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Office of Scientific & Technical Information Technical Reports
2,159
Texas State Publications
320
Technical Report Archive and Image Library
263
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139
Texas Register
84
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53
Office of Technology Assessment
46
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9
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8
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151
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143
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84
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40
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39
Savannah River Laboratory Hydrogeochemical and Stream Sediment Reconnaissance
34
Texas Motor Vehicle Traffic Accident Summaries
33
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29
NURE Aerial Gamma Ray and Magnetic Reconnaissance Survey of Maine and Portions of New York
23
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17
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Some Scoping Experiments for a Space Reactor
Some scoping experiments were performed to evaluate fuel performance in a lithium heat pipe reactor operating at a nominal 1500K heat pipe temperature. Fuel-coolant and fuel-coolant-clad relationships showed that once a failed heat pipe occurs temperatures can rise high enough so that large concentrations of uranium can be transported by the vapor phase. Upon condensation this uranium would be capable of penetrating heat pipes adjacent to the failed pipe. The potential for propagation of failure exists with UO/sub 2/ and a lithium heat pipe. Changing the composition of the metal of the heat pipe would have only a second order effect on the kinetics of the failure mechanism. Uranium carbide and nitride were considered as potential fuels which are nonreactive in a lithium environment. At high temperatures the nitride would be favored because of its better compatibility with potential cladding materials. Compositions of UN with small additions of YN appear to offer very attractive properties for a compact high temperature high power density reactor.
Date:
July 7, 1983
Creator:
Alexander, C. A. & Ogden, J. S.
Object Type:
Report
System:
The UNT Digital Library
CP violation in the six-quark model
Some of the recent work on CP violation in the six-quark model is reviewed.
Date:
July 1, 1980
Creator:
Wise, M.B.
Object Type:
Article
System:
The UNT Digital Library
Direct observations of the primary state of radiation damage of ion-irradiated tungsten and platinum
A brief summary was presented of all the Cornell work on the primary state of radiation damage in ion-irradiated tungsten and platinum. The primary research tool for all this research was the field-ion microscope (FIM); the FIM was ideally suited for this research because of its excellent atomic resolution and the ability to examine the interior of the specimens, as a result of the field-evaporation effect. This paper summarized, in outline form, the following items: (1) the principal experimental quantities determined from the analyses performed on all the individual depleted zones (DZs) observed; (2) the main experimental programs; (3) a number of the more important results and conclusions concerning the vacancy structure of DZs; and (4) the three-dimensional spatial distribution of self-interstitial atoms around DZs in tungsten which had been irradiated and examined in situ at 10/sup 0/K.
Date:
July 1, 1980
Creator:
Seidman, D. N.; Current, M. I.; Pramanik, D. & Wei, C. Y.
Object Type:
Article
System:
The UNT Digital Library
Hydrogeochemical and Stream Sediment Reconnaissance Basic Data for Grand Island NTMS Quadrangle, Nebraska; Kansas: Appendix C
Data collected as part of a hydrogeochemical and stream sediment reconnaissance of Grand Island NTMS quadrangle in Kansas and Nebraska including laboratory data on well water and stream sediments as well as field data.
Date:
July 31, 1980
Creator:
National Uranium Resource Evaluation Program
Object Type:
Dataset
System:
The UNT Digital Library
Renewable Resources: a national catalog of model projects. Volume 1. Northeast Solar Energy Center Region
This compilation of diverse conservation and renewable energy projects across the United States was prepared through the enthusiastic participation of solar and alternate energy groups from every state and region. Compiled and edited by the Center for Renewable Resources, these projects reflect many levels of innovation and technical expertise. In many cases, a critique analysis is presented of how projects performed and of the institutional conditions associated with their success or failure. Some 2000 projects are included in this compilation; most have worked, some have not. Information about all is presented to aid learning from these experiences. The four volumes in this set are arranged in state sections by geographic region, coinciding with the four Regional Solar Energy Centers. The table of contents is organized by project category so that maximum cross-referencing may be obtained. This volume includes information on the Northeast Solar Energy Center Region. (WHK).
Date:
July 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Excited-state proton-transfer kinetics in 1-naphthol, 1-naphthol-sulfonates, and organometallic complexes
The dissociation of 1-naphthol in aqueous solution occurs so rapidly that the fluorescence from the neutral form, ROH, has been previously described as completely extinguished or hardly noticeable. Apparently nearly all of the fluorescence originates from the naphtholate ion. This paper reports on the proton-transfer characteristics of a series of 1-naphthol compounds, and also reports preliminary data on excited-state proton transfer in an organometallic complex of ruthenium.
Date:
July 1, 1980
Creator:
Shapiro, S. L.; Winn, K. R. & Clark, J. H.
