Degree Department

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Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980 (open access)

Electrochemical photovoltaic cells/stabilization and optimization of II-VI semiconductors. First technical progress report, 15 April 1980-30 June 1980

The overall goal of this program is to provide the basis for designing a practical electrochemical solar cell based on the II-VI compound semiconductors. Emphasis is on developing new electrolyte redox systems and electrode surface modifications which will stabilize the II-VI compounds against photodissolution without seriously degrading the long-term solar response. The bulk electrode material properties are also being optimized to provide the maximum solar conversion efficiency and greatest inherent electrode stability. Factors limiting the short circuit current of the n-CdSe/methanol/ferro-ferricyanide system to 17.5 mA/cm/sup 2/ have been identified. The principal limiting factor is apparently specific adsorption of hexacyanoferrate species on the electrode surface which occurs at higher redox couple concentrations and slows the overall charge transfer process. Ion pairing also occurs, resulting in a low mass transport rate (smaller diffusion coefficients and increased solution viscosity), and probably enhances the degree of specific adsorption. Improvements in the performance of this system will require mitigation of the interactions between the redox species and the electrode surface, e.g., via electrolytes with reduced ion-pairing tendencies or the use of electrode surface films. Photoelectrochemically generated polypyrrole films have been shown to protect CdX photoanodes from dissolution while permitting electron exchange with the electrolyte. Current …
Date: July 20, 1980
Creator: Noufi, R.; Tench, D. & Warren, L.
Object Type: Report
System: The UNT Digital Library
Temporal perspective on acid deposition research (open access)

Temporal perspective on acid deposition research

This statement presented to the Subcommittee on Natural Resources of the US House of Representatives gives a definition of acid rain, presents new data on the regional and temporal nature of the problem, and discusses research needs. (ACR)
Date: February 20, 1980
Creator: Hendrey, George R.
Object Type: Report
System: The UNT Digital Library
Collector sealants and breathing. Final Report, 25 September 1978-31 December 1979 (open access)

Collector sealants and breathing. Final Report, 25 September 1978-31 December 1979

The objectives of this program were: (1) to investigate the pertinent properties of a variety of possible sealants for solar collectors and identify the most promising candidates, and (2) to study the effect of breathing in flat-plate, thermal solar collector units. The study involved two types of sealants, Class PS which includes preformed seals or gaskets and Class SC which includes sealing compounds or caulks. It was the intent of the study to obtain data regarding initial properties of candidate elastomers from manufacturers and from the technical literature and to use those sources to provide data pertaining to endurance of these materials under environmental service conditions. Where necessary, these data were augmented by experimental measurements. Environmental stresses evaluated by these measurements included elevated temperatures, moisture, ultraviolet light, ozone and oxygen, and fungus. The second major area of the work involved a study of the effects of materials used and design on the durability of solar collectors. Factors such as design, fabrication, materials of construction, seals and sealing techniques and absorber plate coatings were observed on actual field units removed from service. Such phenomena as leakage, corrosion and formation of deposits on glazing and absorber plate were noted. An evaluation of …
Date: February 20, 1980
Creator: Mendelsohn, M A; Luck, R M; Yeoman, F A & Navish, Jr, F W
Object Type: Report
System: The UNT Digital Library
State water rights law and geothermal hydrothermal commercialization in five Pacific Rim states (open access)

State water rights law and geothermal hydrothermal commercialization in five Pacific Rim states

The water rights of the five Pacific states - California, Oregon, Washington, Alaska, and Hawaii - and their possible impacts on geothermal development are discussed. (MHR)
Date: March 20, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Fusion product deposition and energy balance (open access)

Fusion product deposition and energy balance

Extensive Monte-Carlo calculations were performed of alpha-particle deposition in the Hill's Vortex configuration, as reported in D.E. Driemeyer's Ph.D. Thesis (University of Illinois, 1980). This has generally been done including a cold plasma density, n/sub c/, on the open field lines, with n/sub C//T/sub C//sup 3/2/ approx. = n/sub H//T/sub H//sup 3/2/ - i.e. with the slowing down ratio tau/sub H//tau/sub C/ lying between .1 and 10. Since many of the alpha particles spend a significant amount of their time on the open field lines, values of tau/sub H//tau/sub C/ greater than unity lead to significant removal of alpha-particle ash from the closed-field region. Surprisingly, one is able to perform this ash removal and still retain enough energy to raise the reactor Q significantly (or even ignite it).
Date: May 20, 1980
Creator: Condit, W.C. & Driemeyer, D.E.
Object Type: Report
System: The UNT Digital Library
Catalogue of monitoring activities at Rocky Flats: 1978, 1979 (open access)

Catalogue of monitoring activities at Rocky Flats: 1978, 1979

A listing of environmental surveillance sampling endeavors for the years 1978 and 1979 is given in which sampling media, i.e., ambient air, stack effluent air, water, and soil are considered. Sampling locations, frequency of sampling, parameters analyzed, and control limits also are given. The objectives of the sampling are considered in defining the program.
Date: June 20, 1980
Creator: Werkema, M. V.
Object Type: Report
System: The UNT Digital Library
Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 3. Report No. 1023 (open access)

Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 3. Report No. 1023

The current legislative activity covers the following: federal funds, state financial incentives, air quality bills, transmission line access, state energy agency reorganization, and state energy taxes. Current regulatory activities of the California Energy Commission, and the Lake County Air Pollution Control District are reviewed. (MHR)
Date: July 20, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: a monitoring report. Report No. 1017 (open access)

Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: a monitoring report. Report No. 1017

Four key geothermal-impacting bills presently before the California legislature are described. Two deal with state financial backing for geothermal projects. The third relates to the use of the state's share of the BLM geothermal revenues and the fourth to the protection of sensitive hot springs. The current regulatory activities of the California Energy Commission, the California Division of Oil and Gas, and the counties are discussed. (MHR)
Date: January 20, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 2. Report No. 1020 (open access)

Current California legislative and regulatory activity impacting geothermal hydrothermal commercialization: monitoring report No. 2. Report No. 1020

The progress of four bills relating to geothermal energy is reported. The current regulatory activities of the California Energy Commission, the Lake County Planning Commission/Lake County Air Pollution Control District, the Governor's Office of Planning and Research, the State Lands' Commission, and the California Public Utilities Commission are reviewed. (MHR)
Date: April 20, 1980
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Anomalous isotopic composition of cosmic rays (open access)

Anomalous isotopic composition of cosmic rays

Recent measurements of nonsolar isotopic patterns for the elements neon and (perhaps) magnesium in cosmic rays are interpreted within current models of stellar nucleosynthesis. One possible explanation is that the stars currently responsible for cosmic-ray synthesis in the Galaxy are typically super-metal-rich by a factor of two to three. Other possibilities include the selective acceleration of certain zones or masses of supernovas or the enhancement of /sup 22/Ne in the interstellar medium by mass loss from red giant stars and planetary nebulas. Measurements of critical isotopic ratios are suggested to aid in distinguishing among the various possibilities. Some of these explanations place significant constraints on the fraction of cosmic ray nuclei that must be fresh supernova debris and the masses of the supernovas involved. 1 figure, 3 tables.
Date: June 20, 1980
Creator: Woosley, S. E. & Weaver, T. A.
Object Type: Article
System: The UNT Digital Library

[Photograph 2012.201.B0077.0088]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Cindy Batke, of OU leads off from first base during a tournament softball game with Wichita State."
Date: March 20, 1980
Creator: Southerland, Paul
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0143.0453]

Photograph used for a story in the Daily Oklahoman newspaper.
Date: April 20, 1980
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0136.0728]

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "A spring theme was presented at the recent Guest Day luncheon and style show sponsored by CPA (Certified Public Accountants) Wives Club in Quail Creek Golf and Country Club."
Date: March 20, 1980
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0137.0034]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Norman's first brick structure was razed in 1928 to make room for the Sooner Theater, 101 E. Main, Norman."
Date: December 20, 1980
Creator: Lynn, Renee
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0137.0030]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Located at 508 N Peters, Norman, this frame structure is typical of fashionable homes built in Oklahoma Territory at the turn of the century."
Date: December 20, 1980
Creator: Lynn, Renee
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0156.0173]

Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date: August 20, 1980
Creator: McDaniel, David
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0149.0277]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "George L. Cross. / Former OU Pres."
Date: January 20, 1980
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0149.0281]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "George L. Cross ( Former OU Pres.)"
Date: January 20, 1980
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0137.0033]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The first trolley cars with interurban service from Oklahoma City to Norman rattled through this station, 105 W Main, June 24, 1917."
Date: December 20, 1980
Creator: Lynn, Renee
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0149.0278]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Cleo Cross / Mrs. George L. Cross."
Date: January 20, 1980
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0155.0555]

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Radio station KTOK talk show host John Dayle hands down another box of genuine sourdough French bread to approximately 400 hungry dough lovers who greeted him at the American Airlines freight building at Will Rogers World Airport this week."
Date: August 20, 1980
Creator: Southerland, Paul B.
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0155.0134]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "1980 Dem. Convention delegate ."
Date: May 20, 1980
Creator: unknown
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0136.0729]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "A spring theme was presented at the recent Guest Day luncheon and style show sponsored by CPA (Certified Public Accountants) Wives Club in Quail Creek Golf and Country Club."
Date: March 20, 1980
Creator: Miller, Joe
Object Type: Photograph
System: The Gateway to Oklahoma History

[Photograph 2012.201.B0137.0031]

Photograph used for a story in the Oklahoma Times newspaper. Caption: "At one time there were 14 or 15 saloons in and near Lexington."
Date: December 20, 1980
Creator: Lynn, Renee
Object Type: Photograph
System: The Gateway to Oklahoma History