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1,484
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183
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85
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69
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62
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3
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16
Summary of All Reported Accidents in Rural Areas of Texas
14
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12
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12
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²³⁵U(n,f), ²³⁸U(n, gamma), ²³⁸U(n,f), ²³⁹Pu(n,f) Reaction Rate Measurement Calibrations at ZPPR
New reference deposits for uranium-235, plutonium-239 and uranium-238 have been established with mass uncertainties of <0.2%. These new deposits replace the older reference deposits which were used during the last 17 years and improve the uncertainty of reaction rate measurements due to reference mass uncertainties by about a factor of 6. Measurements of the fission fragment absorption in 2 pi and low-geometry count rates. Two measurements of the uranium-238 capture rate in depleted uranium samples based upon the thermal cross sections of uranium-238(n, gamma), uranium-235(n,f) and plutonium-239(n,f) and based upon the americium-243 calibration technique confirm the ZPPR measurement technique within the quoted uncertainty of +/-0.5%
Date:
January 1987
Creator:
Poenitz, W. P.; Maddison, D. W.; Gasidlo, J. M.; Carpenter, S.G. & Armani, R. J.
System:
The UNT Digital Library
Abstracts of Phase 1 awards, (fiscal year) 1987
Contained in this booklet are abstracts of the Phase I awards made in Fiscal Year 1987 under the Small Business Innovation Research (SBIR) program in the Department of Energy (DOE). The program is designed for implementation in a three-phase process, with Phase I determining the scientific or technical merit and feasibility of ideas proposed for investigation. The period of performance in this initial phase is relatively brief, typically about 6 months, and the awards are limited to $50,000. Phase II is the principal research or research and development effort, and the awards are as high as $500,000 for work to be performed in periods of up to 2 years. Phase III is the commercial application. The 111 Phase I projects described were selected in a highly competitive process from a total of 942 proposals received in response to the 1987 Solicitation. They cover the fields of chemistry, materials, control systems, plant natural products, instrumentation, nuclear medicine, health and environmental effects, high energy physics, particle accelerators, nuclear physics, plasma diagnostics and confinement, fusion energy systems, robotics and remote systems, nuclear reactors, space nuclear power, fuel cycle, decontamination/decommissioning, commputers in nuclear plants, coal, enhanced oil recovery/tar sands, fossil energy, photovoltaics, solar thermal, …
Date:
January 1, 1987
Creator:
unknown
System:
The UNT Digital Library
Activities and Operations of the Advanced Computing Research Facility : October 1986-October 1987
This paper contains a description of the work being carried out at the advanced computing research facility at Argonne National Laboratory. Topics covered are upgrading of computers, networking changes, algorithms, parallel programming, programming languages, and user training.
Date:
1987?
Creator:
Pieper, Gail W.
System:
The UNT Digital Library
AGS experiments: 1985, 1986, 1987
This report contains: Experimental areas layout, table of beam parameters and fluxes, experiment schedule ''as run,'' experiment long range schedule, a listing of experiments by number, two-page summaries of each experiment, also ordered by number, and publications of AGS experiments, 1982-1987.
Date:
January 1, 1987
Creator:
Depken, J. C.
System:
The UNT Digital Library
An Analysis of Alternative Fish Transportation Strategies: Completion Report 1986.
This report examined the potential for an expanded fish transportation program under an assumption of fully operational fish bypass facilities being present at mainstream Snake and Columbia River hydroelectric facilities. The US Army Corps of Engineers FISHPASS model was used for the analysis. Results indicated that additional transportation would be of marginal benefit to any stocks except those entering the pool immediately above the dam being considered. For this reason, Ice Harbor Dam is least attractive for addition of transport. John Day and Lower Monumental were the most attractive as preferred locations for transportation facilities. The effect of variations in turbine mortality was very small when compared to changes in reservoir mortality. For yearling chinook, halving reservoir mortality nearly doubled survival rates while doubling reservoir mortality caused a 75% decrease in survival. In contrast, doubling turbine mortality dropped survival rates by 28% and halving turbine mortality resulted in an increase of 1.17 times the base survival rate. Mortality outside the scope of the study was also considered and its effect on modeling results was discussed.
Date:
January 1, 1987
Creator:
Harper, Richard J.
System:
The UNT Digital Library
An Analysis of Changing Homeownership Rules
Report discussing changing homeownership rates and various factors that affect the housing market.
