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457
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113
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104
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8
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7
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7
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7
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6
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5
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5
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Jim Argo Collection
404
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117
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98
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74
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63
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47
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18
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13
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11
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Degree Department
States
Year
Month
Day
Language
The Clifton Record (Clifton, Tex.), Vol. 102, No. 19, Ed. 1 Wednesday, March 5, 1997
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
March 5, 1997
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 102, No. 71, Ed. 1 Friday, September 5, 1997
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
September 5, 1997
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Llano News (Llano, Tex.), Vol. 109, No. 34, Ed. 1 Thursday, June 5, 1997
Weekly newspaper from Llano, Texas that includes local, state, and national news along with advertising.
Date:
June 5, 1997
Creator:
Buckner, Walter L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 202, No. 49, Ed. 1 Friday, December 5, 1997
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
December 5, 1997
Creator:
Keys, Scott & Lamb, Bill
Object Type:
Newspaper
System:
The Portal to Texas History
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 202, No. 36, Ed. 1 Friday, September 5, 1997
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
September 5, 1997
Creator:
Keys, Scott & Lamb, Bill
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 102, No. 11, Ed. 1 Wednesday, February 5, 1997
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
February 5, 1997
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 107, No. 23, Ed. 1 Thursday, June 5, 1997
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
June 5, 1997
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. SEVENTY-SECOND YEAR, No. 23, Ed. 1 Thursday, June 5, 1997
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
June 5, 1997
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Harper Herald (Harper, Tex.), Vol. 69, No. 30, Ed. 1 Tuesday, August 5, 1997
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
August 5, 1997
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 115, No. 80, Ed. 1 Sunday, October 5, 1997
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 5, 1997
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
[Pangburn Family Videos, No. 16 - A Trip to Corpus Christi]
This home movie excerpt documents the family's trip from Oklahoma to Corpus Christi. The video begins with the family visiting the Waco Suspension bridge and stopping to play with a tarantula. The family then views artifacts at the Texas Rangers Museum and stays in a campground in Schulenburg, Texas. The family is next at a campground on Padre Island where they take a ferry boat to Port Aransas. There they see the USS Lexington and the Texas State Aquarium. That evening they eat dinner at Landry's Restaurant and observe the city and USS Lexington after dark. The following day, the family plays at the beach and goes swimming.
Date:
1997-08-05/1997-08-08
Creator:
Pangburn
Object Type:
Video
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 111, No. 23, Ed. 1 Thursday, June 5, 1997
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
June 5, 1997
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Environmentally assisted cracking of LWR materials.
The effect of dissolved oxygen level on fatigue life of austenitic stainless steels is discussed and the results of a detailed study of the effect of the environment on the growth of cracks during fatigue initiation are presented. Initial test results are given for specimens irradiated in the Halden reactor. Impurities introduced by shielded metal arc welding that may affect susceptibility to stress corrosion cracking are described. Results of calculations of residual stresses in core shroud weldments are summarized. Crack growth rates of high-nickel alloys under cyclic loading with R ratios from 0.2-0.95 in water that contains a wide range of dissolved oxygen and hydrogen concentrations at 289 and 320 C are summarized.
Date:
December 5, 1997
Creator:
Chopra, O. K.; Chung, H. M.; Kassner, T. F.; Park, J. H.; Shack, W. J.; Zhang, J. et al.
Object Type:
Article
System:
The UNT Digital Library
Clean and cost-effective dry boundary lubricants for aluminum forming.
Preliminary research in our laboratory has demonstrated that boric acid is an effective lubricant with an unusual capacity to reduce sliding fiction (providing friction coefficients as low as 0.02) and wear of metallic and ceramic materials. More recent studies have revealed that water or methanol solutions of boric acid can be used to prepare strongly bonded layers of boric acid on aluminum surfaces. It appears that boric acid molecules have a strong tendency to bond chemically to the naturally oxidized surfaces of aluminum and its alloys and to make these surfaces very slippery. Recent metal formability tests indicated that the boric acid films formed on aluminum surfaces by spraying or dipping worked quite well; improving draw scale performance by 58 to 75%. These findings have increased the prospect that boric acid can be formulated and optimized as an effective boundary lubricant and used to solve the friction, galling, and severe wear problems currently encountered in cold-forming of aluminum products. Accordingly, the major goal of this paper is to demonstrate the usefulness and lubrication capacity of thin boric acid films formed on aluminum surfaces by simple dipping or spraying processes and to describe the lubrication mechanisms under typical metal forming conditions. …
Date:
December 5, 1997
Creator:
Erdemir, A. & Fenske, G. R.
