UNT Libraries Government Documents Department - 202 Matching Results

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Absolute Glovebox Ventilation Filtration System with Unique Filter Replacement Feature

Description: A glovebox ventilation system was designed for a new plutonium-238 processing facility that provided 1) downdraft ventilation, 2) a leak tight seal around the High Efficiency Particulate Air (HEPA) filters, and 3) a method for changing the filters internally without risk of contaminating the laboratory.
Date: December 31, 1975
Creator: Freeman, S. S. & Slusher, W. A.
Item Type: Refine your search to only Report
open access

Acoustic detection of the collapse of a sodium vapor bubble in an infinite sea of sodium

Description: A discussion of the problem of sodium vapor bubble collapse is presented. The physics of vapor collapse is presented in light of the work by Peppler et al. Theoretical estimates of the sound source level based on the work by Rayleigh and Judd are compared to an approximate pressure-volume work approach and recent experimental observations. Reactor ambient noise and transmission loss considerations are presented in regard to their impact on this detection problem. A methodology is proposed which… more
Date: December 1, 1975
Creator: Carey, W. M.
Item Type: Refine your search to only Report
open access

Activation Measurements of High Energy Deuterons in the Plasma Focus Device

Description: Nuclear activation techniques were used to measure the fluence of high energy deuterons in a plasma focus device having a stored energy of 75 kilojoules at 18 kV. The $sup 12$C(d,n)$sup 13$N (330 keV threshold) and $sup 27$Al(d,p)$sup 28$Al reactions were used to provide both an absolute number of high energy deuterons and an average energy, evaluated from the $sup 13$N/$sup 28$Al ratio calculated for various energies by Young. Previous measurements indicated more than 10$sup 15$ deuterons coul… more
Date: December 1, 1975
Creator: Gullickson, R. L. & Sahlin, H. L.
Item Type: Refine your search to only Article
open access

Analysis of magnetic neutron scattering data

Description: The determination of the proper magnetic form factors for use in the analysis of diffuse-scattering data is discussed, and that information which is immediately available from such data is considered. Apparent discrepancies between the results of diffuse scattering and diffraction experiments on ferromagnetic Ni-Cu alloys are resolved. It is shown that the data indicate that the negative spin density usually attributed to conduction electrons instead arises largely from the overlap of localized… more
Date: December 1, 1975
Creator: Felcher, G.; Garland, J.W.; Cable, J.W. & Medina, R.
Item Type: Refine your search to only Article
open access

Analysis of targets with nonuniform composition as a function of depth: elastic and inelastic scattering

Description: An analytical technique to reduce yield versus energy spectra to impurity concentration versus depth is described. It applies to both elastic and inelastic reactions and calculates the depth distribution profile directly from the observed data. It uses the experimental spectrum to be analyzed, stopping cross sections and reaction cross sections to obtain the desired depth scales and the depth dependence of the target composition. A computer code, NUCREA, has been developed to perform such analy… more
Date: December 1, 1975
Creator: Langley, R. A.
Item Type: Refine your search to only Report
open access

Analysis of the binary cycle for geothermal power generation

Description: Exchanging heat from hot geothermal fluid to a secondary working fluid which is then expanded through a turbine appears to be the best way of producing electrical power from a medium temperature geothermal resource. A study has been made to determine the conceptual design state points for a dual boiling system which utilizes isobutane as the working fluid. The results of this work and the sensitivity of plant performance to variations from nominal design points are presented. In addition, varia… more
Date: December 1, 1975
Creator: Madsen, W. W. & Ingvarsson, I. J.
Item Type: Refine your search to only Report
open access

Angle of crack propagation for a vertical hydraulic fracture

Description: Using the strain-energy-density-factor (S) theory, the positive fracture angle +theta/sub o/ (the initial fracture angle of crack propagation) of a near-vertical crack is predicted by using the opening- and sliding-mode stress-intensity factors in the presence of the overburden pressure, the least in situ horizontal principal stress, and the borehole fluid pressure. The crack spreads in the positive theta/sub o/ direction (counter-clockwise) in the plane for which S is a minimum, S/sub min/. It… more
Date: December 1, 1975
Creator: Sarda, J. P. & Hsu, Y. C.
Item Type: Refine your search to only Report
open access

Annual environmental monitoring summary, July 1974--June 1975

Description: Monsanto Research Corporation operates Mound Laboratory, a government-owned facility of the U.S. Energy Research and Development Administration, at Miamisburg, Ohio. Mound Laboratory is an integrated research, development, and production facility performing work in support of ERDA weapon and non-weapon programs with emphasis on explosive and nuclear technology. Mound Laboratory originated as a technical organization in 1943 when Monsanto Chemical Company was requested to accept responsibility f… more
Date: December 1, 1975
Item Type: Refine your search to only Report
open access

Anomalous transport and stabilization of collisionless drift-wave instabilities

Description: Extensive numerical simulations have been carried out to study the enhanced transport processes associated with the collisionless drift wave instabilities. The results indicate that the shear is effective in reducing the anomalous particle diffusion as predicted by theory; however, it is less so for the accompanied electron heat transfer. The quasilinear decay of the density profile is found to be the dominant mechanism for the nonlinear saturation. (auth)
Date: December 1, 1975
Creator: Lee, W. W. & Okuda, H.
Item Type: Refine your search to only Report
open access

Application of composite bearingless rotor concept to wind turbine rotor. Progress report, June 3, 1975--October 31, 1975

Description: The objective of the one year program is to explore the feasibility of the Composite Bearingless Rotor (CBR) for use as a wind turbine and to evaluate several automatic control concepts designed to improve efficiency and cost effectiveness. The program consists of the design of a full-scale wind turbine, the design and fabrication of a dynamically scaled model, wind tunnel experiments, and analytical studies. To date, the design work has been completed, the model wind turbine support tower has … more
Date: December 1, 1975
Creator: Spierings, P. A. M. & Cheney, M. C.
Item Type: Refine your search to only Report
open access

Application study of wind power technology to the city of Hart, Michigan

Description: Information is presented concerning wind data collections and analysis; Hart power demand and consumer usage; wind power assessment; hydro power assessment; results of preliminary economics analysis; environmental impact of wind turbines and operation in the Hart, Oceana County, Michigan area; and systems model for the Hart power system with wind turbine. (DCC)
Date: December 31, 1975
Creator: Asmussen, J.; Fisher, P. D.; Park, G. L. & Krauss, O.
Item Type: Refine your search to only Report
open access

ARAC system

Description: In spite of the remarkable safety record of the nuclear industry as a whole, recent public concern over the potential impact of the industry's accelerated growth has prompted ERDA to expand its emergency response procedures. The Atmospheric Release Advisory Capability, ARAC, is a computer communications system designed to enhance the existing emergency response capability of ERDA nuclear facilities. ARAC will add at least two new functions to this capability: centralized, real-time data acquisi… more
Date: December 10, 1975
Creator: Kelly, M.F. & Wyman, R.H.
Item Type: Refine your search to only Article
open access

Assessment study of devices from the generation of electricity from stored hydrogen

Description: A study was performed to evaluate alternative methods for the generation of electricity from stored hydrogen. The generation systems considered were low- temperature and high-temperature fuel cells, gas turbines and steam turbines. These systems were evaluated in terms of present-day technology and future (1995) technology. Of primary interest were the costs and efficiencies of the devices, the versatility of the devices toward various types of gaseous feeds, and the likelihood of commercial de… more
Date: December 1, 1975
Creator: Ackerman, J.P.; Barghusen, J.J. & Link, L.E.
Item Type: Refine your search to only Report
open access

Auger and Reaction Studies of Poisoning by Sulfur and Regeneration of Metal Synthesis Gas Catalysts. Progress Report: April 1, 1975--December 15, 1975

Description: The objective is to determine the rate and mechanism of (1) sulfur poisoning and (2) of regeneration of metal catalysts used in synthesis gas conversion to hydrocarbon products. Auger electron spectroscopy (AES) is used for surface analysis, and in-situ reaction studies of deactivation and regeneration are combined with microreactor studies to quantify sulfur poisoning. An all-glass internal recirculation microreactor has been designed, fabricated, debugged and integrated into a metal-free feed… more
Date: December 1975
Creator: Katzer, James R.
Item Type: Refine your search to only Report
open access

Automated multispectra alpha spectrometer and data reduction system

Description: A complete hardware and software package for the accumulation and rapid analysis of multiple alpha pulse height spectra has been developed. The system utilizes a 4096-channel analyzer capable of accepting up to sixteen inputs from solid-state surface barrier detectors via mixer-router modules. The analyzer is interfaced to a desk-top programmable calculator and thermal line printer. A chained software package including spectrum printout, peak analysis, plutonium- 238 and plutonium-239 data redu… more
Date: December 1, 1975
Creator: Hochel, R. C.
Item Type: Refine your search to only Report
open access

Basic research on ceramic materials for energy storage and conversion systems. Progress report, April 1, 1975--November 30, 1975

Description: The present research program involves utilizing appropriate probes for movement of ionic and electronic charge carriers in ceramic materials suitable for solid electrolyte and electrode applications in high-performance, secondary battery and fuel cell systems. Special emphasis is placed on developing a better understanding of the effects of structure, impurities, and composition on transport mechanisms and on developing detailed knowledge of the kinetics and mechanisms of reactions occurring (o… more
Date: December 1, 1975
Creator: Whitmore, D.H.
Item Type: Refine your search to only Report
open access

Beginning-of-life neutronic analysis of a 3000-MW(t) HTGR

Description: The results of a study of safety-related neutronic characteristics for the beginning-of-life core of a 3000-MW(t) High-Temperature Gas-Cooled Reactor are presented. Emphasis was placed on the temperature-dependent reactivity effects of fuel, moderator, control poisons, and fission products. Other neutronic characteristics studied were gross and local power distributions, neutron kinetics parameters, control rod and other material worths and worth distributions, and the reactivity worth of a sel… more
Date: December 1, 1975
Creator: Vigil, J.C.
Item Type: Refine your search to only Report
open access

BF$sub 3$ gamma tolerant neutron detector tubes

Description: This standard covers the requirements for a high gamma tolerant, BF$sub 3$ filled proportional counter (also called detector) for use in neutron detection systems requiring operation in gamma flux environments to 10$sup 3$ R/ hr. This standard applies only to the detector; however, when used with other appropriate standards or specifications, it is intended that more complete assemblies (integral detector and cable or special shielded systems) can be obtained. Required performance characteristi… more
Date: December 1, 1975
Item Type: Refine your search to only Report
open access

Bibliography of environmental research: ecosystems department, 1952--1975

Description: A bibliography of environmental research is presented which consists of items published between 1952 and mid-1975 by past and present staff members of the Ecosystems Dept., Battelle Pacific Northwest Laboratories. The material is arranged by alphabetical listing of author. Under each author, publications are listed chronologically by publication date in the categories of: journal articles, books, reports, and patents. No indexes are included. (LCL)
Date: December 1975
Creator: Vaughan, B. E. & Helbling, J. L.
Item Type: Refine your search to only Report
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