3,672 Matching Results

Search Results

Results: 1 - 24 next
open access

Local Effects of Biased Electrodes in the Divertor of NSTX

Description: The goal of this paper is to characterize the effects of small non-axisymmetric divertor plate electrodes on the local scrape-off layer plasma. Four small rectangular electrodes were installed into the outer divertor plates of NSTX. When the electrodes were located near the outer divertor strike point and biased positively, there was an increase in the nearby probe currents and probe potentials and an increase in the LiI light emission at the large major radius end of these electrodes. When an … more
Date: May 7, 2012
Creator: : S. Zweben, M.D. Campanell, B.C. Lyons, R.J. Maqueda, Y. Raitses, A.L. Roquemore and F. Scotti
Partner: UNT Libraries Government Documents Department
open access

GLASS FORMULATION TESTING TO INCREASE SULFATE INCORPORATION - Final Report VSL-04R4960-1, Rev 0, 2/28/05, Vitreous State Laboratory, The Catholic University of American, Washington, D.C.

Description: About 50 million gallons of high-level mixed waste is currently in storage in underground tanks at The United States Department of Energy's (DOE's) Hanford site in the State of Washington. The Hanford Tank Waste Treatment and Immobilization Plant (WTP) will provide DOE's Office of River Protection (ORP) with a means of treating this waste by vitrification for subsequent disposal. The tank waste will be separated into low- and high-activity fractions, which will then be vitrified respectively in… more
Date: February 7, 2012
Creator: AA, KRUGER & KS, MATLACK
Partner: UNT Libraries Government Documents Department
open access

SMALL-SCALE MELTER TESTING WITH LAW SIMULANTS TO ASSESS THE IMPACT OF HIGHER TEMPERATURE MELTER OPERATIONS - Final Report, VSL-04R49801-1, Rev. 0, 2/13/03, Vitreous State Laboratory, The Catholic University of America, Washington, D.C.

Description: About 50 million gallons of high-level mixed waste is currently in storage in underground tanks at The United States Department of Energy's (DOE's) Hanford site in the State of Washington. The Hanford Tank Waste Treatment and Immobilization Plant (WTP) will provide DOE's Office of River Protection (ORP) with a means of treating this waste by vitrification for subsequent disposal. The tank waste will be separated into low- and high-activity fractions, which will then be vitrified respectively in… more
Date: February 7, 2012
Creator: AA, KRUGER & KS, MATLACK
Partner: UNT Libraries Government Documents Department
open access

Simulation of a Production Facility with an Automated Transport System

Description: A model was needed to assess material throughput and validate the conceptual design of a production facility, including equipment lists and layout. The initial desire was to use a commercially available discrete event simulation package. However, the available software was found to be too limited in capability. Database interface software was used to develop autonomous intelligent manufacturing workstations and material transporters. The initial Extend model used to assess material throughput a… more
Date: April 7, 2004
Creator: ABRAMCZYK, GLENN
Partner: UNT Libraries Government Documents Department
open access

Temperature tests of high frequency SLIFER oscillator, LEA73-2176. [For monitoring underground nuclear detonations at Nevada Test Site]

Description: SLIFER (Short Location Indication by Frequency of Electrical Resonance) systems measure stress wave velocity in solid or liquid materials. They monitor underground nuclear detonations at the Nevada Test Site (NTS). A shorted length of coaxial cable is a component in an oscillator's tank circuit. This sensor cable is inductive when less than one-fourth wavelength long at the oscillator's resonant frequency. The stress wave from a detonation crushes and shorts this sensor cable. As the … more
Date: June 7, 1976
Creator: Aaron, Carl C., Jr.
Partner: UNT Libraries Government Documents Department
open access

Chamber and target technology development for inertial fusion energy

Description: Fusion chambers and high pulse-rate target systems for inertial fusion energy (IFE) must: regenerate chamber conditions suitable for target injection, laser propagation, and ignition at rates of 5 to 10 Hz; extract fusion energy at temperatures high enough for efficient conversion to electricity; breed tritium and fuel targets with minimum tritium inventory; manufacture targets at low cost; inject those targets with sufficient accuracy for high energy gain; assure adequate lifetime of the chamb… more
Date: April 7, 1999
Creator: Abdou, M.; Besenbruch, G.; Duke, J.; Forman, L.; Goodin, D.; Gulec, K. et al.
Partner: UNT Libraries Government Documents Department
open access

