines.

2008-11-05T23:59:59.000Z

377

Strategy for Updating EPRI's Transmission Line Reference Book: 115-138-kV Compact Line Design ("The Blue Book")  

Science Conference Proceedings (OSTI)

EPRI is sponsoring development of a new, updated edition of the Transmission Line Reference Book: 115-138 kV Compact Line Design, commonly known as the "Blue Book," which was originally published in 1978. The new edition will provide the most up-to-date technical information and practices on the design and maintenance of compact overhead lines. It will enable energy companies to construct cost-effective compact lines that produce optimal performances and to address the ability to maintain compact lines w...

2006-10-30T23:59:59.000Z

378

The National Compact Stellarator Experiment at the Princeton Plasma Physics Laboratory  

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

Finding of No Significant Impact Finding of No Significant Impact Proposed National Compact Stellarator Experiment Princeton Plasma Physics Laboratory, New Jersey AGENCY: U.S. Department of Energy ACTION: Finding of No Significant Impact SUMMARY: The Department of Energy (DOE) has prepared an Environmental Assessment (EA), DOE/EA-1437, evaluating the environmental effects of the proposed fabrication, assembly and operation of a National Compact Stellarator Experiment (NCSX) within the existing C- Stellarator (CS) Building at C-Site of the Princeton Plasma Physics Laboratory (PPPL), Princeton, New Jersey. The purpose of the NCSX is to provide an experimental device to investigate the attractiveness of a compact stellarator as the basis for a fusion power reactor. Fusion energy has the potential to help compensate for dwindling supplies of fossil fuels, the

379

Measure Guideline: Implementing a Plenum Truss for a Compact Air Distribution System  

SciTech Connect

This Measure Guideline presents the steps to implement a compact duct system inside an attic bulkhead (plenum truss) of a one-story, slab-on-grade (SOG) home. In a compact duct design, ductwork runs are reduced in length to yield a smaller and more compact duct system. Less energy will be lost through ductwork if the ducts are contained within the thermal enclosure of the house. These measures are intended for the production builder working to meet the 2012 International Energy Conservation Code (IECC) requirements and keep the ductwork within the thermal enclosure of the house. This measure of bringing the heating, ventilation and air conditioning (HVAC) equipment and ductwork within the thermal enclosure of the house is appropriate for the builder wishing to avoid cathedralizing the insulation in the attic space (i.e., locating it at the underside of the roof deck rather than along the attic floor) or adding dropped soffits.

Burdick, A.

2013-10-01T23:59:59.000Z

380

Scaling of Macroscopic Properties of Porous Sediments Experiencing Compaction: Implications for Geothermal Gradient and Methane Inventory  

E-Print Network (OSTI)

Porous sediments in geological systems experience stress by the above-laying mass and consequent compaction, which may be significantly nonuniform across the massif. We derive scaling laws for the compaction of sediments of similar geological origin. With these laws, we evaluate the dependence of the transport properties of a fluid-saturated porous medium (permeability, effective molecular diffusivity, hydrodynamic dispersion, and thermal conductivity) on its porosity. In particular, we demonstrate irrelevance of the assumption of a uniform geothermal gradient for systems with nonuniform compaction and importance of the derived scaling laws for mathematical modelling of methane hydrate deposits, which are believed to have potential for impact on global climate change and Glacial-Interglacial cycles.

Goldobin, Denis S

2011-01-01T23:59:59.000Z

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


381

The fate of high redshift massive compact galaxies in dense environments  

SciTech Connect

Massive compact galaxies seem to be more common at high redshift than in the local universe, especially in denser environments. To investigate the fate of such massive galaxies identified at z {approx} 2 we analyse the evolution of their properties in three cosmological hydrodynamical simulations that form virialized galaxy groups of mass {approx} 10{sup 13} M{sub {circle_dot}} hosting a central massive elliptical/S0 galaxy by redshift zero. We find that at redshift {approx} 2 the population of galaxies with M{sub *} > 2 x 10{sup 10} M{sub {circle_dot}} is diverse in terms of mass, velocity dispersion, star formation and effective radius, containing both very compact and relatively extended objects. In each simulation all the compact satellite galaxies have merged into the central galaxy by redshift 0 (with the exception of one simulation where one of such satellite galaxy survives). Satellites of similar mass at z = 0 are all less compact than their high redshift counterparts. They form later than the galaxies in the z = 2 sample and enter the group potential at z < 1, when dynamical friction times are longer than the Hubble time. Also, by z = 0 the central galaxies have increased substantially their characteristic radius via a combination of in situ star formation and mergers. Hence in a group environment descendants of compact galaxies either evolve towards larger sizes or they disappear before the present time as a result of the environment in which they evolve. Since the group-sized halos that we consider are representative of dense environments in the {Lambda}CDM cosmology, we conclude that the majority of high redshift compact massive galaxies do not survive until today as a result of the environment.

Kaufmann, Tobias; /Zurich, ETH; Mayer, Lucio; /Zurich U.; Carollo, Marcella; /Zurich, ETH; Feldmann, Robert; /Fermilab /Chicago U., KICP

2012-01-01T23:59:59.000Z

382

Defective insulators in live working on a 550kV compact steel lattice tower  

Science Conference Proceedings (OSTI)

Research was conducted to determine the minimum number of healthy insulator units needed to ensure worker safety in live working on a compact 550 kV steel lattice tower. A large variety of worksite conditions was investigated. Test results confirm the conservative nature of the CIGRE formula for defective insulator units, and modifications to the formula are suggested. The recommended number of healthy units is 12 in a string of 24 units for the case of live work on the compact 550 kV tower, when the Portable Protective Gap (PPG) is used. Adjustment for altitude should be made above 900 m (3,000 ft).

Gela, G. [EPRI Power Delivery Center, Lenox, MA (United States); Kientz, H. [Western Area Power Administration, Golden, CO (United States); Fox, H.J. Jr. [Public Service Electric and Gas, Bridgewater, NJ (United States); Mitchell, J.D. [Alabama Power Co., Birmingham, AL (United States); Lyons, P.F. [EPRI, Haslet, TX (United States)

1997-04-01T23:59:59.000Z

383

Attenuation of dilute aromatic hydrocarbon transport by a block copolymer in a compacted vertisol  

E-Print Network (OSTI)

Municipal solid waste landfills in the United States are built with a composite bottom liner consisting of a flexible membrane liner of high-density polyethylene overlying a compacted soil liner. Hydrocarbons have been shown to pass through the flexible membrane liner by diffusion. Flexible membrane liners often have flaws allowing direct contact between the leachate and the compacted soil liner. The transmission of hydrocarbons to the compacted soil liner presents a threat to groundwater supplies. The study was performed to determine if the modification of a compacted soil liner with a thermoplastic elastomer block copolymer could successfully sequester benzene, toluene, ethylbenzene, and xylenes and meet the United States Environmental Protection Agency's saturated hydraulic conductivity requirement of 1x10?? cm sec?. Compacted Ships clay modified with 0, 1, 3, 5, and 10% weight of a thermoplastic elastomer block copolymer was tested for saturated hydraulic conductivity using 10.2 cm fixed wall permeameters. The compacted Ships clay met the United States Environmental Protection Agency's mandated saturated hydraulic conductivity of 10?? cm sec? at polymer contents of 3% (wt) polymer or less. The presence of dissolved aromatic hydrocarbons had no effect on the saturated hydraulic conductivity. The ability of the polymer to attenuate the transport of dilute aromatic hydrocarbons was tested by permeating the compacted soil/polymer treatments with a 0.01N CaSO4 solution contaminated with benzene, toluene, ethylbenzene, and xylenes. Leachate from permeameters packed with soil containing more than 1% (wt) polymer had BTEX concentrations below the drinking water standard for 3 or more pore volumes. The findings of this research were applied to a hypothetical compacted soil liner constructed with Ships clay modified to include 3% (wt) polymer and having a saturated hydraulic conductivity of 4.23 x 10?? cm sec?. It was assumed that the soil liner was in direct contact with landfill leachate. The hypothetical liner would protect the groundwater from contamination above the maximum contamination limit for drinking water by benzene for 350 years, toluene for 140 years, and ethylbenzene for 260 years.

Akin, James Browning

2001-01-01T23:59:59.000Z

384

A model reduction approach for constructing compact dynamic thermal models of IGBT-modules of inverters  

Science Conference Proceedings (OSTI)

This paper presents a model reduction approach for constructing lumped RC thermal networks of IGBT-modules of inverters for which heat and subsequent temperature increases vary with time on different scales ranging from nanosecond to second. It was observed ... Keywords: Compact thermal modelling, Electro-thermal simulation, IGBT-modules, Inverters, Thermal analysis

J. Antonios; N. Ginot; C. Batard; Y. Scudeller; M. Machmoum

2012-06-01T23:59:59.000Z

385

Orbit, optics and chromaticity correction for PS2 negative momentum compaction lattices  

SciTech Connect

The effect of magnet misalignments in the beam orbit and linear optics functions are reviewed and correction schemes are applied to the negative momentum compaction lattice of PS2. Chromaticity correction schemes are also proposed and tested with respect to off-momentum optics properties. The impact of the correction schemes in the dynamic aperture of the lattice is finally evaluated.

Papaphilippou,Y.; Barranco, J.; Bartmann, W.; Benedikt, M.; Carli, C.; de Maria, R.; Peggs, S.; Trbojevic, D.

2009-05-04T23:59:59.000Z

386

Compact fluorescent lamp using horizontal and vertical insulating septums and convective venting geometry  

DOE Patents (OSTI)

A novel design is described for a compact fluorescent lamp, including a lamp geometry which will increase light output and efficacy of the lamp in a base down operating position by providing horizontal and vertical insulating septums positioned in the ballast compartment of the lamp to provide a cooler coldspot. Selective convective venting provides additional cooling of the ballast compartment. 9 figs.

Siminovitch, M.

1998-02-10T23:59:59.000Z

387

A compact generator based on Tesla transformer and water pulsed forming line for POS application  

Science Conference Proceedings (OSTI)

A compact generator based on Tesla transformer for application in plasma opening switch has been developed. This system will be used to produce microwave for plasma-microwave interaction studies. Overall dimension of this system is 6 feet by 4 feet. ...

Rajesh Kumar; Jignesh Patel; V. P. Anitha; Anurag Shyam

2011-02-01T23:59:59.000Z

388

Spectral compact difference hybrid computation of passive scalar in isotropic turbulence  

Science Conference Proceedings (OSTI)

An accurate and efficient hybrid numerical method is developed for direct numerical simulation of passive scalar in homogeneous turbulence for the Schmidt number 1 and 50. The hybrid method uses the standard Fourier spectral method for the incompressible ... Keywords: Combined compact difference, Direct numerical simulation, Hybrid method, Passive scalar, Turbulence

T. Gotoh; S. Hatanaka; H. Miura

2012-08-01T23:59:59.000Z

389

Compact quasi-analytic equations for estimating the temperature distribution of ULSI interconnections  

Science Conference Proceedings (OSTI)

With the wide application of low dielectric constant materials in ULSI circuits, the problem of heat dissipation becomes more critical due to the small thermal conductivity of such materials. Compact quasi-analytic equations for estimating the temperature ... Keywords: ULSI circuits, interconnection, thermal behavior simulation

X. Xiao; X. You; G. Ruan

2002-04-01T23:59:59.000Z

390

Compaction die for forming a solid annulus on a right circular cylinder. [Patent application  

DOE Patents (OSTI)

A compacting die is disclosed wherein the improvement comprises providing a screen in the die cavity, the screen being positioned parallel to the side walls of said die and dividing the die cavity into center and annular compartments. In addition, the use of this die in a method for producing an annular clad ceramic fuel material is disclosed.

Harlow, J.L.

1981-09-14T23:59:59.000Z

391

Compact microwave lamp having a tuning block and a dielectric located in a lamp cavity  

DOE Patents (OSTI)

A microwave lamp having a compact structure utilizing a coupling slot which has a dielectric member extending therethrough and a tuning block adjoining the coupling slot. A non-conventional waveguide is used which has about the width of a WR-284 waveguide and about the length of a WR-340 waveguide.

Simpson, James E. (Gaithersburg, MD)

2000-01-01T23:59:59.000Z

392

Simulation analysis of data processing activities in Compact Muon Solenoid physics  

Science Conference Proceedings (OSTI)

The scale, complexity and worldwide geographical spread of the Large Hadron Collider (LHC) computing and data analysis problems are unprecedented in scientific research. The complexity of processing and accessing this data is increased substantially ... Keywords: Compact Muon Solenoid, large-scale distributed systems, simulation model

Ciprian Dobre

2012-12-01T23:59:59.000Z

393

Compact formulas for guiding-center orbits in axisymmetric tokamak geometry  

Science Conference Proceedings (OSTI)

Compact formulas for trapped-particle and passing-particle guiding-center orbits in axisymmetric tokamak geometry are given in terms of the Jacobi elliptic functions and complete elliptic integrals. These formulas can find applications in bounce-center kinetic theory as well as guiding-center Fokker-Planck kinetic theory.

Brizard, Alain J. [Department of Chemistry and Physics, Saint Michael's College Colchester, Vermont 05439 (United States)

2011-02-15T23:59:59.000Z

394

Uhlenbeck compactness and transversality for the moduli space of PU(2) monopoles  

E-Print Network (OSTI)

This research announcement gives a brief report of the main results in our paper "PU(2) monopoles, I: Regularity, Uhlenbeck compactness, and transversality" (Journal of Differential Geometry, to appear). We describe the existence of perturbations for the PU(2) monopole equations, yielding both useful transversality properties and an Uhlenbeck compactification for this perturbed moduli space.

Paul M. N. Feehan; Thomas G. Leness

1997-10-12T23:59:59.000Z

395

A Compact Advanced Burning Plasma Experiment Dale M. Meade and Robert D. Woolley  

E-Print Network (OSTI)

A Compact Advanced Burning Plasma Experiment Dale M. Meade and Robert D. Woolley Princeton Plasma and optimization of a burning plasma. The achievement of an ignited (Q # 10) plasma will allow these scientific OBJECTIVES AND REQUIREMENTS FOR AN ADVANCED BURNING PLASMA PHYSICS EXPERIMENT The primary physics objectives

396

A Compact Advanced Burning Plasma Experiment Dale M. Meade and Robert D. Woolley  

E-Print Network (OSTI)

A Compact Advanced Burning Plasma Experiment Dale M. Meade and Robert D. Woolley Princeton Plasma and optimization of a burning plasma. The achievement of an ignited (Q 10) plasma will allow these scientific OBJECTIVES AND REQUIREMENTS FOR AN ADVANCED BURNING PLASMA PHYSICS EXPERIMENT The primary physics objectives

397

Effect of superficial insulation on roller-compacted concrete dams in cold regions  

Science Conference Proceedings (OSTI)

Superficial insulation is often used to prevent cracking of concrete dams located in cold regions. In this study, surface temperatures with and without heat insulation during the overwintering period are calculated. Using the material properties of roller-compacted ... Keywords: Superficial crack, Superficial insulation, Temperature difference, Temperature field, Thermal stress, Three-dimensional finite element relocating mesh method

Xiao-fei Zhang; Shou-yi Li; Yan-long Li; Yao Ge; Hui Li

2011-11-01T23:59:59.000Z

398

Compact Dielectric Wall Accelerator Development For Intensity Modulated Proton Therapy And Homeland Security Applications  

Science Conference Proceedings (OSTI)

Compact dielectric wall (DWA) accelerator technology is being developed at the Lawrence Livermore National Laboratory. The DWA accelerator uses fast switched high voltage transmission lines to generate pulsed electric fields on the inside of a high gradient insulating (HGI) acceleration tube. Its high electric field gradients are achieved by the use of alternating insulators and conductors and short pulse times. The DWA concept can be applied to accelerate charge particle beams with any charge to mass ratio and energy. Based on the DWA system, a novel compact proton therapy accelerator is being developed. This proton therapy system will produce individual pulses that can be varied in intensity, energy and spot width. The system will be capable of being sited in a conventional linac vault and provide intensity modulated rotational therapy. The status of the developmental new technologies that make the compact system possible will be reviewed. These include, high gradient vacuum insulators, solid dielectric materials, SiC photoconductive switches and compact proton sources. Applications of the DWA accelerator to problems in homeland security will also be discussed.

Chen, Y -; Caporaso, G J; Guethlein, G; Sampayan, S; Akana, G; Anaya, R; Blackfield, D; Cook, E; Falabella, S; Gower, E; Harris, J; Hawkins, S; Hickman, B; Holmes, C; Horner, A; Nelson, S; Paul, A; Pearson, D; Poole, B; Richardson, R; Sanders, D; Stanley, J; Sullivan, J; Wang, L; Watson, J; Weir, J

2009-06-17T23:59:59.000Z

399

Compact fluorescent lamp using horizontal and vertical insulating septums and convective venting geometry  

SciTech Connect

A novel design for a compact fluorescent lamp, including a lamp geometry which will increase light output and efficacy of the lamp in a base down operating position by providing horizontal and vertical insulating septums positioned in the ballast compartment of the lamp to provide a cooler coldspot. Selective convective venting provides additional cooling of the ballast compartment.

Siminovitch, Michael (El Sobrante, CA)

1998-01-01T23:59:59.000Z

400

Summary report: Low-level radioactive waste management activities in the states and compacts, Volume 5, Number 1  

Science Conference Proceedings (OSTI)

Information is given on the ten compacts and their host state, describing the governing body, member states, date established, current waste management, and siting, licensing, and projected date of a disposal facility. Reports are also given on the eight states that remain unaffiliated with a compact commission.

Norris, C. [ed.

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Summary report: Low-level radioactive waste management activities in the states and compacts, Volume 5, Number 2  

Science Conference Proceedings (OSTI)

Information is given on the ten compacts and their host state, describing the governing body, member states, date established, current waste management, and siting, licensing, and projected date of a disposal facility. Reports are also given on the eight states that remain unaffiliated with a compact commission.

Norris, C. [ed.

1997-07-01T23:59:59.000Z

402

Potential Environmental Impacts from the Metals in Incandescent, Compact Fluorescent Lamp (CFL), and Light-Emitting Diode (LED)  

E-Print Network (OSTI)

), and Light-Emitting Diode (LED) Bulbs Seong-Rin Lim, Daniel Kang, Oladele A. Ogunseitan,,§ and Julie M sources with compact fluorescent lamp (CFL) and light-emitting diode (LED) bulbs that use about 70% and 85 lighting systems are transitioning from incandes- cent to compact fluorescent lamp (CFL) and light

Short, Daniel

403

Modeling Hot Mix Asphalt Compaction Using a Thermodynamics Based Compressible Viscoelastic Model within the Framework of Multiple Natural Configurations  

E-Print Network (OSTI)

Hot mix asphalt (HMA) is a composite material that exhibits a nonlinear response that is dependent on temperature, type of loading and strain level. The properties of HMA are highly influenced by the type and amount of the constituents used and also depend on its internal structure. In such a material the variable effects of the compaction process assume a central importance in determining material performance. It is generally accepted that the theoretical knowledge about material behavior during compaction is limited and it is therefore hard to predict and manage (the effect of) a compaction process. This work makes an attempt to address such a specific need by developing a continuum model that can be adapted for simulating the compaction of hot mix asphalt (HMA) using the notion of multiple natural configurations. A thermodynamic framework is employed to study the non-linear dissipative response associated with HMA by specifying the forms for the stored energy and the rate of dissipation function for the material; a viscoelastic compressible fluid model is developed using this framework to model the compaction of hot mix asphalt. It is further anticipated that the present work will aid in the development of better constitutive models capable of capturing the mechanics of processes like compaction both in the laboratory and in the field. The continuum model developed was implemented in the finite element method, which was employed to setup a simulation environment for hot mix asphalt compaction. The finite element method was used for simulating compaction in the laboratory and in various field compaction projects.

Koneru, Saradhi

2010-08-01T23:59:59.000Z

404

Compact AdS space, Brane geometry and the AdS/CFT correspondence  

E-Print Network (OSTI)

The AdS/CFT correspondence can be realized in spaces that are globally different but share the same asymptotic behavior. Two known cases are: a compact AdS space and the space generated by a large number of coincident branes. We discuss the physical consistency, in the sense of the Cauchy problem, of these two formulations. We show that the role of the boundary in the compact AdS space is equivalent to that of the flat asymptotic region in the brane space. We also show, by introducing a second coordinate chart for the pure AdS space, that a point at its spatial infinity corresponds to a horizon in the brane system.

Boschi-Filho, H; Boschi-Filho, Henrique; Braga, Nelson R. F.

2002-01-01T23:59:59.000Z

405

Passive compact molten salt reactor (PCMSR), modular thermal breeder reactor with totally passive safety system  

Science Conference Proceedings (OSTI)

Design Study Passive Compact Molten Salt Reactor (PCMSR) with totally passive safety system has been performed. The term of Compact in the PCMSR name means that the reactor system is designed to have relatively small volume per unit power output by using modular and integral concept. In term of modular, the reactor system consists of three modules, i.e. reactor module, turbine module and fuel management module. The reactor module is an integral design that consists of reactor, primary and intermediate heat exchangers and passive post shutdown cooling system. The turbine module is an integral design of a multi heating, multi cooling, regenerative gas turbine. The fuel management module consists of all equipments related to fuel preparation, fuel reprocessing and radioactive handling. The preliminary calculations show that the PCMSR has negative temperature and void reactivity coefficient, passive shutdown characteristic related to fuel pump failure and possibility of using natural circulation for post shutdown cooling system.

Harto, Andang Widi [Engineering Physics Department, Faculty of Engineering, Gadjah Mada University (Indonesia)

2012-06-06T23:59:59.000Z

406

Hierarchical Structure Formation and Modes of Star Formation in Hickson Compact Group 31  

E-Print Network (OSTI)

The handful of low-mass, late-type galaxies that comprise Hickson Compact Group 31 is in the midst of complex, ongoing gravitational interactions, evocative of the process of hierarchical structure formation at higher redshifts. With sensitive, multicolor Hubble Space Telescope imaging, we characterize the large population of <10 Myr old star clusters that suffuse the system. From the colors and luminosities of the young star clusters, we find that the galaxies in HCG 31 follow the same universal scaling relations as actively star-forming galaxies in the local Universe despite the unusual compact group environment. Furthermore, the specific frequency of the globular cluster system is consistent with the low end of galaxies of comparable masses locally. This, combined with the large mass of neutral hydrogen and tight constraints on the amount of intragroup light, indicate that the group is undergoing its first epoch of interaction-induced star formation. In both the main galaxies and the tidal-dwarf candida...

Gallagher, S C; Elmegreen, D M; Chandar, R; English, J; Charlton, J C; Gronwall, C; Young, J; Tzanavaris, P; Johnson, K E; de Oliveira, C Mendes; Whitmore, B; Hornschemeier, A E; Maybhate, A; Zabludoff, Ann

2010-01-01T23:59:59.000Z

407

New microtextural criterion for differentiation of compaction and early cementation in fine-grained limestones  

SciTech Connect

Mechanisms of porosity reduction in fine-grained limestones (micrites), the most abundant type of limestone, have been difficult to evaluate because of the fine crystal sizes. Scanning electron microscopy reveals common minute voids termed microfenestrae ({approximately} 1.5-40{mu}m diameter) in Holocene lime muds from all marine carbonate environments studied. Experimental compaction of lime muds greatly reduces abundance of microfenestrae at pressures less than 10 bar. Thus, the abundance of cement-filled microfenestrae in micrites appears to be a widely applicable criterion for recognition of the extent of cementation prior to significant compaction in any given micrite. Microfenestrae in most Phanerozoic micrites studied are about as common as in Holocene lime muds, suggesting that early cementation is a more important mechanism in micrite porosity reduction than recent views have suggested.

Lasemi, Z.; Boardman, M.R. (Miami Univ., Oxford OH (USA)); Sandberg, P.A. (Univ. of Illinois, Urbana (USA))

1990-04-01T23:59:59.000Z

408

Physical processes of compaction companion report 1 to simulation of geothermal subsidence  

DOE Green Energy (OSTI)

There are a variety of theories, techniques, and parameters in the subsidence literature. Biot's theory, Terzaghi's theory, and the theory of interacting continua (TINC) are used to explain solid-fluid interaction; stress-strain theories range from linear elastic to e-log p to plasticity and pore-collapse theories. Parameters are numerous: void ratio,, permeability, compaction coefficient, pore compressibility, Young's modulus, bulk modulus, shear modulus, Poisson's ratio, Lame coefficients, coefficient of consolidation, and storage coefficient. The physical processes which govern compaction and deformation in geothermal systems are reviewed. The review is an attempt to provide a reasonably coherent general structure for the theories and parameters which were referred to above. The materials presented is a compendium of existing published work.

Miller, I.; Dershowitz, W.; Jones, K.; Myer, L.; Roman, K.; Schauer, M.

