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LAr Dewar Coil Feed Frame Pipe Analysis (Structural Analysis of General Structures, SAGS)

Description: This frame pipe analysis addresses the D0 LAr dewar Condenser tube (coil) feed pipe thermal contraction stresses and moments. The configuration is shown in PEI drawing C-32545, Rev 0, and the parameters detailed in the letter of November 20, 1989, located in appendix A. Note that all other thermal considerations for these condensing coils have been made in D0 EN 3740.512-234. The conclusion of this report is the feed lines, previously deemed appropriate without detailed analysis, have been demo… more
Date: January 31, 1990
Creator: Parker, A.W.
Partner: UNT Libraries Government Documents Department
open access

The photoexcited triplet state of sapphyrin dication: Unusual spin alignment in monomers and spin delocalization in dimers

Description: Sapphyrin (Sap) and its stable dicationic form, Sap{sup 2+}, originally prepared by Woodawrd and Johnson, are large porphyrin-like systems which exhibit unique photophysical and photochemical properties. We report on the triplet diode detection, by time-resolved CW EPR, of (Sap{sup 2+}){sup T} randomly oriented in toluene (as monomers), ethanol (as dimers), and partially oriented in a nematic liquid crystal (as monomers). The substantial reduction of both zero-field splitting (ZFS) parameters (… more
Date: January 31, 1990
Creator: Levanon, H.; Michaeli, S.; Regev, A.; Galili, T.; Cyr, M. & Sessler, J. L.
Partner: UNT Libraries Government Documents Department
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D-Zero Collider Detector CC Cooldown/Fill and Overview

Description: The cooldown will be immediately preceded by two trial pump downs; the insulating vacuum and the detector volume. The insulating vacuum must be established to a level below 10{sup -4} MM Hg to minimize the conduction heat load. The detector, aka cryostat, vacuum pump down must be able to reproduce the ultimate and rate-of-rise (ROR) values demonstrated in the clean room. It is anticipated, barring newly generated problems, it will take a few days to accomplish both of these tasks once the const… more
Date: January 31, 1990
Creator: Mulholland, G.T.
Partner: UNT Libraries Government Documents Department
open access

Reactor tank UT acceptance criteria

Description: The SRS reactor tanks are constructed of type 304 stainless steel, with 0.5 inch thick walls. An ultrasonic (UT) in-service inspection program has been developed for examination of these tanks, in accordance with the ISI Plan for the Savannah River Production Reactors Process Water System (DPSTM-88-100-1). Prior to initiation of these inspections, criteria for the disposition of any indications that might be found are required. A working group has been formed to review available information on … more
Date: January 30, 1990
Creator: Daugherty, W.L.
Partner: UNT Libraries Government Documents Department
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Reactor tank UT acceptance criteria. Revision 2

Description: The SRS reactor tanks are constructed of type 304 stainless steel, with 0.5 inch thick walls. An ultrasonic (UT) in-service inspection program has been developed for examination of these tanks, in accordance with the ISI Plan for the Savannah River Production Reactors Process Water System (DPSTM-88-100-1). Prior to initiation of these inspections, criteria for the disposition of any indications that might be found are required. A working group has been formed to review available information on … more
Date: January 30, 1990
Creator: Daugherty, W. L.
Partner: UNT Libraries Government Documents Department
open access

A nonlinear oscillator

Description: A nonlinear oscillator design was imported from Cornell modified, and built for the purpose of simulating the chaotic states of a forced pendulum. Similar circuits have been investigated in the recent nonlinear explosion.
Date: January 27, 1990
Creator: Tomlin, R.
Partner: UNT Libraries Government Documents Department
open access

HFBR: Review of the technical specifications against the FSAR

Description: The purpose of this review is to determine the adequacy of the High Flux Beam Reactor (HFBR) Technical Specifications for 40 MW operation by comparison with the HFBR Final Safety Analysis Report, particularly the accident analyses chapter. Specifically, the Technical Specifications were compared against the Design Basis Accident (DBA) Analyses presented in the Addendum to the HFBR FSAR for 60 MW Operation. The 60 MW DBA analyses was used since it is more current and complete than the analyses p… more
Date: January 25, 1990
Creator: Rao, D. V.; Ross, S. B.; Claiborne, E. R.; Darby, J. L. & Clark, R. A.
Partner: UNT Libraries Government Documents Department
open access

(Fourth international conference on fusion reactor materials)

