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Integrated dry NO sub x /SO sub 2 emissions control system
The DOE Cooperative Agreement No. DE-FC22-91PC90550 dated March 11, 1991, Public Service Company of Colorado has prepared the following quarterly report for Phases I, IIA, and IIB of the Integrated Dry NO{sub x}SO{sub 2} Emissions Control System Project. This project includes low NO{sub x} burners with NO{sub x} ports (post firing air injection), humidification and dry sorbent injection.
Date:
February 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
[Letter from Jack Davis to Mitch Jericho, December 15, 1992]
Photocopy of a letter from Jack Davis, co-director of North Texas Institute for Educators on the Visual Arts, to Mitch Jericho. Thanking Jericho for visiting the University of North Texas campus to talk about a collaboration between them and Young Audiences. As requested by Jericho, Davis has enclosed a copy of the paper on accountability which will appear in the Winter 1993 issues of Studies in Art Education. Copied on the letter is Bill McCarter.
Date:
December 15, 1992
Creator:
Davis, Donald Jack
Object Type:
Letter
System:
The UNT Digital Library
Weld Penetration and Defect Control
Highly engineered designs increasingly require the use of improved materials and sophisticated manufacturing techniques. To obtain optimal performance from these engineered products, improved weld properties and joint reliability are a necessarily. This requirement for improved weld performance and reliability has led to the development of high-performance welding systems in which pre-programmed parameters are specified before any welding takes place. These automated systems however lack the ability to compensate for perturbations which arise during the welding process. Hence the need for systems which monitor and control the in-process status of the welding process. This report discusses work carried out on weld penetration indicators and the feasibility of using these indicators for on-line penetration control.
Date:
May 15, 1992
Creator:
Chin, Bryan A.
Object Type:
Report
System:
The UNT Digital Library
Integrated dry NO sub x /SO sub 2 emissions control system
The DOE Cooperative Agreement No. DE-FC22-91PC90550 dated march 11, 1991, Public Service Company of Colorado has prepared the following quarterly report for Phases I, IIA, and IIB of the Integrated Dry No{sub x}/SO{sub 2} Emissions Control System Project. This project includes low NO{sub x} burners with NO{sub x} ports (post firing air injection), humidification and dry sorbent injection.
Date:
February 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Anaerobic bioprocessing of low-rank coals
The overall goal of this project is to find biological methods to remove carboxylic functionalities from low-rank coals and to assess the properties of the modified coal towards coal liquefaction. The main objectives for this quarter were: (1) continuation of microbial consortia development and maintenance, (2) crude enzyme study using best decarboxylating organisms, (3) decarboxylation of lignite, demineralized Wyodak coal and model polymers, and (4) characterization of biotreated coals.
Date:
April 15, 1992
Creator:
Jain, M. K.; Narayan, R. & Han, O.
Object Type:
Report
System:
The UNT Digital Library
Possible explosive compounds in the Savannah River Site waste tank farm facilities
Based on a comparison of the known constituents in high-level nuclear waste stored at the Savannah River Site (SRS) and explosive compounds reported in the literature, only two classes of explosive compounds (metal NO{sub x} compounds and organic compounds) were identified as requiring further work to determine if they exist in the waste, and if so, in what quantities. Of the fourteen classes of explosive compounds identified as conceivably being present in tank farm operations, nine classes (metal fulminates, metal azides, halogen compounds, metal-amine complexes, nitrate/oxalate mixtures, metal oxalates, metal oxohalogenates, metal cyanides/cyanates, and peroxides) are not a hazard because these classes of compounds cannot be formed or accumulated in sufficient quantity, or they are not reactive at the conditions which exist in the tank farm facilities. Three of the classes (flammable gases, metal nitrides, and ammonia compounds and derivatives) are known to have the potential to build up to concentrations at which an observable reaction might occur. Controls have been in place for some time to limit the formation or control the concentration of these classes of compounds. A comprehensive list of conceivable explosive compounds is provided in Appendix 3.
