182,203 Matching Results

Explore Results

Results: 1 - 24 next
open access

Advanced on-board electric vehicle charger. Final report

Description: The design and development of an on-board charger power module for use in electric vehicles is described. The module operates at 20KHz in a series resonant, half bridge configuration. Circuit design trade-offs, module performance, and solutions to the problems of acoustic noise, maintaining high power factor, circuit protection and operating reliability are discussed. The power module operates from a single phase, 240 V, 50/60 Hz utility line. Average power factor is 0.90; efficiency at maximum… more
Date: December 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Conversion of associated natural gas to liquid hydrocarbons

Description: Energy International is a leader in catalyst and process development as it relates to Fischer-Tropsch (F-T) technology. Through this activity, a concept evolved for a new technique for capturing the fuel value in the associated natural gas contained in crude oil. In the new concept, the dissolved natural gas would be processed via F-T technology to produce light hydrocarbons that would then, in one manifestation of this concept, be redissolved in the crude oil to produce a lighter crude than th… more
Date: December 31, 1979
Creator: Singleton, A.H., Cooper, P.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of Geothermal Binary Cycle Working Fluid Properties Information and Analysis of Cycles

Description: The research discussed in this report was performed at the University of Oklahoma during the period January 1, 1979 through December 31, 1979. Efforts were directed principally to the following tasks: (1) comparisons of mixture and pure fluid cascade cycles, (2) development of guidelines for working fluid selection for single boiler cycles, (3) continued evaluation of mixtures as working fluids, (4) working fluid thermophysical property correlation and presentations of properties information.
Date: December 31, 1979
Creator: Starling, Kenneth E.; Iqbal, K.Z.; Malik, Z.I.; Chu, C.T.; Ramaswamy, S.; Kumar, K.H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of high efficiency cascade solar cells. Quarterly technical progress report No. 2

Description: Research has continued in the development of selected ternary and quaternary III-V materials that are potential candidates for cascade solar cell applications. In addition, various simple and multi-junction cascade solar cell components have been fabricated and evaluated in a continuing study of several different solar cell designs (materials combinations). During the present reporting period, work has concentrated on the following major areas: GaAlAs/GaAs cell development; AlGaAsSb/GaAsSb mate… more
Date: December 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of superior liquid coolants CCF-1. Final technical report, 1 September 1978-31 December 1979

Description: A comprehensive study of four representative commercially available heat transfer fluids being used in solar systems was undertaken to establish the most cost effective fluid over the life of the system. Criteria for making the assessment were the relative results of fluid toxicity tests, fire hazards tests, collector stagnation tests, and physical property comparison data of various fluids. The specific fluids evaluated were Dow Corning SylthermTM 444 silicone, Uniroyal PAO-LV polyalphaolefin … more
Date: December 31, 1979
Creator: Hodges, R M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Direct utilization of geothermal heat in cascade application to aquaculture and greenhouse systems at Navarro College. Annual report, March 1, 1979-December 31, 1979

Description: Progress is reported on a project to use the 130/sup 0/F geothermal resource in central Texas. Potential uses include geothermal space heating, aquaculture, agricultural heating, and crop drying.
Date: December 31, 1979
Creator: Smith, K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaluation of tuff as a waste isolation medium

Description: Tuff is of interest for use as an isolation medium for high heat producing wastes because it provides highly sorptive minerals and suitable thermomechanical properties. Also, tuff is widespread in areas that offer long and deep groundwater flow paths. The occurrence and geologic/hydrologic setting of tuff are discussed. The properties of the rock are discussed and compared with other isolation media. The favorable and unfavorable aspects are presented. Also, unresolved issues are discussed alon… more
Date: December 31, 1979
Creator: Tyler, L. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Experimental and theoretical plasma physics program]. Technical progress in FY 1979

Description: This report summarizes recent technical progress in the major areas of study. Because a considerable variety of work has been performed this year they authors first give brief synopses of individual research projects categorizing them as to their relevance to the general areas of plasma stability analyses, plasma heating or basic plasma physics. Next, they discuss these projects as they relate to and support the various DOE experimental programs. The DOE experimental programs are: (1) toroidal … more
Date: December 31, 1979
Creator: Griem, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Flux pinning and flux flow studies in superconductors using flux flow noise techniques. Progress report, April 1-December 30, 1979

