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286
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271
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70
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42
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31
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27
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27
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23
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Oklahoma Publishing Company Photography Collection
596
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517
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393
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245
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210
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209
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195
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97
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Results:
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1-2 GeV synchrotron radiation facility at Lawrence Berkeley Laboratory
The Advanced Light Source (ALS), a dedicated synchrotron radiation facility optimized to generate soft x-ray and vacuum ultraviole (XUV) light using magnetic insertion devices, was proposed by the Lawrence Berkeley Laboratory in 1982. It consists of a 1.3-GeV injection system, an electron storage ring optimized at 1.3 GeV (with the capability of 1.9-GeV operation), and a number of photon beamlines emanating from twelve 6-meter-long straight sections, as shown in Fig. 1. In addition, 24 bending-magnet ports will be avialable for development. The ALS was conceived as a research tool whose range and power would stimulate fundamentally new research in fields from biology to materials science (1-4). The conceptual design and associated cost estimate for the ALS have been completed and reviewed by the US Department of Energy (DOE), but preliminary design activities have not yet begun. The focus in this paper is on the history of the ALS as an example of how a technical construction project was conceived, designed, proposed, and validated within the framwork of a national laboratory funded largely by the DOE.
Date:
October 1, 1985
Creator:
Berkner, K.H.
Object Type:
Article
System:
The UNT Digital Library
[300 block of Ave F]
Photograph of the 300 block of Ave F in Johnson City, Texas.
Date:
October 1, 1985
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
300-Element Silicon-Lithium Position-Sensitive Imaging Detector for Angiography
Silicon lithium-drifted (Si(Li)) detectors 150 mm long, 10 mm wide and 5 mm thick with 300 individual elements have been fabricated as imaging detectors for noninvasive studies of human coronary arteries using 33 keV x-rays from a synchrotron radiation beamline. This detector is an extension of earlier work on 30 mm long devices with initially 30 and later 60 elements. The detector fabrication details are discussed highlighting problems in uniform lithium-ion compensation. The device structure is examined and measurements on the interelement impedances presented. Finally an angiograph of the coronary arteries in an excised pig's heart obtained with this 300-element detector is presented. 14 refs., 6 figs.
Date:
October 1, 1985
Creator:
Walton, J. T.; Sommer, H. A.; Thompson, A. C.; Hughes, E. B. & Zeman, H. D.
Object Type:
Article
System:
The UNT Digital Library
18t Resistive Magnet Development. Conceptual Design Second Annual Report
This report documents the work performed on a normal conducting magnet during fiscal year 1985. Emphasis, during the study, was on refinement of the structural design and optimization of the coil current density distribution for either maximum field generation or minimum power consumption. The results have shown that one can generate a 4.4 tesla field using 6.14 megawatts or 3.1 tesla at 1.43 megawatts. The structural design has been modified to stiffen the outer turn of the conductor. The modification was confirmed to be structurally adequate by both analysis and test. 37 figs., 21 tabs.
Date:
October 1, 1985
Creator:
Agarwal, K. L.; Burgeson, J. E.; Gurol, H.; Mancuso, A. & Michels, P. H.
Object Type:
Report
System:
The UNT Digital Library
[1st Evangelical Lutheran Church]
Photograph of the 1st Evangelical Lutheran Church in Galveston, Texas.
Date:
October 1, 1985
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
3Q120 Low Gradient Behaviour
Three 3Q120 magnets--representative of those in the AP 1 line--have been measured with a harmonics probe at MDTF at both low (0-48 A) and high (to >= 400 A). The intent of the measurements was to learn their behavior at the low gradients necessary to transport 8 Gev antiprotons back through the AP 1 line for injection into the Main Ring (and subsequently the superconducting ring--see Ref. 1). Many of the measurements have been preceded by remnant field biasing ramps to 148, 270, 295, or 405 amps to set the remnant field to a standard value. The measurement sequence is then 0,4,8,... 48 amperes (in 4 A steps). The amplitude vs current graph for 0-48 A is visually a straight line and can be fitted via linear regression to a straight line--obtaining a slope and intercept. The residual differences from a straight line can again be plotted vs current and can be reasonably well fit to a second degree polynomial. The smallest set of information that is necessary to tabulate for the operation of AP 1 quadrupoles is the set of currents that correspond to the desired focusing strengths as stipulated by the beam design. Given the parametrization described above, …
Date:
October 1, 1985
Creator:
Wehmann, A.
Object Type:
Report
System:
The UNT Digital Library
3Q120 Low Gradient Behaviour-Companion Report
Three 3Q120 magnets--representative of those in the AP 1 line--have been measured with a harmonics probe at MDTF at both low (0-48 A) and high (to >= 400 A). The intent of the measurements was to learn their behavior at the low gradients necessary to transport 8 Gev antiprotons back through the AP 1 line for injection into the Main Ring. This paper describes some aspects of the measurements that were not included in the main paper, in order to keep the size of the main report reasonably small. It includes as Appendix I a chronology of the measurements made and significant changes made to the measurement apparatus and analysis programs.
Date:
October 1, 1985
Creator:
Wehmann, A.
Object Type:
Report
System:
The UNT Digital Library
5f-band narrowing in UX/sub 3/B compounds: evidence from resonant photoemission. [X = Ru or Rh]
Resonant photoemission at the uranium 5d disorption edge has been used to determine the 5f emission in URu/sub 3/, URh/sub 3/, URu/sub 3/B, and URh/sub 3/B polycrystalline samples. The observed 5f band narrowing (from 2.0 to 1.5 eV as one goes from URu/sub 3/ to URu/sub 3/B, and from 2.8 to 1.1 eV for URh/sub 3/ and URh/sub 3/B respectively) is explained as due to a decrease in the f-d hybridization between uranium and rhodium (ruthenium) atoms.
Date:
October 1985
Creator:
Zolnierek, Z.; Arko, A. J. & Koelling, D. D.
Object Type:
Article
System:
The UNT Digital Library
90th Celebration
Color photograph of the chapel inside of the Danevang Lutheran Church. A woman stands at the front of the chapel near the altar. At the center of the altar is a table on top of which are two lit candlesticks and a candelabra. Above the table hangs a cross. A few rows of pews are visible in the foreground.
Date:
October 1985
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
[90th Homecoming Celebration, Danevang Lutheran Church]
Color photograph of a group of people gathered together for a meal in the mess hall at an unidentified location. Several adults are seated at long banquet tables covered in gingham-patterned table covers; many of them have platefuls of food in front of them. Some concession style windows where food is being served are visible to the left; a few people are lined up to be served. Above the windows is a banner that reads, "Vars' Co!" as well as a few Danish flag decals.
Date:
October 1985
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Accelerators for heavy ion fusion
Large fusion devices will almost certainly produce net energy. However, a successful commercial fusion energy system must also satisfy important engineering and economic constraints. Inertial confinement fusion power plants driven by multi-stage, heavy-ion accelerators appear capable of meeting these constraints. The reasons behind this promising outlook for heavy-ion fusion are given in this report. This report is based on the transcript of a talk presented at the Symposium on Lasers and Particle Beams for Fusion and Strategic Defense at the University of Rochester on April 17-19, 1985.
Date:
October 1, 1985
Creator:
Bangerter, R.O.
Object Type:
Report
System:
The UNT Digital Library
ACTVE News, Volume 16, Number 6, October/November 1985
Newsletter issued by the Advisory Council for Technical-Vocational Education in Texas discussing news, events, and other relevant information related to technical and vocational education for adults in Texas.
Date:
October 1985
Creator:
Advisory Council for Technical-Vocational Education in Texas
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Age, Volume 6, Number 10, October 1985
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
October 1985
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Aging degradation of cast stainless steel
A program is being conducted to investigate the significance of in-service embrittlement of cast-duplex stainless steels under light-water reactor operating conditions. Data from room-temperature Charpy-impact tests for several heats of cast stainless steel aged up to 10,000 h at 350, 400, and 450/sup 0/C are presented and compared with results from other studies. Microstructures of cast-duplex stainless steels subjected to long-term aging either in the laboratory or in reactor service have been characterized. The results indicate that at least two processes contribute to the low-temperature embrittleent of duplex stainless steels, viz., weakening of the ferrite/austenite phase boundary by carbide precipitation and embrittlement of ferrite matrix by the formation of additional phases such as G-phase, Type X, or the ..cap alpha..' phase. Carbide precipitation has a significant effect on the onset of embrittlement of CF-8 and -8M grades of stainless steels aged at 400 or 450/sup 0/C. The existing correlations do not accurately represent the embrittlement behavior over the temperature range 300 to 450/sup 0/C. 18 refs., 13 figs.
Date:
October 1, 1985
Creator:
Chopra, O. K. & Chung, H. M.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 63, No. 234, Ed. 1 Tuesday, October 1, 1985
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 1, 1985
Creator:
Lobell, Joe
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alumni J-TAC, October 1985
Homecoming edition of the Tarleton State University alumni magazine describing related events and other news about university students, staff, and alumni.
