25 Matching Results

Search Results

Results: 1 - 24 next
open access

High beta and second stability region transport and stability analysis

Description: This document describes ideal and resistive MHD studies of high-beta plasmas and of the second stability region. Significant progress is reported on the resistive stability properties of high beta poloidal supershot'' discharges. For these studies initial profiles were taken from the TRANSP code which is used extensively to analyze experimental data. When an ad hoc method of removing the finite pressure stabilization of tearing modes is implemented it is shown that there is substantial agreemen… more
Date: September 5, 1991
Partner: UNT Libraries Government Documents Department
open access

In-Home Performance of Exempt Pellet Stoves in Medford, Oregon.

Description: Pellet stoves that are considered exempt'' operate at an air-to-fuel ratio in excess of 35:1. They therefore qualify for exemption from the emissions certification process. A primary goal of this project was to determine how a sample of such stoves, operated in homes, would perform compared to their certified cousins,'' which were evaluated the previous year. In-home performance data documenting emissions from exempt stoves and net delivered efficiencies was particularly desired. This project e… more
Date: July 5, 1991
Creator: Barnett, Stockton G. & Fields, Paula G.
Partner: UNT Libraries Government Documents Department
open access

Ductile-Brittle Transition Temperature testing of tungsten using the three-point bend test

Description: Three-point bend tests were performed to determine the Ductile-Brittle Transition Temperatures (DBTTs) of forged and chemical vapor deposition (CVD) tungsten. Testing was performed under quasi-static conditions at temperatures between 23{degrees}C and 450{degrees}C using a forced-air environmental chamber. Load-displacement data from the three-point bend tests indicated that the constitutive behavior of the materials tested varied considerably. Finite element modeling of the three-point bend te… more
Date: March 5, 1991
Creator: Lassila, D.H.; Magness, F. & Freeman, D.
Partner: UNT Libraries Government Documents Department
open access

Cedar Project---Original goals and progress to date

Description: This report describes: Cedar System Hardware; Compiler and Software Issues on Memory Management; Operating Systems; Compilers; and Multiprocessor Performance on Algorithms and Applications.
Date: September 5, 1991
Creator: Cybenko, G.; Kuck, D.; Padua, D. & Gallopoulos, E.
Partner: UNT Libraries Government Documents Department
open access

Exploratory coprocessing research

Description: The objectives of this project were to (1) study the scope of the beneficial effects of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms.
Date: September 5, 1991
Creator: Hirschon, A. S.; Tse, D. S.; Malhotra, R.; McMillen, D. F. & Ross, D. S.
Partner: UNT Libraries Government Documents Department
open access

Estimating deposition velocity from atmospheric releases of iodine

Description: Deposition velocity is a parameter used in atmospheric transport models to specify the amount an atmospheric constituent transferred from the atmosphere to the surface of the earth. The material may deposit on the surface of soil, water, or vegetation. The deposition may be the result of rainfall or diffusion. A method for the calculation of deposition velocity based upon the decrease in deposition with distance from a point source is presented. The method does not require a knowledge of the ti… more
Date: February 5, 1991
Creator: Murphy, C. E. Jr.
Partner: UNT Libraries Government Documents Department
open access

Confined zone dispersion flue gas desulfurization demonstration

Description: The CZD process involves flue gas post-treatment, physically located between a boiler's outlet and its particulate collector, which in the majority of cases is an electrostatic precipitator. The features that distinguish this process from other similar injection processes are: Injection of an alkaline slurry directly into the duct, instead of injection of dry solids into the duct ahead of a fabric filter. Use of an ultrafine calcium/magnesium hydroxide, type S pressure-hydrated dolomitic lime. … more
Date: September 5, 1991
Partner: UNT Libraries Government Documents Department
open access

Natural gas monthly, October 1991

Description: The Natural Gas Monthly (NGM) is prepared in the Data Operations Branch of the Reserves and Natural Gas Division, Office of Oil and Gas, Energy Information Administration (EIA), US Department of Energy (DOE). The NGM highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Pro… more
Date: November 5, 1991
Partner: UNT Libraries Government Documents Department
open access

Exploratory Coprocessing Research. Final Report, September 1988--June 1991

Description: The objectives of this project were to (1) study the scope of the beneficial effects of hydrothermal pretreatment of coal on subsequent conversion, (2) identify and study the chemical or physical causes of this effect, and (3) attempt to elucidate the chemistry responsible for any coal-resid synergisms.
Date: September 5, 1991
Creator: Hirschon, Albert S.; Tse, Doris S.; Malhotra, Ripudaman; McMillen, Donald F. & Ross, David S.
Partner: UNT Libraries Government Documents Department
open access

Evaluation of OPEN PLAN software: Final report

Description: In fulfilling the objectives of the contract to evaluate the suitability of the OPEN PLAN software system to process existing Environmental Restoration (ER) data, Jacobs Engineering Group (JEG) divided the effort into seven discrete tasks. Overall results of the tasks performed demonstrated that OPEN PLAN could be used in conjunction with the currently used TIMELINE to provide resource leveling and meet all reporting requirements. The OPEN PLAN report generator could automatically produce repor… more
Date: March 5, 1991
Partner: UNT Libraries Government Documents Department
open access