Object Type:
Article
System:
The UNT Digital Library
Site locality identification study: Hanford Site. Volume II. Data cataloging
Data compilation and cataloging for the candidate site locality identification study were conducted in order to provide a retrievable data cataloging system for the present siting study and future site evaluation and licensng processes. This task occurred concurrently with and also independently of other tasks of the candidate site locality identification study. Work in this task provided the data utilized primarily in the development and application of screening and ranking processes to identify candidate site localities on the Hanford Site. The overall approach included two steps: (1) data acquisition and screening; and (2) data compilation and cataloging. Data acquisition and screening formed the basis for preliminary review of data sources with respect to their probable utilization in the candidate site locality identification study and review with respect to the level of completeness and detail of the data. The important working assumption was that the data to be used in the study be based on existing and available published and unpublished literature. The data compilation and cataloging provided the basic product of the Task; a retrievable data cataloging system in the form of an annotated reference list and key word index and an index of compiled data. The annotated reference list …
Date:
July 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Solar energy system demonstration project at Wilmington Swim School, New Castle, Delaware. Final report
This document is the Final Report of the Solar Energy System located at the Wilmington, Swim School, New Castle, Delaware. This active solar system is composed of 2,700 square feet of Revere liquid flat plate collectors piped to a 2,800 gallon concrete storage tank located below ground near the building. A micro-computer based control system selects the optimal applications of the stored energy among space, domestic water and pool alternatives. The controlled logic is planned for serving the heat loads in the following order: space heat-new addition, domestic water-entire facility, and pool heating-entire facility. A modified trombe wall passive operation the active system will bypass the areas being served passively. The system was designed for a 40 percent heating and a 30 percent hot water solar contribution.
Date:
July 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Radiation standards and calibrations. FY-1981 annual report
The research program encompasses: reviewing calibration standards, regulations, and handbooks; assuring that calibration procedures used are in agreement with technically accepted methods; maintaining basic radioactive sources and instruments that serve as radiological standards; and providing traceability to the National Bureau of Standards where possible. In addition, major efforts are being expended to upgrade the 318 calibration facility. This report focuses on major accomplishments during FY-1981. However, most maintenance and quality assurance efforts involve routine support and only a summary report is provided. (PSB)
Date:
July 1, 1982
Creator:
Roberson, P. L.; Yoder, R. C.; Fox, R. A.; Hooker, C. D.; Hogan, R. T.; Holbrook, K. L. et al.
Object Type:
Report
System:
The UNT Digital Library
Drilling fluid/formation interaction at simulated in situ geothermal conditions. Final report
Interaction of drilling fluids with a geothermal reservoir formation can result in significant permeability impairment and therefore reduced well productivity. This interaction is studied under simulated in situ geothermal conditions of overburden stress, pore fluid pressure, temperature, and pore fluid chemistry. Permeability impairment of an East Mesa KGRA reservoir material is evaluated as a function of stagnation time, drilling fluid, and temperature. Results indicate that all of these parameters contribute significantly to the magnitude and the reversibility of the impairment.
Date:
July 1, 1980
Creator:
Enniss, D. O.; Bergosh, J. L.; Butters, S. W. & Jones, A. H.
Object Type:
Report
System:
The UNT Digital Library
Future engineering needs of mirror fusion reactors
Fusion research has matured during the last decade and significant insight into the future program needs has emerged. While some will properly note that the crystal ball is cloudy, it is equally important to note that the shape and outline of our course is discernable. In this short summary paper, I will draw upon the National Mirror Program Plan for mirror projects and on available design studies of these projects to put the specific needs of the mirror program in perspective.
Date:
July 30, 1982
Creator:
Thomassen, K.I.
Object Type:
Article
System:
The UNT Digital Library
Stock Assessment of Columbia River Anadromous Salmonids: Final Report, Volume 1. Chinook, Coho, Chum and Sockeye Salmon Summaries.
The purpose was to identify and characterize the wild and hatchery stocks of salmon and steelhead in the Columbia River Basin on the basis of currently available information. This report provides a comprehensive compilation of data on the status and life histories of Columbia Basin salmonid stocks.
Date:
July 1, 1986
Creator:
Howell, Philip J.
Object Type:
Report
System:
The UNT Digital Library
Boundary element analysis of time-dependent inelastic deformation of cracked plates loaded in anti-plane shear
A boundary element analysis, for determining stresses in planar cracked bodies undergoing Mode I or Mode II inelastic deformation, has been recently published by the present authors. One primary advantage of this formulation is that the effect of the crack is incorporated in the kernels of the integral equations. Thus, traction free conditions on the crack boundary are satisfied without discretization of this boundary in a numerical calculation procedure. The inelastic deformation of cracked plates loaded in anti-plane shear (Mode III) is studied in this paper. Modified kernels are used so that the only unknowns in the integral equations are source strengths on the outer boundary of the plate. It is proved that this formulation guarantees traction free cracks as well as single valued displacements on the crack boundary. Numerical results for stresses are presented for various loading histories with the plate material described by an elastic-nonlinear power law creep constitutive model and a stationary crack modelled as a very thin ellipse.
