Partner
UNT Libraries Special Collections
3,843
Oklahoma Historical Society
3,284
UNT Libraries Government Documents Department
267
UT San Antonio Libraries Special Collections
211
Texas Historical Commission
183
Dublin Public Library
105
Sterling Municipal Library
103
Brownwood Public Library
93
Elm Fork Natural Heritage Museum
87
UNT Libraries
78
140 More
Collection
KXAS-NBC 5 News Collection
3,699
Oklahoma Publishing Company Photography Collection
2,381
Texas Digital Newspaper Program
1,758
Oklahoma Digital Newspaper Program
972
Tocker Foundation Grant
919
Texas Cultures Online
221
Institute of Texan Cultures Texas Folklife Festival Collection
197
The Oklahoma City Times
180
Office of Scientific & Technical Information Technical Reports
125
Chickasha Newspaper Collection
120
210 More
Degree Department
Country
States
Decade
Year
Month
Day
Results:
1 - 24 of
9,841
next
Light Absorption and Scattering Mechanisms in Laser Fusion Plasmas
The picture of laser light absorption and scattering which is emerging from theory and computer simulation studies of laser-plasma interactions is described. On the subject of absorption, we discuss theoretical and experimental evidence that resonance absorption in a steepened density profile is a dominant absorption mechanism. Recent work also indicates the presence of critical surface ripples, which we study using two and three dimensional computer simulations. Predictions of hot electron spectra due to resonance absorption are described, as are effects of plasma outflow. We then discuss two regimes where stimulated scattering may occur. Brillouin scattering is expected in the underdense target blow-off, for long laser pulses, and is limited by ion heating. Raman scattering in the background gas of a reactor target chamber is predicted to be at most a 10 percent effect for 1 ..mu..m lasers.
Date:
October 4, 1977
Creator:
Barnes, C.; Estabrook, K. G.; Kruer, W. L.; Langdon, A. B.; Lasinski, B. F.; Max, C. E. et al.
Object Type:
Article
System:
The UNT Digital Library
Exploding pusher performance at fixed laser power, a theoretical model
A model for the physics of exploding pusher targets is presented which compares favorably with the predictions of the complex simulation code, LASNEX.
Date:
October 4, 1977
Creator:
Rosen, M.D. & Nuckolls, J.H.
Object Type:
Article
System:
The UNT Digital Library
Proposed Tax Reform: Summaries of items included in the Tentative Decisions of the Committee on ways and means, House of representatives 93rd congress.
This report is about Proposed Tax Reform: Summaries of items included in the Tentative Decisions of the Committee on ways and means, House of representatives 93rd congress.
Date:
November 4, 1974
Creator:
Drake, Susan L.
Object Type:
Report
System:
The UNT Digital Library
Report of Group II-2: Running at ISA
A discussion is given of the anticipated operating conditions at the ISABELLE storage rings. Communications between experimental and control areas are considered, and beam luminosity monitoring is discussed. Running conditions and expected problems are outlined. (PMA)
Date:
August 4, 1977
Creator:
Chen, M.; Herrera, J. C.; Littenberg, L.; Thorndike, A.; Ogren, H.; Potter, K. et al.
Object Type:
Article
System:
The UNT Digital Library
Simple scaling model for exploding pusher targets
A simple model has been developed which when normalized by experiment or Lasnex calculations can be used to scale neutron yields for variations in laser input power and pulse length and target radius and wall thickness. The model also illucidates some of the physical processes occurring in this regime of laser fusion experiments. Within certain limitations on incident intensity and target geometry, the model scales with experiments and calculations to within a factor of two over six decades in neutron yield.
Date:
November 4, 1977
Creator:
Storm, E. K.; Larsen, J. T.; Nuckolls, J. H.; Ahlstrom, H. G. & Manes, K. R.
