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Altus Times (Altus, Okla.), Vol. 100, No. 180, Ed. 1 Monday, October 18, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1999
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Sun (Alvin, Tex.), Vol. 108, No. 122, Ed. 1 Monday, October 18, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 18, 1999
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of Breakthrough Profiles Based on Gamma Ray Emission Along Loaded Packed Bed Columns: Comparative Evaluation of Ionsiv IE-911 and Chabazite Zeolite for the Removal of Radiostrontium and Cesium from Groundwater
A gamma counting system has been assembled that can profile the breakthrough fronts of gamma-emitting radioisotopes longitudinally and axially along a loaded column. This profiling technique has been particularly useful in columns studies such as those performed with IONSP IE-911, a crystalline silicotitanate (CST) manufactured by UOP, in which unusually long operating times are required to observe cesium breakthrough in column effluent. The length of the mass transfer zone and extent of column saturation can be detected early in a column study by viewing the relative emission of gamma emitters along I the length of the column. In this study, gamma scans were used to analyze loaded CST and zeolite columns used in the treatment of process wastewater simulant and actual groundwater. Results indicate good run-to-run reproductibility in acquiring the scans. The longitudinal gamma scans for both {sup 90}Sr and {sup 137}Cs conformed with breakthrough results reported on the basis of column effluent activity. Although not obvious from data obtained by monitoring effluent activity, the gamma scans indicated that both cesium and strontium in the saturated zone of the CST column are slowly displaced by the higher levels of groundwater cations and are then resorbed further down the column. This …
Date:
October 18, 1999
Creator:
Bostick, D.T.; DePaoli, S.M. & Lucero, A.J.
Object Type:
Article
System:
The UNT Digital Library
Annual Hanford Site Environmental Permitting status report
The information contained in, and/or referenced in, this Annual Hanford Site Environmental Permitting Status Report addresses Permit Condition II.W (Other Permits and/or Approvals) of the Dangerous Waste Portion of the Resource Conservation and Recovery Act Permit for the Treatment, Storage, and Disposal of Dangerous Waste, issued by the Washington State Department of Ecology (WA7890008967). Condition II.W specifies that the Permittees are responsible for obtaining all other applicable federal, state, and local permits authorizing the development and operation of the Hanford Facility. Condition II.W further specifies that the Permittees are to use their best efforts to obtain such permits. For the purposes of this Permit Condition, ''best efforts'' mean submittal of documentation and/or approval(s) in accordance with schedules specified in applicable regulations, or as determined through negotiations with the applicable regulatory agencies.
Date:
October 18, 1999
Creator:
Sonnichsen, J. C.
Object Type:
Report
System:
The UNT Digital Library
Application of a prognostic model validation system to real-time dispersion modeling
The Atmospheric Release Advisory Capability (ARAC) at the Lawrence Livermore National Laboratory uses the U.S. Navy's Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) to supply high-resolution wind data for use in its real-time dispersion modeling system. ARAC has used COAMPS products to support several events and exercises, and COAMPS forecasts appear accurate, based on qualitative examination. Recently ARAC has developed a quantitative verification system which calculates COAMPS error and bias statistics, comparing COAMPS forecasts of various lengths with observational data. This paper shows how this system has been used to guide ARAC operators, who need an estimate of the likely behavior of COAMPS forecasts of various lengths in different regions, seasons, and weather patterns.
Date:
October 18, 1999
Creator:
Pace, J C
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 302, Ed. 1 Monday, October 18, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 18, 1999
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Beam Line and First Vessel Wall Shielding in HYLIFE-II
The present Heavy Ion Driver design for HYLIFE-II requires 96 beams from each side, or a total of 192 beams. The beams are separated from each other, at present, by an angle of 4.25 degrees. Two sets of Flibe (molten Salt) jets, 90 degrees apart, are used for x-ray and neutron shielding of the first vessel wall. Space between jets result in no shielding of each beam tube and a surrounding rectangular area of vessel wall. A vortex shielding device is proposed to provide this additional required shielding. This report describes the near ideal quality of Flibe jets that are needed, for the shielding design to be practical. First wall shielding at locations other than close proximity to the beam lines, is accomplished by oscillating flow and extensions to the horizontal beam protection jets.
Date:
October 18, 1999
Creator:
House, P.A.
