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Development of Advanced Wear and Corrosion Resistant Systems Through Laser Surface Alloying and Materials Processing

Description: The stability of tungsten carbide particles in iron-rich and nickel-rich liquid during the laser surface alloying (LSA) process was investigated. Kinetic calculations indicate a rapid dissolution of tungsten carbide particles in iron-rich liquid, as compared with the dissolution rate in nickel-rich liquid. Optical microscopy indicated a heterogeneous microstructure around the tungsten particles that is in agreement with concentration gradients predicted by kinetic calculation. The work demonstr… more
Date: April 1, 2002
Creator: A, Babu S S Martukanitz R P Parks K D David S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Solubility of Crystalline Nonelectrolyte Solutes in Organic Solvents: Mathematical Correlation of Benzil Solubilities with the Abraham General Solvation Model

Description: Article on the solubility of crystalline nonelectrolyte solutes in organic solvents and the mathematical correlation of benzil solubilities with the Abraham general solvation model.
Date: April 1, 2002
Creator: Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Item Type: Refine your search to only Article
Partner: UNT College of Arts and Sciences
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Underground Corrosion of Activated Metals in an Arid Vadose Zone Environment

Description: The subsurface radioactive disposal site located at the Idaho National Engineering and Environmental Laboratory contains neutron-activated metals from nonfuel nuclear-reactor- core components. A long-term corrosion test is being conducted to obtain site-specific corrosion rates to support efforts to more accurately estimate the transfer of activated elements in an arid vadose zone environment. The tests use nonradioactive metal coupons representing the prominent neutron-activated material burie… more
Date: April 1, 2002
Creator: Adler Flitton, Mariana Kay; Mizia, Ronald Eugene & Bishop, Carolyn Wagoner
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

MAGNETO-CHEMICAL CHARACTER STUDIES OF NOVEL Fe CATALYSTS FOR COAL LIQUEFACTION

Description: The objectives of the present study are: (1) To synthesize iron catalysts: Fe/MoO{sub 3}, and Fe/Co/MoO{sub 3} employing two distinct techniques: Pyrolysis with organic precursors and Co-precipitation of metal nitrates; (2) To investigate the magnetic character of the catalysts before and after exposure to CO and CO+H{sub 2} by (a) Mossbauer study of Iron (b) Zerofield Nuclear Magnetic Resonance study of Cobalt, and (c) Magnetic character of the catalyst composite; (3) To study the IR active su… more
Date: April 1, 2002
Creator: Akundi, Murty A.; Zhang, Jian H.; Murty, A.N. & Naidu, S.V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a Probabilistic Technique for On-line Parameter and State Estimation in Non-linear Dynamic Systems

Description: The DSD (Dynamic System Doctor) is a system-independent, interactive software under development for on-line state/parameter estimation in dynamic systems (1), partially supported through a Nuclear Engineering Education (NEER) grant during 1998-2001. This paper summarizes the recent accomplishments in improving the user-friendliness and computational capability of DSD
Date: April 1, 2002
Creator: Aldemir, T.; Miller, D.W.; Hajek, B. k. & Wang, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Snowmass points and slopes : benchmarks for SUSY searches.

Description: The ''Snowmass Points and Slopes'' (SPS) are a set of benchmark points and parameter lines in the MSSM parameter space corresponding to different scenarios in the search for Supersymmetry at present and future experiments. This set of benchmarks was agreed upon at the 2001 ''Snowmass Workshop on the Future of Particle Physics'' as a consensus based on different existing proposals.
Date: April 15, 2002
Creator: Allanach, B. C.; Battaglia, M.; Blair, G. A.; Carena, M.; De Roeck, A. & Wagner, C. E. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Enron: A Select Chronology of Congressional, Corporate, and Government Activities

Description: This report presents basic background information on the collapse of the Enron Corporation, identifying public policy issues in financial market oversight. This report briefly summarizes some federal laws carrying criminal penalties which may be implicated in the events surrounding the collapse of the Enron Corp. This report compares the auditing and accounting reform measures passed by the House (H.R. 3763) and reported by the Senate Committee on Banking, Housing, and Urban Affairs. This repor… more
Date: April 9, 2002
Creator: Anderson, J. Michael
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Proof-of-Concept Units for the Advanced Medium-Sized Mobile Power Sources (AMMPS) Program

Description: The purpose of this report is to document the development of the proof-of-concept units within the Advanced Medium-sized Mobile Power Sources (AMMPS) program. The design used a small, lightweight diesel engine, a permanent magnet alternator, power electronics and digital controls as outlined in the philosophy detailed previously. One small proof-of-concept unit was completed and delivered to the military. The unit functioned well but was not optimized at the time of delivery to the military. A … more
Date: April 3, 2002
Creator: Andriulli, JB
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE (CT)/COMBINED CYCLE (CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)

Description: Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These co… more
Date: April 1, 2002
Creator: Angello, Leonard
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Cybercrime: The Council of Europe Convention

