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in subjects: "Motion"

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State-of-the-art for evaluating the potential impact of tectonism and volcanism on a radioactive waste repository

Most estimates of the time required for safe isolation of radioactive wastes from the biosphere range from 100,000 to 1,000,000 years. For such long time spans, it is necessary to assess the potential effects of geologic processes such as volcanism and tectonic activity on the integrity of geologic repositories. Predictions of geologic phenomena can be based on probabilistic models, which assume a random distribution of events. The necessary historic and geologic records are rarely available to… more

Date: July 16, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Diffusion of Slow Electrons in Gases

The properties of electrons in a gas and an external electric field, e.g., agitation velocity, free path, energy lost per collision, and collision cross sections, were determined for electrons of energy less than 2 ev in a large number of gases. The computations were made from previously measured values for Townsend's energy factor or the ratio of electron agitation energy to molecule thermal energy. Results are presented for hydrogen, nitrogen, carbon dioxide, methane, ethylene, cyclopropane, … more

Date: October 24, 1961

Creator: Forester, D. W. & Cochran, L. W.

Item Type: Thesis or Dissertation

Partner: UNT Libraries Government Documents Department

open access

Acceleration of beam ions during major radius compression in TFTR

Tangentially co-injected deuterium beam ions were accelerated from 82 keV up to 150 keV during a major radius compression experiment in TFTR. The ion energy spectra and the variation in fusion yield were in good agreement with Fokker-Planck code simulations. In addition, the plasma rotation velocity was observed to rise during compression.

Date: September 1, 1985

Creator: Wong, K. L.; Bitter, M.; Hammett, G. W.; Heidbrink, W.; Hendel, H.; Kaita, R. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Vibration considerations in the design of the Advanced Photon Source at Argonne National Laboratory

The Advanced Photon Source (APS), a new synchrotron radiation facility being built at Argonne National Laboratory, will provide the world's most brilliant X-ray beams for research in a wide range of technical fields. Successful operation of the APS requires an extremely stable positron closed orbit. Vibration of the storage ring quadrupole magnets, even in the submicron range, can lead to distortion of the positron closed orbit and to potentially unacceptable beam emittance growth, which result… more

Date: January 1, 1991

Creator: Jendrzejczyk, J.A. & Wambsganss, M.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Western Gas Sands Project. Status report

The progress during December, 1977 of the major government sponsored endeavors undertaken to increase gas production from the low permeability gas sands of the western United States is summarized. The USGS is continuing geological and geophysical studies in the four major western basins to better characterize the resource base. Shipping arrangements for the core donated to the USGS by Inexco WASP (a well drilled for possible nuclear explosive stimulation in Wyoming) have been made, and cores fo… more

Date: February 1, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Seismic hazard evaluation for the high-flux isotope reactor (HFIR) Oak Ridge National Laboratory, Oak Ridge, Tennessee

This study investigates the probabilistic hazard of earthquake-induced ground shaking at the HFIR facility, Oak Ridge, Tennessee. These results will be used to calculate plant response and potential effects in a Probabilistic Risk Assessment (PRA). For this purpose, several guidelines apply to this work. First, both the frequency of exceedance and the uncertainty in frequency of exceedance of various ground motion levels must be represented. These are required by the PRA so that the frequency a… more

Date: September 1, 1991

Creator: McGuire, R.K. & Toro, G.R. (Risk Engineering, Inc., Golden, CO (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Painter Street Overcrossing: Linear-elastic finite element dynamic analysis

Painter Street Overcrossing is a two span continuous box girder bridge Highway 101 near Rio Del, California. It has been heavily instrumented with strong motion accelerometers by the California Department of Mines and Geology Strong Motion Instrumentation Program. On 11/21/86, the response of the bridge to a magnitude 5.1 earthquake (epicentral distance 32 km) was measured. This report considers the data generated at stations six, seven, and eight, during this earthquake. Station six recorded t… more

Date: August 1, 1991

Creator: Salveson, M.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

RMF concept: a rotating-magnetic-field technique for driving steady plasma currents in compact toroid devices

The generation and/or sustaining of a Compact Toroid (CT) configuration using the RMF technique is a relatively new and unknown concept. In this report the basic principles, historical development, and current theoretical understanding of this concept are reviewed. Significant experimental and theoretical results, potential problem areas, and recommendations for the direction of future work are discussed. An illustrative analysis of the application of the RMF technique to a CT reactor is presen… more

Date: September 1, 1980

Creator: McKenna, K.F.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Seismic fragility analysis of buried steel piping at P, L, and K reactors

Analysis of seismic strength of buried cooling water piping in reactor areas is necessary to evaluate the risk of reactor operation because seismic events could damage these buried pipes and cause loss of coolant accidents. This report documents analysis of the ability of this piping to withstand the combined effects of the propagation of seismic waves, the possibility that the piping may not behave in a completely ductile fashion, and the distortions caused by relative displacements of structu… more

Date: October 1, 1989

Creator: Wingo, H.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Advances in materials science, Metals and Ceramics Division. Triannual progress report, February-May 1980

Research is reported in the magnetic fusion energy and laser fusion energy programs, aluminium-air battery and vehicle research, geothermal research, nuclear waste management, basic energy science, and chemistry and materials science. (FS)

Date: August 1, 1980

Creator: Truhan, J.J. & Gordon, K.M. (eds.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Phase Transformations in Alumina. Technical Report, May to December 1961

e transformation studies showed that synthetic aluminas produced in the laboratory were not transformed to alpha alumina at 400 to 700' deg n the presence of nitric acid and water vapor. Amorphous aluminn produced in the pilot plant was transformed to alpha alumina. This indicated that the amorphous alumina produced in the pilot plant is structurally predisposed to form alpha alumina. Most additives did not appear to have any special effects. Lithium formed zeta alumina, LiAl/sub 5/O/sub 8/. Ph… more

Date: December 1, 1961

Creator: Eding, H J; Huggins, M L & Brown, A G

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Atmospheric Signals From Explosions and Their Interpretation

Results are reported from a series of experimental highexplosive shots under inversion conditions at the Nevada Test Site which were made in an attempt to refine blast prediction techniques. Applications of the data in determinations of the amount of energy which remains in the blast wave as it reaches acoustic level and in determinations of the magnitude of the reflection factor when the blast wave strikes the ground are discussed. Data on shock wave propagation are presented graphically. It i… more

Date: December 1, 1959

Creator: Reed, J. W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Seismic isolation of an electron microscope

A unique two-stage dynamic-isolation problem is presented by the conflicting design requirements for the foundations of an electron microscope in a seismic region. Under normal operational conditions the microscope must be isolated from ambient ground noise; this creates a system extremely vulnerable to seismic ground motions. Under earthquake loading the internal equipment forces must be limited to prevent damage or collapse. An analysis of the proposed design solution is presented. This study… more

Date: January 1, 1980

Creator: Godden, W.G.; Aslam, M. & Scalise, D.T.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Evaluation of physical characteristics and phenomena, sensitivity and interaction effects, performance criteria and output requirements for a station keeping subsystem engineering evaluation tool (SKEET)

The fundamental purpose for SKEET is to provide a means of simulating and evaluating OTEC platform SKSS performance. This evaluation capability may be employed in the process of a design review, comparison of alternative concepts, operational planning, establishing risk and reliability criteria and a host of other applications. However, the central requirement is that SKEET have the capability to predict the excursions on motions of the platform and loads on the SKSS as a result of environmenta… more

Date: December 1, 1979

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Sandia Laboratories hybrid computer and motion simulator facilities

Hybrid computer and motion simulator facilities at Sandia National Laboratories include an AD/FIVE-AD10-PDP11/60, an AD/FIVE-PDP11/45, an EAI7800-EAI640, an EAI580/TR48-Nova 800, and two Carco S-45OR-3/R-493A three-axis motion simulators. An EAI680 is used in the analog mode only. This report describes the current equipment.

Date: May 1, 1980

Creator: Curry, W. H. & French, R. E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Surveillance of 18 Hz and 60 Hz components of ground motion at the APS site

The objectives of this study are to determine the location and source of the 18- and 60-Hz vibration and to eliminate or reduce its amplitude in the APS Facility. To accomplish this it is necessary to know the time of occurrence and then, to utilize triangulation methods to identify the location of the source. It its time sequence is known, it may be possible to correlate it with the operation of some equipment at or near the site. Therefore, a major effort was made to obtain the time sequence … more

Date: March 1, 1990

Creator: Jendrzejczyk, J.A.; Wambsganss, M.W. & Smith, R.K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Smoothly waning, symmetrically expanding, cavity-pressure loads in earth materials

