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Advanced Processing of CdTe- and CuInxGa1-xSe2-Based Solar Cells: Final Report: 18 April 1995 - 31 May 1998
This report summarizes work performed by the University of South Florida Department of Electrical Engineering under this subcontract. The Cadmium telluride(CdTe) portion of this project deals with the development of high-efficiency thin-filmed CdTe solar cells using fabrication techniques that are suitable for manufacturing environments.
Date:
January 13, 1999
Creator:
Morel, D. L.; Ferekides, C. S.; Bhatt, R.; Jayapalan, A.; Komin, V.; Lin, H. et al.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 99, No. 260, Ed. 1 Wednesday, January 13, 1999
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Cole, Carol
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Alvin Advertiser (Alvin, Tex.), Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Army Medium Trucks: Information on Delivery Delays and Corrosion Problems
A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Army's Family of Medium Tactical Vehicles (FMTV) program, focusing on: (1) the causes and effects of the contractor's delays in delivering acceptable trucks; and (2) the Army's actions to mitigate corrosion problems on FMTV trucks."
Date:
January 13, 1999
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 64, Ed. 1 Wednesday, January 13, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 104, No. 4, Ed. 1 Wednesday, January 13, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier (The Colony, Tex.), Vol. 2, No. 10, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Chiniewicz, Susan
Object Type:
Newspaper
System:
The Portal to Texas History
Corrosion behavior of pyroclore-rich titanate ceramics for plutonium disposition ; impurity effects.
The baseline ceramic contains Ti, U, Ca, Hf, Gd, and Ce, and is made up of only four phases, pyrochlore, zirconolite, rutile, and brannerite. The impurities present in the three other ceramics represent impurities expected in the feed, and result in different phase distributions. The results from 3 day, 90 C MCC-1 tests with impurity ceramics were significantly different than the results from tests with the baseline ceramic. Overall, the addition of impurities to these titanate ceramics alters the phase distributions, which in turn, affects the corrosion behavior.
Date:
January 13, 1999
Creator:
Bakel, A. J.
Object Type:
Article
System:
The UNT Digital Library
Corrosion behavior of stainless steel-zirconium alloy waste forms.
Stainless steel-zirconium (SS-Zr) alloys are being considered as waste forms for the disposal of metallic waste generated during the electrometallurgical treatment of spent nuclear fuel. The baseline waste form for spent fuels from the EBR-II reactor is a stainless steel-15 wt.% zirconium (SS-15Zr) alloy. This article briefly reviews the microstructure of various SS-Zr waste form alloys and presents results of immersion corrosion and electrochemical corrosion tests performed on these alloys. The electrochemical tests show that the corrosion behavior of SS-Zr alloys is comparable to those of other alloys being considered for the Yucca Mountain geologic repository. The immersion tests demonstrate that the SS-Zr alloys are resistant to selective leaching of fission product elements and, hence, suitable as candidates for high-level nuclear waste forms.
Date:
January 13, 1999
Creator:
Abraham, D. P.
Object Type:
Article
System:
The UNT Digital Library
The Cuero Record (Cuero, Tex.), Vol. 105, No. 2, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Cuero, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Dallas City Council Meeting: January 13, 1999
Recording of a Dallas City Council meeting including discussions, votes, and other proceedings.
Date:
January 13, 1999
Creator:
Dallas (Tex.). City Council.
Object Type:
Video
System:
The Portal to Texas History
Design of a next-generation regional weather research and forecast model.
The Weather Research and Forecast (WRF) model is a new model development effort undertaken jointly by the National Center for Atmospheric Research (NCAR), the National Oceanic and Atmospheric Administration (NOAA), and a number of collaborating institutions and university scientists. The model is intended for use by operational NWP and university research communities, providing a common framework for idealized dynamical studies, fill physics numerical weather prediction, air-quality simulation, and regional climate. It will eventually supersede large, well-established but aging regional models now maintained by the participating institutions. The WRF effort includes re-engineering the underlying software architecture to produce a modular, flexible code designed from the outset to provide portable performance across diverse computing architectures. This paper outlines key elements of the WRF software design.
Date:
January 13, 1999
Creator:
Michalakes, J.
Object Type:
Article
System:
The UNT Digital Library
Developing a derivative-enhanced object-oriented toolkit for scientific computations.
We describe the development of a differentiated version of PETSC, an object-oriented toolkit for the parallel solution of scientific problems modeled by partial differential equations. Traditionally, automatic differentiation tools are applied to scientific applications to produce derivative-augmented code, which can then be used for sensitivity analysis, optimization, or parameter estimation. Scientific toolkits play an increasingly important role in developing large-scale scientific applications. By differentiating PETSC, we provide accurate derivative computations in applications implemented using the toolkit. In addition to using automatic differentiation to generate a derivative enhanced version of PETSC, we exploit the component-based organization of the toolkit, applying high-level mathematical insight to increase the accuracy and efficiency of derivative computations.
Date:
January 13, 1999
Creator:
Hovland, P.
Object Type:
Article
System:
The UNT Digital Library
Development of an Ingestion Pathway Model for AXAIRQ
AXAIRQ is a dose mode code used for prospective accident assessment at the Savannah River Site and is primarily used to show regulatory compliance. For completeness of pathway analysis, an ingestion model, AXINGST, has been developed for use with, and incorporation in, AXAIRQ. Currently available ingestion models were referenced as a basis for AXINGST. AXINGST calculates a conservative ingestion dose following an atmospheric release of radionuclides and includes site specific variables where applicable.
Date:
January 13, 1999
Creator:
Simpkins, A. A.
Object Type:
Report
System:
The UNT Digital Library
Discussion of DNAPL Migration through a Fractured Perching Layer
The visualization study of 1,1,1-trichloroethane (TCA) infiltration described by Stephens et al. (1998) was an elegant design, clearly demonstrating DNAPL behavior encountering a fractured perched layer. I question, however, their interpretation, stated in both abstract and conclusions, that rapid DNAPL penetration of the fracture was "in contrast to existing mathematical solutions of hydrostatic initial conditions and full saturation below the fracture." I also have a comment regarding the experimental conditions.
Date:
January 13, 1999
Creator:
Tuck, David M.
Object Type:
Article
System:
The UNT Digital Library
Electrochemical noise measurements of sustained microbially influenced pitting corrosion in a laboratory flow loop system.
Because of the chaotic nature of the corrosion process and the complexity of the electrochemical noise signals that are generated, there is no generally accepted method of measuring and interpreting these signals that allows the consistent detection and identification of sustained localized pitting (SLP) as compared to general corrosion. We have reexamined electrochemical noise analysis (ENA) of localized corrosion using different hardware, signal collection, and signal processing designs than those used in conventional ENA techniques. The new data acquisition system was designed to identify and monitor the progress of SLP by analyzing the power spectral density (PSD) of the trend of the corrosion current noise level (CNL) and potential noise level (PNL). Each CNL and PNL data point was calculated from the root-mean- square value of the ac components of current and potential fluctuation signals, which were measured simultaneously during a short time period. The PSD analysis results consistently demonstrated that the trends of PNL and CNL contain information that can be used to differentiate between SLP and general corrosion mechanisms. The degree of linear slope in the low-frequency portion of the PSD analysis was correlated with the SLP process. Laboratory metal coupons as well as commercial corrosion probes were …
Date:
January 13, 1999
Creator:
Lin, Y. J.
Object Type:
Article
System:
The UNT Digital Library
Exploiting existing software in libraries : successes, failures, and reasons why.
The PETSc (Portable Extensible Tools for Scientific computing) library arose from research into domain decomposition methods which require combining many different solutions in a single application. The initial efforts tried to use existing numerical software but had limited success. The problems include everything from faulty assumptions about the computing environment (e.g., how many processes there are) to implicit (yet deadly) global state. More recently, PETSC and PVODE have found a way to cooperate, and new techniques that exploit dynamically linked libraries offer a more general approach to interoperable components. The paper highlights some of the issues in building sharable component software and discussing mistakes still often made in designing, maintaining, documenting, and testing components.
Date:
January 13, 1999
Creator:
Gropp, W.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, January 13, 1999
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Gilmer Mirror (Gilmer, Tex.), Vol. 122, No. 4, Ed. 1 Wednesday, January 13, 1999
Semiweekly newspaper from Gilmer, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Overton, Mac
Object Type:
Newspaper
System:
The Portal to Texas History
Heat Transfer Modeling of Dry Spent Nuclear Fuel Storage Facilities
The present work was undertaken to provide heat transfer model that accurately predicts the thermal performance of dry spent nuclear fuel storage facilities. One of the storage configurations being considered for DOE Aluminum-clad Spent Nuclear Fuel (Al-SNF), such as the Material and Testing Reactor (MTR) fuel, is in a dry storage facility. To support design studies of storage options a computational and experimental program has been conducted at the Savannah River Site (SRS). The main objective is to develop heat transfer models including natural convection effects internal to an interim dry storage canister and to geological codisposal Waste Package (WP). Calculated temperatures will be used to demonstrate engineering viability of a dry storage option in enclosed interim storage and geological repository WP and to assess the chemical and physical behaviors of the Al-SNF in the dry storage facilities. The current paper describes the modeling approaches and presents the computational results along with the experimental data.
Date:
January 13, 1999
Creator:
Lee, Si Young
Object Type:
Article
System:
The UNT Digital Library
Illustrated Paperboy (Cleveland, Tex.), Vol. 6, No. 42, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Cleveland, Texas that includes local, county, and state news along with extensive advertising.
Date:
January 13, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Mannford Eagle (Mannford, Okla.), Vol. 17, No. 46, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
Retherford, Bill R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mannford Star (Mannford, Okla.), Vol. 5, No. 19, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mercedes Enterprise (Mercedes, Tex.), Vol. 87, No. 2, Ed. 1 Wednesday, January 13, 1999
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
January 13, 1999
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History