8,558 Matching Results

Search Results

Results: 1 - 24 next
open access

PROPOSAL FOR A SILICON VERTEX TRACKER (VTX) FOR THE PHENIX EXPERIMENT

Description: We propose the construction of a Silicon Vertex Tracker (VTX) for the PHENIX experiment at RHIC. The VTX will substantially enhance the physics capabilities of the PHENIX central arm spectrometers. Our prime motivation is to provide precision measurements of heavy-quark production (charm and beauty) in A+A, p(d)+A, and polarized p+p collisions. These are key measurements for the future RHIC program, both for the heavy ion program as it moves from the discovery phase towards detailed investigati… more
Date: October 1, 2004
Creator: AKIBA,Y.
Partner: UNT Libraries Government Documents Department
open access

Construction and Testing of a Low-power Cryostat for MARS

Description: A low-power cryostat was designed and built for the Multi-sensor Airborne Radiation Survey (MARS) project for the purpose of housing a close-packed high-purity germanium (HPGe) detector array of 14 HPGe detectors. The power consumption of the cold mass in the cryostat was measured to be 4.07(11) watts, sufficient for 5.5 days of continuous operation using only 8 liters of liquid nitrogen. Temperatures throughout the cryostat were measured by platinum resistance temperature detectors. These meas… more
Date: October 1, 2007
Creator: Aalseth, Craig E.; Caggiano, Joseph A.; Day, Anthony R.; Fast, James E. & Fuller, Erin S.
Partner: UNT Libraries Government Documents Department
open access

Application of imitation steam'' systems to hot water district heating and cooling systems

Description: Pequod Associates, Inc. and District Energy St. Paul, Inc. installed a pilot project of an innovative District Heating technology through a contract with the US DOE. This applied research was funded by the Energy Research and Development Act (94--163) for District Heating and Cooling Research. The experimental design is an intervention technique that permits hot water district heating systems to connect to buildings equipped with steam heating systems to connect to buildings equipped with steam… more
Date: October 1, 1991
Creator: Aalto, P.J. & Chen, D.B.
Partner: UNT Libraries Government Documents Department
open access

Basic research needed for the development of geothermal energy

Description: Basic research needed to facilitate development of geothermal energy is identified. An attempt has been made to make the report representative of the ideas of productive workers in the field. The present state of knowledge of geothermal energy is presented and then specific recommendations for further research, with status and priorities, are listed. Discussion is limited to a small number of applicable concepts, namely: origin of geothermal flux; transport of geothermal energy; geothermal rese… more
Date: October 1, 1980
Creator: Aamodt, R. L. & Riecker, R. E.
Partner: UNT Libraries Government Documents Department
open access

Drawdown behavior of gravity drainage wells

Description: An analytical solution for drawdown in gravity drainage wells is developed. The free-surface flow is viewed as incompressible, and anisotropy effects are included. The well is a line source well, and the reservoir is infinitely large. The model is valid for small drawdowns. The uniform wellbore potential inner boundary condition is modelled using the proper Green`s function. The discontinuity at the wellbore is solved by introducing a finite skin radius, and the formulation produces a seepage f… more
Date: October 1, 1993
Creator: Aasen, J. A. & Ramey, H. J. Jr.
Partner: UNT Libraries Government Documents Department
open access

Carbon dioxide problem: DOE program and a general assessment

Description: From the view of a potential national or international policy on CO/sub 2/, progress towards these goals is reported along with suggestions for additions to and implementation of the present work. After the introduction, conclusions and recommendations are presented. The third and fourth sections contain discussions of the present research programs on the carbon cycle and on climate modeling. The fifth section considers physical effects of CO/sub 2/-induced climate change that may be of social … more
Date: October 1, 1980
Creator: Abarbanel, H.; Chamberlain, J.; Foley, H.; MacDonald, G.; Nierenberg, W. & Ruderman, M.
Partner: UNT Libraries Government Documents Department
open access