1980-03-01T23:59:59.000Z

409

High-reflectivity Cr/Sc multilayer condenser for compact soft x-ray microscopy  

Science Conference Proceedings (OSTI)

The condenser is a critical component in compact water-window x-ray microscopes as it influences the exposure time via its efficiency and the resolution via its numerical aperture. Normal-incidence multilayer mirrors can reach large geometrical collection efficiencies and match the numerical aperture of the zone plate but require advanced processing for high total reflectivity. In the present article we demonstrate large-diameter normal-incidence spherical Cr/Sc multilayer condensers with high and uniform reflectivity. Dc-magnetron sputtering was used to deposit 300 bilayers of Cr/Sc with a predetermined d-spacing matching the {lambda}=3.374 nm operating wavelength on spherical substrates. The mirrors show a uniform reflectivity of {approx}3% over the full 58 mm diameter condenser area. With these mirrors an improvement in exposure time by a factor of 10 was achieved, thereby improving the performance of the compact x-ray microscope significantly.

Stollberg, H.; Yulin, S.; Takman, P. A. C.; Hertz, H. M. [Biomedical and X-Ray Physics, Department of Applied Physics, KTH-AlbaNova, 10691 Stockholm (Sweden); Fraunhofer-Institut fur Angewandte Optik und Feinmechanik, Albert-Einstein-Strasse 7, 07745 Jena (Germany); Biomedical and X-Ray Physics, Department of Applied Physics, KTH-AlbaNova, 10691 Stockholm (Sweden)

2006-12-15T23:59:59.000Z

410

DESIGN AND LAYOUT CONCEPTS FOR COMPACT, FACTORY-PRODUCED, TRANSPORTABLE, GENERATION IV REACTOR SYSTEMS  

SciTech Connect

The purpose of this research project is to develop compact (100 to 400 MWe) Generation IV nuclear power plant design and layout concepts that maximize the benefits of factory-based fabrication and optimal packaging, transportation and siting. The reactor concepts selected were compact designs under development in the 2000 to 2001 period. This interdisciplinary project was comprised of three university-led nuclear engineering teams identified by reactor coolant type (water, gas, and liquid metal) and a fourth Industrial Engineering team. The reactors included a Modular Pebble Bed helium-cooled concept being developed at MIT, the IRIS water-cooled concept being developed by a team led by Westinghouse Electric Company, and a Lead-Bismuth-cooled concept developed by UT. In addition to the design and layout concepts this report includes a section on heat exchanger manufacturing simulations and a section on construction and cost impacts of proposed modular designs.

Mynatt Fred R.; Townsend, L.W.; Williamson, Martin; Williams, Wesley; Miller, Laurence W.; Khan, M. Khurram; McConn, Joe; Kadak, Andrew C.; Berte, Marc V.; Sawhney, Rapinder; Fife, Jacob; Sedler, Todd L.; Conway, Larry E.; Felde, Dave K.

2003-11-12T23:59:59.000Z

411

Compact high-flux two-stage solar collectors based on tailored edge-ray concentrators  

SciTech Connect

The recently-invented tailored edge-ray concentrator (TERC) approach permits the design of compact two-stage high-flux solar collectors, with a focusing primary reflector and a non-imaging TERC secondary reflector. We present a new primary reflector shape based on the TERC approach and a secondary TERC tailored to its particular flux map, such that more compact concentrators emerge at flux concentration levels in excess of 90% of the thermodynamic limit. Calculations and raytrace simulation results are also offered which demonstrate that V-cone approximations to a wide variety of TERCs attain the concentration of the TERC to within a few percent. These V-cones represent practical secondary concentrators that may be superior to corresponding compound parabolic concentrator or trumpet secondaries. 13 refs., 5 figs., 2 tabs.

Friedman, R.P. [Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel); Gordon, J.M. [Ben-Gurion Univ. of the Negev, Sede Boqer Campus (Israel)]|[Ben-Gurion Univ. of the Negev, Beersheva (Israel); Ries, H. [Paul Scherrer Inst., Villigen (Switzerland)

1996-06-01T23:59:59.000Z

412

Compact Reflective Imaging Spectrometer Design Utilizing An Immersed Grating And Anamorphic Mirror  

DOE Patents (OSTI)

A compact imaging spectrometer comprising an entrance slit, an anamorphic mirror, a grating, and a detector array. The entrance slit directs light to the anamorphic mirror. The anamorphic mirror receives the light and directs the light to the grating. The grating receives the light from the anamorphic mirror and defracts the light back onto the anamorphic mirror. The anamorphic mirror focuses the light onto a detector array.

Lerner, Scott A. (Corvalis, OR)

2006-01-10T23:59:59.000Z

413

Plasma-enhanced gasification of low-grade coals for compact power plants  

Science Conference Proceedings (OSTI)

A high temperature of a steam torch ensures an efficient gasification of low-grade coals, which is comparable to that of high-grade coals. Therefore, the coal gasification system energized by microwaves can serve as a moderately sized power plant due to its compact and lightweight design. This plasma power plant of low-grade coals would be useful in rural or sparsely populated areas without access to a national power grid.

Uhm, Han S. [Department of Electrophysics, Kwangwoon University, 447-1 Wolgye-Dong, Nowon-Gu, Seoul 139-701 (Korea, Republic of); Hong, Yong C.; Shin, Dong H.; Lee, Bong J. [Convergence Plasma Research Center, National Fusion Research Institute, 113 Gwahangno, Yuseong-Gu, Daejeon 305-333 (Korea, Republic of)

2011-10-15T23:59:59.000Z

414

Stabilization of solutions of quasilinear second order parabolic equations in domains with non-compact boundaries  

SciTech Connect

The first mixed problem with homogeneous Dirichlet boundary condition and initial function with compact support is considered for quasilinear second order parabolic equations in a cylindrical domain D=(0,{infinity})x{Omega}. Upper bounds are obtained, which give the rate of decay of the solutions as t{yields}{infinity} as a function of the geometry of the unbounded domain {Omega} subset of R{sub n}, n{>=}2. Bibliography: 18 titles.

Karimov, Ruslan Kh [Institute of Applied Research, Sterlitamak (Russian Federation); Kozhevnikova, Larisa M [Sterlitamak State Pedagogical Academy, Sterlitamak (Russian Federation)

2010-11-11T23:59:59.000Z

415

A compact electron cyclotron resonance proton source for the Paul Scherrer Institute's proton accelerator facility  

SciTech Connect

A compact electron cyclotron resonance proton source has been developed and installed recently at thePaul Scherrer Institute's high intensity proton accelerator. Operation at the ion source test stand and the accelerator demonstrates a high reliability and stability of the new source. When operated at a 10 - 12 mA net proton current the lifetime of the source exceeds 2000 h. The essential development steps towards the observed performance are described.

Baumgarten, C.; Barchetti, A.; Einenkel, H.; Goetz, D.; Schmelzbach, P. A. [Paul Scherrer Institute (Switzerland)

2011-05-15T23:59:59.000Z

416

Mime: compact, low power 3D gesture sensing for interaction with head mounted displays  

Science Conference Proceedings (OSTI)

We present Mime, a compact, low-power 3D sensor for unencumbered free-form, single-handed gestural interaction with head-mounted displays (HMDs). Mime introduces a real-time signal processing framework that combines a novel three-pixel time-of-flight ... Keywords: 3d sensing, gesture sensing, glasses, hand tracking, head mounted displays, mobile, time-of- flight imaging

Andrea Colao, Ahmed Kirmani, Hye Soo Yang, Nan-Wei Gong, Chris Schmandt, Vivek K. Goyal

2013-10-01T23:59:59.000Z

417

Scalar and fermionic vacuum currents in de Sitter spacetime with compact dimensions  

E-Print Network (OSTI)

Vacuum expectation values (VEVs) of the current densities for charged scalar and Dirac spinor fields are investigated in (D+1)-dimensional de Sitter (dS) spacetime with toroidally compactified spatial dimensions. Along compact dimensions we impose quasiperiodicity conditions with arbitrary phases. In addition, the presence of a classical constant gauge field is assumed. The VEVs of the charge density and of the components for the current density along noncompact dimensions vanish. The gauge field leads to Aharonov-Bohm-like oscillations of the components along compact dimensions as functions of the magnetic flux. For small values of the comoving length of a compact dimension, compared with the dS curvature scale, the current density is related to the corresponding current in the Minkowski spacetime by a conformal relation. For large values of the comoving length and for a scalar field, depending on the mass of the field, two different regimes are realized with the monotonic and oscillatory damping of the current density. For a massive spinor field, the decay of the current density is always oscillatory. In supersymmetric models on the background of Minkowski spacetime with equal number of scalar and fermionic degrees of freedom and with the same phases in the periodicity conditions, the total current density vanishes due to the cancellation between the scalar and fermionic parts. The background gravitational field modifies the current densities for scalar and fermionic fields in different ways and for massive fields there is no cancellation in the dS spacetime.

S. Bellucci; A. A. Saharian; H. A. Nersisyan

2013-02-07T23:59:59.000Z

418

The merger history, AGN and dwarf galaxies of Hickson Compact Group 59  

E-Print Network (OSTI)

Compact group galaxies often appear unaffected by their unusually dense environment. Closer examination can, however, reveal the subtle, cumulative effects of multiple galaxy interactions. Hickson Compact Group (HCG) 59 is an excellent example of this situation. We present a photometric study of this group in the optical (HST), infrared (Spitzer) and X-ray (Chandra) regimes aimed at characterizing the star formation and nuclear activity in its constituent galaxies and intra-group medium. We associate five dwarf galaxies with the group and update the velocity dispersion, leading to an increase in the dynamical mass of the group of up to a factor of 10 (to 2.8e13 Msun), and a subsequent revision of its evolutionary stage. Star formation is proceeding at a level consistent with the morphological types of the four main galaxies, of which two are star-forming and the other two quiescent. Unlike in some other compact groups, star-forming complexes across HCG 59 closely follow mass-radius scaling relations typical o...

Konstantopoulos, I S; Fedotov, K; Durrell, P R; Tzanavaris, P; Hill, A R; Zabludoff, A I; Maier, M L; Elmegreen, D M; Charlton, J C; Johnson, K E; Brandt, W N; Walker, L M; Eracleous, M; Maybhate, A; Gronwall, C; English, J; Hornschemeier, A E; Mulchaey, J S

2011-01-01T23:59:59.000Z

419

Data Compilation for AGR-1 Variant 3 Compact Lot LEU01-49T-Z  

SciTech Connect

This document is a compilation of characterization data for the AGR-1 vriant 3 fuel compact lot LEU01-49T-Z. The compacts were produced by ORNL for the Advanced Gas Reactor Fuel Development and Qualification (AGR) program for the first AGR irradiation test train (AGR-1). This compact lot was fabricated using particle composite LEU01-49T, which was a composite of three batches of TRISO-coated 350 {micro}m diameter 19.7% low enrichment uranium oxide/uranium carbide kernels (LEUCO). The AGR-1 TRISO-coated particles consist of a spherical kernel coated with an {approx} 50% dense carbon buffer layer (100 {micro}m nominal thickness), followed by a dense inner pyrocarbon layer (40 {micro}m nominal thickness), followed by a SiC layer (35 {micro}m nominal thickness), followed by another dense outer pyrocarbon layer (40 {micro}m nominal thickness). The kernels were obtained from BWXT and identified as composite G73D-20-69302. The BWXT kernel lot G73D-20-69302 was riffled into sublots for characterization and coating by ORNL and identified as LEU01-?? (where ?? is a series of integers beginning with 01). A data compilation for the AGR-1 variant 3 coated particle composite LEU01-49t CAN BE FOUND IN ornl/tm-2006/022.

Hunn, John D [ORNL; Montgomery, Fred C [ORNL; Pappano, Peter J [ORNL

2006-08-01T23:59:59.000Z

420

Gravitational Radiation from Post-Newtonian Sources and Inspiralling Compact Binaries  

E-Print Network (OSTI)

To be observed and analyzed by the network of gravitational wave detectors on ground (LIGO, VIRGO, etc.) and by the future detectors in space (LISA, etc.), inspiralling compact binaries --- binary star systems composed of neutron stars and/or black holes in their late stage of evolution --- require high-accuracy templates predicted by general relativity theory. The gravitational waves emitted by these very relativistic systems can be accurately modelled using a high-order post-Newtonian gravitational wave generation formalism. In this article, we present the current state of the art on post-Newtonian methods as applied to the dynamics and gravitational radiation of general matter sources (including the radiation reaction back onto the source) and inspiralling compact binaries. We describe the post-Newtonian equations of motion, pay attention to the self-field regularizations at work, discuss several notions of innermost circular orbits, estimate the accuracy of the approximation and make a comparison with numerical gravitational self-force computations. The gravitational waveform and energy flux are obtained with high post-Newtonian precision. Some landmark results are discussed in the case of eccentric compact binaries moving on quasi-elliptical orbits, and on spin-orbit coupling effects in black hole binaries.

