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[RE: State-Wide Impact of the Regional Institutes]
A memo from Julie Abel, program associate at the Getty Center for Education in the Arts, to the Regional Institute Directors. The memo is in regards to updating the Center's survey they had asked the Directors to complete in the Summer of 1991 for the last year's Advisory Committee Notebook. In the memo, Abel has attached a chart showing the state-wide impact of the Regional Institutes that was complied form the information. Abel requests updated figures from 1992 by September 24, 1992.
Date:
September 15, 1992
Creator:
Abel, Julie
Object Type:
Letter
System:
The UNT Digital Library
[Letter from Julie Anne Abel to Regional Institute Directors, September 17, 1992]
A letter from Julie Anne Abel to regional institute directors about requesting more information from the directors in order to update a chart for The Getty Center for Education in the Arts Advisory Committee. Attached documents include cumulative data for the North Texas Institute for Educators on the Visual Arts and a fax letter.
Date:
September 17, 1992
Creator:
Abel, Julie Anne
Object Type:
Letter
System:
The UNT Digital Library
Radionuclide characterization at US commercial light-water reactors for decommissioning assessment: Distributions, inventories, and waste disposal considerations
A continuing research program, conducted by Pacific Northwest Laboratory for the US Nuclear Regulatory Commission, characterizing radionuclide concentrations associated with US light-water reactors has been conducted for more than a decade. The research initially focused upon sampling and analytical measurements for the purpose of establishing radionuclide distributions and inventories for decommissioning assessment, since very little empirical data existed. The initial phase of the research program examined radionuclide concentrations and distributions external to the reactor vessel at seven US light water reactors. Later stages of the research program have examined the radionuclide distributions in the highly radioactive reactor internals and fuel assembly. Most recently, the research program is determining radionuclide concentrations in these highly radioactive components and comparing empirical results with those derived from the several nonempirical methodologies employed to estimate radionuclide inventories for disposal classification. The results of the research program to date are summarized, and their implications and significance for the decommissioning process are noted.
Date:
September 1, 1992
Creator:
Abel, K. H.; Robertson, D. E. & Thomas, C. W.
Object Type:
Article
System:
The UNT Digital Library
Radionuclide characterization at US commercial light-water reactors for decommissioning assessment: Distributions, inventories, and waste disposal considerations
A continuing research program, conducted by Pacific Northwest Laboratory for the US Nuclear Regulatory Commission, characterizing radionuclide concentrations associated with US light-water reactors has been conducted for more than a decade. The research initially focused upon sampling and analytical measurements for the purpose of establishing radionuclide distributions and inventories for decommissioning assessment, since very little empirical data existed. The initial phase of the research program examined radionuclide concentrations and distributions external to the reactor vessel at seven US light water reactors. Later stages of the research program have examined the radionuclide distributions in the highly radioactive reactor internals and fuel assembly. Most recently, the research program is determining radionuclide concentrations in these highly radioactive components and comparing empirical results with those derived from the several nonempirical methodologies employed to estimate radionuclide inventories for disposal classification. The results of the research program to date are summarized, and their implications and significance for the decommissioning process are noted.
Date:
September 1, 1992
Creator:
Abel, K. H.; Robertson, D. E. & Thomas, C. W.
Object Type:
Article
System:
The UNT Digital Library
Upgraded phase control system for superconducting low-velocity accelerating structures
Microphonic-induced fluctuations in the RF eigenfrequency of superconducting (SC) slow-wave structures must be compensated by a fast-tuning system in order to control the RF phase. The tuning system must handle a reactive power proportional to the product of the frequency range and the RF energy content of the Rf cavity. The fast tuner for the SC resonators in the ATLAS heavy-ion linac is a voltage-controlled reactance based on an array of PIN diodes operating immersed in liquid nitrogen. This paper discusses recent upgrades to the ATLAS fast tuner which can now provide as much as 30 KVA of reactive tuning capability with a real RF power loss of less than 300 watts. The design was guided by numerical modeling of all elements of the device. Also discussed is the RF coupler which can couple 30 KW from 77 K tuner to a 42 K resonant cavity with less than 2 W of RF loss into 4.2 K.
Date:
September 1, 1992
Creator:
Added, N.; Clifft, B. E. & Shepard, K. W.
Object Type:
Article
System:
The UNT Digital Library
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 2, Ed. 1 Friday, September 4, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 4, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 3, Ed. 1 Friday, September 18, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 18, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Fifteenth Street News (Midwest City, Okla.), Vol. 21, No. 4, Ed. 1 Friday, September 25, 1992
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
September 25, 1992
Creator:
Addington, Kathy
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Columbia River Basin Fish and Wildlife Program Annual Implementation Work Plan for Fiscal Year 1993.
The Columbia River Basin Fish and Wildlife Program (Program) was developed by the Northwest Power Planning Council (Council) in accordance with Public Law 96-501, the Pacific Northwest Electric Power Planning and Conservation Act (Act). The purpose of the Program is to guide the Bonneville Power Administration (BPA) and other Federal agencies in carrying out their responsibilities to protect, mitigate, and enhance fish and wildlife of the Columbia River Basin. The Annual Implementation World Plan (AIWP) presents BPA`s plans for implementing the Program during fiscal year (FY) 1993. The FY 1993 AIWP emphasizes continuation of 143 ongoing or projecting ongoing Program projects, tasks, or task orders, most of which involve protection, mitigation, or enhancement of anadromous fishery resources. The FY 1993 AIWP also contains three new Program projects or tasks that are planned to start in FY 1993.
Date:
September 1, 1992
Creator:
Administration, United States. Bonneville Power; S.), Northwest Power Planning Council (U. & Authority, Columbia Basin Fish and Wildlife
Object Type:
Report
System:
The UNT Digital Library
Radiative heat transfer in coal furnaces
A hybrid technique has been developed to solve three-dimensional spectral radiation transport equations for absorbing, emitting and anisotropically scattering media. An optimal mix of computational speed and accuracy is obtained by combining the discrete ordinate method (S{sub 4}), modified differential approximation (MDA) and P{sub 1} approximation for use in different range of optical thicknesses. The technique is used in conjunction with a char burnout model and spectroscopic data for H{sub 2}O, CO{sub 2}, CO, char, soot and ash to determine the influence of ash composition, ash content and coal preparation on furnace heat absorption.
Date:
September 1, 1992
Creator:
Ahluwalia, R. K. & Im, K. H.
Object Type:
Article
System:
The UNT Digital Library
The operational status of the Booster injector for the AGS accelerator complex at BNL
The Booster synchrotron at Brookhaven National Laboratory has been incorporated into the accelerator chain at the Alternating Gradient Synchrotron (AGS) complex. After a successful first commissioning effort in the spring of 1991, the Booster has been part of this year`s silicon, gold and proton physics runs. After a brief review of the Booster design goals, and of the early commissioning, this paper will summarize this year`s activities.
Date:
September 1, 1992
Creator:
Ahrens, L.; Bleser, E.; Brennan, J. M.; Gardner, C.; Gill, E.; Glenn, J. W. et al.
Object Type:
Article
System:
The UNT Digital Library
Effect of Metallic-Coating Properties on the Tribology of Coated and Oil-Lubricated Ceramics
Friction and wear behavior was determined for zirconia ceramics lubricated with solid coatings (Ag, Au, and Nb) deposited by ion-beam-assisted-deposition (IBAD) techniques, and a polyol-ester-based synthetic oil. Although the use of soft Ag and Au coatings as solid lubricants in conjunction with the synthetic oil significantly reduced the friction and wear under boundary lubrication at temperatures up to 250[degrees]C, these films had poor durability. In contrast, the Nb coating was more durable (in terms of chemical reactivity and adhesion during the tribo-tests) than were the Ag or Au films. However, the friction and wear behavior of the Nb-coated zirconia was poorer than that of the ceramics coated with Ag or Au.
Date:
September 1, 1992
Creator:
Ajayi, O. O.; Erdemir, A.; Fenske, G. R.; Erck, R. A.; Hsieh, J. H. & Nichols, F. A.
Object Type:
Article
System:
The UNT Digital Library
Atmospheric fluidized bed combustion advanced system concepts applicable to small industrial and commercial markets. Topical report, Level 2
As part of an overall strategy to promote FBC coal combustion and to improve the marketability of the eastern coals, the US Department of Energy`s Morgantown Energy Research Center awarded a three level contract to Riley Stoker Corporation to develop advanced Multi Solids Fluidized Bed (MSFB) boiler designs. The first level of this contract targeted the small package boiler (10,000--50,000 lb/hr steam) and industrial size boiler (75,000--150,000 lb/hr steam) markets. Two representative sizes, 30,000 lb/hr and 110,000 lb/hr of steam, were selected for the two categories for a detailed technical and economic evaluation. Technically, both the designs showed promise, however, the advanced industrial design was favored on economic considerations. It was thus selected for further study in the second level of the contract. Results of this Level-2 effort, presented in this report, consisted of testing the design concept in Riley`s 4.4 MBtu/hr pilot MSFB facility located at Riley Research Center in Worcester, Mass. The design and economics of the proof of concept facility developed in Level-1 of the contract were then revised in accordance with the findings of the pilot test program. A host site for commercial demonstration in Level-3 of the contract was also secured. It was determined that …
Date:
September 1, 1992
Creator:
Ake, T. R.; Dixit, V. B. & Mongeon, R. K.
Object Type:
Report
System:
The UNT Digital Library
Hot gas desulfurization with sorbents containing oxides of zinc, iron, vanadium and copper. Quarterly technical progress report, July 1992
The main objective of this research is to evaluate the desulfurization performance of novel sorbents consisting of different combinations of zinc, iron, vanadium and copper oxides; and to develop a sorbent which can reduce H{sub 2}S levels to less than 1 ppmv, which can stabilize zinc, making operations above 650{degrees}C possible, and which can produce economically recoverable amounts of elemental sulfur during regeneration. This objective will be accomplished by evaluating the sorbent performance using fixed-bed and TGA experiments supported by sorbent characterization at various reaction extents. In the seventh quarter, the screening of the promoted sorbents in the packed bed reactor was continued. The results of this work were presented at the 1992 University Coal Research Contractors, Review Conference at Pittsburgh, PA.
Date:
September 1, 1992
Creator:
Akyurtlu, A. & Akyurtlu, J. F.
Object Type:
Report
System:
The UNT Digital Library
Diffusion-induced grain boundary migration during ion beam mixing of Au/Cu bilayers
Experiments were performed to evaluate the effect of 1.5 MeV Kr irradiation on diffusion-induced grain boundary migration (DIGM) in Au/Cu bilayers in the temperature range of 300{le}T{le}050K. The experimental results were consistent with DIGM occurring in bilayers both during irradiation and during annealing treatments. Rutherford backscattering spectrometry showed a nearly uniform distribution of Cu present through the entire thickness of appropriately prepared polycrystalline Au films irradiated or annealed at temperatures {ge}400K. No parallel effect was seen in similarly treated single-crystal films. In each polycrystalline sample studied, irradiation resulted in greater amounts of Cu present uniformly in the Au compared to annealing-only. The magnitudes of measured Cu compositions were substantially greater than that expected solely from grain boundary diffusion. A simple analysis of the process indicated that ion irradiation affects DIGM by increasing the composition of Cu present in alloyed zones and/or by increasing the grain boundary velocity in the Au.
Date:
September 1, 1992
Creator:
Alexander, D. E.; Baldo, P. M. & Rehn, L. E.
Object Type:
Article
System:
The UNT Digital Library
Diffusion-induced grain boundary migration during ion beam mixing of Au/Cu bilayers
Experiments were performed to evaluate the effect of 1.5 MeV Kr irradiation on diffusion-induced grain boundary migration (DIGM) in Au/Cu bilayers in the temperature range of 300{le}T{le}050K. The experimental results were consistent with DIGM occurring in bilayers both during irradiation and during annealing treatments. Rutherford backscattering spectrometry showed a nearly uniform distribution of Cu present through the entire thickness of appropriately prepared polycrystalline Au films irradiated or annealed at temperatures {ge}400K. No parallel effect was seen in similarly treated single-crystal films. In each polycrystalline sample studied, irradiation resulted in greater amounts of Cu present uniformly in the Au compared to annealing-only. The magnitudes of measured Cu compositions were substantially greater than that expected solely from grain boundary diffusion. A simple analysis of the process indicated that ion irradiation affects DIGM by increasing the composition of Cu present in alloyed zones and/or by increasing the grain boundary velocity in the Au.
Date:
September 1, 1992
Creator:
Alexander, D. E.; Baldo, P. M. & Rehn, L. E.
Object Type:
Article
System:
The UNT Digital Library
Yucca Mountain Exploratory Studies Facilities: Construction status; Extended summary
This paper discusses the progress to date on the construction planning development of the Yucca Mountain Site Characterization Project Exploratory Studies Facilities (ESF).
Date:
September 1, 1992
Creator:
Allan, J. & Leonard, T. M.
Object Type:
Report
System:
The UNT Digital Library
Results of an experiment in a Zion-like geometry to investigate the effect of water on the containment basement floor on direct containment heating (DCH) in the Surtsey Test Facility: The IET-4 test
This document discusses the fourth experiment of the Integral Effects Test (IET-4) series which was conducted to investigate the effects of high pressure melt ejection on direct containment heating. Scale models (1:10) of the Zion reactor pressure vessel (RPV), cavity, instrument tunnel, and subcompartment structures were constructed in the Surtsey Test Facility at Sandia National Laboratories. The RPV was modeled with a melt generator that consisted of a steel pressure barrier, a cast MgO crucible, and a thin steel inner liner. The melt generator/crucible had a hemispherical bottom head containing a graphite limitor plate with a 3.5-cm exit hole to simulate the ablated hole in the RPV bottom head that would be tonned by tube ejection in a severe nuclear power plant accident. The reactor cavity model contained 3.48 kg of water with a depth of 0.9 cm that corresponded to condensate levels in the Zion plant. A 43-kg initial charge of iron oxide/aluminum/chromium thermite was used to simulate corium debris on the bottom head of the RPV. Molten thermite was ejected into the scaled reactor cavity by 6.7 MPa steam. IET-4 replicated the third experiment in the IET series (IET-3), except the Surtsey vessel contained slightly more preexisting oxygen …
Date:
September 1, 1992
Creator:
Allen, M. D.; Blanchat, T. K.; Pilch, M. & Nichols, R. T.
Object Type:
Report
System:
The UNT Digital Library
Electron cyclotron resonance heating in the microwave tokamak experiment
This paper presents the results from a series of Electron Cyclotron Resonance Heating (ECRH) experiments on the Microwave Tokamak Experiment (MTX). On-axis heating at B{sub T} = 5T (f{sub ce} = 140 GHz) has been performed at electron densities up to cutoff. We have used both a long-pulse gryotron ({approximately}200 kW, {approximately}0.1s) and a pulsed Free Electron Laser (FEL) as microwave sources. Gyrotron experiments with power densities corresponding to 4 MW m{sup {minus}3}. A far infrared (FIR) polarimeter measured peaking of plasma current profiles in some discharges during the ECRH pulse. During high-power single-pulse FEL experiments, single-pass microwave !transmission measurements show nonlinear effects; i.e., higher transmission than predicted by linear theory. A corrugated-wall duct was used in the tokamak port to increase the gradient of the parallel refractive index n{sub parallel} of the incident wave, and increased absorption was observed. Evidence of electron tail heating during FEL pulses was observed on soft x-ray and ECE diagnostics. These results are in agreement with predictions of nonlinear theory; extrapolation of this theory to reactor-like conditions indicates efficient absorption and heating. A Laser Assisted Particle Probe Spectroscopy (LAPPS) diagnostic provided estimates of the vacuum electric field of the FEL which were consistent with …
Date:
September 1, 1992
Creator:
Allen, S. L.; Casper, T. A. & Fenstermacher, M. E.
Object Type:
Article
System:
The UNT Digital Library
Challenge inspections in Arms Control treaties: Any lessons for strengthening NPT verification?
Recent revelations of an ongoing and sophisticated nuclear weapons development program in Iraq have lead to suggestions for strengthening International Atomic Energy Agency (IAEA) safeguards. Especially troubling was the realization that safeguards, as presently applied, could not possibly have detected such a program. It is clear that the inspections which have taken place in Iraq since the Gulf War could only have been imposed on a nation which had suffered a severe military defeat. It has, however, been argued that challenge or ``challenge like`` inspections already incorporated in or proposed for the Treaty on Conventional Armed Forces in Europe (the CFE Treaty) the Chemical Weapons Convention (CWC) and the Treaty Between the United States and the USSR on the Reduction and Limitation of Strategic offensive Arms (START) might serve as models for enhanced special inspections in the Treaty on the Non-Proliferation of Nuclear Weapons (the NPT). The expectation that none of the challenge or challenge like inspections in the above treaties would provide a model for the NPT was confirmed although certain characteristics of these inspections do provide useful points of departure. Although the context of challenge inspections in CWC bears substantial similarity to the NPT, it is from the …
Date:
September 1, 1992
Creator:
Allentuck, J.