Description: This report summarizes the International Conference on Fusion Reactor Materials (ICFRM-4) which was held December 4--9, 1989, in Kyoto, Japan, as well as the results of several workshops, planning meetings, and laboratory visits made by the travelers. The ICFRM-4 is the major forum to present and exchange information on materials research and development in support of the world's fusion development efforts. About 360 papers were presented by the 347 conference attendees. Highlights of the confe… more
Date: January 24, 1990
Creator: Bloom, E. E.
Partner: UNT Libraries Government Documents Department
open access

Applications of Micellar Enzymology to Clean Coal Technology

Description: This project is designed to develop methods for pre-combustion coal remediation by implementing recent advances in enzyme biochemistry. The novel approach of this study is incorporation of hydrophilic oxidative enzymes in reverse micelles in an organic solvent. Enzymes from commercial sources or microbial extracts are being investigated for their capacity to remove organic sulfur from coal by oxidation of the sulfur groups, splitting of C-S bonds and loss of sulfur as sulfuric acid Dibenzothiop… more
Date: January 20, 1990
Creator: Walsh, C. T.
Partner: UNT Libraries Government Documents Department
open access

Applications of Micellar Enzymology to Clean Coal Technology. First Quarterly Report

Description: This project is designed to develop methods for pre-combustion coal remediation by implementing recent advances in enzyme biochemistry. The novel approach of this study is incorporation of hydrophilic oxidative enzymes in reverse micelles in an organic solvent. Enzymes from commercial sources or microbial extracts are being investigated for their capacity to remove organic sulfur from coal by oxidation of the sulfur groups, splitting of C-S bonds and loss of sulfur as sulfuric acid Dibenzothiop… more
Date: January 20, 1990
Creator: Walsh, C. T.
Partner: UNT Libraries Government Documents Department
open access

Establishment and maintenance of a coal sample bank and data base. [Including sample preparation without oxidation]

Description: Retrieval of 5-lb splits of -1/4 inch coal from designated 30-gallon drums was completed. Preparation and analysis of these samples for the second yearly quality evaluation is in progress. After consultation with the DOE Project Manager, two replacement samples were collected. These are the first of the series which will be stored in foil laminate bags. Both of these samples were placed in 30 gallon steel drums lined with polyethylene bags at the mine site. They were equipped with lid gaskets m… more
Date: January 19, 1990
Creator: Davis, A.
Partner: UNT Libraries Government Documents Department
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Establishment and maintenance of a coal sample bank and data base. [Quarterly] project status report, October 9, 1989--January 8, 1990

Description: Retrieval of 5-lb splits of -1/4 inch coal from designated 30-gallon drums was completed. Preparation and analysis of these samples for the second yearly quality evaluation is in progress. After consultation with the DOE Project Manager, two replacement samples were collected. These are the first of the series which will be stored in foil laminate bags. Both of these samples were placed in 30 gallon steel drums lined with polyethylene bags at the mine site. They were equipped with lid gaskets m… more
Date: January 19, 1990
Creator: Davis, A.
Partner: UNT Libraries Government Documents Department
open access

Short wavelength chemical laser demonstration based on N({sup 2}D) chemistry. Final technical report

Description: The overall goal of this project was to demonstrate lasing on the NCl(b{yields}x) transition at 665 nm. Our scheme is based on chemical production of excited nitrogen atoms in the {sup 2}D metastable state and subsequent reaction of N({sup 2}D) with Cl{sub 2} to produce NCl(b). Our intermediate objectives were: (1) demonstrate chemical generation of N({sup 2}D), (2) identify and measure rate constants important to the chemical scheme, and (3) demonstrate production of NCl(b) from the N({sup 2}D… more
Date: January 19, 1990
Partner: UNT Libraries Government Documents Department
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Theoretical approach for enhanced mass transfer effects in-duct flue gas desulfurization processes

Description: Bench-scale and pilot-scale experiments have been conducted to measure the mass transfer and kinetic rates at simulated duct injection conditions. Section 2 describes the tank reactor test results. The stirred tank reactor was used to study absorption of SO{sub 2} into saturated Ca(OH){sub 2} solutions with varied ionic strengths. The results of current experiments were compared with previous tests using saturated Ca(OH){sub 2} solution and 0.1 M CaCl{sub 2}. Section 3 summarizes the status of … more
Date: January 18, 1990
Partner: UNT Libraries Government Documents Department
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Control of pyrite surface chemistry in physical coal cleaning

