UNT Libraries Government Documents Department - 34 Matching Results

Search Results

Results: 1 - 24 next
open access

Parallel Programming with PCN. Revision 1

Description: PCN is a system for developing and executing parallel programs. It comprises a high-level programming language, tools for developing and debugging programs in this language, and interfaces to Fortran and C that allow the reuse of existing code in multilingual parallel programs. Programs developed using PCN are portable across many different workstations, networks, and parallel computers. This document provides all the information required to develop parallel programs with the PCN programming sy… more
Date: December 1991
Creator: Foster, Ian & Tuecke, Steven
Item Type: Refine your search to only Report
open access

Parametric Effects on Glass Reaction in the Unsaturated Test Method

Description: The Unsaturated Test Method has been applied to study glass reaction under conditions that may be present at the potential Yucca Mountain site, currently under evaluation for storage of reprocessed high-level nuclear waste. The results from five separate sets of parametric experiments are presented wherein test parameters ranging from water contact volume to sensitization of metal in contact with the glass were examined. The most significant effect was observed when the volume of water, as cont… more
Date: December 1991
Creator: Woodland, Alan B.; Bates, John K. & Gerding, Thomas J.
Item Type: Refine your search to only Report
open access

Radiolytic Generation of Gases from Synthetic Waste, Annual Report: 1991

Description: Annual report of an Argonne National Laboratory Chemistry Division program on radiolytic generation of gases from synthetic waste. This report includes results of studies on simulated waste solutions to measure the presence and absence of organic chelators and their products.
Date: December 1991
Creator: Meisel, Dan; Diamond, H.; Horwitz, E. P.; Jonah, Charles D.; Matheson, Max S.; Sauer, M. C., Jr. et al.
Item Type: Refine your search to only Report
open access

Automated Insertion of Sequences into a Ribosomal RNA Alignment: an Application of Computational Linguistics in Molecular Biology

Description: This thesis involved the construction of (1) a grammar that incorporates knowledge on base invariancy and secondary structure in a molecule and (2) a parser engine that uses the grammar to position bases into the structural subunits of the molecule. These concepts were combined with a novel pinning technique to form a tool that semi-automates insertion of a new species into the alignment for the 16S rRNA molecule (a component of the ribosome) maintained by Dr. Carl Woese`s group at the Universi… more
Date: November 1991
Creator: Taylor, Ronald C.
Item Type: Refine your search to only Report
open access

Proceedings of the Workshop on Compilation of (Symbolic) Languages for Parallel Computers : Held October 31 - November 1, 1991, San Diego, CA

Description: This report comprises the abstracts and papers for the talks presented at the Workshop on Compilation of (Symbolic) Languages for Parallel Computers, held October 31 - November 1, 1991, in San Diego. These unrefereed contributions were provided by the participants for the purpose of this workshop; many of them will be published elsewhere in peer-reviewed conferences and publications.
Date: November 1991
Creator: Foster, Ian & Tick, Evan
Item Type: Refine your search to only Report
open access

Radiation Chemistry of Synthetic Waste

Description: The yield of hydrogen from radiolysis of aqueous solutions is substantially reduced by the presence of nitrate and nitrite in the waste solutions. Nitrate is more efficient in scavenging the precursors to hydrogen than is nitrite, therefore, the latter should be maintained at higher levels if minimization of radiolytic gas production is required. Nitrate is the major scavenger for e(sub aq)(sup (minus)) and nitrite is the major scavenger for H atoms. At the concentration levels of the waste sol… more
Date: November 1991
Creator: Meisel, Dan; Diamond, H.; Horwitz, E. P.; Jonah, Charles D.; Matheson, Max S.; Sauer, M. C. et al.
Item Type: Refine your search to only Report
open access

Practical Superconductor Development for Electrical Power Applications, Annual Report: 1991

Description: Annual report for the superconductor program at Argonne National Laboratory discussing the group's activities and research. This report describes technical progress of research and development efforts aimed at producing superconducting components based on the Y-Ba-Cu, BI-Sr-Ca-Cu, Bi-Pb-Sr-Ca-Cu, and TI-Ba-Ca-Cu oxide systems including: synthesis and heat treatment of high-Te superconductors, formation of monolithic and composite wires and tapes, superconductor/metal connectors, characterizati… more
Date: October 1991
Creator: Argonne National Laboratory. Materials and Components Technology Division.
Item Type: Refine your search to only Report
open access

