Partner
Oklahoma Historical Society
3,002
UNT Libraries Special Collections
1,748
Texas Historical Commission
505
UNT Libraries Government Documents Department
291
Sterling Municipal Library
103
Deaf Smith County Library
69
UNT Libraries
69
Carl Albert Congressional Research and Studies Center
62
Hopkins County Genealogical Society
49
UT San Antonio Libraries Special Collections
46
125 More
Collection
Oklahoma Publishing Company Photography Collection
2,305
KXAS-NBC 5 News Collection
1,561
Texas Digital Newspaper Program
1,530
Oklahoma Digital Newspaper Program
786
Tocker Foundation Grant
687
THC National Register Collection
482
Office of Scientific & Technical Information Technical Reports
154
Chickasha Newspaper Collection
119
The Baytown Sun
103
Altus Times-Democrat
100
198 More
Degree Department
States
Decade
Month
Day
Results:
1 - 24 of
7,294
next
Technology for large tandem mirror experiments
Construction of a large tandem mirror (MFTF-B) will soon begin at Lawrence Livermore National Laboratory (LLNL). Designed to reach break-even plasma conditions, the facility will significantly advance the physics and technology of magnetic-mirror-based fusion reactors. This paper describes the objectives and the design of the facility.
Date:
September 4, 1980
Creator:
Thomassen, K.I.
Object Type:
Article
System:
The UNT Digital Library
Review of proposed EPA ambient lead criteria standard document. Final report. Task assignment No. 10
The proposed October 1983 EPA ambient lead criteria document, Air Quality Criteria for Lead is reviewed from the perspective of DOE's policies and programs and addresses potential impacts on energy production and energy-intensive industries. Following an introduction, the study is organized in five subsequent sections. Section 2.0 addresses environmental and health effects of exposure to lead. Section 3.0 reviews sources of lead emissions. Section 4.0 presents information on lead concentrations in ambient air. Section 5.0 examines dose-effect relationships among lead emissions, ambient air concentrations and blood lead levels. Section 6.0 presents Radian's evaluation of the regulatory implications of the criteria document and the information it provides. 10 figures, 11 tables.
Date:
March 4, 1984
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Analysis of x-ray production in TMX upgrade
TMX Upgrade (TMX-U), a tandem mirror experiment at LLNL, will use high power microwaves for electron cyclotron resonant heating (ECRH). As demonstrated on Elmo Bumpy Torus (EBT) and related experiments which use similar heating techniques, high energy electron populations are created. In these devices, which run CW, significant x-ray production occurs and adequate shielding must be provided for personnel protection. TMX-U is a pulsed experiment; however, significant x-ray production is expected from the 50 keV mean energy electron population. In this report the expected x-ray generation is calculated and the provisions for shielding are described. Based upon these calculations, as well as scaling estimates from other devices, the provided shielding is shown to be adequate for hot electron temperatures of interest for the experiment.
Date:
February 4, 1982
Creator:
Stallard, B. & Stephens, L.
Object Type:
Report
System:
The UNT Digital Library
Preliminary plan for the development of geothermal energy in the town of Hawthorne, Nevada
Site characteristics pertinent to the geothermal development are described, including: physiography, demography, economy, and goals and objectives of the citizens as they relate to geothermal development. The geothermal reservoir is characterized on the basis of available information. The probable drilling depth to the reservoir, anticipated water production rates, water quality, and resource temperature are indicated. Uses of the energy that seem appropriate to the situation both now and in the near future at Hawthorne are described. The essential institutional requirements for geothermal energy development are discussed, including the financial, environmental, and legal and regulatory aspects. The various steps that are necessary to accomplish the construction of the geothermal district heating system are described.
Date:
November 4, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Proton decay: 1982
Employing the current world average ..lambda../sub MS/ = 0.160 GeV as input, the minimal Georgi-Glashow SU(5) model predicts sin/sup 2/theta/sub W/(m/sub W/) = 0.214, m/sub b//m/sub tau/ approx. = 2.8 and tau/sub p/ approx. = (0.4 approx. 12) x 10/sup 29/ yr. The first two predictions are in excellent agreement with experiment; but the implied proton lifetime is already somewhat below the present experimental bound. In this status report, uncertainties in tau/sub p/ are described and effects of appendages to the SU(5) model (such as new fermion generations, scalars, supersymmetry, etc.) are examined.
Date:
March 4, 1982
Creator:
Marciano, William J.
Object Type:
Article
System:
The UNT Digital Library
Magnet power control system for the Tandem Mirror Experiment-Upgrade
This paper describes the desktop computer/CAMAC-based system that controls the power source for the Tandem Mirror Experiment-Upgrade (TMX-U) magnet power system. Presently it contains 42 dc rectifier power supplies connected to 24 magnet coils arranged in 17 circuits. During each shot, the system delivers 22.6 MW dc to the magnets for about 3 s. The system is presently being changed to add six power supplies, two solenoidal throttle coils, and two reverse C-coils. When complete, the delivered power will increase to 36.9 MW. The closed-loop control system usually provides current (and thus, magnetic field) that is within 1% of the requested current. Achieving this accuracy required using grounding, shielding, and isolation methods to reduce noise and related problems. These are also discussed.
Date:
November 4, 1983
Creator:
Bell, H.H. Jr.
Object Type:
Article
System:
The UNT Digital Library
Constructibility issues associated with a nuclear waste repository in basalt
This report contains the text and slide reproductions of a speech on nuclear waste disposal in basalt. The presentation addresses the layout of repository access shafts and subsurface facilities resulting from the conceptual design of a nuclear repository in basalt. The constructibility issues that must be resolved prior to construction are described. (DMC)
Date:
December 4, 1981
Creator:
Turner, D.A.
Object Type:
Article
System:
The UNT Digital Library
Geometric perturbation theory and plasma physics
Modern differential geometric techniques are used to unify the physical asymptotics underlying mechanics, wave theory and statistical mechanics. The approach gives new insights into the structure of physical theories and is suited to the needs of modern large-scale computer simulation and symbol manipulation systems. A coordinate-free formulation of non-singular perturbation theory is given, from which a new Hamiltonian perturbation structure is derived and related to the unperturbed structure. The theory of perturbations in the presence of symmetry is developed, and the method of averaging is related to reduction by a circle group action. The pseudo-forces and magnetic Poisson bracket terms due to reduction are given a natural asymptotic interpretation. Similar terms due to changing reference frames are related to the method of variation of parameters, which is also given a Hamiltonian formulation. These methods are used to answer a question about nearly periodic systems. The answer leads to a new secular perturbation theory that contains no ad hoc elements. Eikonal wave theory is given a Hamiltonian formulation that generalizes Whitham's Lagrangian approach. The evolution of wave action density on ray phase space is given a Hamiltonian structure using a Lie-Poisson bracket. The relationship between dissipative and Hamiltonian systems is discussed. …
Date:
April 4, 1985
Creator:
Omohundro, S.M.
Object Type:
Report
System:
The UNT Digital Library
Operator Manual: High Temperature Heat Pump
Experimental data is being obtained from operating a high temperature heat pump system. The use of methanol as a working fluid will necessitate careful monitoring of refrigerant temperatures and pressures with chemical analysis performed on the working fluid during scheduled down time. Materials sent to vendors by Auburn University and quotes received by Auburn concerning equipment (compressor, evaporator, condensor, air heater, dryer, two accumulator tanks, and three expansion valves) are discussed. The simulated dryer and two accumulator tanks were designed by Auburn. The detailed design and pricing estimates are included. Additional information is presented on layout and construction; start-up; testing; shut down; scheduled maintenance and inspection; safety precautions; control system; and trouble shooting.
Date:
March 4, 1980
Creator:
Dyer, D. F.; Maples, G.; Burch, T. E. & Chancellor, P. D.
Object Type:
Report
System:
The UNT Digital Library
Self-actuating reactor-shutdown system. [LMFBR]
A control system for the automatic or self-actuated shutdown or scram of a nuclear reactor is described. The system is capable of initiating scram insertion by a signal from the plant protection system or by independent action directly sensing reactor conditions of low-flow or over-power. Self-actuation due to a loss of reactor coolant flow results from a decrease of pressure differential between the upper and lower ends of an absorber element. When the force due to this differential falls below the weight of the element, the element will fall by gravitational force to scram the reactor. Self-actuation due to high neutron flux is accomplished via a valve controlled by an electromagnet and a thermionic diode. In a reactor over-power, the diode will be heated to a change of state causing the electromagnet to be shorted thereby actuating the valve which provides the changed flow and pressure conditions required for scramming the absorber element.
Date:
June 4, 1981
Creator:
Barrus, D.M.; Brummond, W.A. & Peterson, L.F.
Object Type:
Patent
System:
The UNT Digital Library
Health and environmental effects document on geothermal energy: 1981
Several of the important health and environmental risks associated with a reference geothermal industry that produces 21,000 MW/sub e/ for 30 y (equivalent to 20 x 10/sup 18/ J) are assessed. The analyses of health effects focus on the risks associated with exposure to hydrogen sulfide, particulate sulfate, benzene, mercury, and radon in air and arsenic in water. Results indicate that emissions of hydrogen sulfide are likely to cause odor-related problems in geothermal resources areas, assuming that no pollution controls are employed. For individuals living within an 80 km radius of the geothermal resources, chronic exposure to particulate sulfate could result in between 0 to 95 premature deaths per 10/sup 18/ J of electricity generated. The mean population risk of leukemia from the inhalation of benzene was calculated to be 3 x 10/sup -2/ cases per 10/sup 18/ J. Exposure to elemental mercury in the atmosphere could produce between 0 and 8.2 cases of tremors per 10/sup 18/ J of electricity. Inhalation of radon and its short-lived daughters poses a mean population risk of 4.2 x 10/sup -1/ lung cancers per 10/sup 18/ J. Analysis of skin cancer risk from the ingestion of surface water contaminated with geothermally derived arsenic …
Date:
December 4, 1981
Creator:
Layton, D. W.; Anspaugh, L. R. & O'Banion, K. D.
Object Type:
Report
System:
The UNT Digital Library
Riola release report
Eleven hours after execution of the Riola Event (at 0826 PDT on 25 September 1980) in hole U2eq of the Nevada Test Site (NTS), a release of radioactivity began. When the seepage stopped at about noon the following day, up to some 3200 Ci of activity had been dispersed by light variable winds. On 26 September, examination of the geophone records showed six hours of low-level, but fairly continuous, activity before the release. Electrical measurements indicated that most cables were still intact to a depth below the stemming platform. A survey of the ground zero area showed that the seepage came through cracks between the surface conductor and the pad, through cracks in the pad, and through a crack adjacent to the pad around the mousehole (a small hole adjacent to the emplacement hole). To preclude undue radiation exposure or injury from a surprise subsidence, safety measures were instituted. Tritium seepage was suffucient to postpone site activities until a box and pipeline were emplaced to contain and remove the gas. Radiation release modeling and calculations were generally consistent with observations. Plug-hole interaction calculations showed that the alluvium near the bottom of the plug may have been overstressed and that improvements …
Date:
August 4, 1983
Creator:
Woodward, E.C.
Object Type:
Report
System:
The UNT Digital Library
GAMIDENT: a program to aid in the identification of unknown materials by gamma-ray spectroscopy
A computer code, called GAMIDENT, was written to help identify isotopes by their gamma-ray emissions and thus to assist in the non-destructive assay of unknown materials. The program searches a file (called GAMIN) of gamma-ray spectra, from both radioactive decays and neutron captures, for matches with observed photon energies. This report describes the search procedure used, outlines the use of the code, and gives examples. The code is designed for operation at the Lawrence Livermore Laboratory on a CDC-7600 computer. It is written in standard Fortran (ANSI) as much as possible, but it contains some LRLTRAN instructions required to make use of the Livermore Timesharing System. The code uses about 30,000 words of SCM and about 550,000 words of LCM. Typical problems run in less than 30 seconds. The source program and the data file are available on request.
Date:
January 4, 1980
Creator:
Howerton, R.J. & Eggens, C.J.
