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1 - 24 of
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[Japanese Garden Stepping Stones #2]
Photograph of stepping stones in the Japanese Garden pond at the Fort Worth Botanic Garden. The round and small stepping stones sit in the water, and across from them grow drooping bushes and trees.
Date:
[..1982-11]
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[News Clip: Various news stories]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas.
Date:
{1982-07-13,1983-10}
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
A 0. 4 mm Interferometer System Using Dielectric Waveguide
A 0.4 mm submillimeter-wave, phase-modulated polarimeter/interferometer is used for simultaneous time-dependent measurement of line-averaged electron density and poloidal field-induced Faraday rotation along chords of the plasma column in ISX-B tokamak. Heterodyna detection and hollow dielectric waveguide are utilized to achieve the high sensitivity required for the multichord equipment.
Date:
January 1, 1982
Creator:
Hutchinson, D. P.; Ma, C. H.; Staats, P. A. & Vander Sluis, K. L.
Object Type:
Article
System:
The UNT Digital Library
0/sup -/ to 0/sup +/ beta decay in A = 16
Techniques and results of the measurement of the beta-decay rate of the first excited state of /sup 16/N to the ground state of /sup 16/O are reported. Energy levels involved in the decay are shown, and the /sup 16/N 0/sup -/ beta decay branching ration is given. (WHK)
Date:
January 1, 1982
Creator:
Gagliardi, C.; Garvey, G. T.; Wrobel, J. R. & Freedman, S. J.
Object Type:
Article
System:
The UNT Digital Library
1-D hybrid code for FRM start-up
A one-D hybrid has been developed to study the start-up of the FRM via neutral-beam injection. The code uses a multi-group numerical model originally developed by J. Willenberg to describe fusion product dynamics in a solenoidal plasma. Earlier we described such a model for use in determining self-consistent ion currents and magnetic fields in FRM start-up. However, consideration of electron dynamics during start-up indicate that the electron current will oppose the injected ion current and may even foil the attempt to achieve reversal. For this reason, we have combined the multi-group ion (model) with a fluid treatment for electron dynamics to form the hybrid code FROST (Field Reversed One-dimensional STart-up). The details of this merger, along with sample results of operation of FROST, are given.
Date:
January 1, 1982
Creator:
Stark, R. A. & Miley, G. H.
Object Type:
Article
System:
The UNT Digital Library
2. 6/sup 0/K refrigeration system for CBA magnet testing
The superconducting magnets for the accelerator's rings will be cooled by a forced flow supercritical helium system from a central refrigeration plant. The design temperature for these magnets varies from 2.6 to 3.8/sup 0/K depending on a magnet's location in the ring. This paper describes the forced flow cooling system for testing a prototype magnet near 2.6/sup 0/K; this lowest temperature being of special interest to evaluate magnet quench protection. The test forced flow cooling system uses a three-stage approach, including an ejector pumped bath, similar to a cycle described previously. The coolant exists at 3.8/sup 0/K from these first stages and is then cooled further in a 64 cm diameter by 3 m high shielded liquid helium dewar. The supercritical helium gas passes through a submerged copper coil in this bath which is pumped to a pressure of 65 mm absolute by a screw compressor system. Temperatures are measured by thermistors located in the gas stream, and also embedded in the magnet coil.
Date:
January 1, 1982
Creator:
Bamberger, Joseph A.
Object Type:
Article
System:
The UNT Digital Library
2-D Eulerian hydrodynamics with fluid interfaces, self-gravity and rotation
The purpose of this paper is to describe in detail the numerical approach we have developed over the past five years for solving 2-dimensional gas-dynamical problems in astrophysics involving inviscid compressible flow, self-gravitation, rotation, and fluid instabilities of the Rayleigh-Taylor and Kelvin-Helmholtz types. The computer code to be described has been applied most recently to modeling jets in radio galaxies (Norman et al. 1981, 1982) and is an outgrowth of a code developed for studying rotating protostellar collapse (Norman, Wilson and Barton 1980; Norman 1980). This basic methodology draws heavily on the techniques and experience of James R. Wilson and James M. LeBlanc of the Lawrence Livermore National Laboratory, and thus the code is designed to be a general purpose 2-D Eulerian hydrocode, and is characterized by a high degree of simplicity, robustness, modularity and speed. Particular emphases of this article are: (1) the recent improvements to the code's accuracy through the use of vanLeer's (1977) monotonic advection algorithm, (2) a discussion of the importance of what we term consistent advection, and (3) a description of a numerical techique for modeling dynamic fluid interfaces in multidimensional Eulerian calculations developed by LeBlanc. 23 refs., 14 figs.
Date:
January 1, 1982
Creator:
Norman, M.L. & Winkler, K.H.A.
