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Altus Times (Altus, Okla.), Vol. 100, No. 237, Ed. 1 Wednesday, December 22, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, December 22, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of Parameters Affecting Beam Gauge Performance
Beam gauges have been used in the last decade or so for measuring the internal azimuthal compressive coil stresses in superconducting magnets. In early model Large Hadron Collider Interaction Region (LHC IR) quadrupoles tested at Fermilab, the beam gauges indicated excessively high amounts of inner and outer coil prestress during the collaring process, inconsistent with the coil size and modulus data. In response to these measurements, a simple mechanics based quantitative understanding of different factors affecting beam gauges has been developed. A finite element model with contact elements and non-linear material behavior, confirmed with experimental results, was developed. The results indicate that a small plastic deformation of either the beam or the backing plate can cause significant errors in the measured stress values. The effect of variations in coil modulus and support boundary conditions on beam gauge performance are also discussed.
Date:
December 22, 1999
Creator:
S. Yadav, J. Kerby and J.P. Ozelis
Object Type:
Article
System:
The UNT Digital Library
Argonne National Laboratory Institutional Plan FY 2000 - FY 2005.
None
Date:
December 22, 1999
Creator:
Beggs, S. D. & Director, Office of The
Object Type:
Report
System:
The UNT Digital Library
(Ba,Sr)TiO{sub 3} dielectrics: Relationship between bulk and thin film properties
Thin films of complex perovskites have a number of potentially important applications. Of major scientific and practical concern is the scaling of properties as film dimensions are reduced. This paper describes a satisfactory relationship between bulk and thin film dielectric properties of (Ba,Sr)TiO{sub 3}. Relative contributions of strain, A:B cation stoichiometry, and interface are separated to explain temperature dependent dielectric behavior.
Date:
December 22, 1999
Creator:
Kingon, A. I.; Streiffer, S. K.; Parker, C. B. & Stemmer, S.
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 78, No. 45, Ed. 1 Wednesday, December 22, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 104, No. 102, Ed. 1 Wednesday, December 22, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Correlating radiation exposure with embrittlement: Comparative studies of electron- and neutron-irradiated pressure vessel alloys
Comparative experiments using high energy (10 MeV) electrons and test reactor neutrons have been undertaken to understand the role that primary damage state has on hardening (embrittlement) induced by irradiation at 300 C. Electrons produce displacement damage primarily by low energy atomic recoils, while fast neutrons produce displacements from considerably higher energy recoils. Comparison of changes resulting from neutron irradiation, in which nascent point defect clusters can form in dense cascades, with electron irradiation, where cascade formation is minimized, can provide insight into the role that the in-cascade point defect clusters have on the mechanisms of embrittlement. Tensile property changes induced by 10 MeV electrons or test reactor neutron irradiations of unalloyed iron and an Fe-O.9 wt.% Cu-1.0 wt.% Mn alloy were examined in the damage range of 9.0 x 10{sup {minus}5} dpa to 1.5 x 10{sup {minus}2} dpa. The results show the ternary alloy experienced substantially greater embrittlement in both the electron and neutron irradiate samples relative to unalloyed iron. Despite their disparate nature of defect production similar embrittlement trends with increasing radiation damage were observed for electrons and neutrons in both the ternary and unalloyed iron.
Date:
December 22, 1999
Creator:
Alexander, D. E.; Rehn, L. E.; Odette, G. R.; Lucas, G. E.; Klingensmith, D. & Gragg, D.
Object Type:
Article
System:
The UNT Digital Library
Electron channeling X-ray microanalysis for cation configuration in irradiate magnesium aluminate spinel
High angular resolution electron channeling X-ray spectroscopy (HARECXS) was examined as a practical tool to locate lattice-ions in spinel crystals. The orientation dependent intensity distribution of emitted X-rays obtained by HARECXS is so sensitive to lattice-ion configuration in the illuminated areas that the occupation probabilities on specific positions in the crystal lattice can be determined accurately through comparison with the theoretical rocking curves. HARECXS measurements have revealed partially disordered cation arrangement in MgO{center_dot}nAl{sub 2}O{sub 3} with n = 1.0 and 2.4. Most Al{sup 3+} lattice-ions occupy the octahedral (VIII) sites, while Mg{sup 2} lattice-ions reside on both the tetrahedral (IV) and the octahedral (VIII) sites. The structural vacancies are enriched in the IV-sites. Further evacuation of cations from the IV-sites to the VIII-sites is recognized in a disordering process induced by irradiation with 1 MeV Ne{sup +} ions up to 8.9 dpa at 870 K.
Date:
December 22, 1999
Creator:
Matsumura, S.; Soeda, T.; Zaluzec, N. J. & Kinoshita, C.
Object Type:
Article
System:
The UNT Digital Library
Evaluation of plasma-sprayed CoS{sub 2} cathodes for thermal batteries
Conventional electroactive stack components in thermal batteries are constructed from pressed-powder parts. These include the anode, separator, and cathode pellets (discs). Pressing parts that are less than 0.010 inch thick is difficult. The use of plasma spray to deposit thin CoS{sub 2} cathode films onto a stainless steel substrate was examined as an alternative to pressed-powder cathodes. The plasma-sprayed electrodes were tested in single cells under isothermal conditions and constant-current discharge over a temperature range of 400 C to 550 C using standard LiSi anodes and separators based on the LiCl-KCl eutectic. Similar tests were conducted with cells built with conventional pressed-powder cathodes, which were tested under the same conditions for comparative purposes. This paper presents the results of those tests.
