UNT Libraries Government Documents Department - 21,487 Matching Results

Search Results

Results: 1 - 24 next
open access

Geothermal R and D Project report for October 1, 1975--December 30, 1975

Description: The Idaho National Engineering Laboratory (INEL) Geothermal Research and Development Project is conducting two major geothermal development efforts: 1) a project aimed at medium temperature (approximately 300/sup 0/F) utilization to produce electricity with supplemental direct thermal use of the energy; and 2) a low temperature (approximately 170/sup 0/F) space heating project. The first effort has progressed in the field to the successful drilling of two deep geothermal wells providing flows o… more
Date: April 1, 1976
open access

Application of pulsed electron beam vaporization to studies of UO/sub 2/. [LMFBR]

Description: A method for determining the pressure versus internal energy coordinates of the liquid-vapor saturation curve is applied to the study of UO/sub 2/. The experimental details and results of an initial series of tests are described. A comparison of the measurement results to models of the UO/sub 2/ equation of state illustrates the role of the heat capacity in describing the P--E characteristics of the state surface. A discussion of the available heat capacity information suggests that additional … more
Date: June 1, 1977
Creator: Benson, D. A.
open access

Phase 0: goal study for the technical and economic evaluation of the Compound Parabolic Concentrator (CPC) concept applied to solar thermal and photovoltaic collectors. Final report

Description: This report presents the results of a quick, six-week technical and economic evaluation of the compound parabolic concentrator (CPC) solar collector. The purpose of this effort was to provide an initial phase of a goals study that is directed toward recommending relative priorities for development of the compound parabolic concentrator concept. The findings of this study are of a very preliminary nature. Conclusions based on study findings at this depth should be considered preliminary and subj… more
Date: June 1, 1975
open access

Sensitivity of the reactor safety study consequences model to mixing heights

Description: The sensitivity to mixing height values of the consequence model used in the Reactor Safety Study has been investigated. Increasing mixing height values by a factor of 2 or decreasing by factors of 2, 5, or 10 had negligible effects on early-fatality predictions. Plume penetration of a low-lying inversion layer substantially decreases early-fatality predictions. Therefore, consequence model predictions are insensitive to mixing height values and conservative with respect to plume penetration of… more
Date: January 1, 1977
Creator: Sprung, J. L. & Church, H. W.
open access

DENSJT: statistical shell-model level density computer code description and user's manual. [In FORTRAN for CDC Cyber-70 computer]

Description: The FORTRAN code DENSJT described here is constructed to calculate the appropriate moments and dimensions needed in describing the Gaussian level density for fixed values of the total angular momentum (J) and isobaric spin (T = T/sub 0/). The input for this code is the same as in the usual shell-model codes, namely, the single-particle orbital properties and the antisymmetric two-body matrix elements. To calculate the moments for fixed values of the angular momentum (J) a method described by Gi… more
Date: July 1, 1976
Creator: Dalton, B.
open access

Photoelectron spectroscopy and Auger electron spectroscopy of solids and surfaces

Description: The use of photoelectron spectroscopy, primarily x-ray photoelectron spectroscopy, to obtain information on the electronic structure of a wide variety of solids (especially the bulk electronic structure of solids) is covered. Both valence band and core-level spectra, as well as a few cases of photon excited Auger electron spectroscopy, are employed in the investigations to derive information on N(E). The effect of several modulations inherent in the measured I(E)'s, such as final state band str… more
Date: January 1, 1976
Creator: Kowalczyk, S. P.
open access

Geothermal resources: exploration and exploitation. A bibliography

Description: This comprehensive bibliography contains 5476 citations of foreign and domestic research reports, journal articles, patents, conference proceedings, and books concerned with the exploration and exploitation of geothermal resources. The coverage dates back as far as useful references could be obtained and extends through June 1976. References are arranged in broad subject categories and are made up of complete bibliographic citations. These are followed by a listing of subject descriptors used t… more
Date: July 1, 1976
open access

Formation and study of exciplex systems: a low-pressure approach. Quarterly progress report No. 2, March 1, 1976--May 31, 1976

Description: A system is being developed for forming and studying excimers from the van der Waals ground states of gases. Status of the apparatus is reported. Calculations were made for concentration of dimers in cluster beams of noble gas mixtures. An experiment using a tuned laser to study the resonant absorption of excimers is proposed. (DLC)
Date: January 1, 1976
Creator: Sanzone, G.
open access

OSCIL: one-dimensional spring-mass system simulator for seismic analysis of high temperature gas cooled reactor core

Description: OSCIL is a program to predict the effects of seismic input on a HTGR core. The present model is a one-dimensional array of blocks with appropriate spring constants, inter-elemental and ground damping, and clearances. It can be used more generally for systems of moving masses separated by nonlinear springs and dampers.
Date: January 1, 1976
Creator: Lasker, L. (ed.)
open access

