185 Matching Results

Search Results

Results: 1 - 24 next
open access

[Letter from Herbert Holl to William McCarter, May 7, 1990]

Description: Photocopy of a letter from Herbert Holl, executive director of Greater Denton Arts Council, to William McCarter, co-director of North Texas Institute for Educators on the Visual Arts. The letter is in regards to the Arts council awarding $750.00 to support North Texas Institute for Educators on the Visual Arts. A copy of the contract between both parties must be signed a returned January 31, 1991.
Date: May 7, 1990
Creator: Holl, Herbert
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: L.J. & Daisy Pate]

Description: Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, covering a news story Portrait by reporter Ramona Logan about Reverend L.J. Pate & Daisy Pate, who created a food pantry for those in need in their church. This story aired at 5pm.
Date: March 7, 1990
Duration: 1 minute 30 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Location: 32.700327 -96.780848
Partner: UNT Libraries Special Collections
open access

[Press Release: HIV Testing and Early Intervention Reviewal]

Description: A press release from the National Commission on Acquired Immune Deficiency Syndrome discussing their plans to meet and commence their studies on early intervention and psychosocial components of testing for HIV. The release is followed by a schedule for the event and a list of the participants.
Date: February 7, 1990
Creator: National Commission on Acquired Immune Deficiency Syndrome
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Chloride anion exchange coprocessing for recovery of plutonium from pyrochemical residues and Cs sub 2 PuCl sub 6 filtrate

Description: Continuing studies of plutonium recovery from direct oxide reduction (DOR) and electrorefining (ER) pyrochemical process residues show that chloride anion exchange coprocessing is useful and effective. Coprocessing utilizes DOR residue salt as a reagent to supply the bulk of chloride ion needed for the chloride anion exchange process and to improve ER residue salt solubility. ER residue salt and ER scrapeout can be successfully treated, either alone or together, using coprocessing. In addition,… more
Date: December 7, 1990
Creator: Muscatello, A. C. & Killion, M. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Praise enhancements to include general strain hardening exponents and mid-life residual stress and water chemistry changes

Description: The purpose of this document is to describe some recent changes made to the PRAISE Code to provide some additional capabilities. The major changes are associated with the new capability to analyze cases where there is a mid-life change in residual stresses and/or water chemistry. Such changes have been proposed as a means of improving the reliability of BWR piping by reducing the oxygen content of the coolant (or other favorable chemistry changes) or altering the residual stresses near welds to… more
Date: June 7, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermally Induced Structural Changes in Coal Combustion

Description: The project objectives are (1) to measure the effect of devolatilization temperature and time on properties of the char and (2) characterize and quantify the effect of thermal annealing on char reactivity during char burnout under conditions of pulverized combustion. Coal devolatilization runs continued during the reporting period. Elemental analysis and N{sub 2} BET surface areas measurements were carried out on the three chars produced in the devolatilization runs. The results are presented. … more
Date: December 7, 1990
Creator: Gavalas, G. R. & Flagan, R. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A photoemission investigation of compound semiconductor monodisperse clusters

Description: We have used synchrotron radiation photoemission to probe the valence and core level electronic structure of compound-semiconductor monodisperse clusters (nanocrystals). These clusters exhibited a 10% or less variation relative to the mean diameter and were attached to the metal substrates via alkane chains. Direct evidence of gap broadening due to size variation in CdS clusters was observed. The novel utilization of alkane chain attachment is the key to eliminating the otherwise debilitating p… more
Date: December 7, 1990
Creator: Tobin, J. G. (Lawrence Livermore National Lab., CA (USA)); Colvin, V. L. & Alivisatos, A. P. (California Univ., Berkeley, CA (USA))
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Biological Processes in the Water Column of the South Atlantic Bight: Zooplankton Responses

Description: The goal of the Fall Removal Experiment 1987 was to determine the processes affecting the dependent and fate of low salinity coastal water and of biological material therein during fall when winds are mainly south-to westward. Five zooplankton taxa, Acartia tonsa, (A. tonsa) Paracalanus species (sp), Temora turbinata (T. turbinata), Oncaea sp, and Sagitta enflata were examined. Data on the distribution of all five taxa were presented, and distribution over time was also studied. The abundance o… more
Date: February 7, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Molecular cytogenetics using fluorescence in situ hybridization

Description: Fluorescence in situ hybridization (FISH) with chromosome-specific probes enables several new areas of cytogenetic investigation by allowing visual determination of the presence and normality of specific genetic sequences in single metaphase or interphase cells. in this approach, termed molecular cytogenetics, the genetic loci to be analyzed are made microscopically visible in single cells using in situ hybridization with nucleic acid probes specific to these loci. To accomplish this, the DNA i… more
Date: December 7, 1990
Creator: Gray, J.W.; Kuo, Wen-Lin; Lucas, J.; Pinkel, D.; Weier, H-U. & Yu, Loh-Chung.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A technique for shell compression measurements of laser fusion targets by neutron activation of a rubidium tracer

Description: At the Nova Laser, the activation of a rubidium tracer incorporated in the shell of ICF targets has become a standard diagnostic technique for measuring the compressed shell areal density {l angle}{rho}{Delta}R{r angle}. The isotope {sup 85}Rb is activated by 14 MeV implosion neutrons to produce the isomer {sup 84m}Rb(t{sub {1/2}} = 20.5 min) which is used to determine the shell {l angle}{rho}{Delta}R{r angle} while the radioactive isotope {sup 86}Rb(t{sub 1/2} = 18.8 d) is used to determine th… more
Date: December 7, 1990
Creator: Lane, S.M. & Nelson, M.B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Effects of relativity of RTEX in collisions of U sup q+ with light targets

