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Characterizing the altered zone at Yucca Mountain: The beginning of a testing strategy

Description: The concept of a disturbed zone surrounding the mined openings of a potential geologic repository for high-level radioactive waste was introduced by the US Nuclear Regulatory Commission (NRC) as a region to be excluded for determining groundwater travel time to the accessible environment, but to be included for determining the impact of underground construction and radioactive decay heat on groundwater movement and radionuclide transport for total system performance analysis. This paper explore… more
Date: January 8, 1992
Creator: Chesnut, D.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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[Reaction Dynamics of High-Temperature Systems]. Final Report

Description: Objective was to study reactions at superthermal collision energies using a fast neutral beam produced by photodetachment. Systems under initial study included basic oxygen-hydrogen reactions. Although progress was made on each stage of the experiment, conflicting requirements (maximizing photodetachment efficiency and maximizing transmission through reaction zone) precluded ultimate success. Parameters described refer to the model system O+H{sub 2}{r_arrow}OH+H. 2 figs.
Date: March 8, 1992
Creator: Graff, M. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flowsheet report for baseline actinide blanket processing for accelerator transmutation of waste

Description: We provide a flowsheet analysis of the chemical processing of actinide and fission product materials form the actinide blanket of an accelerator-based transmutation concept. An initial liquid ion exchange step is employed to recover unburned plutonium and neptunium, so that it can be returned quickly to the transmitter. The remaining materials, consisting of fission products and trivalent actinides (americium, curium), is processed after a cooling period. A reverse Talspeak process is employed … more
Date: April 8, 1992
Creator: Walker, R.B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flowsheet Report for Baseline Actinide Blanket Processing for Accelerator Transmutation of Waste

Description: We provide a flowsheet analysis of the chemical processing of actinide and fission product materials form the actinide blanket of an accelerator-based transmutation concept. An initial liquid ion exchange step is employed to recover unburned plutonium and neptunium, so that it can be returned quickly to the transmitter. The remaining materials, consisting of fission products and trivalent actinides (americium, curium), is processed after a cooling period. A reverse Talspeak process is employed … more
Date: April 8, 1992
Creator: Walker, Robert B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Preliminary study of insertion device effect on dynamic aperture using RACETRACK

Description: We studied the effects of an insertion device (ID) on the dynamic aperture using the new version of RACETRACK. We found that the nonlinear effect of the ID is the dominant effect on the dynamic aperture reduction compared to the other multipole errors which exist in the otherwise ideal lattice. The previous study of dynamic aperture was based on the assumption that the effect of the fast oscillating terms in L. Smith`s Hamiltonian is small, and hence can be neglected in the simulation. The rema… more
Date: May 8, 1992
Creator: Chae, Yong-chul & Crosbie, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Exact calculations of phase and membrane equilibria for complex fluids by Monte Carlo simulation

Description: Objective is to develop molecular simulation techniques for phase equilibria in complex systems. The Gibbs ensemble Monte Carlo method was extended to obtain phase diagrams for highly asymmetric and ionic fluids. The modified Widom test particle technique was developed for chemical potentials of long polymeric molecules, and preliminary calculations of phase behavior of simple model homopolymers were performed.
Date: June 8, 1992
Creator: Panagiotopoulos, A.Z.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Exact calculations of phase and membrane equilibria for complex fluids by Monte Carlo simulation. Progress report

Description: Objective is to develop molecular simulation techniques for phase equilibria in complex systems. The Gibbs ensemble Monte Carlo method was extended to obtain phase diagrams for highly asymmetric and ionic fluids. The modified Widom test particle technique was developed for chemical potentials of long polymeric molecules, and preliminary calculations of phase behavior of simple model homopolymers were performed.
Date: June 8, 1992
Creator: Panagiotopoulos, A. Z.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Scoping Meeting Summary , Pahoa, Hawai'i, March 1992, 2 PM Session

Description: The meeting began with presentations by the facilitator, Mr. Spiegel, and the representative from DOE, Dr. Lewis. The facilitator introduced those on the podium. He then described the general structure of the meeting and its purpose: to hear the issues and concerns of those present regarding the proposed Hawaiian Geothermal Project. He described his role as assuring the impartiality and fairness of the meeting. Dr. Lewis of DOE further defined the scope of the project, introduced those of the E… more
Date: June 8, 1992
Creator: Quinby-Hunt, Mary S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion of aluminum cladding under optimized water conditions