An approximate solution for the pressure loading required to expand a spherical cavity in rock and soil targets is derived. A dual characterization of fracture and flow material model is used. Frictional resistance to flow is also included. Non-linear volumetric strain hardening is modeled with bi-linear curves and unloading is assumed to be non-dilative. Applications of this solution form to the prediction of pressure loading on slender, convex-nosed earth penetrators and on spherically-nosed … more

Date: January 1, 1982

Creator: Priddy, T.G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fragmentation in rotating isothermal protostellar clouds

Results of an extensive set of 3-D hydrodynamic calculations that have been performed to investigate the susceptibility of rotating clouds to gravitational fragmentation are presented. (GHT)

Date: January 1, 1980

Creator: Bodenheimer, P.; Tohline, J.E. & Black, D.C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Analysis of general circulation model results and comparison with regional climatic data, Task 3

On time scales of greater than one year the variability of weather and climate on a large path of the Earth is dominated by the Southern Oscillation. While current theories of this phenomenon have clarified the role of the interaction between the ocean and the atmosphere in maintaining this oscillation it has so far been unclear whether the Southern Oscillation originates in the ocean, in the atmosphere or during the interaction between the ocean and the atmosphere. In this study we compared si… more

Date: January 1, 1989

Creator: Cess, R.D. & Hameed, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Conceptual designs for modular OTEC SKSS. Final report

This volume presents the results of the first phase of the Station Keeping Subsystem (SKSS) design study for 40 MW/sub e/ capacity Modular Experiment OTEC Platforms. The objectives of the study were: (1) establishment of basic design requirements; (2) verification of technical feasibility of SKSS designs; (3) identification of merits and demerits; (4) estimates of sizes for major components; (5) estimates of life cycle costs; (6) deployment scenarios and time/cost/risk assessments; (7) maintena… more

Date: February 29, 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Soil-structure interaction effects for laterally excited liquid-tank system

Following a brief review of the mechanical model for liquid-storage tanks which permits consideration of the effects of tank and ground flexibility, and lateral and rocking base excitations, the effects of both kinematic and inertia interaction effects on the response of the tank-liquid system are examined and elucidated. The free-field motion is defined by a power spectral density function and an incoherence function, which characterizes the spatial variability of the ground motion due to the … more

Date: January 1, 1992

Creator: Tang, Yu (Argonne National Lab., IL (United States)) & Veletsos, A.S. (Rice Univ., Houston, TX (United States). Dept. of Civil Engineering)

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Hydrodynamic design loads for the OTEC cold water pipe

Ocean current and/or plant motion crossflows induce time dependent hydrodynamic loads on the OTEC cold water pipe due to vortex shedding. Design criteria were established for mean and fluctuating loads based on a review of the literature, analysis of test data acquired by SAI under a previous experimental program and an analytical extension of test results to higher Reynolds number. Baseline loads were specified for rigid cylinders in uniform flows. Modifications to the loads by current shear, … more

Date: September 1, 1978

Creator: Hove, D.; Shih, W. & Albano, E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Fractal behavior of single-particle trajectories and isosets in isotropic and anisotropic fluids

Molecular dynamics simulations for a variety of systems in 2 spatial dimensions reveal fractual behavior associated with trajectories and isosets of single particle motion. The fractual dimensions of trajectories and isosets are 2 and 0.5, respectively, irrespective of the nature of the interparticle interaction or thermodynamic state of the system. Recently, we have investigated the fractual behavior of diffusing Ag ions in the superionic phase of Ag/sub 2/S. MD calculations have shown that th… more

Date: August 1, 1985

Creator: Kalia, R.K.; Vashishta, P. & de Leeuw, S.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Vibration study of the APS storage ring 0. 8 meter quadrupole magnet/magnet support assembly

The objectives of this study are as follows: Determine the vibration characteristics (frequency, damping, and mode shapes) of the magnet on prototypic supports (the actual mounting system used to mount the magnet on the girder). Measure system response to ambient floor motion. Measure the effect of various modifications to determine if the magnet response can be modified to minimize unwanted response characteristics. Modifications investigated include support schemes, increasing system damping,… more

Date: June 1, 1991

Creator: Jendrzejczyk, J.A.; Wambsganss, M.W. & Smith, R.K.

Item Type: Report

Partner: UNT Libraries Government Documents Department