Date:
July 1, 1980
Creator:
Mukherjee, S. & Morjaria, M.
Object Type:
Report
System:
The UNT Digital Library
Experiment in multiple-criteria energy policy analysis. [Using HOPE (holistic preference evaluation)]
An international panel of energy analysts participated in an experiment to use HOPE (holistic preference evaluation): an interactive parametric linear-programming method for multiple-criteria optimization. The criteria of cost, environmental effect, crude oil, and nuclear fuel were considered according to BESOM: an energy model for the US in the year 2000.
Date:
July 1, 1980
Creator:
Ho, J K
Object Type:
Article
System:
The UNT Digital Library
Fundamental Studies of Erosion for Coal Gasification Systems. Annual Progress Report, 1 November 1979-30 June 1980
The effort in this program is divided between modelling the particle impact event using numerical methods and computer calculations and actual measurement of erosion rates. While the results obtained from each of these activities must be combined to provide an improved understanding of particulate erosion of ductile materials, it is convenient to describe separately the progress in each activity area. The first step in the application of the finite element method to any problem is the dissolution of the continuum into small elements. The intent of this procedure is to use as few total elements as possible and to make the elements small where gradients are large and vice versa. The exact solution for the contact of a rigid cylinder with an elastic surface is available from Hertz. This solution has been compared with the computer results obtained from finite element maps containing 148, 273, and 474 elements. The correlation between the computer results and elastic solution is not good for the map with the fewest elements, but improves as the number of elements increases. Convergence to this exact solution has been examined as a function of the number of map elements as a means of improving the efficiency of …
Date:
July 27, 1980
Creator:
Follansbee, P. S.; Sinclair, G. B. & Williams, J. C.
Object Type:
Report
System:
The UNT Digital Library
Solar photovoltaic applications seminar: design, installation and operation of small, stand-alone photovoltaic power systems
This seminar material was developed primarily to provide solar photovoltaic (PV) applied engineering technology to the Federal community. An introduction to photoconductivity, semiconductors, and solar photovoltaic cells is included along with a demonstration of specific applications and application identification. The seminar details general systems design and incorporates most known information from industry, academia, and Government concerning small solar cell power system design engineering, presented in a practical and applied manner. Solar PV power system applications involve classical direct electrical energy conversion and electric power system analysis and synthesis. Presentations and examples involve a variety of disciplines including structural analysis, electric power and load analysis, reliability, sizing and optimization; and, installation, operation and maintenance. Four specific system designs are demonstrated: water pumping, domestic uses, navigational and aircraft aids, and telecommunications. All of the applications discussed are for small power requirement (under 2 kilowatts), stand-alone systems to be used in remote locations. Also presented are practical lessons gained from currently installed and operating systems, problems at sites and their resolution, a logical progression through each major phase of system acquisition, as well as thorough design reviews for each application.
Date:
July 1, 1980
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
N and. delta. resonances: an experimental review
Experimental progress in N and ..delta.. resonances since the Oxford baryon conference is reviewed. The review concentrates on hadronic channels, and on developments of the last one or two years. The topics reviewed include the antiproton lifetime; the ..delta../sup + +/ magnetic moment; measurements of ..pi..N elastic and charge-exchange scattering in the ..delta.. region, the eta n threshold region, and the high-mass region; partial wave analyses of ..pi..N ..-->.. ..pi..N; measurements of two-body inelastic ..pi..N scattering; and isobar analyses of ..pi..N ..-->.. ..pi pi..N. 75 references, 3 figures, 4 tables.
Date:
July 1, 1980
Creator:
Kelly, R.L.
Object Type:
Article
System:
The UNT Digital Library
Steady-state and transient radionuclide transport through penetrations in nuclear waste containers
The transport of radionuclides through penetrations in wastes containers is analyzed. Penetrations may result from corrosion or cracks and may occur in the original container material, in degraded or corroded material, or in deposits of corrosion products. In this report we do not consider how these penetrations occur or the characteristics of expected penetrations in waste containers. We are concerned here only with the analytical formulation and solutions of equations to predict rates of mass transfer through penetrations of specified size and geometry. Expressions for the diffusive mass transfer rates through apertures are presented in Chapter 2, and numerical illustrations are presented in Chapter 3. The calculations show that mass transfer through small penetrations in thin-wall containers can be great enough that the penetrated container is no longer an effective barrier for radionuclide release. Use of this theory to calculate mass transfer through thick-wall containers is the subject of a later report. 3 refs., 9 figs.
Date:
July 1, 1986
Creator:
Chambre, P. L.; Lee, W. W. L.; Kim, C. L. & Pigford, T. H.