Luc Blanchet

2013-10-06T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Role of Compaction Ratio in the Mathematical Model of Progressive Collapse  

E-Print Network (OSTI)

We derive a mathematical model of progressive collapse and examine role of compaction. Contrary to a previous result by Ba\\v{z}ant and Verdure, J. Engr. Mech. ASCE 133 (2006) 308, we find that compaction slows down the avalanche by effectively increasing the resistive force. We compare currently available estimates of the resistive force, that of Ba\\v{z}ant and Verdure (2006) corrected for compaction for World Trade Center (WTC) 2, and of Beck, www.arxiv.org:physics/0609105, for WTC 1 and 2. We concentrate on a damage wave propagating through the building before the avalanche that figures in both models: an implicit heat wave that reduces the resistive force of the building by 60% in Ba\\v{z}ant and Verdure (2006), or a wave of massive destruction that reduces the resistive force by 75% in Beck (2006). We show that the avalanche cannot supply the energy to the heat wave as this increases the resistive force by two orders of magnitude. We thus reaffirm the conclusion of Beck (2006) that the avalanche is initiat...

Beck, Charles M

2008-01-01T23:59:59.000Z

422

An Ultra-Compact Marx-Type High-Voltage Generator  

DOE Green Energy (OSTI)

This paper discusses the design of an ultra-compact, Marx-type, high-voltage generator. This system incorporates high-performance components that are closely coupled and integrated into an extremely compact assembly. Low profile, custom ceramic capacitors with coplanar extended electrodes provide primary energy storage. Low-inductance, spark-gap switches incorporate miniature gas cavities imbedded within the central region of the annular shaped capacitors, with very thin dielectric sections separating the energy storage capacitors. Carefully shaped electrodes and insulator surfaces are used throughout to minimize field enhancements, reduce fields at triple-point regions, and enable operation at stress levels closer to the intrinsic breakdown limits of the dielectric materials. Specially shaped resistors and inductors are used for charging and isolation during operation. Forward-coupling ceramic capacitors are connected across successive switch-capacitor-switch stages to assist in switching. Pressurized SF, gas is used for electrical insulation in the spark-gap switches and throughout the unit. The pressure housing is constructed entirely of dielectric materials, with segments that interlock with the low-profile switch bodies to provide an integrated support structure for all of the components. This ultra-compact Marx generator employs a modular design that can be sized as needed for a particular application. Units have been assembled with 4, 10, and 30 stages and operated at levels up to 100 kV per stage.

Goerz, D; Ferriera, T; Nelson, D; Speer, R; Wilson, M

2001-06-15T23:59:59.000Z

423

Data Compilation for AGR-1 Baseline Compact Lot LEU01-46T-Z  

SciTech Connect

This document is a compilation of characterization data for the AGR-1 baseline compact lot LEU01-46T-Z. The compacts were produced by ORNL for the Advanced Gas Reactor Fuel Development and Qualification (AGR) program for the first AGR irradiation test train (AGR-1). This compact lot was fabricated using particle composite LEU01-46T, which was a composite of four batches of TRISO-coated 350 {micro}m diameter 19.7% low enrichment uranium oxide/uranium carbide kernels (LEUCO). The AGR-1 TRISO-coated particles consist of a spherical kernel coated with an {approx} 50% dense carbon buffer layer (100 {micro}m nominal thickness), followed by a dense inner pyrocarbon layer (40 {micro}m nominal thickness), followed by a SiC layer (35 {micro}m nominal thickness), followed by another dense outer pyrocarbon layer (40 {micro}m nominal thickness). The kernels were obtained from BWXT and identified as composite G73D-20-69302. The BWXT kernel lot G73D-20-69302 was riffled into sublots for characterization and coating by ORNL and identified as LEU01-?? (where ?? is a series of integers beginning with 01). A data compilation for the AGR-1 baseline coated particle composite LEU01-46T can be found in ORNL/TM-2006/019. The AGR-1 Fuel product Specification and Characterization Guidance (INL EDF-4380) provides the requirements necessary for acceptance of the fuel manufactured for the AGR-1 irradiation test. Section 6.2 of EDF-4380 provides the property requirements for the heat treated compacts. The Statistical Sampling Plan for AGR Fuel materials (INL EDF-4542) provides additional guidance regarding statistical methods for product acceptance and recommended sample sizes. The procedures for characterizing and qualifying the compacts are outlined in ORNL product inspection plan AGR-CHAR-PIP-05. the inspection report forms generated by this product inspection plan document the product acceptance for the property requirements listed in section 6.2 of EDF-4380.

Hunn, John D [ORNL; Montgomery, Fred C [ORNL; Pappano, Peter J [ORNL

2006-08-01T23:59:59.000Z

424

Data Compilation for AGR-1 Variant 1 Compact Lot LEU01-47T-Z  

SciTech Connect

This document is a compilation of characterization data for the AGR-1 variant 1 compact lot LEU01-47T-Z. The compacts were produced by ORNL for the ADvanced Gas Reactor Fuel Development and Qualification (AGR) program for the first AGR irradiation test train (AGR-1). This compact lot was fabricated using particle composite LEU01-47T, which was a composite of three batches of TRISO-coated 350 {micro}m diameter 19.7% low enrichment uranium oxide/uranium carbide kernels (LEUCO). The AGR-1 TRISO-coated particles consist of a spherical kernel coated with an {approx} 50% dense carbon buffer layer (100 {micro}m nominal thickness), followed by a dense inner pyrocarbon layer (40 {micro}m nominal thickness), followed by a SiC layer (35 {micro}m nominal thickness), followed by another dense outer pyrcoarbon layer (40 {micro}m nominal thickness). The kernels were obtained from BWXT and identified as composite G73D-20-69302. The BWXT kernel lot G73D-20-69302 was riffled into sublots for characterization and coating by ORNL and identified at LEU01-?? (where ?? is a series of integers beginning with 01). A data compilation for the AGR-1 variant 1 coated particle composite LEU01-47T can be found in ORNL/TM-2006/020. The AGR-1 Fuel Product Specification and Characterization Guidance (INL EDF-4380) provides the requirements necessary for acceptance of the fuel manufactured for the AGR-1 irradiation test. Section 6.2 of EDF-4380 provides the property requirements for the heat treated compacts. The Statistical Sampling Plan for AGR Fuel Materials (INL EDF-4542) provides additional guidance regarding statistical methods for product acceptance and recommended sample sizes. The procedures for characterizing and qualifying the compacts are outlined in ORNL product inspection plan AGR-CHAR-PIP-05. The inspection report forms generated by this product inspection plan document the product acceptance for the property requirements listed in section 6.2 of EDF-4380.

Hunn, John D [ORNL; Montgomery, Fred C [ORNL; Pappano, Peter J [ORNL

2006-08-01T23:59:59.000Z

425

Data Compilation for AGR-1 Variant 2 Compact Lot LEU01-48T-Z  

SciTech Connect

This document is a compilation of characterization data for the AGR-1 variant 2 compact lot LEU01-48T-Z. The compacts were produced by ORNL for the Advanced Gas Reactor Fuel Development and Qualification (AGR) program for the first AGR irradiation test train (AGR-1). This compact lot was fabricated using particle composite LEU01-48T, which was a composite of three batches of TRISO-coated 350 {micro}m diameter 19.7% low enrichment uranium oxide/uranium carbide kernels (LEUCO). The AGR-1 TRISO-coated particles consist of a spherical kernel coated with an {approx} 50% dense carbon buffer layer (100 {micro}m nominal thickness), followed by a dense inner pyrocarbon layer (40 {micro}m nominal thickness), followed by a SiC layer (35 {micro}m nominal thickness), followed by another dense outer pyrocarbon layer (40 {micro}m nominal thickness). The kernels were obtained from BWXT and identified as composite G73D-20-69302. The BWXT kernel lot G73D-20-69302 was riffled into sublots for characterization and coating by ORNL and identified as LEU01-?? (where ?? is a series of integers beginning with 01). A data compilation for the AGR-1 variant 2 coated particle composite LEU01-48T can be found in ORNL/TM-2006/021. The AGR-1 Fuel Product Specification and Characterization Guidance (INL EDF-4380) provides the requirements necessary for acceptance of the fuel manufactured for the AGR-1 irradiation test. Section 6.2 of EDF-4380 provides the property requirements for the heat treated compacts. The Statistical Sampling Plan for AGR Fuel materials (INL EDF-4542) provides additional guidance regarding statistical methods for product acceptance and recommended sample sizes. The procedures for characterizing and qualifying the compacts are outlined in ORNL product inspection plan AGR-CHAR-PIP-05. The inspection report forms generated by this product inspection plan document the product acceptance for the property requirements listed in section 6.2 of EDF-4380.

Hunn, John D [ORNL; Montgomery, Fred C [ORNL; Pappano, Peter J [ORNL

2006-08-01T23:59:59.000Z

426

The Application of Compact Discs (CD-ROM) in the Atmospheric Sciences and Related Fields: An Update  

Science Conference Proceedings (OSTI)

This paper describes the current application of compact discs (CD-ROM) to the storage and distribution of datasets for atmospheric sciences and related disciplines. CD-ROM technology is reviewed, currently available discs are listed, and a look ...

Clifford F. Mass

1993-10-01T23:59:59.000Z

427

Gravitomagnetic effects in compact binary systems : a study of spin-enhanced orbits around Kerr black holes  

E-Print Network (OSTI)

An important subject in current gravity research concerns the evolution of compact binary systems in which both members spin, particularly in the extreme mass ratio limit. Previous research has suggested that the effect ...

Kansagra, Akash Pravin, 1983-

2004-01-01T23:59:59.000Z

428

Presented at the Low Impact Development Roundtable Conference, Baltimore, MD, July 2001. Infiltration Through Compacted Urban Soils and  

E-Print Network (OSTI)

. Infiltration Through Compacted Urban Soils and Effects on Biofiltration Design Robert Pitt,1 Shen-En Chen,2.................................................................................................................................................4 Soil Modifications to Enhance Infiltration...........................................6 Disturbed Urban Soil Field Infiltration Measurements

Pitt, Robert E.

429

Ice Cloud Retrievals and Analysis with the Compact Scanning Submillimeter Imaging Radiometer and the Cloud Radar System during CRYSTAL FACE  

Science Conference Proceedings (OSTI)

Submillimeter-wave radiometry is a new technique for determining ice water path (IWP) and particle size in upper-tropospheric ice clouds. The first brightness temperatures images of ice clouds above 340 GHz were measured by the Compact Scanning ...

K. Franklin Evans; James R. Wang; Paul E. Racette; Gerald Heymsfield; Lihua Li

2005-06-01T23:59:59.000Z

430

A Study on the Synoptic-Dynamical Characteristics of Compact Tropical Cyclones in the Western North Pacific  

Science Conference Proceedings (OSTI)

This study focuses on the synoptic and dynamical characteristic of compact and incompact tropical cyclones (TCs) in the western North Pacific. To identify the distinct mechanisms related to the development and maintenance of these two categories ...

