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Mode methods for strain-hardening structures

Description: An approximation method is being developed to predict the dynamic plastic response of rigid, strain-hardening structures. This method is analogous to the instantaneous mode techniques used to treat rigid, perfectly plastic structures in that a deflection shape involving a number of arbitrary functions of time is selected, based on static deformation profiles. Two stress fields are associated with the deflection shape: One satisfies the equations of motion with appropriate boundary and continuit… more
Date: April 1, 1992
Creator: Youngdahl, C.K.
Partner: UNT Libraries Government Documents Department
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US Department of Energy Solar Thermal Energy Systems Program. An overview presentation, August 1979

Description: Intended as both a position paper and a progress report to industry, this document provides a comprehensive overview of the US Department of Energy's Solar Thermal Program. Cost goals, systems design parameters, applications considerations, and the potential for industry involvement in solar thermal development and commercialization are described in detail. Decentralized management of R and D functions is linked to priorities and strategies of the evolving program.
Date: June 1, 1980
Creator: Braun, G W
Partner: UNT Libraries Government Documents Department
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Considerations for imaging system implementation in a networked environment

Description: Information storage and retrieval systems that utilize raster images are increasing in popularity on a wide variety of platforms. Image systems typically involve the transmission of data files in the 100 KiloByte to 1 MegaByte range to users on specialized workstations who expect retrieval in a matter of seconds. The results of the pilot study outlines the potential for the sharing of image information among various platforms and systems, and sets expectations regarding the level of integration. more
Date: January 1, 1991
Creator: Hudson, B.J.
Partner: UNT Libraries Government Documents Department
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Operational, control and protective system transient analyses of the closed-cycle GT-HTGR power plant

Description: This paper presents a description of the analyses of the control/protective system preliminary designs for the gas turbine high-temperature gas-cooled reactor (GT-HTGR) power plant. The control system is designed to regulate reactor power, control electric load and turbine speed, control the temperature of the helium delivered to the turbines, and control thermal transients experienced by the system components. In addition, it provides the required control programming for startup, shutdown, loa… more
Date: July 1, 1980
Creator: Openshaw, F.L. & Chan, T.W.
Partner: UNT Libraries Government Documents Department
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Recent advances in high-temperature superconductor wire fabrication and applications development

Description: In this paper, recent advances in fabrication of HTS wires are summarized, and detailed discussion is provided for developments in near- and intermediate-term applications. Near-term applications, using presently obtainable current densities, include: liquid-nitrogen depth sensors, cryostat current leads, and magnetic bearings. Intermediate-term applications, using current densities expected to be available in the near future include fault-current limiters and short transmission lines. 25 refs.
Date: January 1, 1992
Creator: Hull, J.R. & Uherka, K.L.
Partner: UNT Libraries Government Documents Department
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Chemiluminescence from the reaction of Ba /sup 3/D with nitric oxide

Description: The reaction of laser excited Ba*(/sup 3/D) states with nitric oxide is presented. BaO product is not detected, although the channel is thermodynamically open, and instead chemiluminescence is observed. Experiments which suggest that radiative recombination, Ba + NO ..-->.. BaNO* ..-->.. BaNO, is the observed reaction channel will also be presented.
Date: January 5, 1977
Creator: Johnson, S. A.; Solarz, R. W.; Dubrin, J. W. & Brotzmann, R.
Partner: UNT Libraries Government Documents Department
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The Scalable Coherent Interface and related standards projects

Description: The Scalable Coherent Interface (SCI) project (IEEE P1596) found a way to avoid the limits that are inherent in bus technology. SCI provides bus-like services by transmitting packets on a collection of point-to-point unidirectional links. The SCI protocols support cache coherence in a distributed-shared-memory multiprocessor model, message passing, I/O, and local-area-network-like communication over fiber optic or wire links. VLSI circuits that operate parallel links at 1000 MByte/s and serial … more
Date: September 1, 1991
Creator: Gustavson, D.B.
Partner: UNT Libraries Government Documents Department
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Physical Model of Lean Suppression Pressure Oscillation Phenomena: Steam Condensation in the Light Water Reactor Pressure Suppression System (PSS)

Description: Using the results of large scale multivent tests conducted by GKSS, a physical model of chugging is developed. The unique combination of accurate digital data and cinematic data has provided the derivation of a detailed, quantified correlation between the dynamic physical variables and the associated two-phase thermo-hydraulic phenomena occurring during lean suppression (chugging) phases of the loss-of-coolant accident in a boiling water reactor pressure suppression system.
Date: April 1, 1980
Creator: McCauley, E. W.; Holman, G. S.; Aust, E.; Schwan, H. & Vollbrandt, J.
Partner: UNT Libraries Government Documents Department
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Few-body binding energy correlations

Description: The effect of strongly linear few-nucleon binding energy correlations under variation of the potential has been found by the authors in the three-nucleon case. Their previous work is sketched as a basis for giving several extensions in the present note. Under realistic conditions there is a weak energy dependence for the kernels of the separable approximated Alt-Grassberger-Sandhas equations. The first-order correction E/sub T//sup 1/ is smaller for the Gauss potential than for the Yamaguchi; t… more
Date: January 1, 1980
Creator: Kroeger, H. & Perne, R.
Partner: UNT Libraries Government Documents Department
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Open and hidden charm muoproduction. [209 GeV]

Description: New results are presented on open and hidden charm and bottom production by 209-GeV muons interacting in a magnetized steel calorimeter. The upper limit on the production of T states by muons is sigma(..mu..N ..-->.. ..mu..UPSILONX)B(UPSILON ..-->.. ..mu mu..) < 22 x 10/sup -39/ cm/sup 2/ (90% confidence level). The distributions of elastically produced psi's are consistent with s-channel helicity conservation (SCHC) and disagree with psi dominance. From analysis of dimuon final states the cros… more
Date: September 1, 1980
Creator: Clark, A.R.; Johnson, K.J. & Kerth, L.T.
Partner: UNT Libraries Government Documents Department
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Taking scientific visualization to the masses

Description: The paper offers the premise that scientific visualization capabilities are generally available only to a limited subset of scientists. Several reasons for this are presented. The paper describes a collaborative project between scientists of the Defense Nuclear Agency and computer scientists at Los Alamos National Laboratory. This project's goal is to get visualization capabilities into the hands of many more scientists.
Date: January 1, 1991
Creator: Vigil, M. & Bouchier, S.
Partner: UNT Libraries Government Documents Department
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MSS generic model: a beginning

Description: To improve communications and understanding in the field of Mass Storage Systems (MSS), the need exists to formalize the definitions and concepts of MSS. This presentation gives MSS definitions followed by the development of a generic model for MSS.
Date: January 1, 1984
Creator: Collins, W. & Miller, S.
Partner: UNT Libraries Government Documents Department
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Treatment of radioactive mixed wastes in commercial low-level wastes

Description: Management options for three generic categories of radioactive mixed waste in commercial low-level wastes have been identified and evaluated. These wastes were characterized as part of a BNL study in which a large number of generators were surveyed for information on potentially hazardous low-level wastes. The general management targets adopted for mixed wastes are immobilization, destruction, and reclamation. It is possible that these targets may not be practical for some wastes, and for these… more
Date: January 1, 1985
Creator: Kempf, C.R. & MacKenzie, D.R.
Partner: UNT Libraries Government Documents Department
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MTX (Microwave Tokamak Experiment) facility and machine grounding plan

Description: A key issue in the design of fusion research experiments and their related facilities is the control of ground currents. Because of the large magnetic field, high voltages and high currents present in most of these installations, it is essential to avoid ground loops, and to control ground currents during both normal operations and fault conditions. This paper describes the grounding policy that was developed for MTX. The vault area was divided into zones, and each of the four walls was treated… more
Date: October 7, 1987
Creator: Bell, H.H.; Rice, B.W.; Petersen, D.E. & Herrera, C.H.
Partner: UNT Libraries Government Documents Department
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A measurement of the p p total cross section at radical s = 1800 GeV

Description: The {bar p}p differential elastic scattering cross section was measured at {radical}{bar s} = 1800 GeV, using an improved accelerator luminosity determination and CDF small angle data in the range of 0.05 {le} t {le} 0.2(GeV/c){sup 2}. By extrapolating the differential cross sections to t=0 and using the optical theorem we obtain a total cross section of {sigma}{sub tot}({bar p}p) = 72.0 {plus minus} 3.6 mb. This result is preliminary in the sense that we expect to further reduce the systematic… more
Date: October 1, 1991
Creator: White, S. (Rockefeller Univ., New York, NY (United States))
Partner: UNT Libraries Government Documents Department
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Some fundamental aspects of the optical potential for the interaction of fast neutrons with cobalt