Parallel Programming with PCN

Description: PCN is a system for developing and executing parallel programs. It comprises a high-level programming language, a set of tools for developing and debugging programs in this language, and interfaces to Fortran and C that allow the reuse of existing code in multilingual parallel programs. Programs developed using PCN are portable across many different workstations, networks, and parallel computers. This document provides all the information required to develop parallel programs with the PCN progr… more
Date: September 1991
Creator: Foster, Ian & Tuecke, Steven
Item Type: Refine your search to only Report
open access

Three-Dimensional Nuclear Magnetic Resonance Imaging of Green-State Ceramics

Description: Objective is the development of nuclear magnetic resonance imaging techniques and technology applicable to the nondestructive characterization of green-state ceramics. To this end, a three-dimensional (3-D) NMR imaging technique has been developed, based on a back-projection acquisition protocol in combination with image reconstruction techniques that are based on 3-D Radon transform inversion. The method incorporates the experimental flexibility to overcome many of the difficulties associated … more
Date: September 1991
Creator: Dieckman, S. L.
Item Type: Refine your search to only Report
open access

Weight Losses of Marble and Limestone Briquettes Exposed to Outdoor Environments in the Eastern United States : Results of Exposures, 1984-1988

Description: Gravimetric changes in marble and limestone briquettes exposed to outdoor environment at five sites in the eastern United States have been monitored since 1984. An earlier report describes procedures and results obtained in 1984--1988. This report presents the results of the exposure period 1984--1988 and reviews and summarizes those of prior years. A linear relationship was found between cumulative gravimetric losses and exposure period or rain depth. These losses resulted in an average recess… more
Date: September 1991
Creator: Reimann, K. J.
Item Type: Refine your search to only Report
open access

The Application of Automated Reasoning to Proof Translation and to Finding Proofs with Specified Properties: a Case Study in Many-Valued Sentential Calculus

Description: In both mathematics and logic, many theorems exist such that each can be proved in entirely different ways. For a striking example, there exist theorems from group theory that can be proved by relying solely on equality and (from the viewpoint of automated reasoning) the use of paramodulation, but can also be proved in a notation in which equality is totally absent and the inference rule is condensed detachment (captured with a single clause and the rule hyper-resolution). A study of such examp… more
Date: August 1991
Creator: Wos, Larry & McCune, William W.
Item Type: Refine your search to only Report
open access

COMMIX-PPC. a Three-Dimensional Transient Multicomponent Computer Program for Analyzing Performance of Power Plant Condensers

Description: The COMMIX-PPC computer program is an extended and improved version of earlier COMMIX codes and is specifically designed for evaluating the thermal performance of power plant condensers. The COMMIX codes are general-purpose computer programs for the analysis of fluid flow and heat transfer in complex industrial systems. In COMMIX-PPC, two major features have been added to previously published COMMIX codes. One feature is the incorporation of one-dimensional conservation of mass, momentum, and e… more
Date: August 1991
Creator: Chien, T. H.; Domanus, H. M. & Sha, William T.
Item Type: Refine your search to only Report
open access

Research in Mathematics and Computer Science at Argonne : September 1989 - February 1991

Description: This report reviews the research activities in the Mathematics and Computer Science Division at Argonne National Laboratory for the period September 1989 through February 1991. The body of the report gives a brief look at the MCS staff and the research facilities and then discusses the diverse research projects carried out in the division. Projects funded by non-DOE sources are also discussed, and new technology transfer activities are described. Further information on staff, visitors, workshop… more
Date: August 1991
Creator: Pieper, Gail W.
Item Type: Refine your search to only Report
open access

Argonne National Laboratory-East Site Environmental Report for Calendar Year

Description: This report discusses the results of the environmental protection program at Argonne National Laboratory-East (ANL) for 1990. To evaluate the effects of ANL operations on the environment, samples of environmental media collected on the site, at the site boundary, and off the ANL site were analyzed and compared to applicable guidelines and standards.
Date: July 1991
Creator: Golchert, N. W.; Duffy, T. L. & Moos, L. P.
Item Type: Refine your search to only Report
open access