Object Type:
Report
System:
The UNT Digital Library
Bounce-averaged Fokker-Planck code for stellarator transport
A computer code for solving the bounce-averaged Fokker-Planck equation appropriate to stellarator transport has been developed, and its first applications made. The code is much faster than the bounce-averaged Monte-Carlo codes, which up to now have provided the most efficient numerical means for studying stellarator transport. Moreover, because the connection to analytic kinetic theory of the Fokker-Planck approach is more direct than for the Monte-Carlo approach, a comparison of theory and numerical experiment is now possible at a considerably more detailed level than previously.
Date:
July 1, 1985
Creator:
Mynick, H.E. & Hitchon, W.N.G.
Object Type:
Report
System:
The UNT Digital Library
Analysis of sawtooth relaxation oscillations in tokamaks
Sawtooth relaxation oscillations are analyzed using the Kadomtsev's disruption model and a thermal relaxation model. The sawtooth period is found to be very sensitive to the thermal conduction loss. Qualitative agreement between these calculations and the sawtooth period observed in several tokamaks is demonstrated.
Date:
July 1, 1982
Creator:
Yamazaki, K.; McGuire, K. & Okabayashi, M.
Object Type:
Report
System:
The UNT Digital Library
Hyper filter-fluorescer spectrometer for x rays above 120 keV
An apparatus utilizing filter-fluorescer combinations is provided to measure short bursts of high fluence x-rays above 120 keV energy, where there are no practical absorption edges available for conventional filter-fluorescer techniques. The absorption edge of the prefilter is chosen to be less than that of the fluorescer, i.e., E/sub PRF/ < E/sub F/, contrary to the prior art technique E/sub PRF/ > E/sub F/. In this way, the response function is virtually zero between E/sub PRF/ and E/sub F/ and well defined and enhanced in an energy band of less than 1000 keV above the 120 keV energy.
Date:
July 7, 1981
Creator:
Wang, C. L.
Object Type:
Patent
System:
The UNT Digital Library
Synchrotron x-ray study of physisorbed films of mixtures of Ar and Xe on graphite
Mixtures of Ar and Xe have been studied in most of the submonolayer region of the phase diagram (T,chi,rho), T = temperature, chi = chemical composition, rho = fraction of a monolayer. The basic feature is a large tendency to form ..sqrt.. 3 x ..sqrt.. 3 commensurate alloys (Kr-like structures), but none of the commensurate nor of the incommensurate structures form a chemically ordered alloy at 11 K. Thus the 2D solid can be thought of as a solid consisting of particles of an average size. This allows the study of commensurate-incommensurate phase transition driven by average particle size. The transition is indeed a sharp first order transition taking place through coexisting phases (tau/sub A/ = 1.64 A/sup -1/ and tau/sub B/ = 1.703 A/sup -1/), as was the case for the low temperature pure Kr-system. Another interesting feature is the existence of well correlated liquid-like structures which preserve their correlation over a temperature range of 5 Kelvin or more. This unusual behavior is for chemical compositions where there is coexistence of a commensurate and an incommensurate solid at high temperature.
Date:
July 1, 1982
Creator:
Bohr, J.; Nielsen, M.; McTague, J. P.; Als-Nielsen, J. & Kjaer, K.
Object Type:
Article
System:
The UNT Digital Library
Structural study of multilayered vanadium/nickel superlattices
We have studied the microstructure of V/Ni metallic superlattice, using x-ray and neutron diffraction. We find a sharp and broad rocking curves around the first-order Bragg peak, and attribute them to a columnar structure which gives rise to two modulation structures; one the ordinary layered structure within the columns and the other the averaged modulation structure which produces the sharp rocking peak.
Date:
July 1, 1985
Creator:
Homma, H.; Lepetre, Y.; Murduck, J.M.; Schuller, I.K. & Majkrzak, C.F.
Object Type:
Article
System:
The UNT Digital Library
Open cycle OTEC system with falling jet evaporator and condenser
A configuration for the open cycle (OC) Ocean Thermal Energy Conversion (OTEC) system is presented incorporating a countercurrent falling jet evaporator and a concurrent falling jet condenser. The parameters governing performance of the proposed configuration are discussed and the sizing of equipment for a 100-MWe net power output OC OTEC plant is performed, based on recent experimental falling jet heat and mass transfer results. The performance of an OC OTEC plant with falling jet evaporator-condenser is compared with the Westinghouse conceptual design that uses an open-channel evaporator and a surface condenser. Preliminary calculations indicate that falling jet heat and mass transfer, when applied in the proposed configuration, leads to a very simple and compact plant assembly resulting in substantial capital cost savings.
Date:
July 1, 1980
Creator:
Kogan, A.; Johnson, D. H.; Green, H. J. & Olson, D. A.
Object Type:
Article
System:
The UNT Digital Library