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8:1 thermal cavity problem

Description: We present results for the 8:1 thermal cavity problem using FIDAP on 3 meshes--each using 3 elements. A brief summary of related results is also included. This contribution comes via the rather versatile and general commercial finite element code, FIDAP. This code still offers the user a wide selection with respect to element choices, statement of governing equations, (e.g., advective form, divergence form) implicit time integrators (variable-step or fixed step, first-order or second-order), an… more
Date: October 11, 2000
Creator: Gresho, P M & Sutton, S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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81.114- University Reactor Infrastructure and Education Support / Prompt Gamma-ray Activation Analysis of Lithioum Ion Battery Cathodes

Description: This project focuses on the use of the Prompt Gamma-ray Activation Analysis (PGAA) technique available at the Nuclear Engineering Teaching Laboratory of the University of Texas at Austin to precisely determine the hydrogen (proton) contents in layered oxide cathode samples obtained by chemical lithium extraction in order to obtain a better understanding of the factors limiting the practical capacities and overall performance of lithium ion battery cathodes. The project takes careful precautiona… more
Date: November 11, 2006
Creator: Manthiram, Arumugam & Landsberger, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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242-16H 2H EVAPORATOR POT SAMPLING FINAL REPORT

Description: Due to the materials that are processed through 2H Evaporator, scale is constantly being deposited on the surfaces of the evaporator pot. In order to meet the requirements of the Nuclear Criticality Safety Analysis/Evaluation (NCSA/NCSE) for 2H Evaporator, inspections of the pot are performed to determine the extent of scaling. Once the volume of scale reaches a certain threshold, the pot must be chemically cleaned to remove the scale. Prior to cleaning the pot, samples of the scale are obtaine… more
Date: June 11, 2008
Creator: Krementz, D & William Cheng, W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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10th Workshop on Crystalline Silicon Solar Cell Materials and Processes: Extended Abstracts and Papers from the Workshop, Copper Mountain Resort; August 14-16, 2000

Description: The 10th Workshop provided a forum for an informal exchange of technical and scientific information between international researchers in the photovoltaic and non-photovoltaic fields. Discussions included the various aspects of impurities and defects in silicon-their properties, the dynamics during device processing, and their application for developing low-cost processes for manufacturing high-efficiency silicon solar cells. Sessions and panel discussions also reviewed thin-film crystalline-sil… more
Date: August 11, 2000
Creator: Sopori, B. L.; Gee, J.; Kalejs, J.; Saitoh, R.; Stavola, M.; Swanson, D. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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2000 Annual Progress Report for Fuels for Advanced CIDI Engines and Fuel Cells

Description: The Department of Energy's Office of Transportation Technologies Fiscal Year (FY) 2000 Annual Progress Report for the Fuels for Advanced CIDI Engines and Fuel Cells Program highlights progress achieved during FY 2000 and comprises 22 summaries of industry and National Laboratory projects that were conducted. The report provides an overview of the exciting work being conducted to tackle the tough technical challenges associated with developing clean burning fuels that will enable meeting the per… more
Date: December 11, 2000
Creator: Chalk, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2001 DC Lecture Series: The New Biology - Challenges and Opportunities

Description: The Whitehead Institute for Biomedical Research, in collaboration with Center for Strategic and International Studies (CSIS), developed a series of seminars, ''The New Biology: Challenges and Opportunities'', to stimulate dialogue between leaders in science, medicine, law, biotechnology and senior government policymakers on matters that will shape much of the genomic revolution's impact on individuals and institutions in this country.
Date: April 11, 2006
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2006 Multiphoton Processes Gordon Conference - June 11-16

Description: The first Gordon Research Conference on Multiphoton Processes, was held in 1982. The meeting continues to evolve as it embraces both the rapid technological and intellectual growth in the field as well as the multi-disciplinary expertise of the participants. Current areas of interest include: (1) Ionization/Dissociation of Atoms and Molecules in Intense Laser Fields; (2) Frequency Domain Multi-Photon and Multiple-Resonance Spectroscopies of Molecules; (3) Time-Resolved Photoelectron Spectroscop… more
Date: June 11, 2006
Creator: Jones, Robert Rivers
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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2006 U.S. Department of Energy Strategic Plan: Discovering the Solutions to Power and Secure America’s Future

Description: The Department of Energy Organization Act, which created DOE, was enacted in 1977 and DOE officially came into existence in October of that year. That law brought together for the first time, not only most of the government’s energy programs, but also science and technology programs and defense responsibilities that included the design, construction, and testing of nuclear weapons. Over its history, DOE has shifted its emphasis and focus as the energy and security needs of the Nation have chang… more
Date: October 11, 2006
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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2008 Y-12 National Security Complex Annual Illness and Injury Surveillance Report

Description: The U.S. Department of Energy’s (DOE) commitment to assuring the health and safety of its workers includes the conduct of epidemiologic surveillance activities that provide an early warning system for health problems among workers. The Illness and Injury Surveillance Program monitors illnesses and health conditions that result in an absence of workdays, occupational injuries and illnesses, and disabilities and deaths among current workers.
Date: December 11, 2009
Creator: United States. Department of Energy. Office of Illness and Injury Prevention Programs.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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3D Mapping of Polymer Crosslink Density with Magnetic Resonance Imaging

Description: Magnetic Resonance Imaging (MRI) techniques have been used to detect areas of low crosslink density in damaged silicone parts in an effort to develop a QA/QC protocol to be used in the development of new parts. Model materials of varying crosslink density first demonstrated the applicability of the method. Analysis of damaged pads has been shown to be clearly distinguishable by MRI. It is our belief that both the T{sub 2} weighted SPI NMR and the T{sub 2} weighted water/fat suppression MRI expe… more
Date: March 11, 2005
Creator: Herberg, J L; Gjersing, E L; Chinn, S C & Maxwell, R S
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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48Ti(n,xnypz ag) reactions for neutron energies up to 250 MeV

