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[News Release: New Board Member]
A news release from the AIDS Interfaith Network about Rev. Charles Carnhan being elected to the Board of Directors of the AIDS National Interfaith Network.
Date:
September 24, 1990
Creator:
AIDS Interfaith Network
Object Type:
Text
System:
The UNT Digital Library
[News Release: AIDS Interfaith Network]
A news release from the AIDS Interfaith Network Inc. about being recognized as a model ministry to people with HIV/AIDS at the 2nd annual Conference held in Chicago.
Date:
September 24, 1990
Creator:
AIDS Interfaith Network Inc.
Object Type:
Text
System:
The UNT Digital Library
[Studies of non-linear dynamics of dissipative systems]. [Final report, April 1, 1988--October 31, 1989]
In the period of this grant I worked on three main areas: (1) Symmetries in inviscid flow equations in one, two, and three dimensions and related nonlinear stability theorems for these flows; (2) applications of Hamiltonian mechanics to the problems of shallow water equations and internal wave dynamics in oceanic flows; and, (3) analysis of signals from chaotic systems with an eye toward learning how to build models of chaotic systems in nature.
Date:
September 10, 1990
Creator:
Abarbanel, D. I.
Object Type:
Report
System:
The UNT Digital Library
(Studies of non-linear dynamics of dissipative systems)
In the period of this grant I worked on three main areas: (1) Symmetries in inviscid flow equations in one, two, and three dimensions and related nonlinear stability theorems for these flows; (2) applications of Hamiltonian mechanics to the problems of shallow water equations and internal wave dynamics in oceanic flows; and, (3) analysis of signals from chaotic systems with an eye toward learning how to build models of chaotic systems in nature.
Date:
September 10, 1990
Creator:
Abarbanel, D.I.
Object Type:
Report
System:
The UNT Digital Library
Study of electron-positron interactions
For the past seven years, this group has been interested in the study of tests of the Standard Model of Electroweak interactions. The program has centered about the AMY experiment which examines the nature of the final state products in electron-positron collisions in the center of mass energy range near 60 GeV. Results of these measurements have shown a remarkable consistency with the predictions of the minimal model of 3 quark and lepton generations and single charged and neutral intermediate bosons. No new particles or excited states have been observed nor has any evidence for departures in cross sections or angular asymmetries from expectations been observed. These conclusions have been even more firmly established by the higher energy results from the LEP and SLC colliders at center of mass energies of about 90 GeV. Our focus is shifting to the neutrino as a probe to electroweak interactions. The relative merit of attempting to observe neutrinos from point sources versus observing neutrinos generally is not easy to predict. The improved ability to interpret is offset by the probably episodic nature of the emission and irreproducibility of the results. In this phase of development, it is best to be sensitive to both …
Date:
September 15, 1990
Creator:
Abashian, A.; Gotow, K. & Philonen, L.
Object Type:
Report
System:
The UNT Digital Library
Velocity Measurements at Three Fish Screening Facilities in the Yakima Basin, Washington: Summer 1989 Annual Report.
The Pacific Northwest Laboratory (PNL) measured the velocity conditions at three fish screening facilities in the Yakima River Basin: Wapato, Chandler, and Easton Screens. The measurement objectives were different at the three screens. At Wapato, approach and sweep velocities were measured to evaluate the effect of rearing pens in the screen forebay. A complete survey was performed at the Chandler Screens. At Easton, velocity was measured behind the screens to provide information for the installation of porosity boards to balance flow through the screens. Salmon-rearing pens used at the Wapato Canal had a minimal effect on the magnitude of approach and sweep velocities at the face of the drum screens, although the pens caused increased turbulence and variability in water velocities. The net pens did not appear to affect flows through the three fish bypasses. 8 refs., 17 figs., 5 tabs.
Date:
September 1, 1990
Creator:
Abernethy, C. Scott; Neitzel, Duane A. & Lusty, E. William
Object Type:
Report
System:
The UNT Digital Library
Quantitative non-destructive evaluation of high-temperature superconducting materials
Even though the currently intensive research efforts on high-temperature superconducting materials have not yet converged on a well specified material, the strong indications are that such a material will be brittle, anisotropic, and may contain many flaws such as microcracks and voids at grain boundaries. Consequently, practical applications of high temperature superconducting materials will require a very careful strength analysis based on fracture mechanics considerations. Because of the high sensitivity of the strength of such materials to the presence of defects, methods of quantitative non-destructive evaluation may be expected to play an important role in strength determinations. This proposal is concerned with the use of ultrasonic methods to detect and characterize isolated cracks, clusters of microcracks and microcracks distributed throughout the material. Particular attention will be devoted to relating ultrasonic results directly to deterministic and statistical linear elastic fracture mechanics considerations.