Electricity Restructuring Background: Public Utility Holding Company Act of 1935 (PUHCA)

Description: This report provides background information on PUHCA, including its history and impact. It also discusses how PUHCA reform fits into the current electric utility industry restructuring debate. This report will be updated as events warrant. For related information on electricity restructuring, see the CRS Electronic Briefing Book.
Date: January 7, 1999
Creator: Abel, Amy
Partner: UNT Libraries Government Documents Department
open access

Electricity: The Road Toward Restructuring

Description: The Public Utility Holding Company Act of 1935 (PUHCA) and the Federal Power Act (FPA) were enacted to eliminate unfair practices and other abuses by electricity and gas holding companies by requiring federal control and regulation of interstate public utility holding companies. Comprehensive energy legislation has passed the House and Senate. The House passed H.R. 6 on April 11, 2003. On July 31, 2003, the Senate suspended debate on S. 14, inserted the text of H.R. 4 (107th Congress) as a subs… more
Date: September 7, 2001
Creator: Abel, Amy & Parker, Larry, 1954-2013
Partner: UNT Libraries Government Documents Department
open access

Interagency Geothermal Coordinating Council fifth annual report. Final draft

Description: Geothermal energy is the natural heat of the earth, and can be tapped as a clean, safe, economical alternative source of energy. Much of the geothermal energy resource is recoverable with current or near-current technology and could make a significant contribution both to increasing domestic energy supplies and to reducing the US dependence on imported oil. Geothermal energy can be used for electric power production, residential and commercial space heating and cooling, industrial process heat,… more
Date: July 7, 1981
Creator: Abel, Fred H.
Partner: UNT Libraries Government Documents Department
open access

The H II Region of a Primordial Star

Description: The concordance model of cosmology and structure formation predicts the formation of isolated very massive stars at high redshifts in dark matter dominated halos of 10{sup 5} to 10{sup 6} Msun. These stars photo-ionize their host primordial molecular clouds, expelling all the baryons from their halos. When the stars die, a relic H II region is formed within which large amounts of molecular hydrogen form which will allow the gas to cool efficiently when gravity assembles it into larger dark matt… more
Date: June 7, 2006
Creator: Abel, Tom; Wise, John H. & Bryan, Greg L.
Partner: UNT Libraries Government Documents Department
open access

Measurement of HOMs in the RHIC RF Cavities

Description: The authors present results of Higher Order Modes (HOMs) measurements in the RHIC accelerating (28 MHz system) and storage (197 MHz system) cavities. The power of the excited HOMs deposited into the HOM damper is measured and compared with an analytical calculation of the HOMs power. The quality factors (Q) are also measured and compared to previous measurements.
Date: January 7, 2009
Creator: Abreu,N.P. & Choi, E. M.
Partner: UNT Libraries Government Documents Department
open access

Comparison of flight performance of AN-F-58 and AN-F-32 fuels in J35 turbojet engine

Description: Report presenting a flight investigation to determine the comparative performance of AN-F-58 and AN-F-32 fuels in a 4000-pound-thrust turbojet engine. The fuels were equivalent over the range of conditions investigated. Results regarding corrected net thrust, corrected jet-fuel consumption, variation of corrected tail-pipe temperature, combustor blow-out speeds, and visual observations of the jet exhaust are provided.
Date: April 7, 1949
Creator: Acker, Loren W. & Kleinknecht, Kenneth S.
Partner: UNT Libraries Government Documents Department
open access

Top physics: measurement of the tt-bar production cross section in p anti-p collisions at s**(1/2) = 1.96 tev using lepton + jets events with secondary vertex b-tagging

Description: We present a measurement of the t{bar t} production cross section using events with one charged lepton and jets from p{bar p} collisions at a center-of-mass energy of 1.96TeV. In these events, heavy flavor quarks from top quark decay are identified with a secondary vertex tagging algorithm. From 162 pb{sup -1} of data collected by the Collider Detector at Fermilab, a total of 48 candidate events are selected, where 13.5 {+-} 1.8 events are expected from background contributions. We measure a t{… more
Date: April 7, 2005
Creator: Acosta, D.
Partner: UNT Libraries Government Documents Department
open access