Radioecological implications of the Par Pond drawdown

Description: The drawdown of the Par Pond reservoir created dramatic alterations in this formerly stable lentic ecosystem. In addition, the radiation environment at Par Pond has changed significantly because of the exposure of Cesium 137-contaminated sediments and the appearance of new transport pathways to the terrestrial environment. In response to this situation, SREL was asked to study the radioecological implications of the reservoir drawdown. This report contains the objectives, methods, and results o… more
Date: December 5, 1991
Creator: Hickey, H. & Whicker, F. W.
Partner: UNT Libraries Government Documents Department
open access

D-Zero Collider Detector Cryopump Design and Operation

Description: The vacuum pumping of the CC Cryostat was anticipated to be dominated by a water vapor load. The Engineering Note 270, extrapolating from earlier experience, predicts the removal of water vapor will be the dominant pumping load and take ca. 45 days to remove at the pumping speed planned. Part of the planned pumping capability was a homemade, liquid nitrogen temperature, water vapor cryopump. This note describes the design, fabrication and performance experiences of the Cryopump described in the… more
Date: April 5, 1991
Creator: Wu, J. & Mulholland, G. T.
Partner: UNT Libraries Government Documents Department
open access

Estimating deposition velocity from atmospheric releases of iodine

Description: Deposition velocity is a parameter used in atmospheric transport models to specify the amount an atmospheric constituent transferred from the atmosphere to the surface of the earth. The material may deposit on the surface of soil, water, or vegetation. The deposition may be the result of rainfall or diffusion. A method for the calculation of deposition velocity based upon the decrease in deposition with distance from a point source is presented. The method does not require a knowledge of the ti… more
Date: February 5, 1991
Creator: Murphy, C. E. Jr.
Partner: UNT Libraries Government Documents Department
open access

Fixing the Closed Orbits in the Debuncher

Description: Without a large number of new trims the best way to fix the closed orbits in the debuncher is to move quads. There are some obvious features in the vertical orbit, Figure 1, that look like they are indeed orbit distortions. The horizontal orbit, Figure 2, also has some systematic features that can be removed by moving a small number of quads. It is likely that removing these orbit distortions will help in improving the aperture. In addition, the second order effects of such large offsets in the… more
Date: April 5, 1991
Creator: Halling, Mike
Partner: UNT Libraries Government Documents Department
open access

Management-By-Objectives Plan FY 1991

Description: This administrative report is of historical interest. It covers research on Hydrothermal, Geopressured Geothermal, Hot Dry Rock systems, and the Long Valley Experimental (occasioned originally by the Magma Energy Program). (DJE 2005)
Date: June 5, 1991
Partner: UNT Libraries Government Documents Department
open access

Lobbying by Foreign Interests: Japan

Description: This report is one of a series of CRS reports that examines lobbying and pressure group influence by foreign interests on US public policy.
Date: April 5, 1991
Creator: Sachs, Richard C.
Partner: UNT Libraries Government Documents Department
open access

Coal Reserves Data Base report. Final report on the Demonstrated Reserve Base (DRB) of coal in Wyoming

Description: The Coal Reserves Data Base (CRDB) Program is a cooperative data base development program sponsored by the Energy Information Administration (EIA). The objective of the CRDB Program is to involve knowledgeable coal resource authorities from the major coal-bearing regions in EIA`s effort to update the Nation`s coal reserves data. This report describes one of two prototype studies to update State-level reserve estimates. The CRDB data are intended for use in coal supply analyses and to support an… more
Date: December 5, 1991
Creator: Jones, R. W. & Glass, G. B.
Partner: UNT Libraries Government Documents Department
open access

Beam to Shell Temperature Differencees for the CC Cryostat

Description: This note documents the calculation of stresses resulting from temperature differences between the CC cryostat shell and the module array support beams, and the calculation of corresponding maximum allowable temperature differences to be monitored during the cooldown of the cryostat. A finite element model of a portion of the inner vessel shell was analyzed for a uniform temperature change. The shell was assumed to be completely restrained by the support beams. A maximum allowable temperature d… more
Date: February 5, 1991
Creator: Luther, R.
Partner: UNT Libraries Government Documents Department
open access

The implementation of a standards based heterogeneous network

Description: Computer networks, supporting an organization's activities, are prevalent and very important to the organization's mission. Implementing a heterogenous organizational network allows the staff to select the computing environment that best supports their job requirements. This paper outlines the lessons learned implementing a heterogenous computer network based on networking standards such as TCP/IP and Ethernet. Such a network is a viable alternative to a proprietary, vendor supported network an… more
Date: August 5, 1991
Creator: Eldridge, John M. & Tolendino, Lawence F.
Partner: UNT Libraries Government Documents Department
open access

Japan-U.S. Trade and Economic Relations: Bibliography-In-Brief, 1990-1991

Description: The following references to the current periodical literature are taken from CRS, public policy literature file (PPLT). Congressional users may request full text of items by phoning 707-5700. Others users should consult their local library.
Date: September 5, 1991
Creator: Howe, Robert
Partner: UNT Libraries Government Documents Department
open access

Heavy fermions and other highly correlated electron systems

Description: In this paper I given a brief summary of the achievements grouped under three main headings, namely (1) heavy-fermion, mixed-valence and Kondo systems, (2) the n-channel Kondo problem and applications, and (3) one-dimensional conductors and antiferromagnets. The list of published papers and preprints is attached to the report, as well as a list of abstracts submitted to Conferences. All these papers are new in the sense that none of them was listed in the final technical report of grant DE-FG02… more
Date: December 5, 1991
Creator: Schlottmann, P.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen