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Aerial Radiation Detection
An airborne system designed for the detection of radioactive sources on the soil surface from an aircraft normally senses gamma rays emitted by the source. Gamma rays have the longest path length (least attenuation) through the air of any of the common radioactive emissions and will thus permit source detection at large distances. A secondary benefit from gamma rays detection if that nearly all radioactive isotopes can be identified by the spectrum of gammas emitted. Major gaseous emissions from fuel processing plants emit gammas that may be detected and identified. Some types of special nuclear material also emit neutrons which are also useful for detection at a distance.
Date:
September 30, 1999
Creator:
Quam, W. M.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 124, No. 18, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
September 30, 1999
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
Alternatives generation and analysis for double-shell tank primary ventilation systems emissions control and monitoring
This AGA addresses the question: ''What equipment upgrades, operational changes, and/or other actions are required relative to the DST tanks farms' ventilation systems to support retrieval, staging (including feed sampling), and delivery of tank waste to the Phase I private contractor?'' Issues and options for the various components within the ventilation subsystem affect each other. Recommended design requirements are presented and the preferred alternatives are detailed.
Date:
September 30, 1999
Creator:
SEDERBURG, J.P.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 100, No. 165, Ed. 1 Thursday, September 30, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 30, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
ASSESSMENT OF THE PCFBC-EXPOSED AND ACCELERATED LIFE-TESTED CANDLE FILTERS
Development of the hot gas filtration technology has been the focus of DOE/FETC and Siemens Westinghouse Power Corporation during the past twenty years. Systems development during this time has successfully lead to the generation and implementation of high temperature Siemens Westinghouse particulate filtration systems that are currently installed and are operational at Demonstration Plant sites, and which are ready for installation at commercial plant sites. Concurrently, materials development has advanced the use of commercially available oxide- and nonoxide-based monoliths, and has fostered the manufacture and use of second generation, oxide-based, continuous fiber reinforced ceramic composites and filament wound materials. This report summarizes the material characterization results for commercially available and second generation filter materials tested in Siemens Westinghouse's advanced, high temperature, particulate removal system at the Foster Wheeler, pressurized circulating fluidized-bed combustion, pilot-scale test facility in Karhula, Finland, and subsequent extended accelerated life testing of aged elements in Siemens Westinghouse pressurized fluidized-bed combustion simulator test facility in Pittsburgh, PA. The viability of operating candle filters successfully for over 1 year of service life has been shown in these efforts. Continued testing to demonstrate the feasibility of acquiring three years of service operation on aged filter elements is recommended.
Date:
September 30, 1999
Creator:
Alvin, M. A.
Object Type:
Report
System:
The UNT Digital Library
ASSESSMENT OF THE PCFBC-EXPOSED AND ACCELERATED LIFE-TESTED CANDLE FILTERS
None
Date:
September 30, 1999
Creator:
Alvin, M. A.
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Pressure Chemical Vapor Deposition of CdTe for High-Efficiency Thin-Film PV Devices; Annual Report, 26 January 1998-25 January 1999
ITN's 3-year project, titled ''Atmospheric Pressure Chemical Vapor Deposition (APCVD) of CdTe for High-Efficiency Thin-Film Photovoltaic (PV) Devices,'' has the overall objectives of improving thin-film CdTe PV manufacturing technology and increasing CdTe PV device power conversion efficiency. CdTe deposition by APCVD employs the same reaction chemistry as has been used to deposit 16%-efficient CdTe PV films, i.e., close-spaced sublimation, but employs forced convection rather than diffusion as a mechanism of mass transport. Tasks of the APCVD program center on demonstrating APCVD of CdTe films, discovering fundamental mass-transport parameters, applying established engineering principles to the deposition of CdTe films, and verifying reactor design principles that could be used to design high-throughput, high-yield manufacturing equipment. Additional tasks relate to improved device measurement and characterization procedures that can lead to a more fundamental understanding of CdTe PV device operation, and ultimately, to higher device conversion efficiency and greater stability. Specifically, under the APCVD program, device analysis goes beyond conventional one-dimensional device characterization and analysis toward two-dimension measurements and modeling. Accomplishments of the first year of the APCVD subcontract include: selection of the Stagnant Flow Reactor design concept for the APCVD reactor, development of a detailed reactor design, performance of detailed numerical calculations simulating …
Date:
September 30, 1999
Creator:
Meyers, P. V.; Kee, R.; Wolden, C.; Raja, L.; Kaydanov, V.; Ohno, T. et al.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 287, Ed. 1 Thursday, September 30, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Bogata News (Bogata, Tex.), Vol. 89, No. 21, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1999
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
Budget Issues: Comparison of Discretionary Outlays Under Alternative Spending Paths
Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO compared defense, nondefense, and total discretionary spending under five discretionary spending paths, focusing on: (1) the Congressional Budget Office (CBO) estimates for the congressional budget resolution for fiscal year 2000; (2) the CBO baseline assuming that discretionary spending complies with the statutory caps through 2002 and grows with inflation thereafter (CBO capped baseline); (3) an alternative CBO baseline assuming that discretionary spending grows with inflation after 1999 and with no projection for emergencies; (4) the Office of Management and Budget (OMB) Mid-Session Review estimate of discretionary spending under the President's budget without the Social Security and Medicare reforms proposed; and (5) the OMB baseline assuming that discretionary spending complies with the statutory caps through 2002 and grows with inflation thereafter (OMB capped baseline)."
Date:
September 30, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
Budgeting for Emergencies: State Practices and Federal Implications
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on state experiences with reserve funds for emergencies or other unpredictable funding needs and state practices that could be instructive in the emergency spending debate, particularly regarding how the federal government might budget for emergencies with surplus funds."
Date:
September 30, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 109, No. 39, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
September 30, 1999
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean/Herald (Rusk, Tex.), Vol. 150, No. 32, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
September 30, 1999
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Choices for A Brighter Future: Perspectives on Renewable Energy
The report discusses the perspectives on the evolving U.S. electricity future, the renewable electric technology portfolio, the regional outlook, and the opportunities to move forward. Renewables are at a critical juncture as the domestic electricity marketplace moves toward an era of increased choice and greater diversity. The cost and performance of these technologies have improved dramatically over the past decade, yet their market penetration has stalled as the power industry grapples with the implications of the emerging competitive marketplace. Renewable energy technologies already contribute to the global energy mix and are ready to make an even greater contribution in the future. However, the renewables industry faces critical market uncertainties, both domestically and internationally, as policy commitments to renewables at both the federal and state levels are being reshaped to match the emerging competitive marketplace. The energy decisions that we make, or fail to make, today will have long-lasting implications. We can act now to ensure that renewable energy will play a major role in meeting the challenges of the evolving energy future. We have the power to choose.
Date:
September 30, 1999
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
The Colony Courier-Leader (The Colony, Tex.), Vol. 18, No. 23, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1999
Creator:
Fleming, Jackie
Object Type:
Newspaper
System:
The Portal to Texas History
Community Development: Businesses' Use of Empowerment Zone Tax Incentives
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the extent to which businesses used: (1) Empowerment Zone and Enterprise Community program's three tax incentives; and (2) three other tax incentives that are targeted to help businesses, including those in distressed areas."
Date:
September 30, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Cooper Review (Cooper, Tex.), Vol. 119, No. 39, Ed. 1 Thursday, September 30, 1999
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
September 30, 1999
Creator:
Kisic, Theresa
Object Type:
Newspaper
System:
The Portal to Texas History
Crystal field interaction in the pyrochlore magnet Ho{sub 2}Ti{sub 2}O{sub 7}.
Neutron time-of-flight spectroscopy has been employed to study the crystal field interaction in the pyrochlore titanate Ho{sub 2}Ti{sub 2}O{sub 7}. The crystal field parameters and corresponding energy level scheme have been determined from a profile fit to the observed neutron spectra. The groundstate is a well separated E{sub g} doublet with a strong Ising like anisotropy, which can give rise to titration in the pyrochlore lattice. Using the crystal field parameters determined for the Ho compound as an estimate of the crystal field interaction in other pyrochlore magnets, we also find the Ising type behavior for Dy. In contrast, the almost planar like anisotropy found for Er and Yb prevents frustration, because of the continuous range of possible spin orientations in this case.
Date:
September 30, 1999
Creator:
Rosenkranz, S.; Ramirez, A. P.; Hayashi, A.; Cava, R. J.; Siddharthan, R. & Shastry, B. S.
Object Type:
Article
System:
The UNT Digital Library
Defense Health Care: Appointment Timeliness Goals Not Met; Measurement Tools Need Improvement
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Defense's (DOD) administration of its health maintenance organization, TRICARE Prime, focusing on: (1) DOD's performance in scheduling appointments; and (2) possible reasons why Prime enrollees might not obtain appointments within the appointment timeliness goals."
Date:
September 30, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Management: Army Could Achieve Efficiencies By Consolidating Ammunition Management
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Army's implementation of the recommendations made by the Pacific Northwest National Laboratory's study on ammunition management, focusing on the Army's: (1) progress toward reorganizing the management of conventional ammunition to address the fragmentation issues; and (2) efforts to improve business practices to enhance the operational efficiency of ammunition production and procurement."
Date:
September 30, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Delaware Basin Monitoring Annual Report
The Delaware Basin Drilling Surveillance Program (DBDSP) is designed to monitor drilling activities in the vicinity of the Waste Isolation Pilot Plant (WIPP). This program is based on Environmental Protection Agency (EPA) requirements. The EPA environmental standards for the management and disposal of transuranic (TRU) radioactive waste are codified in 40 CFR Part 191 (EPA 1993). Subparts B and C of the standard address the disposal of radioactive waste. The standard requires the Department of Energy (DOE) to demonstrate the expected performance of the disposal system using a probabilistic risk assessment or performance assessment (PA). This PA must show that the expected repository performance will not release radioactive material above limits set by the EPA's standard. This assessment must include the consideration of inadvertent drilling into the repository at some future time.
Date:
September 30, 1999
Creator:
Services, Washington Regulatory and Environmental
Object Type:
Report
System:
The UNT Digital Library
Demonstration of {sup 99}MO production using LEU metal-foil targets in the cintichem process.
In March and September 1999, demonstrations of the irradiation, disassembly, and processing of LEU metal foil targets were performed in the Indonesian BATAN PUSPIPTEK Facilities. These demonstrations showed that (1) irradiation and disassembly can be performed so that the uranium foil can be easily removed from the target body, and (2) with only minor changes to the current process, the LEU foil can produce yield and purity of the {sup 99}Mo product at least as great as that obtained with the HEU target. Further, because of these modifications, two hours are cut from the processing time, and the liquid waste volume is reduced. Results of these demonstrations will be presented along with conclusions and plans for future work.
Date:
September 30, 1999
Creator:
Vandegrift, G. F.; Conner, C.; Hofman, G. L.; Snelgrove, J. L.; Mutalib, A.; Purwadi, B. et al.
Object Type:
Article
System:
The UNT Digital Library
Development of an On-Line Coal Washability Analyzer
Washability analysis is the basis for nearly all coal preparation plant separations. Unfortunately, there are no on-line techniques for determining this most fundamental of all coal cleaning information. In light of recent successes at the University of Utah, it now appears possible to determine coal washability on-line through the use of x-ray computed tomography (CT) analysis. The successful development of such a device is critical to the establishment of process control and automated coal blending systems. In this regard, Virginia Tech, Terra Tek Inc., and several eastern coal companies have joined with the University of Utah and agreed to undertake the development of a x-ray CT-based on-line coal washability analyzer with financial assistance from DOE. The three-year project will cost $594,571, of which 33% ($194,575) will be cost-shared by the participants. The project involves development of appropriate software and extensive testing/evaluation of well-characterized coal samples from operating coal preparation plants. Each project participant brings special expertise to the project which is expected to create a new dimension in coal cleaning technology. Finally, it should be noted that the analyzer may prove to be a universal analyzer capable of providing not only washability analysis, but also particle size distribution analysis, ash …
Date:
September 30, 1999
Creator:
Miller, J. D.
Object Type:
Report
System:
The UNT Digital Library
Development of annular targets for {sup 99}MO production.
The new annular target performed well during irradiation. The target is inexpensive and provides good heat transfer during irradiation. Based on these and previous tests, we conclude that targets with zirconium tubes and either nickel-plated or zinc-plated foils work well. We proved that we could use aluminum target tubes, which are much cheaper and easier to work with than the zirconium tubes. In aluminum target tubes nickel-plated fission-recoil barriers work well and prevent bonding of the foil to the new target tubes during irradiation. Also, zinc-plated and aluminum-foil barriers appear promising in anodized aluminum tubes. Additional tests are anticipated to address such issues as fission-recoil barrier thickness and uranium foil composition. Overall, however, the target was successful and will provide an inexpensive, efficient way to irradiate LEU metal foil for the production of {sup 99}Mo.
Date:
September 30, 1999
Creator:
Conner, C.; Lewandowski, E. F.; Snelgrove, J. L.; Liberatore, M. W.; Walker, D. E.; Wiencek, T. C. et al.
Object Type:
Article
System:
The UNT Digital Library