Object Type:
Article
System:
The UNT Digital Library
Ocean thermal energy conversion (OTEC) power system development. Preliminary design report, Appendices, Part 1 (Final)
The objective of this project is the development of a preliminary design for a full-sized, closed cycle, ammonia power system module for the 100 MWe OTEC demonstration plant. In turn, this demonstration plant is to demonstrate, by 1984, the operation and performance of an Ocean Thermal Power Plant having sufficiently advanced heat exchanger design to project economic viability for commercial utilization in the late 1980's and beyond. Included in this power system development are the preliminary designs for a proof-of-concept pilot plant and test article heat exchangers which are scaled in such a manner as to support a logically sequential, relatively low-cost development of the full-scale power system module. The conceptual designs are presented for the demonstration plant power module, the proof-of-concept pilot plant, and for a pair of test article heat exchangers. Costs associated with the design, development, fabrication, checkout, delivery, installation, and operation are included. The accompanying design and producibilty studies on the full-scale power system module project the performance/economics for the commercial plant. This section of the report contains appendices on the developed computer models, water system dynamic studies, miscellaneous performance analysis, materials and processes, detailed equipment lists, turbine design studies, tube cleaner design, ammonia leak detection, …
Date:
December 4, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Assessment of a small pressurized water reactor for industrial energy
An evaluation of several recent ERDA/ORNL sponsored studies on the application of a small, 365 MW(t) pressurized water reactor for industrial energy is presented. Preliminary studies have investigated technical and reliability requirements; costs for nuclear and fossil based steam were compared, including consideration of economic inflation and financing methods. For base-load industrial steam production, small reactors appear economically attractive relative to coal fired boilers that use coal priced at $30/ton.
Date:
October 4, 1977
Creator:
Klepper, O. H.; Fuller, L. C. & Myers, M. L.
Object Type:
Report
System:
The UNT Digital Library
Potassium vapor topping cycle. Technical progress report, April 1--June 30, 1977
The potassium vapor topping cycle is a concept for increasing the efficiency of the Rankine vapor cycle by raising the peak temperature by employing a potassium vapor cycle with a turbine inlet temperature of 1500 to 1600/sup 0/F (815 to 870/sup 0/C) in which the waste heat rejected from the condensing potassium vapor is transferred to boiling water and steam in a conventional steam cycle. An efficiency of about 50% is calculated for this cycle with a natural circulation potassium boiler fired by gas or oil. An Energy Research and Development Administration (ERDA) program is under way at Oak Ridge National Laboratory (ORNL) to build a full-scale potassium boiler tube bundle and burner module and test it with water and then potassium. Progress in this program is reported. The design work necessary for the installation of the potassium system was completed during the quarter. Fabrication of the potassium system components was finished. Installation of the condenser enclosure was completed and the drain tank was installed. Construction work on the equipment tower was completed.
Date:
October 4, 1977
Creator:
Holcomb, R. S.
Object Type:
Report
System:
The UNT Digital Library
Preliminary evaluation of fluid chemistry in the East Mesa KGRA
One of the major problems needing consideration when bringing a geothermal field into production is the anticipation and control of mineral precipitation in both the producing formations and production equipment. Prediction of the chemical interactions between natural multicomponent thermal fluids and the minerals comprising a producing formation can be accomplished by the study of equilibrium models approximating the natural system. Models are constructed from theoretically and experimentally derived thermodynamic data for the involved minerals and aqueous species. This equilibrium modeling approach was applied to the rock-water system at the East Mesa geothermal area in the Imperial Valley of California. Results of petrographic and fluid analyses are given. (JGB)
Date:
October 4, 1976
Creator:
Hoagland, J.R.
Object Type:
Report
System:
The UNT Digital Library
Quality assurance program plan applicable to the KIPS technology verification phase
This Quality Program Plan describes the manner in which the Energy Systems Unit of the Advanced Technology Group Division of Sunstrand Corporation applies its Quality Assurance Program and Systems to control and assure commpliance to the Quality requirements in accordance with NRA-1, dated July 1, 1977, in support of the Kilowatt Isotope Power Systems (KIPS) Program Technology Verification Phase.