Delia Yen-Chu Chen; Kevin K. W. Cheung; Cheng-Shang Lee

2012-12-01T23:59:59.000Z

431

COMPACTING BIOMASS AND MUNICIPAL SOLID WASTES TO FORM AND UPGRADED FUEL  

DOE Green Energy (OSTI)

Biomass waste materials exist in large quantity in every city and in numerous industrial plants such as wood processing plants and waste paper collection centers. Through minimum processing, such waste materials can be turned into a solid fuel for combustion at existing coal-fired power plants. Use of such biomass fuel reduces the amount of coal used, and hence reduces the greenhouse effect and global warming, while at the same time it reduces the use of land for landfill and the associated problems. The carbon-dioxide resulting from burning biomass fuel is recycled through plant growth and hence does not contribute to global warming. Biomass fuel also contains little sulfur and hence does not contribute to acid rain problems. Notwithstanding the environmental desirability of using biomass waste materials, not much of them are used currently due to the need to densify the waste materials and the high cost of conventional methods of densification such as pelletizing and briquetting. The purpose of this project was to test a unique new method of biomass densification developed from recent research in coal log pipeline (CLP). The new method can produce large agglomerates of biomass materials called ''biomass logs'' which are more than 100 times larger and 30% denser than conventional ''pellets'' or ''briquettes''. The Phase I project was to perform extensive laboratory tests and an economic analysis to determine the technical and economic feasibility of the biomass log fuel (BLF). A variety of biomass waste materials, including wood processing residues such as sawdust, mulch and chips of various types of wood, combustibles that are found in municipal solid waste stream such as paper, plastics and textiles, energy crops including willows and switch grass, and yard waste including tree trimmings, fallen leaves, and lawn grass, were tested by using this new compaction technology developed at Capsule Pipeline Research Center (CPRC), University of Missouri-Columbia (MU). The compaction conditions, including compaction pressure, pressure holding time, back pressure, moisture content, particle size and shape, piston and mold geometry and roughness, and binder for the materials were studied and optimized. The properties of the compacted products--biomass logs--were evaluated in terms of physical, mechanical, and combustion characteristics. An economic analysis of this technology for anticipated future commercial operations was performed. It was found that the compaction pressure and the moisture content of the biomass materials are critical for producing high-quality biomass logs. For most biomass materials, dense and strong logs can be produced under room temperature without binder and at a pressure of 70 MPa (10,000 psi), approximately. A few types of the materials tested such as sawdust and grass need a minimum pressure of 100 MPa (15,000 psi) in order to produce good logs. The appropriate moisture range for compacting waste paper into good logs is 5-20%, and the optimum moisture is in the neighborhood of 13%. For the woody materials and yard waste, the appropriate moisture range is narrower: 5-13%, and the optimum is 8-9%. The compacted logs have a dry density of 0.8 to 1.0 g/cm{sup 3}, corresponding to a wet density of 0.9 to 1.1 g/cm{sup 3}, approximately. The logs have high strength and high resistance to impact and abrasion, but are feeble to water and hence need to be protected from water or rain. They also have good long-term performance under normal environmental conditions, and can be stored for a long time without significant deterioration. Such high-density and high-strength logs not only facilitate handling, transportation, and storage, but also increase the energy content of biomass per unit volume. After being transported to power plants and crushed, the biomass logs can be co-fired with coal to generate electricity.

Henry Liu; Yadong Li

2000-11-01T23:59:59.000Z

432

Determination of mercury distribution inside spent compact fluorescent lamps by atomic absorption spectrometry  

Science Conference Proceedings (OSTI)

Highlights: Black-Right-Pointing-Pointer New treatments for CFL are required considering the aim of Directive 202/96/CE. Black-Right-Pointing-Pointer It is shown that most of the mercury introduced into a CFL is in the phosphor powder. Black-Right-Pointing-Pointer Experimental conditions for microwave-assisted sample digestion followed by AAS measurements are described. Black-Right-Pointing-Pointer By washing the glass it is possible to reduce the concentration below legal limits. - Abstract: In this study, spent compact fluorescent lamps were characterized to determine the distribution of mercury. The procedure used in this research allowed mercury to be extracted in the vapor phase, from the phosphor powder, and the glass matrix. Mercury concentration in the three phases was determined by the method known as cold vapor atomic absorption spectrometry. Median values obtained in the study showed that a compact fluorescent lamp contained 24.52 {+-} 0.4 ppb of mercury in the vapor phase, 204.16 {+-} 8.9 ppb of mercury in the phosphor powder, and 18.74 {+-} 0.5 ppb of mercury in the glass matrix. There are differences in mercury concentration between the lamps since the year of manufacture or the hours of operation affect both mercury content and its distribution. The 85.76% of the mercury introduced into a compact fluorescent lamp becomes a component of the phosphor powder, while more than 13.66% is diffused through the glass matrix. By washing and eliminating all phosphor powder attached to the glass surface it is possible to classified the glass as a non-hazardous waste.

Rey-Raap, Natalia [Departamento de Ingenieria Mecanica y Construccion, Universitat Jaume I de Castellon, Av. de Vicent Sos Baynat s/n, 12071 Castellon de la Plana, Espana (Spain); Gallardo, Antonio, E-mail: gallardo@emc.uji.es [Departamento de Ingenieria Mecanica y Construccion, Universitat Jaume I de Castellon, Av. de Vicent Sos Baynat s/n, 12071 Castellon de la Plana, Espana (Spain)

2012-05-15T23:59:59.000Z

433

THE MERGER HISTORY, ACTIVE GALACTIC NUCLEUS, AND DWARF GALAXIES OF HICKSON COMPACT GROUP 59  

Science Conference Proceedings (OSTI)

Compact group galaxies often appear unaffected by their unusually dense environment. Closer examination can, however, reveal the subtle, cumulative effects of multiple galaxy interactions. Hickson Compact Group (HCG) 59 is an excellent example of this situation. We present a photometric study of this group in the optical (Hubble Space Telescope), infrared (Spitzer), and X-ray (Chandra) regimes aimed at characterizing the star formation and nuclear activity in its constituent galaxies and intra-group medium. We associate five dwarf galaxies with the group and update the velocity dispersion, leading to an increase in the dynamical mass of the group of up to a factor of 10 (to 2.8 Multiplication-Sign 10{sup 13} M{sub Sun }), and a subsequent revision of its evolutionary stage. Star formation is proceeding at a level consistent with the morphological types of the four main galaxies, of which two are star-forming and the other are two quiescent. Unlike in some other compact groups, star-forming complexes across HCG 59 closely follow mass-radius scaling relations typical of nearby galaxies. In contrast, the ancient globular cluster populations in galaxies HCG 59A and B show intriguing irregularities, and two extragalactic H II regions are found just west of B. We age-date a faint stellar stream in the intra-group medium at {approx}1 Gyr to examine recent interactions. We detect a likely low-luminosity active galactic nucleus in HCG 59A by its {approx}10{sup 40} erg s{sup -1} X-ray emission; the active nucleus rather than star formation can account for the UV+IR spectral energy distribution. We discuss the implications of our findings in the context of galaxy evolution in dense environments.

Konstantopoulos, I. S.; Charlton, J. C.; Brandt, W. N.; Eracleous, M.; Gronwall, C. [Department of Astronomy and Astrophysics, The Pennsylvania State University, University Park, PA 16802 (United States); Gallagher, S. C.; Fedotov, K.; Hill, A. R. [Department of Physics and Astronomy, The University of Western Ontario, London, ON N6A 3K7 (Canada); Durrell, P. R. [Department of Physics and Astronomy, Youngstown State University, Youngstown, OH 44555 (United States); Tzanavaris, P.; Hornschemeier, A. E. [Laboratory for X-ray Astrophysics, NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States); Zabludoff, A. I. [Steward Observatory, University of Arizona, Tucson, AZ 85721 (United States); Maier, M. L. [Gemini Observatory, Casilla 603, Colina el Pino S/N, La Serena (Chile); Elmegreen, D. M. [Department of Physics and Astronomy, Vassar College, Poughkeepsie, NY 12604 (United States); Johnson, K. E.; Walker, L. M. [Department of Astronomy, University of Virginia, P. O. Box 400325, Charlottesville, VA 22904 (United States); Maybhate, A. [Space Telescope Science Institute, Baltimore, MD (United States); English, J. [University of Manitoba, Winnipeg, MN (Canada); Mulchaey, J. S., E-mail: iraklis@astro.psu.edu [Carnegie Observatories, Pasadena, CA 91101 (United States)

2012-01-20T23:59:59.000Z

434

Simplified Optimum Sizing and Cost Analysis for Compact heat Exchanger in VHTR  

SciTech Connect

In this study, the optimum size of the compact heat exchanger has been developed based on its weight and pumping power for the reference design of 600 MWt very high temperature gas-cooled reactor (VHTR) system. Alloy 617 was selected as a construction material. The optimum size and a number of configurations for the reference design of the VHTR with an intermediate heat exchanger (IHX) were investigated and our initial calculations indicated that it has an unrealistically too large aspect ratio of the length and height due to its small-sized channels, which might cause manifolding problems and a large number of parallel modules with high thermal stress. The flow area and channel diameter were then adjusted to achieve a smaller aspect ratio in this paper. Achievement of this aspect ratio resulted in higher cost, but the cost increase was less than would have occurred by simply reducing the flow area by itself. The appropriate channel diameter is estimated to be less than 5.00 mm for the reference system. The effect of channel waviness enhanced the compactness and heat transfer performance, but unfavorably increased the aspect ratio. Therefore, the waviness should be carefully determined based on performance and economics. In this study, the waviness of the IHX is recommended to be selected between 1.0 and 2.5. Calculations show that reducing the duty dramatically decreases the aspect ratio, indicating that the compact heat exchanger is easy to be optimally designed for low duty, but many modules are required for high duty operation proportional to the operating power. Finally, the effect of working fluids was investigated, and it reveals that using carbon dioxide instead of helium in the secondary side reduces the size and cost by about 20% due to the lower pumping power in spite of its lower heat transfer capability by a factor of 4.

Chang Oh; E. S. Kim; S. Sherman

2008-10-01T23:59:59.000Z

435

Modelling and Simulation of Tensile Fracture in High Velocity Compacted Metal Powder  

Science Conference Proceedings (OSTI)

In cold uniaxial powder compaction, powder is formed into a desired shape with rigid tools and a die. After pressing, but before sintering, the compacted powder is called green body. A critical property in the metal powder pressing process is the mechanical properties of the green body. Beyond a green body free from defects, desired properties are high strength and uniform density. High velocity compaction (HVC) using a hydraulic operated hammer is a production method to form powder utilizing a shock wave. Pre-alloyed water atomised iron powder has been HVC-formed into circular discs with high densities. The diametral compression test also called the Brazilian disc test is an established method to measure tensile strength in low strength material like e.g. rock, concrete, polymers and ceramics. During the test a thin disc is compressed across the diameter to failure. The compression induces a tensile stress perpendicular to the compressed diameter. In this study the test have been used to study crack initiation and the tensile fracture process of HVC-formed metal powder discs with a relative density of 99%. A fictitious crack model controlled by a stress versus crack-width relationship is utilized to model green body cracking. Tensile strength is used as a failure condition and limits the stress in the fracture interface. The softening rate of the model is obtained from the corresponding rate of the dissipated energy. The deformation of the powder material is modelled with an elastic-plastic Cap model. The characteristics of the tensile fracture development of the central crack in a diametrically loaded specimen is numerically studied with a three dimensional finite element simulation. Results from the finite element simulation of the diametral compression test shows that it is possible to simulate fracturing of HVC-formed powder. Results from the simulation agree reasonably with experiments.

Jonsen, P.; Haeggblad, H.-A. [Division of Solid Mechanics, Department of Applied Physics and Mechanical Engineering, Luleaa University of Technology, 971 87 Luleaa (Sweden)

2007-05-17T23:59:59.000Z

436

THE COUNCIL OF STATE GOVERNMENTS THE ELECTRIC TRANSMISSION LINE SITING COMPACT  

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

COUNCIL OF STATE GOVERNMENTS COUNCIL OF STATE GOVERNMENTS THE ELECTRIC TRANSMISSION LINE SITING COMPACT LEGISLATIVE BRIEFING Background and Summary Background and Need The siting of interstate transmission lines has long been a problem that has vexed both states and the federal government. With the expected growth in electricity demand, coupled with the need to bring renewable energy to market and the necessity to enhance and secure the nation's energy infrastructure, the need for added transmission capacity has never been more apparent. National need and parochial interests, however, often do not align and have led to an underdeveloped and overstressed electricity transmission system.

437

Final Report for Monitoring of Reactor Antineutrinos with Compact Germanium Detectors  

Science Conference Proceedings (OSTI)

This 2008 NCMR project has pursued measurement of the antineutrino-nucleus coherent scattering interaction using a low-energy threshold germanium gamma-ray spectrometer of roughly one-half kilogram total mass. These efforts support development of a compact system for monitoring the antineutrino emission from nuclear reactor cores. Such a monitoring system is relevant to nuclear safeguards and nuclear non-proliferation in general by adding a strong method for assuring quantitative material balance of special nuclear material in the nuclear fuel cycle used in electricity generation.

Orrell, John L.; Collar, J. I.

2009-07-01T23:59:59.000Z

438

Beam Transport in a Compact Dielectric Wall Accelerator for Proton Therapy  

SciTech Connect

To attain the highest accelerating gradient in the compact dielectric wall (DWA) accelerator, the DWA will be operated in the 'virtual' traveling mode with potentially non-uniform and time-dependent axial accelerating field profiles, especially near the DWA entrance and exit, which makes beam transport challenging. We have established a baseline transport case without using any external lenses. Results of simulations using the 3-D, EM PIC code, LSP indicate that the DWA transport performance meets the medical specifications for proton treatment. Sensitivity of the transport performance to Blumlein block failure will be presented.

