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Modeling node bandwidth limits and their effects on vector combining algorithms

Description: Each node in a message-passing multicomputer typically has several communication links. However, the maximum aggregate communication speed of a node is often less than the sum of its individual link speeds. Such computers are called node bandwidth limited (NBL). The NBL constraint is important when choosing algorithms because it can change the relative performance of different algorithms that accomplish the same task. This paper introduces a model of communication performance for NBL computers … more
Date: January 13, 1992
Creator: Littlefield, R.J.
Partner: UNT Libraries Government Documents Department
open access

Molecular biological enhancement of coal biodesulfurization

Description: The objective of this project is to produce one or more microorganisms capable of the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: (1) clone and characterize the genes encoding the enzymes of the 4S'' pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; (2) return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; (3) transfer this pathway into a … more
Date: March 13, 1992
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle Jr., J. D.; Baker, B.; Palmer, D. T.; Traunero, C. G. et al.
Partner: UNT Libraries Government Documents Department
open access

DWPF PCCS version 2. 0 test case

Description: To verify the operation of the Product Composition Control System (PCCS), a test case specific to DWPF operation was developed. The values and parameters necessary to demonstrate proper DWPF product composition control have been determined and are presented in this paper. If this control information (i.e., for transfers and analyses) is entered into the PCCS as illustrated in this paper, and the results obtained correspond to the independently-generated results, it can safely be said that the P… more
Date: August 13, 1992
Creator: Brown, K.G. & Pickett, M.A.
Partner: UNT Libraries Government Documents Department
open access

Scaling of gain with energy spread and energy in the PEP FEL

Description: The Sag Harbor paper on the PEP FEL discusses the scaling of various FEL parameters with energy spread {sigma}{sub {var epsilon}}. I will repeat some of this material here and then examine the benefit of increasing the energy spread. How much energy spread can be achieved with damping wigglers is the next topic. Finally, I consider the dependence of gain and saturation length on beam energy and undulator field.
Date: July 13, 1992
Creator: Fisher, A.S.
Partner: UNT Libraries Government Documents Department
open access

Mescalero Apache Tribe Monitored Retrievable Storage (MRS)

Description: The Nuclear Waste Policy Act of 1982, as amended, authorizes the siting, construction and operation of a Monitored Retrievable Storage (MRS) facility. The MRS is intended to be used for the temporary storage of spent nuclear fuel from the nation's nuclear power plants beginning as early as 1998. Pursuant to the Nuclear Waste Policy Act, the Office of the Nuclear Waste Negotiator was created. On October 7, 1991, the Nuclear Waste Negotiator invited the governors of states and the Presidents of I… more
Date: March 13, 1992
Creator: Peso, F.
Partner: UNT Libraries Government Documents Department
open access

Ammonium generation during SRAT cycle

Description: During the IDMS noble-metal demonstration runs ammonium nitrate deposition was found in the vessel vent system of the feed preparation area. In the bench-scale experiments of studying the hydrogen generation during the sludge treatment cycle, ammonium ion production was also monitored. It was found that: During a simulation of the DWPF Cold Chemical Runs SRAT cycle no detectable amount of ammonium ions was generated when treating a non-noble-metal containing sludge simulant according to the nit… more
Date: October 13, 1992
Creator: Hsu, C.W.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Periodic Transient Beam Loading of the AGS

Description: In this note, we discuss the multi-batch bunched ;beam loading during the injection from the Booster to the AGS. The full intensity beam injection to the upgraded AGS RF system with beam phase and radial feedbacks will be studied. It is shown that a beam phase feed-back is necessary in order to guarantee a predictable beam behavior after the first batch injection, otherwise the initial phase deviation for the following batch injections cannot be controlled. However, the effectiveness of the pha… more
Date: July 13, 1992
Creator: Zhang, S. Y. & Weng, W. T.
Partner: UNT Libraries Government Documents Department
open access

Bases for pump pit requirements calculations

Description: A task team is preparing the Process Requirements for the interarea transfer pump pits at the Defense Waste Process Facility (DWPF). The team is developing requirements to prevent flammable mixtures from forming and requires values to use on the generation of various components such as benzene, hydrogen, and N20. The purpose of this memorandum is to document values to be used and to provide sample calculations using these values. There are no recommendations contained in this document.
Date: February 13, 1992
Creator: Jacobs, R.A.
Partner: UNT Libraries Government Documents Department
open access

