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926 Matching Results
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Creep of SiC Hot-Pressed with Al, B, and C
None
Date:
March 31, 2000
Creator:
Sixta, M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Dallas Voice (Dallas, Tex.), Vol. 16, No. 48, Ed. 1 Friday, March 31, 2000
Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date:
March 31, 2000
Creator:
Vercher, Dennis
Object Type:
Newspaper
System:
The UNT Digital Library
Design Studies of ''Island'' Type MOX Lead Test Assembly
In this document the results of neutronics studies of <<Island>> type MOX LTA design are presented. The characteristics both for infinite MOX grids and for VVER-1000 core with 3 MOX LTAs are calculated. the neutronics parameters of MOX fueled core have been performed using the Russian 3D code BIPR-7A and 2D code PERMAK-A with the constants prepared by the cell spectrum code TVS-M.
Date:
March 31, 2000
Creator:
Pavlovitchev, A.M.
Object Type:
Report
System:
The UNT Digital Library
Development of Advanced In-Situ Techniques for Chemistry Monitoring and Corrosion Mitigation in SCWO Environments
This project is developing sensing technologies and corrosion monitoring techniques for use in super critical water oxidation (SCWO) systems to reduce the volume of mixed low-level nuclear waste by oxidizing organic components in a closed cycle system where CO2 and other gaseous oxides are produced, leaving the radioactive elements concentrated in ash. The technique uses water at supercritical temperatures under highly oxidized conditions by maintaining a high fugacity of molecular oxygen in the system, which causes high corrosion rates of even the most corrosive resistant reactor materials. This project significantly addresses the high corrosion shortcoming through development of (a) advanced electrodes and sensors for in situ potentiometric monitoring of pH in high subcritical and supercritical aqueous solutions, (b) an approach for evaluating the association constants for 1-1 aqueous electrolytes using a flow-through electrochemical thermocell; (c) an electrochemical noise sensor for the in situ measurement of corrosion rate in subcritical and supercritical aqueous systems; (d) a model for estimating the effect of pressure on reaction rates, including corrosion reactions, in high subcritical and supercritical aqueous systems. The project achieved all objectives, except for installing some of the sensors into a fully operating SCWO system.
Date:
March 31, 2000
Creator:
Macdonald, D. D. & Lvov, S. N.
Object Type:
Report
System:
The UNT Digital Library
Development of computer program ENAUDIBL for computation of the sensation levels of multiple, complex, intrusive sounds in the presence of residual environmental masking noise
The relative audibility of multiple sounds occurs in separate, independent channels (frequency bands) termed critical bands or equivalent rectangular (filter-response) bandwidths (ERBs) of frequency. The true nature of human hearing is a function of a complex combination of subjective factors, both auditory and nonauditory. Assessment of the probability of individual annoyance, community-complaint reaction levels, speech intelligibility, and the most cost-effective mitigation actions requires sensation-level data; these data are one of the most important auditory factors. However, sensation levels cannot be calculated by using single-number, A-weighted sound level values. This paper describes specific steps to compute sensation levels. A unique, newly developed procedure is used, which simplifies and improves the accuracy of such computations by the use of maximum sensation levels that occur, for each intrusive-sound spectrum, within each ERB. The newly developed program ENAUDIBL makes use of ERB sensation-level values generated with some computational subroutines developed for the formerly documented program SPECTRAN.
Date:
March 31, 2000
Creator:
Liebich, R. E.; Chang, Y.-S. & Chun, K. C.
Object Type:
Article
System:
The UNT Digital Library
Development of computer program ENMASK for prediction of residual environmental masking-noise spectra, from any three independent environmental parameters
Residual environmental sound can mask intrusive4 (unwanted) sound. It is a factor that can affect noise impacts and must be considered both in noise-impact studies and in noise-mitigation designs. Models for quantitative prediction of sensation level (audibility) and psychological effects of intrusive noise require an input with 1/3 octave-band spectral resolution of environmental masking noise. However, the majority of published residual environmental masking-noise data are given with either octave-band frequency resolution or only single A-weighted decibel values. A model has been developed that enables estimation of 1/3 octave-band residual environmental masking-noise spectra and relates certain environmental parameters to A-weighted sound level. This model provides a correlation among three environmental conditions: measured residual A-weighted sound-pressure level, proximity to a major roadway, and population density. Cited field-study data were used to compute the most probable 1/3 octave-band sound-pressure spectrum corresponding to any selected one of these three inputs. In turn, such spectra can be used as an input to models for prediction of noise impacts. This paper discusses specific algorithms included in the newly developed computer program ENMASK. In addition, the relative audibility of the environmental masking-noise spectra at different A-weighted sound levels is discussed, which is determined by using the methodology …
Date:
March 31, 2000
Creator:
Chang, Y.-S.; Liebich, R. E. & Chun, K. C.
Object Type:
Article
System:
The UNT Digital Library
A DSP based power electronics interface for alternate/renewable energy systems. Quarterly report 3.
