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Results:
1 - 24 of
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[1 1/2 Story Stuccoed Building]
Photograph of the 1 1/2 Story Stuccoed Building in Rio Grande City, Texas.
Date:
January 1980
Creator:
Hardy, Daniel
Object Type:
Photograph
System:
The Portal to Texas History
[1 1/2 Story, (With arched-crenelated pediment)]
Photograph of the 1 1/2 Story (located at 2nd Street) in Rio Grande City, Texas.
Date:
January 1980
Creator:
Hardy, Daniel
Object Type:
Photograph
System:
The Portal to Texas History
1,4-diphenylbutadiyne as a potential tritium getter
Research on the acetylene compound 1,4-diphenylbutadiyne is an effort to develop an air-operative tritium gas scavenger. T/sub 2/ adds to the acetylene bond of the organic in the presence of a metal catalyst. The catalyst also stimulates the oxidation reaction as well. The butadiyne compound has shown good reaction efficiency at 300 ppM T/sub 2/ in static dry air. At this concentration 75% of the scavenged tritium was in the organic. This work has expanded to the investigation of liquid acetylenes, metal acetylene complexes, organometallics and acetylene based alcohols. The best of these compounds has gettered 100% of 10 to 500 ppM T/sub 2/ for both static and dynamic air flow conditions.
Date:
October 1, 1980
Creator:
Miller, H. H.; Bissell, E. E.; Tsugawa, R. T. & Souers, P. C.
Object Type:
Article
System:
The UNT Digital Library
1-MWE Heat Exchangers for OTEC Final Design Report
The design of a 1 MWe OTEC heat exchanger is documented, including the designs of the evaporator and associated systems, condenser, instrumentation, and materials for corrosion/erosion control and fabrication processes. (LEW)
Date:
June 19, 1980
Creator:
Sprouse, A.M.
Object Type:
Report
System:
The UNT Digital Library
1/N
There exist families of field theories with symmetry group SO(N) (or SU(N)) that become simpler as N becomes larger. More precisely, the solutions to these theories possess an expansion in powers of 1/N. This expansion is the subject of these lectures. The 1/N expansion can be used to analyze model field theories. The 1/N expansion is developed for phi/sup 4/ theory and applied to two two-dimensional models with similar combinatoric structures, the Gross-Neveu model and the CP/sup N-1/ model. These models display (in the leading 1/N approximation) such interesting phenomena as asymptotic freedom, dynamical symmetry breaking, dimensional transmutation, and non-perturbative confinement. It is possible that the 1/N expansion, with N the number of colors, might fruitfully be applied to quantum chromodynamics. Unfortunately, it is not possible to make a decisive test of the approximation, because no one knows how to compute even the first term in the expansion in closed form. However, it is possible to argue that this first term, whatever its detailed form, has many properties that are also shared by the real world, and which are otherwise underived from field theory. These include the saturation of scattering amplitudes by an infinite number of narrow resonances, the essential …
Date:
March 1, 1980
Creator:
Coleman, S.
Object Type:
Report
System:
The UNT Digital Library
[1-Story Commercial Building]
Photograph of the 1-Story Commercial Building in Brownsville, Texas.
Date:
November 1980
Creator:
Kennedy, Carol & Flory, Linda C.
Object Type:
Photograph
System:
The Portal to Texas History
[2 copies of Motion to Quash Supoena (filed 8/7/80) and notarized subpoena from state of Texas to Don Maison]
Two paperclipped copies of a "Motion to Quash Supoena" filed by Donald J. Maison on August 7, 1980 in the State of Texas v. Richard Craig Schwiderski case, as well as a notarized subpoena from State of Texas to Donald J. Maison.
Date:
August 7, 1980
Creator:
State of Texas
Object Type:
Text
System:
The UNT Digital Library
[3 Letters from Donald J. Maison]
Copies of three letters from Donald J. Maison: a carbon copy of a letter from Maison to Chief Prosecutor (dated April 16, 1980), copy of a letter from Maison to Steve Tokoley (dated April 7, 1980), and carbon copy of letter from Maison to Bill Arnold (dated March 26, 1980).
Date:
April 16, 1980
Creator:
Maison, Donald J.
Object Type:
Letter
System:
The UNT Digital Library
[4 Alarm Fire at Good and Bryan Street]
Photograph of a four-alarm fire at Good and Bryan Streets. Firefighters stand on the ground with hoses to put out the flames, and a large cloud of smoke is coming off the building. A firetruck is visible in the left foreground.
Date:
1980~/1989~
Creator:
Dallas (Tex.). Fire Department.
