Office of Scientific & Technical Information Technical Reports - 623 Matching Results

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3-D Combinatorial Geometry in the MERCURY Monte Carlo Particle Transport Code

Description: Lawrence Livermore National Laboratory is in the process of developing a new Monte Carlo Particle Transport code named MERCURY. This new code features a 3-D Combinatorial Geometry tracking algorithm. This paper details some of the characteristics of this Monte Carlo tracker
Date: September 27, 2004
Creator: Greenman, G
Partner: UNT Libraries Government Documents Department
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A 10 Hz Grazing Incidence pumped Ni-like Mo laser at 18.9 nm with 150 mJ pump energy

Description: The first demonstration of the grazing incidence pumping (GRIP) scheme for laser-driven x-ray lasers (XRLs) is described utilizing 2-pulse pumping. A long pulse is incident normal to the target to produce a plasma with a particular density profile. Then a short pulse is incident at a grazing angle, chosen to optimally couple the short pulse laser energy into the specific density region where the inversion process will occur. The short pulse is simultaneously absorbed and refracted at a maximum … more
Date: September 30, 2004
Creator: Keenan, R.; Dunn, J.; Patel, P. K.; Price, D. F.; Smith, R. F. & Shlyaptsev, V. N.
Partner: UNT Libraries Government Documents Department
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2003 Archaea: Ecology, Metabolism and Molecular Biology

Description: The Gordon Research Conference (GRC) on 2003 Archaea: Ecology, Metabolism and Molecular Biology was held at Proctor Academy, Andover, NH from August 3-8, 2003. The Conference was well-attended with 150 participants (attendees list attached). The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both U.S. and foreign scientists, senior researchers, young investigators, and students. In designing the formal speakers program, … more
Date: September 21, 2004
Creator: Shand, Richard F.
Partner: UNT Libraries Government Documents Department
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2003 Electronic Spectroscopy and Dynamics - July 6-11, 2003

Description: The Gordon Research Conference (GRC) on 2003 Electronic Spectroscopy and Dynamics - July 6-11, 2003 was held at Bates College, Lewiston, Maine, July 6-11, 2003. The Conference was well-attended with 103 participants (attendees list attached). The attendees represented the spectrum of endeavor in this field coming from academia, industry, and government laboratories, both U.S. and foreign scientists, senior researchers, young investigators, and students. In designing the formal speakers program,… more
Date: September 10, 2004
Creator: Bernstein, Elliot
Partner: UNT Libraries Government Documents Department
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2003 Laser Diagnostic in Combustion Conference

Description: The GRC Laser Diagnostics in Combustion aims at bringing together scientists and engineers working in the front edge of research and development to discuss and find new ways to solve problems connected to combustion diagnostics. Laser-based techniques have proven to be very efficient tools for studying combustion processes thanks to features as non-intrusiveness in combination with high spatial and temporal resolution. Major tasks for the community are to develop and apply techniques for quanti… more
Date: September 10, 2004
Creator: Allen, Mark G.
Partner: UNT Libraries Government Documents Department
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2003 Plant Cell Walls Gordon Conference

Description: This conference will address recent progress in many aspects of cell wall biology. Molecular, genetic, and genomic approaches are yielding major advances in our understanding of the composition, synthesis, and architecture of plant cell walls and their dynamics during growth, and are identifying the genes that encode the machinery needed to make their biogenesis possible. This meeting will bring together international scientists from academia, industry and government labs to share the latest br… more
Date: September 21, 2004
Creator: Cosgrove, Daniel J.
Partner: UNT Libraries Government Documents Department
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2004 Initial Assessments for the T and TX TY Tank Farm Field Investigation Report (FIR): Numerical Simulations

Description: In support of CH2M HILL Hanford Group, Inc.’s (CHG) preparation of a Field Investigative Report (FIR) for the Hanford Site Single-Shell Tank Waste Management Area (WMA) T and TX-TY, a suite of numerical simulations of flow and solute transport was executed using the STOMP code to predict the performance of surface barriers for reducing long-term risks from potential groundwater contamination at the T and TX-TY WMA. The scope and parametric data for these simulations were defined by a modeling d… more
Date: September 24, 2004
Creator: Zhang, Z. F.; Freedman, Vicky L. & Waichler, Scott R.
Partner: UNT Libraries Government Documents Department
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9W-12W, 8H and 10H Cell, Rack Pan, and Air Tunnel Inspections for the Safe Deactivation NCSE

