Access
Partner
UNT Libraries Special Collections
223
Oklahoma Historical Society
92
UNT Libraries Government Documents Department
43
Sterling Municipal Library
10
Deaf Smith County Library
9
Carl Albert Congressional Research and Studies Center
7
Hopkins County Genealogical Society
7
Red River County Public Library
7
Leonard Public Library
6
UNT Libraries
6
70 More
Collection
KXAS-NBC 5 News Collection
214
Texas Digital Newspaper Program
176
Oklahoma Digital Newspaper Program
103
Tocker Foundation Grant
86
Office of Scientific & Technical Information Technical Reports
27
The Oklahoma City Times
18
Chickasha Newspaper Collection
12
Ladd & Katherine Hancher Library Foundation
12
Abilene Library Consortium
11
Altus Times-Democrat
11
107 More
Country
Year
Month
Day
Language
545 Matching Results
Results open in a new window/tab.
Results:
1 - 24 of
545
next
System for producing a uniform rubble bed for in-situ processes
A method and a cutter are disclosed for producing a large cavity filled with a uniform bed of rubblized oil shale or other material, for in-situ processing. A raise drill head has a hollow body with a generally circular base and sloping upper surface. A hollow shaft extends from the hollow body. Cutter teeth are mounted on the upper surface of the body and relatively small holes are formed in the body between the cutter teeth. Relatively large peripheral flutes around the body allow material to drop below the drill head. A pilot hole is drilled into the oil shale deposit. The pilot hole is reamed into a large diameter hole by means of a large diameter raise drill head or cutter to produce a cavity filled with rubble. A flushing fluid, such as air, is circulated through the pilot hole during the reaming operation to remove fines through the raise drill, thereby removing sufficient material to create sufficient void space, and allowing the larger particles to fill the cavity and provide a uniform bed of rubblized oil shale.
Date:
April 10, 1981
Creator:
Galloway, Terry R.
Object Type:
Patent
System:
The UNT Digital Library
Americium purification by a combined anion exchange and bidentate organophosphorus solvent extraction process. [Patent application]
Americium is separated from mixtures containing plutonium, other actinides, and other non-lanthamide impurities, by a combined process of anion exchange resin sorption to remove plutonium, and a bidentate organophosphorus solvent extraction of americium of the anion exchange resin effluent. Dihexyl-N,N-diethylcarbamylmethylenephosphonate is a preferred solvent. The initial mixture may be subjected to a cation exchange operation to remove monovalent impurities. The process is especially effective when aluminum, zinc, lead, and copper are present in significant quantities in the original mixture.
Date:
April 10, 1981
Creator:
Navratil, J.D. & Martella, L.L.
Object Type:
Patent
System:
The UNT Digital Library
Benefit-cost analysis of DOE's Current Federal Program to increase hydrothermal resource utilization. Final report
The impact of DOE's Current Federal Program on the commercialization of hydrothermal resources between 1980 and 2000 is analyzed. The hydrothermal resources of the United States and the types of DOE activities used to stimulate the development of these resources for both electric power and direct heat use are described briefly. The No Federal Program and the Current Federal Program are then described in terms of funding levels and the resultant market penetration estimates through 2000. These market penetration estimates are also compared to other geothermal utilization forecasts. The direct benefits of the Current Federal Program are next presented for electric power and direct heat use applications. An analysis of the external impacts associated with the additional hydrothermal resource development resulting from the Current Federal Program is also provided. Included are environmental effects, national security/balance-of-payments improvements, socioeconomic impacts and materials requirements. A summary of the analysis integrating the direct benefits, external impacts and DOE program costs concludes the report.
Date:
December 10, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Thermal Control System and Method for a Passive Solar Storage Wall
A system and method are provided for controlling the storing and release of thermal energy from a thermal storage wall wherein said wall is capable of storing thermal energy from insolation. The system and method includes a device such as a plurality of louvers spaced a predetermined distance from the thermal wall for regulating the release of thermal energy from the thermal wall. This regulating device is made from a material which is substantially transparent to the incoming solar radiation so that when it is in any operative position, the thermal storage wall substantially receives all of the impacting solar radiation. The material in the regulating device is further capable of being substantially opaque to thermal energy so that when the device is substantially closed, thermal release of energy from the storage wall is substantially minimized. An adjustment device is interconnected with the regulating mechanism for selectively opening and closing it in order to regulate the release of thermal energy from the wall.
