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North Texas institute emphasizes link between vivid art and a vibrant economy.

Description: A press release describing an educational institute for thirty North Texas art educators and principals sponsored by the North Texas Institute for Educators on the Visual Arts (NTIEVA) held at the Amon Carter Museum on June 20, 1990. The goal of the institute was teach visual literacy and sensory awareness to educators in order to give them tools to teach creative and higher-level thinking skills to their students. The institute used interactive exercises like role playing and a "sound symphony… more
Date: June 14, 1990
Creator: Read, Kip
Partner: UNT Libraries Special Collections
open access

Global Warming: A Northwest Perspective

Description: The Northwest Power Planning Council convened a symposium in Olympia, Washington, on the subject of global climate change ( the greenhouse effect'') and its potential for affecting the Pacific Northwest. The symposium was organized in response to a need by the Power Council to understand global climate change and its potential impacts on resource planning and fish and wildlife planning for the region, as well as a need to understand national policy developing toward climate change and the Pacif… more
Date: February 1990
Creator: Scott, M. J. & Counts, C. A.
Partner: UNT Libraries Government Documents Department
open access

Run - Beyond - Cladding - Breach (RBCB) test results for the Integral Fast Reactor (IFR) metallic fuels program

Description: In 1984 Argonne National Laboratory (ANL) began an aggressive program of research and development based on the concept of a closed system for fast-reactor power generation and on-site fuel reprocessing, exclusively designed around the use of metallic fuel. This is the Integral Fast Reactor (IFR). Although the Experimental Breeder Reactor-II (EBR-II) has used metallic fuel since its creation 25 yeas ago, in 1985 ANL began a study of the characteristics and behavior of an advanced-design metallic… more
Date: January 1, 1990
Creator: Batte, G. L. (Argonne National Lab., Idaho Falls, ID (USA)) & Hoffman, G. L. (Argonne National Lab., IL (USA))
Partner: UNT Libraries Government Documents Department
open access

Advanced radioactive waste-glass melters

Description: During pilot scale operations of the Scale Glass Melter for the US Department of Energy a team of engineers and scientists was formed to assess the need for continued melter design development to support the Defense Waste Processing Facility (DWPF), and prioritize future efforts. Recently this has taken on new importance because of selection of the DWPF Melter design as the reference for the Hanford Waste Vitrification Project (HWVP), and increased interest at the West Valley Demonstration Proj… more
Date: January 1, 1990
Creator: Bickford, D. F.
Partner: UNT Libraries Government Documents Department
open access

Image manipulation in the SIGGRAPH Interactive Proceedings

Description: We built a multimedia document system for the SIGGRAPH Interactive Proceedings to demonstrate the potentials and challenges in using technology to capture better the essence of SIGGRAPH conferences. The prototype system uses the NeXT computer system to present textual, mathematical, illustrative, colorful, audio, video and animated material. Special attention was given to including tools for interactive manipulation of images included in typical SIGGRAPH papers. 6 refs., 6 figs.
Date: January 1, 1990
Creator: Phillips, R. L. (Los Alamos National Lab., NM (USA)) & Beach, R. J. (Xerox Palo Alto Research Center, CA (USA))
Partner: UNT Libraries Government Documents Department
open access

Probing the Big Bang with LEP

Description: It is shown that LEP probes the Big Bang in two significant ways: (1) nucleosynthesis and (2) dark matter constraints. In the first case, LEP verifies the cosmological standard model prediction on the number of neutrino types, thus strengthening the conclusion that the cosmological baryon density is {approximately}6% of the critical value. In the second case, LEP shows that the remaining non-baryonic cosmological matter must be somewhat more massive and/or more weakly interacting that the favor… more
Date: June 1, 1990
Creator: Schramm, D. N.
Partner: UNT Libraries Government Documents Department
open access

Substorms: Their expansion and recovery phases

Description: Solar flares and magnetospheric substorms are each presumably processes by which energy is released from storage in magnetic fields and converted into kinetic energy of plasma and energetic particles. There are a number of analogies between flares and substorms. This paper briefly discusses substorms, their expansion and recovery phases, and a model by which they are presently explained. Two features of substorms, the retreating neutral line'' and the separatrix layer'' are offered as features … more
Date: January 1, 1990
Creator: Hones, E. W.
Partner: UNT Libraries Government Documents Department
open access

Proposed success demonstration criteria for the Department of Energy's waste reduction efforts

Description: Seven proposed criteria for demonstration of success in waste reduction have been developed: reduced amount of hazardous waste, reduced waste management cost, improved regulatory compliance, reduced health risk, increased production efficiency, reduced accident risk, and improved public relations. A detailed description of each of the criteria is presented along with a discussion for each of the mechanisms for measurement, required commitments, strengths, and weaknesses. 2 refs.
Date: January 1, 1990
Creator: Suffern, J. S.
Partner: UNT Libraries Government Documents Department
open access