Chen, Y; Caporaso, G; Blackfield, D; Nelson, S D; Poole, B

2011-03-16T23:59:59.000Z

439

IRAS 04000+5052: A not so compact, not so metal-poor HII region  

E-Print Network (OSTI)

We present new observations of IRAS 04000+5052, a Galactic HII region associated with a young stellar cluster and possibly located at the Perseus arm. Contrary to previous claims, we have found that this object is not a compact metal-poor HII region. The electron density and chemical composition of the nebula are similar to those of normal HII regions of the Galactic disk. The radial velocity of the ionized gas coincides with that obtained from CO observations, indicating that the nebula is associated with a molecular cloud. Probably, the ionizing source of the HII region is a Herbig Be star of B0.5 spectral type.

Cesar Esteban; Luis Lopez-Martin; Angel R. Lopez-Sanchez; Bernabe Cedres; Jorge Garcia-Rojas

2004-06-07T23:59:59.000Z

440

IRAS 04000+5052: A not so compact, not so metal-poor HII region  

E-Print Network (OSTI)

We present new observations of IRAS 04000+5052, a Galactic HII region associated with a young stellar cluster and possibly located at the Perseus arm. Contrary to previous claims, we have found that this object is not a compact metal-poor HII region. The electron density and chemical composition of the nebula are similar to those of normal HII regions of the Galactic disk. The radial velocity of the ionized gas coincides with that obtained from CO observations, indicating that the nebula is associated with a molecular cloud. Probably, the ionizing source of the HII region is a Herbig Be star of B0.5 spectral type.

Esteban, C; Lopez-Sanchez, A R; Cedres, B; Garcia-Rojas, J; Esteban, Cesar; Lopez-Martin, Luis; Lopez-Sanchez, Angel R.; Cedres, Bernabe; Garcia-Rojas, Jorge

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

DESIGN OF A COMPACT HEAT EXCHANGER FOR HEAT RECUPERATION FROM A HIGH TEMPERATURE ELECTROLYSIS SYSTEM  

Science Conference Proceedings (OSTI)

Design details of a compact heat exchanger and supporting hardware for heat recuperation in a high-temperature electrolysis application are presented. The recuperative heat exchanger uses a vacuum-brazed plate-fin design and operates between 300 and 800C. It includes corrugated inserts for enhancement of heat transfer coefficients and extended heat transfer surface area. Two recuperative heat exchangers are required per each four-stack electrolysis module. The heat exchangers are mated to a base manifold unit that distributes the inlet and outlet flows to and from the four electrolysis stacks. Results of heat exchanger design calculations and assembly details are also presented.

G. K. Housley; J.E. O'Brien; G.L. Hawkes

2008-11-01T23:59:59.000Z

442

Very compact, high-stability electrostatic actuator featuring contact-free self-limiting displacement  

DOE Patents (OSTI)

A compact electrostatic actuator is disclosed for microelectromechanical (MEM) applications. The actuator utilizes stationary and moveable electrodes, with the stationary electrodes being formed on a substrate and the moveable electrodes being supported above the substrate on a frame. The frame provides a rigid structure which allows the electrostatic actuator to be operated at high voltages (up to 190 Volts) to provide a relatively large actuation force compared to conventional electrostatic comb actuators which are much larger in size. For operation at its maximum displacement, the electrostatic actuator is relatively insensitive to the exact value of the applied voltage and provides a self-limiting displacement.

Rodgers, M. Steven (Albuquerque, NM); Miller, Samuel L. (Albuquerque, NM)

2003-01-01T23:59:59.000Z

443

Curved Spacetime Geometry for Strings and Affine Non-compact Algebras  

E-Print Network (OSTI)

Based on lectures delivered at (1) the AMS meeting at USC, Nov. 1992 (2) Conference on Quantum Aspects of Black Holes, ITP, UC- Santa %Barbara, %%June 1993. (3) 25th Summer Institute, Ecole Normale Superieure, % Paris, Aug. 1992. To appear in "Interface Between Mathematics and Physics", Ed. S.-T. Yau. 1--Itroduction to String Theory in Curved Spacetime 2--G/H Coset Conformal Field Theory and String Theory 3--Time, Space and Classification of Non-Compact Cosets 4--Heterotic Strings in Curved Spacetime as gauged WZW Models 5--The Spacetime Manifold and the Geometry 6--Examples in 2D, 3D and 4D

Bars, Itzhak

1993-01-01T23:59:59.000Z

444

Adaptive non-uniform B-spline dictionaries on a compact interval  

E-Print Network (OSTI)

Non-uniform B-spline dictionaries on a compact interval are discussed. For each given partition, dictionaries of B-spline functions for the corresponding spline space are constructed. It is asserted that, by dividing the given partition into subpartitions and joining together the bases for the concomitant subspaces, slightly redundant dictionaries of B-splines functions are obtained. Such dictionaries are proved to span the spline space associated to the given partition. The proposed construction is shown to be potentially useful for the purpose of sparse signal representation. With that goal in mind, spline spaces specially adapted to produce a sparse representation of a given signal are considered.

Rebollo-Neira, Laura

2009-01-01T23:59:59.000Z

445

Reservoir compaction of the Belridge Diatomite and surface subsidence, south Belridge field, Kern County, California  

SciTech Connect

Surface subsidence due to reservoir compaction during production has been observed in many large oil fields. Subsidence is most obvious in coastal and offshore fields where inundation by the sea occurs. Well-known examples are Wilmington field in California and Ekofisk field in the North Sea. In South Belridge field, the Belridge Diatomite member of the late Miocene Reef Ridge Shale has proven prone to compaction during production. The reservoir, a high-porosity, low-permeability, highly compressive rock composed largely of diatomite and mudstone, is about 1,000 ft thick and lies at an average depth of 1,600 ft. Within the Belridge Diatomite, reservoir compaction due to withdrawal of oil and water in Sec. 12, T28S, R20E, MDB and M, was noticed after casing failures in producing wells began occurring and tension cracks, enlarged by hydrocompaction after a heavy rainstorm were observed. Surface subsidence in Sec. 12 has been monitored since April 1987, through the surveying of benchmark monuments. The average annualized subsidence rate during 1987 was {minus}1.86 ft/yr, {minus}0.92 ft/yr during 1988, and {minus}0.65 ft/yr during 1989; the estimated peak subsidence rate reached {minus}7.50 ft/yr in July 1985, after 1.5 yrs of production from the Belridge Diatomite reservoir. Since production from the Belridge Diatomite reservoir commenced in February 1984, the surface of the 160-ac producing area has subsided about 12.5 ft. This equates to an estimated reservoir compaction of 30 ft in the Belridge Diatomite and an average loss of reservoir porosity of 2.4% from 55.2 to 52.8%. Injection of water for reservoir pressure maintenance in the Belridge diatomite began in June 1987, and has been effective in mitigating subsidence to current rates and repressurizing the reservoir to near-initial pressure. An added benefit of water injection has been improved recovery of oil from the Belridge Diatomite by waterflood.

Bowersox, J.R.; Shore, R.A. (Mission Resources, Inc., Bakersfield, CA (USA))

1990-05-01T23:59:59.000Z

446

A 1.5 GeV compact light source with superconducting bending magnets  

Science Conference Proceedings (OSTI)

This paper describes the design of a compact electron synchrotron light source for producing X-rays for medical imaging, protein crystallography, nano-machining and other uses up to 35 keV. The source will provide synchrotron light from six 6.9 tesla superconducting 60{degree} bending magnet stations. In addition the ring, contains conventional quadrupoles and sextupoles. The light source has a circumference of 26 meters, which permits it to be located in a variety of industrial and medical facilities.

Garren, A.A. [Particle Beam Lasers, Inc., Northridge, CA (United States)]|[Univ. of California, Los Angeles, CA (United States). Center for Advanced Accelerators]|[Lawrence Berkeley Lab., CA (United States). Accelerator and Fusion Research Div.; Cline, D.B.; Kolonko, J.J. [Particle Beam Lasers, Inc., Northridge, CA (United States)]|[Univ. of California, Los Angeles, CA (United States). Center for Advanced Accelerators; Green, M.A. [Lawrence Berkeley Lab., CA (United States). Accelerator and Fusion Research Div.; Johnson, D.E. [Particle Beam Lasers, Inc., Northridge, CA (United States); Leung, E.M.; Madura, D.D. [Martin Marietta Technologies, Inc., Rancho Bernardo, CA (United States)

1995-05-01T23:59:59.000Z

447

Compact Fluorescent Lighting in America: Lessons Learned on the Way to Market  

SciTech Connect

This report describes the history of compact fluorescent lamps (CFLs) in America. CFLs were introduced in the 1970s; however, it has taken more than 20 years for them to gain widespread recognition in the U.S. residential lighting market. This report reviews the development of CFLs, efforts to increase market acceptance of them, and barriers to that acceptance. Lessons to be learned from this study of CFLs are identified in hopes of assisting future market introduction efforts for other promising energy-efficient technologies. This report was prepared by the Pacific Northwest National Laboratory for the U.S. Department of Energys Office of Building Technologies, Emerging Technologies Program.

Sandahl, Linda J.; Gilbride, Theresa L.; Ledbetter, Marc R.; Steward, Heidi E.; Calwell, Chris

2006-05-22T23:59:59.000Z

448

Compact cryogenic source of periodic hydrogen and argon droplet beams for relativistic laser-plasma generation  

Science Conference Proceedings (OSTI)

We present a cryogenic source of periodic streams of micrometer-sized hydrogen and argon droplets as ideal mass-limited target systems for fundamental intense laser-driven plasma applications. The highly compact design combined with a high temporal and spatial droplet stability makes our injector ideally suited for experiments using state-of-the-art high-power lasers in which a precise synchronization between the laser pulses and the droplets is mandatory. We show this by irradiating argon droplets with multi-terawatt pulses.

Fraga, R. A. Costa; Kalinin, A.; Kuehnel, M.; Schottelius, A. [Institut fuer Kernphysik, J. W. Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany); Hochhaus, D. C.; Neumayer, P. [EMMI Extreme Matter Institute and Research Division, GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany); FIAS Frankfurt Institute for Advanced Studies, J. W. Goethe-Universitaet, Ruth-Moufang-Str. 1, 60438 Frankfurt am Main (Germany); Polz, J. [Institut fuer Optik und Quantenelektronik, Max-Wien-Platz 1, 07743 Jena (Germany); Kaluza, M. C. [Institut fuer Optik und Quantenelektronik, Max-Wien-Platz 1, 07743 Jena (Germany); Helmholtz-Institut Jena, Froebelstieg 3, 07743 Jena (Germany); Grisenti, R. E. [Institut fuer Kernphysik, J. W. Goethe-Universitaet, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany); GSI Helmholtzzentrum fuer Schwerionenforschung, Planckstr. 1, 64291 Darmstadt (Germany)

2012-02-15T23:59:59.000Z

449

The pressure confined wind of the massive and compact superstar cluster M82-A1  

E-Print Network (OSTI)

The observed parameters of the young superstar cluster M82-A1 and its associated compact HII region are here shown to indicate a low heating efficiency or immediate loss, through radiative cooling, of a large fraction of the energy inserted by stellar winds and supernovae during the early evolution of the cluster. This implies a bimodal hydrodynamic solution which leads to a reduced mass deposition rate into the ISM, with a much reduced outflow velocity. Furthermore, to match the observed parameters of the HII region associated to M82-A1, the resultant star cluster wind is here shown to ought to be confined by a high pressure interstellar medium. The cluster wind parameters, as well as the location of the reverse shock, its cooling length and the radius of the standing outer HII region are derived analytically. All of these properties are then confirmed with a semi-analytical integration of the flow equations, which provides us also with the run of the hydrodynamic variables as a function of radius. The impact of the results is discussed and extended to other massive and young superstar clusters surrounded by a compact HII region.

Sergiy Silich; Guillermo Tenorio-Tagle; Casiana Munoz-Tunon

2007-07-18T23:59:59.000Z

450

Galaxy Interactions in Compact Groups I : The Galactic Winds of HCG16  

E-Print Network (OSTI)

Using the WiFeS integral field spectrograph, we have undertaken a series of observations of star-forming galaxies in Compact Groups. In this first paper dedicated to the project, we present the analysis of the spiral galaxy NGC838, a member of the Hickson Compact Group 16, and of its galactic wind. Our observations reveal that the wind forms an asymmetric, bipolar, rotating structure, powered by a nuclear starburst. Emission line ratio diagnostics indicate that photoionization is the dominant excitation mechanism at the base of the wind. Mixing from slow shocks (up to 20%) increases further out along the outflow axis. The asymmetry of the wind is most likely caused by one of the two lobes of the wind bubble bursting out of its HI envelope, as indicated by line ratios and radial velocity maps. The characteristics of this galactic wind suggest that it is caught early (a few Myr) in the wind evolution sequence. The wind is also quite different to the galactic wind in the partner galaxy NGC839 which contains a sy...