Date:
October 4, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Equation of state of vanadium. [To 3. 39 Mbar and 5 x 10/sup 4/ eV temperature]
A new, wide-range equation of state (EOS) for vanadium is presented. The generation of this EOS was of a fast-response nature. That is, the data base was constructed very rapidly, the analysis was very cursory, and it was inserted into the Bi-linear Logorithm (BLL) EOS library in 3 to 5 days. The composite theoretical model incorporates condensed matter, ionization equilibrium, and multiphase physics. The theoretical EOS was compared with all available high-temperature and high-pressure data for vanadium; good agreement was obtained. The welting on the Hugoniot could be observed because the Kopyshev gamma nuclear correction was used to generate the high-density region. 8 figures, 1 table.
Date:
January 4, 1978
Creator:
Wong, L.
Object Type:
Report
System:
The UNT Digital Library
Review of FFTF and CRBRP control rod systems designs
The evolution of the primary control rod system design for FFTF and CRBR, beginning with the initial choice of the basic concepts, is described. The significant component and systems tests are reviewed together with the test results which referenced the development of the CRBR primary control rod system design. Modifications to the concepts and detail designs of the FFTF control rod system were required principally to satisfy the requirements of CRBR, and at the same time incorporating design refinements shown desirable by the tests.
Date:
October 4, 1977
Creator:
Pitterle, T. A. & Lagally, H. O.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of regional effects of effluents from uranium production in New Mexico
The Grants Uranium Region is a 2500 mile area of northcentral New Mexico which has produced about 40 percent of all domestic uranium, and holds over one-half of the current reserves. The increasing demand for uranium to fuel commercial nuclear power plants is resulting in rapid growth of the uranium industry and economic, social, and environmental changes are occurring. One of the environmental issues of this region is the concern for eventually unacceptable levels of air and water pollution from effluents from uranium mill tailings piles. This study addresses these potential impacts in relation to industrial environmental control practices, siting features, and other regional/temporal variables, including rates of production, locations and sizes of new mills, and population distributions.
Date:
October 4, 1977
Creator:
Wilson, D.W.
Object Type:
Report
System:
The UNT Digital Library
Vacuum system for the Tandem Mirror Experiment
The Tandem Mirror Experiment (TMX) under construction at LLL is a Q-enhancement experiment using two mirror fields to ''plug'' a central solenoid field. Neutral beam injection supplies the energetic neutrals to the plug regions with attendant quantities of cold gas. The vacuum vessel consists of two large stainless steel tanks, which house the plug coils, joined by an aluminum central cell tank, which fits inside the existing solenoid coils from the 2XIIB experiment. The plug tanks are subdivided into regions for differential pumping of the source gas by liquid-nitrogen- or water-cooled liners. The liners are gettered by Ti--Ta wire sublimators of the 2XIIB type, using 2XIIB power supplies, to supply the necessary high-speed surface pumping. The roughing vacuum system consists of mercury vapor diffusion pumps backed by Roots-type blowers.
Date:
October 4, 1977
Creator:
Atkinson, D.P.; Calderon, M.O. & Nagel, R.J.
Object Type:
Article
System:
The UNT Digital Library
Integrated system for production of neutronics and photonics calculational constants. Volume 10, Revision 1. Neutron-induced interactions: tabulated experimental data
We provide, on microfiche records, tabulated values for data points in the Experimental Cross-Section Information Library (ECSIL). The microfiche records also include corresponding bibliographic information and data indexes. ECSIL now contains 1,600,000 neutron-cross-section data points.
Date:
July 4, 1976
Creator:
MacGregor, M.H.; Cullen, D.E.; Howerton, R.J. & Perkins, S.T.