This report is an update on the research project involving the implementation of a DSP based power electronics interface for alternate/renewable energy systems that was funded by the Department of Energy under the Inventions and Innovations program 1998. The objective of this research is to develop a utility interface (dc to ac converter) suitable to interconnect alternate/renewable energy sources to the utility system. The DSP based power electronics interface in comparison with existing methods will excel in terms of efficiency, reliability and cost. Moreover DSP-based control provides the flexibility to upgrade/modify control algorithms to meet specific system requirements. The proposed interface will be capable of maintaining stiffness of the ac voltages at the point of common coupling regardless of variation in the input dc bus voltage. This will be achieved without the addition of any extra components to the basic interface topology but by inherently controlling the inverter switching strategy in accordance to the input voltage variation.
Date:
March 31, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Eastern Statesman (Wilburton, Okla.), Vol. 77, No. 8, Ed. 1 Friday, March 31, 2000
Biweekly student newspaper from Eastern Oklahoma State College in Wilburton, Oklahoma that includes local, state, and campus news along with advertising.
Date:
March 31, 2000
Creator:
Hurst, Mindi
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Eddie Gossage (left) and Danny "The Dude" Lasoski (right) celebrating]
Photograph of Eddie Gossage (left) and Danny "The Dude" Lasoski (right) celebrating Lasoski's win at the Texas Motor Speedway Dirt Track. Gossage wears a white ballcap with a multi-colored logo on it, a blue button-up shirt, black pants, a black belt, and a black jacket. He raises his right hand in a fist as he smiles at the camera. Lasoski also wears a white ballcap with a logo on it, plus a white jumpsuit with "Roth" on the chest in blue-outlined purple letters and "Motorsports" in black below it. Above the waist of the jumpsuit is "Beef Packers" in blue. Lasoski holds his trophy above his head, an object with a black rectangular base that holds up a glass shape of Texas. On the trophy's base is the white text "WINNER March 30, 2000" while on the Texas-shaped glass are multiple white words and a small checkered pattern. In front of Lasoski and Gossage is a short white wall with a red border and a large logo on it. Behind the duo is a large, diagonally tilted object that's red-brown in color and has the number "83" towards its left end in in large blue numbers. Above this number is …
Date:
March 31, 2000
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
Engineering Development of Coal-Fired High-Performance Power Systems
None
Date:
March 31, 2000
Creator:
Tsuo, York
Object Type:
Report
System:
The UNT Digital Library
Evaluation of neutron absorbers for the melt-dilute treatment of aluminum-based spent fuel
Aluminum-based spent nuclear fuel (Al-SNF) from foreign and domestic research reactors is being consolidated at the Savannah River Site (SRS) for ultimate disposal in the Mined Geologic Disposal System (MGDS). Most of the aluminum-based fuel material contains highly enriched uranium (HEU) (greater than 20 percent {sup 235}U), which poses a proliferation risk and challenges the preclusion of criticality events for disposal periods exceeding 10,000 years.
Date:
March 31, 2000
Creator:
Vinson, D.W.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, March 31, 2000
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 31, 2000
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Field-Reversed Configuration Power Plant Critical-Issue Scoping Study
A team from the Universities of Wisconsin, Washington, and Illinois performed an engineering scoping study of critical issues for field-reversed configuration (FRC) power plants. The key tasks for this research were (1) systems analysis for deuterium-tritium (D-T) FRC fusion power plants, and (2) conceptual design of the blanket and shield module for an FRC fusion core. For the engineering conceptual design of the fusion core, the project team focused on intermediate-term technology. For example, one decision was to use steele structure. The FRC systems analysis led to a fusion power plant with attractive features including modest size, cylindrical symmetry, good thermal efficiency (52%), relatively easy maintenance, and a high ratio of electric power to fusion core mass, indicating that it would have favorable economics.
Date:
March 31, 2000
Creator:
Santarius, J. F.; Mogahed, E. A.; Emmert, G. A.; Khater, H. Y.; Nguyen, C. N.; Ryzhkov, S. V. et al.
Object Type:
Report
System:
The UNT Digital Library
Final report: Theory of relativistic heavy ion collisions
None
Date:
March 31, 2000
Creator:
Shuryak, Edward
Object Type:
Report
System:
The UNT Digital Library
Financial Audit: 1999 Financial Report of the United States Government
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the annual audited financial statements for 24 major departments and agencies of the U.S. government."
Date:
March 31, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Financial Audit: Independent Counsel Expenditures for the Six Months Ended September 30, 1999
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO audited the expenditures of eight offices of independent counsel (OIC) for the six months ended September 30, 1999."
Date:
March 31, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Grandview Tribune (Grandview, Tex.), Vol. 105, No. 33, Ed. 1 Friday, March 31, 2000
Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2000
Creator:
Bosher, Casey & Marten, Donna K.
Object Type:
Newspaper
System:
The Portal to Texas History
Groundwater Quality Assessment Plan for Single-Shell Waste Management Area B-BX-BY at the Hanford Site
Pacific Northwest National Laboratory conducted a first determination groundwater quality assessment at the Hanford Site. This work was performed for the U.S. Department of Energy, Richland Operations Office, in accordance with the Federal Facility Compliance Agreement during fiscal year (FY) 1996-1997. The purpose of the assessment was to determine if waste from the Single-Shell Tank (SST) Waste Management Area (WMA) B-BX-BY had entered the groundwater at levels above the drinking water standards (DWS). The resulting assessment report documented evidence demonstrating that waste from the WMA has impacted groundwater quality (Narbutovskih 1998). The WMA is located in the northwest corner of the 200 East Area and consists of the 241-B, 241-BX, and 241-BY Tank Farms and ancillary waste systems (Figure 1.1). The unit is regulated under Resource Conservation and Recovery Act (RCRA) interim-status regulations (40 CFR 265, Subpart F) and was originally placed in assessment groundwater monitoring (40 CFR 265.93 [d]) in June 1996 when elevated conductivity in downgradient monitoring well 299-E33-32 was confirmed by verification sampling. A rise in conductivity was initially observed in this well in February 1996.
Date:
March 31, 2000
Creator:
Narbutovskih, Susan M
Object Type:
Report
System:
The UNT Digital Library
Groundwater quality assessment plan for single-shell waste management area B-BX-BY at the Hanford Site
Pacific Northwest National Laboratory conducted a first determination groundwater quality assessment at the Hanford Site. This work was performed for the US Department of Energy, Richland Operations Office, in accordance with the Federal Facility Compliance Agreement during the time period 1996--1998. The purpose of the assessment was to determine if waste from the Single-Shell Tank (SST) Waste Management Area (WMA) B-BX-BY had entered the groundwater at levels above the drinking water standards (DWS). The resulting assessment report documented evidence demonstrating that waste from the WMA has, most likely, impacted groundwater quality. Based on 40 CFR 265.93 [d] paragraph (7), the owner-operator must continue to make the minimum required determinations of contaminant level and of rate/extent of migrations on a quarterly basis until final facility closure. These continued determinations are required because the groundwater quality assessment was implemented prior to final closure of the facility.
Date:
March 31, 2000
Creator:
Narbutovskih, SM
Object Type:
Report
System:
The UNT Digital Library
Highly Efficient Rapid Tooling using Optimized Cooling
None
Date:
March 31, 2000
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Hopkins County Echo (Sulphur Springs, Tex.), Vol. 205, No. 12, Ed. 1 Friday, March 31, 2000
Weekly newspaper from Sulphur Springs, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2000
Creator:
Keys, Scott & Lamb, Bill
Object Type:
Newspaper
System:
The Portal to Texas History
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 43, No. 30, Ed. 1 Friday, March 31, 2000
Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date:
March 31, 2000
Creator:
Lynch, Mary Louise
Object Type:
Newspaper
System:
The Portal to Texas History
Identifying electronic properties relevant to improving the performance and stability of amorphous silicon-based mid-gap and low-gap cells: Annual subcontract report, 16 January 1998--15 January 1999
An overriding theme of the work described in this report has been the effect of partial crystallinity, or the approach to partial crystallinity, on the electronic properties of a-Si:H. This includes, of course, how degradation or the relative stability of these films is affected by the approach to, or onset of, microcrystallinity. The authors first discussed the results on a set of samples produced by dc reactive magnetron sputtering, obtained in collaboration with John Abelson's group at the University of Illinois, for which they demonstrated the existence of a small, but significant, microcrystalline component. For these films, the degradation kinetics was found to be quite unusual; however, it could be well accounted for by a model that postulated two phases of degrading material. One was a-Si:H host material of good quality and the other was a more defective component associated with boundary regions near the microcrystallites. The sub-band-gap photocapacitance measurements on these films also indicated the existence of a distinct feature (a ``shoulder'' with a threshold near 1.1 eV) that signaled the presence of the microcrystalline phase. The second set of samples investigated were produced by Uni-Solar, deposited under conditions of high hydrogen dilution, very close to but just below …
Date:
March 31, 2000
Creator:
Cohen, J. D.
Object Type:
Report
System:
The UNT Digital Library
Implementation of HIPAA: Progress Slow in Enforcing Federal Standards in Nonconforming States
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Health Care Financing Administration's (HCFA) enforcement of the Health Insurance Portability and Accountability Act of 1996 (HIPAA), focusing on: (1) HCFA's progress in enforcing HIPAA and related laws in states lacking conforming statutes; (2) HCFA's role in enforcing HIPAA for state and local government health plans; and (3) the status of pending federal regulations regarding HIPAA's nondiscrimination provisions that restrict health plans from excluding employees, or varying benefits, premiums, or employer contributions, on the basis of health status."
Date:
March 31, 2000
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library