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2-D Finite Element Cable and Box IEMP Analysis

Description: A 2-D finite element code has been developed for the solution of arbitrary geometry cable SGEMP and box IEMP problems. The quasi- static electric field equations with radiation- induced charge deposition and radiation-induced conductivity y are numerically solved on a triangular mesh. Multiple regions of different dielectric materials and multiple conductors are permitted.
Date: December 17, 1998
Creator: Scivner, G.J. & Turner, C.D.
Item Type: Refine your search to only Article
open access

60 kilograms high explosive containment with multi-diagnostic capability

Description: In anticipation of increasingly stringent environmental regulations, Lawrence Livermore National Laboratory (LLNL) proposes to construct a 60 kilogram (kg) firing chamber to provide blast-effects containment for most of its open-air, high explosives, firing operations. Even though these operations are within current environmental limits, containment of the blast effects and hazardous debris will further drastically reduce emissions to the environment and minimize the generated hazardous waste.
Date: September 17, 1998
Creator: Simmons, L. F.
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open access

303-K Storage Facility report on FY98 closure activities

Description: This report summarizes and evaluates the decontamination activities, sampling activities, and sample analysis performed in support of the closure of the 303-K Storage Facility. The evaluation is based on the validated data included in the data validation package (98-EAP-346) for the 303-K Storage Facility. The results of this evaluation will be used for assessing contamination for the purpose of closing the 303-K Storage Facility as described in the 303-K Storage Facility Closure Plan, DOE/RL-9… more
Date: July 17, 1998
Creator: Adler, J. G.
Item Type: Refine your search to only Report
open access

233U Assay A Neutron NDA System

Description: The assay of highly enriched {sup 233}U material presents some unique challenges. Techniques which apply to the assay of materials of Pu or enriched {sup 235}U do not convert easily over to the assay of {sup 233}U. A specialized neutron assay device is being fabricated to exploit the singles neutron signal, the weak correlated neutron signal, and an active correlated signal. These pieces of information when combined with {gamma} ray isotopics information should give a good overall determination… more
Date: November 17, 1998
Creator: Hensley, D.C.; Lucero, A.J. & Pierce, L.
Item Type: Refine your search to only Article
open access

Adult Education and Literacy: Current Programs and Legislative Proposals in the 105th Congress

Description: This report summarizes current programs for adult education and literacy, provides a funding history, and analyzes major provisions of the legislative proposals being considered by the 105th Congress for amending adult education and literacy programs. Specifically, the report examines the provisions of H.R. 1385, the Employment, Training, and Literacy Enhancement Act of 1997, as passed by the House, and H.R. 1385, the Workforce Investment Partnership Act of 1998, as amended by the Senate (origi… more
Date: June 17, 1998
Creator: Irwin, Paul M.
Item Type: Refine your search to only Report
open access

Adult Education and Literacy: Current Programs and Legislative Proposals in the 105th Congress

Description: This report summarizes current programs for adult education and literacy, provides a funding history, and analyzes major provisions of the legislative proposals being considered by the 105th Congress for amending adult education and literacy programs. Specifically, the report examines the provisions of H.R. 1385, the Employment, Training, and Literacy Enhancement Act of 1997, as passed by the House, and H.R. 1385, the Workforce Investment Partnership Act of 1998, as amended by the Senate (origi… more
Date: June 17, 1998
Creator: Irwin, Paul M.
Item Type: Refine your search to only Report
open access

Analysis of market penetration scenarios of clean coal technologies in China using the LLNL China Energy Model

Description: This paper presents the results of an analysis of the market penetration of Clean Coal Technologies in the electric utility market in China. The analysis is based on a model of the Chinese energy system developed at Lawrence Livermore National Laboratory. Under this model, the market penetration of a technology depends on the relative prices of all technologies in a market. The model assumes that for each technology there is a distribution of effective prices to the consumers in the market plac… more
Date: August 17, 1998
Creator: Lamont, A
Item Type: Refine your search to only Report
open access

Annual Hanford Site environmental permitting status report

Description: The information contained and/or referenced in this Annual Hanford Site Environmental Permitting Status Report (Status Report) addresses the State Environmental Policy Act (SEPA) of 1971 and Condition II.W. of the Resource Conservation and Recovery Act (RCRA) of 1976 Permit, Dangerous Waste Portion (DW Portion). Condition II.W. of the RCRA Permit specifies the Permittees are responsible for all other applicable federal, state, and local permits for the development and operation of the Hanford F… more
Date: September 17, 1998
Creator: Sonnichsen, J. C.
Item Type: Refine your search to only Report
open access