Description: Differential elastic- and inelastic-scattering cross sections, measured from approx.1.5 to 10.0 MeV, are interpreted in terms of spherical-optical-statistical (OM) and coupled-channels models. A successful description of the differential elastic scattering below 10 MeV and the total cross section to 20.0 MeV is achieved using the spherical OM with energy-dependent strengths and geometries. These energy dependencies are large below approx.7.0 MeV, but become smaller and similar to those reported… more
Date: January 1, 1988
Creator: Smith, A. B. & Lawson, R. D.
Partner: UNT Libraries Government Documents Department
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Nuclear facility licensing, documentaion, and reviews, and the SP-100 test site experience

Description: The required approvals and permits to test a nuclear facility are extensive. Numerous regulatory requirements result in the preparation of documentation to support the approval process. The principal regulations for the SP-100 Ground Engineering System (GES) include the National Environmental Policy Act, Clean Air Act, and Atomic Energy Act. The documentation prepared for the SP-100 Nuclear Assembly Test (NAT) included an Environmental Assessment, state permit applications, and Safety Analysis … more
Date: June 1, 1991
Creator: Cornwell, B. C.; Deobald, T. L. & Bitten, E. J.
Partner: UNT Libraries Government Documents Department
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High performance, suppressed-fission ICF hybrid

Description: The neutronics aspects of an ICF hybrid concept are discussed. The breeding blanket consists of a beryllium neutron multiplier, metallic thorium fertile fuel and a liquid-lithium coolant. The fertile fuel fraction is 30 vol%, which is much higher than previous one-zone, suppressed-fission hybrid concepts. Fission in the bred /sup 233/U is suppressed by competition from tritium breeding reactions in /sup 6/Li. The total breeding ratio, T + F, is 2.05, and the total neutron energy deposited is 41… more
Date: December 1, 1983
Creator: Meier, W. R.
Partner: UNT Libraries Government Documents Department
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Experimental studies of field-reversed-configuration (FRC) confinement in FRX-C

Description: A primary purpose of the large bore (0.5 m dia.) FRX-C field-reversed theta pinch experiment is to study the scaling of plasma particle containment time, tau/sub N/, with major radius, R, of the field-reversed configuration (FRC). At 20 mtorr fill pressure the FRX-C plasma parameters, anti n approx. 4 x 10/sup 15/ c/sup -3/, T/sub e/ approx. 100 eV, T/sub i/ approx. 150 eV, are comparable to those obtained in the smaller bore (0.25 m dia.) FRX-B device. Under these conditions, the present measu… more
Date: January 1, 1982
Creator: Siemon, R. E.; Armstrong, W. T. & Bartsch, R. R.
Partner: UNT Libraries Government Documents Department
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Assessment of the response of spent fuel transports to malevolent acts

Description: This paper describes the results of a program conducted at Sandia National Laboratories (SNL) for the US Department of Energy to provide an experimental data base for more accurately assessing the radiological consequences from a hypothetical sabotage attack on a spent fuel shipping cask. The primary objectives of the program were limited to: (1) evaluating the effectiveness of selected high explosive devices (HED) in breaching full-size spent fuel casks, (2) quantifying and characterizing rele… more
Date: December 20, 1983
Creator: Sandoval, R.P.
Partner: UNT Libraries Government Documents Department
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Considerations for the use of synchrotron radiation sources to measure sub-keV x-ray photoabsorption cross sections in transmission

Description: Sub-keV x-ray photoabsorption cross section measurements in transmission have been made using synchrotron radiation beam lines on the VUV storage ring at the National Synchrotron Light Source (NSLS) and on the SPEAR storage ring at Stanford. The experimental considerations associated with making absolute measurements are reviewed, along with techniques for resolving difficulties. Suggestions for future measurements are included.
Date: February 1, 1988
Creator: Tirsell, K.G. & Del Grande, N.K.
Partner: UNT Libraries Government Documents Department
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