Power as a function of reliability

Description: Many studies employ multiple measurement instruments such as human raters, observers, judges, or mechanical gauges to record subject data. It is well known that the consistency of these instruments, commonly called rater reliability, limits the extent to which conclusions should be drawn from the observed data. However, the degree to which rater reliability limits conclusions has traditionally been assessed in only subjective manners. In this paper, a method is developed for objectively quantif… more
Date: October 1, 1995
Creator: Abate, M.L.; McCabe, G.P. & Lynch, M.P.
Partner: UNT Libraries Government Documents Department
open access

Stabilization and/or regeneration of spent sorbents from coal gasification. [Quarterly] technical report, March 1, 1992--May 31, 1992

Description: The objective of this investigation is to determine the effects of SO{sub 2} partial pressure and reaction temperature on the conversion of sulfide containing solid wastes from coal gasifiers to stable and environmentally acceptable calcium sulfate, while preventing the release of sulfur dioxide through undesirable side reactions during the stabilization step. An additional objective of this program is to investigate the use of the Spent Sorbent Regeneration Process (SSRP) to regenerate spent l… more
Date: October 1, 1992
Creator: Abbasian, J.; Hill, A. H. & Wangerow, J. R.
Partner: UNT Libraries Government Documents Department
open access

Development of novel copper-based sorbents for hot-gas cleanup. Technical report, March 1, 1992--May 31, 1992

Description: The objective of this investigation is to evaluate several novel copper-based binary oxides for their suitability as regenerable sorbents for hot gas cleanup application in the temperature range of 650{degrees} to 850{degrees}C. During this quarter cyclic sulfidation/regeneration tests of the sorbents Cu{sub 2}Cr-O and Cu-Ce-0 were conducted using different compositions of the feed gases to investigate the effects of H{sub 2}0, H{sub 2} and CO. These tests were conducted in a packed-bed microre… more
Date: October 1, 1992
Creator: Abbasian, J.; Hill, A. H.; Wangerow, J. R.; Flytzani-Stephanopoulos, M.; Bo, L. & Patel, C.
Partner: UNT Libraries Government Documents Department
open access

Rankine cycle energy conversion system design considerations for low and intermediate temperature sensible heat sources. Geothermal, waste heat, and solar thermal conversion

Description: Design considerations are described for energy conversion systems for low and intermediate temperature sensible heat sources such as found in geothermal, waste heat, and solar-thermal applications. It is concluded that the most cost effective designs for the applications studied did not require the most efficient thermodynamic cycle, but that the efficiency of the energy conversion hardware can be a key factor.
Date: October 1, 1976
Creator: Abbin, J. P. Jr.
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Mercury Concentrations Near Salmon Falls Creek Reservoir - Phase 1

Description: Elemental and reactive gaseous mercury (EGM/RGM) were measured in ambient air concentrations over a two-week period in July/August 2005 near Salmon Falls Creek Reservoir, a popular fishery located 50 km southwest of Twin Falls, Idaho. A fish consumption advisory for mercury was posted at the reservoir in 2002 by the Idaho Department of Health and Welfare. The air measurements were part of a multi-media (water, sediment, precipitation, air) study initiated by the Idaho Department of Environmenta… more
Date: October 1, 2005
Creator: Abbott, M. L.
Partner: UNT Libraries Government Documents Department
open access

Environmental Sampling FY03 Annual Report - Understanding the Movement of Mercury on the INEEL

Description: Environmental mercury measurements were started in Fy-01 at the Idaho National Engineering Laboratory (INEEL) to monitor downwind impacts from on-going waste treatment operations at the Idaho Nuclear Technology and Engineering Center (INTEC) and to improve our scientific understanding of mercury fate and transport in this region. This document provides a summary of the sampling done in FY04. Continuous total gaseous mercury (TGM) measurements were made using a Tekran Model 2537A mercury vapor a… more
Date: October 1, 2003
Creator: Abbott, Michael L.
Partner: UNT Libraries Government Documents Department
open access

