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2D PERT. A TWO-DIMENSIONAL PERTURBATION CODE

Description: Given multigroup fluxes and adjoint fluxes of any cylindrical R-Z configuration, 2D PERT may compute: the prompt-neutron lifetime; the relative worth of various delayed neutrons; the integrals of capture, fission, etc., of given materials over any given region; local perturbations, i.e., danger coefflcients; and integrated perturbations, i.e., reactivity effect of uniform variation in the cross sections affecting a whole region. 2D PERT is programmed for a 32K IBM-704 using 3 tape units. The co… more
Date: May 1, 1962
Creator: Chaumont, J. M. & Koerner, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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REACTIVITY CALIBRATIONS AND FISSION-RATE DISTRIBUTIONS IN AN UNMODERATED, UNREFLECTED URANIUM-MOLYBDENUM ALLOY RESEARCH PROGRAM

Description: Completion of zero-power critical experiments with the ORNL Health Physics Research Reactor is reported. A description is given concerning these experiments which were used to determine the critical size, fission-rate distributions, reactivity calibrations of its movable parts, the temperature coefficient of reactivity, and the reactivity effects of the presence of neutron- reflecting materials adjacent to the reactor. (J.R.D.)
Date: May 10, 1962
Creator: Mihalczo, J.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation and Measurement of the Transient Temperature in a Low- Enrichment UO$sub 2$ Fuel Rod During Large Power Excursions

Description: The results of Spert I in-pile transient tests of a rodtype, low- enrichment UO/sub 2/ fuel element are presented. The tests were performed to investigate the possibility of damage to such long thermal-time-constant fuel rods when subjected to short-period power excursions, and to test the effectiveness of an instrumentation technique for measurement of UO/sub 2/ fuel temperatures within the rods. In an initial series of power excursion tests, in which the range of reactor periods was from appr… more
Date: May 18, 1962
Creator: Houghtaling, J. E.; Quigley, T. M. & Spano, A. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrostatic turbulence and transport in the RFP edge

Description: This thesis details measurements of electrostatic turbulence and transport in the Madison Symmetric Torus reversed field pinch. The electrostatic fluctuation levels are found to be large, with {tilde n}{sub e}/n{sub e} {approximately} 30%--55% and {tilde T}{sub e}/T{sub e} {approximately} 15%--40%. The frequency and wavenumber spectra are broad, with {Delta}n {approximately} 70--150 and {Delta}m {approximately} 3--6, and differ from measured magnetic fluctuation spectra. The transport inferred … more
Date: May 1, 1992
Creator: Spragins, C.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The structure of perturbative quantum gravity on a de Sitter background

Description: Classical gravitation on de Sitter space suffers from a linearization instability. One consequence is that the response to a spatially localized distribution of positive energy cannot be globally regular. We use this fact to show that no causal Green's function can give the correct linearized response to certain bilocalized distributions, even though these distributions obey the constraints of linearization stability. We avoid the problem by working on the open submanifold spanned by conformal … more
Date: May 1, 1992
Creator: Tsamis, N. C. & Woodward, R. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vortices associated with toroidal ion temperature gradient driven fluctuations

Description: The three nonlinear hydrodynamic equations for potential, parallel ion velocity and ion pressure used in simulations of the toroidal ion temperature gradient driven fluctuations and transport in a shear magnetic field are analyzed for coherent vortex structures. Two types of vortex structures are found: one type for weak shear that is a generalization of the usual modon vortex construction and the second type of solution for strong magnetic shear where the convective nonlinearity in the paralle… more
Date: May 1, 1992
Creator: Horton, W. (Texas Univ., Austin, TX (United States). Inst. for Fusion Studies); Jovanovic, D. (Belgrade Univ. (Yugoslavia). Inst. za Fiziku) & Rasmussen, J.J. (Association Euratom-Risoe National Lab., Roskilde (Denmark))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shining On: A primer on solar radiation data

Description: This document is a primer on solar radiation data. General uses of solar energy are presented. The manner in which solar radiation data is used to aid engineers in optimizing the use of solar thermal conversion and photovoltaic conversion is discussed. Methods for acquiring and assimilating the solar radiation data are illustrated. This would include the design and use of pyranometers and pyrheliometers. Seasonal and geographical variations in solar flux reaching the earth are evaluated. Other … more
Date: May 1, 1992
Creator: Dunlap, M.A.; Cook, G. (eds.); Marion, B.; Riordan, C. & Renne, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Numerical simulations of mesoscale precipitation systems. Final progress report, 1 April-30 June 1981

Description: A numerical model designed for the study of mesoscale weather phenomena is presented. It is a three-dimensional, time-dependent model based upon a mesoscale primitive-equation system, and it includes parameterizations of cloud and precipitation processes, boundary-layer transfers, and ground surface energy and moisture budgets. This model was used to simulate the lake-effect convergence over and in the lee of Lake Michigan in late fall and early winter. The lake-effect convergence is created in… more
Date: May 12, 1982
Creator: Dingle, A. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Safety Calculations for MsSRE

Description: A number of conceivable reactivity accidents were analyzed, using conservatively pessimistic assumptions and approximations, to permit evaluation of reactor safety. Most of the calculations, which are described in detail, were performed by a digital kinetics program, MURGATROYD. Some analog analyses were also made. None of the accidents which were analyzed lead to catastrophic failure of the reactor, which is the primary consideration. Some internal damage to the reactor from undesirably high t… more
Date: May 15, 1962
Creator: Haubenreich, P.N. & Engel, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Edge gradient and safety factor effects on electrostatic turbulent transport in tokamaks

Description: Electrostatic turbulence and transport measurements are performed on the Tokapole-II tokamak at the University of Wisconsin-Madison, as the safety-factor and the edge equilibrium gradients and varied substantially. Tokapole-II is a poloidal divertor tokamak capable of operating at a wide range of safety factors due to its unique magnetic limiter configuration. It also has retractable material limiters in a large scrape-off region, which permits the study of edge boundary conditions like density… more
Date: May 1, 1992
Creator: Tan, Ing Hwie.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Application of digital image analysis techniques to the Geyser's data and topography

Description: This paper describes the results of digital image analysis and techniques applied to acoustic sounder data and topographic relief in the Geyser's region. The two dimensional fast Fourier transform (2DFFT) represents the spacial variability of a photographic image. The spacial variability of topography in complex terrain can be represented in this way and insight into degree of complexity and dominating spacial wavelengths can be gained. This was performed for a 16 km square digitized topographi… more
Date: May 5, 1980
Creator: Porch, W.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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MHD computation of feedback of resistive-shell instabilities in the reversed field pinch

Description: MHD computation demonstrates that feedback can sustain reversal and reduce loop voltage in resistive-shell reversed field pinch (RFP) plasmas. Edge feedback on {approximately}2R/a tearing modes resonant near axis is found to restore plasma parameters to nearly their levels with a close-fitting conducting shell. When original dynamo modes are stabilized, neighboring tearing modes grow to maintain the RFP dynamo more efficiently. This suggests that experimentally observed limits on RFP pulselengt… more
Date: May 1, 1992
Creator: Zita, E.J.; Prager, S.C. (Wisconsin Univ., Madison, WI (United States). Plasma Physics Research); Ho, Y.L. & Schnack, D.D (Science Applications International Corp., San Diego, CA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Kinetics of Treat Used as a Test Reactor

Description: An analysis is presented concerning the reactor kinetics of TREAT used as a pulsed, engineering test reactor for fast reactor fuel element studies. A description of the reactor performance is given for a wide range of conditions associated with its use as a test reactor. Supplemental information on meltdown experimentation is included. (J.R.D.)
Date: May 1962
Creator: Dickerman, C. E.; Johnson, R. D. & Gasidlo, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Dworshak Dam Impact (Impacts) Assessment and Fishery Investigation.

Description: Kokanee abundance, estimated from July trawl data, was 1.2 million fish in 1988, including 553,000 fry, 501,000 yearlings and 156,000 subadults. Spawning trend data indicated escapement was up threefold compared to 1987, despite a sport harvest of 207,000 kokanee averaging 258 mm caught at a rate of 1.5 fish per hour. An estimated 40,000 kokanee were counted during the September peak of spawning in five tributaries of the reservoir. Size of adult fish was below average at 293 mm. Zooplankton de… more
Date: May 1, 1989
Creator: Mauser, Gregg
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Passive test cell data for the solar laboratory, Winter 1980-81

Description: Testing was done during the 1980-81 winter in 400 ft/sup 3/ test cells at the Los Alamos National Laboratory Solar Lab. This testing was done primarily to determine the relative efficiency of various passive solar heating concepts and to obtain data that could be used to validate computer simulation programs. The passive solar systems tested were Trombe wall with and without selective absorber, water wall, phase-change wall, direct gain, a heat-pipe collector, and two sunspace geometries. The h… more
Date: May 1, 1982
Creator: McFarland, R.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of the test method for prediction of air conditioning equipment seasonal performance

Description: The test procedure, Method of Testing, Rating and Estimating the Seasonal Performance of Central Air-Conditioners and Heat Pumps Operating in the Cooling Mode, has been analyzed. The analysis of the test procedure incorporated two main functions: (1) to determine the validity of the test procedure; and (2) to determine if there are other alternate methods of obtaining the same results with less testing burden. Data were collected from industry and analyzed for any significant trends. Certain co… more
Date: May 1, 1980
Creator: Thomas, S. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reservoir response to tidal and barometric effects

Description: Solid earth tidal strain and surface loading due to fluctuations in barometric pressure have the effect, although extremely minute, of dilating or contracting the effective pore volume in a porous reservoir. If a well intersects the formation, the change in pore pressure can be measured with sensitive quartz pressure gauges. Mathematical models of the relevant fluid dynamics of the well-reservoir system have been generated and tested against conventional well pumping results or core data at the… more
Date: May 29, 1980
Creator: Hanson, J.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analytical summary of experimental data from two years of hourly sequential precipitation samples at Brookhaven National Laboratory

Description: Hourly precipitation samples were collected at Brookhaven National Laboratory from June 1976 through May 1978 with the Brookhaven Automatic Sequential Precipitation Sampler. Conventional meteorological data were recorded for each sample period. The samples were analyzed for pH, conductivity, and concentrations of sulfate, nitrogen, ammonium, sodium, and chloride ions. Ratios of selected ions, excess conductivity above the H/sup +/ contribution, and excess sulfate and chloride above the seawater… more
Date: May 1, 1979
Creator: Raynor, G. S. & Hayes, J. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electric rate structures for thermal energy storage evaluation

Description: Future electric rate structures are critical to thermal energy storage (TES) technologies that are specifically designed to take advantage of electric energy costs that vary depending on the magnitude, duration, and timing of power demand (e.g., cool storage). In fact, rate structure characteristics may affect the TES system design and operating approach as well as economic feasibility. The objective of this study, conducted by the Pacific Northwest Laboratory for the US Department of Energy, w… more
Date: May 1, 1991
Creator: Brown, D. R.; Garrett, S. M. & Sedgewick, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Genetic and Morphological Variation in Natural Populations of the Red Shiner, Notropis lutrensis, and their Relationship to Adaptation in a Generalist Species

Description: Twenty-two natural populations of the red shiner minnow, Notropis lutrensis were examined for morphological and genetic variation. This research was aimed at testing the hypothesis that morphological and genetic variation was primarily influenced by the degree of gene flow between populations. Ten linear measurements were taken from each of 1320 specimens. Morphological characters were adjusted for differential growth by least squares linear regression techniques. Genetic variability was estima… more
Date: May 1984
Creator: Wooten, Michael Conrad
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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