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A 1-Joule laser for a 16-fiber injection system

Description: A 1-J laser was designed to launch light down 16, multi-mode fibers (400-{micro}m-core dia.). A diffractive-optic splitter was designed in collaboration with Digital Optics Corporation (DOC), and was delivered by DOC. Using this splitter, the energy injected into each fiber varied <1%. The spatial profile out of each fiber was such that there were no ''hot spots,'' a flyer could successfully be launched and a PETN pellet could be initiated. Preliminary designs of the system were driven by sy… more
Date: April 6, 2004
Creator: Honig, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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3-D Thermal Evaluations for a Fueled Experiment in the Advanced Test Reactor

Description: The DOE Advanced Fuel Cycle Initiative and Generation IV reactor programs are developing new fuel types for use in the current Light Water Reactors and future advanced reactor concepts. The Advanced Gas Reactor program is planning to test fuel to be used in the Next Generation Nuclear Plant (NGNP) nuclear reactor. Preliminary information for assessing performance of the fuel will be obtained from irradiations performed in the Advanced Test Reactor large ''B'' experimental facility. A test confi… more
Date: October 6, 2004
Creator: Ambrosek, Richard G.; Chang, Gray S. & Utterbeck, Debby J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Advanced High-Temperature Reactor (AHTR) for Producing Hydrogen to Manufacture Liquid Fuels

Description: Conventional world oil production is expected to peak within a decade. Shortfalls in production of liquid fuels (gasoline, diesel, and jet fuel) from conventional oil sources are expected to be offset by increased production of fuels from heavy oils and tar sands that are primarily located in the Western Hemisphere (Canada, Venezuela, the United States, and Mexico). Simultaneously, there is a renewed interest in liquid fuels from biomass, such as alcohol; but, biomass production requires fertil… more
Date: October 6, 2004
Creator: Forsberg, C. W.; Peterson, P. F. & Ott, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analyses in Support of Z-IFE: LLNL Progress Report for FY-04

Description: During the last quarter of FY2004, Lawrence Livermore National Laboratory (LLNL) conducted a brief study of power plant options for a z-pinch-based inertial fusion energy (Z-IFE) power plant. Areas that were covered include chamber design, thick-liquid response, neutronics and activation, and systems studies. This report summarizes the progress made in each of these areas, provides recommendations for improvements to the basic design concept, and identifies future work that is needed. As a star… more
Date: October 6, 2004
Creator: Meier, W; Abbott, R; Latkowski, J; Moir, R; Reyes, S & Schmitt, R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Applications of the 3-D Deterministic Transport Attila{reg_sign} for Core Safety Analysis

Description: An LDRD (Laboratory Directed Research and Development) project is ongoing at the Idaho National Engineering and Environmental Laboratory (INEEL) for applying the three-dimensional multi-group deterministic neutron transport code (Attila{reg_sign}) to criticality, flux and depletion calculations of the Advanced Test Reactor (ATR). This paper discusses the model development, capabilities of Attila, generation of the cross-section libraries, and comparisons to an ATR MCNP model and future.
Date: October 6, 2004
Creator: Lucas, D.S.; Gougar, D.; Roth, P.A.; Wareing, T.; Failla, G.; McGhee, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Azimuthally sensitive hanbury brown-twiss interferometry in Au + Au collisions sqrt S sub NN = 200 GeV

Description: We present the results of a systematic study of the shape of the pion distribution in coordinate space at freeze-out in Au+Au collisions at RHIC using two-pion Hanbury Brown-Twiss (HBT) interferometry. Oscillations of the extracted HBT radii vs. emission angle indicate sources elongated perpendicular to the reaction plane. The results indicate that the pressure and expansion time of the collision system are not sufficient to completely quench its initial shape.
Date: June 6, 2004
Creator: Argonne National Laboratory
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Bilirubin UDP-Glucuronosyltransferase 1A1 (UGT1A1) Gene Promoter Polymorphisms and HPRT, Glycophorin A, and Micronuclei Mutant Frequencies in Human Blood

Description: A dinucleotide repeat polymorphism (5-, 6-, 7-, or 8-TA units) has been identified within the promoter region of UDP-glucuronosyltransferase 1A1 gene (UGT1A1). The 7-TA repeat allele has been associated with elevated serum bilirubin levels that cause a mild hyperbilirubinemia (Gilbert's syndrome). Studies suggest that promoter transcriptional activity of UGT1A1 is inversely related to the number of TA repeats and that unconjugated bilirubin concentration increases directly with the number of TA… more
Date: October 6, 2004
Creator: Grant, D.; Hall, I. J.; Eastmond, D.; Jones, I. M. & Bell, D. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Carbon Nanotube-Based Permeable Membranes

Description: A membrane of multiwalled carbon nanotubes embedded in a silicon nitride matrix was fabricated for use in studying fluid mechanics on the nanometer scale. Characterization by fluorescent tracer diffusion and scanning electron microscopy suggests that the membrane is void-free near the silicon substrate on which it rests, implying that the hollow core of the nanotube is the only conduction path for molecular transport. Assuming Knudsen diffusion through this nanotube membrane, a maximum helium t… more
Date: April 6, 2004
Creator: Holt, J K; Park, H G; Bakajin, O; Noy, A; Huser, T & Eaglesham, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The CDF Silicon Vertex Detector for Run II

Description: The 8 layer, 720k channel CDF Run II silicon detector is an essential part of the heavy flavor tagging and forward tracking capabilities of the CDF experiment. A summary of the experience in commissioning and operating this double-sided detector during the first 2 years of Run II is presented. The performances of the silicon in term of resolution, efficiency are also described. The results of the studies of radiation damage and the expected operational limits are discussed. A short description … more
Date: January 6, 2004
Creator: Rossin, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The CDF Time of Flight Detector

Description: A new Time of Flight (TOF) detector based on scintillator bars with fine-mesh photomultipliers at both ends has been in operation since 2001 in the CDF experiment. With a design resolution of 100 ps, the TOF can provide separation between K{sup +-} and {pi}{sup +-} in p{bar p} collisions at the 2{omega} level for low momentum, which enhances b flavor tagging capabilities. Because of its very fast response, the TOF is an excellent triggering device, and it is used to trigger on highly ionizing p… more
Date: January 6, 2004
Creator: al., S. Cabrera et
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Partner: UNT Libraries Government Documents Department
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CO2 splitting by H2O to CO and O2 under UV light in TiMCM-41silicate sieve

Description: The 266 nm light-induced reaction of CO{sub 2} and H{sub 2}O gas mixtures (including isotopic modifications {sup 13}CO{sub 2}, C{sup 18}O{sub 2}, and D{sub 2}O) in framework TiMCM-41 silicate sieve was monitored by in-situ FT-IR spectroscopy at room temperature. Carbon monoxide gas was observed as the sole product by infrared, and the growth was found to depend linearly on the photolysis laser power. H{sub 2}O was confirmed as stoichiometric electron donor. The work establishes CO as the single… more
Date: April 6, 2004
Creator: Lin, Wenyong; Han, Hongxian & Frei, Heinz
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Coated Metal Articles and Method of Making

Description: The method of protectively coating metallic uranium which comprises dipping the metallic uranium in a molten alloy comprising about 20-75% of copper and about 80-25% of tin, dipping the coated uranium promptly into molten tin, withdrawing it from the molten tin and removing excess molten metal, thereupon dipping it into a molten metal bath comprising aluminum until it is coated with this metal, then promptly withdrawing it from the bath.
Date: July 6, 2004
Creator: Boller, Ernest R. & Eubank, Lowell D.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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Cogeneration of Electricity and Potable Water Using The International Reactor Innovative And Secure (IRIS) Design

Description: The worldwide demand for potable water has been steadily growing and is projected to accelerate, driven by a continued population growth and industrialization of emerging countries. This growth is reflected in a recent market survey by the World Resources Institute, which shows a doubling in the installed capacity of seawater desalination plants every ten years. The production of desalinated water is energy intensive, requiring approximately 3-6 kWh/m3 of produced desalted water. At current U.S… more
Date: October 6, 2004
Creator: Ingersoll, D. T.; Binder, J. L.; Kostin, V. I.; Panov, Y. K.; Polunichev, V.; Ricotti, M. E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Collective Modes and Colored Noise as Beam-Halo Amplifiers

Description: As illustrated herein, collective modes and colored noise conspire to produce beam halo with much larger amplitude than could be generated by either phenomenon separately. Collective modes are inherent to nonequilibrium beams with space charge. Colored noise arises from unavoidable machine transitions and/or errors that influence the internal space-charge force. Lowest-order radial eigenmodes calculated self-consistently for a direct-current, cylindrically symmetric, warm-fluid Kapchinskij-Vlad… more
Date: August 6, 2004
Creator: Bohn, Courtlandt L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Comparison of Blade-Strike Modeling Results with Empirical Data

Description: This study is the initial stage of further investigation into the dynamics of injury to fish during passage through a turbine runner. As part of the study, Pacific Northwest National Laboratory (PNNL) estimated the probability of blade strike, and associated injury, as a function of fish length and turbine operating geometry at two adjacent turbines in Powerhouse 1 of Bonneville Dam. Units 5 and 6 had identical intakes, stay vanes, wicket gates, and draft tubes, but Unit 6 had a new runner and … more
Date: May 6, 2004
Creator: Carlson, Thomas J. & Ploskey, Gene R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computational identification of developmental enhancers:conservation and function of transcription factor binding-site clustersin drosophila melanogaster and drosophila psedoobscura

Description: The identification of sequences that control transcription in metazoans is a major goal of genome analysis. In a previous study, we demonstrated that searching for clusters of predicted transcription factor binding sites could discover active regulatory sequences, and identified 37 regions of the Drosophila melanogaster genome with high densities of predicted binding sites for five transcription factors involved in anterior-posterior embryonic patterning. Nine of these clusters overlapped known… more
Date: August 6, 2004
Creator: Berman, Benjamin P.; Pfeiffer, Barret D.; Laverty, Todd R.; Salzberg, Steven L.; Rubin, Gerald M.; Eisen, Michael B. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Conceptual Design for a Fuel Assembly of a New Research Reactor

Description: A new Research Reactor (ARR) has been under design by KAERI since 2002. In this work, as a first step for the design of the fuel assembly of the ARR, the conceptual design has been carried out. The vibration characteristics of the tubular fuel model and the locking performance of the preliminary designed locking devices were investigated. In order to investigate the effects of the stiffener on the vibration characteristics of the tubular fuel, a modal analysis was performed for the finite eleme… more
Date: October 6, 2004
Creator: Ryu, J-S.; Cho, Y-G.; Yoon, D-B.; Dan, H-J.; Chae, H-T. & Park, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Construction of Industrial Electron Beam Plant for Wastewater Treatment

Description: A pilot plant for treating 1,000 m3/day of dyeing wastewater with e-beam has been constructed and operated since 1998 in Daegu, Korea together with the biological treatment facility. The wastewater from various stages of the existing purification process has been treated with electron beam in this plant, and it gave rise to elaborate the optimal technology of the electron beam treatment of wastewater with increased reliability at instant changes in the composition of wastewater. Installation of… more
Date: October 6, 2004
Creator: Han, B.; Kim, J.; Kim, Y.; Kim, S.; Lee, M.; Choi, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Contamination Vulnerability Assessment for the Santa Clara and San Mateo County Groundwater Basins

Description: In response to concerns expressed by the California Legislature and the citizenry of the State of California, the State Water Resources Control Board (SWRCB), implemented a program to assess groundwater quality, and provide a predictive capability for identifying areas that are vulnerable to contamination. The program was initiated in response to concern over public supply well closures due to contamination by chemicals such as MtBE from gasoline, and solvents from industrial operations. As a r… more
Date: January 6, 2004
Creator: Moran, J. E.; Hudson, G. B.; Eaton, G. F. & Leif, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coral Radiocarbon Records of Indian Ocean Water Mass Mixing and Wind-Induced Upwelling Along the Coast of Sumatra, Indonesia

Description: Radiocarbon ({sup 14}C) in the skeletal aragonite of annually banded corals track radiocarbon concentrations in dissolved inorganic carbon (DIC) in surface seawater. As a result of nuclear weapons testing in the 1950s, oceanic uptake of excess {sup 14}C in the atmosphere has increased the contrast between surface and deep ocean {sup 14}C concentrations. We present accelerator mass spectrometric (AMS) measurements of radiocarbon isotope ({Delta}{sup 14}C) in Porites corals from the Mentawai Isla… more
Date: February 6, 2004
Creator: Guilderson, T. P.; Grumet, N. S.; Abram, N. J.; Beck, J. W.; Dunbar, R. B.; Gagan, M. K. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrective Action Investigation Plan for Corrective Action Unit 552: Area 12 Muckpile and Ponds, Nevada Test Site, Nevada: Revision 0

Description: This Corrective Action Investigation Plan contains the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office's approach for collecting the data necessary to evaluate corrective action alternatives appropriate for the closure of Corrective Action Unit (CAU) 552: Area 12 Muckpile and Ponds, Nevada Test Site (NTS), Nevada, under the Federal Facility Agreement and Consent Order. Located in Area 12 on the NTS, CAU 552 consists of two Corrective Action Sites (CASs): 1… more
Date: April 6, 2004
Creator: U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion Behavior of Nickel Alloys in Wet Hydrofluoric Acid

Description: Hydrofluoric acid is a water solution of hydrogen fluoride (HF). Hydrofluoric acid is used widely in diverse types of industrial applications; traditionally, it is used in pickling solutions in the metal industry, in the fabrication of chlorofluorocarbon compounds, as an alkylation agent for gasoline and as an etching agent in the industry of glass. In recent years, hydrofluoric acid has extensively been used in the manufacture of semiconductors and microelectronics during the wet chemical clea… more
Date: February 6, 2004
Creator: Rebak, R. B.
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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Creation of an antiferromagnetic exchange spring

Description: We present evidence for the creation of an exchange spring in an antiferromagnet due to exchange coupling to a ferromagnet. X-ray magnetic linear dichroism spectroscopy on single crystal Co/NiO(001) shows that a partial domain wall is wound up at the surface of the antiferromagnet when the adjacent ferromagnet is rotated by a magnetic field. We determine the interface exchange stiffness and the antiferromagnetic domain wall energy from the field dependence of the direction of the antiferromagne… more
Date: April 6, 2004
Creator: Scholl, A.; Liberati, M.; Arenholz, E.; Ohldag, H. & Stohr, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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