Date:
July 10, 1981
Creator:
Ortega, Joseph Kenneth Earl
Object Type:
Patent
System:
The UNT Digital Library
Transposable elements and genetic instabilities in crop plants
Transposable elements have long been associated with certain unstable loci in maize and have been intensively studied by McClintock and others. It is known that a transposable element can control the expression of the structural genes at the locus where it resides. These controlling elements in maize are now beginning to be studied at the molecular level. Using recombinant molecular probes we have been able to describe the changes induced by the controlling element Ds at the shrunken locus. Ds elements appear to be large and dissimilar insertions into the wild-type locus - two elements actually map within the transcribed region of the gene. Genetic instabilities have been described in other economically important plants but the bases for these phenomena have not been understood. We believe that it is likely that some of these instabilities are the result of transposable element activity much as in the case of maize.
Date:
April 10, 1981
Creator:
Burr, B. & Burr, F.
Object Type:
Article
System:
The UNT Digital Library
Doppler-shifted resonance absorption by hot electrons
When the large Doppler shifts of hot-electron-ring ECRH absorption are taken into account, the spatial location of the bulk of the energy absorption can be significantly shifted from the cold-plasma resonance region. The high parallel velocity electrons absorb most of the wave energy, thereby shielding the bulk of the electron distribution from the heating source. A simple one-dimensional model of this process has been formulated, based on a right-hand circularly polarized wave which is incident from the high-field side in the parallel direction. In this model, less than 1% of the electrons absorb more than 90% of the wave energy for the case of 30-keV maximum parallel electron energy, 28-GHz microwaves, and a 1-m magnetic field scale length. The effect should be included in power balance models and Fokker-Planck velocity distribution calculations. The Doppler shift also appears for a variety of ray-tracing code calculations in the MFTF-B thermal barrier region.
Date:
November 10, 1981
Creator:
Shearer, J.W.
Object Type:
Article
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 73, No. 50, Ed. 1 Thursday, December 10, 1981
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
December 10, 1981
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
The Tulia Herald (Tulia, Tex.), Vol. 73, No. 37, Ed. 1 Thursday, September 10, 1981
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
September 10, 1981
Creator:
Tooley, Wendell
Object Type:
Newspaper
System:
The Portal to Texas History
Neutral-beam systems for magnetic-fusion reactors
Neutral beams for magnetic fusion reactors are at an early stage of development, and require considerable effort to make them into the large, reliable, and efficient systems needed for future power plants. To optimize their performance to establish specific goals for component development, systematic analysis of the beamlines is essential. Three ion source characteristics are discussed: arc-cathode life, gas efficiency, and beam divergence, and their significance in a high-energy neutral-beam system is evaluated.
Date:
August 10, 1981
Creator:
Fink, J. H.
Object Type:
Article
System:
The UNT Digital Library
Neutrino number of the universe
The influence of grand unified theories on the lepton number of the universe is reviewed. A scenario is presented for the generation of a large (>> 1) lepton number and a small (<< 1) baryon number. 15 references.
Date:
August 10, 1981
Creator:
Kolb, E.W.
Object Type:
Article
System:
The UNT Digital Library
Development of forging and heat treating practices for AMS 5737 for use at liquid helium temperatures
To achieve a combination of high yield-strength (sigma y), plane-strain fracture-toughness (K/sub IC/) and resistance to galling when turned against austenitic stainless steels in highly-loaded threaded turnbuckles in the M.F.T.F.-B (Mirror Fusion Test Facility), AMS 5737 (Fe-15Cr-25Ni-1Mo-V-Ti-Al-B), a heat-treatable Fe-base superalloy that is slightly-ferromagnetic under high magnetic fields at 4K, was chosen for large (approx. 340 kg) forged turn buckles. This report describes the forging and heat-treatment optimization program that resulted in good sigma y and K/sub IC/ over the 4 to 300K range of service-temperatures and the verification tests run on a pre-production forging and actual production parts.
