UNT Libraries Government Documents Department - 3,718 Matching Results

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open access

Neutron-induced mutation experiments. Progress report, March 1, 1975-- February 29, 1976

Description: The relative mutagenic effectiveness of neutrons of different energies were compared with x radiation in mice and Drosophila oogonia employing X-linked recessive lethal and specific locus mutation tests. The energies and doses used were 0.68 MeV, 2 MeV, and 6 MeV (250 and 500$sup 0$R), and 15 MeV (250, 500, and 1000$sup 0$R). The data thus far collected from the recessive lethal test indicate that 0.68 MeV neutrons have the highest RBE among the energies tested, followed by 6 and 2 MeV. The spe… more
Date: November 1, 1975
Creator: Abrahamson, S.
Item Type: Refine your search to only Report
open access

Elastic and strength properties of Hanford concrete mixes at room and elevated temperatures

Description: Objective was to determine the effects of long-term exposure to elevated temperatures on the strength and elastic properties of concrete mixes used in Hanford radioactive waste storage tanks. The report contains data from tests conducted on two Hanford concrete mixes to determine the modulus of elasticity, Poisson's Ratio, compressive strength, and splitting tensile strength at room temperature and elevated temperatures. All tests were made on 6-in. dia. by 12-in. long cylinders. Modulus of Ela… more
Date: June 1, 1975
Creator: Abrams, M. S.
Item Type: Refine your search to only Article
open access

Assessment study of devices from the generation of electricity from stored hydrogen

Description: A study was performed to evaluate alternative methods for the generation of electricity from stored hydrogen. The generation systems considered were low- temperature and high-temperature fuel cells, gas turbines and steam turbines. These systems were evaluated in terms of present-day technology and future (1995) technology. Of primary interest were the costs and efficiencies of the devices, the versatility of the devices toward various types of gaseous feeds, and the likelihood of commercial de… more
Date: December 1, 1975
Creator: Ackerman, J.P.; Barghusen, J.J. & Link, L.E.
Item Type: Refine your search to only Report
open access

Target preparations and thickness measurements

Description: A wide variety of isotope target preparative methods have been used, including rolling of metals, vapor deposition, electrodeposition, chemical vapor deposition, and sputtering, to obtain thin and thick films of most elements or compounds of elements in the Periodic Table. Most thin films prepared for use in self-supported form as well as those deposited on substrates require thickness measurement (atom count and distribution) and/or thickness uniformity determination before being used in nucle… more
Date: January 1, 1975
Creator: Adair, H. L. & Kobisk, E. H.
Item Type: Refine your search to only Article
open access

Destabilization of the trapped electron mode by magnetic curvature drift resonances

Description: Electron curvature drift resonances, ignored in earlier work on the trapped-electron modes, are found to exert a strong destabilizing influence in the lower collision frequency range of these instabilities. Effects arising from ion temperature gradients, shear, and finite ion gyroradius are included with these vector nebla-drifts in the analysis, and the resultant eigenvalue equation is solved by numerical procedures rather than the commonly used perturbation techniques. For typical tokamak par… more
Date: December 1, 1975
Creator: Adam, J.C.; Tang, W.M. & Rutherford, P.H.
Item Type: Refine your search to only Report
open access

LX-13 processing. Progress report, July--September 1975

Description: Research conducted during July to October 1975 on the processing and performance testing of chemical explosives is reported. Four of the six lots of continuously precipitated PETN produced last quarter have been formulated into LX-13 and evaluated for firing performance and extrudability. Detonability was improved. Three of the lots fired satisfactorily on the DV blocks; however, extrudability was reduced. Three batches of PETN were formulated this quarter to further examine LX-13 extrudability… more
Date: January 1, 1975
Creator: Adams, J. C.; Osborn, A. G. & Stallings, T. L.
Item Type: Refine your search to only Report
open access

LX-13 processing. Progress report, October--December 1975. [Effect of precipitation parameters on extrudability and detonability]