Description: Experience at SRS, ORNL, BNL, and Georgia Institute of Technology involving irradiated aluminum clad fuel and target elements, as well as studies of non-irradiated aluminum indicate that some types of aluminum assemblies can be kept in a continually well-deionized water atmosphere for up to 25 years without problems. SRS experience ranges from 2.75 years for the L-1.1 charge kept in deionized D[sub 2]O[sup 1] to greater than 10 years for assemblies stored in the Receiving Basin for Off-site Fue… more
Date: July 8, 1992
Creator: Gibbs, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion of aluminum cladding under optimized water conditions

Description: Experience at SRS, ORNL, BNL, and Georgia Institute of Technology involving irradiated aluminum clad fuel and target elements, as well as studies of non-irradiated aluminum indicate that some types of aluminum assemblies can be kept in a continually well-deionized water atmosphere for up to 25 years without problems. SRS experience ranges from 2.75 years for the L-1.1 charge kept in deionized D{sub 2}O{sup 1} to greater than 10 years for assemblies stored in the Receiving Basin for Off-site Fue… more
Date: July 8, 1992
Creator: Gibbs, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Separation by Ceramic Membranes in Coal Gasification

Description: Project objectives are to develop hydrogen-permselective ceramic membranes for water-gas shift membrane-reactor suitable for hydrogen production from coal gas, and to evaluate the technical and economic potential of the membrane-reactor. Work performed during reporting period included membrane deposition and stability testing.
Date: July 8, 1992
Creator: Gavalas, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydrogen Separation by Ceramic Membranes in Coal Gasification. Quarterly Progress Report, April 1, 1992--June 30, 1992

Description: Project objectives are to develop hydrogen-permselective ceramic membranes for water-gas shift membrane-reactor suitable for hydrogen production from coal gas, and to evaluate the technical and economic potential of the membrane-reactor. Work performed during reporting period included membrane deposition and stability testing.
Date: July 8, 1992
Creator: Gavalas, G. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel approaches to the production of higher alcohols from synthesis gas

Description: ASPEN computer simulation cases involving methanol, ethanol and propanol recycle have been completed. The results indicate that the yield of higher alcohols increased slightly until the quantity of recycled lower alcohol equaled the amount of that alcohol produced (i.e. when there is no net formation of the recycled alcohol). Above this point, no change in higher alcohol yield was observed. All cases were based on a 2/1 H{sub 2}/CO feed ratio at 70 atm and 275{degree}C. ASPEN PLUS simulations o… more
Date: July 8, 1992
Creator: Roberts, G. W. & Apperson, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Novel approaches to the production of higher alcohols from synthesis gas. Quarterly technical progress report No. 6, January 1, 1992--March 31, 1992

Description: ASPEN computer simulation cases involving methanol, ethanol and propanol recycle have been completed. The results indicate that the yield of higher alcohols increased slightly until the quantity of recycled lower alcohol equaled the amount of that alcohol produced (i.e. when there is no net formation of the recycled alcohol). Above this point, no change in higher alcohol yield was observed. All cases were based on a 2/1 H{sub 2}/CO feed ratio at 70 atm and 275{degree}C. ASPEN PLUS simulations o… more
Date: July 8, 1992
Creator: Roberts, G. W. & Apperson, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reduced length design of 9.8 MHz APS/PAR accelerator cavity

Description: The Accelerator cavities in this report can be modeled as a circuit with transmission line sections and lumped elements. Two configuration of the reduced length coaxial cavities are discussed; the folded cavity and the radial line loaded gap cavity are compared with design equations. The APS PAR 9.8 MHz first harmonic cavity is designed in the two configurations and compared. Since capacitive loading in the reduced length cavities involves use of radial transmission line structure, the properti… more
Date: July 8, 1992
Creator: Kang, Y.W.; Kustom, R.L. & Bridges, J.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Variation of conductivity with temperature for the normal state of oxide superconductors

Description: Several equations have been proposed in the literature to describe the variation of resistivity with temperature {rho}(T), for the superconducting oxides. Among these, a linear variation of {rho}(T) has been accepted as a characteristic feature for these materials. These equations have been compared through least squares to experimental values of {rho}(T) for one case of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} with {delta} near 0.1. It has been found that two equations, (a) one based on an av… more
Date: July 8, 1992
Creator: Thorn, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Verification and validation of TMAP4