Date:
September 15, 1990
Creator:
Achenbach, J. D.
Object Type:
Report
System:
The UNT Digital Library
Quantitative non-destructive evaluation of high-temperature superconducting materials. Technical progress report, September 1, 1989--August 30, 1990
Even though the currently intensive research efforts on high-temperature superconducting materials have not yet converged on a well specified material, the strong indications are that such a material will be brittle, anisotropic, and may contain many flaws such as microcracks and voids at grain boundaries. Consequently, practical applications of high temperature superconducting materials will require a very careful strength analysis based on fracture mechanics considerations. Because of the high sensitivity of the strength of such materials to the presence of defects, methods of quantitative non-destructive evaluation may be expected to play an important role in strength determinations. This proposal is concerned with the use of ultrasonic methods to detect and characterize isolated cracks, clusters of microcracks and microcracks distributed throughout the material. Particular attention will be devoted to relating ultrasonic results directly to deterministic and statistical linear elastic fracture mechanics considerations.
Date:
September 15, 1990
Creator:
Achenbach, J. D.
Object Type:
Report
System:
The UNT Digital Library
Power Burst Facility/Boron Neutron Capture Therapy Program for cancer treatment
This monthly bulletin describes activities in the following project areas during this reporting period: supporting technology development, large animal model studies, neutron source and facility preparation, administration and common support, and PBF operations. (FI)
Date:
September 1, 1990
Creator:
Ackermann, A.L. (ed.) & Dorn, R.V. III.
Object Type:
Report
System:
The UNT Digital Library
Advanced development of the spectrum sciences Model 5005-TF, single-event test fixture
This report summarizes the advanced development of the Spectrum Sciences Model 5005-TF, Single-Event Test Fixture. The Model 5005-TF uses a Californium-252 (Cf-252) fission-fragment source to test integrated circuits and other devices for the effects of single-event phenomena. Particle identification methods commonly used in high-energy physics research and nuclear engineering have been incorporated into the Model 5005-TF for estimating the particle charge, mass, and energy parameters. All single-event phenomena observed in a device under test (DUT) are correlated with an identified fission fragment, and its linear energy transfer (LET) and range in the semiconductor material of the DUT.
Date:
September 1, 1990
Creator:
Ackermann, M.R.; Browning, J.S. (Sandia National Labs., Albuquerque, NM (USA)); Hughlock, B.W. (Boeing Aerospace and Electronics Co., Seattle, WA (USA)); Lum, G.K. (Lockheed Missiles and Space Co., Sunnyvale, CA (USA)); Tsacoyeanes, W.C. (Draper (Charles Stark) Lab., Inc., Cambridge, MA (USA)) & Weeks, M.D. (Spectrum Sciences, Inc., Santa Clara, CA (USA))
Object Type:
Report
System:
The UNT Digital Library
The Paducah Post (Paducah, Tex.), Vol. 84, No. 29, Ed. 1 Wednesday, September 5, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
September 5, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 30, Ed. 1 Wednesday, September 12, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
September 12, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 31, Ed. 1 Wednesday, September 19, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
September 19, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 31, Ed. 1 Wednesday, September 19, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
September 19, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
The Paducah Post (Paducah, Tex.), Vol. 84, No. 32, Ed. 1 Wednesday, September 26, 1990
Weekly newspaper from Paducah, Texas that includes local, state, and national news along with advertising.
Date:
September 26, 1990
Creator:
Adams, Patty
Object Type:
Newspaper
System:
The Portal to Texas History
Transient diffusion of radionuclides from a cylindrical waste solid into fractured porous rock
This paper presents the numerical results of an analytical study for mass transfer and transport of radionuclides released from a cylindrical waste solid into water-saturated fractured porous rock. The purposes of this study are (1) to predict the diffusive mass flux from a cylindrical waste solid into a planar fracture and the surrounding rock matrix for the low-flow conditions wherein near-field mass transfer is expected to be controlled by molecular diffusion and (2) to investigate the effects of cylindrical geometry and of multidimensional matrix diffusion including diffusion in the directions parallel to the fracture plane. In the paper are presented the derivation of an analytical solution for the time-dependent mass transfer from the cylinder for low-flow conditions and computer-code implementation and numerical results. The problem was first proposed and solved analytically by Chambre. Numerical results are shown for (1) the diffusive mass fluxes from the cylindrical waste solid into the fracture and into the rock matrix, (2) the diffusive mass flux across the rock/fracture interface, and (3) the instantaneous concentration isopleths in the fracture and in the rock matrix. Comparison of the present cylindrical model with previous planar models, wherein contaminant was assumed to be released only into the fracture …
Date:
September 1, 1990
Creator:
Ahn, J. (Tokyo Univ. (Japan). Faculty of Engineering); Chambre, P. L. & Pigford, T. H. (California Univ., Berkeley, CA (USA). Dept. of Nuclear Engineering Lawrence Berkeley Lab., CA (USA))
Object Type:
Report
System:
The UNT Digital Library
[Photograph 2012.201.B0393.0431]
Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Edmond firefighters become familiarized with Medi Flight equipment during a recent visit by the service to an Edmond fire station."
