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A Multipactoring Analysis of the Accelerating Cavity for RHIC
None
Date:
November 9, 1992
Creator:
A., Ratti
Object Type:
Report
System:
The UNT Digital Library
Development of an electrochemical hydrogen separator
The electrochemical hydrogen separator (EHS), under development at ERC, has several attractive features: The operating temperature (150{degree}C--200{degree}C) is higher than those associated with the currently available devices and is compatible with the low temperature shift reactors. The EHS can operate at atmospheric as well as elevated pressures and the product H{sub 2} is available at the feed stream pressure. High hydrogen recovery factor: 90% H{sub 2} recovery from feed streams containing less than 10% hydrogen is feasible. High hydrogen purity: The product H{sub 2} purity is >99% (dry basis) and is virtually independent of H{sub 2} concentration in the feed gas. The process is continuous. Low energy cost: Depending upon the operating conditions, the energy requirement varies between 2 to 6 kWh/1000 SCF of recovered hydrogen.
Date:
November 1, 1992
Creator:
Abens, S.; Fruchtman, J. & Kush, A.
Object Type:
Report
System:
The UNT Digital Library
Abilene Philharmonic Playbill: November 14, 1992
Program for an Abilene Philharmonic concert that ran from November 14th to December 12th during the 43rd season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
November 1992
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 10, Ed. 1 Friday, November 6, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 6, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 11, Ed. 1 Friday, November 13, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 13, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 12, Ed. 1 Friday, November 20, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
November 20, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Heavy rainfall at the SRS in July, August and October of 1990
The Savannah River Site experienced intense periods of rainfall on July 25, August 22, October 10--12, and October 22--23, 1990. This report compares the rainfall from these storms with previous storms and with the 100 year rainfall estimates.
Date:
November 1, 1992
Creator:
Addis, R. P. & Kurzeja, R. J.
Object Type:
Report
System:
The UNT Digital Library
The effect of DIGM and irradiation-induced grain growth on interdiffusion in bilayer ion-beam mixing experiments
Experiments were performed demonstrating that ion irradiation enhances diffusion-induced grain boundary migration (DIGM) in polycrystalline Au/Cu bilayers. Here, a model is presented relating film-averaged Cu composition in Au with treatment time, grain size and film thickness. Application of this model to the experimental results indicates that irradiation enhances DIGM by increasing the grain boundary velocity. Effects of DIGM and irradiation-induced grain growth on the temperature dependence of ion mixing in bilayers are discussed.
Date:
November 1, 1992
Creator:
Alexander, D. E.; Rehn, L. E.; Baldo, P. M. & Gao, Y.
Object Type:
Article
System:
The UNT Digital Library
The effect of DIGM and irradiation-induced grain growth on interdiffusion in bilayer ion-beam mixing experiments
Experiments were performed demonstrating that ion irradiation enhances diffusion-induced grain boundary migration (DIGM) in polycrystalline Au/Cu bilayers. Here, a model is presented relating film-averaged Cu composition in Au with treatment time, grain size and film thickness. Application of this model to the experimental results indicates that irradiation enhances DIGM by increasing the grain boundary velocity. Effects of DIGM and irradiation-induced grain growth on the temperature dependence of ion mixing in bilayers are discussed.
Date:
November 1, 1992
Creator:
Alexander, D. E.; Rehn, L. E.; Baldo, P. M. & Gao, Y.
Object Type:
Article
System:
The UNT Digital Library
Ensemble: 1992-11-13 - All-Campus String Orchestra
Orchestra concert performed at the UNT College of Music Concert Hall.
Date:
November 13, 1992
Creator:
All-Campus String Orchestra
Object Type:
Sound
System:
The UNT Digital Library
In situ containment and stabilization of buried waste
The objective of the project was to develop, demonstrate and implement advanced grouting materials for the in-situ installation of impermeable, durable subsurface barriers and caps around waste sites and for the in-situ stabilization of contaminated soils. Specifically, the work was aimed at remediation of the Chemical Waste (CWL) and Mixed Waste Landfills (MWL) at Sandia National Laboratories (SNL) as part of the Mixed Waste Landfill Integrated Demonstration (MWLID). This report documents this project, which was conducted in two subtasks. These were (1) Capping and Barrier Grouts, and (2) In-situ Stabilization of Contaminated Soils. Subtask 1 examined materials and placement methods for in-situ containment of contaminated sites by subsurface barriers and surface caps. In Subtask 2 materials and techniques were evaluated for in-situ chemical stabilization of chromium in soil.
Date:
November 1, 1992
Creator:
Allan, M. L.; Kukacka, L. E. & Heiser, J. H.
Object Type:
Report
System:
The UNT Digital Library
In situ containment and stabilization of buried waste. Annual report FY 1992
The objective of the project was to develop, demonstrate and implement advanced grouting materials for the in-situ installation of impermeable, durable subsurface barriers and caps around waste sites and for the in-situ stabilization of contaminated soils. Specifically, the work was aimed at remediation of the Chemical Waste (CWL) and Mixed Waste Landfills (MWL) at Sandia National Laboratories (SNL) as part of the Mixed Waste Landfill Integrated Demonstration (MWLID). This report documents this project, which was conducted in two subtasks. These were (1) Capping and Barrier Grouts, and (2) In-situ Stabilization of Contaminated Soils. Subtask 1 examined materials and placement methods for in-situ containment of contaminated sites by subsurface barriers and surface caps. In Subtask 2 materials and techniques were evaluated for in-situ chemical stabilization of chromium in soil.
Date:
November 1, 1992
Creator:
Allan, M. L.; Kukacka, L. E. & Heiser, J. H.
Object Type:
Report
System:
The UNT Digital Library
Proton therapy construction projects in the United States
Proton and heavy-ion radiation therapy has been taking place now for 40 years, at many accelerator laboratories around the world, essentially all of these centers built originally for physics research. The high degree of promise shown for using these particles for treating and curing cancer has stimulated the medical community to look seriously at building dedicated accelerator facilities in a hospital setting, where more rapid progress can be made in clinical research, and development of effective treatments with these beams. In the United States, the first such facility, at the Loma Linda University Medical Center, has been in operation now for two years, and is currently treating a total of 35 to 40 patients per day. Two new projects are being designed at present, one at the Massachusetts General Hospital in Boston, Massachusetts, the second a joint project of the Lawrence Berkeley Laboratory and the University of California at Davis Medical Center in Sacramento, California. This paper will discuss accelerator and beam characteristics relevant to the proton-therapy application, and will present performance and operations characteristics for the Loma Linda facility, as well as details of the plans, process and progress towards construction of the new facilities in Boston and Sacramento.
Date:
November 1, 1992
Creator:
Alonso, J. R.
Object Type:
Article
System:
The UNT Digital Library
Proton therapy construction projects in the United States
Proton and heavy-ion radiation therapy has been taking place now for 40 years, at many accelerator laboratories around the world, essentially all of these centers built originally for physics research. The high degree of promise shown for using these particles for treating and curing cancer has stimulated the medical community to look seriously at building dedicated accelerator facilities in a hospital setting, where more rapid progress can be made in clinical research, and development of effective treatments with these beams. In the United States, the first such facility, at the Loma Linda University Medical Center, has been in operation now for two years, and is currently treating a total of 35 to 40 patients per day. Two new projects are being designed at present, one at the Massachusetts General Hospital in Boston, Massachusetts, the second a joint project of the Lawrence Berkeley Laboratory and the University of California at Davis Medical Center in Sacramento, California. This paper will discuss accelerator and beam characteristics relevant to the proton-therapy application, and will present performance and operations characteristics for the Loma Linda facility, as well as details of the plans, process and progress towards construction of the new facilities in Boston and Sacramento.
Date:
November 1, 1992
Creator:
Alonso, J. R.
Object Type:
Article
System:
The UNT Digital Library
Thermal/chemical stability of ceramic cross flow filter materials
Westinghouse has undertaken a two phase program to determine possible long-term, high temperature influence that advanced coal-based power system environments may have on the stability of the ceramic cross flow filter elements. During the past year, we have principally focused our efforts on developing an understanding of the stability of the alumina/mullite filter material at high temperature (i.e., 870, 980, and 1100{degrees}C) under oxidizing conditions which contain gas phase alkali species. The alumina/mullite cross flow liter material that has consistently been used throughout the flow-through gas phase alkali testing segment of this program, consists of mullite rods or needles that are embedded within an amorphous phase which contains corundum (Al{sub 2}O{sub 3}) and anorthite (CaAl{sub 2}Si{sub 2}O{sub 8}). Due to the rapid cooling rate that was used to produce the alumina/mullite filter disc material from high fire, the matrix consists of 59.6 wt% mullite, 30.5 wt% amorphous, 5.1 wt% anorthite, and 4.8 wt% alumina. The relatively low, as-fabricated, hot strength of this material (841{plus_minus}259 psi at 870{degrees}C) is a direct result of the high amorphous content which softens at temperatures of 870{degrees}C. Load versus deflection curves as a function of temperature indicate that this material is relatively brittle up to …
Date:
November 1, 1992
Creator:
Alvin, M. A.; Bahovchin, D. M.; Lippert, T. E.; Tressler, R. E. & McNerney, K. B.
Object Type:
Article
System:
The UNT Digital Library
Southwest Retort, Volume 46, Number 3, November 1992
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
November 1992
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Wabash River Coal Gasification Repowering Project
The Destec gasification process features an oxygen-blown, two stage entrained flow gasifier. PSI will procure coal for the Project consistent with the design specification ranges of Destec`s coal gasification facility. Destec`s plant will be designed to accept coal with a maximum sulfur content of 5.9% (dry basis) and a minimum energy content of 13,5000 BTU/pound (moisture and ash free basis). PSI and Destec will test at least two other coals for significant periods during the demonstration period. In the Destec process, coal is ground with water to form a slurry. It is then pumped into a gasification vessel where oxygen is added to form a hot raw gas through partial combustion. Most of the noncarbon material in the coal melts and flows out the bottom of the vessel forming slag -- a black, glassy, non-leaching, sand-like material. Particulates, sulfur and other impurities are removed from the gas before combustion to make it acceptable fuel for the gas turbine. The synthetic fuel gas (syngas) is piped to a General Electric MS 7001F high temperature combustion turbine generator. A heat recovery steam generator recovers gas turbine exhaust heat to produce high pressure steam. This steam and the steam generated in the gasification …
Date:
November 1, 1992
Creator:
Amick, P.; Mann, G. J.; Cook, J. J.; Fisackerly, R. & Spears, R. C.
Object Type:
Article
System:
The UNT Digital Library
Specialized video systems for use in waste tanks. Revision 1
The Robotics Development Group at the Savannah River Site is developing a remote video system for use in underground radioactive waste storage tanks at the Savannah River Site, as a portion of its site support role. Viewing of the tank interiors and their associated annular spaces is an extremely valuable tool in assessing their condition and controlling their operation. Several specialized video systems have been built that provide remote viewing and lighting, including remotely controlled tank entry and exit. Positioning all control components away from the facility prevents the potential for personnel exposure to radiation and contamination. The SRS waste tanks are nominal 4.5 million liter (1.3 million gallon) underground tanks used to store liquid high level radioactive waste generated by the site, awaiting final disposal. The typical waste tank (Figure 1) is of flattened shape (i.e. wider than high). The tanks sit in a dry secondary containment pan. The annular space between the tank wall and the secondary containment wall is continuously monitored for liquid intrusion and periodically inspected and documented. The latter was historically accomplished with remote still photography. The video systems includes camera, zoom lens, camera positioner, and vertical deployment. The assembly enters through a 125 mm …
Date:
November 1, 1992
Creator:
Anderson, E. K.; Robinson, C. W. & Heckendorn, F. M.
Object Type:
Article
System:
The UNT Digital Library
Development of phosphate-based ceramic membranes
Goal was to develop microporous ceramic membranes by coating sols that contain nanoparticles onto porous ceramic supports. They could be used for either gas phase separations or liquid phase separations involving low molecular weight solutes. This required the synthesis of Sols containing particles in the range from 2 to 10 nm. Procedures for preparing nanoparticulate sols of silica, alumina, and aluminosilicates of various compositions are given. Unsupported ceramic membranes prepared from these sols had mean pore diameters of <10 [Angstrom] (silica), ca. 35 [Angstrom] (aluminosilicate). The alumina membranes display both microporosity (mean pore diameters <20 [Angstrom]) and mesoporosity (mean pore diameters >20 [Angstrom]). These nanoparticulate sols were deposited onto porous supports. Four methods of were investigated. Dip coating appeared to give the best performance of all of these techniques and was easily implemented. Deposition of particles within porous supports by permformation was also demonstrated. Critical point drying studies of membranes were initiated, but progress was limited. Slip casting could not be successfully used to produce a supported membrane free from cracks.
