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204
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22
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19
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17
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The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 39, Ed. 1 Thursday, March 19, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 19, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 76, Ed. 1 Tuesday, May 19, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
May 19, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 98, Ed. 1 Friday, June 19, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 19, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 137, Ed. 1 Wednesday, August 19, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 19, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Daily Chickasha Star (Chickasha, Okla.), Vol. 97, No. 155, Ed. 1 Saturday, September 19, 1998
Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 19, 1998
Creator:
Settle, David
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Dallas Voice (Dallas, Tex.), Vol. 15, No. 8, Ed. 1 Friday, June 19, 1998
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:
June 19, 1998
Creator:
Vercher, Dennis
Object Type:
Newspaper
System:
The UNT Digital Library
DART transportation and maintenance employees feed the homeless Saturday, October 24
News release about a charitable "Feed the Homeless" lunch sponsored by DART employees.
Date:
October 19, 1998
Creator:
Lyons, Morgan
Object Type:
Text
System:
The Portal to Texas History
Design of high density gamma-phase uranium alloys for LEU dispersion fuel applications.
Uranium alloys are candidates for the fuel phase in aluminum matrix dispersion fuels requiring high uranium loading. Certain uranium alloys have been shown to have good irradiation performance at intermediate burnup. Previous studies have shown that acceptable fission gas swelling behavior and fuel-aluminum interaction is possible only if the fuel alloy can be maintained in the high temperature body-centered-cubic {gamma}-phase during fabrication and irradiation, i.e., at temperatures at which {alpha}-U is the equilibrium phase. Transition metals in Groups V through VIII are known to allow metastable retention of the gamma phase below the equilibrium isotherm. These metals have varying degrees of effectiveness in stabilizing the gamma phase. Certain alloys are metastable for very long times at the relatively low fuel temperatures seen in research reactor operation. In this paper, the existing data on the gamma stability of binary and ternary uranium alloys is analyzed. The mechanism and kinetics of decomposition of the gamma phase are assessed with the help of metal alloy theory. Alloys with the highest possible uranium content, good gamma-phase stability, and good neutronic performance are identified for further metallurgical studies and irradiation tests. Results from theory will be compared with experimentally generated data.
Date:
October 19, 1998
Creator:
Hofman, G. L.
Object Type:
Article
System:
The UNT Digital Library
Design requirements document for Project W-465, immobilized low-activity waste interim storage
The scope of this Design Requirements Document (DRD) is to identify the functions and associated requirements that must be performed to accept, transport, handle, and store immobilized low-activity waste (ILAW) produced by the privatized Tank Waste Remediation System (TWRS) treatment contractors. The functional and performance requirements in this document provide the basis for the conceptual design of the TWRS ILAW Interim Storage facility project and provides traceability from the program level requirements to the project design activity. Technical and programmatic risk associated with the TWRS planning basis are discussed in the Tank Waste Remediation System Decisions and Risk Assessment (Johnson 1994). The design requirements provided in this document will be augmented by additional detailed design data documented by the project.
Date:
May 19, 1998
Creator:
Burbank, D. A.
Object Type:
Report
System:
The UNT Digital Library
Determination of the Built-in Electric Field near Contacts to Polycrystalline CuInSe{sub 2} - Probing Local Charge Transport Properties by Photomixing
The built-in electric field in polycrystalline CuInSe{sub 2} (CIS) near gold co-planar contacts was quantitatively revealed for the first time by the photomixing technique. A He-Ne laser beam was focused locally on the CIS sample near one of its contact. While both dc dark and photo-currents showed ohmic behavior, the high frequency ac current was non-zero for zero applied dc bias, which reveals a built-in electric field of {approx}1000V/cm. The capability of the photomixing technique to probe local charge transport properties is expected to be very useful for, e.g., the quantitative evaluation of the quality of ohmic contacts and the investigation of electric field induced p-n junction formation in CIS and related materials.
Date:
November 19, 1998
Creator:
Tang, Y.; Dong, S.; Sun, G. S.; Braunstein, R. & von Roedern, B.
Object Type:
Article
System:
The UNT Digital Library
Development of A Thin Film Crystalline Silicon Solar Cell
A new design for a single junction, thin film Si solar cell is presented. The cell design is compatible with low-temperature processing required for the use of a low-cost glass substrate, and includes effective light trapping and impurity gettering. Elements of essential process steps are discussed.
Date:
November 19, 1998
Creator:
Sopori, B.; Chen, W. & Zhang, Y.
Object Type:
Article
System:
The UNT Digital Library
Development of nondestructive evaluation methods for structural ceramics.
During the past year, the focus of our work on nondestructive evaluation (NDE) methods was on the development and application of these methods to technologies such as ceramic matrix composite (CMC) hot-gas filters, CMC high-temperature heat exchangers, and CMC ceramic/ceramic joining. Such technologies are critical to the ''Vision 21 Energy-Plex Fleet'' of modular, high-efficiency, low-emission power systems. Specifically, our NDE work has continued toward faster, higher sensitivity, volumetric X-ray computed tomographic imaging with new amorphous silicon detectors to detect and measure axial and radial density variations in hot-gas filters and heat exchangers; explored the potential use of high-speed focal-plane-array infrared imaging technology to detect delaminations and variations in the thermal properties of SiC/SiC heat exchangers; and explored various NDE methods to characterize CMC joints in cooperation with various industrial partners. Work this year also addressed support of Southern Companies Services Inc., Power Systems Development Facility, where NDE is needed to assess the condition of hot-gas candle filters. This paper presents the results of these efforts.
Date:
August 19, 1998
Creator:
Ellingson, W. A.
Object Type:
Article
System:
The UNT Digital Library
Development of practical damage-mapping and inspection systems
We have developed and are continuing to refine semi-automated technology for the detection and inspection of surface and bulk defects and damage in large laser optics Different manifestations of the DAMOCLES system (Damage and Artifact Mapping Of Coherent-Laser-Exposed Substrates) provide an effective and economical means of being able to detect, map and characterize surface and bulk defects which may become precursors of massive damage in optics when subjected to high-fluence laser irradiation Subsequent morphology and evolution of damage due to laser irradiation can be tracked efficiently The strength of the Damocles system is that it allows for immediate visual observation of defects in an entire optic, which can range up to l-meter dimensions, while also being able to provide digital map and magnified images of the defects with resolutions better than 5 µm.
Date:
August 19, 1998
Creator:
Rainer, F.
Object Type:
Article
System:
The UNT Digital Library
Domain decomposition methods for parallel laser-tissue models with Monte Carlo transport
Achieving parallelism in simulations that use Monte Carlo transport methods presents interesting challenges. For problems that require domain decomposition, load balance can be harder to achieve. The Monte Carlo transport package may have to operate with other packages that have different optimal domain decompositions for a given problem. To examine some of these issues, we have developed a code that simulates the interaction of a laser with biological tissue; it uses a Monte Carlo method to simulate the laser and a finite element model to simulate the conduction of the temperature field in the tissue. We will present speedup and load balance results obtained for a suite of problems decomposed using a few domain decomposition algorithms we have developed.
Date:
October 19, 1998
Creator:
Alme, H.J.; Rodrique, G. & Zimmerman, G.
Object Type:
Article
System:
The UNT Digital Library
Drying radioactive wastewater salts using a thin film dryer
This paper describes the operational experience in drying brines generated at a radioactive wastewater treatment facility. The brines are composed of aqueous ammonium sulfate/sodium sulfate and aqueous sodium nitrate/sodium sulfate, The brine feeds receive pretreatment to preclude dryer bridging and fouling. The dryer products are a distillate and a powder. The dryer is a vertical thin film type consisting of a steam heated cylinder with rotor. Maintenance on the dryer has been minimal. Although many operability problems have had to be overcome, dryer performance can now be said to be highly reliable.
Date:
March 19, 1998
Creator:
Scully, D. E.
Object Type:
Article
System:
The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 8, No. 25, Ed. 1 Thursday, February 19, 1998
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
February 19, 1998
Creator:
Wright, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Citizen (Dublin, Tex.), Vol. 8, No. 29, Ed. 1 Thursday, March 19, 1998
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
March 19, 1998
Creator:
Wright, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Citizen (Dublin, Tex.), Vol. 9, No. 12, Ed. 1 Thursday, November 19, 1998
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
November 19, 1998
Creator:
Wright, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Duval County Picture (San Diego, Tex.), Vol. 13, No. 33, Ed. 1 Wednesday, August 19, 1998
Weekly newspaper from San Diego, Texas that includes local, state, and national news along with advertising.
Date:
August 19, 1998
Creator:
Cardenas, Alfredo E.
Object Type:
Newspaper
System:
The Portal to Texas History
East Asia and the Pacific: Issues at the End of the 105th Congress
None
Date:
November 19, 1998
Creator:
Sutter, Robert G.
Object Type:
Report
System:
The UNT Digital Library
The Eastern Statesman (Wilburton, Okla.), Vol. 74, No. 7, Ed. 1 Thursday, November 19, 1998
Biweekly student newspaper from Eastern Oklahoma State College in Wilburton, Oklahoma that includes local, state, and campus news along with advertising.
Date:
November 19, 1998
Creator:
Rock, Greg & Prentice, Russell
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Economics and the evaluation of publicly funded energy R and D
There are three major areas in which economics can contribute to the evaluation of federal R and D: assessment of net benefits, ex ante expected as well as ex post realized; tailoring of R and D portfolios to policy goals; and guiding the contractual organization of R and D production. Additionally, evaluation of R and D and scientific activity tend to be distinctly retrospective, principally because of the long lags between the initial production activity and the observability of consequences. Extending the purview of economic evaluation of R and D, they find ample opportunity for evaluation that can inform current R and D management practice. The conduct of R and D is organized through a series of explicit and implicit contracts designed to elicit long-term commitments by some agents while attempting to limit the commitment by others. It is natural to consider the efficiency with which R and D is conducted as a subject for economic inquiry, although in practice such inquiries generally are restricted to accounting exercises. In evaluating the efficiency with which R and D is done, the current ordinary practice is to look at labor rates and equipment and materials prices while considering quantities of those items …
Date:
October 19, 1998
Creator:
Jones, D.W. & Paik, I.K.
Object Type:
Article
System:
The UNT Digital Library
Education Savings Accounts for Elementary and Secondary Education
None
Date:
June 19, 1998
Creator:
Lyke, Bob
Object Type:
Report
System:
The UNT Digital Library
Effect of divertor geometry on plasma detachment in DIII-D
This paper explores the physics of the recently installed Radiative Divertor Plasma divertor (RDP) in DIII-D through the use of UEDGE simulation with experimentally derived plasma parameters. The RDP is a nearly closed baffle and cryopumping system in the upper divertor of DIII-D. [l] One measure of the effectiveness of the RDP is the achievement of a detached plasma with a lower core density than in the open divertor (present in the lower divertor in DIII-D). Plasma detachment, observed on all diverted tokamaks, is a change in the plasma state which results in a decrease in both the ion current and heat load on the divertor plate. These reductions together with the related drop in electron temperature are important for divertor design in high power devices such as ITER, in which detached operation is assumed [2]. Both UEDGE modeling and DIII-D experiments show a reduction of 25% to 50% in the core density necessary for plasma detachment in the RDP compared to the open divertor.
Date:
May 19, 1998
Creator:
Wolf, N. S., Dickinson College, LLNL
Object Type:
Article
System:
The UNT Digital Library