Object Type:
Report
System:
The UNT Digital Library
Data testing results for the ENDF/B-V Evaluated Neutron Data File. [20 spheres pulsed with 14-Mev neutrons]
The ENDF/B-V Evaluated Neutron Data File has been tested for validity by comparing calculated and experimental values of k/sub eff/ for 66 critical assemblies and emission neutron spectra for 20 spheres that were pulsed with 14-MeV neutrons. 20 figures, 7 tables.
Date:
July 4, 1980
Creator:
Howerton, Robert J.
Object Type:
Report
System:
The UNT Digital Library
Intelligent optical design program
Described is a general approach to the development of computer programs capable of designing image-forming optical systems without human intervention and of improving their performance with repeated attempts. The approach utilizes two ideas: (1) interpretation of technical design as a mapping in the configuration space of technical characteristics and (2) development of an intelligent routine that recognizes global optima. Examples of lens systems designed and used in the development of the general approach are presented, current status of the project is summarized, and plans for the future efforts are indicated.
Date:
May 4, 1984
Creator:
Bohachevsky, I.O.; Viswanathan, V.K. & Woodfin, G.
Object Type:
Article
System:
The UNT Digital Library
[Memorandum from Tom Preston, May 4, 1987]
Letter from Tom Preston to John Ed Allen, Frank Kemerer, Gerry O'Donovan, Rogers Redding, Walter Sandefur, Bob Stevens, Le Theriot, and Jean Schaake, on May 4, 1987, asking them to serve on a committee for implementing the curriculum of the Texas Academy of Math and Science.
Date:
May 4, 1987
Creator:
Preston, Tom
Object Type:
Letter
System:
The UNT Digital Library
[Memorandum from Richard Rafes to Alfred Hurley, August 4, 1987]
Memorandum from Richard Rafes to Alfred Hurley on August 4, 1987, regarding a meeting with the Texas Education Association, where it was decided that the Texas Academy of Math and Science should serve as an early admissions program to college, rather than an advanced public high school. They agreed to aspects regarding funding, curriculum, admissions, extracurricular activities, residency requirements, discipline and student conduct, and regulation and reporting to TEA.
Date:
August 4, 1987
Creator:
Rafes, Richard
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Rogers Redding to Jean Schaake and Barbara Jungjohan, September 4, 1987]
Letter from Rogers Redding to Jean Schaake and Barbara Jungjohan, on September 4, 1987, confirming the visit of Julian C. Stanley and his meeting with the Student Affairs Committee. A copy of Dr. Stanley's itinerary is included.
Date:
September 4, 1987
Creator:
Redding, Rogers W.
Object Type:
Letter
System:
The UNT Digital Library
[Memorandum from Tom Preston, May 4, 1987]
Memorandum from Tom Preston to John Ed Allen, Frank Kemerer, Gerry O'Donovan, Rogers Redding, Walter Sandefur, Bob Stevens, Le Theriot, and Jean Schaake, on May 4, 1987, asking that they serve on a curriculum committee to implement the Texas Academy of Mathematics and Science.
Date:
May 4, 1987
Creator:
Preston, Tom
Object Type:
Letter
System:
The UNT Digital Library
[Memorandum from James R. Miller to Alfred Hurley, May 4, 1987]
Memorandum from James R. Miller to Alfred Hurley, on May 4, 1987, detailing the tasks he has accomplished in relation to the establishment of a Texas Academy of Mathematics and Science. An executive summary of a proposal, and changes to the proposal, are attached.
Date:
May 4, 1987
Creator:
Miller, James R.
Object Type:
Letter
System:
The UNT Digital Library
Minutes, Texas Academy of Math and Science Student Affairs Committee, September 4, 1987
Minutes from the September 4, 1987 meeting of the Texas Academy of Math and Science Student Affairs Committee, including members present and absent, detailed notes on the meeting, the date and place of the next meeting, and a list of enclosures (not included).
Date:
September 4, 1987
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
[Photograph 2012.201.B0408.0057]
Photograph taken for a story in the Oklahoma Times newspaper. Caption: "Oklahoma State Fair 1978-1979"
Date:
February 4, 1980
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0077.0134]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Suzette Batson"
Date:
October 4, 1981
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0077.0076]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Luxury products such as whirlpool baths are becoming more popular."
Date:
November 4, 1984
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History