Office of Scientific & Technical Information Technical Reports - 626 Matching Results

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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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512-S Facility, Actinide Removal Process Radiological Design Summary Report

Description: This report contains top-level requirements for the various areas of radiological protection for workers. Detailed quotations of the requirements for applicable regulatory documents can be found in the Radiological Design Summary Report Implementation Guide. For the purposes of demonstrating compliance with these requirements, per Engineering Standard 01064, ''shall consider / shall evaluate'' indicates that the designer must examine the requirement for the design and either incorporate or prov… more
Date: April 21, 2004
Creator: Nathan, S.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2002-2003 Engineering Accomplishments: Unconventional Nuclear Weapons Detection

Description: The Defense Threat Reduction Agency, DTRA, is a federal agency charged with safeguarding the nation from weapons of mass destruction, in particular nuclear weapons such as crude devices, and radiological dispersal devices (RDD), also known as dirty bombs. Both of which could be delivered using unconventional means such as by transporting them by a car or boat. Two years ago DTRA partnered with NNSA to evaluate commercially available technologies that could be deployed quickly to defend against … more
Date: April 9, 2004
Creator: Hernandez, Jose E. & Valentine, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2003 Chemical Engineering Division annual technical report.

Description: The Chemical Engineering Division is one of six divisions within the Engineering Research Directorate at Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, to promote national security, and to develop bette… more
Date: April 26, 2004
Creator: Lewis, D.; Graziano, D.; Miller, J. F. & Vandegrift, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

2004 DOE Hydrogen, Fuel Cells & Infrastructure Technologies Program Review Presentation COST AND PERFORMANCE ENHANCEMENTS FOR A PEM FUEL CELL TURBOCOMPRESSOR

Description: The objective is to assist the Department of Energy in the development of a low cost, reliable and high performance air compressor/expander. Technical Objective 1: Perform a turbocompressor systems PEM fuel cell trade study to determine the enhanced turbocompressor approach. Technical Objective 2: Using the results from technical objective 1, an enhanced turbocompressor will be fabricated. The design may be modified to match the flow requirements of a selected fuel cell system developer. Techni… more
Date: April 1, 2004
Creator: Gee, Mark K.
Item Type: Refine your search to only Presentation
Partner: UNT Libraries Government Documents Department
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2004 Initial Assessments of Closure for the S-SX Tank Farm: Numerical Simulations

Description: In support of CH2M HILL Hanford Group, Inc.'s (CHG) preparation of a Field Investigative Report (FIR) for the closure of the Hanford Site Single-Shell Tank (SST) Waste Management Area (WMA) tank farms, a set of numerical simulations of flow and solute transport was executed to investigate different potential contaminant source scenarios that may pose long-term risks to groundwater from the closure of the S-SX Tank Farm. This report documents the simulation of 7 cases (plus two verification) inv… more
Date: April 1, 2004
Creator: Zhang, Z. F.; Freedman, Vicky L.; Waichler, Scott R. & White, Mark D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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3D Computations and Experiments

Description: This project consists of two activities. Task A, Simulations and Measurements, combines all the material model development and associated numerical work with the materials-oriented experimental activities. The goal of this effort is to provide an improved understanding of dynamic material properties and to provide accurate numerical representations of those properties for use in analysis codes. Task B, ALE3D Development, involves general development activities in the ALE3D code with the focus o… more
Date: April 5, 2004
Creator: Couch, R; Faux, D; Goto, D & Nikkel, D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A 3D Frictional Segment-to-Segment Contact Method for Large Deformations and Quadratic Elements

Description: Node-on-segment contact is the most common form of contact used today but has many deficiencies ranging from potential locking to non-smooth behavior with large sliding. Furthermore, node-on-segment approaches are not at all applicable to higher order discretizations (e.g. quadratic elements). In a previous work, [3, 4] we developed a segment-to-segment contact approach for eight node hexahedral elements based on the mortar method that was applicable to large deformation mechanics. The approach… more
Date: April 1, 2004
Creator: Puso, M; Laursen, T & Solberg, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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70193-Influence of Clastic Dikes on Vertical Migration of Contaminants in the Vadose Zonde at Hanford

Description: The purpose of this study was to examine the hypothesis that clastic dikes could form a preferential flow path through the vadose zone to the water table at the Hanford Site. Clastic dikes are subvertical structures that form within sedimentary sequences after deposition and cut across the original sedimentary layers. They are common throughout the Hanford Site, often occurring in organized polygonal networks. In the initial phase of the project, we analyzed the large-scale geometry of the clas… more
Date: April 7, 2004
Creator: Murray, Christopher J; Ward, Anderson L. & Wilson, John L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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AB INITIO AND CALPHAD THERMODYNAMICS OF MATERIALS

Description: Ab initio electronic structure methods can supplement CALPHAD in two major ways for subsequent applications to stability in complex alloys. The first one is rather immediate and concerns the direct input of ab initio energetics in CALPHAD databases. The other way, more involved, is the assessment of ab initio thermodynamics {acute a} la CALPHAD. It will be shown how these results can be used within CALPHAD to predict the equilibrium properties of multi-component alloys.
Date: April 14, 2004
Creator: Turchi, P A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ab initio study of Al(III) adsorption on stepped {100} surfaces of KDP crystals

