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Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Grand Island NTMS Quadrangle, Nebraska; Kansas: Appendix C
Data collected as part of a hydrogeochemical and stream sediment reconnaissance of Grand Island NTMS quadrangle in Kansas and Nebraska including laboratory data on well water and stream sediments as well as field data.
Date:
July 31, 1980
Creator:
National Uranium Resource Evaluation Program
Object Type:
Dataset
System:
The UNT Digital Library
Uranium in Granites From the Southwestern United States: Actinide Parent-Daughter Systems, Sites and Mobilization: First Year Report, [Color Figures]
Color copies of photomicrograph figures that accompany a report studying uranium in granites in the southwestern United States.
Date:
October 1980
Creator:
Silver, L. T.; Williams, I. S. & Woodhead, J. A.
Object Type:
Image
System:
The UNT Digital Library
Palladium Catalyzed Coupling Reactions: Mechanism of Reductive Elimination. Progress Report, October 1, 1979-September 30, 1980. [Ethane Elimination]
The 1,1-reductive elimination of ethane from three cis-bis(phosphine)-dimethylpalladium complexes, L/sub 2/Pd(CH/sub 3/)/sub 2/ (L = PPh/sub 3/, PPh/sub 2/,CH/sub 3/ and L/sub 2/ = Ph/sub 2/PCH/sub 2/CH/sub 2/PPh/sub 2/), and three trans analogs (L = PPh/sub 3/, PPh/sub 2/CH/sub 3/ and L/sub 2/ = 2,11-bis(diphenylphosphinomethyl)benzo(c)phenanthrene (TRANSPHOS)) was carried out. The three cis complexes underwent reductive elimination in the presence of coordinating solvents (DMSO, DMF, and THF). The trans complexes which could isomerize to cis (L = PPh/sub 3/, PPh/sub 2/CH/sub 3/) did so in polar solvents and then underwent reductive elimination. TRANSPHOS dimethylpalladium would not undergo reductive elimination of ethane. The eliminations from the cis isomers were intramolecular and displayed first order kinetics. Although TRANSPHOS dimethylpalladium(II) would not undergo a 1,1-reductive elimination of ethane, the addition of CD/sub 3/I to a DMSO solution of this complex at 25/sup 0/C rapidly produced CD/sub 3/-CH/sub 3/, implicating a transient palladium(IV) intermediate. E- and Z-bromostyrylbis(diphenylmethylphosphine)palladium(0) react with methyl lithium in THF at ambient temperature to give the E- and Z- propenylbenzenes, respectively. At -78/sup 0/C, the intermediate E- and Z-styrylmethylbis(diphenylmethylphosphine)palladium(II) complexes (9a,b) can be isolated. On raising the temperature of solutions of 9a,b in THF, E- and Z-propenylbenzenes are produced. The reductive elimination …
Date:
September 1, 1980
Creator:
Stille, J. K.
Object Type:
Report
System:
The UNT Digital Library
Novel Concepts in Electrochemical Solar Cells. Third Quarterly Progress Report, November 15, 1979-January 15, 1980. [Molten Salt Electrolytes]
Efforts have been primarily directed toward evaluation of the room temperature molten salt electrolyte in terms of its overall performance for photovoltaic cells. Mass transport processes may prove to be the rate-limiting factor for such electrolytes, unless the concentration of the photo-active redox component can be increased and the solvent viscosity reduced. Acid-base surface chemistry of n-GaAs as occurs in aqueous systems, has been found present and its consequences will be further explored. The selection and optimization of PEC electrolytes is a complex task and we believe that a systems approach would facilitate in identifying the basic electrolyte properties needed. A preliminary analysis reveals that although some of the criteria for an electrolyte are definable precisely, others do require empirical experimentation. It can be concluded that relatively few electrolytes in current use are adequate and it would appear that greater efforts to develop electrolytes would be advantageous. The various types of electrolytes that could be used for PEC's have been identified. Good quality MoSe/sub 2/ single crystals can be grown and short circuit currents greater than previously reported have been achieved in an I/sub 2//I/sup -//Pt cell. A novel technique to produce photo-active films by anodization is being investigated, initially …
Date:
January 1, 1980
Creator:
DuBow, J.; Job, R. & Krishnan, R.
Object Type:
Report
System:
The UNT Digital Library
Vacuum deposited polycrystalline silicon films for solar cell applications. Quarterly report, September 15-December 31, 1979
Polycrystalline silicon films 14-22 ..mu..m thick and with average grain diameters of 20-40 ..mu..m were deposited by vacuum deposition onto both ceramic and sapphire substrates which were previously coated with a thin (1-2 ..mu..m) TiB/sub 2/ conducting layer. The large grains are the result of an interaction in the initial growth stages between silicon and TiB/sub 2/. SIMS studies of B/Ti/Al/sub 2/O/sub 3/, B/Al/sub 2/O/sub 3/, and Ti/Al/sub 2/O/sub 3/, interactions are reported as part of a continuing investigation of TiB/sub 2/ formation and silicon interactions on the TiB/sub 2/ surface. The increase in grain size has led to an improvement in the open-circuit voltage V/sub oc/, but not to an increase in the short-circuit current J/sub sc/. Capacitance-voltage measurements give results characteristic of an abrupt junction and a build-in voltage V/sub D/ consistent with the measured doping levels. A simple method for measuring the minority carrier diffusion length in the base region L/sub n/ is described. The measurements indicate that there is little change in L/sub n/ between large (20-40 ..mu..m) and small (approx. 5 ..mu..m) grained samples.