Date:
March 15, 1992
Creator:
Hobbs, D. T.
Object Type:
Report
System:
The UNT Digital Library
Improved methods to manufacture aluminum
A low-temperature (750{degrees}C) process to produce aluminum, employing dimensionally-stable electrodes, was investigated under this contract. Tests were carried out at a 10-ampere scale to develop a nonconsumable anode and to evaluate certain cell operating parameters. The work was carried out in conjunction with a NSF SBIR research grant to study the fundamental science aspects of the process. A scaled up 300-ampere cell was built and a preliminary test run was made with encouraging results. The new technology has the promise of producing aluminum at 5.0 kWh/lb as compared to the US average of about 7.5 kWh/lb, and to produce it at lower cost. Preliminary technical discussions have been held with a major US aluminum company under secrecy agreement for eventual licensing.
Date:
June 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Electronic states in systems of reduced dimensionality
This report briefly discusses the following research: magnetically modulated systems, inelastic magnetotunneling, ballistic transport review, screening in reduced dimensions, raman and electron energy loss spectroscopy; and ballistic quantum interference effects. (LSP).
Date:
April 15, 1992
Creator:
Ulloa, S.E.
Object Type:
Report
System:
The UNT Digital Library
NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts
During this period, we focused our attention in analyzing the magnetic nature of the extensively used trimetallic catalyst system Cu-Co-Cr for the production of higher alcohols. We believe that there could be some correspondence between the catalytic and magnetic behaviors of the transition metal catalyst systems. Both the morphology and metallic charge distribution of the particles are know to govern the catalytic as well as the magnetic properties of the system. Based on this concept, we have extensively examined the Cu/Co system varying Cu/Co ratio from 0.2--4.0. Spectroscopic results are outlined herein. (VC)
Date:
April 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Innovative Clean Coal Technologies (ICCT): Demonstration of innovative applications of technology for cost reductions to the CT-121 FGD process
The objective of this project is to demonstrate on a commercial scale several innovative applications of cost-reducing technology to the Chiyoda Thoroughbred-121 (CT-121) process. CT-121 is a second generation flue gas desulfurization (FGD) process which is considered by the Electric Power Research Institute (EPRI) and Southern Company Services (SCS) to be one of the most reliable and lowest cost FGD options for high-sulfur coal-fired utility boiler applications. Demonstrations of the innovative design approaches will further reduce the cost and provide a clear advantage to CT121 relative to competing technology.
Date:
May 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Characterization of a 1,4-. beta. -D-glucan synthase from Dictyostelium discoideum
Various aspects of research concerning Dictyostelium discoideum are presented. The initial focus of this project was upon: the characterization of potential probes for the cellulose synthase (antibody and nucleic acid), the determination of the cultural induction conditions of cellulose synthesis, the solubilization of the enzyme activity, the development of a non-inhibitory disruption buffer, the generation and isolation of mutant strains deficient in cellulose synthesis, and the development of the capability to determine the degree of polymerization of the in vitro product. I have briefly summarized our most significant findings with only selected data sets being shown in this report in the interest of brevity.
Date:
January 15, 1992
Creator:
Blanton, R.L.
Object Type:
Report
System:
The UNT Digital Library
Monolithic solid oxide fuel cell technology advancement for coal- based power generation
The program is conducted by a team consisting of AiResearch Los Angeles Division of Allied-Signal Aerospace Company and Argonne National Laboratory (ANL). The objective of the program is to advance materials and fabrication methodologies to develop a monolithic solid oxide fuel cell (MSOFC) system capable of meeting performance, life, and cost goals for coal-based power generation. The program focuses on materials research and development, fabrication process development, cell/stack performance testing and characterization, cost and system analysis, and quality development.
Date:
January 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Semiclassical chaos, the uncertainty principle, and quantum dissipation
Article on semiclassical chaos, the uncertainty principle, and quantum dissipation.
