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Advanced Processing of CdTe- and CuInxGa1-xSe2-Based Solar Cells: Final Report: 18 April 1995 - 31 May 1998 (open access)

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.
System: The UNT Digital Library
Army Medium Trucks: Information on Delivery Delays and Corrosion Problems (open access)

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.
System: The UNT Digital Library
Development of an Ingestion Pathway Model for AXAIRQ (open access)

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.
System: The UNT Digital Library
Novel Computational Simulation of Redox Reactions Within a Metal Electrospray Emitter (open access)

Novel Computational Simulation of Redox Reactions Within a Metal Electrospray Emitter

To further both our fundamental understanding implications of the electrolytic nature of the electrospray and our understanding of the analytical ion source, in the context of electrospray mass spectrometry (ES-MS), a computational simulation of the oxidation of chemical species inside a metal emitter has been developed. The analysis code employs a boundary integral method for the solution of the Laplace equation for the electric potential and current, and incorporates standard activation and concentration polarization functions for the redox active species in the system to define the boundary conditions. The specific system modeled consisted of a 100 {mu}m i .d., inert metal capillary CHICN/H2O (90/10 V/V). ES emitter and a spray solution comprised of an analyte dissolved in Variable parameters included the concentration (i.e., 5, 10, 20, and 50 ~M) of the easily oxidized analyte ferrocene (Fe, dicyclopentadienyl iron) in the solution, and solution conductivities of 1.9, 3.8, and 7.6 x 107 Mho/cm. ES currents were on the order of 0.05 {mu}A and the flow rate was 5 @A_nin. Under these defined conditions, the two most prominent reactions at the emitter metakolution interface were assumed to be H20 oxidation (2H20 = 02 + 4H+ + 4e") and Fe oxidation (Fe = …
Date: January 13, 1999
Creator: Bullock, J. S., IV; Giles, G. E.; Gray, L. J. & Van Berkel, G. J.
System: The UNT Digital Library
Structure-Based Predictive Model for Coal Char Combustion (open access)

Structure-Based Predictive Model for Coal Char Combustion

Significant progress continued to be made during the past reporting quarter on both major technical tasks. During the reporting period at OSU, computational investigations were conducted of addition vs. abstraction reactions of H, O(3 P), and OH with monocyclic aromatic hydrocarbons. The potential energy surface for more than 80 unique reactions of H, O ( 3 P), and OH with aromatic hydrocarbons were determined at the B3LYP/6-31G(d) level of theory. The calculated transition state barriers and reaction free energies indicate that the addition channel is preferred at 298K, but that the abstraction channel becomes dominant at high temperatures. The thermodynamic preference for reactivity with aromatic hydrocarbons increases in the order O(3 P) < H < OH. Abstraction from six-membered aromatic rings is more facile than abstraction from five-membered aromatic rings. However, addition to five-membered rings is thermodynamically more favorable than addition to six-membered rings. The free energies for the abstraction and addition reactions of H, O, and OH with aromatic hydrocarbons and the characteristics of the respective transition states can be used to calculate the reaction rate constants for these important combustion reactions. Experimental work at Brown University on the effect of reaction on the structural evolution of different chars …
Date: January 13, 1999
Creator: Hadad, Christopher M.; Calo, Joseph M.; Essenhigh, Robert H. & Hurt, Robert H.
System: The UNT Digital Library
Molecular simulation of phase equilibria for complex fluids. Final report (open access)

Molecular simulation of phase equilibria for complex fluids. Final report

None
Date: February 13, 1999
Creator: Panagiotopoulos, A.Z.
System: The UNT Digital Library
Addendum to the Corrective Action Investigation Plan for Corrective Action Unit 447, Project Shoal Area, Nevada Subsurface Site, Revision 1, April 1999 (open access)

Addendum to the Corrective Action Investigation Plan for Corrective Action Unit 447, Project Shoal Area, Nevada Subsurface Site, Revision 1, April 1999

The report is an addendum to Chapter 6.0, ''Field Investigation,'' of the Corrective Action Investigation Plan for Corrective Action Unit 447: Project Shoal Area, Nevada Subsurface Site, DOE/NV--513. Sections 6.0 and 6.1 in DOE/NV--513 continue to stand, with the sections below following after them. These new sections represent information that was not available at the time DOE/NV--513 was issued.
Date: April 13, 1999
Creator: United States. Department of Energy. Nevada Operations Office.
System: The UNT Digital Library
Data Preparation and Analysis for Annex III, USA/PRC Cooperation in the Field of Atmospheric Trace Gases (open access)

Data Preparation and Analysis for Annex III, USA/PRC Cooperation in the Field of Atmospheric Trace Gases

The National Climatic Data Center (NCDC) has been a long-time and very active participant in the joint research program on the Greenhouse Effect created by the bilateral agreement Annex III to the Protocol on Fossil Energy Research and Development on Cooperation in the Field of Atmospheric Trace Gases. This agreement between the US Department of Energy (DOE) and the People's Republic of China, Chinese Academy of Sciences (CAS) has fostered a large amount of data set development and research (Riches et al., 1992) as well as science exchange between the two countries. Within the agreement there have been four basic tasks: (1) to analyze general circulation models, (2) to prepare, validate, and analyze data, (3) analyze the relationship between large scale and local climate, and (4) atmospheric trace gas measurements, particularly methane (Riches et al. 1992). Within this framework the NCDC has had two basic tasks in this program: to develop, validate, analyze and exchange long-term climate data sets suitable for analyzing past climate change, and to perform research into past climate change and linking large-scale and regional climates. Following is a brief review of NCDC's accomplishments in the project.
Date: April 13, 1999
Creator: Easterling, David R. & Karl, Thomas R.
System: The UNT Digital Library
Fast Flux Test Facility Asbestos Location Tracking Program (open access)

Fast Flux Test Facility Asbestos Location Tracking Program

Procedure Number HNF-PRO-408, revision 0, paragraph 1.0, ''Purpose,'' and paragraph 2.0, ''Requirements for Facility Management of Asbestos,'' relate building inspection and requirements for documentation of existing asbestos-containing building material (ACBM) per each building assessment. This documentation shall be available to all personnel (including contractor personnel) entering the facility at their request. Corrective action was required by 400 Area Integrated Annual Appraisal/Audit for Fiscal Year 1992 (IAA-92-0007) to provide this notification documentation. No formal method had been developed to communicate the location and nature of ACBM to maintenance personnel in the Fast Flux Test Facility (FFTF) 400 Area. The scope of this Data Package Document is to locate and evaluate any ACBM found at FFTF which constitutes a baseline. This includes all buildings within the protected area. These findings are compiled from earlier reports, numerous work packages and engineering evaluations of employee findings.
Date: April 13, 1999
Creator: REYNOLDS, J.A.
System: The UNT Digital Library
Terrorism and Drug Trafficking: Testing Status and Views on Operational Viability of Pulsed Fast Neutron Analysis Technology (open access)

Terrorism and Drug Trafficking: Testing Status and Views on Operational Viability of Pulsed Fast Neutron Analysis Technology

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the operational viability of pulsed fast neutron analysis technology (PFNA), which is designed to directly and automatically detect and measure the presence of specific materials by exposing their constituent chemical elements to short bursts of subatomic particles called neutrons, focusing on: (1) the status of plans for field testing a PFNA inspection system for counterterrorism and counterdrug purposes; and (2) federal agency and vendor views on the operational viability of such a system."
Date: April 13, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Weapons of Mass Destruction: Effort to Reduce Russian Arsenals May Cost More, Achieve Less Than Planned (open access)

Weapons of Mass Destruction: Effort to Reduce Russian Arsenals May Cost More, Achieve Less Than Planned

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the cost and realization of national security objectives at Russia's Mayak nuclear complex and Shchuch'ye chemical weapons storage depot, focusing on whether the: (1) Mayak project will be completed on schedule and within past Department of Defense (DOD) estimates of its total cost to the United States; (2) United States has made progress in ensuring that the completed Mayak facility would achieve U.S. national security objectives by safely and securely storing retired materials taken only from dismantled nuclear weapons; (3) Shchuch'ye project will be completed on schedule and the status of DOD efforts to estimate its total cost to the United States; and (4) completed Shchuch'ye facility will achieve U.S. national security objectives by helping Russia destroy the Shchuch'ye depot's stocks and accelerate elimination of all Russian chemical weapons under the Chemical Weapons Convention."
Date: April 13, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Ashcroft pressure switch - monitor for low SCHe purge pressure (open access)

Ashcroft pressure switch - monitor for low SCHe purge pressure

None
Date: May 13, 1999
Creator: Van Katwijk, Carl
System: The UNT Digital Library
Ashcroft temperature switch and thermowell - tempered water cask inlet high temperature (open access)

Ashcroft temperature switch and thermowell - tempered water cask inlet high temperature

None
Date: May 13, 1999
Creator: Van Katwijk, Carl
System: The UNT Digital Library
Ashcroft temperature switch for bay temperature (open access)

Ashcroft temperature switch for bay temperature

None
Date: May 13, 1999
Creator: Van Katwijk, C.
System: The UNT Digital Library
Baratron MCO absolute pressure transmitter (open access)

Baratron MCO absolute pressure transmitter

None
Date: May 13, 1999
Creator: Van Katwijk, Carl
System: The UNT Digital Library
Characterization engineering status report october 1998 - december 1998 (open access)

Characterization engineering status report october 1998 - december 1998

Characterization Engineering (CE) continues to make progress in support of the project goal of characterizing the Hanford high-level waste tanks. Two core sampling systems were operational during this reporting period-push mode core sampling system No. 1 and rotary mode core sampling system No. 4. The availability average for core sampling systems No. 1 , No. 3 and No. 4, combined, was 45 percent, down from 79percent for the previous quarter and 58 percent for FY 1998. System No. 2 did not have scope during the quarter, and availability was not hacked. System No. 3 was out of service the entire quarter for corrective maintenance. Two tanks were core sampled during the reporting period, and 24 samples were retrieved. Core sample recovery increased slightly during the quarter. System No. 1 average sample recovery increased from 80percent to 81 percent, The rotary mode core sampling average recovery increased to 62 percent from 55 percent for the previous quarter. sampling six tanks, one more than scheduled. Vapor Sampling was utilized in support of the sluicing of tank 241-C-106 and for emissions monitoring of three exhaust stacks. Increased support was provided for Vapor Sampling the Standard Hydrogen Monitoring Systems. The sampling was necessary due …
Date: May 13, 1999
Creator: Boger, R. M.
System: The UNT Digital Library
Combating Terrorism: Issues to Be Resolved to Improve Counterterrorism Operations (open access)

Combating Terrorism: Issues to Be Resolved to Improve Counterterrorism Operations

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on interagency counterterrorist operations, focusing on: (1) how agencies worked together in counterterrorist operations and special events; (2) strengths and weaknesses of international and domestic counterterrorist exercises; and (3) agency and interagency processes to capture and share lessons learned."
Date: May 13, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Endangered Species: Caribou Recovery Program Has Achieved Modest Gains (open access)

Endangered Species: Caribou Recovery Program Has Achieved Modest Gains

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Caribou Recovery Program, focusing on the: (1) amount and source of funds expended on the woodland caribou recovery program; (2) results of the program, including the outcome of efforts to augment the population and the impact of the recovery efforts on land use; and (3) future direction of the recovery program."
Date: May 13, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library
Engineering task plan for the annual revision of the rotary mode core sampling system safety equipment list (open access)

Engineering task plan for the annual revision of the rotary mode core sampling system safety equipment list

This Engineering Task Plan addresses an effort to provide an update to the RMCS Systems 3 and 4 SEL and DCM in order to incorporate the changes to the authorization basis implemented by HNF-SD-WM-BIO-001, Rev. 0 (Draft), Addendum 5 , Safety Analysis for Rotary Mode Core Sampling. Responsibilities, task description, cost estimate, and schedule are presented.
Date: May 13, 1999
Creator: Boger, R. M.
System: The UNT Digital Library
Evaluation of accident frequencies at the canister storage building (open access)

Evaluation of accident frequencies at the canister storage building

By using the fault tree logic, an evaluation of the design basis accident frequencies at the Canister Storage Building has been performed. The evaluation demonstrates that due to low frequency of occurrences, the following design basis accidents are considered not credible (annual frequency of less than 10{sup -6}): Rearrangement of multi-canister overpack (MCO) internals; Gaseous release from the MCO; MCO internal hydrogen explosion; MCO external hydrogen explosion; Thermal runaway reactions inside the MCO; and Violation of design temperature criteria.
Date: May 13, 1999
Creator: LIU, Y.J.
System: The UNT Digital Library
Evaluation of the use of homogenized fuel assemblies in the thermal analysis of spent fuel storage casks (open access)

Evaluation of the use of homogenized fuel assemblies in the thermal analysis of spent fuel storage casks

Thermal analysis of spent fuel storage casks has generally been based on the assumption that heat released by the fuel assemblies is transported to the cask cavity only by conduction through the walls of the basket. This conservative assumption was adopted to compensate for uncertainties in modeling heat transfer in the cavity of a spent fuel cask. During recent years, some applications have submitted safety analysis reports for spent fuel storage casks that challenge this assumption. They offer two methods which include the fuel assemblies, as well as the walls of the basket, as part of the path for heat transfer to the cask cavity. A third method, the consideration of a fuel assembly as a homogeneous log, is explored in a study described in this report.
Date: May 13, 1999
Creator: Carlson, R. W.; Hovingh, J. & Thomas, G. R.
System: The UNT Digital Library
FCI MCO helium inlet element / indicator transmitter (open access)

FCI MCO helium inlet element / indicator transmitter

None
Date: May 13, 1999
Creator: Van Katwijk, Carl
System: The UNT Digital Library
Feasibility of creating a new liquid surface within waste storage tank 241-SY-101 (open access)

Feasibility of creating a new liquid surface within waste storage tank 241-SY-101

The purpose of this study is to determine the feasibility of creating a new liquid surface within Waste Storage Tank 241-SY-101. This study looked at alternatives for this, as well as providing a summary of observations regarding water lancing results relative to this task.
Date: May 13, 1999
Creator: Andres, B. D.
System: The UNT Digital Library
Gender Issues: Perceptions of Readiness of Selected Units (open access)

Gender Issues: Perceptions of Readiness of Selected Units

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on military servicemembers' perceptions regarding the impact women have had on selected combat-oriented units, focusing on: (1) the perceptions of men and women on their personal readiness; (2) the readiness of men and women in their unit; and (3) unit readiness."
Date: May 13, 1999
Creator: United States. General Accounting Office.
System: The UNT Digital Library