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[Letter from Cassandra Broadus to Sonja Starnes, January 29, 1991]
Photocopy of a letter from Cassandra Broadus, North Texas Institute for Educators on the Visual Arts, to Sonja Starnes, Bedford Heights Elementary. In regards to the enclosed Crayola Dream-Maker IV packet for Starnes' classroom. The packet offers good ideas for studio production activities as well as additional information on art advocacy. Broadus asks Starnes to share the packet with Peggy Mitchell and other teachers at Bedford.
Date:
January 29, 1991
Creator:
Broadus, Cassandra
Object Type:
Letter
System:
The UNT Digital Library
Magnetic field in the SSC arc quad
In part one we report on field calculations along the conductor in the end region of the SSC arc-quad. We have determined that the maximum field in the 2D section is 5.04 tesla located at the pole turn of the inner layer somewhere in the middle of the cable (strand 9)(fields are at 6500 A). At the end'' the maximum field is slightly higher 5.09 tesla located at the overpass (strand 11). The iron contribution was included assuming infinite permeability. In part two we include results of a 3D representation of the magnetic field inside the bore. The complete analysis, for which a brief description has been included here, is described elsewhere. This form for presenting the field is suitable for interfacing with other codes that make use of the 3D field components (particle tracking and stability). 69 figs.
Date:
April 29, 1991
Creator:
Caspi, S.; Helm, M. & Laslett, L.J.
Object Type:
Report
System:
The UNT Digital Library
Full scale field test of the in situ air stripping process at the Savannah River integrated demonstration test site
Under sponsorship from the US Department of Energy, technical personnel from the Savannah River Laboratory (SRL) and other DOE laboratories, universities and private industry have completed a full scale demonstration of environmental remediation using horizontal wells. This demonstration was performed as Phase I of an Integrated Demonstration Project designed to evaluate innovative remediation technologies for environmental restoration of sites contaminated with organic contaminants. The demonstration utilized two directionally drilled horizontal wells to deliver gases and extract contaminants from the subsurface. The resulting in situ air stripping process was designed to remediate soils and sediments above and below the water table as well as groundwater contaminated with volatile organic contaminants. The 139 day long test successfully removed volatile chlorinated solvents from the subsurface using the two horizontal wells. One well, approximately 300 ft (90m) long and 165 ft (50m) deep drilled below a contaminant plume in the groundwater, was used to inject air and strip the contaminants from the groundwater. A second horizontal well, approximately 175 ft (53m) long and 75 ft (23m) deep in the vadose zone, was used to extract residual contamination in the vadose zone along with the material purged from the groundwater. Pretest and posttest characterization data …
Date:
June 29, 1991
Creator:
Looney, B. B.; Hazen, T. C.; Kaback, D. S. & Eddy, C. A.
Object Type:
Report
System:
The UNT Digital Library
[Paula Pressley named Executive Director of Gay Games IV]
A group of documents pertaining to the Gay Games IV announcing Paula Pressley as the Executive Director of the event, selecting the winner of the official Gay Games logo, and the international planning conference.
Date:
October 29, 1991
Creator:
unknown
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Tulia Herald (Tulia, Tex.), Vol. 83, No. 35, Ed. 1 Thursday, August 29, 1991
Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.
Date:
August 29, 1991
Creator:
Reynolds, Jim
Object Type:
Newspaper
System:
The Portal to Texas History
The theory of High Energy Collision Processes
This report briefly discusses research in proton-antiproton interactions and the standard model. (LSP)
Date:
November 29, 1991
Creator:
Wu, T. T.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Arlington care fire]
B-roll video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Teardrop]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Albright indict]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Teardrop]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Albright indict]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Designer drugs]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Weather]
B-roll video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.
Date:
January 29, 1991, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Good Friday]
Video footage from the KXAS-TV television station in Fort Worth, Texas, covering a news story.
Date:
March 29, 1991, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Computational simulations of plasma flow switches and imploding loads
The Procyon system in the Los Alamos Trailmaster foil implosion project is intended to produce soft x-ray radiation by delivering about 1 MJ of kinetic energy to an imploding plasma liner. The final switching stage of this system will be a Plasma Flow Switch (PFS) which delivers current to the cylindrical foil load. 1-D and 2-D simulations are now being conducted to examine: the initiation of the PFS plasma: the dynamics of the PFS and its switching efficiency; the load implosion and resulting radiation output. Considered here, for the PFS and imploding load, are the effects of electrode walls, perturbations, and radiation. Comparisons with experiments (using the 1.5 MJ Pegasus capacitor bank) are also described. 5 refs., 6 figs.
Date:
May 29, 1991
Creator:
Peterson, D. L.; Bowers, R. L.; Brownell, J. H.; Greene, A. E. & Roderick, N. F.
Object Type:
Article
System:
The UNT Digital Library
Calculations of bottom quark production at hadron colliders
This thesis studies Monte Carlo simulations of QCD heavy flavor production processes (p{bar p} {yields} Q({anti Q})X) at hadron colliders. ISAJET bottom quark cross-sections are compared to the O({alpha} {sub s}{sup 3}) perturbative calculation of Nason, Dawson, and Ellis. These Monte Carlo cross-sections are computed from data samples which use different parton distribution functions and physics parameters. Distributions are presented in the heavy quark's transverse momentum and rapidity. Correlations in rapidity and azimuthal angle are computed for the heavy flavor pair. Theory issues which arise are the behavior of the cross-section at low and high values of transverse momentum and the treatment of double counting problems in the flavor excitation samples. An important result is that ISAJET overestimates bottom quark production cross-sections and K factors. These findings are relevant for estimates of rates and backgrounds of heavy floor events.