Object Type:
Report
System:
The UNT Digital Library
Pressure vessel fracture studies pertaining to a PWR LOCA-ECC thermal shock: experiments TSE-3 and TSE-4 and update of TSE-1 and TSE-2 analysis
The LOCA-ECC Thermal Shock Program was established to investigate the potential for flaw propagation in pressurized-water reactor (PWR) vessels during injection of emergency core coolant following a loss-of-coolant accident. Studies thus far have included fracture mechanics analyses of typical PWRs, the design and construction of a thermal shock test facility, determination of material properties for test specimens, and four thermal shock experiments with 0.53-m-OD (21-in.) by 0.15-m-wall (6-in.) cylindrical test specimens. In the first experiment, initiation was not expected and did not occur, although there was a small amount of subcritical crack growth. In the second experiment, initiation of a semicircular flaw took place as expected; the final length along the surface was about four times the initial length, but there was no radial growth. The third and fourth experiments were similar, and the long axial flaw initiated in good agreement with predictions.
Date:
November 4, 1977
Creator:
Cheverton, R.D. & Bolt, S.E.
Object Type:
Report
System:
The UNT Digital Library
Measured air overpressures, soil-particle pressures, and slumps during the pre-ASIAGO U2Ar stemming experiment
On November 15, 1976, Lawrence Livermore Laboratory completed its first comprehensive stemming experiment for measuring downhole parameters while varying fill material and rate. Stemming can be defined as backfilling a hole in which a device has been placed to prevent leakage of radioactive materials or gases to the surface. A computer code is being developed for stemming operations, and this experiment was designed to measure parameters under different stemming conditions so the code could be verified and modified. The experiment was conducted in the lower half of a steel-cased, 4-ft-diam, 2000-ft-deep hole at Nevada Test Site. The two stemming materials used in the experiment, Overton sand and LLL II mix, were tested at three fill rates. Significant results of this experiment included successful measurement of downhole air overpressures, vertical and horizontal soil-particle pressures, and temperature. Vertical soil-particle pressures were higher than expected. All surface measurements were valid. The slump-displacement measurements system provided a timing mark to indicate the occurrence of a slump. A major slump occurred on the third day of stemming; a minor slump occurred on the fourth day.
Date:
January 4, 1978
Creator:
Freynik, H.S. Jr.; Roach, D.R. & Dittbenner, G.R.
Object Type:
Report
System:
The UNT Digital Library
Automated laser fusion target production concept
A target production concept is described for the production of multilayered cryogenic spherical inertial confinement fusion targets. The facility is to deliver targets to the reactor chamber at rates up to 10 per second and at costs consistent with economic production of power.
Date:
October 4, 1977
Creator:
Hendricks, C.D.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0236.0271]
Photograph taken for a story in the Daily Oklahoman newspaper. Caption: "With the help of Pat Connor, right, instructor, students Barbara McEntire and Carol Merrell diagnose an engine."
Date:
June 4, 1973
Creator:
Artman, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0302.0313]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Honoree at a coffee given recently by the university of Oklahoma Medical Center Faculty Woman's Club was Mrs. James L. Dennis."
Date:
September 4, 1970
Creator:
Taylor, Robert
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0415.0202]
Photograph taken for a story in the Daily Oklahoman newspaper.
Date:
March 4, 1973
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[BASEMENT BOX 66.0042]
Caption: "Firemen survey ruins of Zestee Food Co., 2700 S Western, where fire caused an estimated $350,000 damage today." Firemen inspect remains of building after fire.
Date:
July 4, 1970
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0233.0432]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Mrs. Josephine Massey and Guy Collins Jr., will receive the Frederick Most Useful Citizen Award for their outstanding community achievements."
Date:
February 4, 1970
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0317.0102]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "show by Mrs. Bud Dunbar on her trip to Europe will be on the program when the Oklahoma City Movie Makers Club meets."
Date:
April 4, 1972
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History