Development of methods and procedures for high rate low energy expenditure fabrication of solar cells. Final report

Description: A one year program to develop a new concept for silicon solar cell production based upon the use of pulsed electron beam processes combined with ion implantation has been completed. Feasibility of producing solar cells at high speed by a simplified vacuum-room temperature processing sequence has been demonstrated. The method has many advantages, particularly for large scale production at lowest possible cost.
Date: November 1, 1976
Creator: Kirkpatrick, A. R.; Minnucci, J. A. & Greenwald, A. C.
open access

Evaluation of environmental data relating to selected nuclear power plant sites: the Three Mile Island Nuclear Station Site

Description: Environmental monitoring data for the years 1973 and 1974 pertaining to the Three Mile Island Nuclear Station Unit 1, which began operation in early 1974, were analyzed by the most practical qualitative and quantitative methods. Terrestrial biotic resources were considered for this plant. The effects of the operation of Unit 1 on the local terrestrial organisms were found to be undetectable. Although the plant has not operated long enough to reveal long-term deleterious effects, the present ind… more
Date: August 1, 1976
Creator: Murarka, I. P.
open access

Natural gas massive hydraulic fracture research and advanced technology project. Quarterly report: February 1977--April 1977

Description: Two field experiments were conducted with the surface electrical potential measurement system. The first was an MHF experiment with G.P.E. (Gas Producing Enterprises) on March 15 south of Vernal, Utah. This fracture was a joint ERDA-industry funded experiment. Approximately 640,000 gallons of fluid and 1.1 million pounds of proppant were injected into multilayered gas pay zones from a depth of 6500 feet to 8000 feet. This analysis of the data has produced several new and different concepts rela… more
Date: July 1, 1977
Creator: Schuster, C. L. & Northrop, D. A.
open access

Radiochemical analyses of soil and vegetation samples taken from the Hanford environs, 1971--1976

Description: Soil and vegetation have routinely been collected on the Hanford Site and surrounding environs as one method of monitoring radionuclide concentrations potentially attributable to Hanford operations. With the exception of a few locations, the data indicate that Hanford operations have made no significant contribution to existing radionuclide concentrations in soil and vegetation. Most of the activity seen in the samples can be attributed to natural causes or worldwide atmospheric fallout. The fe… more
Date: June 1, 1977
Creator: Miller, M. L.; Fix, J. J. & Bramson, P. E.
open access

Compilation of yields from neutron-induced fission of /sup 232/Th, /sup 235/U, /sup 236/U, /sup 237/Np, /sup 238/U, and /sup 239/Pu measured radiochemically at Los Alamos

Description: Radiochemically measured relative fission yields have been compiled for targets of /sup 232/Th, /sup 235/U, /sup 236/U, /sup 237/Np, /sup 238/U, and /sup 239/Pu that were irradiated with neutrons, the average energies of which were in the 0.0253-eV to 14-MeV range. The yields were examined for consistency by means of the two-mode-of-fission hypothesis. The circumstances associated with inconsistencies were investigated, but the yields in questions were rejected only when good cause was found. F… more
Date: October 1, 1975
Creator: Ford, G. P. & Norris, A. E.
open access

Elastic p-/sup 4/He scattering near 1 GeV

Description: New 1.029 GeV p-/sup 4/He data from an Argonne-UCLA-Minnesota collaboration are in excellent agreement with existing multiple diffraction theory predictions. The theoretical calculation includes spin and isospin dependence of the ..delta.. intermediate state process that fills the first diffraction minimum. The recently normalized Saclay data and the older Brookhaven data disagree with our calculation and the new data.
Date: February 1, 1977
Creator: Wallace, S. J. & Alexander, Y.
open access

Hydrology of some deep mines in Precambrian rocks

Description: A number of underground mines were investigated during the summer of 1975. All of them are in Precambrian rocks of the Lake Superior region. They represent a variety of geologic settings. The purpose of the investigations was to make a preliminary study of the dryness, or lack of dryness of these rocks at depth. In other words, to see if water was entering the deeper workings through the unmined rock by some means such as fracture or fault zones, joints or permeable zones. Water entering throug… more
Date: October 1, 1975
Creator: Yardley, D. H.
open access

Directional growth of pearlite in iron--carbon eutectoid alloys. [Rate]

Description: Pearlite was transformed directionally by passing a zone of austenite through high purity Fe--C alloy bars of eutectoid composition. Using a small embedded thermocouple, the temperature gradient at both the austenitizing edge and the pearlite transformation edge of the austenitic zone was recorded. A sharp change in gradient occurred due to the change in thermal conductivity between the phases at each interface. The point of change in gradient enabled the temperature of both interfaces to be de… more
Date: February 1, 1977
Creator: Pearson, D. D.
Back to Top of Screen