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Mist lift analysis summary report

Description: The mist flow open-cycle OTEC concept proposed by S.L. Ridgway has much promise, but the fluid mechanics of the mist flow are not well understood. The creation of the mist and the possibility of droplet growth leading to rainout (when the vapor can no longer support the mist) are particularly troublesome. This report summarizes preliminary results of a numerical analysis initiated at SERI in FY79 to study the mist-lift process. The analysis emphasizes the mass transfer and fluid mechanics of th… more
Date: September 1, 1980
Creator: Davenport, R.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of plating thickness standards for the physical vapor deposition of aluminum on Kapton

Description: Reference and working standards for determining nondestructively the thickness of aluminum-on-Kapton plating, unobtainable either commercially or from the National Bureau of Standards, were developed at Bendix Kansas City. The results from the calibration data of the reference standards indicate that thickness values are within +-152.4 nm (+-6 microinches). 10 figures, 8 tables.
Date: September 1, 1977
Creator: Russell, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Assessment of the 1988 Saguenay earthquake: Implications on attenuation functions for seismic hazard analysis

Description: This study investigates the earthquake records from the 1988 Saguenay earthquake and examines the implications of these records with respect to ground-motion models used in seismic-hazard studies in eastern North America (ENA), specifically, to what extent the ground motions from this earthquake support or reject the various attenuation functions used in the EPRI and LLNL seismic-hazard calculations. Section 2 provides a brief description of the EPRI and LLNL attenuation functions for peak acce… more
Date: September 1, 1991
Creator: Toro, G .R. & McGuire, R. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Greater confinement disposal program at the Savannah River Plant

Description: A demonstration Greater Confinement Disposal facility, consisting of twenty GCD boreholes, began accepting solid low-level radioactive waste at the Savannah River Plant in 1984. Three of the boreholes have been filled with the higher activity fraction of SRP solid waste. They have been stabilized with grout to prevent subsidence and reduce water infiltration. Closure will take place when all twenty boreholes have been filled. A Greater Confinement Disposal trench project is underway, with const… more
Date: September 1, 1985
Creator: Towler, O. A. & Cook, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Applications of holographic interferometry to cryogenic ICF target characterization

Description: Uniformity of condensed layers of DT fuel in cryogenic ICF targets is a crucial parameter in their design. Measurements by classical interferometry lacks resolution to determine DT layer uniformity for targets with thick glass shells and/or thick ablative polymer coatings. We have developed holographic interferometry as an alternative tool for layer uniformity determination. This method is sensitive only to the fuel layer itself. We describe the technique and interference pattern analysis, and … more
Date: September 23, 1981
Creator: Bernat, T. P.; Darling, D. H. & Sanchez, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A Cell-Centered Adaptive Projection Method for the IncompressibleNavier-Stokes Equations in Three Dimensions

Description: We present a method for computing incompressible viscousflows in three dimensions using block-structured local refinement in bothspace and time. This method uses a projection formulation based on acell-centered approximate projection, combined with the systematic use ofmultilevel elliptic solvers to compute increments in the solutiongenerated at boundaries between refinement levels due to refinement intime. We use an L_0-stable second-order semi-implicit scheme to evaluatethe viscous terms. Res… more
Date: September 25, 2007
Creator: Martin, D.F.; Colella, P. & Graves, D.T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Plastic Straining of Iridium Alloy DOP-26 During Cup Sizing Operations

Description: DOP-26 iridium alloy cups are used for fuel cladding for radioisotope power systems. The cups are deep drawn and recrystallized prior to final fabrication operations. This study characterizes the plastic deformation of cups during a sizing operation following the recrystallization heat treatment. The purpose of the sizing operation is to achieve the specified roundness, diameter, and radius dimensions of the cup. The operation introduces various levels of plastic strain in the cup. Plastic stra… more
Date: September 1, 2007
Creator: Ohriner, Evan Keith; Ulrich, George B & Sabau, Adrian S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Manifest Ultraviolet Behavior in the Three-Loop Four-Point Amplitude of N=8 Supergravity

Description: Using the method of maximal cuts, we obtain a form of the three-loop four-point scattering amplitude of N = 8 supergravity in which all ultraviolet cancellations are made manifest. The Feynman loop integrals that appear have a graphical representation with only cubic vertices, and numerator factors that are quadratic in the loop momenta, rather than quartic as in the previous form. This quadratic behavior reflects cancellations beyond those required for finiteness, and matches the quadratic beh… more
Date: September 3, 2008
Creator: Bern, Z.; Carrasco, J. J. M.; Dixon, L. J.; Johansson, H. & Roiban, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BENCHMARKING ORTEC ISOTOPIC MEASUREMENTS AND CALCULATIONS

Description: This report represents a description of compiled benchmark tests conducted to probe and to demonstrate the extensive utility of the Ortec ISOTOPIC {gamma}-ray analysis computer program. The ISOTOPIC program performs analyses of {gamma}-ray spectra applied to specific acquisition configurations in order to apply finite-geometry correction factors and sample-matrix-container photon absorption correction factors. The analysis program provides an extensive set of preset acquisition configurations t… more
Date: September 29, 2008
Creator: Dewberry, R; Raymond Sigg, R; Vito Casella, V & Nitin Bhatt, N
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Steel Processing Properties and Their Effect on Impact Deformation of Lightweight Structures

Description: The objective of the research was to perform a comprehensive computational analysis of the effects of material and process modeling approaches on performance of UltraLight Steel Auto Body (ULSAB) vehicle models. The research addressed numerous material related effects, impact conditions as well as analyzed the performance of the ULSAB vehicles in crashes against designs representing the current US vehicle fleet. This report is organized into three main sections. The first section describes the … more
Date: September 23, 2003
Creator: Simunovic, S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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New Dimensions for Randall-Sundrum Phenomenology

Description: We consider a 6D extension of the Randall-Sundrum (RS) model, RS6, where the Standard Model (SM) gauge fields are allowed to propagate in an additional dimension, compactified on S{sup 1} or S{sup 1}/Z{sub 2}. In a minimal scenario, fermions propagate in the 5D RS subspace and their localization provides a model of flavor. New Kaluza-Klein (KK) states, corresponding to excitations of the gauge fields along the 6th dimension, appear near the TeV scale. The new gauge KK modes behave differently f… more
Date: September 30, 2008
Creator: Davoudiasl, Hooman & Rizzo, Thomas G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced Simulation and Computing FY08-09 Implementation Plan, Volume 2, Revision 0.5

Description: The Stockpile Stewardship Program (SSP) is a single, highly integrated technical program for maintaining the surety and reliability of the U.S. nuclear stockpile. The SSP uses past nuclear test data along with current and future non-nuclear test data, computational modeling and simulation, and experimental facilities to advance understanding of nuclear weapons. It includes stockpile surveillance, experimental research, development and engineering programs, and an appropriately scaled production… more
Date: September 13, 2007
Creator: Kusnezov, D; Bickel, T; McCoy, M & Hopson, J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plasma ion sources and ion beam technology inmicrofabrications

Description: For over decades, focused ion beam (FIB) has been playing a very important role in microscale technology and research, among which, semiconductor microfabrication is one of its biggest application area. As the dimensions of IC devices are scaled down, it has shown the need for new ion beam tools and new approaches to the fabrication of small-scale devices. In the meanwhile, nanotechnology has also deeply involved in material science research and bioresearch in recent years. The conventional FIB… more
Date: September 1, 2007
Creator: Ji, Lili
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Strain mapping on gold thin film buckling and siliconblistering

Description: Stress/Strain fields associated with thin film buckling induced by compressive stresses or blistering due to the presence of gas bubbles underneath single crystal surfaces are difficult to measure owing to the microscale dimensions of these structures. In this work, we show that micro Scanning X-ray diffraction is a well suited technique for mapping the strain/stress tensor of these damaged structures.
Date: September 1, 2005
Creator: Goudeau, P.; Tamura, N.; Parry, G.; Colin, J.; Coupeau, C.; Cleymand, F. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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LDRD final report for improving human effectiveness for extreme-scale problem solving : assessing the effectiveness of electronic brainstorming in an industrial setting.

Description: An experiment was conducted comparing the effectiveness of individual versus group electronic brainstorming in order to address difficult, real world challenges. While industrial reliance on electronic communications has become ubiquitous, empirical and theoretical understanding of the bounds of its effectiveness have been limited. Previous research using short-term, laboratory experiments have engaged small groups of students in answering questions irrelevant to an industrial setting. The pres… more
Date: September 1, 2008
Creator: Dornburg, Courtney C.; Stevens, Susan Marie; Davidson, George S. & Hendrickson, Stacey M. Langfitt
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fluctuations and Gibbs-Thomson Law - the Simple Physics.