Description: We have calculated the resonant transfer and excitation cross sections in collisions of U{sup q+} (q = 82, 89, 90) ion with H{sub 2}, He and C in impulse approximation using the multi-configuration Dirac-Fock method. The calculations were carried out in intermediate coupling with configuration interaction. The quantum electrodynamic and finite nuclear size corrections were included in the calculations of transition energies. The Auger rates were calculated including the contributions from Coulo… more
Date: November 7, 1990
Creator: Chen, Mau Hsiung.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High power CW performance from a Ti:Sapphire laser and a single-pass amplifier

Description: Using two argon-ion lasers to pump a CW Ti:Sapphire laser we have demonstrated consistent high power (19 watts) operation with a low order spatial mode. Thermal lensing effects were controlled by enclosing the laser in a vacuum and cooling the rod with liquid nitrogen. Using this laser we also demonstrated a CW Ti:Sapphire amplifier with an efficiency of 20%. 5 refs., 5 figs.
Date: November 7, 1990
Creator: Erbert, G. V.; Bass, I. L.; Hackel, R. P.; Jenkins, S.; Kanz, K. V. & Paisner, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Spectroscopic study of coal structure and reactivity

Description: Work done during this period (December 15, 1989 to March 14, 1990) covered two of the three primary areas of study of this project. The first involved the continuing development a of step-scanning interferometer for the photoacoustic depth-profiling of materials whose composition varies in the spatial region between 5 and 50 {mu}m from its surface. The second covered the initial construction of an on-line interface between a supercritical fluid chromatograph (SFC) and a Fourier transform infrar… more
Date: September 7, 1990
Creator: Rabenstein, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Experience with Position Sensitive Neutron Detectors at the Intense Pulsed Neutron Source

Description: At the Intense Pulsed Neutron Source (IPNS) pulses of protons accelerated in a synchrotron produce pulses of fast neutrons via the spallation process in an enriched uranium target. After moderation, the resulting pulses of slow neutrons are directed into beams which serve a variety of neutron scattering instruments. Currently there are thirteen neutron scattering instruments in operation or under development at IPNS, and six of these use position-sensitive neutron detectors (PSDs). These PSDs a… more
Date: May 7, 1990
Creator: Crawford, R. K.; Haumann, J. R.; Schultz, A. J.; Felcher, G. P.; Epperson, J. E.; Thiyagarajan, P. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Accident analysis and safety review of DOE Category B reactors

Description: DOE is employing the principle of comparability with the NRC requirements to guide its safety program. Since the safety record of research reactors licensed by the NRC has been established and accepted, the comparison of DOE Orders applicable to DOE research reactors with the NRC regulations applicable to research reactors would identify strengths and weaknesses of the DOE Orders. The comparison was made in 14 general topics of safety which are labeled Areas of Safety Concerns. This paper focus… more
Date: August 7, 1990
Creator: Kimura, C. Y.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Report of Foreign Travel of Environmental Sciences Research Staff, October 1990

Description: BIOMOVS (BIOspheric MOdel Validation Study) is an international cooperative study initiated in 1985 by the Swedish National Institute of Radiation Protection to test models designed to calculate the environmental transfer and bioaccumulation of radionuclides and other trace substances. The objective of the symposium and workshop was to synthesize results obtained during Phase 1 of BIOMOVS (the first five years of the study) and to suggest new directions that might be pursued during Phase 2 of B… more
Date: November 7, 1990
Creator: Blaylock, B. Gordon; Hoffman, F. Owen & Gardner, Robert H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Corrosion of copper in Mound's single-pass potable water systems

Description: An increase in the number of copper plumbing failures at Mound prompted a thorough analysis of the failed components. Most of the components were elbow joints. All of these parts exhibited the same type of accelerated deterioration. The failed parts were analyzed optically and by scanning electron microscopy. Water chemistry, solder, and soldering fluxes were evaluated to determine their possible roles in the accelerated attack. Cross-sectioning of the elbow joints revealed residual soldering f… more
Date: December 7, 1990
Creator: Schleitweiler, Patrick M. & Miller, Pamela S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Inner-shell ionization of lithium-like chromium ions

Description: We have used high-resolution x-ray spectroscopy to investigate inner-shell ionization of Cr{sup 21+} ions by electron impact using the Electron Beam Ion Trap at Lawrence Livermore Laboratory. Our measurements indicate that inner-shell ionization enhances the intensity of the radiative transition 1s2s {sup 3}S{sub 1}{yields}1s{sup 2}{sup 1}S{sub 0}. 7 refs., 4 figs., 1 tab.
Date: September 7, 1990
Creator: Vogel, D. A.; Beiersdorfer, P.; Marrs, R. E.; Wong, K. L. & Zasadzinski, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Bioechnology of indirect liquefaction

Description: The project on biotechnology of indirect liquefaction was focused on conversion of coal derived synthesis gas to liquid fuels using a two-stage, acidogenic and solventogenic, anaerobic bioconversion process. The acidogenic fermentation used a novel and versatile organism, Butyribacterium methylotrophicum, which was fully capable of using CO as the sole carbon and energy source for organic acid production. In extended batch CO fermentations the organism was induced to produce butyrate at the exp… more
Date: May 7, 1990
Creator: Datta, R.; Jain, M. K.; Worden, R. M.; Grethlein, A. J.; Soni, B.; Zeikus, J. G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen