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Labor-Management Reporting and Disclosure: Status of Labor's Efforts to Develop Electronic Reporting and a Publicly Accessible Database

Description: Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the Department of Labor's (DOL) plan to develop and implement an electronic reporting and disclosure system and the status of the Department's efforts."
Date: March 16, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Combating Terrorism: Observations on Biological Terrorism and Public Health Initiatives

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed its ongoing work and preliminary observations on the biological terrorist threat and some aspects of the Department of Health and Human Services' (HHS) bioterrorism initiative, focusing on: (1) intelligence agencies' judgments about the threat of terrorism; (2) the importance and benefits of threat and risk assessments to provide a sound basis for targeting the nati… more
Date: March 16, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Coast Guard: Strategies for Procuring New Ships, Aircraft, and Other Assets

Description: Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the Coast Guard's plans for modernizing its ships, aircraft, and other capital assets needed to carry out its missions, as well as the agency's plans and strategies to fund these needs, focusing on the Coast Guard's progress in: (1) justifying the Deepwater Capability Replacement Project and addressing GAO's concerns about its affordability; and (2) developing strat… more
Date: March 16, 1999
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Medical applications of ultrashort pulse lasers

Description: The characteristics of the ultrashort pulse laser (USPL, < 1 ps) ablation of biological tissues are investigated both theoretically and experimentally. Effective USPL parameters for minimal damage and high ablation rates are discussed.
Date: March 16, 1999
Creator: DaSilva, L. B.; Feit, M. D.; Kim, B. M. & Rubenchil, A. M.
Partner: UNT Libraries Government Documents Department
open access

Status of the first batch of niobium resonator production for the New Delhi booster linac.

Description: This paper reports the status and details of the costs of construction of niobium superconducting resonant cavities for a linear accelerator, presently being built as a booster for the 15 UD tandem Pelletron accelerator at the Nuclear Science Centre, New Delhi. The linear accelerator will have three cryostat modules, each holding eight quarter-wave resonators. Construction of a batch of ten resonators for the linac started at Argonne National Laboratory in May 1997. For production, all fabricat… more
Date: March 16, 1999
Creator: Potukuchi, P. N.
Partner: UNT Libraries Government Documents Department
open access

Better Methods for Predicting Lifetimes of Seal Materials

Description: We have been working for many years to develop better methods for predicting the lifetimes of polymer materials. Because of the recent interest in extending the lifetimes of nuclear weapons and the importance of environmental seals (o-rings, gaskets) for protecting weapon interiors against oxygen and water vapor, we have recently turned our attention to seal materials. Perhaps the most important environmental o-ring material is butyl rubber, used in various military applications. Although it is… more
Date: March 16, 1999
Creator: Celina, M.; Gillen, K. T. & Keenan, M. R.
Partner: UNT Libraries Government Documents Department
open access

Supplement analysis, Southpoint power project

Description: The Calpine Corporation applied to interconnect its proposed power plant with the Western Area Power Administration`s (Western) Parker-Davis project in western Arizona. Western, as a major electric transmission system owner is required by existing policies and regulations, to provide access to its transmission system, when requested by an eligible organization. The proposed interconnection would integrate a major source of new generation into the Parker-Davis system which would allow Calpine to… more
Date: March 16, 1999
Partner: UNT Libraries Government Documents Department
open access

CAFE: A Computer Tool for Accurate Simulation of the Regulatory Pool Fire Environment for Type B Packages

Description: The Container Analysis Fire Environment computer code (CAFE) is intended to provide Type B package designers with an enhanced engulfing fire boundary condition when combined with the PATRAN/P-Thermal commercial code. Historically an engulfing fire boundary condition has been modeled as {sigma}T{sup 4} where {sigma} is the Stefan-Boltzman constant, and T is the fire temperature. The CAFE code includes the necessary chemistry, thermal radiation, and fluid mechanics to model an engulfing fire. Eff… more
Date: March 16, 1999
Creator: Gritzo, L. A.; Koski, J. A. & Suo-Anttila, A. J.
Partner: UNT Libraries Government Documents Department
open access

Corrosion in Non-Hermetic Microelectronic Devices

Description: Many types of integrated and discrete microelectronic devices exist in the enduring stockpile. In the past, most of these devices have used conventional ceramic hermetic packaging (CHP) technology. Sometime in the future, plastic encapsulated microelectronic (PEM) devices will almost certainly enter the inventory. In the presence of moisture, several of the aluminum-containing metallization features common to both types of packaging become susceptible to atmospheric corrosion (Figure 1). A brea… more
Date: March 16, 1999
Creator: Braithwaite, J. W. & Sorensen, N. R.
Partner: UNT Libraries Government Documents Department
open access