Description: Crystals of slightly soluble materials should be subject of relatively weak attachment/detachment fluctuations on their faces so that steps on that faces have low kink density. These steps are parallel to the most close packed lattice rows and form polygons on a crystal surface. The process responsible for implementation of the classical Gibbs-Thomson law (GTL) for the polygonal step (in two dimensions, 2D) is kink exchange between the step corners. For the 3D crystallites, this mechanism inclu… more
Date: September 15, 2006
Creator: Chernov, A. A.; De Yoreo, J. J. & Rashkovich, L. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Technical Safety Requirements for the Waste Storage Facilities

Description: This document contains Technical Safety Requirements (TSR) for the Radioactive and Hazardous Waste Management (RHWM) WASTE STORAGE FACILITIES, which include Area 612 (A612) and the Decontamination and Waste Treatment Facility (DWTF) Storage Area at Lawrence Livermore National Laboratory (LLNL). The TSRs constitute requirements regarding the safe operation of the WASTE STORAGE FACILITIES. These TSRs are derived from the Documented Safety Analysis for the Waste Storage Facilities (DSA) (LLNL 2006… more
Date: September 7, 2007
Creator: Larson, H L
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis and Visualization of Multi-Scale Astrophysical Simulations using Python and NumPy

Description: The study the origins of cosmic structure requires large-scale computer simulations beginning with well-constrained, observationally-determined, initial conditions. We use Adaptive Mesh Refinement to conduct multi-resolution simulations spanning twelve orders of magnitude in spatial dimensions and over twenty orders of magnitude in density. These simulations must be analyzed and visualized in a manner that is fast, accurate, and reproducible. I present 'yt,' a cross-platform analysis toolkit wr… more
Date: September 30, 2008
Creator: Turk, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Supersymmetry without the Desert

Description: Naturalness of electroweak symmetry breaking in weak scale supersymmetric theories may suggest the absence of the conventional supersymmetric desert. We present a simple, realistic framework for supersymmetry in which (most of) the virtues of the supersymmetric desert are naturally reproduced without having a large energy interval above the weak scale. The successful supersymmetric prediction for the low-energy gauge couplings is reproduced due to a gauged R symmetry present in the effective th… more
Date: September 26, 2006
Creator: Nomura, Yasunori & Poland, David
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Characteristics of fuel crud and its impact on storage, handling, and shipment of spent fuel. [Fuel crud]

Description: Corrosion products, called ''crud,'' form on out-of-reactor surfaces of nuclear reactor systems and are transported by reactor coolant to the core, where they deposit on external fuel-rod cladding surfaces and are activated by nuclear reactions. After discharge of spent fuel from a reactor, spallation of radioactive crud from the fuel rods could impact wet or dry storage operations, handling (including rod consolidation), and shipping. It is the purpose of this report to review earlier (1970s) … more
Date: September 1, 1987
Creator: Hazelton, R.F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Specific gamma-ray dose constants for nuclides important to dosimetry and radiological assessment

Description: Tables of specific gamma-ray dose constants (the unshielded gamma-ray dose equivalent rate at 1 m from a point source) have been computed for approximately 500 nuclides important to dosimetry and radiological assessment. The half life, the mean attenuation coefficient, and thickness for a lead shield providing 95% dose equivalent attenuation are also listed.
Date: September 1, 1981
Creator: Unger, L.M. & Trubey, D.K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of mirror specifications

Description: The work performed by PNL for Sandia Laboratories under a contract titled Survey and Analysis of Mirror Silvering Technology and Heliostat Glass Evaluation is described. The primary purpose for the work was to develop specifications that will enhance the durability and lifetime of heliostat mirrors. The contract was initiated with a technical survey of the present commercial silvered glass mirror industry and an analytical investigation of the degradation phenomena experienced by the heliostat … more
Date: September 1, 1979
Creator: Lind, M.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Synthesis, evaluation, and defect compensation of tetrahedral glasses as possible solar cell materials. Quarterly technical progress report No. 2, May 1-July 31, 1979

Description: Work performed on the project to synthesize A/sup II/B/sup IV/C/sub 2//sup V/ glasses and evaluate their potential use as solar cell materials is described. The major effort was directed towards preparation of these films by thermal evaporation of compounds synthesized during the first quarter. Films were produced from CdAs/sub 2/, CdSnAs/sub 2/, CdSiAs/sub 2/, ZnSiAs/sub 2/ and ZnAs/sub 2/. Only films from the last compound had a stoichiometry comparable to the starting material. The ternary f… more
Date: September 1, 1979
Creator: Rauh, R D
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Plasma processed coating of laser fusion targets

Description: Coatings for laser fusion targets have been deposited in an inductively coupled discharge device by plasma polymerization. Two feed gases were used: perfluoro-2-butene, which produced a fluorocarbon coating (CF/sub 1/ /sub 3/) with a density of 1.8 g/cc, and trans-2-butene which produced a hydrocarbon coating (CH/sub 1/ /sub 3/) with a density of 1.0 g/cc. Uniform pin-hole free films have been deposited to a thickness of up to 30 ..mu..m of fluorocarbon and up to 110 ..mu..m of hydrocarbon. The… more
Date: September 19, 1979
Creator: Johnson, W. L.; Letts, S. A.; Myers, D. W.; Crane, J. K.; Illige, J. D. & Hatcher, C. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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