Object Type:
Report
System:
The UNT Digital Library
Characterization of the LiSi/CsBr-LiBr-KBr/FeS(2) System for Potential Use as a Geothermal Borehole Power Source
We are continuing to study the suitability of modified thermal-battery technology as a potential power source for geothermal borehole applications. Previous work focused on the LiSi/FeS{sub 2} couple over a temperature range of 350 C to 400 C with the LiBr-KBr-LiF eutectic, which melts at 324.5 C. In this work, the discharge processes that take place in LiSi/CsBr-LiBr-KBr eutectic/FeS{sub 2} thermal cells were studied at temperatures between 250 C and 400 C using pelletized cells with immobilized electrolyte. The CsBr-LiBr-KBr eutectic was selected because of its lower melting point (228.5 C). Incorporation of a quasi-reference electrode allowed the determination of the relative contribution of each electrode to the overall cell polarization. The results of single-cell tests and limited battery tests are presented, along with preliminary data for battery stacks tested in a simulated geothermal borehole environment.
Date:
October 18, 1999
Creator:
GUIDOTTI, RONALD A. & REINHARDT, FREDERICK W.
Object Type:
Article
System:
The UNT Digital Library
COAL CONVERSION WASTEWATER TREATMENT BY CATALYTIC OXIDATION IN SUPERCRITICAL WATER
Wastewaters from coal-conversion processes contain phenolic compounds in appreciable concentrations. These compounds need to be removed so that the water can be discharged or re-used. Catalytic oxidation in supercritical water is one potential means of treating coal-conversion wastewaters, and this project examined the reactions of phenol over different heterogeneous oxidation catalysts in supercritical water. More specifically, we examined the oxidation of phenol over a commercial catalyst and over bulk MnO{sub 2}, bulk TiO{sub 2}, and CuO supported on Al{sub 2} O{sub 3}. We used phenol as the model pollutant because it is ubiquitous in coal-conversion wastewaters and there is a large database for non-catalytic supercritical water oxidation (SCWO) with which we can contrast results from catalytic SCWO. The overall objective of this research project is to obtain the reaction engineering information required to evaluate the utility of catalytic supercritical water oxidation for treating wastes arising from coal conversion processes. All four materials were active for catalytic supercritical water oxidation. Indeed, all four materials produced phenol conversions and CO{sub 2} yields in excess of those obtained from purely homogeneous, uncatalyzed oxidation reactions. The commercial catalyst was so active that we could not reliably measure reaction rates that were not limited by …
Date:
October 18, 1999
Creator:
Savage, Phillip E.
Object Type:
Report
System:
The UNT Digital Library
COMMERCIAL SNF ACCIDENT RELEASE FRACTIONS
The purpose of this design analysis is to specify and document the total and respirable fractions for radioactive materials that are released from an accident event at the Monitored Geologic Repository (MGR) involving commercial spent nuclear fuel (CSNF) in a dry environment. The total and respirable release fractions will be used to support the preclosure licensing basis for the MGR. The total release fraction is defined as the fraction of total CSNF assembly inventory, typically expressed as an activity inventory (e.g., curies), of a given radionuclide that is released to the environment from a waste form. The radionuclides are released from the inside of breached fuel rods (or pins) and from the detachment of radioactive material (crud) from the outside surfaces of fuel rods and other components of fuel assemblies. The total release fraction accounts for several mechanisms that tend to retain, retard, or diminish the amount of radionuclides that are available for transport to dose receptors or otherwise can be shown to reduce exposure of receptors to radiological releases. The total release fraction includes a fraction of airborne material that is respirable and could result in inhalation doses. This subset of the total release fraction is referred to as …
Date:
October 18, 1999
Creator:
Bader, S.O.
Object Type:
Report
System:
The UNT Digital Library
Core-Level Satellites and Outer Core-Level Multiplet Splitting in Mn Model Compounds
We report a systematic study of the Mn 2p, 3s and 3p core-level photoemission and satellite structures for Mn model compounds. Charge-transfer from the ligand state to the 3d metal state is observed and is distinguished by prominent shake-up satellites. We also observe that the Mn 3s multiplet splitting becomes smaller as the Mn oxidation state increases, and that 3s-3d electron correlation reduces the branching ratio of the 7S:5S states in the Mn 3s spectra. In addition, as the ligand electronegativity decreases, the spin state purity is lost in the 3s spectra as evidenced by peak broadening. Our results are best understood in terms of the configuration-interaction (CI) model including intrashell electron correlation, charge-transfer and final-state screening.
Date:
October 18, 1999
Creator:
Nelson, A. J.; Reynolds, J. G. & Roos, J. W.
Object Type:
Article
System:
The UNT Digital Library
Defense Computers: DOD Y2K Functional End-to-End Testing Progress and Test Event Management
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the effectiveness of the Department of Defense's efforts to perform year 2000-related end-to-end tests for its major business functions."
Date:
October 18, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Development of an Innovative Laser-Assisted Coating Process for Extending Lifetime of Metal Casting Dies. Final Report
Die casting dies used in the metal casting industry fail due to thermal fatigue cracking accompanied by the presence of residual tensile stresses, corrosion, erosion and wear of die surfaces. This phase 1 SBIR Final Report summarize Karta Technologies research involving the development of an innovative laser coating technology for metal casting dies. The process involves depositing complex protective coatings of nanocrystalline powders of TiC followed by a laser shot peening. The results indicate a significant improvement in corrosion and erosion resistance in molten aluminum for H13 die casting die steels. The laser-coated samples also showed improved surface finish, a homogeneous and uniform coating mircrostructure. The technology developed in this research can have a significant impact on the casting industry by saving the material costs involved in replacing dies, reducing downtime and improving the quality.
Date:
October 18, 1999
Creator:
Gonvindaraju, Madhav Rao
Object Type:
Report
System:
The UNT Digital Library
Experimental Studies of Plasma Fluctuations Using Electron Cyclotron Fluctuations on the Texas Experimental Tokamak
Reports poloidal asymmetry in the electron temperature fluctuations.
Date:
October 18, 1999
Creator:
Gandy, Rex
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Monday, October 18, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 18, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Funding Gaps: A Brief Overview
This report briefly discusses federal funding gaps. The routine activities of most federal agencies are funded annually by one or more of the 13 regular appropriations bills. When action on the regular appropriations bills is delayed, a continuing resolution (CR) is used to provide interim funding. During the past 48 years, CRs have been enacted for all but four fiscal years (FY1953, 1989, 1995, and 1997). For some fiscal years, a series of as many as six CRs have been enacted.
Date:
October 18, 1999
Creator:
Keith, Robert
Object Type:
Report
System:
The UNT Digital Library
Federal Statutes and Executive Orders Applicable to the Public Buildings Service's Leasing Program
Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO identified the legislative and administrative requirements that apply to the Public Buildings Service's (PBS) leasing program and provided information on the mechanisms that PBS has established to implement and comply with these federal statutes and executive orders."
Date:
October 18, 1999
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
FGB: A Graphical and Haptic User Interface for Creating Graphical, Haptic User Interfaces
The emerging field of haptics represents a fundamental change in human-computer interaction (HCI), and presents solutions to problems that are difficult or impossible to solve with a two-dimensional, mouse-based interface. To take advantage of the potential of haptics, however, innovative interaction techniques and programming environments are needed. This paper describes FGB (FLIGHT GHUI Builder), a programming tool that can be used to create an application specific graphical and haptic user interface (GHUI). FGB is itself a graphical and haptic user interface with which a programmer can intuitively create and manipulate components of a GHUI in real time in a graphical environment through the use of a haptic device. The programmer can create a GHUI without writing any programming code. After a user interface is created, FGB writes the appropriate programming code to a file, using the FLIGHT API, to recreate what the programmer created in the FGB interface. FGB saves programming time and increases productivity, because a programmer can see the end result as it is created, and FGB does much of the programming itself. Interestingly, as FGB was created, it was used to help build itself. The further FGB was in its development, the more easily and quickly it …
Date:
October 18, 1999
Creator:
Anderson, Thomas G.; Breckenridge, Arthurine & Davidson, George S.
Object Type:
Article
System:
The UNT Digital Library
Hague Convention Implementation Legislation: Comparison of H.R. 2909, S. 682, and Administration Draft
None
Date:
October 18, 1999
Creator:
Weimer, Douglas Reid
Object Type:
Report
System:
The UNT Digital Library
Identification of the Permeability Field of Porous Medium from the Injection of Passive Tracer
In this paper, a method was proposed which focused on the question, namely on how to invert data on arrival times at various (and numerous) points in the porous medium to map the permeability field. The method, elements of which were briefly described in (9), is based on a direct inversion of the data, as will be described below , rather than on the optimization of initial random (or partly constrained) guesses of the permeability field, to match the available data, as typically done in the analogous problem of pressure transients. The direct inversion is based on two conditions, that Darcy's law for single-phase flow in porous media is valid, and that dispersion of the concentration of the injected tracer is negligible. While the former is a well-accepted premise, the latter depends on injection and field conditions, and may not necessarily apply in all cases. Based on these conditions, we formulate a nonlinear boundary value problem, the coefficients of which depend on the experimental arrival time data.
Date:
October 18, 1999
Creator:
Zhan, Lang & Yortsos, Y.C.
Object Type:
Report
System:
The UNT Digital Library
Investigation of the Electronic Properties of Cadmium Zinc Telluride (CZT) Detectors using a Nuclear Microprobe
The electronic transport properties of Cadmium Zinc Telluride (CZT) determine the charge collection efficiency (i.e. the signal quality) of CZT detectors. These properties vary on both macroscopic and microscopic scale and depend on the presence of impurities and defects introduced during the crystal growth. Ion Beam Induced Charge Collection (IBICC) is a proven method to measure the charge collection efficiency. Using an ion microbeam, the charge collection efficiency can be mapped with submicron resolution, and the map of electronic properties (such as drift length) can be calculated from the measurement. A more sophisticated version of IBICC, the Time Resolved IBICC (TRIBICC) allows them to determine the mobility and the life time of the charge carriers by recording and analyzing the transient waveform of the detector signal. Furthermore, lateral IBICC and TRIBICC can provide information how the charge collection efficiency depends on the depth where the charge carriers are generated. This allows one to deduce information on the distribution of the electric field and transport properties of the charge carriers along the detector axis. IBICC and TRIBICC were used at the Sandia microbeam facility to image electronic properties of several CZT detectors. From the lateral TRIBICC measurement the electron and hole …
Date:
October 18, 1999
Creator:
Brunett, Bruce A.; Doyle, Barney L.; James, Ralph B.; Vizkelethy, Gyorgy & Walsh, David S.
Object Type:
Article
System:
The UNT Digital Library
Lone Star Gazette (Dublin, Tex.), Vol. 1, No. 4, Ed. 1 Monday, October 18, 1999
Semimonthly newspaper from Dublin, Texas that includes area information on topics such as history, entertainment, reviews, and recipes along with advertising.
Date:
October 18, 1999
Creator:
Kestner, Laura
Object Type:
Newspaper
System:
The Portal to Texas History
Making the most of residential photovoltaic systems
Making the Most of Residential Photovoltaic Systems, was recently produced by NREL Communications and Public Affairs. It showcases a demonstration project in Florida that produced some remarkable results by incorporating both energy efficiency and photovoltaic systems into newly built housing. The brochure points up the benefits of making wise personal choices about energy use, and how large-scale use of advanced energy technologies can benefit the nation. This is one of a series of brochures that presents stimulating information about photovoltaics, with a goal of helping to push this technology into the power-generation mix in different utilities, communities, and states.
Date:
October 18, 1999
Creator:
Moon, S.; Parker, D. & Hayter, S.
Object Type:
Book
System:
The UNT Digital Library
Measurements of alkali concentrations in an oxygen-natural gas-fired soda-lime-silica glass furnace
Sodium species vaporized from melting batch and molten glass in tank furnaces are the principal agents of corrosion of superstructure refractory and main contributors to emissions of particulate matter from glass melting. The use of oxygen in place of air for combustion of natural gas reduces particulate emissions, but is thought to accelerate corrosion in some melting tanks. Methods for measuring sodium are under investigation as means for identifying the volatilization, transport, and deposition mechanisms and developing strategies for control. Three separate methods were used to measure the concentrations of sodium species at various locations in an oxygen-natural gas-fired soda-lime-silica glass melting tank. Measurements were made inside the furnace using the absorption of visible light and in the flue duct using Laser-Induced Breakdown Spectroscopy (LIBS). Measurements in both the furnace and flue were also made by withdrawing and analyzing samples of the furnace gas.
Date:
October 18, 1999
Creator:
Buckley, S. G.; Walsh, P. M.; Hahn, D. w.; Gallagher, R. J.; Misra, M. K.; Brown, J. T. et al.
Object Type:
Article
System:
The UNT Digital Library