Date:
December 22, 1999
Creator:
Guidotti, R.A.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, December 22, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Foster Care: States' Early Experiences Implementing the Adoption and Safe Families Act
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Adoption and Safe Families Act of 1997 (ASFA), focusing on: (1) how states have responded to ASFA regarding legal, administrative, and other changes that social workers may need to make in their day-to-day practice of handling child welfare cases; (2) the status of states' implementation of the two provisions related to making timely permanency decisions for those foster children who are unable to safely return home; and (3) the actions the Department of Health and Human Services (HHS) has taken to assist states and monitor the implementation of these two provisions."
Date:
December 22, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Higgs Mass Determination From Direct Reconstruction at a Linear E+E- Collider
We study the feasibility of a precise measurement of the mass of a 120 GeV MSM Higgs boson through direct reconstruction of ZH {yields} q{bar q}H events that would be achieved in a future e{sup +}e{sup -} linear collider operating at a center-of-mass energy of 500 GeV. Much effort has been put in a ''realistic simulation'' by including irreducible+reducible backgrounds, realistic detector effects and reconstruction procedures and sophisticated analysis tools involving Neural Networks and kinematical fitting. As a result, the Higgs mass is determined with a statistical accuracy of 50 MeV and the Z-Higgs Yukawa coupling measured to 0.7%, assuming 500 fb{sup -1} of integrated luminosity.
Date:
December 22, 1999
Creator:
Juste, A.
Object Type:
Article
System:
The UNT Digital Library
Illustrated Paperboy (Cleveland, Tex.), Vol. 7, No. 39, Ed. 1 Wednesday, December 22, 1999
Weekly newspaper from Cleveland, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Laser modulated scattering as a nondestructive evaluation tool for optical surfaces and thin film coatings
Laser modulated scattering (LMS) is introduced as a non-destructive evaluation tool for defect inspection and characterization of optical surfaces and thin film coatings. This technique is a scatter sensitive version of the well-known photothermal microscopy (PTM) technique. It allows simultaneous measurement of the DC and AC scattering signals of a probe laser beam from an optical surface. By comparison between the DC and AC scattering signals, one can differentiate absorptive defects from non-absorptive ones. This paper describes the principle of the LMS technique and the experimental setup, and illustrates examples on using LMS as a tool for nondestructive evaluation of high quality optics.
Date:
December 22, 1999
Creator:
Feit, M D; Kozlowski, M R; Rubenchik, A M; Sheehan, L & Wu, Z L
Object Type:
Article
System:
The UNT Digital Library
Levelland and Hockley County News-Press (Levelland, Tex.), Vol. 21, No. 76, Ed. 1 Wednesday, December 22, 1999
Semiweekly newspaper from Levelland, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Rigg, John
Object Type:
Newspaper
System:
The Portal to Texas History
Mannford Eagle (Mannford, Okla.), Vol. 18, No. 43, Ed. 1 Wednesday, December 22, 1999
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
Retherford, Bill R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mannford Star (Mannford, Okla.), Vol. 6, No. 16, Ed. 1 Wednesday, December 22, 1999
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Mechanistic study of dielectric chemical mechanical polishing by spectral and scaling analysis of atomic force microscope images
Thermal oxide and PETEOS oxide surfaces, polished on an IPEC 472 with different combinations of polish pad, slurry, and polishing conditions, were studied with ex situ atomic force microscopy. The post polish surfaces were analyzed qualitatively by visual inspection and quantitatively by spectral and scaling analyses. Spectral and scaling analyses gave consistent interpretations of morphology evolution. Polishing with either a fixed abrasive pad or alumina-based slurry occurred via a mechanism for which asperities are removed and recesses are filled. A sputtering-type mechanism may contribute to material removal when polishing with silica- or ceria-based slurries.
Date:
December 22, 1999
Creator:
Verhoff, M.L.
Object Type:
Article
System:
The UNT Digital Library
The Mercedes Enterprise (Mercedes, Tex.), Vol. 87, No. 51, Ed. 1 Wednesday, December 22, 1999
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
[News Clip: Lipscomb]
Video footage from the NBC 5 television station in Fort Worth, Texas, to accompany a news story. This story aired at 10 P.M.
Date:
December 22, 1999
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Lipscomb]
Video footage from the NBC 5 television station in Fort Worth, Texas, to accompany a news story. This story aired at 6 P.M.
Date:
December 22, 1999
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
A Novel Approach to Material Development for Advanced Reactor Systems
OAK B188 A Novel Approach to Material Development for Advanced Reactor Systems. Year one of this project had three major goals. First, to specify, order and install a new high current ion source for more rapid and stable proton irradiation. Second, to assess the use low temperature irradiation and chromium pre-enrichment in an effort to isolate a radiation damage microstructure in stainless steels without the effects of RIS. Third, to prepare for the irradiation of reactor pressure vessel steel and Zircaloy. In year 1 quarter 1, the project goal was to order the high current ion source and to procure and prepare samples of stainless steel for low temperature proton irradiation.
Date:
December 22, 1999
Creator:
Was, G.S.; Atzmon, M. & Wang, L.
Object Type:
Report
System:
The UNT Digital Library
The Panola Watchman (Carthage, Tex.), Vol. 126, No. 102, Ed. 1 Wednesday, December 22, 1999
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
December 22, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History