Date:
September 10, 1990
Creator:
Aker, Joe
Object Type:
Photograph
System:
The Gateway to Oklahoma History
Top Quark Mass Spectrum From Flavor-Changing Processes
The input from flavor-changing processes is reviewed and results of several analyses are presented on the top quark mass spectrum without recourse to the neutral-current data. A top quark mass in the range 135 {plus minus} 25 GeV is much preferred, but a very massive top quark above 300 GeV can not be ruled out. Comments are made about the future use of the inclusive decay B {yields} {gamma} + X{sub S=1} for constraining the top quark mass. 24 refs., 2 figs.
Date:
September 1990
Creator:
Albright, Carl H.
Object Type:
Article
System:
The UNT Digital Library
Ion-induced grain growth in multilayer and coevaporated metal alloy thin films
Irradiation experiments were conducted on multilayer (ML) and coevaporated (CO) thin films in order to examine the role that the heat of mixing ({Delta}H{sub mix}) has in ion-induced grain growth. Room temperature irradiations using 1.7 MeV Xe were performed in the High Voltage Electron Microscope at Argonne National Laboratory. The alloys studied (Pt-Ti, Pt-V, Pt-Ni, Au-Co and Ni-Al) spanned a large range of {Delta}H{sub mix} values. Comparison of grain growth rates between ML and CO films of a given alloy confirmed a heat of mixing effect. Differences in grain growth rates between ML and CO films scaled according to the sign and magnitude of {Delta}H{sub mix} of the system (with exception of the Pt-V system). Substantial variations in growth rates among CO alloy films experiencing similar irradiation damage demonstrated that a purely collisional approach is inadequate for describing ion-induced grain growth and consideration must also be given to material-specific properties. Results from CO alloy films were consistent with a thermal spike model of ion-induced grain growth. The grain boundary mobility was observed to be proportional to the thermal spike-related parameter, (F{sub D}{sup 2})/({Delta}H{sub coh}{sup 3}), where F{sub D} is the deposited damage energy and {Delta}H{sub coh} is the cohesive energy.
Date:
September 1, 1990
Creator:
Alexander, D. E.; Was, G. S. & Rehn, L. E.
Object Type:
Article
System:
The UNT Digital Library
[Clipping: 6 AIDS drug studies in works at clinic]
A newspaper clipping about new treatments being tried for AIDS.
Date:
September 10, 1990
Creator:
Allen, Leona
Object Type:
Clipping
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [6], September 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
September 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Newsletter of the Texas Chapter of the American Fisheries Society, Number 55, September 1990
Newsletter of the Texas Chapter of the American Fisheries Society containing information about the organization, membership, and field of aquaculture and ecosystem management.
Date:
September 1990
Creator:
American Fisheries Society. Texas Chapter.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Engineering, installation, testing, and initial operation of the DIII-D Advanced Divertor
The Advanced Divertor (AD) for General Atomics tokamak, DIII-D, was installed in the summer of 1990. The AD has enabled two classes of physics experiments to be run: divertor biasing and divertor baffling. Both are new experiments for DIII-D. The AD has two principal components: (1) a continuous ring electrode; and (2) a toroidally symmetric baffle. The tokamak can be run in bias baffle or standard DIII-D divertor modes by accurate positioning of the outer divertor strike point through the use of the DIII-D control system. The paper covers design, analysis, fabrication, installation, instrumentation, testing, initial operation, and future plans for the Advanced Divertor from an engineering viewpoint. 2 refs., 5 figs.
Date:
September 1, 1990
Creator:
Andersen, P. M.; Baxi, C. B.; Reis, E. E.; Schaffer, M. J. & Smith, J. P.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Alvin Dean, September 17, 1990
Access:
Use of this item is restricted to the UNT Community
Interview with Alivin Dean, a farmer and former member of the Civilian Conservation Corps from Geronimo, Texas, regarding his experiences and memories of participating in the CCC during the Great Depression.
Date:
September 17, 1990
Creator:
Antle, Mike & Dean, Alvin
Object Type:
Book
System:
The UNT Digital Library