Vogt, Frdric P A; Kewley, Lisa J

2013-01-01T23:59:59.000Z

451

Development of a fuel-powered compact SMA (Shape Memory Alloy) actuator system  

E-Print Network (OSTI)

The work presents investigations into the development of a fuel-powered compact SMA actuator system. For the final SMA actuator, the K-alloy SMA strip (0.9 mm x 2.5 mm), actuated by a forced convection heat transfer mechanism, was embedded in a rectangular channel. In this channel, a rectangular piston, with a slot to accommodate the SMA strip, ran along the strip and was utilized to prevent mixing between the hot and the cold fluid in order to increase the energy density of the system. The fuel, such as propane, was utilized as main energy source in order to achieve high energy and power densities of the SMA actuator system. Numerical analysis was carried out to determine optimal channel geometry and to estimate maximum available force, strain and actuation frequency. Multi-channel combustor/heat exchanger and micro-tube heat exchanger were designed and tested to achieve high heat transfer rate and high compactness. The final SMA actuator system was composed of pumps, valves, bellows, multi-channel combustor/heat exchanger, micro-tube heat exchanger and control unit. The experimental tests of the final system resulted in 250 N force with 2 mm displacement and 1.0 Hz actuation frequency in closed-loop operation, in which the hot and the cold fluid were re-circulated by pumps.

Jun, Hyoung Yoll

2003-12-01T23:59:59.000Z

452

Calculation of density and permeability of compacted crushed salt within an engineered shaft sealing system  

SciTech Connect

Crushed salt from the host Salado Formation is proposed as a sealing material in one component of a multicomponent seal system design for the shafts of the Waste Isolation Pilot Plant (WIPP), a mined geological repository for storage and disposal of transuranic radioactive wastes located near Carlsbad, New Mexico. The crushed salt will be compacted and placed at a density approaching 90% of the intact density of the host Salado salt. Creep closure of the shaft will further compact the crushed salt over time, thereby reducing the crushed-salt permeability from the initial state and creating an effective long-term seal. A structural model and a fluid flow model have been developed to provide an estimate of crushed-salt reconsolidation rate as a function of depth, time, and pore pressure. Model results are obtained in terms of crushed-salt permeability as a function of time and depth within the salt column. Model results indicate that average salt column permeability will be reduced to 3.3 {times} 10{sup {minus}20} m{sup 2} in about 100 years, which provides for an acceptable long-term seal component.

Loken, M. [RE/SPEC Inc., Rapid City, SD (United States); Statham, W. [Intera Inc., Austin, TX (United States)

1997-07-01T23:59:59.000Z

453

Towards Rapid Parameter Estimation on Gravitational Waves from Compact Binaries using Interpolated Waveforms  

E-Print Network (OSTI)

Accurate parameter estimation of gravitational waves from coalescing compact binary sources is a key requirement for gravitational-wave astronomy. Evaluating the posterior probability density function of the binary's parameters (component masses, sky location, distance, etc.) requires computing millions of waveforms. The computational expense of parameter estimation is dominated by waveform generation and scales linearly with the waveform computational cost. Previous work showed that gravitational waveforms from non-spinning compact binary sources are amenable to a truncated singular value decomposition, which allows them to be reconstructed via interpolation at fixed computational cost. However, the accuracy requirement for parameter estimation is typically higher than for searches, so it is crucial to ascertain that interpolation does not lead to significant errors. Here we provide a proof of principle to show that interpolated waveforms can be used to recover posterior probability density functions with negligible loss in accuracy with respect to non-interpolated waveforms. This technique has the potential to significantly increase the efficiency of parameter estimation.

R. J. E. Smith; K. Cannon; C. Hanna; D. Keppel; I. Mandel

2012-11-06T23:59:59.000Z

454

A compact breed and burn fast reactor using spent nuclear fuel blanket  

Science Conference Proceedings (OSTI)

A long-life breed-and-burn (B and B) type fast reactor has been investigated from the neutronics points of view. The B and B reactor has the capability to breed the fissile fuels and use the bred fuel in situ in the same reactor. In this work, feasibility of a compact sodium-cooled B and B fast reactor using spent nuclear fuel as blanket material has been studied. In order to derive a compact B and B fast reactor, a tight fuel lattice and relatively large fuel pin are used to achieve high fuel volume fraction. The core is initially loaded with an LEU (Low Enriched Uranium) fuel and a metallic fuel is used in the core. The Monte Carlo depletion has been performed for the core to see the long-term behavior of the B and B reactor. Several important parameters such as reactivity coefficients, delayed neutron fraction, prompt neutron generation lifetime, fission power, and fast neutron fluence, are analyzed through Monte Carlo reactor analysis. Evolution of the core fuel composition is also analyzed as a function of burnup. Although the long-life small B and B fast reactor is found to be feasible from the neutronics point of view, it is characterized to have several challenging technical issues including a very high fast neutron fluence of the structural materials. (authors)

Hartanto, D.; Kim, Y. [Korea Advanced Inst. of Science and Technology KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of)

2012-07-01T23:59:59.000Z

455

Load apparatus and method for bolt-loaded compact tension test specimen  

DOE Patents (OSTI)

A bolt-loaded compact tension test specimen load apparatus includes: a) a body having first and second opposing longitudinal ends, the first end comprising an externally threaded portion sized to be threadedly received within the test specimen threaded opening; b) a longitudinal loading rod having first and second opposing longitudinal ends, the loading rod being slidably received in a longitudinal direction within the body internally through the externally threaded portion and slidably extending longitudinally outward of the body first longitudinal end; c) a force sensitive transducer slidably received within the body and positioned to engage relative to the loading rod second longitudinal end; and d) a loading bolt threadedly received relative to the body, the loading bolt having a bearing end surface and being positioned to bear against the transducer to forcibly sandwich the transducer between the loading bolt and loading rod. Also disclosed is a method of in situ determining applied force during crack propagation in a bolt-loaded compact tension test specimen.

Buescher, Jr., Brent J. (Idaho Falls, ID); Lloyd, W. Randolph (Idaho Falls, ID); Ward, Michael B. (Idaho Falls, ID); Epstein, Jonathan S. (Idaho Falls, ID)

1997-01-01T23:59:59.000Z

456

Field-scale and wellbore modeling of compaction-induced casing failures  

SciTech Connect

Presented in this paper are the results and verification of field- and wellbore-scale large deformation, elasto-plastic, geomechanical finite element models of reservoir compaction and associated casing damage. The models were developed as part of a multidisciplinary team project to reduce the number of costly well failures in the diatomite reservoir of the South Belridge Field near Bakersfield, California. Reservoir compaction of high porosity diatomite rock induces localized shearing deformations on horizontal weak-rock layers and geologic unconformities. The localized shearing deformations result in casing damage or failure. Two-dimensional, field-scale finite element models were used to develop relationships between field operations, surface subsidence, and shear-induced casing damage. Pore pressures were computed for eighteen years of simulated production and water injection, using a three-dimensional reservoir simulator. The pore pressures were input to the two-dimensional geomechanical field-scale model. Frictional contact surfaces were used to model localized shear deformations. To capture the complex casing-cement-rock interaction that governs casing damage and failure, three-dimensional models of a wellbore were constructed, including a frictional sliding surface to model localized shear deformation. Calculations were compared to field data for verification of the models.

Hilbert, L.B. Jr.; Gwinn, R.L.; Moroney, T.A.; Deitrick, G.L.

1999-06-01T23:59:59.000Z

457

Retrograde resonances in compact multi-planetary systems: a feasible stabilizing mechanism  

E-Print Network (OSTI)

Multi-planet systems detected until now are in most cases characterized by hot-Jupiters close to their central star as well as high eccentricities. As a consequence, from a dynamical point of view, compact multi-planetary systems form a variety of the general N-body problem (with N >= 3), whose solutions are not necessarily known. Extrasolar planets are up to now found in prograde (i.e. direct) orbital motions about their host star and often in mean-motion resonances (MMR). In the present paper, we investigate a theoretical alternative suitable for the stability of compact multi-planetary systems. When the outer planet moves on a retrograde orbit in MMR with respect to the inner planet, we find that the so-called retrograde resonances present fine and characteristic structures particularly relevant for dynamical stability. We show that retrograde resonances and their resources open a family of stabilizing mechanisms involving specific behaviors of apsidal precessions. We also point up that for particular orbi...

Gayon, Julie

2008-01-01T23:59:59.000Z

458

A Lattice with Larger Momentum Compaction for the NLC Main Damping Rings  

SciTech Connect

Previous lattice designs for the Next Linear Collider Main Damping Rings [1] have met the specifications for equilibrium emittance, damping rate and dynamic aperture. Concerns about the effects of the damping wiggler on the beam dynamics [2] led to the aim of reducing the total length of the wiggler to a minimum consistent with the required damping rate, so high-field dipoles were used to provide a significant energy loss in the arcs. However, recent work has shown that the wiggler effects may not be as bad as previously feared. Furthermore, other studies have suggested the need for an increased momentum compaction (by roughly a factor of four) to raise the thresholds of various collective effects. We have therefore developed a new lattice design in which we increase the momentum compaction by reducing the field strength in the arc dipoles, compensating the loss in damping rate by increasing the length of the wiggler. The new lattice again meets the specifications for emittance, damping rate and dynamic aperture, while having the benefit of significantly higher thresholds for a number of instabilities.

Woodley, M.; Raubenheimer, Tor O.; Wu, J.; Wolski, A.; /SLAC /LBL, Berkeley

2008-03-17T23:59:59.000Z

459

Compact Probe for Power Detection from the Narrow Side of the Waveguide  

SciTech Connect

Phased array antennas with high directivity have a variety of applications. One of their applications is in RF heating for magnetically confined plasma fusion research. Among these RF heating schemes, waveguide arrays with careful phase control on each waveguide can act as a phased array antenna to deliver megawatts of power for heating fusion plasmas in the lower-hybrid range of frequencies (1 GHz-10 GHz). In order to achieve compactness, it is common to stack reduced height waveguide together to form the waveguide array. As long as the delivered power does not cause arcing in the waveguide, the waveguide height can be quite small. Due to this confined space in a stack of reduced height waveguides, power detection of the incident and reflected wave in the reduced height waveguide is extremely difficult. A new compact probe, which employs current loops, to monitor the incident and reflected wave from the narrow side of the reduced height waveguide has been developed. Its theory and performance will be reported in this paper.

C.C. Kung; S. Bernabei; J. Gumbas; N. Greenough; E. Fredd; J.R. Wilson; J. Hosea

2004-05-07T23:59:59.000Z

460

LLW Forum summary report: Volume 2, Number 1.1, February 1994: Low-level radioactive waste management activities in the states and compacts  

Science Conference Proceedings (OSTI)

Information presented for compacts and their home states includes: regulatory and program responsibility; siting responsibility, other involvement; siting; licensing; development costs; and disposal facility operation.

Norris, C. [ed.

1994-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "fluor escent compact" 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

Soil Compaction: A Comprehensive Literature Review: State-of-the-Art Review and Bibliography With Interpretations for Transmission Rights-of-Way  

Science Conference Proceedings (OSTI)

The second in a series of related reports, this study identifies causes and effects of soil compaction and remedial techniques to alleviate those effects.

1999-09-16T23:59:59.000Z

462

Analysis of Natural Graphite, Synthetic Graphite, and Thermosetting Resin Candidates for Use in Fuel Compact Matrix  

Science Conference Proceedings (OSTI)

The AGR-1 and AGR-2 compacting process involved overcoating TRISO particles and compacting them in a steel die. The overcoating step is the process of applying matrix to the OPyC layer of TRISO particles in a rotating drum in order to build up an overcoat layer of desired thickness. The matrix used in overcoating is a mixture of natural graphite, synthetic graphite, and thermosetting resin in the ratio, by weight, of 64:16:20. A wet mixing process was used for AGR-1 and AGR-2, in that the graphites and resin were mixed in the presence of ethyl alcohol. The goal of the wet mixing process was to 'resinate' the graphite particles, or coat each individual graphite particle with a thin layer of resin. This matrix production process was similar to the German, Chinese, Japanese, and South African methods, which also use various amount of solvent during mixing. See Appendix 1 for information on these countries matrix production techniques. The resin used for AGR-1 and AGR-2 was provided by Hexion, specifically Hexion grade Durite SC1008. Durite SC1008 is a solvated (liquid) resole phenolic resin. A resole resin does not typically have a hardening agent added. The major constituent of SC1008 is phenol, with minor amounts of formaldehyde. Durite SC1008 is high viscosity, so additional ethyl alcohol was added during matrix production in order to reduce its viscosity and enhance graphite particle resination. The current compacting scale up plan departs from a wet mixing process. The matrix production method specified in the scale up plan is a co-grinding jet mill process where powdered phenolic resin and graphite are all fed into a jet mill at the same time. Because of the change in matrix production style, SC1008 cannot be used in the jet milling process because it is a liquid. The jet milling/mixing process requires that a suite of solid or powdered resins be investigated. The synthetic graphite used in AGR-1 and AGR-2 was provided by SGL Carbon, grade KRB2000. KRB2000 is a graphitized petroleum coke. The availability of KRB2000 is perhaps in question, so a replacement synthetic graphite may need to be identified. This report presents data on potential replacements for KRB2000.