Object Type:
Article
System:
The UNT Digital Library
1 MeV electron irradiation of solid Xe nanoclusters in Al : an in-situ HRTEM study.
Thin film samples of a simple embedded nanocluster system consisting of solid Xe precipitates in Al have been subjected to 1 MeV electron irradiation in a high-voltage electron microscope. High-resolution images have been recorded on videotape in order to monitor the changes to the system resulting from the passage of electrons through the film. Inspection of the video recordings (in some cases frame-by-frame) reveals that complex, rapid processes occur under the electron beam. These include, movement of small clusters, coalescence of neighboring clusters, shape changes, the apparent melting and resolidification of the Xe, and the creation and annealing of extended defects within the Xe lattice. A tentative interpretation of some of the observations is presented in terms of the electron-induced displacement processes at the surface of the clusters.
Date:
December 5, 1997
Creator:
Donnelly, S. E.; Furuya, K.; Song, M.; Birtcher, R. C. & Allen, C. W.
Object Type:
Article
System:
The UNT Digital Library
Converting films for x-ray detectors, applied to amorphous silicon arrays.
This paper presents results from our on-going efforts to characterize semiconductor thin films for direct x-ray conversion. We deposit these thin films onto an amorphous silicon (a-Si:H) readout array with the overall goal of developing a large area x-ray detector for protein crystallography, and for other x-ray imaging fields.
Date:
December 5, 1997
Creator:
Ross, S. & Zentai, G.
Object Type:
Article
System:
The UNT Digital Library
Structure and electrochemical potential simulation for the cathode material Li(1+x)V(3)O(8).
The structure and electrochemical potential of monoclinic Li{sub 1+x}V{sub 3}O{sub 8} were calculated within the local-density-functional-theory framework by use of plane-wave-pseudopotential methods. Special attention was given to the compositions 1+x=1.2 and 1+x=4, for which x-ray diffraction structure refinements are available. The calculated low-energy configuration for 1+x=4 is consistent with the three Li sites identified in x-ray diffraction measurements and predicts the position of the unobserved Li. The location of the tetrahedrally coordinated Li in the calculated low-energy configuration for 1+x=1.5 is consistent with the structure measured by x-ray diffraction for Li{sub 1.2}V{sub 3}O{sub 8}. Calculations were also performed for the two monoclinic phases at intermediate Li compositions, for which no structural information is available. Calculations at these compositions are based on hypothetical Li configurations suggested by the ordering of vacancy energies for Li{sub 4}V{sub 3}O{sub 8} and tetrahedral site energies in Li{sub 1.5}V{sub 3}O{sub 8}. The internal energy curves for the two phases cross near 1+x=3. Predicted electrochemical potential curves agree well with experiment.
Date:
December 5, 1997
Creator:
Benedek, R.; Thackeray, M. M. & Yang, L. H.
Object Type:
Article
System:
The UNT Digital Library
First use of a laser-driven polarized H/D target at the IUCF cooler.
The HERMES Laser-Driven Target Task Force (Argonne, Erlangen and Illinois) is charged with developing a polarized H/D target for use in the HERA ring at DESY. Rapid progress was made in the beginning of 1996, leading us to the decision to test the target in a realistic experimental environment. In particular, polarizations of 0.6 and flows above 10{sup 18} atoms{center_dot}s{sup {minus}1} have been achieved on the bench. The laser-driven target and a simple detector system are currently installed in Cooler storage ring at the Indiana University Cyclotron Facility in order to test its applicability to nuclear physics experiments. Target polarizations are being measured using the {rvec H}(p, p) and {rvec D}(p, p) reactions. Initial tests were reasonably successful and the target is well along toward becoming viable for nuclear physics.
Date:
December 5, 1997
Creator:
Bailey, K.; Brack, J.; Cadman, R. V.; Cummings, W. J.; Fedchak, J.; Fox, B. et al.
Object Type:
Article
System:
The UNT Digital Library
Experimental results on the design for the APS PID global orbit control system.
The Advanced Photon Source third generation synchrotrons light source needs a stabilized particle beam position to produce high brightness and low emittance radiation. Global orbit correction control is introduced and is utilized to satisfy the demanding needs of the accelerator. This paper presents the experimental results for determining an effective and optimal controller to meet the global orbit correction requirements. These requirements include frequency/time domain demands consisting of vibrational noise attenuation, limiting of controller gains for stability and improving the system time response. Experiments were conducted with a digital signal processor implementing various PID sets to make comparisons between simulations and experiments. Measurements at these PID sets supported the results of software simulation.