Application of adaptive optics for controlling the NIF laser performance and spot size

Description: The National Ignition Facility (NIF) laser will use a 192-beam multi-pass architecture capable of delivering several MJ of UV energy in temporal pulse formats varying from sub-ns square to 20 ns precisely-defined high-contrast shapes. Each beam wavefront will be subjected to effects of optics inhomogeneities, figuring errors, mounting distortions, prompt and slow thermal effects from flashlamps, driven and passive air-path turbulence, and gravity-driven deformations. A 39-actuator intra-cavity … more
Date: August 17, 1998
Creator: Auerbach, J.; Bliss, E.; Henesian, M.; Lawson, J.; Manes, K.; Renard, P. et al.
Item Type: Refine your search to only Article
open access

Application of Damage Detection Techniques Using Wind Turbine Modal Data

Description: As any structure ages, its structural characteristics will also change. The goal of this work was to determine if modal response data fkom a wind turbine could be used in the detection of damage. The input stimuli to the wind turbine were from traditional modal hammer input and natural wind excitation. The structural response data was acquired using accelerometers mounted on the rotor of a parked and undamaged horizontal-axis wind turbine. The bolts at the root of one of the three blades were t… more
Date: December 17, 1998
Creator: Gross, E.; Rumsey, M.; Simmermacher, T. & Zadoks, R.I.
Item Type: Refine your search to only Article
open access

Atomic scale modeling of boron transient diffusion in silicon

Description: We presents results from a predictive atomic level simulation of Boron diffusion in Silicon under a wide variety of implant and annealing conditions. The parameters for this simulation have been extracted from first principle approximation models and molecular dynamics simulations. The results are compared with experiments showing good agreement in all cases. The parameters and reactions used have been implemented into a continuum-level model simulator.
Date: June 17, 1998
Creator: Caturla, M. J.; Diaz de la Rubia, T.; Foad, M.; Giles, M.; Johnson, M. D.; Law, M. et al.
Item Type: Refine your search to only Article
open access

Attrition Resistant Iron-Based Fischer-Tropsch Catalysts

Description: The Fischer-Tropsch (F-T) reaction provides a way of converting coal-derived synthesis gas (CO+H{sub 2}) to liquid fuels. Since the reaction is highly exothermic, one of the major problems in control of the reaction is heat removal. Recent work has shown that the use of slurry bubble column reactors (SBCRs) can largely solve this problem. Iron-based (Fe) catalysts are preferred catalysts for F-T when using low CO/H{sub 2} ratio synthesis gases derived from modern coal gasifiers. This is because… more
Date: September 17, 1998
Creator: Goodwin, James G., Jr.; Spivey, James J.; Jothimurugesan, K. & Gangwal, Santosh K.
Item Type: Refine your search to only Report
open access

Bioremediation of Uranium Contaminated Soils and Wastes.

Description: Contamination of soils, water, and sediments by radionuclides and toxic metals from uranium mill tailings, nuclear fuel manufacturing and nuclear weapons production is a major concern. Studies of the mechanisms of biotransformation of uranium and toxic metals under various microbial process conditions has resulted in the development of two treatment processes: (i) stabilization of uranium and toxic metals with reduction in waste volume and (ii) removal and recovery of uranium and toxic metals f… more
Date: September 17, 1998
Creator: Francis, A. J.
Item Type: Refine your search to only Article
open access

Burn Depth Estimation Using Thermal Excitation and Imaging

Description: Accurate estimation of the depth of partial-thickness burns and the early prediction of a need for surgical intervention are difficult. A non-invasive technique utilizing the difference in thermal relaxation time between burned and normal skin may be useful in this regard. In practice, a thermal camera would record the skin's response to heating or cooling by a small amount-roughly 5{degrees} Celsius for a short duration. The thermal stimulus would be provided by a heat lamp, hot or cold air, o… more
Date: December 17, 1998
Creator: Dickey, F.M.; Holswade, S.C. & Yee, M.L.
Item Type: Refine your search to only Article
open access

