UNT Libraries Government Documents Department - 28 Matching Results

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Bench-scale co-processing

Description: The objective of this contract is to extend and optimize UOP's single-stage slurry-catalyzed co-processing scheme. Particular emphasis is given to defining and improving Mo catalyst utilization and cost, evaluating alternative and disposable slurry-catalyst systems, and improving catalyst recycle and recovery techniques. During the previous quarter, a catalyst concentration study was completed. The study showed that the highest nondistillable conversions and liquid yields were achieved using li… more
Date: July 9, 1990
Creator: Nafis, D.A.; Gatsis, J.G.; Lea, C. & Miller, M.A.
Item Type: Refine your search to only Report
open access

Computing and data handling recent experiences at Fermilab and SLAC

Description: Computing has become evermore central to the doing of high energy physics. There are now major second and third generation experiments for which the largest single cost is computing. At the same time the availability of cheap'' computing has made possible experiments which were previously considered infeasible. The result of this trend has been an explosion of computing and computing needs. I will review here the magnitude of the problem, as seen at Fermilab and SLAC, and the present methods fo… more
Date: April 9, 1990
Creator: Cooper, P. S.
Item Type: Refine your search to only Article
open access

Defense waste processing facility (DWPF) environmental dosimetry data

Description: The original Environmental Impact Statement for the DWPF was issued in 1982. Since that time, estimated releases of radioactivity to the environment have changed because of the DWPF process. In addition, the methodology for calculating offsite doses from routine releases has changed. In anticipation of a potential supplement to the 1982 EIS, current dosimetry methodology has been used to estimate offsite doses from the current as-constructed estimate of radioactivity releases. Offsite doses hav… more
Date: April 9, 1990
Creator: Marter, W. L. & Bauer, L. R.
Item Type: Refine your search to only Report
open access

Development of a coal cleaning control system

Description: The US Department of Energy selected the Battelle-Electric Power Research Institute-Science Applications International Corporation team to evaluate and develop on-line slurry ash, percent solids, and sulfur analysis instrumentation and process control technology. The project's objectives were (1) to develop an accurate, versatile, easy to use, on-line coal slurry analyzer and (2) to develop control strategies for analysis, control, and optimization of advanced and conventional coal-cleaning pla… more
Date: March 9, 1990
Creator: Conkle, H. N.; Barnes, R. H.; Orban, J. E. & Webb, P. R.
Item Type: Refine your search to only Report
open access

Development of the electroacoustic dewatering (EAD) process for fine/ultrafine coal

Description: Battelle is undertaking engineering development of an advanced process for the dewatering of fine and ultrafine coals. The advanced process, called Electroacoustic Dewatering (EAD), capitalizes on the adaptation of synergistic effects of electric and acoustic fields to commercial coal dewatering systems, such as belt filter presses. The Battelle project for demonstrating the potential for commercial application of the EAD process for coal has the following objectives: to validate the expected t… more
Date: November 9, 1990
Creator: Kim, B. C.; Criner, C. L.; Wu, H.; Menton, R.; Senapati, N. & Chauhan, S. P.
Item Type: Refine your search to only Report
open access

The dijet invariant mass at the Tevatron Collider

Description: The differential cross section of the process p + pbar {yields} jet + jet + X as a function of the dijet invariant mass has been measured with the CDF detector at a center of mass energy of 1.8 TeV at the Tevatron Collider in Fermilab. The present analysis is based on the sample of events collected in the 1988/89 run, amounting to a total integrated luminosity of 4.2 pb{sup {minus}1}. A comparison to leading order QCD and quark compositeness predictions is presented as well as a study of the se… more
Date: May 9, 1990
Creator: Giannetti, P. (Istituto Nazionale di Fisica Nucleare, Pisa (Italy))
Item Type: Refine your search to only Article
open access

ECH by FEL and gyrotron sources on the Microwave Tokamak Experiment (MTX) tokamak

Description: The Microwave Tokamak Experiment (MTX) at LLNL is studying the physics of intense pulse ECH is a high-density tokamak plasma using a microwave FEL. Related technology development includes the FEL, a windowless quasi-optical transmission system, and other microwave components. Initial plasma experiments have been carried out at 140 GHz with single rf pulses generated using the ETA-II accelerator and the ELF wiggler. Peak power levels up to 0.2 GW and pulse durations up to 10 ns were achieved for… more
Date: August 9, 1990
Creator: Stallard, B. W.; Turner, W. C.; Allen, S. L.; Byers, J. A.; Felker, B.; Fenstermacher, M. E. et al.
Item Type: Refine your search to only Article
open access