Date:
August 10, 1981
Creator:
Dalder, E.N.C. (Lawrence Livermore National Lab., CA) & Greenlee, M.
Object Type:
Article
System:
The UNT Digital Library
Investigation of Sulfur-Tolerant Catalysts for Selective Synthesis of Hydrocarbon Liquids From Coal-Derived Gases. Quarterly Technical Progress Report, September 19-December 18, 1980
A 15% iron boride on SiO/sub 2/ catalyst was prepared using an alcohol solution reduction with NaBH/sub 4/. H/sub 2/ chemisorption measurements were performed for Fe-S-100 (3% Fe/SlO/sub 2/) and are in progress for the iron-boride-silica catalyst. Reduction of Co catalysts at 623 K rather than 723 K is being tested as a method to improve dispersion by decreasing the amount of Co-support interaction. An in depth study of non olefinic and nonparaffinic compound retention times on the 10% SP2100 chromotograph column has shown that the compounds elute in the following order for a specific carbon number: alkene < alkane < aldehyde < ketone < ester < alcohol < acid. Mass flow controllers have been installed in the reactor system and are fully operational.
Date:
January 10, 1981
Creator:
Bartholomew, C. H.
Object Type:
Report
System:
The UNT Digital Library
Mineral waste form development for US defense wastes. Progress report
Individual sections were abstracted and indexed.
Date:
February 10, 1981
Creator:
Ringwood, A.E.
Object Type:
Report
System:
The UNT Digital Library
Minimizing resputtering of Pt-coated microspheres in a batch magnetron sputtering process
Preventing DT loss from glass microspheres being smoothly coated with PT is needed during fabrication of laser fusion targets. Evidence indicates that the increase of substrate temperature due to resputtering will cause DT loss. Resputtering will prevent a smooth and uniform coating on these glass microspheres (140 ..mu..m in diameter). This paper reviews the method that was developed to find a set of coating conditions to minimize the DT loss, and still be able to produce thick smooth Pt coated glass microspheres.
Date:
July 10, 1981
Creator:
Plake, A.L.
Object Type:
Report
System:
The UNT Digital Library
Structural design considerations in the Mirror Fusion Test Facility (MFTF-B) vacuum vessel
In view of favorable results from the Tandem Mirror Experiment (TMX) also at LLNL, the MFTF project is now being rescoped into a large tandem mirror configuration (MFTF-B), which is the mainline approach to a mirror fusion reactor. This paper concerns itself with the structural aspects of the design of the vessel. The vessel and its intended functions are described. The major structural design issues, especially those influenced by the analysis, are described. The objectives of the finite element analysis and their realization are discussed at length.
Date:
February 10, 1981
Creator:
Vepa, Kosla & Sterbentz, William H.
Object Type:
Article
System:
The UNT Digital Library
Predictive calculations of volatilities of metals and oxides in steam-containing environments
Predictive methods are developed for estimating the bond energies and free energy functions of volatile species having the general formula MO/sub x/ (OH)/sub y/, in order to shed some light on the mechanisms and extent of steam accelerated volatilization processes. A specific example of applying the data is illustrated for the case of a proposed underground radioactive waste disposal process, where oxides of radionuclides are allowed to equilibrate with 100 atm steam and 10/sup -2/ atm oxygen at 1000 to 2000K. Vapor species found to have high volatilities include Cs/sub 2/(OH)/sub 2/, CsOH, AmO/sub 2/(OH)/sub 2/, AmO(OH)/sub 3/, UO/sub 2/(OH)/sub 2/, NbO(OH)/sub 3/, PuO/sub 2/(OH)/sub 2/, CeO(OH)/sub 2/, Ba(OH)/sub 2/, and Eu(OH)/sub 3/. Thermodynamic data are tabulated for all possible monomeric species for this specific example.
Date:
August 10, 1981
Creator:
Krikorian, Oscar H.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Housing tour]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
July 10, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Dumpster]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 10, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Redbird]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 10, 1981, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Teacher Flight]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story that aired at 10 PM.
Date:
November 10, 1981
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Lunch food]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 10, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: SMU clout]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 10, 1981, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Dance]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 10, 1981, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Dallas City Council]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
June 10, 1981, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library