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872 Matching Results
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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
[Photograph 2012.201.B0053.0073]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Debris litters the Santa Fe railroad right-of-way on Edmond's north side after 17 cars of freight train derailed Thursday."
Date:
September 10, 1981
Creator:
Buehner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0053.0074]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Nobody was seriously hurt, but the derailment of 17 railroad cars in Edmond today following a collision with a semi-trailer truck left quite a cleanup operations in its wake."
Date:
September 10, 1981
Creator:
Buehner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0141.0469]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Leslie L. Conners Jr."
Date:
December 10, 1981
Creator:
Miller, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0145.0081]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "A leafy glen that used to be called Gallaher's pecan grove near Norman was the site Friday for 'Music Explosion 1981,' a country-western extravaganza which featured blazing temperatures and hot acts like Barbara Mandrell, the Gatlin Brothers and Johnny Rodriguez."
Date:
July 10, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0137.0752]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "BUSINESS L. D. COATE FILES FOR CANDIDACY ..."
Date:
August 10, 1981
Creator:
Klock, Roger
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0145.0080]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Festival featured Johnny Rodriguez, Barbara Mandrell, Johnny Paycheck, Larry Gatlin and the Gatlin Brothers Band, Sammi Smith and other country music acts."
Date:
July 10, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0150.0397]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "An official of an international peace organization noted Monday that President Reagan's decision to produce neutron bombs has brought a sharp reaction from Western European nations."
Date:
August 10, 1981
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0145.0078]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Thousands of country music lovers braved a scorching sun Friday to attend 'Music Explosion 1981' at an isolated pecan grove east of Norman."
Date:
July 10, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0145.0079]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "City two-step to the music of Johnny Paycheck, center, and an unidentified cowboy, right, rest amid scattered beer jugs, paper cups and cowboy boots as more energetic fans surround the stage."
Date:
July 10, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0145.0082]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "A couple of unidentified revelers two-step to the beat of the 'Music Explosion 1981,' held Friday in a pecan grove near Norman."
Date:
July 10, 1981
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0135.0820]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Concentration is the name of the game for young tennis player Monica Clark, who keeps a steady eye on a bouncing ball during warm-up exercises Wednesday at a free tennis clinic at Oklahoma City's Uptown Kiwanis Center."
Date:
June 10, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0138.0102]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
June 10, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
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
[Photograph 2012.201.B0224.0551]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Domingo Gonzalez, 23, Left, holding Daughter, Joe, 2, And Diane, his 17-year-old wife, holding son Jesse, 10 mos."
Date:
May 10, 1981
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0326.0235]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Chuck Kennedy, Norman, Pride of Oklahoma marching band tuba player, takes a break during one of several practice sessions as the band gets ready for its performance at the Sept. 26 clash between OU and the Trojans of the University of Southern California."
Date:
September 10, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0316B.0322]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Scott Johnson"
Date:
November 10, 1981
Creator:
Beuhner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0315B.0373]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "William Johnston, United Okla. Bank Pres. (Take Stock In America banking Committee Chairman)."
Date:
August 10, 1981
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0348.0450]
Photograph used for a story in the Oklahoma Times newspaper. Caption: "Spencer balloonist John Laakman, billing himself as one of Santa's helpers, descends from the sky, left, to offer rides in his hot-air balloon basket to the youngsters playing in the field."
Date:
December 10, 1981
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0329.0127]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Kent Kidwell"
Date:
August 10, 1981
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History