The Effect of Chemical Additives on the Synthesis of Ethanol

Description: The objective of this research is to elucidate the role of various chemical additives on ethanol synthesis over Rh- and Ni-based catalysts. Chemical additives used for this study will include S, P, Ag, Cu, Mn, and Na which have different electronegativities. The effect of additives on the surface state of the catalysts, heat of adsorption of reactant molecules, reaction intermediates, reaction pathways, reaction kinetics, and product distributions is/will be investigated by a series of experime… more
Date: April 9, 1990
Creator: Chuang, S. S. C.
Item Type: Refine your search to only Report
open access

The Effect of Chemical Additives on the Synthesis of Ethanol. Technical Progress Report No. 9, September 16, 1989--December 15, 1989

Description: The objective of this research is to elucidate the role of various chemical additives on ethanol synthesis over Rh- and Ni-based catalysts. Chemical additives used for this study will include S, P, Ag, Cu, Mn, and Na which have different electronegativities. The effect of additives on the surface state of the catalysts, heat of adsorption of reactant molecules, reaction intermediates, reaction pathways, reaction kinetics, and product distributions is/will be investigated by a series of experime… more
Date: April 9, 1990
Creator: Chuang, S. S. C.
Item Type: Refine your search to only Report
open access

The EGS4 Code System: Solution of gamma-ray and electron transport problems

Description: In this paper we present an overview of the EGS4 Code System -- a general purpose package for the Monte Carlo simulation of the transport of electrons and photons. During the last 10-15 years EGS has been widely used to design accelerators and detectors for high-energy physics. More recently the code has been found to be of tremendous use in medical radiation physics and dosimetry. The problem-solving capabilities of EGS4 will be demonstrated by means of a variety of practical examples. To faci… more
Date: February 9, 1990
Creator: Nelson, W. R. & Namito, Yoshihito.
Item Type: Refine your search to only Article
open access

(Energy and electricity supply and demand)

Description: At the request of the International Atomic Energy Agency (IAEA), representing eleven international agencies which are sponsoring the 1991 Helsinki Symposium on Electricity and the Environment, I traveled to Brussels to participate in the second meeting of one of four advisory groups established to prepare for the Symposium. At the meeting, I was involved in a review of a draft issue paper being prepared for the Symposium and of the Symposium program.
Date: October 9, 1990
Creator: Wilbanks, T.J.
Item Type: Refine your search to only Report
open access

(Environmental and geophysical modeling, fracture mechanics, and boundary element methods)

Description: Technical discussions at the various sites visited centered on application of boundary integral methods for environmental modeling, seismic analysis, and computational fracture mechanics in composite and smart'' materials. The traveler also attended the International Association for Boundary Element Methods Conference at Rome, Italy. While many aspects of boundary element theory and applications were discussed in the papers, the dominant topic was the analysis and application of hypersingular e… more
Date: November 9, 1990
Creator: Gray, L.J.
Item Type: Refine your search to only Report
open access

Evaluation of safety assessment methodologies in Rocky Flats Risk Assessment Guide (1985) and Building 707 Final Safety Analysis Report (1987)

Description: FSARs. Rockwell International, as operating contractor at the Rocky Flats plant, conducted a safety analysis program during the 1980s. That effort resulted in Final Safety Analysis Reports (FSARs) for several buildings, one of them being the Building 707 Final Safety Analysis Report, June 87 (707FSAR) and a Plant Safety Analysis Report. Rocky Flats Risk Assessment Guide, March 1985 (RFRAG85) documents the methodologies that were used for those FSARs. Resources available for preparation of those… more
Date: November 9, 1990
Creator: Walsh, B.; Fisher, C.; Zigler, G. & Clark, R. A.
Item Type: Refine your search to only Report
open access

Further studies of 60 Hz exposure effects on human function

Description: Public concern has been expressed about possible health risks arising from exposure to the electric and magnetic fields generated power distribution systems. This project is addressing this concern through a laboratory research program designed to evaluate the effects of brief exposure to known field conditions on multiple measures of human function. In previous research, we found that exposure had statistically significant effects on physiological measures of cardiac and brain activity, and on… more
Date: October 9, 1990
Creator: Graham, C. & Cohen, H.D.
Item Type: Refine your search to only Report
open access