Graph Structure Model

Description: The Graph Structure (GRPHSTRUC) Model is a software system tool specifically developed to be used by a computer security analyst to study the security and analyze the design of computer networks. However, any system that can be characterized and represented by a graph structure could employ GRPHSTRUC with some minor system modifications. The GRPHSTRUC model is a knowledge-based expert system using icons and object-oriented programming methodologies. GRPHSTRUC has been designed and developed to … more
Date: January 1, 1990
Creator: Dreicer, J. S.
Partner: UNT Libraries Government Documents Department
open access

Fifth-order aberrations in magnetic quadrupole-octupole systems

Description: Explicit integral expressions are given for the fifth-order geometrical aberration coefficients in rectilinear magnetic quadrupole-octupole systems used for the transport of nonrelativistic charged particle beams. The numerical values of the fifth-order geometrical aberration coefficients for a rare earth cobalt (REC) quadrupole doublet are given as an example. 26 refs., 5 figs., 4 tabs.
Date: January 1, 1990
Creator: Ling, K. M.
Partner: UNT Libraries Government Documents Department
open access

Perimeter radiation monitors for the control and physical security of special nuclear materials

Description: Perimeter radiation monitors are gamma-ray and neutron measurement systems that can provide timely notice of theft or diversion of special nuclear material (SNM). The monitors may be hand-held instruments operated by security inspectors or automatic pedestrian or vehicle monitors located in exit pathways. A monitor's performance depends on its design, the characteristics of SNM and the operating environment, and proper monitor calibration and maintenance. Goals of ASTM Subcommittee C26.12 are t… more
Date: January 1, 1990
Creator: Fehlau, P. E.
Partner: UNT Libraries Government Documents Department
open access

Search for the top quark in electron-muon events with CDF

Description: The CDF detector has collected data for an integrated luminosity of 4.4 pb{sup {minus}1} during the 1988--89 Tevatron Collider run. This sample has been used to search for the top quark. We report here the results of the analysis of the electron-muon topology. We find that a top mass in the 28 to 72 GeV is excluded at the 95% confidence level. The same limits apply to a possible fourth generation, charge {minus}1/3, b{prime} quark decaying via the charged current. 21 refs., 14 figs.
Date: February 1, 1990
Creator: Barbaro-Galtieri, A.
Partner: UNT Libraries Government Documents Department
open access

Reich-Moore and Adler-Adler representations of the sup 235 U cross sections in the resolved resonance region

Description: In the first part of this paper, a reevaluation of the low-energy neutron cross sections of {sup 235}U is described. This reevaluation was motivated by the discrepancy between the measured and computed temperature coefficients of reactivity and is based on recent measurements of the fission cross section and of {eta} in the thermal and subthermal neutron energy regions. In the second part of the paper, we discuss the conversion of the Reich-Moore resonance parameters, describing the neutron cro… more
Date: January 1, 1990
Creator: de Saussure, G.; Leal, L. C. & Perez, R. B. (Oak Ridge National Lab., TN (USA) Tennessee Univ., Knoxville, TN (USA))
Partner: UNT Libraries Government Documents Department
open access

Impression creep characterization of TiAl weldments

Description: The Impression Creep technique has been applied to XD{trademark} TiAl weldments to evaluate the local creep resistance of the fusion zone and the heat affected zone. The material used in this study was TiAl produced by Martin Marietta Research Laboratories, using their patented ingot processing which incorporates 1 to 10 {mu}m diameter particles of carbide, nitride or boride compounds. The impression creep technique uses a small indenter to locally evaluate the creep resistance of the heterogen… more
Date: January 1, 1990
Creator: Gibbs, W. S.; Aikin, R. M. Sr.; Martin, P. L. & Patterson, R. A.
Partner: UNT Libraries Government Documents Department
open access

Resonance computations for cells with fuel annuli

Description: Two methods have been developed for the computation of resonance integrals in cells containing annular fuel regions. Both are based on rational approximations. One is a generalization of a one-term rational approximation method developed by Segev for a cell with a single fuel annulus. The second modifies the earlier Chen-Gelbard two-term method originally used for double-heterogeneity calculations. Both methods were tested, in cells with two fuel annuli, for various U{sup 235} and U{sup 238} re… more
Date: January 1, 1990
Creator: Hwang, R. N. & Gelbard, E. M.
Partner: UNT Libraries Government Documents Department
open access

Expanded and applied sixteen neutron-energy-group cross-section library

Description: The purpose of this work was fivefold: to develop an expanded neutron cross-section library containing approximately 1200 cross-section sets with the Hansen-Roach (H-R) sixteen neutron-energy-group structure; to provide an enhanced computational tool on a personal computer for criticality calculations; to provide consistent values of the effective scattering cross sections (sigma-s) for each set of the expanded H-R library, for selecting the resonance self-shielded cross sections (sigma-p); to … more
Date: January 1, 1990
Creator: Hopper, C. M. & Renier, J. P.
Partner: UNT Libraries Government Documents Department
open access

A lattice gas automata model for heterogeneous chemical reactions at mineral surfaces and in pore networks

Description: A lattice gas automata (LGA) model is described, which couples solute transport with chemical reactions at mineral surfaces and in pore networks. Chemical reactions and transport are integrated into a FHP-I LGA code as a module so that the approach is readily transportable to other codes. Diffusion in a box calculations are compared to finite element Fickian diffusion results and provide an approach to quantifying space-time ratios of the models. Chemical reactions at solid surfaces, including … more
Date: January 15, 1990
Creator: Wells, J. T.; Janecky, D. R. & Travis, Bryan J.
Partner: UNT Libraries Government Documents Department
open access

An analysis of the finite-differenced, even-parity discrete-ordinates equations in slab geometry

Description: Considerable effort has been expended in recent years in finding improved spatial differencing schemes for the neutron and radiation transport equations. Standard criteria used to select a candidate scheme are its order of spatial convergence for small mesh size and its positivity in the sense that positive solutions emerge from positive input data. More recently, it has become clear that truly robust schemes must behave well in diffusing regions and must be compatible with an effective iterati… more
Date: January 31, 1990
Creator: Miller, W. F. Jr.
Partner: UNT Libraries Government Documents Department
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.
Partner: UNT Libraries Government Documents Department
open access

Present status of BNL polarized sources

Description: A review is given of the BNL polarized source development occurring since the 1986 Workshop in Montana, Switzerland. The polarized source in operation for the AGS produces {approx}40 {mu}A of {rvec H}{sup {minus}} with 75--80% polarization. Development of a cold atomic beam for a higher intensity source has concentrated on studies of spin selection and focusing with both a superconducting solenoid and sextupoles. Ionization of H{sup O} by D{sup {minus}} charge exchange using the ring magnetron … more
Date: January 1, 1990
Creator: Alessi, J. G.; DeVito, B.; Hershcovitch, A.; Kponou, A. & Meitzler, C. R.
Partner: UNT Libraries Government Documents Department
open access

V sup 0 Production with 14. 5 GeV/c Silicon Beams

Description: This talk deals with {Lambda}, K{sub s}{sup 0} and {bar {Lambda}} production with 14.5 GeV/c Silicon beams. Why study {Lambda}{sup 0} production Because the study of strangeness is an important part of the search for Quark Gluon Plasma (QGP). Many models predict an enhancement of strangeness in a QGP as compared to the amount of strangeness produced in a superposition of nucleon-nucleon interactions. The amount of enhancement varies from model to model. Even if no QGP is detected at AGS energie… more
Date: March 26, 1990
Creator: Bonner, B. E.; Buchanan, J. A.; Chiou, C. N.; Clement, J. M.; Corcoran, M. D.; Kruk, J. W. et al.
Partner: UNT Libraries Government Documents Department
open access

Microseismic monitoring of the Chaveroo oil field, New Mexico

Description: Microseismicity was monitored in the Chaveroo oil field in southeastern New Mexico during, and for 5 weeks following, a pressurized stimulation of a well being prepared as an injector for a water flood operation. Three-thousand barrels of water were injected into the reservoir over a 5.5-hour period. Little seismicity was detected during the stimulation. Intermittent monitoring over a 5-week period following the injection indicated detectable seismicity occurring with activity levels varying in… more
Date: February 6, 1990
Creator: Rutledge, J. T. & Albright, J. N.
Partner: UNT Libraries Government Documents Department
open access

Spallation-based science and technology and associated nuclear data requirements

Description: Rapid advances in accelerator technology in recent years promise average proton beam currents as high as 250 mA with energies greater than one GeV. Such an accelerator could produce very high intensities of neutrons and other nuclear particles thus opening up new areas of science and technology. An example is the efficient burning of transuranic and fission product waste. With such a spallation-burner it appears that high-level waste might be converted to low-level waste on a time scale compara… more
Date: January 1, 1990
Creator: Bowman, C. D.; Lisowski, P. W. & Arthur, E. D.
Partner: UNT Libraries Government Documents Department
open access

Some ongoing research in the U. S. that relates to nuclear reactor pressure components

Description: The presentation of US research programs at the last IWG-RRPC meeting emphasized several aspects of the work sponsored by the Nuclear Regulatory Commission (NRC). The remarks given this year will focus on work that relates to pressurized water reactor primary pressure vessels. While most of the comments are relative to NRC work, some are included relative to the Electric Power Research Institute (EPRI) and the Department of Energy. Additionally, a forthcoming CSNI workshop on fracture methodolo… more
Date: March 1, 1990
Creator: Pugh, C. E.
Partner: UNT Libraries Government Documents Department
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