Date:
June 29, 1991
Creator:
Kuebel, D.
Object Type:
Report
System:
The UNT Digital Library
Models of fragmentation phenomena based on the symmetric group S sub n and combinational analysis
Various models for fragmentation phenomena are developed using methods from permutation groups and combinational analysis. The appearance and properties of power laws in these models are discussed. Various exactly soluble cases are studied.
Date:
January 29, 1991
Creator:
Mekjian, A. Z. & Lee, S. J.
Object Type:
Report
System:
The UNT Digital Library
Direct, experimental evidence of the Fermi surface in YBa sub 2 Cu sub 3 O sub 7-x
We report new measurements of the electron-positron momentum spectra of YBa{sub 2}Cu{sub 3}O{sub 7-x} performed with ultra-high statistical precision. These data differ from previous results in two significant respects: They show the D{sub 2} symmetry appropriate for untwinned crystals and, more importantly, they show unmistakable, statistically significant, discontinuities that are evidence of a major Fermi surface section. These results provide a partial answer to a question of special significance to the study of high temperature superconductors i.e. the distribution of the electrons in the material, the electronic structure. Special consideration has been given both experimentally and theoretically to the existence and shape of a Fermi surface in the materials and to the superconducting gap. There are only three experimental techniques that can provide details of the electronic structure at useful resolutions. They are angular correlation of positron annihilation radiation, ACAR, angle resolved photo emission, PE, and de Haas van Alphen measurements. 11 refs., 4 figs.
Date:
April 29, 1991
Creator:
Haghighi, H.; Kaiser, J. H.; Rayner, S. L.; West, R. N.; Liu, J. Z.; Shelton, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Final Report of Investigation of the Acoustic Decay Instability in Laser Plasma Interaction
we have made extensive studies of the Ion Acoustic Decay Instability (IADI) in laser-produced plasmas using the Janus (Phoenix) laser at LLNL. We found that the threshold is quite low and that, in planar plasmas, it can be reduced to homogeneous-plasma, collisional values. These observations are consistent with the plasma-density profiles calculated by hydrodynamic simulations using the LASNEX computer code run with a flux limiter of f = 0.1. We have designed experiments to study the IADI in larger plasmas using the Nova laser. 2 refs., 1 fig.
Date:
July 29, 1991
Creator:
Young, P.; Drake, P.; Estabrook; Mizuno, K. & De Groot, J.S.
Object Type:
Report
System:
The UNT Digital Library
Savannah River Site computing architecture
A computing architecture is a framework for making decisions about the implementation of computer technology and the supporting infrastructure. Because of the size, diversity, and amount of resources dedicated to computing at the Savannah River Site (SRS), there must be an overall strategic plan that can be followed by the thousands of site personnel who make decisions daily that directly affect the SRS computing environment and impact the site's production and business systems. This plan must address the following requirements: There must be SRS-wide standards for procurement or development of computing systems (hardware and software). The site computing organizations must develop systems that end users find easy to use. Systems must be put in place to support the primary function of site information workers. The developers of computer systems must be given tools that automate and speed up the development of information systems and applications based on computer technology. This document describes a proposal for a site-wide computing architecture that addresses the above requirements. In summary, this architecture is standards-based data-driven, and workstation-oriented with larger systems being utilized for the delivery of needed information to users in a client-server relationship.
Date:
March 29, 1991
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Saturation and kinetic issues for optical-field-ionized plasma x-ray lasers
Lasing between excited states and the ground state following optical-field ionization is studied. Saturation of an x-ray laser when the lower lasing level is a ground state of a H-like or Li-like ion is discussed. Efficiencies of 10{sup {minus}5} to 10{sup {minus}4} are calculated for the 3d{sub 5/2}--2p{sub 3/2} transition at 98 {Angstrom} in Li-like Ne. The assumption that the fine-structure levels are populated according to their statistical weights is shown to be justified through comparisons with calculations using a detailed atomic model. The effect of saturation by a given fine-structure transition on the populations of the fine-structure levels is analyzed. 4 refs., 2 figs.
Date:
April 29, 1991
Creator:
Eder, D.C.; Amendt, P.; Rosen, M.D.; Nash, J.K. & Wilks, S.C.
Object Type:
Article
System:
The UNT Digital Library
A non-intrusive beam power monitor for high power pulsed or continuous wave lasers
A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relative to a modulated control signal through the photodiode monitor.
Date:
May 29, 1991
Creator:
Hawsey, R. A. & Scudiere, M. B.
Object Type:
Patent
System:
The UNT Digital Library
Cherokeean/Herald (Rusk, Tex.), Vol. 143, No. 30, Ed. 1 Thursday, August 29, 1991
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
August 29, 1991
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Texas Register, Volume 16, Number 89, Pages 6877-6959, November 29, 1991
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
November 29, 1991
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History