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open access

Environmental Liabilities: DOD Training Range Cleanup Cost Estimates Are Likely Understated

Description: A letter report issued by the General Accounting Office with an abstract that begins "Because of concerns about the long-term budgetary implications associated with the environmental cleanup of the Department of Defense (DOD) training ranges, GAO examined (1) the potential magnitude of the cost to clean up these ranges in compliance with applicable laws and regulations, (2) the scope and reliability of DOD's training range inventory, and (3) the methodologies used to develop cost estimates. GAO… more
Date: April 11, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Army Training: Improvements Are Needed in 5-Ton Truck Driver Training and Supervision

Description: A letter report issued by the General Accounting Office with an abstract that begins "Instructor shortages are affecting the quality and quantity of Army truck driver training. Fort Leonard Wood, which trains about 90 percent of truck drivers, is especially affected by the instructor shortage. The result is that student drivers are not fully trained in all aspects of the instruction program when they graduate. If formal schools had enough instructors, they would presumably be able to teach the … more
Date: April 11, 2001
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Model Predictions of Chemically Controlled Slow Crack Growth with Application to Mechanical Effects in Geothermal Environments

Description: Representative, simplified geothermal rock-fluid systems are investigated with a modeling approach to estimate how rock water interactions affect coupled properties related to mechanical stability and permeability improvement through fracturing. First, geochemical modeling is used to determine the evolution of fluid chemistry at temperatures up to 300 C when fluids are in contact with representative rocks of continental origin. Then, a kinetic crack growth model for quartz is used to predict gr… more
Date: April 11, 2001
Creator: Viani, B. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Database Transformations for Biological Applications

Description: The goal of this project was to develop tools to facilitate data transformations between heterogeneous data sources found throughout biomedical applications. Such transformations are necessary when sharing data between different groups working on related problems as well as when querying data spread over different databases, files and software analysis packages.
Date: April 11, 2001
Creator: Overton, C.; Davidson, S. B.; Buneman, P. & Tannen, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Optical Imaging in Microstructures

Description: This research was focused on developing morphology-dependent stimulated raman scattering (MDSRS) spectroscopy as an analytic optical imaging technique. MDSRS uses the cavity modes (called morphology dependent resonances, MDRs) associated with axisymmetric dielectric microstructures to generate nonlinear optical signals. Since different cavity modes span different regions inside the microstructure, it becomes possible to generate location-specific spectra. The information gotten from MDSRS imagi… more
Date: April 11, 2001
Creator: Aker, P. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultra-High Resolution ARP Spectrometer System for NSLS Undulator Beamline U13. Final Report, August 15, 1996 - August 31, 2000j

Description: DOE award DEFG02-96ER45590 was for the construction of an ARP Spectrometer for installation at the National Synchrotron Light Source (NSLS) on undulator beamline U13. The spectrometer is completely assembled and under vacuum on the floor of the NSLS. It consists of vacuum chamber; pumps, sample cryostat and manipulator, and electronic energy analyzer. The analyzer has achieved energy resolution of 5 meV in multi-channel mode, angular resolution of 2 mR is expected though as yet unproven, and sa… more
Date: April 11, 2001
Creator: Jensen, Eric
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Magnetic Fusion: The DOE Fusion Energy Sciences Program

Description: For over 45 years, the United States has been trying to tame the energy source of the hydrogen bomb to produce electricity. Harnessing fusion, the nuclear reaction that powers the sun, requires confining and heating deuterium and tritium nuclei so that they will produce sustained, controlled nuclear energy. One path, called magnetic fusion energy (MFE), is to use very strong magnetic fields to confine a deuterium and tritium plasma while heating it to fusion temperatures.
Date: April 11, 2001
Creator: Rowberg, Richard E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

[Origin of Lewis acidity in solid materials]. DOE Final Report for Grant DE-FG02-90ER14130

Description: The aim of the research undertaken within the framework of this DOE grant was to further understanding of the origin of the Lewis acidity in solid materials. The study centered around aluminas and alumino-silicates. The main tools for investigation of this phenomenon were high-resolution solid state {sub 27}Al NMR, complemented by EPR and the chemical determination of catalytic activity.
Date: April 11, 2001
Creator: Fripiat, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Developing a Process for Commercial Silica Production from Geothermal Brines

Description: Useful mineral by-products can be produced from geothermal brines. Although silica has many commercial uses, problems remain in producing a marketable product. We are conducting laboratory and modeling studies aimed at optimizing for rubber additive use, the properties of silica precipitates from Salton Sea and Coso-like geothermal fluids, Our goal is to develop a robust technique for producing silicas that have desirable physical and chemical properties for commercial use, while developing a g… more
Date: April 11, 2001
Creator: Bourcier, W; Martin, S; Viani, B & Bruton, C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Analysis of Forcing, Response, and Feedbacks in a Paleoclimate Modeling Experiment

Description: It is often argued that paleoclimate studies are necessary to determine whether climate models and their predictions of future climate change can be trusted. An overall measure of the sensitivity of global mean surface temperature to a given radiative perturbation is provided by the global climate sensitivity parameter. In climate model experiments, this parameter appears to be moderately independent of the cause of the perturbation [see, for example, Hansen et al. (1997) and Hewitt and Mitchel… more
Date: April 11, 2001
Creator: Taylor, K E; Hewitt, C D; Braconnot, P; Broccoli, A J; Doutriaux, C & Mitchell, J F B
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

First Measurements of Pion Correlations by the PHENIX Experiment

Description: First identical-pion correlations measured at RHIC energies by PHENIX are presented. Two analyses with separate detectors, systematics, and statistics provide consistent results. The resulting HBT radii are moderately larger than those measured at lower energies. The k{sub t} dependence of the Bertsch-Pratt HBT radii is also similar to previous measures and is consistent with the conjecture of an expanding source.
Date: April 11, 2001
Creator: Johnson, S. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Toward an Energy Transfer and Interacting Scale Analysis of MHD Turbulence with Implications for Space and Astrophysical Plasmas

Description: MHD turbulence has numerous applications in space and astrophysical plasmas. In this paper, the eddy-damped quasi-normal Markovian (EDQNM) model is used to perform a preliminary study of the nonlinear transfer process in three-dimensional MHD turbulence. Both two- and three-dimensional contour plots of the triadic transfer functions are presented for the case of assumed energy spectra corresponding to Kolmogorov inertial subrange scaling.
Date: April 11, 2001
Creator: Zhou, Y; Schilling, O & Ghosh, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Designing Remote Monitoring Systems for Long Term Maintenance and Reliability

Description: As part of the effort to modernize safeguards equipment, the IAEA is continuing to acquire and install equipment for upgrading obsolete surveillance systems with digital technology; and providing remote-monitoring capabilities where and when economically justified. Remote monitoring is expected to reduce inspection effort, particularly at storage facilities and reactor sites. Remote monitoring technology will not only involve surveillance, but will also include seals, sensors, and other unatten… more
Date: April 11, 2001
Creator: Davis, G. E.; Johnson, G. L.; Schrader, F. D.; Stone, M. A. & Wilson, E. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Experimental Determination of Ca-Silicate Dissolution Rates: A Source of Calcium for Geologic CO2

Description: The international scientific community recognizes that greenhouse gases have the potential to influence climate, and that potential changes in sea level and weather patterns would be largely deleterious. Because CO{sub 2} is emitted in such large quantities and its atmospheric concentration has been consistently rising throughout the recent past, it is only prudent to focus attention on reducing its emission and on developing strategies for its removal from the atmosphere [1]. A variety of remo… more
Date: April 11, 2001
Creator: Carroll, S A & Knauss, K G
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A STUDY OF THE EFFECTS OF POST-COMBUSTION AMMONIA INJECTION ON FLY ASH QUALITY: CHARACTERIZATION OF AMMONIA RELEASE FROM CONCRETE AND MORTARS CONTAINING FLY ASH AS A POZZOLANIC ADMIXTURE

Description: Work completed in this reporting period focused on finalization of the Work and Management Plan, sample acquisition and analysis, evaluation of ammonia measurement methods, and measurement of ammonia loss from mortar. All fly ash samples have been acquired and analyzed for chemical composition and particle fineness. Three non-ammoniated fly ash samples were obtained from power plants that do not inject ammonia for NOx or particulate control, while three ammoniated fly ashes originate from plant… more
Date: April 11, 2001
Creator: Rathbone, Robert F. & Robl, Thomas L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
captions transcript

[News Clip: Elton John]

Description: B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: April 11, 2001, 4:00 p.m.
Duration: 36 seconds
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Item Type: Refine your search to only Video
Partner: UNT Libraries Special Collections
open access

Fracture Toughness of 6.4 Mm (0.25 Inch) Arc-Cast Molobdenum and Molybdenum-Tzm Plate at Room Temperature and 300 Degrees C

Description: THE FRACTURE TOUGHNESS OF 6.4 mm (0.25 INCH) LOW CARBON ARC-CAST (LCAC) MOLYBDENUM AND ARC-CAST MOLYBDENUM-TZM ALLOY PLATE WERE MEASURED AT ROOM TEMPERATURE AND 300 DEGREES C USING COMPACT TNESION SPECIMENTS. THE EFFECT OF CRACK PLANE ORIENTATION (LONGITUDINAL VS. TRANSVERSE) AND ANNEALING PRACTICE (STRESS-RELIEVED VS. RECRYSTALLIZED) WERE EVALUATED. DEPENDING UPON THE TEST TEMPERATURE EITHER A STANDARD K[SUB]IC OR A J-INTEGRAL ANALYSIS WAS USED TO OBTAIN THE TOUGHNESS VALUE. AT ROOM TEMPERATUR… more
Date: April 11, 2001
Creator: Shields, J. A., Jr.; Lipetzky, P. & Mueller, A. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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