Quantum Well Width Dependence of Threshold Current Density in InGaN Lasers

Description: The quantum confined Stark effect was found to result in a strong quantum well width dependence of threshold current density in strained group-III nitride quantum well lasers. For an In{sub 0.2}Ga{sub 0.8}N/GaN structure with quantum well width in the neighborhood of 3.5nm, our analysis shows that the reduction in spontaneous emission loss by the electron-hole spatial separation outweighs the corresponding reduction in gain to produce a threshold current density minimum.
Date: March 16, 1999
Creator: Amano, H.; Chow, W.W.; Han, J. & Takeuchi, T.
Partner: UNT Libraries Government Documents Department
open access

Microscopic Theory of Optical Nonlinearities and Spontaneous Emission Lifetime in Group-III Nitride Quantum Wells

Description: Microscopic calculations of the absorption/gain and luminescence spectra are presented for wide bandgap Ga{sub 1{minus}x}In{sub x}N/GaN quantum well systems. Whereas structures with narrow well widths exhibit the usual excitation dependent bleaching of the exciton resonance without shifting spectral position, a significant blue shift of the exciton peak is obtained for wider quantum wells. This blue shift, which is also present in the excitation dependent luminescence spectra, is attributed to … more
Date: March 16, 1999
Creator: Chow, W.; Kira, M. & Koch, S.W.
Partner: UNT Libraries Government Documents Department
open access

Radiation Control Coatings Installed on Federal Buildings at Tyndall Air Force Base

Description: The technical objectives of this CRADA comprise technology deployment and energy conservation efforts with the radiation control coatings industry and the utility sector. The results of this collaboration include a high-level data reporting, analysis and management system to support the deployment efforts. The technical objectives include successfully install, commission, operate, maintain and document the performance of radiation control coatings on roofs at Tyndall AFB and the Buildings Techn… more
Date: March 16, 1999
Creator: Kaba, R. L. & Petrie, T. W.
Partner: UNT Libraries Government Documents Department
open access

Effect of Thick Film Firing Conditions on the Solderability and Structure of Au-Pt-Pd Conductor for Low-Temperature, Co-Fired Ceramic Substrates

Description: Low-temperature, co-fired ceramics (LTCC) are the substrate material-of-choice for a growing number of multi-chip module (MCM) applications. Unlike the longer-standing hybrid microcircuit technology based upon alumina substrates, the manufacturability and reliability of thick film solder joints on LTCC substrates have not been widely studied. An investigation was undertaken to fully characterize such solder joints. A surface mount test vehicle with Daisy chain electrical connections was designe… more
Date: March 16, 1999
Creator: Hernandez, Cynthia L. & Vianco, Paul T.
Partner: UNT Libraries Government Documents Department
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Growth and Fabrication of GaN/AlGaN Heterojunction Bipolar Transistor

Description: A GaN/AlGaN heterojunction bipolar transistor structure with Mg doping in the base and Si Doping in the emitter and collector regions was grown by Metal Organic Chemical Vapor Deposition in c-axis Al(2)O(3). Secondary Ion Mass Spectrometry measurements showed no increase in the O concentration (2-3x10(18) cm(-3)) in the AlGaN emitter and fairly low levels of C (~4-5x10(17) cm (-3)) throughout the structure. Due to the non-ohmic behavior of the base contact at room temperature, the current gain … more
Date: March 16, 1999
Creator: Abernathy, C. R.; Baca, A. G.; Cao, X. A.; Cho, H.; Dang, G. T.; Donovan, S. M. et al.
Partner: UNT Libraries Government Documents Department
open access

Safety analysis report for packaging (onsite) sample pig transport system

Description: This Safety Analysis Report for Packaging (SARP) provides a technical evaluation of the Sample Pig Transport System as compared to the requirements of the U.S. Department of Energy, Richland Operations Office (RL) Order 5480.1, Change 1, Chapter III. The evaluation concludes that the package is acceptable for the onsite transport of Type B, fissile excepted radioactive materials when used in accordance with this document.
Date: March 16, 1999
Creator: MCCOY, J.C.
Partner: UNT Libraries Government Documents Department
open access

New Carbon Activation Process for Increased Surface Accessibility in Electrochemical Capacitors

Description: A process for making carbon film or powder suitable for double capacitor electrodes having a capacitance of up to about 300 F/cm{sup 3} is disclosed. This is accomplished by treating in aqueous nitric acid for a period of about 5 to 15 minutes thin carbon films obtained by carbonizing carbon-containing polymeric material having a high degree of molecular directionality, such as polyimide film, then heating the treated carbon film in a non-oxidizing atmosphere at a non-graphitizing temperature o… more
Date: March 16, 1999
Creator: Doughty, Daniel H. & Eisenmann, Erhard T.
Partner: UNT Libraries Government Documents Department
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