Description: Crystals of potassium dihydrogen phosphate (KH{sub 2}PO{sub 4}, KDP) are grown in large scale for use as nonlinear material in laser components. Traces of trivalent metal impurities are often added to the supernatant to achieve habit control during crystal growth, selectively inhibiting the growth of the {l_brace}100{r_brace} face. Model systems representing AlPO{sub 4}-doped KDP {l_brace}100{r_brace} stepped surfaces are prepared and studied using ab initio quantum methods. Results of Hartree-… more
Date: April 1, 2004
Creator: Salter, E A; Wierzbicki, A & Land, T A
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ab initio study of low-energy electron collisions withtertafluoroethene, C2F4

Description: We report the results of variational calculations of elastic electron scattering by tetrafluoroethene, C{sub 2}F{sub 4}, with incident electron energies ranging from 0.5 to 20 eV, using the complex Kohn method and effective core potentials. These are the first fully calculations to reproduce experimental angular differential cross sections at energies below 10 eV. Low-energy electron scattering by C{sub 2}F{sub 4} is sensitive to the inclusion of electronic correlation and target-distortion eff… more
Date: April 26, 2004
Creator: Trevisan, C. S.; Orel, A. E. & Rescigno, Thomas N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Accessing High Pressure States Relevant to Core Conditions in the Giant Planets

Description: We have designed an experimental technique to use on the National Ignition Facility (NIF) laser to achieve very high pressure (P{sub max} > 10 Mbar = 1000 GPa), dense states of matter at moderate temperatures (kT < 0.5 eV = 6000 K), relevant to the core conditions of the giant planets. A discussion of the conditions in the interiors of the giant planets is given, and an experimental design that can approach those conditions is described.
Date: April 15, 2004
Creator: Remington, B. A.; Cavallo, R. M.; Edwards, M. J.; Ho, D. D.; Lorenz, K. T.; Lorenzana, H. E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments: Final Technical Report

Description: The research during this project has concentrated on developing a correlation between rock deformation mechanisms and their acoustic velocity signature. This has included investigating: (1) the acoustic signature of drained and undrained unconsolidated sands, (2) the acoustic emission signature of deforming high porosity rocks (in comparison to their low porosity high strength counterparts), (3) the effects of deformation on anisotropic elastic and poroelastic moduli, and (4) the acoustic tomog… more
Date: April 1, 2004
Creator: Scott, Thurman E., Jr. & Abousleiman, Younane
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Adaptive Algebraic Multigrid Methods

Description: Our ability to simulate physical processes numerically is constrained by our ability to solve the resulting linear systems, prompting substantial research into the development of multiscale iterative methods capable of solving these linear systems with an optimal amount of effort. Overcoming the limitations of geometric multigrid methods to simple geometries and differential equations, algebraic multigrid methods construct the multigrid hierarchy based only on the given matrix. While this allow… more
Date: April 9, 2004
Creator: Brezina, M; Falgout, R; MacLachlan, S; Manteuffel, T; McCormick, S & Ruge, J
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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ADAPTIVE FULL-SPECTRUM SOLOR ENERGY SYSTEMS

Description: This RD&D project is a three year team effort to develop a hybrid solar lighting (HSL) system that transports solar light from a paraboloidal dish concentrator to a luminaire via a large core polymer fiber optic. The luminaire can be a device to distribute sunlight into a space for the production of algae or it can be a device that is a combination of solar lighting and electric lighting. A benchmark prototype system has been developed to evaluate the HSL system. Sunlight is collected using… more
Date: April 1, 2004
Creator: Wood, Byard D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ADVANCED ABRASION RESISTANT MATERIALS FOR MINING

Description: The high-density infrared (HDI) transient-liquid coating (TLC) process was successfully developed and demonstrated excellent, enhanced (5 times higher than the current material and process) wear performance for the selected functionally graded material (FGM) coatings under laboratory simulated, in-service conditions. The mating steel component exhibited a wear rate improvement of approximately one and a half (1.5) times. After 8000 cycles of wear testing, the full-scale component testing demons… more
Date: April 8, 2004
Creator: Ludtka, G. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Advanced Chemistry Basins Project: Final Report

Description: In the next decades, oil exploration by majors and independents will increasingly be in remote, inaccessible areas, or in areas where there has been extensive shallow exploration but deeper exploration potential may remain; areas where the collection of data is expensive, difficult, or even impossible, and where the most efficient use of existing data can drive the economics of the target. The ability to read hydrocarbon chemistry in terms of subsurface migration processes by relating it to the… more
Date: April 5, 2004
Creator: Goddard, William; Meulbroek, Peter; Tang, Yongchun & Cathles, Lawrence, III
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced Compressor Engine Controls to Enhance Operation, Reliability and Integrity

Description: This document provides a mid-term update for the ''Advanced Compressor Engine Controls to Enhance Operation, Reliability, and Integrity'' project. SwRI is conducting this project for DOE in conjunction with Cooper Energy Services, under DOE contract number DE-FC26-03NT41859. The objective of this one-year project is to develop, evaluate, and demonstrate advanced engine control technologies and hardware, specifically, closed-loop NO{sub x} emissions control on a two-stroke integral reciprocating… more
Date: April 1, 2004
Creator: Bourn, Gary D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report: January - March 2004

Description: Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the origina… more
Date: April 29, 2004
Creator: Horner, Steve
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced Gas Turbine Systems Research Program Quarterly Report

Description: The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading. more
Date: April 1, 2004
Creator: Golan, Lawrence P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ADVANCED HOT SECTION MATERIALS AND COATINGS TEST RIG

Description: The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principal activity during this reporting period were the evaluation of syngas combustor concepts, the evaluation of test section concepts and the selection of the preferred rig configuration.
Date: April 30, 2004
Creator: Reome, Scott & Davies, Dan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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