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open access

Subcontractor Complaints Concerning the D.C. Union Station Renovation Project

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information regarding work done on the Union Station Redevelopment Project by Park Woodworking, Inc., focusing on the: (1) extent of the government's liability, if any, for costs incurred for which Park was not compensated; (2) extent to which Park was not compensated for the work it did; and (3) actions taken by the Secretary of Transportation and the Departmen… more
Date: December 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Foster Care: States' Early Experiences Implementing the Adoption and Safe Families Act

Description: 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 fo… more
Date: December 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vaccine Injury Compensation: Program Challenged to Settle Claims Quickly and Easily

Description: A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed challenges facing the Department of Health and Human Services' (HHS) Vaccine Injury Compensation Program (VICP), focusing on: (1) how long it takes to process a claim through VICP; (2) the extent to which recent changes to the program's injury table have made it easier or more difficult for petitioners to obtain compensation for vaccine-related injuries; and (3… more
Date: December 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Securities and Exchange Commission: Adoption of Amendments to the Intermarket Trading System Plan to Expand the ITS/Computer Assisted Execution System Linkage to All Listed Securities

Description: Other written product issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Securities and Exchange Commission (SEC) new rule on amending the Intermarket Trading System Plan. GAO noted that: (1) the final rule amends the plan governing the operation of the Intermarket Trading System; and (2) SEC complied with the applicable requirements in promulgating the rule."
Date: December 22, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Laser modulated scattering as a nondestructive evaluation tool for optical surfaces and thin film coatings

Description: 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… more
Date: December 22, 1999
Creator: Feit, M D; Kozlowski, M R; Rubenchik, A M; Sheehan, L & Wu, Z L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analysis of Parameters Affecting Beam Gauge Performance

Description: 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 diff… more
Date: December 22, 1999
Creator: S. Yadav, J. Kerby and J.P. Ozelis
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Lipscomb]

Description: 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
Duration: 1 minute 39 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
captions transcript

[News Clip: Lipscomb]

Description: 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
Duration: 55 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Rare B decays, mixing and cp violation at the Fermilab Tevatron

Description: Over two decades since its discovery at Fermilab in 1977, the b quark has become an important laboratory for the exploration of the Standard Model as well as a potential window beyond it. Its kinematic properties, its large mass and long lifetime, and its large production cross section in hadron collisions, make it an excellent subject of study at the Tevatron {bar p}p collider. In this article, we will review recent results from CDF and D0 in two categories of tests of the Standard Model: the … more
Date: December 22, 1999
Creator: Tseng, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Correlating radiation exposure with embrittlement: Comparative studies of electron- and neutron-irradiated pressure vessel alloys

Description: 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 … more
Date: December 22, 1999
Creator: Alexander, D. E.; Rehn, L. E.; Odette, G. R.; Lucas, G. E.; Klingensmith, D. & Gragg, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Temperature dependence of ion irradiation induced amorphization of zirconolite

Description: Zirconolite is one of the major host phases for actinides in various wasteforms for immobilizing high level radioactive waste (HLW). Over time, zirconolite's crystalline matrix is damaged by {alpha}-particles and energetic recoil nuclei recoil resulting from {alpha}-decay events. The cumulative damage caused by these particles results in amorphization. Data from natural zirconolites suggest that radiation damage anneals over geologic time and is dependant on the thermal history of the material.… more
Date: December 22, 1999
Creator: Smith, K. L.; Blackford, M. G.; Lumpkin, G. R. & Zaluzec, N. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}-PbTiO{sub 3} thin films synthesized by metalorganic chemical vapor deposition

Description: Metalorganic chemical vapor deposition was used to synthesize epitaxial Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}{minus}PbTiO{sub 3} films on SrTiO{sub 3} and SrRuO{sub 3}/SrTiO{sub 3} substrates, using solid Mg(DPM){sub 2} as the Mg precursor. Depositing conditions have been identified under which phase-pure perovskite PMN-PT may be grown. In contrast, in lead-poor environments, an additional second phases of a disordered magnesium-niobium oxide has tentatively been identified. X-ray diffraction and … more
Date: December 22, 1999
Creator: Streiffer, S. K.; Bai, G. R.; Auciello, O.; Baumann, P. K.; Ghosh, K.; Munkholm, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Evaluation of plasma-sprayed CoS{sub 2} cathodes for thermal batteries

Description: 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-curre… more
Date: December 22, 1999
Creator: Guidotti, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Electron channeling X-ray microanalysis for cation configuration in irradiate magnesium aluminate spinel

Description: 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 rev… more
Date: December 22, 1999
Creator: Matsumura, S.; Soeda, T.; Zaluzec, N. J. & Kinoshita, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

(Ba,Sr)TiO{sub 3} dielectrics: Relationship between bulk and thin film properties

Description: 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.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Mechanistic study of dielectric chemical mechanical polishing by spectral and scaling analysis of atomic force microscope images

Description: 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 … more
Date: December 22, 1999
Creator: Verhoff, M.L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Novel Approach to Material Development for Advanced Reactor Systems

Description: 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… more
Date: December 22, 1999
Creator: Was, G.S.; Atzmon, M. & Wang, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Trilinear gauge boson couplings and vector boson pair production

Description: The trilinear couplings appear as the three gauge boson vertices and can be measured by studying the gauge boson pair production processes. The measurement of the coupling parameters is one of the few remaining crucial tests of the Standard Model. D0 has studied W{gamma}, Z{gamma}, WW, and WZ production and found no evidence of anomalous production. In this paper we review all the current results from D0 data.
Date: December 22, 1999
Creator: Sanchez-Hernandez, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Higgs Mass Determination From Direct Reconstruction at a Linear E+E- Collider

Description: 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 kinema… more
Date: December 22, 1999
Creator: Juste, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Recent Results from CDF

Description: We present the latest results from the CDF experiment at the Tevatron Collider in p{bar p} collisions at {radical}s = 1.8 TeV. The large data sample collected during Run 1, from 1992 until 1995, allows measurements in many domains of high-energy physics. Here, we report on the first measurement of sin(2{beta}), a CP violation parameter, and on an improved measurement of the top quark cross section. We also report on searches for the so-far elusive Higgs boson, and for SUSY, through searches for… more
Date: December 22, 1999
Creator: Gallinaro, Michele
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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