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Altus Times (Altus, Okla.), Vol. 99, No. 237, Ed. 1 Wednesday, December 16, 1998
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, December 16, 1998
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Atmospheric chemistry effects of the 1998 Mexican/Central American fires measured in central New Mexico USA.
Atmospheric effects from large fires have received a great deal of interest recently, especially when the fires have the potential to effect human health when the plumes are transported long distances over areas of high population density. Examples are the recent large fires in Southeast Asia in 1997 (1) and the wildfires occurring in southern Mexico and Central America that were manifested in decreased visibility and high aerosol concentrations in the United States at distances of 2500-4000 km from the fires. In addition to fine aerosols, these biomass fires have the potential to produce and transport large quantities of oxygenated organic species such as aldehydes, ketones and carboxylic acids, hydrocarbons, and sulfate and nitrate species. Most of the literature reports dealing with products of biomass burning have been related to fireplace and wood burning stove emissions (2,3) and with local effects from forest fires(4). The recent super-large fires occurring in Indonesia and Mexico/Central America also bring about the issue of atmospheric reactivity because long-range transport affords long reaction times for photochemical reactions, wet and dry deposition and surface reactions on the aerosol particles. The smoke/haze conditions prompted considerable concern among the general population in New Mexico regarding health hazards and …
Date:
December 16, 1998
Creator:
Popp, C. J.
Object Type:
Article
System:
The UNT Digital Library
Bank Loan Denial for Nuclear Proliferation under Section 102(b) of the Arms Export Control Act as Applicable to India and Pakistan
This report discusses Bank Loan Denial for Nuclear Proliferation under Section 102(b) of the Arms Export Control Act as Applicable to India and Pakistan.
Date:
December 16, 1998
Creator:
Murphy, M. Maureen
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 40, Ed. 1 Wednesday, December 16, 1998
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 103, No. 100, Ed. 1 Wednesday, December 16, 1998
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Effects of alpha decay damage on the structure and leaching rates of a glass-bonded ceramic high level waste form.
Argonne National Laboratory has developed a glass-bonded sodalite ceramic waste form to immobilize fission products and plutonium that accumulate during the electrometallurgical conditioning of spent nuclear fuel. To investigate the effects of alpha decay damage on the structure and leaching characteristics of the ceramic material, {sup 238}Pu has been incorporated into the ceramic waste form. The {sup 238}Pu,with its higher specific activity, significantly increases the rate of alpha damage to the waste form. Long term studies have begun with periodic examination of the {sup 238}Pu loaded ceramic material. A number of characterization techniques are used to study the alpha decay damage on the structure of the waste form. In addition, PCT type leachate studies will be performed to determine the effect of alpha decay damage on the durability of the ceramic waste form. Preliminary results from this study are presented.
Date:
December 16, 1998
Creator:
Frank, S. M.
Object Type:
Article
System:
The UNT Digital Library
Enhancement of Equilibrium Shift in Dehydrogenation Reactions Using a Novel Membrane Reactor Semi-Annual Report: March-September 1998
Electroless deposition of palladium thin-films on a surface of microporous ceramic substrate has been used to develop a new class of perm-selective inorganic membrane. In the last report, we presented a numerical method to analyze the stability in single-stage gas permeation. In this reporting period, we present our modeling work on dehydrogenation of cyclohexane in Pd-Ceramic membrane reactor. A model for studying dehydrogenation of cyclohexane in a membrane reactor is developed. Radial diffusion is considered to account for the concentration gradient in radial direction due permeation through the membrane. The model equations are derived for systems with reaction and without reaction. In the non-reaction case, a mixture of argon, benzene, cyclohexane, and hydrogen is used in the reaction side and argon is used as sweep gas in the separation side. Currently, we are working on the details of numerical solution of the model equations.
Date:
December 16, 1998
Creator:
Ilias, Shamsuddin & King, Franklin G.
Object Type:
Report
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, December 16, 1998
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Extending dry storage of spent LWR fuel for 100 years.
Because of delays in closing the back end of the fuel cycle in the U.S., there is a need to extend dry inert storage of spent fuel beyond its originally anticipated 20-year duration. Many of the methodologies developed to support initial licensing for 20-year storage should be able to support the longer storage periods envisioned. This paper evaluates the applicability of existing information and methodologies to support dry storage up to 100 years. The thrust of the analysis is the potential behavior of the spent fuel. In the USA, the criteria for dry storage of LWR spent fuel are delineated in 10 CFR 72 [1]. The criteria fall into four general categories: maintain subcriticality, prevent the release of radioactive material above acceptable limits, ensure that radiation rates and doses do not exceed acceptable levels, and maintain retrievability of the stored radioactive material. These criteria need to be considered for normal, off-normal, and postulated accident conditions. The initial safety analysis report submitted for licensing evaluated the fuel's ability to meet the requirements for 20 years. It is not the intent to repeat these calculations, but to look at expected behavior over the additional 80 years, during which the temperatures and radiation …
Date:
December 16, 1998
Creator:
Einziger, R. E.
Object Type:
Article
System:
The UNT Digital Library
First-principles study of {pi}-bonded (100) planar defects in diamond.
A periodic density functional study of the high-energy {pi}-bonded (100) stacking fault in diamond that can serve as a prototype of a twist grain boundary has been carried out. Information on formation energies, geometries and the electronic structure has been obtained. A single point electronic structure calculation of a {Sigma}5 twist grain boundary based on the geometry taken from a molecular dynamics simulation has also been performed.
Date:
December 16, 1998
Creator:
Zapol, P.
Object Type:
Article
System:
The UNT Digital Library
Fuel-cycle greenhouse gas emissions impacts of alternative transportation fuels and advanced vehicle technologies.
At an international conference on global warming, held in Kyoto, Japan, in December 1997, the United States committed to reduce its greenhouse gas (GHG) emissions by 7% over its 1990 level by the year 2012. To help achieve that goal, transportation GHG emissions need to be reduced. Using Argonne's fuel-cycle model, I estimated GHG emissions reduction potentials of various near- and long-term transportation technologies. The estimated per-mile GHG emissions results show that alternative transportation fuels and advanced vehicle technologies can help significantly reduce transportation GHG emissions. Of the near-term technologies evaluated in this study, electric vehicles; hybrid electric vehicles; compression-ignition, direct-injection vehicles; and E85 flexible fuel vehicles can reduce fuel-cycle GHG emissions by more than 25%, on the fuel-cycle basis. Electric vehicles powered by electricity generated primarily from nuclear and renewable sources can reduce GHG emissions by 80%. Other alternative fuels, such as compressed natural gas and liquefied petroleum gas, offer limited, but positive, GHG emission reduction benefits. Among the long-term technologies evaluated in this study, conventional spark ignition and compression ignition engines powered by alternative fuels and gasoline- and diesel-powered advanced vehicles can reduce GHG emissions by 10% to 30%. Ethanol dedicated vehicles, electric vehicles, hybrid electric vehicles, and …
Date:
December 16, 1998
Creator:
Wang, M. Q.
Object Type:
Article
System:
The UNT Digital Library
Kingdom of Saudi Arabia Solar Radiation Atlas
This atlas provides a record of monthly mean solar radiation generated by a Climatological Solar Radiation model, using quasi-climatological inputs of cloud cover, aerosol optical depth, precipitable water vapor, ozone, surface albedo, and atmospheric pressure.
Date:
December 16, 1998
Creator:
National Renewable Energy Laboratory (U.S.)
Object Type:
Book
System:
The UNT Digital Library
[Letter from Randy Mallory to Lori Moffatt, December 16, 1998]
Letter from Randy Mallory to Lori Moffatt dated December 16, 1998 regarding a Texas Highways article about mail-order catalogs.
Date:
December 16, 1998
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
Linking ab initio energetics to experiment: kinetic Monte Carlo simulation of transient enhanced diffusion of B in Si
We have developed a kinetic Monte Carlo (kMC) simulator that links atomic migration and binding energies determined primarily from first principles calculations to macroscopic phenomena and laboratory time scales. Input for the kMC simulation is obtained from a combination of ab initio planewave pseudopotential calculations, molecular dynamics simulations, and experimental data. The simulator is validated against an extensive series of experimental studies of the diffusion of B spikes in self-implanted Si. The implant energy, dose, and dose rate, as well as the detailed thermal history of the sample, are included. Good agreement is obtained with the experimental data for temperatures between 750 and 950 C and times from 15 to 255 s. At 1050o C we predict too little diffusion after 105 s compared to experiment: apparently, some mechanism which is not adequately represented by our model becomes important at this temperature. Below 1050o C, the kMC simulation produces a complete description over macroscopic time scales of the atomic level diffusion and defect reaction phenomena that operate during the anneals. This simulator provides a practical method for predicting technologically interesting phenomena, such as transient enhanced diffusion of B, over a wide range of conditions, using energetics determined from first-principles approaches.
Date:
December 16, 1998
Creator:
Caturla, M. J.; Diaz de la Rubia, T.; Griffin, P. B.; Johnson, M. C.; Theiss, S. & Ural, A.
Object Type:
Article
System:
The UNT Digital Library
Mannford Eagle (Mannford, Okla.), Vol. 17, No. 42, Ed. 1 Wednesday, December 16, 1998
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Retherford, Bill R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mannford Star (Mannford, Okla.), Vol. 5, No. 15, Ed. 1 Wednesday, December 16, 1998
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mercedes Enterprise (Mercedes, Tex.), Vol. 86, No. 50, Ed. 1 Wednesday, December 16, 1998
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Microstructure and leaching characteristics of a technetium containing metal waste form.
Argonne National Laboratory is developing an electrometallurgical treatment for spent fuel from the experimental breeder reactor II. A product of this treatment process is a metal waste form that incorporates the stainless steel cladding hulls, zirconium from the fuel and the fission products that are noble to the process, i.e., Tc, Ru, Pd, Rh, Ag. The nominal composition of this waste form is stainless steel/15 wt% zirconium 1-4 wt% noble metal fission products. The behavior of technetium is of particular importance from a disposal point of view for this waste form due to its long half life, 2. 14E5 years, and its mobility in groundwater. To address these concerns a limited number of spiked metal waste forms were produced containing Tc. These surrogate waste forms were then studied using scanning electron microscopy and selected leaching tests.
Date:
December 16, 1998
Creator:
Johnson, S. G.
Object Type:
Article
System:
The UNT Digital Library
Midweek Picture (San Diego, Tex.), Vol. 13, No. 66, Ed. 1 Wednesday, December 16, 1998
Semiweekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date:
December 16, 1998
Creator:
Cardenas, Alfredo E.
Object Type:
Newspaper
System:
The Portal to Texas History
A multigrid strategy for accelerating steady-state computations of waves propagating with curvature dependent speeds
A multigrid strategy is developed for accelerating the steady state computations of waves propagating with curvature dependent speeds. This will allow the rapid computation of a burn table. In a high explosive material, the creation of a burn table will allow the elimination of solving chemical reaction ODEs and feed in source terms to the reactive flow equations for solution of the system of ignition of the high explosive material. Standard iterative methods show a quick reduction of the residual followed by a slow final convergence to the solution at high iterations. Such systems are excellent choices for the use of multigrid methods to speed up convergence, even on a nonlinear system such as this. Numerical steady-state solutions to the eikonal equation on a rectangular grid are conducted. Results are presented for a square grid in 2D and a cubic grid in 3D using a Runge-Kutta time iteration for the smoothing operator until steady-state is reached.
Date:
December 16, 1998
Creator:
Rochez, J C
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Seat Belts]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at 6pm.
Date:
December 16, 1998, 6:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Ninnekah Times II (Ninnekah, Okla.), Vol. 6, No. 5, Ed. 1 Wednesday, December 16, 1998
Monthly newspaper from Ninnekah, Oklahoma that includes news and information from Ninnekah Public Schools along with advertising.
Date:
December 16, 1998
Creator:
Ninnekah High School Computer Word Processing Class
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Ozone risk assessment utilities (ORAMUS) user's manual and tutorial : Volume 1, Acute health endpoints.
The primary purpose of this manual is to provide instructions on how to install and use the ORAMUS (Ozone Risk AssessMent UtilitieS) software. ORAMUS is a DOS-based software system that allows you to calculate and view risk estimates for health effects attributable to short- and long-term exposure to tropospheric ozone. The system combines exposure estimates with exposure-response relationships and then calculates and displays estimates of the overall risk in the form of probability distributions. ORAMUS allows you to select from three basic models: headcount risk, benchmark risk, and hospital admissions. It calculates a wide range of risk results for 27 air quality scenarios, 9 urban areas, 33 acute health endpoints, 4 chronic health endpoints, and 3 populations of interest. This manual is a tutorial designed to guide you through a series of steps that will familiarize you with the features of the system. The manual consists of two volumes. Volume 1 addresses acute health endpoints, and Volume 2 covers chronic health endpoints. Acute results were used during the National Ambient Air Quality Standards review process for ozone. Chronic results were not used.
Date:
December 16, 1998
Creator:
Clemmons, M. A.; Jusko, M. J. & Whitfield, R. G.
Object Type:
Report
System:
The UNT Digital Library