Object Type:
Photograph
System:
The Portal to Texas History
4 K to 20 K Rotational-Cooling Magnetic Refrigerator Capable of 1-Mw to >1-W Operation
The low-temperature, magnetic entropy of certain single-crystal paramagnetic materials, such as DyPO/sub 4/, changes dramatically as the crystal rotates in a magnetic field. A new magnetic refrigerator design based on the anisotropic nature of such materials is presented. The key advantages of the rotational-cooling concept are (1) a single, rotary motion is required, (2) magnetic field shaping is not a problem because the entire working material is in a constant field, and (3) the refrigerator can be smaller than comparable magnetic refrigerators because the working material is entirely inside the magnet at all times. The main disadvantage of the rotational-cooling concept is that small-dimension single crystals are required.
Date:
February 1, 1980
Creator:
Barclay, J. A.
Object Type:
Report
System:
The UNT Digital Library
4. pi. physics. [/sup 40/Ar + KCl, 0. 4 to 1. 8 GeV/A]
Exclusive ..pi../sup -/ and charged-particle production in collisions of /sup 40/Ar on KCl are studied at incident energies from 0.4 to 1.8 GeV/A. The correlation between the ..pi../sup -/ and the total charged particle multiplicity confines the reaction along a narrow ridge with no exotic islands of pion production. For high multiplicities the system reaches the total disintegration of target and projectile into singly charged fragments and pions. Every 200 MeV/A datum was taken with a central and inelastic trigger. For central collisions the mean ..pi../sup -/ multiplicity increases linearly with the bombarding energy with no marked discontinuities due to the ..delta..(3,3) resonance. At 1.8 GeV/A evidence for nonthermal ..pi../sup -/ production in central collisions is found. The total c.m. energy in ..pi../sup -/ shows linear dependence on the ..pi../sup -/ multiplicity with a slope of epsilon = 300 MeV/..pi../sup -/. Strange particle production in the central collision of 1.8 GeV/A Ar on KCl is seen. 8 figures.
Date:
March 1, 1980
Creator:
Sandoval, A.
Object Type:
Article
System:
The UNT Digital Library
10-MWe solar-thermal central-receiver pilot plant, solar-facilities design integration: plant-support subsystem procurement documentation (RADL Item 7-44D)
Purchase specifications are given for the specific long lead items to be procured for the 10 MWe Solar Pilot Plant. The hardware is grouped into two categories: 480 Volt Load Center and 480 Volt Motor Control Centers; and Power, Control and Instrumentation Cable. The purchase orders for each procurement are included. Need dates for each item are identified. (LEW)
Date:
September 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
10-MWe solar-thermal central-receiver pilot plant, solar-facilities design integration: system integration laboratory test plan (RADL item 6-4)
A general demonstration test plan is provided for the activities to be accomplished at the Systems Integration Laboratory. The Master Control System, Subsystem Distributed Process Control, Representative Signal Conditioning Units, and Redline Units from the Receiver Subsystem and the Thermal Storage Subsystem and other external interface operational functions will be integrated and functionally demonstrated. The Beckman Multivariable Control Unit will be tested for frequency response, static checks, configuration changes, switching transients, and input-output interfaces. Maximum System Integration Laboratory testing will demonstrate the operational readiness of Pilot Plant controls and external interfaces that are available. Minimum System Integration Laboratory testing will be accomplished with reduced set of hardware, which will provide capability for continued development and demonstration of Operational Control System plant control application software. Beam Control System Integration Laboratory testing will demonstrate the operational readiness of the Beam Control System equipment and software. (LEW)
Date:
October 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
17 wells: lithologic logs and temperature depth data
None
Date:
January 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
25 MV tandem accelerator at Oak Ridge
A new heavy-ion accelerator facility is under construction at the Oak Ridge National Laboratory. A brief description of the scope and status of this project is presented with emphasis on the first operational experience with the 25 MV tandem accelerator.
Date:
January 1, 1980
Creator:
Jones, C. M.
Object Type:
Article
System:
The UNT Digital Library
30 MJ superconducting coil design and fabrication. Report No. GA-A16104. [NbTi]
The Bonneville 30 MJ superconducting stabilizing coil is being constructed by General Atomic under contract to LASL. Upon completion of the design, General Atomic began the procurement of materials and is now ready to start coil winding.
Date:
September 1, 1980
Creator:
Purcell, J. R.
Object Type:
Report
System:
The UNT Digital Library
30-MJ superconducting magnetic energy storage for BPA transmission line stabilizer
The Bonneville Power Administration operates the transmission system that joins the Pacific Northwest and southern California. A 30-MJ (8.4-kWh) Superconducting Magnet Energy Storage (SMES) unit with a 10-MW converter can provide system damping for low frequency oscillations. The unit is scheduled to operate in 1982. Progress during FY 80 is described. The conductor has been fully tested both electrically and mechanically, all of the necessary copper and superconductor has been purchased, and the first production lengths of cable have been fabricated. All major components of the electrical and cryogenic systems except the gas recovery unit have been received, but the refrigerator, converter, and one transformer were damaged during shipment. The dewar is being procured, and the coil support system has been designed. Support work at LASL to prepare for subsystem testing is nearly complete.