Date:
March 1, 1980
Creator:
Feldman, C.; Arrington, C. H.; Blum, N. A. & Satkiewicz, F. G.
Object Type:
Report
System:
The UNT Digital Library
Site selection and preliminary evaluation of potential solar-industrial-process-heat applications for federal buildings in Texas
The potential for solr process heat applications for federal buildings in Texas is assessed. The three sites considered are Reese Air Force Base, Lubbock; Fort Bliss, El Paso; and Dyess Air Force Base, Abilene. The application at Lubbock is an electroplating and descaling facility for aircraft maintenance. The one at El Paso is a laundry facility. The Abilene system would use solar heat to preheat boiler feedwater makeup for the base hospital boiler plant. The Lubbock site is found to be the most appropriate one for a demonstration plant, with the Abilene site as an alternate. The processes at each site are described. A preliminary evaluation of the potential contribution by solar energy to the electroplating facility at Reese AFB is included. (LEW)
Date:
September 30, 1980
Creator:
Branz, Michael A.
Object Type:
Report
System:
The UNT Digital Library
Low-cost flywheel demonstration program. Final report
The Applied Physics Laboratory/Department of Energy Low Cost Flywheel Demonstration Program was initiated on 1 October 1977 and was successfully concluded on 31 December 19'9. The total cost of this program was $355,190. All primary objectives were successfully achieved as follows: demonstration of a full-size, 1)kWh flywheel having an estimated cost in large-volume production of approximately $50/kWh; developmeNt of a ball-bearing system having losses comparable to the losses in a totally magnetic suspension system; successful and repeated demonstration of the low-cost flywheel in a complete flywheel energy-storage system based on the use of ordinary house voltage and frequency; and application of the experience gained in the hardware program to project the system design into a complete, full-scale, 30-kWh home-type flywheel energy-storage system.
Date:
April 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Vacuum deposited polycrystalline silicon films for solar cell applications. Second quarterly technical progress report. January 1-March 31, 1980
A careful study of a specially formed thin silicon layer on TiB/sub 2/-coated sapphire reveals that the interaction layer of TiSi/sub 2/ is composed of larger grains. Processing steps were developed which lead closer to the goal of fabricating polycrystalline silicon photovoltaic devices completely by vacuum deposition. Both n-type and p-type silicon are now being deposited. New deposition masks were made for depositing the n-regions upon the p-layers. New electrode deposition masks were also made for a direct electroding process to replace the photolithographic process used previously. The TiB/sub 2/ bottom electrode fabrication has been achieved in a single vacuum chamber. Reaction constants and activation energy for TiB/sub 2/ layer formation were determined to be less than those reported by other authors for bulk material. Studies of crystallite growth and interfacial interactions have continued. Major sources of undesirable impurities have been identified and removed from the vacuum chambers. The changes made this quarter have not been incorporated into a completed photovoltaic device.
Date:
May 1, 1980
Creator:
Feldman, C.; Arlington, III, C. H.; Blum, N. A. & Satkiewicz, F. G.
Object Type:
Report
System:
The UNT Digital Library
Energy conservation in citrus processing. Technical progress report, October 1, 1979-March 31, 1980
The Sunkist Citrus Plant in Ontario, California, processes about 6 million pounds of citrus fruit per day to make products which include frozen concentrated juice; chilled, pasteurized, natural strength juice; molasses from peel; dried meal from peel; pectin; citrus oil; and bioflavonoids. The energy intensive operations at the plant include concentration, drying, and refrigeration. The objective of the two-year two-phase project is to identify an economically viable alternative to the existing method of meeting energy requirements. Progress on the technical work of Phase I is reported. The following are summarized: requirements (energy price projection, atmospheric emission requirements, citrus juice quality constraints, economic evaluations); characterization (basic citrus processing operations, energy consumption and fruit processed vs time, identification and measurement of energy uses, energy balance for a typical citrus juice evaporator); and thermodynamic analysis (heat pump model, thermal evaporator, and co-generation model).
Date:
June 15, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Vacuum deposited polycrystalline silicon films for solar cell applications. Quarterly report, 1 April-30 June 1980
Polycrystalline p-type films were vacuum deposited onto TiB/sub 2/ coated alumina and sapphire substrates. Epitaxial layers were also formed on single crystal silicon substrates. Junctions in the layers were created by both gaseous diffusion in a tube furnace and by vacuum deposition. The TiB/sub 2/ vacuum deposited bottom electrodes have resistivities between 30 and 40 ..mu.. ..cap omega..-cm. All-vacuum-deposited solar cells were fabricated for the first time. Efficiencies approaching those in the diffused junction devices were achieved. The n-layers were deposited on the previously deposited p-layer/TiB/sub 2//ceramic sandwiches by vacuum deposition of silicon in a phosphine (PH/sub 3/) atmosphere. Photovoltaic data in diffused junction samples, including efficiency and spectral response measurements, indicate that crystallite size may no longer be the limiting factor in achieving high efficiency; rather, performance is now being limited by the presence of impurities in the vacuum deposition silicon base region.