Object Type:
Article
System:
The UNT Digital Library
The steam explosion potential for an unseated SRS reactor septifoil
Control rods in the Savannah River Site`s K Reactor are contained within housings composed of seven channels (``septifoils``). Each septifoil is suspended from the top of the reactor and is normally seated on an upflow pin that channels coolant to the septifoil. Forced flow to the septifoil would be eliminated in the unlikely event of a septifoil unseated upon installation, i.e., if the septifoil is not aligned with its upflow pin. If this event were not detected, control rod melting and the interaction of molten metal with water might occur. This paper describes a methodology used to address the issue of steam explosions that might arise by this mechanism. The probability of occurrence of a damaging steam explosion given an unseated septifoil was found to be extremely low. The primary reasons are: (1) the high probability that melting will not occur, (2) the possibility of material holdup by contact with the outer septifoil housing, (3) the relative shallowness of the pool `Of water into which molten material might fall, (4) the probable absence of a trigger, and (5) the relatively large energy release required to damage a nearby fuel assembly. The methodology is based upon the specification of conditions prevailing …
Date:
September 1, 1992
Creator:
Allison, D. K.; Hyder, M. L.; Yau, W. W. F. & Smith, D. C.
Object Type:
Article
System:
The UNT Digital Library
Single-station integral measures of atmospheric stagnation, ventilation, and recirculation
In air pollution work, terms such as stagnation, ventilation, and recirculation have come to be used to indicate special types of flow conditions that produce important effects on the dispersion of air pollutants. Stagnations are events where atmospheric flows decrease in speed, or stop altogether, allowing pollutants to build up in stagnant air in the vicinity of the pollutant sources. Ventilations, on the other hand, are events in which a confined polluted air mass is driven away and replaced by fresh air. Finally, a recirculation is an event in which polluted air is initially carried away from the source region but later returns to produce a high pollution episode. The three terms, when used in air pollution work, are often used in a general sense, but rarely are defined mathematically to allow a numerical evaluation of the flow character. In the present work we develop mathematical definitions of these terms by focusing directly on the relevant atmospheric transport conditions, irrespective of pollution levels. The mathematical definitions of several single- station integral quantities representative of stagnation, ventilation, and recirculation are described, and the approach is applied to a wind data et from a radar profiler at Page, Arizona.
Date:
September 1, 1992
Creator:
Allwine, K. J. & Whiteman, C. D.
Object Type:
Article
System:
The UNT Digital Library
Single-station integral measures of atmospheric stagnation, ventilation, and recirculation
In air pollution work, terms such as stagnation, ventilation, and recirculation have come to be used to indicate special types of flow conditions that produce important effects on the dispersion of air pollutants. Stagnations are events where atmospheric flows decrease in speed, or stop altogether, allowing pollutants to build up in stagnant air in the vicinity of the pollutant sources. Ventilations, on the other hand, are events in which a confined polluted air mass is driven away and replaced by fresh air. Finally, a recirculation is an event in which polluted air is initially carried away from the source region but later returns to produce a high pollution episode. The three terms, when used in air pollution work, are often used in a general sense, but rarely are defined mathematically to allow a numerical evaluation of the flow character. In the present work we develop mathematical definitions of these terms by focusing directly on the relevant atmospheric transport conditions, irrespective of pollution levels. The mathematical definitions of several single- station integral quantities representative of stagnation, ventilation, and recirculation are described, and the approach is applied to a wind data et from a radar profiler at Page, Arizona.
Date:
September 1, 1992
Creator:
Allwine, K. J. & Whiteman, C. D.
Object Type:
Article
System:
The UNT Digital Library
Southwest Retort, Volume 46, Number 1, September 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:
September 1992
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library