Air Dispersion Modeling of Mine Waste in the Southeast Missouri Old Lead Belt

Description: Past lead ore processing conducted in the Southeast Missouri Old Lead Belt since the 1700s has left numerous large areas of lead contamination in elevated piles of fine gravel waste called “chat” and dried-out tailings ponds. Wind suspension and atmospheric dispersion are known to transport these materials to the surrounding communities where the lead could pose a human health threat through inhalation or ingestion of the deposited contamination. The purpose of this study was to estimate potent… more
Date: October 1, 1999
Creator: Abbott, Michael Lehman
Partner: UNT Libraries Government Documents Department
open access

Debris-bed cooling following an HCDA in a fast reactor. Annual progress report

Description: Natural convection within simulated core debris beds has been investigated experimentally and numerically. The objectives of this research have been: (1) to develop a three-dimensional transient model for analyzing single-phase cooling of debris beds; (2) to validate the model using out-of-pile simulant experiments which measure the detailed structure of the convection cells within the bed as well as integral heat transfer rates; and (3) to apply the model to typical core debris beds over a wid… more
Date: October 1, 1982
Creator: Abdel-Khalik, S.I.
Partner: UNT Libraries Government Documents Department
open access

FINESSE: study of the issues, experiments and facilities for fusion nuclear technology research and development. Interim report. Volume I

Description: The following chapters are included in this study: (1) fusion nuclear issues, (2) survey of experimental needs, (3) requirements of the experiments, (4) non-fusion facilities, (5) fusion facilities for nuclear experiments, and (6) fusion research and development scenarios. (MOW)
Date: October 1, 1984
Creator: Abdou, M.
Partner: UNT Libraries Government Documents Department
open access

FINESSE: study of the issues, experiments and facilities for fusion nuclear technology research and development. Interim report. Volume II

Description: The Nuclear Fusion Issues chapter contains a comprehensive list of engineering issues for fusion reactor nuclear components. The list explicitly defines the uncertainties associated with the engineering option of a fusion reactor and addresses the potential consequences resulting from each issue. The next chapter identifies the fusion nuclear technology testing needs up to the engineering demonstration stage. (MOW)
Date: October 1, 1984
Creator: Abdou, M.
Partner: UNT Libraries Government Documents Department
open access

FINESSE: study of the issues, experiments and facilities for fusion nuclear technology research and development. Interim report. Volume III

Description: This chapter deals with the analysis and engineering scaling of solid breeded blankets. The limits under which full component behavior can be achieved under changed test conditions are explored. The characterization of these test requirements for integrated testing contributes to the overall test matrix and test plan for the understanding and development of fusion nuclear technology. The second chapter covers the analysis and engineering scaling of liquid metal blankets. The testing goals for a… more
Date: October 1, 1984
Creator: Abdou, M.
Partner: UNT Libraries Government Documents Department
open access

Geohydrology of Bandelier Tuff

Description: The Los Alamos National Laboratory has been disposing of radioactive wastes since 1944. Environmental studies and monitoring for radioactive contamination started concurrently. In this report, only two mechanisms and rates by which the radionuclides can enter the environment are studied in detail: subsurface transport of radionuclides by migrating water, and diffusion of tritiated water (HTO) in the vapor phase. The report also includes a section concerning the influence of moisture on shear st… more
Date: October 1, 1981
Creator: Abeele, M. V.; Wheeler, M. L. & Burton, B. W.
Partner: UNT Libraries Government Documents Department
open access

Influence of access hole parameters on neutron moisture probe readings

Description: Computing soil moisture content with a neutron probe requires use of a calibration curve that considers the thermal neutron capture cross section of the hole liner, as well as the hole diameter. The influence of steel, polyvinyl chloride, and aluminum casings that fit 0.051- to 0.102-m hole diameters was determined by comparison with neutron probe readings in uncased holes of corresponding diameters. Eccentricity of probe location was considered a potentially significant variable. The experimen… more
Date: October 1, 1979
Creator: Abeele, W.V.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen