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The MINPACK-2 test problem collection

Description: Optimization software has often been developed without any specific application in mind. This generic approach has worked well in many cases, but as we seek the solution of larger and more complex optimization problems on high-performance computers, the development of optimization software should take into account specific optimization problems that arise in a wide range of applications. This observation was the motivation for the development of the MINPACK-2 test problem collection. Each of th… more
Date: June 1992
Creator: Averick, B. M.; Carter, R. G.; Xue, Guo-Liang & More, J. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A 2 to 4 nm high power FEL on the SLAC linac

Description: We report the results of preliminary studies of a 2 to 4 nm SASE FEL, using a photoinjector to produce the electron beam, and the SLAC linac to accelerate it to an energy up to 10 GeV. Longitudinal bunch compression is used to increases ten fold the peak current to 2.5 kA, while reducing the bunch length to the subpicosecond range. The saturated output power is in the multi-gigawatt range, producing about 10{sup 14} coherent photons within a bandwidth of about 0.2% rms, in a pulse of several mi… more
Date: September 1, 1992
Creator: Pellegrini, C.; Rosenzweig, J.; Nuhn, H. D.; Pianetta, P.; Tatchyn, R.; Winick, H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Seismic design of circular-section concrete-lined underground openings: Preclosure performance considerations for the Yucca Mountain Site

Description: Yucca Mountain, the potential site of a repository for high-level radioactive waste, is situated in a region of natural and man-made seismicity. Underground openings excavated at this site must be designed for worker safety in the seismic environment anticipated for the preclosure period. This includes accesses developed for site characterization regardless of the ultimate outcome of the repository siting process. Experience with both civil and mining structures has shown that underground openi… more
Date: July 1, 1992
Creator: Richardson, A.M. & Blejwas, T.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Potentiodynamic polarization studies on candidate container alloys for the Tuff Repository

Description: Cortest Columbus Technologies, Inc. (CC Technologies) is investigating the long-term performance of container materials used for high-level radioactive waste packages. This information is being developed for the Nuclear Regulatory Commission to aid in their assessment of the Department of Energy`s application to construct a geologic repository for disposal of high-level radioactive waste. This report summarizes the results of cyclic-potentiodynamic-polarization (CCP) studies performed on candid… more
Date: January 1, 1992
Creator: Thompson, N. G.; Beavers, J. A. & Durr, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Generation of low-divergence laser beams

Description: This invention is comprised of an apparatus for transforming a conventional beam of coherent light, having a Gaussian energy distribution and relatively high divergence, into a beam in which the energy distribution approximates a single, non-zero-order Bessel function and which therefore has much lower divergence. The apparatus comprises a zone plate having transmitting and reflecting zones defined by the pattern of light interference produced by the combination of a beam of coherent light with… more
Date: December 1992
Creator: Kronberg, J. W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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Preclosure radiological safety analysis for the exploratory shaft facilities; Yucca Mountain Site Characterization Project

Description: This study assesses which structures, systems, and components of the exploratory shaft facility (ESF) are important to safety when the ESF is converted to become part of the operating waste repository. The assessment follows the methodology required by DOE Procedure AP-6.10Q. Failures of the converted ESF during the preclosure period have been evaluated, along with other underground accidents, to determine the potential offsite radiation doses and associated probabilities. The assessment indica… more
Date: June 1, 1992
Creator: Ma, C. W.; Miller, D. D. & Jardine, L. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Three Dimensional, Multi-Chip Module

Description: The present invention relates to integrated circuit packaging technology, and particularly to three dimensional packages involving high density stacks of integrated circuits. A plurality of multi-chip modules are stacked and bonded around the perimeter by sold-bump bonds to adjacent modules on, for instance, three sides of the perimeter. The fourth side can be used for coolant distribution, for more interconnect structures, or other features, depending on particular design considerations of the… more
Date: December 31, 1992
Creator: Bernhardt, A. F. & Petersen, R. W.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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G-Tunnel Pressurized Slot-Testing Evaluations; Yucca Mountain Site Characterization Project

Description: Designers and analysts of radioactive waste repositories must be able to predict the mechanical behavior of the host rock. Sandia National Laboratories elected to conduct a development program to enhance mechanical-type measurements. The program was focused on pressurized slot testing and featured (1) development of an improved method to cut slots using a chain saw with diamond-tipped cutters, (2) measurements useful for determining in situ stresses normal to slots, (3) measurements applicable … more
Date: April 1, 1992
Creator: Zimmerman, R. M.; Sifre-Soto, C.; Mann, K. L.; Bellman, R. A. Jr.; Luker, S. & Dodds, D. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Underwater manipulator

Description: This invention is comprised of a self-contained, waterproof, water-submersible, remote-controlled apparatus provided for manipulating a device, such as an ultrasonic transducer for measuring crack propagation on an underwater specimen undergoing shock testing. The subject manipulator includes metal bellows for transmittal of angular motions without the use of rotating shaft seals or O-rings. Inside the manipulator, a first stepper motor controls angular movement. In the preferred embodiment, th… more
Date: December 31, 1992
Creator: Schrum, Phillip B. & Cohen, George H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

High Energy Density Capacitors Using Nano-Structure Multilayer Technology

Description: Today, many pulse power and industrial applications are limited by capacitor performance. While incremental improvements are anticipated from existing capacitor technologies, significant advances are needed in energy density to enable these applications for both the military and for American economic competitiveness. We propose a program to research and develop a novel technology for making high voltage, high energy density capacitors. Nano-structure multilayer technologies developed at LLNL ma… more
Date: August 1, 1992
Creator: Barbee, T. W., Jr.; Johnson, G. W. & O`Brien, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurements of barium photocathode quantum yields at four excimer laser wavelengths

Description: The electron quantum yields from barium cathodes excited by excimer laser radiation at 193, 248, 308, and 351 nm have been determined. Experiments with different cathode surface preparation techniques reveal that deposition of barium film a few microns thick on a clean copper surface under moderate vacuum conditions achieves relatively high quantum efficiencies. Quantum yields measured from surfaces prepared in this manner are 2.3 x 10{sup -3} at 193 nm, 7.6 x 10{sup - 4} at 248 nm, 6.1 x 10{su… more
Date: June 1992
Creator: Van Loy, M. D.; Young, A. T. & Leung, K. N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Suppression of beam induced pulse shortening modes in high power RF generator TW output structures

Description: Several different style 11.4 GHz relativistic klystrons, operating with beam pulse widths of 50 ns and using large aperture, tapered phase-velocity TW structures,` have recently demonstrated output RF power levels in the range of 100 to 300 MW without breakdown or pulse shortening. To extend this performance into the long pulse regime (1 {mu}s) or to demonstrate a threefold increase in output power by using higher currents, the existing TW circuit designs must be modified (a) to reduce the cavi… more
Date: December 31, 1992
Creator: Haimson, J. & Mecklenburg, B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Structural walkdown procedure for natural phenomena engineering analyses at the Oak Ridge Y-12 Plant

Description: This walkdown plan outlines the process to be followed and the pertinent structural information to be collected for the assessment of the adequacy of existing or future natural phenomena analyses for the Oak Ridge Y-12 Plant. This approach is being followed in order to develop input to assess that the critical facilities were constructed in accordance with the design drawings, that any major configuration changes to the principle structures are identified and that the location of major equipmen… more
Date: June 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Remedial shielding concepts for line D and line D facilities, Los Alamos Meson Physics Facility, Los Alamos National Laboratory, Los Alamos, New Mexico: Appendix 1. Final report

Description: This appendix contains preliminary structural assessments for tunnel sections 6(T/21), 5(21/21), 3(21/21), 2(21/21), 1(21/21), 2(21/24), 1(21/24), 3(23/23), 5(21/21)S, 4(22/22), and 5(2/8). The tunnel sections are subjected to vertical and horizontal loads estimated as 115 lbs/ft{sup 2} for each 1 ft of soil covering the structure and a horizontal load equivalent to 0.3 of the estimated cover load. Determination of shear, axial and bending stresses and associated deformations are included. Youn… more
Date: May 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Borehole Stability in Densely Welded Tuffs

Description: The stability of boreholes, or more generally of underground openings (i.e. including shafts, ramps, drifts, tunnels, etc.) at locations where seals or plugs are to be placed is an important consideration in seal design for a repository (Juhlin and Sandstedt, 1989). Borehole instability or borehole breakouts induced by stress redistribution could negate the effectiveness of seals or plugs. Breakout fractures along the wall of repository excavations or exploratory holes could provide a preferent… more
Date: July 1, 1992
Creator: Fuenkajorn, K. & Daemen, J. J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Proposed changes to FED-STD-209 and IES-RP-CC006

Description: In the United States, two documents have been considered basic to work with cleanrooms and controlled environments. They are {ital Cleanroom and Work Station Requirements, Controlled Environment{emdash}Federal Standard 209D}, published by the U.S. General Services Administration, and {ital Recommended Practice for Testing Cleanrooms} (IES-RP-CC006), published by the Institute of Environmental Sciences (IES). FED-STD-209 is the authoritative document on air cleanliness classification and cleanro… more
Date: December 31, 1992
Creator: Mielke, R. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Pressure safety program Lawrence Livermore National Laboratory

Description: The Lawrence Livermore National Laboratory (LLNL) is a Research and Development facility. Programs include research in: nuclear weapons, energy, environmental, biomedical, and other DOE funded programs. LLNL is managed by the University of California for the Department of Energy. Many research and development programs require the use of pressurized fluid systems. In the early 1960`s, courses were developed to train personnel to safely work with pressurized systems. These courses served as a fou… more
Date: October 1, 1992
Creator: Borzileri, C. & Traini, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Annual report 1991 - Science and Engineering Alliance, Inc.

Description: Nineteen ninety-one was a busy and productive year for the Science and Engineering Alliance (SEA). This report covers the major programs and activities of the SEA during the fiscal year 1991 (the year ending September 30, 1991), which was the first year of operation. Where warranted, the report highlights some of the events from the last quarter of the calendar year. The SEA is a non-profit consortium of four Historically Black Colleges and Universities. The SEA members are Alabama A&M Universi… more
Date: February 21, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A pipe cleaning machine: ERIP recommendation No. 571

Description: The subject invention, ``A Pipe Cleaning Machine,`` known as ``Buffy,`` is a device that strips pipeline of its coating down to the metal. The apparatus consists of a series of motor-driven metal brushes mounted on a ring structure that fits the around the pipe`s circumference. Once stripped, the pipeline may or may not be abrasive-blasted, but is then coated and wrapped, and the trench is back-filled. Present models of the Buffy can be used on pipe up to 36`` in diameter. One of the device`s u… more
Date: June 12, 1992
Creator: Bratcher, H. Jr.; Hinick, M.B. & Balsam, J.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Safety assessment requirements for onsite transfers of radioactive material

Description: This document contains the requirements for developing a safety assessment document for an onsite package containing radioactive material. It also provides format and content guidance to establish uniformity in the safety assessment documentation and to ensure completeness of the information provided.
Date: May 1, 1992
Creator: Opperman, E.K.; Jackson, E.J. & Eggers, A.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Criteria for onsite transfers of radioactive material

Description: A general description of the requirements for making onsite transfers of radioactive material is provided in Chapter 2, along with the required sequencey of activities. Various criteria for package use are identified in Chapters 3-13. These criteria provide protection against undue radiation exposure. Package shielding, containment, and surface contamination requirements are established. Criteria for providing criticality safety are enumerated in Chapter 6. Criteria for providing hazards inform… more
Date: December 31, 1992
Creator: Opperman, E.K.; Jackson, E.J. & Eggers, A.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Test fire environmental testing operations at Mound Applied Technologies

Description: This paper describes Mound Laboratory`s environmental testing operations. The function of environmental testing is to perform quality environmental (thermal, mechanical, spin, resistance, visual) testing/conditioning of inert/explosive products to assure their compliance with specified customer acceptance criteria. Capabilities, organization, equipment specifications, and test facilities are summarized.
Date: March 1, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lid heater for glass melter

Description: This invention is comprised of a glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes beginning where the tubes leave the melter interior and nickel connectors to connect the tubes electrically in series. An applied voltage causes the tubes to generate heat of electrical resistance for melting frit inje… more
Date: December 31, 1992
Creator: Phillips, T.D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

BPACK -- A computer model package for boiler reburning/co-firing performance evaluations. User`s manual, Volume 1

Description: This manual presents and describes a package of computer models uniquely developed for boiler thermal performance and emissions evaluations by the Energy and Environmental Research Corporation. The model package permits boiler heat transfer, fuels combustion, and pollutant emissions predictions related to a number of practical boiler operations such as fuel-switching, fuels co-firing, and reburning NO{sub x} reductions. The models are adaptable to most boiler/combustor designs and can handle bu… more
Date: June 1, 1992
Creator: Wu, K. T.; Li, B. & Payne, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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