Description: Forty-three countries, including the United States, have signed the Council of Europe’s Convention on Cybercrime of November 2001. The U.S. Senate ratified the Convention on August 3, 2006. The Convention seeks to better combat cybercrime by harmonizing national laws, improving investigative abilities, and boosting international cooperation. Supporters argue that the Convention will enhance deterrence, while critics counter it will have little effect without participation by countries in which … more
Date: April 26, 2002
Creator: Archick, Kristin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrical and optical properties of carbon-doped GaN grown by MBE on MOCVD GaN templates using a CCl4 dopant source

Description: Carbon-doped GaN was grown by plasma-assisted molecular-beam epitaxy using carbon tetrachloride vapor as the dopant source. For moderate doping mainly acceptors were formed, yielding semi-insulating GaN. However at higher concentrations p-type conductivity was not observed, and heavily doped films (>5 x 10{sup 20} cm{sup -3}) were actually n-type rather than semi-insulating. Photoluminescence measurements showed two broad luminescence bands centered at 2.2 and 2.9 eV. The intensity of both b… more
Date: April 15, 2002
Creator: Armitage, Rob; Yang, Qing; Feick, Henning; Park, Yeonjoon & Weber, Eicke R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Nuclear apoJ: A low dose radiation inducible regulator of cell death. Final report for period September 15, 1998 - September 14, 2001

Description: This project was based on preliminary data that was published by Dr. Boothman (Yang et al. 2000) which indicated a strong induction of apoJ gene expression, increased secretion of the protein, and accumulation of an apparently somewhat different form of the apoJ protein in the nucleus of MCF-7 breast carcinoma cells undergoing response to DNA damage. A clone expressing apoJ protein was isolated that was capable of interacting with Ku80, a component of the double strand break repair complex that… more
Date: April 19, 2002
Creator: Aronow, Bruce J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Scaling of Quench Front and Entrainment-Related Phenomena

Description: The scaling of thermal hydraulic systems is of great importance in the development of experiments in laboratory-scale test facilities that are used to replicate the response of full-size prototypical designs. One particular phenomenon that is of interest in experimental modeling is the quench front that develops during the reflood phase in a PWR (Pressurized Water Reactor) following a large-break LOCA (Loss of Coolant Accident). The purpose of this study is to develop a scaling methodology such… more
Date: April 2002
Creator: Aumiller, D. L.; Hourser, R. J.; Holowach, M. J.; Hochreiter, L. E. & Cheung, F-B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Scalable Systems Approach for Critical Infrastructure Security

Description: Critical infrastructures underpin the domestic security, health, safety and economic well being of the United States. They are large, widely dispersed, mostly privately owned systems operated under a mixture of federal, state and local government departments, laws and regulations. While there currently are enormous pressures to secure all aspects of all critical infrastructures immediately, budget realities limit available options. The purpose of this study is to provide a clear framework for s… more
Date: April 1, 2002
Creator: BAKER, ARNOLD B.; HUTCHINSON, ROBERT L.; EAGAN, ROBERT J.; MOONKA, AJOY K.; FALCONE, PATRICIA K.; SWINSON, MARK L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microbiological Production of Surfactant from Agricultural Residuals for IOR Application

Description: Utilization of surfactants for improved oil recovery (IOR) is an accepted technique with high potential. However, technology application is frequently limited by cost. Biosurfactants (surface-active molecules produced by microorganisms) are not widely utilized in the petroleum industry due to high production costs associated with use of expensive substrates and inefficient product recovery methods. The economics of biosurfactant production could be significantly impacted through use of media op… more
Date: April 1, 2002
Creator: Bala, Greg Alan; Bruhn, Debby Fox; Fox, Sandra Lynn; Noah, Karl Scott & Thompson, David Neal
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Damage Mechanisms of Filled Siloxanes for Predictive Multiscale Modeling of Aging Behavior

Description: Predictions of component performance versus lifetime are often risky for complex materials in which there may be many underlying aging or degradation mechanisms. In order to develop more accurate predictive models for silica-filled siloxane components, we are studying damage mechanisms over a broad range of size domains, linked together through several modeling efforts. Atomistic and molecular dynamic modeling has elucidated the chemistry of the silica filler to polymer interaction, as this int… more
Date: April 2, 2002
Creator: Balazs, B; Maxwell, R; de Teresa, S; Dinh, L & Gee, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Testing of a Continuous Sampling Mercury CEM at the EPA-Rotary Kiln Incinerator Simulator Facility

Description: This report has been prepared to document the performance of the continuous sampling mercury monitoring system developed by Ames Laboratory for use as a continuous emission monitor (CEM). This work was funded by the U.S. Department of Energy, Office of Environmental Management, Office of Science and Technology, through the Mixed Waste Focus Area. The purpose of the project is to develop instrumentation and methods for spectroscopic field-monitoring applications. During FY01 this included contin… more
Date: April 12, 2002
Creator: Baldwin, D. P.; Bajic, S. J.; Eckels, D. E. & Zamzow, D. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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