Date:
October 1985
Creator:
Tarleton State University
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Analysis of /sup 81/Kr in groundwater using laser resonance ionization spectroscopy
A new analytical technique based on resonant ionization of krypton with a vacuum ultraviolet (VUV) laser source was used to determine low-level /sup 81/Kr concentrations in groundwater. The long half-life (210,000 years) and low concentration (1.3 x 10/sup 3/ /sup 81/Kr atoms per liter of modern water at 10/sup 0/C) make the detection of /sup 81/Kr by radioactive counting techniques extremely difficult. In this method, krypton gas was removed from water taken from an underground Swiss aquifer using standard cryogenic and chromatographic techniques. Stable krypton isotopes were then reduced by a factor of 10/sup 7/ by a two-stage isotopic enrichment cycle using a commercially available mass spectrometer. The enriched gas containing about 10/sup 8/ stable krypton atoms and about 10/sup 3/ atoms of /sup 81/Kr was implanted into a silicon disc. This disc was then placed in the high vacuum final counting chamber and the krypton was released by laser annealing. This chamber contained a quadrupole mass spectrometer which used a pulsed VUV laser source as the ionizer. The measured signal indicated that the sample contained 1200 (+-300) atoms of /sup 81/Kr.
Date:
October 1, 1985
Creator:
Kramer, S. D.; Hurst, G. S.; Chen, C. H.; Payne, M. G.; Allman, S. L.; Phillips, R. C. et al.
Object Type:
Article
System:
The UNT Digital Library
[Appendix to cross-petition for writ of certiorari]
An appendix to cross-petition for writ of certiorari on Baker v. Wade lawsuit case challenging 21.01 and 21.06 of the Texas Penal Code.
Date:
October 1985
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Application of Hardy's multiquadric interpolation to hydrodynamics
Hardy's multiquadric interpolation (MQI) scheme is a global, continuously differentiable interpolation method for solving scattered data interpolation problems. It is capable of producing monotonic, extremely accurate interpolating functions, integrals, and derivatives. Derivative estimates for a variety of one and two-dimensional surfaces were obtained. MQI was then applied to the spherical blast wave problem of von Neumann. The numerical solution agreed extremely well with the exact solution. 17 refs., 3 figs., 2 tabs.
Date:
October 1, 1985
Creator:
Kansa, E. J.
Object Type:
Article
System:
The UNT Digital Library
Assessment of the important radionuclides in nuclear waste
The relative importance of the various radionuclides contained in nuclear waste has been assessed by consideration of (1) the quantity of each radionuclide present, (2) the Environmental Protection Agency`s release limits for radionuclides, (3) how retardation processes such as solubility and sorption affect radionuclie transport, and (4) the physical and chemical forms of radionuclides in the waste. Three types of waste were reviewed: spent fuel, high-level waste, and defense high-level waste. Conditions specific to the Nevada Nuclear Waste Storage Investigations project potential site at Yucca Mountain were used to describe radionuclide transport. The actinides Am, Pu, Np, and U were identified as the waste elements for which solubility and sorption data were most urgently needed. Other important waste elements were identified as Sr, Cs, C, Ni, Zr, Tc, Th, Ra, and Sn. Under some conditions, radionuclides of three elements (C, Tc, and I) may have high solubility and negligible sorption. The potential for transport of some waste elements (C and I) in the gas phase must also be evaluated for the Yucca Mountain Site. 12 refs., 17 tabs.
Date:
October 1, 1985
Creator:
Kerrisk, J.F.
Object Type:
Report
System:
The UNT Digital Library
Background paper on cataract surgery and physician payment under the Medicare program
This report both describes current clinical and economic aspects of cataract surgery and analyzes how alternative methods of paying physicians might affect cataract surgery in the future.
Date:
October 1985
Creator:
Garrison Jr., Louis P. & Yamashiro, Sandra M.
Object Type:
Report
System:
The UNT Digital Library
Band structure of UO/sub 2/: an angle resolved and resonant photoemission study
A detailed study of angle resolved photoemission of UO/sub 2/ <100> in the normal emission configuration is presented. The results are compared to a semirelativistic LAPW band calculation with the actual calculated empty bands used in the data reduction. Excellent agreement is found with calculations both for filled states as well as critical points in the empty states with no adjustment of bands. f-p hybridization is found at the leading edge of the valence band and not at the bottom of the valence band. p-d hybridization is found throughout the valence bands.
Date:
October 1, 1985
Creator:
Arko, A. J.; Koelling, D. D.; Boring, A. M.; Ellis, W. P. & Cox, L. E.
Object Type:
Article
System:
The UNT Digital Library
Basketball team
Group portrait of the Lee College basketball team.
Date:
October 1985
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 63, No. 286, Ed. 1 Tuesday, October 1, 1985
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 1985
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History