405 Matching Results

Search Results

Results: 1 - 24 next
open access

Comparison of TRAC and RELAP5 reactor system calculations for a DEGB LOCA in K-14. 1

Description: A comparison of TRAC and RELAP5 predictions of steady-state and DEGB LOCA results (FI phase) for K-14.1 has been made. Both codes had been previously benchmarked against 1985 L Reactor AC Flow data and were under configuration control. The purpose of the code-to-code comparison is to provide insight on the transient uncertainty in TRAC plenum and tank bottom plenum pressures. The comparisons focus on LOCA results between 0.5 and 2.0 s, which is the primary period of interest for Flow Instabilit… more
Date: September 1, 1990
Creator: Griggs, D.P. (Westinghouse Savannah River Co., Aiken, SC (United States)) & Liebmann, M.L. (Wais and Associates (United States))
Partner: UNT Libraries Government Documents Department
open access

Genes and gene expression: Localization, damage and control -- A multilevel and inter-disciplinary study

Description: All projects are working toward a goal for describing the three dimensional nuclear topography in terms of relative spatial relationships among genes (specific DNA sequence). Methods are now being perfected to detect these genes, quantitatively and spatially, to perturb these genes specifically, and to measure the perturbation in order to assure specificity. We are developing methods to assay, after perturbation of the target DNA within living cells, whether or not only the target sequence are … more
Date: September 1, 1990
Creator: Ts'o, P.O.P.
Partner: UNT Libraries Government Documents Department
open access

Seismic analysis of reactor exhaust air filter compartment

Description: The Filter Compartment (FC) in this analysis is a generic reactor airborne activity confinement filter compartment which possesses all the essential physical and mechanical properties of the Savannah River Site (SRS) confinement filters of Reactor Buildings K, L, and P. The filters belong to the Airborne Activity Confinement System (AACS). These filters absorb a significant amount of radioactive effluents from the exhausting air. The seismic excitation is input indirectly from the output of the… more
Date: September 24, 1990
Creator: Gong, Chung; Funderburk, E.L. & Jerrell, J.W.
Partner: UNT Libraries Government Documents Department
open access

Thulium-170 heat source

Description: An isotopic heat source is formed using stacks of thin individual layers of a refractory isotopic fuel, preferably thulium oxide, alternating with layers of a low atomic weight diluent, preferably graphite. The graphite serves several functions: to act as a moderator during neutron irradiation, to minimize bremsstrahlung radiation, and to facilitate heat transfer. The fuel stacks are inserted into a heat block, which is encased in a sealed, insulated and shielded structural container. Heat pipe… more
Date: September 6, 1990
Creator: Walter, Carl E.; Van Konynenburg, Richard & VanSant, James H.
Partner: UNT Libraries Government Documents Department
open access

H-Area Seepage Basins: Groundwater quality assessment report, Savannah River Site

Description: During the second quarter of 1990 the wells which make up the H-Area Seepage Basins (H-HWMF) monitoring network were sampled. Laboratory analyses were performed to measure levels of hazardous constituents, indicator parameters, tritium, nonvolatile beta, and gross alpha. A Gas Chromatograph Mass Spectrometer (GCMS) scan was performed on all wells sampled to determine any hazardous organic constituents present in the groundwater. The primary contaminants observed at wells monitoring the H-Area S… more
Date: September 1, 1990
Partner: UNT Libraries Government Documents Department
open access

L to H mode transitions and associated phenomena in divertor tokamaks

Description: This is the final report for the research project titled L to H Mode Transitions and Associated Phenomena in Divertor Tokamaks.'' The period covered by this project is the fiscal year 1990. This report covers the development of Advanced Two Chamber Model.
Date: September 1, 1990
Creator: Punjabi, A. (Hampton Univ., VA (United States))
Partner: UNT Libraries Government Documents Department
open access

NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to investigate the magnetic nature of the higher alcohol synthesis catalyst-Cu/Co supported on specific supports: chromia and titania with and without an alkali metal promoter, and examine the relations between catalytic and magnetic properties.
Date: September 14, 1990
Partner: UNT Libraries Government Documents Department
open access