Object Type:
Article
System:
The UNT Digital Library
S = -2 dibaryons and hypernuclei
Future prospects for the exploration of doubly strange hypernuclear systems are evaluated. Such systems may be produced via the double strangeness exchange reactions (K/sup -/,K/sup +/) or (K/sup -/,K/sup 0/) on nuclear targets. Theoretical estimates are given of the formation cross sections for Xi/sup -/ hypernuclear states via the one-step K/sup -/p ..-->.. K/sup +/Xi/sup -/ process, or discrete states of the ..lambda lambda.. hypernucleus in the two step reaction K/sup -/p ..-->.. ..pi../sup 0/..lambda.. followed by ..pi../sup 0/p ..-->.. K/sup +/..lambda... Recently, there has been much discussion of six quark (dibaryon) states in the Bag Model. Arguments are given which indicate that the (K/sup -/,K/sup +/) reaction on light nuclear targets (ex. /sup 3/He) affords a very promising way of producing the lowest-lying S = -2 dibaryon (called the H).
Date:
January 1, 1982
Creator:
Dover, C.B.
Object Type:
Article
System:
The UNT Digital Library
3-D solution of flow in an infinite square array of circular tubes by using boundary-fitted coordinate system
Heat transfer and fluid flow over circular tubes have wide applications in the design of heat exchangers and nuclear reactors. However, it is often difficult to accurately calculate the detailed velocity and temperature distributions of the flow because of the complex geometry involved in the analysis, and a lack of an appropriate coordinate system for the analysis. Boundary conditions on the surfaces of the tubes are often interpolated. This interpolation process introduces inaccuracy. To overcome this difficulty, the present study used the technique of the boundary-fitted coordinate system. In this technique, all the physical boundaries are transformed into constant coordinate lines in the transformed coordinates. Therefore, the boundary conditions can be specified on the grid points without interpolation.
Date:
January 1, 1982
Creator:
Chen, B. C. J.; Chien, T. H.; Sha, W. T. & Kim, J. H.
Object Type:
Article
System:
The UNT Digital Library
A = 4 0/sup +/ - 1/sup +/ binding-energy difference
The A = 4 ..lambda..-hypernuclei provide a rich source of information about the s-wave properties of the fundamental hyperon-nucleon (YN) force as well as offer a unique opportunity to investigate the complications that arise in calculations of the properties of bound systems in which one baryon (here the ..lambda..) with a given isospin couples strongly to another (the ..sigma..) with a different isospin. The ..lambda../sup 4/H - ..lambda../sup 4/He isodoublet ground-state energies are not consistent with a charge symmetry hypothesis for the YN interaction. The (spin-flip) excitation energies are quite sensitive to the ..lambda..N - ..sigma..N coupling of the YN interaction. In particular, when one represents the free YN interaction in terms of one-channel effective ..lambda..N potentials, the resulting 0/sup +/ (ground) state and 1/sup +/ (excited) spin-flip state are inversely ordered in terms of binding energies, the 1/sup +/ state being more bound. It is the ..sigma.. suppression that results from the reduced strength of the ..lambda..N - ..sigma..N off-diagonal coupling potential when the trinucleon core is restricted to isospin-1/2 which we study here. We find this spin-isospin suppression of the ..lambda..-..sigma.. conversion, which is due to the composite nature of the nuclear cores of the ..lambda../sup 4/H and …
Date:
January 1, 1982
Creator:
Gibson, B. F. & Lehman, D. R.
Object Type:
Article
System:
The UNT Digital Library
[21.06 Bar Flyer]
Flyer from the Dallas Gay Alliance announcing a two-for-one special at a bar in celebration of the 1982 court ruling of the 21.06 law as unconstitutional.
Date:
1982
Creator:
Dallas Gay Alliance
Object Type:
Poster
System:
The UNT Digital Library
[21.06 Trial]
Photograph of Jim Barber (left), Don Baker (middle) and Bill Nelson (right) seated behind a table during the 21.06 trial in 1982. Unidentified persons are visible from the back, in the foreground.
Date:
1982
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[The 777 Main Street skyscraper in Fort Worth]
Photograph of the 777 Main Street skyscraper in Fort Worth at the corner of E 7th and Main. The glass building has multiple levels with an uneven roof line. Each section of the building, going away from the corner facing the camera gets higher and wider, creating a pyramid effect. It reflects the buildings that are across the street, ad a stoplight sits on the corner of the sidewalk in front of it.
Date:
1982
Creator:
Williams, Byrd M. (Byrd Moore), IV, 1951-
Object Type:
Photograph
System:
The UNT Digital Library
1980 survey and evaluation of utility conservation, load management, and solar end-use projects. Volume 3: utility load management projects. Final report
The results of the 1980 survey of electric utility-sponsored energy conservation, load management, and end-use solar energy conversion projects are described. The work is an expansion of a previous survey and evaluation and has been jointly sponsored by EPRI and DOE through the Oak Ridge National Laboratory. There are three volumes and a summary document. Each volume presents the results of an extensive survey to determine electric utility involvement in customer-side projects related to the particular technology (i.e., conservation, solar, or load management), selected descriptions of utility projects and results, and first-level technical and economic evaluations.