Date:
November 1, 1992
Creator:
Anderson, M. A.; Zeltner, W. A. & Hill, C. G. Jr.
Object Type:
Report
System:
The UNT Digital Library
Development of phosphate-based ceramic membranes. Final report
Goal was to develop microporous ceramic membranes by coating sols that contain nanoparticles onto porous ceramic supports. They could be used for either gas phase separations or liquid phase separations involving low molecular weight solutes. This required the synthesis of Sols containing particles in the range from 2 to 10 nm. Procedures for preparing nanoparticulate sols of silica, alumina, and aluminosilicates of various compositions are given. Unsupported ceramic membranes prepared from these sols had mean pore diameters of <10 {Angstrom} (silica), ca. 35 {Angstrom} (aluminosilicate). The alumina membranes display both microporosity (mean pore diameters <20 {Angstrom}) and mesoporosity (mean pore diameters >20 {Angstrom}). These nanoparticulate sols were deposited onto porous supports. Four methods of were investigated. Dip coating appeared to give the best performance of all of these techniques and was easily implemented. Deposition of particles within porous supports by permformation was also demonstrated. Critical point drying studies of membranes were initiated, but progress was limited. Slip casting could not be successfully used to produce a supported membrane free from cracks.
Date:
November 1, 1992
Creator:
Anderson, M. A.; Zeltner, W. A. & Hill, C. G. Jr.
Object Type:
Report
System:
The UNT Digital Library
Combustion Engineering IGCC Repowering Project
C-E gasification process uses an entrained-flow, two-stage, slagging bottom gasifier. Figure 1 shows a schematic of the gasifier concept. Some of the coal and all of the char is fed to the combustor section, while the remaining coal is fed to the reducter section of the gasifier. The coal and char in the combustor is mixed with air and the fuel-rich mixture is burned creating the high temperature necessary to gasify the coal and melt the mineral matter in the coal. The slag flows through a slag tap at the bottom of the combustor into a water-filled slag tank where it is quenched and transformed into an inert, glassy, granular material. This vitrified slag is non-leaching, making it easy to dispose of in an environmentally acceptable manner. The hot gas leaving the combustor enters the second stage called the reductor. In the reducter, the char gasification occurs along the length of the reductor zone until the temperature falls to a point where the gasification kinetics become too slow. Once the gas temperature reaches this level, essentially no further gasification takes place and the gases subsequently are cooled with convective surface to a temperature low enough to enter the cleanup system. …
Date:
November 1, 1992
Creator:
Andrus, H. E.; Thibeault, P. R. & Gibson, C. R.
Object Type:
Article
System:
The UNT Digital Library
Catalyst and process development for synthesis gas conversion to isobutylene. Quarterly report, July 1, 1992--September 30, 1992
A series of zirconia catalysts prepared by a modified sol gel procedure, coprecipitation with ammonium hydroxide, and by a hydrothermal method were evaluated for catalytic activity. These catalysts were prepared containing silicon, thorium, titanium, cerium and the alkali metals. A catalyst containing 2% thorium on zirconia was the most active. The isobutylene and isobutane selectivity were 19.4 wt % and 1.82 wt %, respectively. Macro- and micro-kinetic models indicate that C0{sub 2} formation inhibits the rate of CO conversion, hydrogen is dissociatively adsorbed, and CO is molecularly adsorbed. The microkinetic model indicates the strengthening of the metaloxygen bond might increase the production rate of isobutylene.
Date:
November 13, 1992
Creator:
Anthony, R. G. & Akgerman, A.
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0105.0322]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Oklahoma runningack Dewell Brewer (23) tries to break away from an OSU tackle during Saturday's 15-15 tie in Stillwater."
Date:
November 14, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[Photograph 2012.201.B0151.0184]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Clark Curry and his son, Scott, review John Birch Society material."
Date:
November 25, 1992
Creator:
Argo, Jim
Object Type:
Photograph
System:
The Gateway to Oklahoma History