Higgs effects in the polarization of top quarks

Description: Top quarks produced in high-energy collisions should exhibit a parity-conserving spin polarization normal to the production plane which can be measured by the asymmetry in their leptonic decays. A portion of this effect, which can be calculated in perturbation theory, is attributable to the quark`s QCD interactions. In addition, there is a component of the polarization due to the Yukawa coupling (g{sub Y} {congruent} m{sub T}/(250 GeV)) of the top quark with the Higgs sector. We can demonstrate… more
Date: October 9, 1990
Creator: Sivers, D.
Item Type: Refine your search to only Report
open access

Large P sub t jets at CDF

Description: The inclusive jet cross section and the dijet mass spectrum have been measured at the Fermilab Tevatron Collider at {radical}s = 1.8 TeV. These measurements span approximately 7 orders of magnitude in cross section and contain jets up to 400 GeV in transverse energy and dijet masses up to 950 GeV. Comparisons have been made to QCD at both orders {alpha}{sub s}{sup 2} and {alpha}{sub s}{sup 3}. 8 refs., 9 figs.
Date: May 9, 1990
Creator: Dell'Orso, M. (Pisa Univ. (Italy). Dipt. di Fisica)
Item Type: Refine your search to only Article
open access

Linear stationary second-degree methods for the solution of large linear systems

Description: The optimum linear stationary second-degree iterative method for solving linear systems of equations is not as good in general as the optimum semi-iterative method. However, for a suitable choice of parameters, the rate of convergence of the stationary method is very nearly as good as that of the semi-iterative method. The authors present a straightforward determination of these optimum parameter values and the asymptotic rate of convergence.
Date: July 9, 1990
Creator: Young, D.M. & Kincaid, D.R.
Item Type: Refine your search to only Report
open access

Method for co-processing waste rubber and carbonaceous material

Description: In a process for the co-processing of waste rubber and carbonaceous material to form a useful liquid product, the rubber and the carbonaceous material are combined and heated to the depolymerization temperature of the rubber in the presence of a source of hydrogen. The deploymerized rubber acts as a liquefying solvent for the carbonaceous material while a beneficial catalytic effect is obtained from the carbon black released on deploymerization the reinforced rubber. The reaction is carried out… more
Date: October 9, 1990
Creator: Farcasiu, M. & Smith, C. M.
Item Type: Refine your search to only Patent
open access

Method of electrode fabrication and an electrode for metal chloride battery

Description: A method of fabricating an electrode for use in a metal chloride battery and an electrode are provided. The electrode has relatively larger and more uniform pores than those found in typical electrodes. The fabrication method includes the steps of mixing sodium chloride particles selected from a predetermined size range with metal particles selected from a predetermined size range, and then rigidifying the mixture. The electrode exhibits lower resistivity values of approximately 0.5 {Omega}cm{s… more
Date: October 9, 1990
Creator: Bloom, I.D.; Nelson, P.A. & Vissers, D.R.
Item Type: Refine your search to only Patent
open access

Method of Electrode Fabrication and an Electrode for Metal Chloride Battery

Description: A method of fabricating an electrode for use in a metal chloride battery and an electrode are provided. The electrode has relatively larger and more uniform pores than those found in typical electrodes. The fabrication method includes the steps of mixing sodium chloride particles selected from a predetermined size range with metal particles selected from a predetermined size range, and then rigidifying the mixture. The electrode exhibits lower resistivity values of approximately 0.5 {Omega}cm{s… more
Date: October 9, 1990
Creator: Bloom, Ira D.; Nelson, Paul A. & Vissers, Donald R.
Item Type: Refine your search to only Patent
open access

Report of Foreign Travel of C. E. Childress, October 1990

Description: The International Institute of Welding is composed of some 600 technical experts from 36 countries. These individuals are divided by talent and personal interest into fifteen separate groups called Commissions, each with its own charter and goals. The title, and by inference the charter, of Commission V is : Quality Control and Quality Assurance of Welded Products. In pursuit of its charter Commission V has several subcommissions engaged in the development of drafts, procedures, and standards. … more
Date: November 9, 1990
Creator: Childress, C. E.
Item Type: Refine your search to only Report
open access

Status of target physics for inertial confinement fusion: Report on the review at DOE Headquarters, Germantown, MD on November 14--17, 1988

Description: A four day review to assess the status of target physics of inertial confinement fusion was held at US Department of Energy (DOE) Headquarters on November 14--17, 1988. This review completes the current series of reviews of the inertial fusion program elements to assess the status of the data base for a decision to proceed with the proposed Laboratory Microfusion Facility (LMF) that is being planned. In addition to target physics, the program elements that have been reviewed previously include … more
Date: March 9, 1990
Item Type: Refine your search to only Report
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