ARDEC transition armature study. Progress report No. 3, October 1--November 30, 1991

Description: This third report covers the period October 1 to November 30, 1991. During this period the authors: (1) fabricated a test fixture for studying hybrid armature brush behavior, (2) reactivated a 140kJ, 1MA capacitor bank, (3) reactivated 25 channels digital data acquisition and reduction system and (4) concluded the use of a DNA funded railgun would serve as the most expedient means to acquire a railgun test bed. Fabrication of a plasma brush test fixture for studying the formation, evolution and… more
Date: May 13, 1992
Creator: Hawke, R. S.
Partner: UNT Libraries Government Documents Department
open access

Plutonium and uranium adsorption on monosodium titanate

Description: Adsorption of Pu and U onto monosodium titanate (MST) in alkaline salt solution was measured. Changes in MST particle size distribution do not significantly affect the loadings of actinides. Max loading of plutonium-239 is 0.68 wt% at 0.79 mg/L Pu, below the infinitely safe value of 0.80 wt%. Max loading of uranium-235 onto MST is 1.4 wt% at a concentration of 20.3 {plus_minus} 2.0 mg/L U, slightly higher than the calculated infinitely safe limit of 1.2 wt%. Experimental data indicated there is… more
Date: August 13, 1992
Creator: Hobbs, D. T. & Walker, D. D.
Partner: UNT Libraries Government Documents Department
open access

Irradiation Processing Department monthly report, June 1962

Description: This document details activities of the Irradiation Processing Department during the month of June, 1962. A general summary is included at the start of the report, after which the report is divided into the following sections: Research and Engineering Operations; Production and Reactor Operations; Facilities Engineering Operation; and NPR Project.
Date: July 13, 1992
Partner: UNT Libraries Government Documents Department
open access

Cellulose fermentation by nitrogen-fixing anaerobic bacteria

Description: In anaerobic natural environments cellulose is degraded to methane, carbon dioxide and other products by the combined activities of many diverse microorganisms. We are simulating processes occurring in natural environments by constructing biologically-defined, stable, heterogeneous bacterial communities (consortia) that we use as in vitro systems for quantitative studies of cellulose degradation under conditions of combined nitrogen deprivation. These studies include the investigation of (i) me… more
Date: December 13, 1992
Creator: Canale-Parola, E.
Partner: UNT Libraries Government Documents Department
open access

DWPF PCCS version 2.0 test case. Revision 1

Description: To verify the operation of the Product Composition Control System (PCCS), a test case specific to DWPF operation was developed. The values and parameters necessary to demonstrate proper DWPF product composition control have been determined and are presented in this paper. If this control information (i.e., for transfers and analyses) is entered into the PCCS as illustrated in this paper, and the results obtained correspond to the independently-generated results, it can safely be said that the P… more
Date: August 13, 1992
Creator: Brown, K. G. & Pickett, M. A.
Partner: UNT Libraries Government Documents Department
open access

Molecular biological enhancement of coal biodesulfurization. Eleventh quarterly technical progress report

Description: The objective of this project is to produce one or more microorganisms capable of the organic and inorganic sulfur in coal. The original specific technical objectives of the project were to: (1) clone and characterize the genes encoding the enzymes of the ``4S`` pathway (sulfoxide/sulfone/sulfonate/sulfate) for release of organic sulfur from coal; (2) return multiple copies of genes to the original host to enhance the biodesulfurization activity of that organism; (3) transfer this pathway into … more
Date: March 13, 1992
Creator: Litchfield, J. H.; Zupancic, T. J.; Kittle, J. D. Jr.; Baker, B.; Palmer, D. T.; Traunero, C. G. et al.
Partner: UNT Libraries Government Documents Department
open access

US Department of Energy investments in natural gas R&D: An analysis of the gas industry proposal

Description: The natural gas industry has proposed an increase in the DOE gas R&D budget from about $100 million to about $250 million per year for each of the next 10 years. The proposal includes four programs: natural gas supplies, fuel cells, natural gas vehicles and stationary combustion systems. This paper is a qualitative assessment of the gas industry proposal and recommends a natural gas R&D strategy for the DOE. The methodology is a conceptual framework based on an analysis of market failures and t… more
Date: April 13, 1992
Creator: Sutherland, R. J.
Partner: UNT Libraries Government Documents Department
open access