Description: To better understand the flotation behavior of coal pyrite, studies have been initiated to characterize the floatability of coal pyrite and mineral pyrite. The hydrophobicity of coal material pyrite was examined over a range of pH and oxidation times. The results indicate that surface oxidation plays an important role in coal and mineral pyrite hydrophobicity. The hydrophobicity of mineral pyrite decreases with increasing oxidation time (20 min. to 5 hr.) and increasing pH (pH 4.6 to 9.2), with… more
Date: January 17, 1990
Creator: Luttrell, G. H.; Yoon, R. H.; Zachwieja, J. & Lagno, M.
Partner: UNT Libraries Government Documents Department
open access

Control of pyrite surface chemistry in physical coal cleaning. First quarterly progress report, September 1, 1989--November 30, 1989

Description: To better understand the flotation behavior of coal pyrite, studies have been initiated to characterize the floatability of coal pyrite and mineral pyrite. The hydrophobicity of coal material pyrite was examined over a range of pH and oxidation times. The results indicate that surface oxidation plays an important role in coal and mineral pyrite hydrophobicity. The hydrophobicity of mineral pyrite decreases with increasing oxidation time (20 min. to 5 hr.) and increasing pH (pH 4.6 to 9.2), with… more
Date: January 17, 1990
Creator: Luttrell, G. H.; Yoon, R. H.; Zachwieja, J. & Lagno, M.
Partner: UNT Libraries Government Documents Department
open access

Thermally Induced Structural Changes in Coal Combustion

Description: The effect of particle shape on char burnout is investigated in the limit of shrinking core combustion. As a first step, the particle temperature is assumed to proceed in the shrinking core regime and under conditions of negligible Stefan flow. The problem then reduces to calculating the oxygen concentration field around a non-spherical particle with the oxidation reaction taking place on the external surface. This problem has been addressed by an analytical technique and a numerical technique.… more
Date: January 17, 1990
Creator: Gavalas, G. R. & Flagan, R. C.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: January 15, 1990
Creator: Bukur, D.B. & Patel, S.A.
Partner: UNT Libraries Government Documents Department
open access

Development of improved iron Fischer-Tropsch catalysts. Quarterly technical progress report, 1 October 1989--31 December 1989

Description: The objective of proposed research is development of catalysts with enhanced slurry phase activity and better selectivity to fuel range products, through a more detailed understanding and systematic studies of the effects of pretreatment procedures and promoters/binders (silica) on catalyst performance.
Date: January 15, 1990
Creator: Bukur, D. B. & Patel, S. A.
Partner: UNT Libraries Government Documents Department
open access

Photoinduced electron transfer reaction in zeolite cages

Description: Research continued on photochemically induced electron transfer in zeolites. Reactions and synthesis of Ru(bpy){sub 3}{sup 2+} are discussed. Also, the intercalation properties of LiAl{sub 2}(OH){sub 6}{sup +}-X{sup {minus}} are being pursued. 5 figs. (CBS)
Date: January 15, 1990
Creator: Dutta, P. K.
Partner: UNT Libraries Government Documents Department
open access

Future microprocessor farms: Offline and online

Description: Microprocessor farms have been successfully employed in high energy physics for both offline analysis and online triggers. As the experiments continue to grow in size, so do the demands for processing power. The preliminary indications are that the large collider experiments will require at least a million VAX-11/780 equivalents of processing power for online trigger decisions and offline event reconstruction. This paper examines the current technology trends and projects the processing power t… more
Date: January 12, 1990
Creator: Areti, H.
Partner: UNT Libraries Government Documents Department
open access

Liquid Argon Maximm Convective Heat Flux vs. Liquid Depth

Description: In order to help answer questions about the magnitude of heat flux to the liquid argon in a liquid argon calorimeter which could cause boiling (bubbles), calculations estimating the heat flux which can be removed by free convection were made in February, 1988. These calculations are intended to be an estimate of the heat flux above which boiling would occur. No formal writeup was made of these calculations, although the graph dated 3 Feb 88 and revised (adding low-velocity forced convection lin… more
Date: January 12, 1990
Creator: Peterson, T.
Partner: UNT Libraries Government Documents Department
open access

Mass storage for microprocessor farms

Description: Experiments in high energy physics require high density and high speed mass storage. Mass storage is needed for data logging during the online data acquisition, data retrieval and storage during the event reconstruction and data manipulation during the physics analysis. This paper examines the storage and speed requirements at the first two stages of the experiments and suggests a possible starting point to deal with the problem. 3 refs., 3 figs.
Date: January 12, 1990
Creator: Areti, H.
Partner: UNT Libraries Government Documents Department
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