Description: Flux flow noise power spectra were investigated, and information obtained through such spectra is applied to describe flux flow and pinning in situations where volume pinning force data is also available. In one case, the application of noise data to PB/sub 80/In/sub 20/ samples after recovery and after high temperature annealing is discussed. This work is consistent with a recent model for flux flow noise generation. In the second case we discuss experiments designed to change the fluxoid tran… more
Date: December 31, 1979
Creator: Joiner, W.C.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Hot Springs NTMS Quadrangle, South Dakota

Description: The following report provides results from a geochemical survey for the Hot Springs quadrangle, South Dakota. Field and laboratory data are presented for 340 groundwater and 394 stream sediment samples.
Date: December 31, 1979
Creator: National Uranium Resource Evaluation Program
Item Type: Refine your search to only Report
Location: None
Partner: UNT Libraries Government Documents Department
open access

The in-plant evaluation of a uranium NDA system

Description: The Los Alamos Scientific Laboratory has an unirradiated enriched uranium reprocessing facility. Various types of solutions are generated in this facility, including distillates and raffinates containing ppm of uranium and concentrated solutions with up to 400 grams U/t. In addition to uranyl nitrate and HNO{sub 3}, the solutions may also contain zirconium, niobium, fluoride, and small amounts of many metals. A uranium solution assay system (USAS) has been installed to allow accurate and more t… more
Date: December 31, 1979
Creator: Sprinkle, J. K. Jr.; Baxman, H. R.; Langner, D. G.; Canada, T. R. & Sampson, T. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Interaction of radionuclides with geomedia from the Nevada Test Site

Description: Aqueous/solid distribution coefficients have been measured for {sup 137}Cs, {sup 85}Sr, {sup 99}Tc, {sup 152}Eu, {sup 144}Ce, {sup 238}Pu, {sup 243}Am and {sup 244}Cm on powdered argillite and hornfels obtained from the Nevada Test Site. The fluid phases included a groundwater simulant and deionized water preequilibrated with powdered argillite. Distribution coefficients for lanthanides and actinides are generally high and Eleana shale was found to effectively sorb technetium.
Date: December 31, 1979
Creator: Lynch, A.W. & Dosch, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Linear-motor drives for machine tools

Description: Conventional techniques to position moving platforms on precision machines have relied heavily on mechanical drives such as the ball-nut/lead-screw system. Unfortunately, as positioning tolerances become more and more demanding, the cyclic errors-inherent even in precision gear drives-contribute an excessive amount of positioning uncertainty. The linear-motor drive system is one approach to provide a smooth, accurate, vibration-free method for locating a moving platform. Some existing uses of l… more
Date: December 31, 1979
Creator: Barkman, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanical modeling of nuclear waste disposal in argillite at the Nevada Test Site

Description: Numerical calculations for a near surface heater experiment in argillite conducted at the Nevada Test Site were performed using the finite element code ADINA assuming a two-dimensional axisymmetric geometry. The existence and extent of the region of tensional opening of joints surrounding the heater, predicted by the mechanical model, were confirmed by posttest borehole inspection, permeability measurements, and drillback. Exrapolation of near surface heater model to repository depths reveals t… more
Date: December 31, 1979
Creator: Thomas, R. K. & Lappin, A. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model development for in situ test results in argillaceous rock

Description: Near-surface heater tests have been conducted in two different geologic settings for argillaceous rocks. The results of these tests have provided the in situ data necessary to develop the thermomechanical models for predicting the response of argillaceous rock to thermal load representative of high-level nuclear waste.
Date: December 31, 1979
Creator: Tyler, L. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mound Facility. 1978 annual report

Description: For Mound Facility, the year 1978 was one of progress marked by enhanced mission assignments and significant milestones. The thirtieth anniversary of the site was celebrated, and Monsanto Research Corporation began a new 5 year contract to operate the Mound Facility. Long-standing production assignments were strengthened, and were were given a new responsibility: to develop and produce all ceramic parts used in Mound-build products. progress toward US energy objectives was bolstered by Mound pr… more
Date: December 31, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: 1979 Marriage]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Duration: 1 minute 46 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Al Panzera]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 5:00 p.m.
Duration: 2 minutes 19 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Balloon wedding]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Duration: 1 minute 47 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Convention center]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Duration: 2 minutes 40 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Crime victims]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 6:00 p.m.
Duration: 1 minute 44 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: DWI patrol]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: December 31, 1979, 10:00 p.m.
Duration: 1 minute 46 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
Back to Top of Screen