Busted Butte Test Facility Ground Support Confirmation Analysis

Description: The main purpose and objective of this analysis is to confirm the validity of the ground support design for Busted Butte Test Facility (BBTF). The highwall stability and adequacy of highwall and tunnel ground support is addressed in this analysis. The design of the BBTF including the ground support system was performed in a separate document (Reference 5.3). Both in situ and seismic loads are considered in the evaluation of the highwall and the tunnel ground support system. In this analysis onl… more
Date: June 17, 1998
Creator: Bonabian, Saeed
Item Type: Refine your search to only Report
open access

Characterization of Low-Energy (6-30 keV) Response of Polish TLDs (MTS-N, MCP-N) with Synchrotron Radiation and Determination of Some Fundamental TLD Quantities

Description: Relative to <sup>137</sup>Cs gamma rays, the response of MTS-N (<sup>Nat</sup>LiF:Mg,Ti-0.04 cm thick) increased from 0.4 to 1.4 between x-ray energies of 6 and 30 keV and that of MCP-N (<sup>Nat</sup>Lif:Mg, Cu, P-0.04 cm thick) increased from 0.02 to 1.2 between 6 and 26 keV. A mathematical model for TLD response was used with measured responses to determine overall TLD efficiency C(k) and efficiency relative to <sup>137</sup>Cs. The effective energy attenuation coefficient {mu}(k) and light … more
Date: November 17, 1998
Creator: Ipe, Nisy E.
Item Type: Refine your search to only Report
open access

Characterization of Reillex{trademark} HPQ Polymer

Description: This work examined the thermal stability of Reillex(tm) HPQ resin as part of a comprehensive plan to qualify that material for use in HB-line. No low temperature exothermic reactions or volatile organic compounds occurred in various lots of as-received, chloride form Reillex(tm) HPQ polymer or the nitrate form polymer. The studies do not suggest any restrictions on purchase criteria for the resin nor any changes in planned use. Previously observed low temperature exotherms resulted from reactio… more
Date: December 17, 1998
Creator: Walker, D. D.
Item Type: Refine your search to only Report
open access

Characterization of surface and sub-surface defects in optical materials using the near field evanescent wave

Description: In this paper, we characterize surface and sub-surface defects in fused silica and optical coatings using the surface evanescent wave measured by NSOM implemented on a large-stage AFM. A laser irradiates the sample surface in a total internal reflection configuration. The evanescent wave from the surface is collected by an apertured fiber probe of the NSOM. The amplitude of the surface evanescent wave is proportional to the laser intensity at the surface and therefore sensitive to surface as we… more
Date: September 17, 1998
Creator: Kozlowski, M.; Oberhelman, S.; Siekhaus, W.; Wang, L. & Yan, M.
Item Type: Refine your search to only Article
open access

CHI: A General Agent Communication Framework

Description: We have completed and exercised a communication framework called CHI (CLOS to HTML Interface) by which agents can communicate with humans. CHI follows HTTP (HyperText Transfer Protocol) and produces HTML (HyperText Markup Language) for use by WWW (World-Wide Web) browsers. CHI enables the rapid and dynamic construction of interface mechanisms. The essence of CHI is automatic registration of dynamically generated interface elements to named objects in the agent's internal environment. The agent … more
Date: December 17, 1998
Creator: Goldsmith, S.Y.; Phillips, L.R. & Spires, S.V.
Item Type: Refine your search to only Article
open access

Collaborative virtual reality environments for computational science and design.

Description: The authors are developing a networked, multi-user, virtual-reality-based collaborative environment coupled to one or more petaFLOPs computers, enabling the interactive simulation of 10{sup 9} atom systems. The purpose of this work is to explore the requirements for this coupling. Through the design, development, and testing of such systems, they hope to gain knowledge that allows computational scientists to discover and analyze their results more quickly and in a more intuitive manner.
Date: February 17, 1998
Creator: Papka, M. E.
Item Type: Refine your search to only Article
open access

Cooperative Research and Development Agreements

Description: A Cooperative Research and Development Agreement (CRADA) is a mechanism established by P.L. 99-602, the Federal Technology Transfer Act, to allow the transfer of technology, knowledge, and expertise from government laboratories to the private sector for further development and commercialization. The government provides support in the way of overhead for research and development performed in the federal laboratory and is prohibited from providing funding directly to the partner in the collaborat… more
Date: November 17, 1998
Creator: Schacht, Wendy H.
Item Type: Refine your search to only Report
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