Topics on RF beam control of a synchrotron

Description: In this paper, several typical situations of longitudinal motion in synchrotron design and operation are studied. The study is based on a unified beam dynamic model of synchrotron oscillation under phase and radial feedbacks. Cases studied include frequency error, lock-in range, bunch excursion, phase manipulation, injection and field errors.
Date: July 13, 1992
Creator: Zhang, S. Y. & Weng, W. T.
Partner: UNT Libraries Government Documents Department
open access

Scaling of gain with energy spread and energy in the PEP FEL

Description: The Sag Harbor paper on the PEP FEL discusses the scaling of various FEL parameters with energy spread {sigma}{sub {var_epsilon}}. I will repeat some of this material here and then examine the benefit of increasing the energy spread. How much energy spread can be achieved with damping wigglers is the next topic. Finally, I consider the dependence of gain and saturation length on beam energy and undulator field.
Date: July 13, 1992
Creator: Fisher, A. S.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Periodic Transient Beam Loading of the AGS

Description: In this note, we discuss the multi-batch bunched ;beam loading during the injection from the Booster to the AGS. The full intensity beam injection to the upgraded AGS RF system with beam phase and radial feedbacks will be studied. It is shown that a beam phase feed-back is necessary in order to guarantee a predictable beam behavior after the first batch injection, otherwise the initial phase deviation for the following batch injections cannot be controlled. However, the effectiveness of the pha… more
Date: July 13, 1992
Creator: Zhang, S. Y. & Weng, W. T.
Partner: UNT Libraries Government Documents Department
open access

Enhancing low severity coal liquefaction reactivity using mild chemical pretreatment. Quarterly technical progress report, December 1991--February 1992

Description: In this paper, we describe results from a study in which mild chemical pretreatment of coal has been used to enhance low severity liquefaction reactivity. We have found that ambient pretreatment of eight Argonne coals using methanol and a trace amount of hydrochloric acid improves THF-soluble conversions 24.5 wt% (maf basis) for Wyodak subbituminous coal and 28.4 wt% for Beulah-Zap lignite with an average increase of 14.9 wt% for liquefaction of the eight coals at 623 K (350{degree}C) reaction … more
Date: July 13, 1992
Creator: Shams, K. G.; Miller, R. L. & Baldwin, R. M.
Partner: UNT Libraries Government Documents Department
open access

Plutonium and uranium adsorption on monosodium titanate

Description: Adsorption of Pu and U onto monosodium titanate (MST) in alkaline salt solution was measured. Changes in MST particle size distribution do not significantly affect the loadings of actinides. Max loading of plutonium-239 is 0.68 wt% at 0.79 mg/L Pu, below the infinitely safe value of 0.80 wt%. Max loading of uranium-235 onto MST is 1.4 wt% at a concentration of 20.3 [plus minus] 2.0 mg/L U, slightly higher than the calculated infinitely safe limit of 1.2 wt%. Experimental data indicated there is… more
Date: August 13, 1992
Creator: Hobbs, D. T. & Walker, D. D.
Partner: UNT Libraries Government Documents Department
open access

Characterization of SAES St198 zirconium-iron-tin alloy

Description: A waste minimization program to develop a non-oxidative stripper system based on metallic getters is being conducted. Initial development is being performed using a Zr-Fe-Sn intermetallic alloy getter procured as Stl98 from SAES Gefters/USA., Inc. This memorandum describes characterizations of physical and compositional properties of SAES Stl98. SAES Stl98 getter was supplied as very durable, cylindrical pellets made by compaction of. granules of Zr-Fe-Sn alloy up to 150 [mu]m in size. Pellet d… more
Date: October 13, 1992
Creator: Mosley, W. C.
Partner: UNT Libraries Government Documents Department
open access

Enhancing low severity coal liquefaction reactivity using mild chemical pretreatment

Description: In this paper, we describe results from a study in which mild chemical pretreatment of coal has been used to enhance low severity liquefaction reactivity. We have found that ambient pretreatment of eight Argonne coals using methanol and a trace amount of hydrochloric acid improves THF-soluble conversions 24.5 wt% (maf basis) for Wyodak subbituminous coal and 28.4 wt% for Beulah-Zap lignite with an average increase of 14.9 wt% for liquefaction of the eight coals at 623 K (350{degree}C) reaction … more
Date: July 13, 1992
Creator: Shams, K. G.; Miller, R. L. & Baldwin, R. M.
Partner: UNT Libraries Government Documents Department
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