Chaotic Dynamics of Loosely Supported Tubes in Crossflow

Description: By means of the unsteady-flow theory and a bilinear mathematical model, a theoretical study was conducted of the chaotic dynamics associated with the fluid-elastic instability of loosely supported tubes. Calculations were performed for the RMS of tube displacement, bifurcation diagram, phase portrait, power spectral density, and Poincare map. Analytical results show the existence of chaotic, quasi-periodic, and periodic regions when flow velocity exceeds a threshold value.
Date: July 1991
Creator: Cai, Y. & Chen, Shoei-Sheng
Item Type: Refine your search to only Report
open access

COMMIX-1AR/P. a Three-Dimensional Transient Single-Phase Computer Program for Thermal Hydraulic Analysis of Single and Multicomponent Systems

Description: The COMMIX-1AR/P computer code is designed for analyzing the steady-state and transient aspects of single-phase fluid flow and heat transfer in three spatial dimensions. This version is an extension of the modeling in COMMIX-1A to include multiple fluids in physically separate regions of the computational domain, modeling descriptions for pumps, radiation heat transfer between surfaces of the solids which are embedded in or surround the fluid, a k-{var epsilon} model for fluid turbulence, and i… more
Date: July 1991
Creator: Blomquist, R. A.; Garner, P. L. & Gelbard, Ely M.
Item Type: Refine your search to only Report
open access

Electronic Transport Properties in Copper Oxides

Description: Oxidation of copper and electronic transport in thermally grown large-grain poly-crystals of non-stoichiometric copper oxides were studied at elevated temperatures. Thermogravimetric copper oxidation was studied in air and oxygen at temperatures between 350 and 100 C. From the temperature-dependence of oxidation rates, three different processes can be identified for the oxidation of copper: bulk diffusion, grain-boundary diffusion, and surface control with whisker growth; these occur at high, i… more
Date: July 1991
Creator: Park, J.-H. & Natesan, K.
Item Type: Refine your search to only Report
open access

Leaching Action of EJ-13 Water on Unirradiated UO₂ Surfaces under Unsaturated Conditions at 90 C : Interim Report

Description: A set of experiments, based on the application of the Unsaturated Test method to the reaction of uranium dioxide with EJ-13 water, has been conducted over a period of 182.5 weeks. One half of the experiments have been terminated, while one half are still ongoing. Solutions that have dripped from uranium dioxide specimens have been analyzed for all experiments, while the reacted uranium dioxide surfaces have been examined for only the terminated experiments. A pulse of uranium release from the u… more
Date: July 1991
Creator: Wronkiewicz, D. J.; Bates, John K.; Gerding, Thomas J.; Veleckis, Ewald; Tani, B. & Hoh, J. C.
Item Type: Refine your search to only Report
open access

Chemical Alteration of Limestone and Marble Samples Exposed to Acid Rain and Weathering in the Eastern United States, 1984-1988

Description: In a long-term program that began in 1984, limestone and marble briquettes have been exposed to both anthropogenic acid deposition and natural weathering at four field sites in the eastern United States. Similar tests began at an Ohio site in 1986. Effects of exposure on the briquettes and other materials at the sites are evaluated periodically by several federal agencies cooperating in the National Acid Precipitation Assessment Program (NAPAP). Wet chemical analysis was used to detect sulfates… more
Date: June 1991
Creator: Reimann, K. J.
Item Type: Refine your search to only Report
open access

Activities and Operations of Argonne's Advanced Computing Research Facility : February 1990 through April 1991

Description: This report reviews the activities and operations of the Advanced Computing Research Facility (ACRF) from February 1990 through April 1991. The ACRF is operated by the Mathematics and Computer Science Division at Argonne National Laboratory. The facility's principal objective is to foster research in parallel computing. Toward this objective, the ACRF operates experimental advanced computers, supports investigations in parallel computing, and sponsors technology transfer efforts to industry and… more
Date: May 1991
Creator: Pieper, Gail W.
Item Type: Refine your search to only Report
open access

Annual Technical Report

Description: Highlights of the Chemical Technology Division's activities during 1990, including electrochemical technology and advanced batteries and fuel cells, technology for coal-fired magnetohydrodynamics and fluidized-bed combustion, methods for recovery of energy from municipal waste, and techniques for treatment of hazardous organic waste, the reaction of nuclear waste glass and spent fuel under conditions expected for a high-level waste repository.
Date: May 1991
Creator: Argonne National Laboratory. Chemical Technology Division.
Item Type: Refine your search to only Report
Back to Top of Screen