Trammell, Michael P [ORNL; Pappano, Peter J [ORNL

2011-09-01T23:59:59.000Z

463

Use of metal organic fluors for spectral discrimination of neutrons and gammas.  

Science Conference Proceedings (OSTI)

A new method for spectral shape discrimination (SSD) of fast neutrons and gamma rays has been investigated. Gammas interfere with neutron detection, making efficient discrimination necessary for practical applications. Pulse shape discrimination (PSD) in liquid organic scintillators is currently the most effective means of gamma rejection. The hazardous liquids, restrictions on volume, and the need for fast timing are drawbacks to traditional PSD scintillators. In this project we investigated harvesting excited triplet states to increase scintillation yield and provide distinct spectral signatures for gammas and neutrons. Our novel approach relies on metal-organic phosphors to convert a portion of the energy normally lost to the scintillation process into useful luminescence with sub-microsecond lifetimes. The approach enables independent control over delayed luminescence wavelength, intensity, and timing for the first time. We demonstrated that organic scintillators, including plastics, nanoporous framework materials, and oil-based liquids can be engineered for both PSD and SSD.

Allendorf, Mark D.; Doty, F. Patrick; Feng, Patrick L.

2010-09-01T23:59:59.000Z

464

Operators on Asymptotic $\\ell_p$ Spaces which are not Compact Perturbations of a Multiple of the Identity  

E-Print Network (OSTI)

We give sufficient conditions on an asymptotic $\\ell_p$ (for $1 space which ensure the space admits an operator which is not a compact perturbation of a multiple of the identity. These conditions imply the existence of strictly singular non-compact operators on the HI spaces constructed by G. Androulakis and the author and by I. Deliyanni and A. Manoussakis. Additionally we show that under these same conditions on the space $X$, $\\ell_\\infty$ embeds isomorphically into the space of bounded linear operators on $X$.

Beanland, Kevin

2009-01-01T23:59:59.000Z

465

Technical and economic evaluation of selected compact drill rigs for drilling 10,000 foot geothermal production wells  

DOE Green Energy (OSTI)

This report summarizes the investigation and evaluation of several {open_quotes}compact{close_quotes} drill rigs which could be used for drilling geothermal production wells. Use of these smaller rigs would save money by reducing mobilization costs, fuel consumption, crew sizes, and environmental impact. Advantages and disadvantages of currently-manufactured rigs are identified, and desirable characteristics for the {open_quotes}ideal{close_quotes} compact rig are defined. The report includes a detailed cost estimate of a specific rig, and an evaluation of the cost/benefit ratio of using this rig. Industry contacts for further information are given.

Huttrer, G.W. [Geothermal Management Company, Inc., Frisco, CO (United States)

1997-11-01T23:59:59.000Z

466

Efficiently enclosing the compact binary parameter space by singular-value decomposition  

SciTech Connect

Gravitational-wave searches for the merger of compact binaries use matched filtering as the method of detecting signals and estimating parameters. Such searches construct a fine mesh of filters covering a signal parameter space at high density. Previously it has been shown that singular-value decomposition can reduce the effective number of filters required to search the data. Here we study how the basis provided by the singular-value decomposition changes dimension as a function of template-bank density. We will demonstrate that it is sufficient to use the basis provided by the singular-value decomposition of a low-density bank to accurately reconstruct arbitrary points within the boundaries of the template bank. Since this technique is purely numerical, it may have applications to interpolating the space of numerical relativity waveforms.

Cannon, Kipp [LIGO Laboratory, California Institute of Technology, Pasadena, California 91125 (United States); Canadian Institute for Theoretical Astrophysics, 60 St. George Street, University of Toronto, Toronto, Ontario M5S 3H8 (Canada); Hanna, Chad [LIGO Laboratory, California Institute of Technology, Pasadena, California 91125 (United States); Perimeter Institute for Theoretical Physics, Waterloo, Ontario N2L 2Y5 (Canada); Keppel, Drew [LIGO Laboratory, California Institute of Technology, Pasadena, California 91125 (United States); Theoretical Astrophysics, California Institute of Technology, Pasadena, California 91125 (United States); Albert-Einstein-Institut, Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Leibniz Universitaet Hannover, D-30167 Hannover (Germany)

2011-10-15T23:59:59.000Z

467

Ultra-High Gradient Compact S-Band Linac for Laboratory and Industrial Applications  

SciTech Connect

There is growing demand from the industrial and research communities for high gradient, compact RF accelerating structures. The commonly used S-band SLAC-type structure has an operating gradient of only about 20 MV/m; while much higher operating gradients (up to 70 MV/m) have been recently achieved in X-band, as a consequence of the substantial efforts by the Next Linear Collider (NLC) collaboration to push the performance envelope of RF structures towards higher accelerating gradients. Currently however, high power X-band RF sources are not readily available for industrial applications. Therefore, RadiaBeam Technologies is developing a short, standing wave S-band structure which uses frequency scaled NLC design concepts to achieve up to a 50 MV/m operating gradient at 2856 MHz. The design and prototype commissioning plans are presented.

Faillace, Luigi; /RadiaBeam Tech.; Agustsson, Ronald; /RadiaBeam Tech.; Frigola, Pedro; /RadiaBeam Tech.; Murokh, Alex; /RadiaBeam Tech.; Dolgashev, Valery; /SLAC; Rosenzweig, James; /UCLA

2012-07-03T23:59:59.000Z

468

Rapid cooling of the compact star in Cassiopea A as a phase transition in dense QCD  

E-Print Network (OSTI)

We present a model of the compact star in Cassiopea A that accounts for its unusually fast cooling behavior. This feature is interpreted as an enhancement in the neutrino emission triggered by a transition from a fully gapped, two-flavor, color-superconducting phase to a crystalline phase or an alternative gapless, color-superconducting phase. By fine-tuning a single parameter -- the temperature of this transition -- a specific cooling scenario can be selected that fits the Cas A data. Such a scenario requires a massive $M\\sim 2M_{\\odot}$ star and is, therefore, distinctive from models invoking canonical 1.4 $M_{\\odot}$ mass star with nucleonic pairing alone.

Armen Sedrakian

2013-03-21T23:59:59.000Z

469

Development of a technology of compaction of increased-density parts using gas drainage methods  

Science Conference Proceedings (OSTI)

The influence of the amount and dispersion of technological lubricant (zinc stearate) and solid lubricants (talc, graphite, calcium fluoride) as well as the sintering temperature and time on the physical and mechanical properties of sintered iron is studied. When the stock contains no technological lubricant the porosity of the specimens drops to 5.0-5.2% but their strength is substantially greater than that of SP10 and SP30 steels of the same porosity. The strength of the specimens is highest when the iron powder has the smallest grain size. Solid lubricants in the stock result in the pressed iron-powder parts having poorer mechanical properties, although they do act in part as technological lubricants during compaction. Favorable results may be obtained by complex alloying of the stock, i.e., the simultaneous introduction of several solid lubricants.

Mamedov, A.T. [Scientific-Industrial Firm Bakkonditsioner, Baku (Russian Federation)

1995-03-01T23:59:59.000Z

470

Application of polycrystalline diamond compact bits in the Kuparuk River Field, Alaska  

SciTech Connect

In soft to medium-hard clays and shales, polycrystalline diamond compact (PDC) bits have proved economically successful in the Kuparuk River field, AK. Through the redesign and modification of PDC bits and rig equipment, the necessary operating parameters have been achieved, and the use of PDC bits has become routine. These bits are typically run with a bit weight of 30,000 to 40,000 lbf (133 to 178 kN), a standpipe pressure of 4,000 psi (27 MPa), a pump rate of 400 to 450 gal/min (1.5 to 1.7 m/sup 3//min), and a rotary speed of 150 to 200 rev/min. Use of these high operating parameters saves about $50,000 per PDC bit when compared with roller-cone bits.

Balkenbush, R.J.; Onisko, J.E.

1985-07-01T23:59:59.000Z

471

Gravitational radiation from compact binary systems in the massive Brans-Dicke theory of gravity  

E-Print Network (OSTI)

We derive the equations of motion, the periastron shift, and the gravitational radiation damping for quasicircular compact binaries in a massive variant of the Brans-Dicke theory of gravity. We also study the Shapiro time delay and the Nordtvedt effect in this theory. By comparing with recent observational data, we put bounds on the two parameters of the theory: the Brans-Dicke coupling parameter \\omega_{BD} and the scalar mass m_s. We find that the most stringent bounds come from Cassini measurements of the Shapiro time delay in the Solar System, that yield a lower bound \\omega_{BD}>40000 for scalar masses m_s1000 for m_s1250 for m_sradiation damping in the eccentric white dwarf-neutron star binary PSR J1141-6545, but a quantitative prediction requires the extension of our work to eccentric orbits.

Justin Alsing; Emanuele Berti; Clifford M. Will; Helmut Zaglauer

2011-12-21T23:59:59.000Z

472

Study of Compact Tunable Filters Using Negative Refractive Index Transmission Lines  

E-Print Network (OSTI)

Today's microwave circuits, whether for communication, radar, or testing systems, need compact tunable microwave filters. Since different microwave circuit applications have radically different size, power, insertion loss, rejection, vibration, and thermal requirements, new filter technologies with different balances between these requirements are always desirable. Negative Refractive Index (NRI) transmission media was discovered 10 years ago with the unique property of negative phase propagation. A literature review was conducted to identify potential NRI methods for filters and other devices, but no NRI tunable filters were found. To address this gap, a family of tunable NRI bandpass filters was simulated and constructed successfully using end-coupled zeroth order resonators. Tuning was accomplished by controlling the negative phase length of the NRI sections with varactors. The resulting L-band filters exhibited a 25-40 percent tunable range, no higher order resonances, and required only one fourth the length of a coupled-line filter constructed from traditional 180 degree microstrip resonators.

Lewis, Brian Patrick

2011-05-01T23:59:59.000Z

473

Testing of Compact Bolted Fasteners with Insulation and Friction-Enhanced Shims for NCSX  

SciTech Connect

The fastening of the National Compact Stellarator Experiment's (NCSX) modular coils presented a number of engineering and manufacturing challenges due to the high magnetic forces, need to control induced currents, tight tolerances and restrictive space envelope. A fastening method using high strength studs, jack nuts, insulating spacers, bushings and alumina coated shims was developed which met the requirements. A test program was conducted to verify the design. The tests included measurements of flatness of the spacers, determination of contact area, torque vs. tension of the studs and jack nuts, friction coefficient tests on the alumina and G-10 insulators, electrical tests, and tension relaxation tests due to temperature excursions from room temperature to liquid nitrogen temperatures. This paper will describe the design and the results of the test program.

L. E. Dudek, J.H. Chrzanowski, G. Gettelfinger, P. Heitzenroeder, S. Jurczynski, M. Viola and K. Freudenberg

2009-02-04T23:59:59.000Z

474

The Web of D-branes at Singularities in Compact Calabi-Yau Manifolds  

E-Print Network (OSTI)

We present novel continuous supersymmetric transitions which take place among different chiral configurations of D3/D7 branes at singularities in the context of type IIB Calabi-Yau compactifications. We find that distinct local models which admit a consistent global embedding can actually be connected to each other along flat directions by means of transitions of bulk-to-flavour branes. This has interesting interpretations in terms of brane recombination/splitting and brane/anti-brane creation/annihilation. These transitions give rise to a large web of quiver gauge theories parametrised by splitting/recombination modes of bulk branes which are not present in the non-compact case. We illustrate our results in concrete global embeddings of chiral models at a dP_0 singularity.

Michele Cicoli; Sven Krippendorf; Christoph Mayrhofer; Fernando Quevedo; Roberto Valandro

2013-04-09T23:59:59.000Z

475