Description: Cross section measurements were made of prompt {gamma}-ray production as a function of incident neutron energy on a {sup 48}Ti sample. Partial {gamma}-ray cross sections for transitions in {sup 45--48}Ti, {sup 44--48}Sc, {sup 42--45}Ca, {sup 41--44}K, and {sup 41--42}Ar have been determined. Energetic neutrons were delivered by the Los Alamos National Laboratory spallation neutron source located at the LANSCE/WNR facility. The prompt-reaction {gamma} rays were detected with the large-scale Comp… more
Date: October 11, 2004
Creator: Dashdorj, D.; Garrett, P. E.; Becker, J. A.; Bernstein, L. A.; Cooper, J. R.; Devlin, M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry

Description: As the US seeks to develop an energy strategy that reduces the reliance on foreign oil, there is a renewed interest in the research and development of the Fischer Tropsch synthesis for converting syngas into long chain hydrocarbon products. This report investigates some of the basic elementary steps for Fischer-Tropsch synthesis over ideal Pt, Ru and carbon-covered Pt and Ru metal surfaces by using ab initio density functional theoretical calculations. We examine in detail the adsorption sites … more
Date: September 11, 2003
Creator: Neurock, Matthew & Chopra, Siddharth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry

Description: One of the greatest societal challenges over the next decade is the production of cheap, renewable energy for the 10 billion people that inhabit the earth. This will require the development of various energy sources which will likely include fuels derived from methane, coal, and biomass and alternatives sources such as solar, wind and nuclear energy. One approach will be to synthesize gasoline and other fuels from simpler hydrocarbons such as CO derived from methane or other U.S. based sources … more
Date: September 11, 2006
Creator: Neurock, Matthew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Ab Initio Approach Towards Engineering Fischer-Tropsch Surface Chemistry

Description: As the US seeks to develop an energy strategy that reduces the reliance on foreign oil, there is a renewed interest in research and development of the Fischer Tropsch synthesis of converting syngas into long chain hydrocarbon products. This report investigates some of the basic elementary steps for Fischer-Tropsch synthesis over ideal Co and Ru metal surfaces by using ab initio density functional theoretical calculations. This includes activation of CO of CO, the hydrogenation of CH{sub x} inte… more
Date: September 11, 2002
Creator: Neurock, Matthew
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ab Initio Large-Basis No-Core Shell Model

Description: We discuss the motivation, theory, and formulation of the ab initio No-Core Shell Model (NCSM). In this method the effective Hamiltonians are derived microscopically from realistic nucleon-nucleon (NN) and theoretical three-nucleon (NNN) potentials, as a function of the finite harmonic-oscillator (HO) basis space. We present converged results for the A = 3 and 4 nucleon systems, which are in agreement with results obtained by other exact methods, followed by results for p-shell nuclei. Binding … more
Date: February 11, 2005
Creator: Barrett, B R; Navratil, P; Nogga, A; Ormand, W E; Stetcu, I; Vary, J P et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ab Initio Simulation of Materials under Extreme Conditions

Description: The study of materials properties under extreme conditions has made considerable progress over the past decade due to both improvements in experimental techniques and advanced modeling methods. The availability of accurate models is crucial in order to analyze experimental results obtained in extreme conditions of pressure and temperature where experimental data can be scarce. Among theoretical models, ab initio simulations are playing an increasingly important role due to their ability to pred… more
Date: August 11, 2005
Creator: Gygi, F. & Galli, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Absorption Spectra of Broadened Sodium Resonance Lines in Presence of Rare Gases

Description: The pressure broadening of alkali-metal lines is a fundamental problem with numerous applications. For example, the sodium resonance lines broadened by xenon are important in the production of broad spectra emitted in the HPS (High-Pressure Sodium) lamp and they potentially can be used for gas condition diagnostics. Broadened absorption lines of alkali-metal atoms are prominent in the optical spectra of brown dwarfs and understanding the broadening mechanism will help elucidate the chemical com… more
Date: September 11, 2002
Creator: Chung, H-K; Shurgalin, M & Babb, J F
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Accelerated Testing of the CSNF Waste Form: Applicability to Yucca Mountain

Description: Spent fuel tests in support of Yucca Mountain have been performed for many years. Most of these tests have been either single-pass flowthrough (SPFT) or unsaturated drip tests that have been used to elucidate waste form degradation rates. In general, the tests have been considered accelerated tests per the definition found in ASTM Standard C1174 in that either the temperature or flow rate has been increased in order to increase the rate of alteration. However, as the design and models for the p… more
Date: January 11, 2005
Creator: Hanson, B.; Buck, E. & Brady, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Accelerator Based Neutron Beams for Neutron Capture Therapy

Description: The DOE-funded accelerator BNCT program at the Massachusetts Institute of Technology has resulted in the only operating accelerator-based epithermal neutron beam facility capable of generating significant dose rates in the world. With five separate beamlines and two different epithermal neutron beam assemblies installed, we are currently capable of treating patients with rheumatoid arthritis in less than 15 minutes (knee joints) or 4 minutes (finger joints) or irradiating patients with shallow … more
Date: April 11, 2003
Creator: Yanch, Jacquelyn C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects

Description: This report summarizes the work done during the second quarter of the project. Effort is directed in two areas: (1) The use of a novel method to achieve a given porosity level with high contiguity and thus conductivity. (2) Relate the measured conductivity to porosity and contiguity. The rationale for these experiments was to develop cathodes with high ionic conductivity, so that the effective polarization resistance will be concomitantly lowered.
Date: October 11, 2003
Creator: Virkar, Anil V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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