Description: The cell, rack pan, Warm Canyon Air Tunnel (WCAT) and Hot Canyon Air Tunnel (HCAT) inspections did not reveal significant deposits or accumulation of fissile material. Nor were there any depressions, except the sumps, that exceeded the limits of 2 inch x 6 inch in 9W-12W or 20 inch x 35 inch in 8H or 10H. After filling the sumps and isolating the liquid sources, the cells, rack pans, and air tunnels meet the requirements for criticality safety as described in the NCSE.
Date: September 1, 2004
Creator: EUBANKS, RONNYEA.
Partner: UNT Libraries Government Documents Department
open access

Ab Initio Studies of Coke Formation on Ni Catalysts During Methane Reforming

Description: The atomic-scale processes that control the formation of carbon deposits on Ni catalysts in reforming applications are poorly understood. Ab initio Density Functional Theory calculations have been used to examine several key elementary steps in the complex network of chemical reactions that precedes carbon formation on practical catalysts. Attention has been focused on the disproportionation of CO. A comparative study of this reaction on flat and stepped crystal planes of Ni has provided the fi… more
Date: September 25, 2004
Creator: Sholl, David S.
Partner: UNT Libraries Government Documents Department
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Abstracts for the Workshop on Computational Biology: Focus on Hydrogen, Biomass, and Nanoscience

Description: Computational science stands at the forefront of biological modeling and simulation. The challenges in this field are two-fold. First, biological computational science is obliged to use high-performance computers and advanced visualization to explore ever increasingly complex systems and datasets. Second, validation of theory with experiment is exceptionally critical in this new field. The Computational Sciences Center (CSC) is supporting the NREL Computational Sciences Workshop (NCS 2004) on C… more
Date: September 1, 2004
Creator: Kim, K.; Jones, W.; Himmel, M. & King, P.
Partner: UNT Libraries Government Documents Department
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Accurate Position Sensing of Defocused Beams Using Simulated Beam Templates

Description: In position detection using matched filtering one is faced with the challenge of determining the best position in the presence of distortions such as defocus and diffraction noise. This work evaluates the performance of simulated defocused images as the template against the real defocused beam. It was found that an amplitude modulated phase-only filter is better equipped to deal with real defocused images that suffer from diffraction noise effects resulting in a textured spot intensity pattern.… more
Date: September 29, 2004
Creator: Awwal, A.; Candy, J.; Haynam, C.; Widmayer, C.; Bliss, E. & Burkhart, S.
Partner: UNT Libraries Government Documents Department
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Accurate wavelength measurements and modeling of FeXV to FeXIX spectra recorded in high density plasmas between 13.5 to 17 A.

Description: Iron spectra have been recorded from plasmas created at three different laser plasma facilities, the Tor Vergata University laser in Rome (Italy), the Hercules laser at ENEA in Frascati (Italy), and the Compact Multipulse Terawatt (COMET) laser at LLNL in California (USA). The measurements provide a means of identifying dielectronic satellite lines from FeXVI and FeXV in the vicinity of the strong 2p {yields} 3d transitions of FeXVII. About 80 {Delta}n {ge} 1 lines of FeXV (Mg-like) to FeXIX (O… more
Date: September 28, 2004
Creator: May, M.; Beiersdorfer, P.; Dunn, J.; Jordan, N.; Osterheld, A.; Faenov, A. et al.
Partner: UNT Libraries Government Documents Department
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Actinide Cross Section Evaluations

Description: The Livermore Computational Nuclear Physics group is charged with producing updated neutron incident cross section evaluations for all the actinides in the coming year, concentrating on neutron induced fission, neutron capture and (n,2n) cross sections. We attack this daunting task either by adopting other recent evaluations or by performing our own. Owing to the large number of nuclei involved, we seek to automate this process as much as possible. For this purpose, we have developed a series o… more
Date: September 20, 2004
Creator: Brown, D. A.; Loyola, B. & McNabb, D.
Partner: UNT Libraries Government Documents Department
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Activities of the US-Japan Safety Monitor Joint Working Group

Description: This paper documents the activities of the US-Japan exchange in the area of personnel safety at magnetic and laser fusion experiments. A near-miss event with a visiting scientist to the US in 1992 was the impetus for forming the Joint Working Group on Fusion Safety. This exchnge has been under way for over ten years and has provided many safety insights for both US and Japanese facility personnel at national institutes and at universities. The background and activities of the Joint Working Grou… more
Date: September 1, 2004
Creator: Savercool, Richard L. & Cadwallader, Lee C.
Partner: UNT Libraries Government Documents Department
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The Adaptive Response in p53 Cancer Prone Mice: Loss of heterozygosity and Genomic Instability.

Description: The Trp53 gene is clearly associated with increased cancer risk. This, coupled with the broad understanding of its mode of action at the molecular level, makes this gene a good candidate for investigating the relationship between genetic risk factors and spontaneous cancer occurring in a mouse model exposed to low dose radiation. We have shown that adaptive response to chronic low dose radiation could increase cancer latency, as well as overall lifespan. To better understand the molecular proce… more
Date: September 28, 2004
Creator: Lavoie, Josée; Dolling, Jo-Anna; Mitchel, Ron E. J. & Boreham, Douglas R.
Partner: UNT Libraries Government Documents Department
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Advanced Biocatalytic Processing of Heterogeneous Lignocellulosic Feedstocks to a Platform Chemical Intermediate (Lactic acid Ester)

Description: The development of commercial boi-based processes and products derived from agricultural waste biomass has the potential for significant impact on the economy and security of our nation. Adding value, rather than disposing of the waste of agriculture, can solve an environmental problem and reduce our dependence on foreign sources of fossil fuel for production of chemicals, materials and fuels.
Date: September 3, 2004
Creator: Shoemaker, Dr. Sharon
Partner: UNT Libraries Government Documents Department
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Advanced Cuttings Transport Study: Final Technical Report

Description: The Advanced Cuttings Transport Study (ACTS) was a 5-year JIP project undertaken at the University of Tulsa (TU). The project was sponsored by the U.S. Department of Energy (DOE) and JIP member companies. The objectives of the project were: (1) to develop and construct a new research facility that would allow three-phase (gas, liquid and cuttings) flow experiments under ambient and EPET (elevated pressure and temperature) conditions, and at different angle of inclinations and drill pipe rotatio… more
Date: September 30, 2004
Creator: Miska, Stefan; Reed, Troy & Kuru, Ergun
Partner: UNT Libraries Government Documents Department
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Advanced Geothermal Optical Transducer (AGOT)

Description: Today's geothermal pressure-temperature measuring tools are short endurance, high value instruments, used sparingly because their loss is a major expense. In this project LEL offered to build and test a rugged, affordable, downhole sensor capable ofretuming an uninterrupted data stream at pressures and of 10,000 psi and temperatures up to 250 C, thus permitting continuous deep-well logging. It was proposed to meet the need by specializing LEL's patented 'Twin Column Transducer' technology to sa… more
Date: September 1, 2004
Partner: UNT Libraries Government Documents Department
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Advanced Membrane Filtration Technology for Cost Effective Recovery of Fresh Water from Oil & Gas Produced Brine

Description: Produced water is a major waste generated at the oil and natural gas wells in the state of Texas. This water could be a possible source of new fresh water to meet the growing demands of the state after treatment and purification. Treatment of brine generated in oil fields or produced water with an ultrafiltration membranes were the subject of this thesis. The characterization of ultrafiltration membranes for oil and suspended solids removal of produced water, coupled with the reverse osmosis (R… more
Date: September 29, 2004
Creator: Burnett, David B.
Partner: UNT Libraries Government Documents Department
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Advanced Monitoring systems initiative

Description: The Advanced Monitoring Systems Initiative (AMSI) actively searches for promising technologies and aggressively moves them from the research bench into DOE/NNSA end-user applications. There is a large unfulfilled need for an active element that reaches out to identify and recruit emerging sensor technologies into the test and evaluation function. Sensor research is ubiquitous, with the seeds of many novel concepts originating in the university systems, but at present these novel concepts do not… more
Date: September 30, 2004
Creator: Venedam, R. J.; Hohman, E. O.; Lohrstorfer, C. F.; Weeks, S. J.; Jones, J. B. & Haas, W. J.
Partner: UNT Libraries Government Documents Department
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