Description: The Tritium Migration Analysis Program MODl/CY04 (TMAP4) was written to be used in analyzing experiments and for safety calculations that involve the injection, solution, diffusion, trapping, release, and other related processes experienced by hydrogen isotopes in materials. Because of the desire to make it suitable for analyzing safety issues, it is important that TMAP4 be certified (verified and validated) at Quality Assurance Level A. This report documents the work done to achieve that certi… more
Date: July 8, 1992
Creator: Longhurst, G. R.; Harms, S. L.; Marwil, E. S. & Miller, B. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Verification and validation of TMAP4

Description: The Tritium Migration Analysis Program MODl/CY04 (TMAP4) was written to be used in analyzing experiments and for safety calculations that involve the injection, solution, diffusion, trapping, release, and other related processes experienced by hydrogen isotopes in materials. Because of the desire to make it suitable for analyzing safety issues, it is important that TMAP4 be certified (verified and validated) at Quality Assurance Level A. This report documents the work done to achieve that certi… more
Date: July 8, 1992
Creator: Longhurst, G.R.; Harms, S.L.; Marwil, E.S. & Miller, B.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Radiolabeled androgens and progestins as imaging agents for tumors of the prostate and breast

Description: We are preparing progestins and androgens, labeled with the single photon emitters technetium-99m and rhenium-186 and the positron-emitting radionuclide fluorine-18. In both cases, ligands selected have very high affinity for the respective receptor, low affinity for blood and non-specific binders and to be reasonably resistant to metabolism: The progestins will be derivatives of the potent progestins ORG2058, norgestrel, RU486, and an unusual retroprogestin and the androgens will be derivative… more
Date: August 8, 1992
Creator: Katzenellenbogen, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiolabeled androgens and progestins as imaging agents for tumors of the prostate and breast. Technical progress report, February 1, 1992--January 31, 1993

Description: We are preparing progestins and androgens, labeled with the single photon emitters technetium-99m and rhenium-186 and the positron-emitting radionuclide fluorine-18. In both cases, ligands selected have very high affinity for the respective receptor, low affinity for blood and non-specific binders and to be reasonably resistant to metabolism: The progestins will be derivatives of the potent progestins ORG2058, norgestrel, RU486, and an unusual retroprogestin and the androgens will be derivative… more
Date: August 8, 1992
Creator: Katzenellenbogen, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced, soluble hydroliquefaction and hydrotreating catalysts

Description: Present hydroliquefaction of coal suffers from required high temperatures and high hydrogen pressures. Surface confined, organometallic catalysists are effective for hydrogenation and HDN of coal model compounds such as quinoline, but not of coal itself. Purpose of this program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. The program consists of 3 major tasks: preparation of candidate HPA (heteropolyani… more
Date: September 8, 1992
Creator: Laine, R.M. (Michigan Univ., Ann Arbor, MI (United States). Dept. of Materials Science and Engineering) & Stoebe, T. (Washington Univ., Seattle, WA (United States). Dept. of Materials Science and Engineering)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced, soluble hydroliquefaction and hydrotreating catalysts. Quarterly report No. 8, April 2, 1991--June 31, 1992

Description: Present hydroliquefaction of coal suffers from required high temperatures and high hydrogen pressures. Surface confined, organometallic catalysists are effective for hydrogenation and HDN of coal model compounds such as quinoline, but not of coal itself. Purpose of this program is to develop soluble analogs of surface confined catalysts that can be impregnated directly into the coal structure at low temperatures. The program consists of 3 major tasks: preparation of candidate HPA (heteropolyani… more
Date: September 8, 1992
Creator: Laine, R. M. & Stoebe, T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bounds on the Mixing of the Down-Type Quarks With Vector-Like Singlet Quarks

Description: We derive bounds on the mixing of the standard charge -1/3 quarks with vector-like isosinglet quarks, as they exist in some extensions of the standard model. We make no assumptions about the unitarity or any other features of the mixing matrix. We find that the mixing is quite constrained: we are able to set bounds on all the extra parameters which arise in the mixing matrix (CKM matrix), except on two phases. The assumption that there exists only one exotic quark leads to some extra relationsh… more
Date: September 8, 1992
Creator: Lavoura, L. & Silva, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Bounds on the Mixing of the Down-Type Quarks With Vector-Like Singlet Quarks

Description: We derive bounds on the mixing of the standard charge -1/3 quarks with vector-like isosinglet quarks, as they exist in some extensions of the standard model. We make no assumptions about the unitarity or any other features of the mixing matrix. We find that the mixing is quite constrained: we are able to set bounds on all the extra parameters which arise in the mixing matrix (CKM matrix), except on two phases. The assumption that there exists only one exotic quark leads to some extra relationsh… more
Date: September 8, 1992
Creator: Lavoura, L. & Silva, J. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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