Date:
January 1, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
1982-83 Calendar of Events
A few pages listing the planned events for the Junior Black Academy of Arts and Letters for years 1982-1983.
Date:
1982/1983
Creator:
Junior Black Academy of Arts and Letters
Object Type:
Text
System:
The UNT Digital Library
1982 analyses and reports: equipment availability report; component cause code report; and equipment availability report
This equipment availability report (1973 to 1982, 1982) presents statistical information on the performance of the major types of generating units and their major component groups. (DLC)
Date:
January 1, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
1982 engineering conference on reliability for the electrical power industry
Emergency onsite ac power systems at nuclear power plants are a major concern in plant risk assessments because of the relatively large frequency of loss of offsite power and the dependence of most other safety systems on ac power. Detailed reviews of onsite ac power system designs and reviews of experience with diesel generators at US nuclear power plants form the basis of system reliability analyses that show significant improvements in reliability can be obtained at moderate cost for some plants. Onsite ac power system modifications analyzed include procedural modifications, minor equipment modifications and major equipment additions. Relative costs of various modifications are compared with associated system reliability improvements.
Date:
January 1, 1982
Creator:
Campbell, D. J.; Arendt, J. S.; Battle, R. E. & Baranowsky, P. W.
Object Type:
Article
System:
The UNT Digital Library
1D thermonuclear model for x-ray transients
The thermonuclear evolution of a 1.41 M solar mass neutron star, with a radius of 14.3 km, accreting various mixtures of hydrogen, helium, and heavy elements at rates of 10/sup -11/ to 10/sup -10/ M solar mass/yr is examined, in conjunction with S.E. Woosley and T.A. Weaver, using a one-dimensional numerical model. We have ignored any effects due to general relativity or magnetic fields. Two cases shall be discussed. In both models, the accretion rate is such that the hydrogen shell burns to helium in steady state, with the hydrogen burning stabilized by the ..beta..-limited CNO cycle. A thick helium shell is produced, which is eventually ignited under extremely degenerate conditions, producing a thermonuclear runaway.
Date:
January 1, 1982
Creator:
Wallace, R. K.
Object Type:
Article
System:
The UNT Digital Library
23rd Annual Report
The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Date:
January 1982
Creator:
United States. Advisory Commission on Intergovernmental Relations.
Object Type:
Book
System:
The UNT Digital Library
AACR 2 Headings: A Five-Year Projection of Their Impact on Catalogs
Text providing an overview of research and results regarding the implementation of AACR2 (Anglo-American Cataloging Rules, Second Edition) and the effects on existing catalogs. It includes an overview of the problem and hypotheses, literature review, general research method, description of study libraries, differences found in samples between AACR 2 and pre-AACR 2 headings, conflicting headings found in catalogs, OCLC (Online Computer Library Center) and AACR 2 headings, summary and conclusions, and related appendices. Index starts on page 143.
Date:
1982
Creator:
Taylor, Arlene G., 1941-
Object Type:
Book
System:
The UNT Digital Library
[Abilene City Ordinances: 1982]
Ledger containing ordinances/resolutions passed by the city of Abilene, Texas from February 1982 to December 1982.
Date:
1982
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
[Abilene City Resolutions: 1982]
Ledger containing resolutions passed by the city of Abilene, Texas from March 1982 to December 1982.
Date:
1982
Creator:
Abilene (Tex.)
Object Type:
Legal Document
System:
The Portal to Texas History
Abilene Philharmonic Playbill: January 26-March 2, 1982
Program for an Abilene Philharmonic concert that ran from January 26th to March 2nd (third and fourth symphony concerts) during the 32nd season. It includes information about the pieces performed, artists and musicians, and advertising from local companies.
Date:
January 1982
Creator:
Abilene Philharmonic
Object Type:
Pamphlet
System:
The Portal to Texas History
Absolutely calibrated soft-x-ray streak camera for laser-fusion applications
The intensity output of a soft-x-ray streak camera was calibrated (SXRSC) in order to make absolute flux measurements of x rays emitted from laser-produced plasmas. The SXRSC developed at LLNL is used to time-resolve x-ray pulses to better than 20 ps. The SXRSC uses a Au photocathode on a thin carbon substrate which is sensitive to x rays from 100 eV to greater than 10 keV. Calibrations are done in the dynamic mode using a small laser-produced x-ray source. The SXRSC is calibrated by comparing its integrated signal to the output of calibrated x-ray diodes monitoring the source strength. The measured SXRSC response is linear over greater than two orders of magnitude. Using these calibrations, absolute intensities can be measured to an accuracy of +-30%.
Date:
January 1, 1982
Creator:
Kauffman, R.L.; Medecki, H. & Stradling, G.
Object Type:
Article
System:
The UNT Digital Library