Description: Results were obtained from five LX-13 batches formulated from PETN precipitated previously by the continuous method. Extrudability results indicate that a reduced temperature improves extrudability. Detonability was improved over previous continuous batches. Three additional batches of PETN have been precipitated at reduced temperatures to evaluate the effect of temperature on extrudability and detonability.
Date: January 1, 1975
Creator: Adams, J. C.; Stallings, T. L. & Osborn, A. G.
Item Type: Refine your search to only Report
open access

Hot Fuel Examination Facility/North Facility safety report

Description: Design and safety-related construction features of the Hot Fuel Examination Facility/North, located on the Argonne--West site at the Idaho National Engineering Laboratory are described. The proposed operations, the organizational structure, and emergency plans are given. Evaluations of potential accident situations are presented and it is concluded that HFEF/N can be operated safely and without undue hazard.
Date: February 1975
Creator: Adams, R. M.; Hampson, D. C.; Ferguson, K. R. & Hylsky, E.
Item Type: Refine your search to only Report
open access

Advanced geothermal primary heat exchanger (APEX). Quarterly progress report Q-2, 1 October 1975-31 December 1975

Description: The APEX program is designed to investigate the concept that a continuously recirculating flow of fine solid particles in the brine stream will substantially retard the formation of scale in the primary heat exchanger. The primary technical effort during this reporting period has been the buildup of the test facility. Some preliminary testing has been conducted in order to establish process equipment suitability prior to completing the test facility design. Fouling experiments have also been co… more
Date: January 1, 1975
Creator: Addoms, J.F.
Item Type: Refine your search to only Report
open access

Advanced geothermal primary heat exchanger (APEX). Quarterly progress report Q-1, 1 July 1975-30 September 1975

Description: The major effort during this reporting period was directed toward performing the analytical design task and initiating the laboratory setup for the self-cleaning heat exchanger concept. Analytical design includes the selection of a suitable demonstration site, water chemistry and temperature, and thermodynamic power cycle, and parametric design and sensitivity analysis of a heat exchanger suitable for a 10 MW electric proof of concept plant. (MHR)
Date: January 1, 1975
Creator: Addoms, J.F. & Schoenman, L.
Item Type: Refine your search to only Report
open access

Field study to determine plutonium contents of wheat and soil in a warm humid area

Description: A field study was initiated in the fall of 1974 at the United States Energy Research and Development Administration's Savannah River Plant near Aiken, South Carolina, to determine the spatial and temporal variation of plutonium in soil-plant systems, with wheat as the crop of interest. The study was conducted on a field adjacent to a nuclear fuel reprocessing plant. Soil in this field was lightly contaminated with plutonium originating from atmospheric releases by the reprocessing plant during … more
Date: January 1, 1975
Creator: Adriano, D. C.; McLeod, K. W.; Pinder, J. E., III; Smith, M. E.; Boni, A. L.; Corey, J. C. et al.
Item Type: Refine your search to only Article

Miscellaneous photographs

Description: Series of twenty-six photographs of components at the Aerojet-General Corporation, including entire constructions taken out-of-doors, assembly segments, and individual components. Many of the images are close-ups of specific pieces to show detail; few of the images are labeled, although some have captions or visible tags with part numbers.
Date: 1975-23~
Creator: Aerojet-General Corporation
Item Type: Refine your search to only Photograph
open access

Development of a High Velocity Solid Particle Launcher for Laboratory Erosion Studies. [Reentry Vehicle Heat Shields]

Description: A solid particle launcher for laboratory erosion studies has been developed and successfully demonstrated. Performance of the launcher is predicted by a two-dimensional, time-dependent theoretical analysis to within the experimental uncertainty. The present device accelerates 100 μm diameter glass spheres to velocities of 2.1+/- 0.6 km/sec. The system is safe, reliable, and has a test repetition of about 2 shots/hour.
Date: March 1, 1975
Creator: Aeschliman, D. P.; Mulac, A. J.; Guzman, J. A.; Eaton, R. R. & Fox, R. L.
Item Type: Refine your search to only Report
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