Selected problems in experimental intermediate energy physics

Description: The objectives of this research program are to: investigate forefront problems in experimental intermediate energy physics; educate students in this field of research; and, develop the instrumentation necessary to undertake this experimental program. Generally, the research is designed to search for physical processes which cannot be explained by conventional models of elementary interactions. This includes the use of nuclear targets where the nucleus provides a many body environment of strongl… more
Date: September 1, 1990
Creator: Mayes, B.W.; Hungerford, E.V. & Pinsky, L.S.
Partner: UNT Libraries Government Documents Department
open access

Description of the National Highway Planning Network

Description: The National Highway Planning Network is a data base of major highways in the continental United States. It is a foundation for analytic studies of highway performance, for vehicle routing and scheduling problems, and for mapping purposes. The network is based on a set of roadways digitized from the National Atlas by the US Geological Survey. It has been enhanced at Oak Ridge National Laboratory by adding additional roads and attribute detail and correcting topological errors to produce a true … more
Date: September 1, 1990
Creator: Peterson, B.E.
Partner: UNT Libraries Government Documents Department
open access

A Tutorial on the Construction of High-Performance Resolution/Paramodulation Systems

Description: Over the past 25 years, researchers have written numerous deduction systems based on resolution and paramodulation. Of these systems, a very few have been capable of generating and maintaining a formula database "containing more than just a few thousand clauses. These few systems were used to explore mechanisms for rapidly extracting limited subsets of relevant" clauses. We have written this tutorial to reflect some of the best ideas that have emerged and to cast them in a form that makes them … more
Date: September 1990
Creator: Butler, R. & Overbeek, R.
Partner: UNT Libraries Government Documents Department
open access

A Theory for Fluidelastic Instability of Tube-Support-Plate Inactive Modes

Description: Fluid-elastic instability of loosely supported tubes, vibrating in a tube-support-plate (TSP) inactive mode, is suspected to be one of the main causes of tube failure in some operating steam generators and heat exchangers. This report presents a mathematical model for fluid-elastic instability of loosely supported tubes exposed to non-uniform cross-flow. The model incorporates all motion-dependent fluid forces based on the unsteady flow theory. In the unstable region associated with a TSP-inact… more
Date: September 1990
Creator: Cai, Y.; Chen, Shoei-Sheng & Chandra, S.
Partner: UNT Libraries Government Documents Department
open access

Westinghouse Hanford Company effluent report for 300, 400, and 1100 Area operations for calendar year 1989

Description: The report tabulates both radioactive and nonradioactive liquid and airborne effluent data for 300, 400, and 1100 Area operations at the Hanford Site. The 300 Area is primarily a research and development area. The 400 Area houses the Fast Flux Test Facility. The 1100 Area contains central stores and vehicle maintenance facilities. Releases to the environment from Westinghouse Hanford Company operations within these areas during calendar year 1989 were both consistent with previous years and wit… more
Date: September 1, 1990
Creator: McCarthy, M. J.
Partner: UNT Libraries Government Documents Department
open access

Nonferrous Metals: Industry Structure

Description: This report profiles the structures of four domestic nonferrous metals industries (copper, aluminurn, lead, and zinc) and the changes they have undergone since 1980. The study also outlines the U.S. position in the world markets.
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Children's Dental Services Under the Medicaid Program

Description: The report discusses the oral health of children eligible for Medicaid, the House Committee on Energy and Commerce and its Subcommittee on Health and the Environment requested OTA to determine whether children eligible for Medicaid are provided at least a minimum level of dental care. This study compares the dental manuals of seven State Medicaid programs with a set of “basic’ dental services (which comprise shared components of various well-accepted dental guidelines) to see if States allow th… more
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Health Care in Rural America

Description: This report is about access of people in rural America to basic health care services. This report focuses on trends in the availability of primary and acute health care in rural areas and factors affecting those trends.
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Unconventional Cancer Treatments

Description: This report describes the unconventional cancer treatments that are most used by U.S. cancer patients; it describes the way in which people find out about them and how much they pay for them; reviews the claims made for them and the information base in support of the claims; suggests possible ways of generating valid information about their safety and effectiveness; and presents the legal issues surrounding unconventional treatments that have brought civil and criminal litigation to bear on the… more
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Worker Training: Competing in the New International Economy

Description: This report focuses on the training given to employed workers both from the standpoint of the competitiveness of U.S. industry and from the standpoint of the individual worker who may need training to advance. Most workers who get training get it from their employer, and much of the report looks at the employer provided training system. The message of this report is that the debate about national training policies needs to be broadened to encompass not only training programs for the economicall… more
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Electronic Bulls and Bears: U.S. Securities Markets and Information Technology

Description: This report responds to requests by the House Committee on Energy and Commerce and the House Committee on Government Operations to assess the role that communication and information technologies play in the securities markets. The Committee desired a benchmark for gauging progress made toward the national market system envisioned by the 1975 Act. This report assesses the current use of information technology by U.S. securities exchanges and over-the-counter dealers, by related futures and optio… more
Date: September 1990
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department
open access

Hawaii Deep Water Cable Program: Executive Summary

Description: The Hawaii Deep Water Cable Program has succeeded unequivocally in determining the feasibility of deploying a submarine power cable system between the islands of Hawaii and Oahu. Major accomplishments of the program include designing, fabricating and testing an appropriate power cable, developing an integrated system to control all aspects of the cable laying operation, and testing all deployment systems at sea in the most challenging sections of the route.
Date: September 1, 1990
Partner: UNT Libraries Government Documents Department
open access

A Status Report of Hawaiian Hawk Nesting Activities at the Proposed Well Site No. 2

Description: On August 11, 1990 during an ornithological survey at the True/Mid Pacific Geothermal Venture proposed well site No.2, a Hawaiian hawk (Buteo solitarius) nest with a nestling was found approximately 430 feet from the proposed well pad clearing. The U.S. Fish and Wildlife Service and the State of Hawaii have listed the Hawaiian hawk as an endangered species. Future development in this area could be impacted by the presence of this endangered avian species and its nest in such close proximity to … more
Date: September 8, 1990
Creator: Jeffrey, Jack
Partner: UNT Libraries Government Documents Department
open access

Early experience with the Intel iPSC/860 at Oak Ridge National Laboratory

Description: This report summarizes the early experience in using the Intel iPSC/860 parallel supercomputer at Oak Ridge National Laboratory. The hardware and software are described in some detail, and the machine's performance is studied using both simple computational kernels and a number of complete applications programs. 21 refs., 7 figs., 3 tabs.
Date: September 1, 1990
Creator: Heath, M. T.; Geist, G. A. & Drake, J. B.
Partner: UNT Libraries Government Documents Department
open access

Advanced development of the spectrum sciences Model 5005-TF, single-event test fixture

Description: This report summarizes the advanced development of the Spectrum Sciences Model 5005-TF, Single-Event Test Fixture. The Model 5005-TF uses a Californium-252 (Cf-252) fission-fragment source to test integrated circuits and other devices for the effects of single-event phenomena. Particle identification methods commonly used in high-energy physics research and nuclear engineering have been incorporated into the Model 5005-TF for estimating the particle charge, mass, and energy parameters. All sing… more
Date: September 1, 1990
Creator: Ackermann, M.R.; Browning, J.S. (Sandia National Labs., Albuquerque, NM (USA)); Hughlock, B.W. (Boeing Aerospace and Electronics Co., Seattle, WA (USA)); Lum, G.K. (Lockheed Missiles and Space Co., Sunnyvale, CA (USA)); Tsacoyeanes, W.C. (Draper (Charles Stark) Lab., Inc., Cambridge, MA (USA)) & Weeks, M.D. (Spectrum Sciences, Inc., Santa Clara, CA (USA))
Partner: UNT Libraries Government Documents Department
open access

Technical publication transfer test with Vitro Corporation: MIL-M-28001 (SGML) and MIL-D-28000 Class 1 (IGES)

Description: The purpose of the informal test reported in this Quick Short Test Reports was to analyze Vitro Corporation's interpretation and use of the CALS standards in transferring technical publications data. Vitro used its CALS Technical Data Interchange System to produce data in accordance with the Standards and delivered it to the CTN technical staff on a 9-track magnetic tape.
Date: September 18, 1990
Partner: UNT Libraries Government Documents Department
Back to Top of Screen