Date:
June 15, 1992
Creator:
Bonci, Luca; Roncaglia, Roberto; West, Bruce J. & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B0156.0695]
Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "August Deets, Newcastle football coach."
Date:
December 15, 1992
Creator:
McDaniel, David
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0307]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
June 15, 1992
Creator:
Sisney, Steve
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0154.0347]
Photograph used for a newspaper owned by the Oklahoma Publishing Company.
Date:
July 15, 1992
Creator:
Hoke, Doug
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0140.0529]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Members of the Company, the modern dance troupe at Northwest Classen High School, perform one of the routines for their opening Night show."
Date:
December 15, 1992
Creator:
Beckel, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0139.0458]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Myron Coleman, Attorney & Civic Leader"
Date:
September 15, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0137.0706]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Okarche-Just as women are making inroads into formerly all-male territory, there is similar transition occurring in the former female-dominated bastion of cheerleading."
Date:
June 15, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0312B.0139]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Wendy Jones of Oklahoma City, a supporter of incumbent Oklahoma County Clerk Ralph Hess, tries some last-minute persuasion Tuesday at the intersection of Portland Avenue and NW 39 Expressway."
Date:
September 15, 1992
Creator:
Southerland, Paul
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Evaluation of Gas-Reburning and Low NOx Burners on a Wall Fired Boiler
Low NO{sub x} burners operate on the principle of delayed mixing between the coal fuel and burner air, so that less NO{sub x} is formed. Gas reburning is a combustion modification technique that consists of firing 80--85 percent of the fuel corresponding to the total heat release in the lower furnace. Reduction of NO{sub x} to molecular nitrogen (N{sub 2}) is accomplished via the downstream injection of the remaining fuel requirement in the form of natural gas (which also reduces the total SO{sub x} emissions). In a third stage, burnout air is injected at the lower temperatures in the upper furnace to complete the combustion process without generating significant additional NO{sub x}. The specific goal of this project is to demonstrate NO{sub x} emission reductions of 75 percent or more as a result of combing Low NO{sub x} Burners and Gas Reburning on a utility boiler having the design characteristics mentioned above. A Host Site Agreement has been signed by EER and a utility company in the State of Colorado: Public Service Company of Colorado (Cherokee Unit No. 3, 172 MW{sub e}) front wall fired boiler near Denver.
Date:
January 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Evaluation of gas-reburning and low NO sub x burners on a wall fired boiler
The primary objective of this CCT project is to evaluate the use of Gas Reburning and Low NO{sub x} Burners (GR-LNB) for NO{sub x} emission control from a wall fired boiler. It is anticipated that, if the demonstration is successful, the GR-LNB technology could become commercialized during the 1990's and will be capable of (1) achieving significant reduction in the emissions of nitrogen oxides and sulfur dioxide (another acid rain precursor) from existing facilities to minimize environmental impacts such as transboundary and interstate pollution and/or (2) providing for future energy needs in an environmentally acceptable manner. Low NO{sub x} burners are designed to delay the mixing of the coal fuel with combustion air to minimize the NO{sub x} formation. Typically, one may obtain up to 50% reduction in NO{sub x} emissions through the use of LNB. For LNB applications, the technology is developed and a number of LNB designs are commercially available.
Date:
April 15, 1992
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Guest Artist Recital: 1992-10-15 - Richard Cionco, piano
Access:
Use of this item is restricted to the UNT Community
Guest artist recital performed at UNT College of Music Concert Hall as part of the 1992 American Liszt Society Festival.
Date:
October 15, 1992
Creator:
Cionco, Richard
Object Type:
Sound
System:
The UNT Digital Library
Nuclear physics at extreme energy density
This report discusses topics in the following areas: QCD transport theory; minijets in hadronic and nuclear collisions; lattice gauge theory; hadronic matter and other studies; and strong electromagnetic fields. (LSP)
Date:
May 15, 1992
Creator:
Mueller, B.
Object Type:
Report
System:
The UNT Digital Library