Date:
August 1, 1980
Creator:
Feldman, C.; Arrington, III, C. H.; Blum, N. A. & Satkiewicz, F. G.
Object Type:
Report
System:
The UNT Digital Library
[Crossroads Market Bag]
Bag from Crossroads Market, a store run by Bill Nelson, Terry Tebedo, and William Waybourn throughout the 1980s. The bag has a logo with the initials "CM" in the center of a circle and text underneath that says "Crossroads Market Bookstore & Cafe."
Date:
[1980..]
Creator:
unknown
Object Type:
Physical Object
System:
The UNT Digital Library
[Portrait of an Awards Ceremony at RCD]
Photograph of Michael Millikin, editors of AIDS Update, Craig Hess (2nd from the right) and Lewis David (2nd from the left) at an awards ceremony at the AIDS Resource Center.
Date:
[1980,1989]
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[On Tarman's Investigation]
Paper that examines Tarman's investigation into gifted children in California.
Date:
1980~
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
[History of Early Admission Programs]
Paper about the history of early admission programs in the United States of America. It proposes that advanced students not be kept to an age-in-grade pace, and that early admission programs be implemented to give these students a chance to learn at their own pace.
Date:
1980~
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0051.0979]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "A small flood was created on North Eastern near Grand Boulevard this morning when an auto smashed into a fire hydrant."
Date:
January 8, 1980
Creator:
Buehner, Jeff
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[2012.201.B0051.0266]
Men inspecting aircraft wreckage near a barn. Photograph taken for a newspaper owned by the Oklahoma Publishing Company.
Date:
January 10, 1980
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0051.0993]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Melting Pot- Melting snow from Monday's record early storm which turned a dirt road into the spin out of this four wheel drive vehicle and caused it to flip into Lake Hefner Monday evening about 7;20 PM near Stars and Stripes Park."Photo by Renee Lynn. Original Photo 11\17\80. Published on 11-14-80."
Date:
November 18, 1980
Creator:
Lynn, Renee
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[North side of Administration Building at North Texas State University #1]
Photograph of the exterior of the Hurley Administration Building at North Texas State University. The photograph, apparently taken from the roof of another building, depicts the Administration Building's north side and main entrance. In the left foreground is the Information Sciences Building; the Biology Building is visible in the right foreground. In the left background behind the Administration Building is the Kerr Hall dormitory complex; the A. M. Willis Library is visible in the right background. People are visible on the concrete walking path leading to the Administration Building.
Date:
March 11, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[North side of Administration Building at North Texas State University #2]
Photograph of the exterior of the Hurley Administration Building at North Texas State University. This photograph, apparently taken from the roof of another building, depicts the Administration Building's north side and main entrance. In the left foreground is the Information Sciences Building; the Biology Building and Chemistry Building are visible in the right foreground. In the left background behind the Administration Building is the Kerr Hall dormitory complex; the A. M. Willis Library is visible in the right background. People are visible on the concrete walking paths leading through the campus.
Date:
March 11, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[North side of Administration Building at North Texas State University #3]
Photograph of the exterior of the Hurley Administration Building at North Texas State University. This photograph, apparently taken from the roof of another building, depicts the Administration Building's north side and main entrance. In the left foreground is the Information Sciences Building; the Biology Building and Chemistry Building are visible in the right foreground. In the left background behind the Administration Building is the Kerr Hall dormitory complex; the A. M. Willis Library is visible in the right background. People are visible on the concrete walking paths leading through the campus.
Date:
March 11, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Photograph 2012.201.B0051.0995]
Photograph taken for a newspaper owned by the Oklahoma Publishing Company. Caption: "Drive-In Parking- the parking lot wasn't full, but this auto driven by an Oklahoma City man found another, more unorthodox place to park Saturday after going out of control near NW 30 and Pennsylvania."
Date:
June 1, 1980
Creator:
Longstreath, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Side-profile of filmmaker Lewis Abernathy]
Photograph of filmmaker and producer Lewis Abernathy, an alumnus of North Texas State University. In the image Abernathy is looking through the lens of a Minolta XL-sound 84 video camera off frame wearing glasses and a button up shirt.
Date:
April 13, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Filmmaker Lewis Abernathy looking through camera, 2]
Photograph of filmmaker and producer Lewis Abernathy, an alumnus of North Texas State University. In the image Abernathy, sitting profile to the camera, is looking through the lens of a Minolta XL-sound 84 video camera. He is wearing glasses and a button up shirt.
Date:
April 13, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Portrait of Lewis Abernathy behind a clapperboard]
Photograph of filmmaker and producer Lewis Abernathy, an alumnus of North Texas State University. In the image Abernathy is making a face behind a clapperboard, being held by someone off frame, with his name written on it. Abernathy is wearing glasses and a button up shirt in front of a plain background.
Date:
April 13, 1980
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library