Date:
January 1, 1980
Creator:
Schermer, R. I.
Object Type:
Article
System:
The UNT Digital Library
[43-4 WASP Group Photo]
Photograph of a group of nineteen WASP, some in uniform, posing in tow rows of chairs fro a reunion photo. The woman in the center of the front row is holding a small sign with the group's class number, 43-4. A floral wallpapered wall can be seen in the background. Several notes handwritten on the back can be seen listing the names of some of the group members. The notes read, "Vi Thurn ?, Helen Snapp, Fran Sargent, Virginia Watry, Me, Mary Clifford, Virginia Street, Joanne Trebtoske, Madge Rutherford, Connie Llewellyn, Deedee Johnson, Betty Naffz, Lyda Dunham, Ruth Underwood, Edna Pedlar, Mary Edith Engle, Marge Moore, Helen Schaefer, Liz Pierce". A second note reads, "Sept 19, 1980 WASP Reunion at Dutch Inn, Buena Vista, Fla".
Date:
September 19, 1980
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
50 MeV polarimeter
A description is given of the construction, operation and calibration of the 50 MeV polarimeter which was used at the ZGS. The dependence of the observed counts on various parameters, including the beam polarization, beam intensity and the solid angle in the two polarimeter arms is also discussed.
Date:
April 15, 1980
Creator:
Spinka, H.
Object Type:
Report
System:
The UNT Digital Library
60 GHz gyrotron development program. Quarterly report No. 4, April-June 1980
The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design and early procurement and construction phases of this program are discussed.
Date:
January 1, 1980
Creator:
Shively, J.F.; Grant, T.J.; Stone, D.S.; Symons, R.S. & Wendell, G.E.
Object Type:
Report
System:
The UNT Digital Library
60 GHz gyrotron development program. Quarterly report No. 5, July-September 1980
The objective of this program is to develop a microwave oscillator capable of producing 200 kW of CW output power at 60 GHz. The use of cyclotron resonance interaction is being pursued. The design, procurement and early construction phases of this program are discussed.
Date:
January 1, 1980
Creator:
Shively, J.F.; Grant, T.J.; Nordquist, A.L.; Stone, D.S. & Wendell, G.E.
Object Type:
Report
System:
The UNT Digital Library
64 kW concentrator Photovoltaics Application Test Center. Volume. Final report
Kaman Sciences Corporation has designed a 64 kW Concentrating Photovoltaic Applications Test Center (APTEC). The APTEC employs a combined concentrating photovoltaic array in a total energy system application for load sharing the electric and thermal demands of a large computer center with the interfaced electric and natural gas utility. The photovoltaic array is composed of two-axis tracking heliostats of Fresnel lens concentrating, silicon solar cell modules. The modules are cooled with a fluid which transfers heat to a ground coupled heat sink/storage unit for subsequent use in meeting the computer center's thermal load demand. The combined photovoltaic power system shares basic components - a power conditioning unit, batteries and thermal conditioning equipment - with the electric and natural gas utility service, improving the computer center's operating availability time and displacing a portion of the fossil fuel required to power the computer center with solar energy. The detailed system design is reported.
Date:
June 1, 1980
Creator:
Jardine, D.M. & Jones, D.W.
Object Type:
Report
System:
The UNT Digital Library
96
Access:
Use of this item is restricted to the UNT Community
Recording of Sten Hanson's 96. "According to Amnesty International, there are 96 countries in the world that have political prisoners. In most of these countries, there is clearly physical or mental torture that is punishable by law and unlawful killings." Sound material includes sounds of doors shutting, locks locking, bells, ringing, etc.
Date:
1980
Creator:
Hanson, Sten, 1936-2013
Object Type:
Sound
System:
The UNT Digital Library
124 E 170th St
Access:
Use of this item is restricted to the UNT Community
Recording William Ortiz's 124 E 170th St. (for electronic tape, narrator, and percussion). It is a mixed electroacoustic work depicting the Puerto Rican urban experiences the United States: the struggle against the agony of the ghetto and against the imposition of a crushing colonial state of mind. The piece is a summons to awake from the broken English dream and assume the Puerto Rican and Latin American essence that belongs to us. The text was written by two Puerto Rican poets living in New York City: Pedro Pietri and Sandra Esteves. The music largely makes use of Afro-Caribbean rhythms, and involves theatrics.
Date:
1980
Creator:
Ortiz, William
Object Type:
Sound
System:
The UNT Digital Library