Date:
December 5, 1997
Creator:
Chung, Y. & Kirchman, J. A.
Object Type:
Article
System:
The UNT Digital Library
Growth and characterization of epitaxial fcc Fe wedges on diamond (100).
Epitaxial Fe wedges with a thickness gradation from 0--20 {angstrom} were grown on diamond(100) at room temperature, subsequently annealed, and investigated with reflection high-energy electron diffraction and the surface magneto-optical Kerr effect. The results indicate that for <5 monolayer thicknesses the Fe grows on C(100) as smooth, epitaxial fcc films, which are not ferromagnetic, but that thicker films undergo a transition to become rough and the ordinary bcc ferromagnetic phase.
Date:
December 5, 1997
Creator:
Bader, S. D.; Keavneu, D. J.; Keune, W.; Li, D. & Pearson, J.
Object Type:
Article
System:
The UNT Digital Library
Modified ring stretch tensile testing of Zr-1Nb cladding.
In a round robin effort between the US Nuclear Regulatory Commission, Institut de Protection et de Surete Nucleaire in France, and the Russian Research Centre-Kurchatov Institute, Argonne National Laboratory conducted 16 modified ring stretch tensile tests on unirradiated samples of Zr-1Nb cladding, which is used in Russian VVER reactors. Tests were conducted at two temperatures (25 and 400 C) and two strain rates (0.001 and 1 s{sup {minus}1}). At 25 C and 0.001 s{sup {minus}1}, the yield strength (YS), ultimate tensile strength (UTS), uniform elongation (UE), and total elongation (TE) were 201 MPa, 331 MPa, 18.2%, and 57.6%, respectively. At 400 C and 0.001 s{sup {minus}1}, the YS, UTS, UE, and TE were 109 MPa, 185 MPa, 15.4%, and 67.7%, respectively. Finally, at 400 C and 1 s{sup {minus}1}, the YS, UTS, UE, and TE were 134 MPa, 189 MPa, 18.9%, and 53.4%, respectively. The high strain rate tests at room temperature were not successful. Test results proved to be very sensitive to the amount of lubrication used on the inserts; because of the large contact area between the inserts and specimen, too little lubrication leads to significantly higher strengths and lower elongations being reported. It is also important to …
Date:
December 5, 1997
Creator:
Billone, M. C.; Chung, H. M.; Cohen, A. B.; Majumdar, S.; Neimark, L. A. & Ruther, W. E.
Object Type:
Article
System:
The UNT Digital Library
Design and fabrication of high density uranium dispersion fuels.
Twelve different uranium alloys and compounds with uranium densities greater than 13.8 g/cc were fabricated into fuel plates. Sixty-four experimental fuel plates, referred to as microplates, with overall dimensions of 76.2 mm x 22.2 mm x 1.3 mm and elliptical fuel zone of nominal dimensions of 51 mm x 9.5 mm, began irradiation in the Advanced Test Reactor on August 23, 1997. The fuel test matrix consists of machined or comminuted (compositions are in weight%) U-10Mo,U-8Mo, U-6Mo, U-4Mo, U-9Nb-3Zr, U-6Nb-4Zr, U-5Nb-3Zr, U-6Mo-1Pt, U-6Mo-0.6 Ru, 10Mo-0.05Sn, U{sub 2}Mo and U{sub 3}Si{sub 2}(as a control). The low enriched ({sup 235}U < 20%) fuel materials were cast, powdered, mixed with aluminum dispersant at a volume ratio of 1:3, compacted and hot rolled to form the microplates. Spherical atomized powders of two fuels, U-10Mo and U{sub 3}Si{sub 2}, were utilized to make microplates and included in the irradiation test as well. The experimental design and fabrication steps employed in the selection and production of the fueled microplates is discussed.
Date:
November 5, 1997
Creator:
Clark, C. R.; McGann, D. J.; Meyer, M. K.; Trybus, C. L. & Wiencek, T. C.
Object Type:
Article
System:
The UNT Digital Library
[Photograph 2012.201.B1162.0079]
Photograph used for a story in the Daily Oklahoman newspaper.
Date:
February 5, 1997
Creator:
unknown
Object Type:
Photograph
System:
The Gateway to Oklahoma History
[News Clip: Routier over pkg]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas to accompany a news story. This story aired at 6 P.M.
Date:
February 5, 1997
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library