The Rheology of Concentrated Suspensions

Description: Research program on the rheological properties of flowing suspensions. The primary purpose of the research supported by this grant was to study the flow characteristics of concentrated suspensions of non-colloidal solid particles and thereby construct a comprehensive and robust theoretical framework for modeling such systems quantitatively. At first glance, this seemed like a modest goal, not difficult to achieve, given that such suspensions were viewed simply as Newtonian fluids with an effect… more
Date: September 7, 2004
Creator: Acrivos, Andreas
Partner: UNT Libraries Government Documents Department
open access

Weatherization Assistance Program Technical Assistance Center

Description: The following is a synopsis of the major achievements attributed to the operation of the Weatherization Assistance Program Technical Assistance Center (WAPTAC) by the National Association for State Community Services Programs (NASCSP). During the past five years, the WAPTAC has developed into the premier source for information related to operating the Weatherization Assistance Program (WAP) at the state and local levels. The services provide through WAPTAC include both virtual technical support… more
Date: January 7, 2009
Creator: Adams, Robert
Partner: UNT Libraries Government Documents Department
open access

Confirmatory Survey Report for Portions of the Auxiliary Building Structural Surfaces and Turbine Building Embedded Piping, Rancho Seco Nuclear Generating Station, Herald, CA

Description: During the period of October 15 and 18, 2007, ORISE performed confirmatory radiological survey activities which included beta and gamma structural surface scans and beta activity direct measurements within the Auxiliary Building, beta or gamma scans within Turbine Building embedded piping, beta activity determinations within Turbine Building Drain 3-1-27, and gamma scans and the collection of a soil sample from the clay soils adjacent to the Lower Mixing Box.
Date: December 7, 2007
Creator: Adams, W. C.
Partner: UNT Libraries Government Documents Department
open access

Revised─Confirmatory Survey Report for Portions of the Auxiliary Building Structural Surfaces and Turbine Building Embedded Piping, Rancho Seco Nuclear Generating Station, Herald, California

Description: During the period of October 15 and 18, 2007, ORISE performed confirmatory radiological survey activities which included beta and gamma structural surface scans and beta activity direct measurements within the Auxiliary Building, beta or gamma scans within Turbine Building embedded piping, beta activity determinations within Turbine Building Drain 3-1-27, and gamma scans and the collection of a soil sample from the clay soils adjacent to the Lower Mixing Box.
Date: December 7, 2007
Creator: Adams, W. C.
Partner: UNT Libraries Government Documents Department
open access

Experimental Investigation of In Situ Cleanable HEPA Filters

Description: For the past several years studies have been conducted to investigate the use of innovative, alternative approaches to conventional disposable high efficiency particulate air filters.
Date: January 7, 1999
Creator: Adamson, D.J.
Partner: UNT Libraries Government Documents Department
open access

Iran: Regional Perspectives and U.S. Policy

Description: This report provides a description of Iran's neighbors' policies and interests, options for Congressional consideration, and an analysis of potential regional implications
Date: October 7, 2009
Creator: Addis, Casey L.; Blanchard, Christopher M.; Katzman, Kenneth; Migdalovitz, Carol; Nichol, Jim; Sharp, Jeremy Maxwell et al.
Partner: UNT Libraries Government Documents Department
open access

Raman Spectroscopy Characterization of amorphous carbon coatings for computer hard disks

Description: Amorphous carbon films are used as protective coatings on magnetic media to protect the magnetic layer from wear and abrasion caused by the read/write head during hard disk drive start-up and operation. A key requirement in increasing the storage capacity and reliability of hard-disk drives is improving the performance of these coatings. This cooperative agreement used optical characterization techniques developed at LBNL to study thin-film hard disk media produced by Seagate Technology, major … more
Date: May 7, 1998
Creator: Ager, Joel W., III
Partner: UNT Libraries Government Documents Department
open access

Stability and Regeneration of Catalysts for the Destruction of Tars from Bio-mass Black Liquor Gasification

Description: The goal of this project was to develop catalytic materials and processes that would be effective in the destruction of tars formed during the gasification of black liquor and biomass. We report here the significant results obtained at the conclusion of this two year project.
Date: September 7, 2004
Creator: Agrawal, Pradeep
Partner: UNT Libraries Government Documents Department
Back to Top of Screen