Date:
January 1987
Creator:
Harris, Jack
System:
The Portal to Texas History
Antenna organization in green photosynthetic bacteria
This project is concerned with the structure and function of the unique antenna system found in the green photosynthetic bacteria. The antenna system in these organisms is contained within a vesicle known as a chlorosome, which is attached to the cytoplasmic side of the cell membrane. Additional antenna pigments and reaction centers are contained in integral membrane proteins. Energy absorbed by the bacteriochlorophyll c (BChl c) pigments in the chlorosome is transferred via a baseplate'' array of BChl a antenna pigments into the membrane and to the reaction center. This system is similar in some respects to the phycobilisome antenna system found in cyanobacteria and some types of algae, in that a membrane-associated structure absorbs light and transfers it to the membrane where conversion to chemical energy takes place. However, the overall structure, the type of pigments utilized and the nature of the proteins in these two types of membrane-associated antenna bodies are entirely different, and they clearly represent two independent evolutionary solutions to the problem of light collection and excitation transfer.
Date:
January 1, 1987
Creator:
Blankenship, R.E.
System:
The UNT Digital Library
Antenna organization in green photosynthetic bacteria
This project is concerned with the structure and function of the unique antenna system found in the green photosynthetic bacteria. The antenna system in these organisms is contained within a vesicle known as a chlorosome, which is attached to the cytoplasmic side of the cell membrane. Additional antenna pigments and reaction centers are contained in integral membrane proteins. Energy absorbed by the bacteriochlorophyll c (BChl c) pigments in the chlorosome is transferred via a baseplate'' array of BChl a antenna pigments into the membrane and to the reaction center. A schematic model of chlorosome structure is shown. This project is aimed at increasing our understanding of the organization of the pigments in the chlorosome and how the antenna system functions.
Date:
January 1, 1987
Creator:
Blankenship, R.E.
System:
The UNT Digital Library
The Apollo program: science/engineering personnel demand created by a federal research mission
This report examines several related areas: Were the manpower resources for Apollo available when they were needed? Did Apollo succeed in creating research capabilities that outlasted the program that created them? Finally, can we change Federal research missions better, based on the Apollo experience?
Date:
January 1987
Creator:
Levine, Arnold S.
System:
The UNT Digital Library
An Appraisal of Minerals Availability for 34 Commodities
From Program Overview: "This bulletin summarizes and updates availability information published in individual mineral commodity appraisals since 1979. it also marks achievement, after 15-yr systems and data development history, of a major Bureau goal to build computer-based systems and the necessary staff infrastructure to perform timely, commodity-wide assessments with comparable cost frameworks."
Date:
1987
Creator:
United States. Bureau of Mines.
System:
The UNT Digital Library
Argonne National Laboratory, High Energy Physics Division: Semiannual Report of Research Activities, July 1, 1986-December 31, 1986
This paper discusses the research activity of the High Energy Physics Division at the Argonne National Laboratory for the period, July 1986-December 1986. Some of the topics included in this report are: high resolution spectrometers, computational physics, spin physics, string theories, lattice gauge theory, proton decay, symmetry breaking, heavy flavor production, massive lepton pair production, collider physics, field theories, proton sources, and facility development. (LSP)
Date:
January 1, 1987
Creator:
unknown
System:
The UNT Digital Library
Artificial photosynthesis using chlorophyll based carotenoid quinone triads: A brief synopsis of research progress as of 31 December 1986
The design, synthesis and study of a series of carotenoid-chlorophyll-quinone triad molecules which mimic some of the basic photochemistry and photophysics of natural photosynthesis is sought. The first members of this series have now been prepared, and have been found to mimic photosynthetic charge separation, carotenoid antenna function, and carotenoid photoprotection from singlet oxygen damage. Although the triad molecules mimic the general principle of multistep electron transfer which is found in natural photosynthesis, the details of photosynthetic electron transfer differ in the triads, in that the first electron transfer step involves electron donation from the excited state donor, followed by reduction of the resulting donor radical cation by the carotenoid. In photosynthesis, the electron is moved through several acceptors before the chlorophyll radical cation is reduced. Therefore, our recent work has concentrated on the design and synthesis of new model systems which better mimic certain aspects of natural photosynthesis.
Date:
1987~
Creator:
Gust, Devans & Moore, Thomas A.
System:
The UNT Digital Library
Biomass Thermochemical Conversion Program: 1986 annual report
Wood and crop residues constitute a vast majority of the biomass feedstocks available for conversion, and thermochemical processes are well suited for conversion of these materials. Thermochemical conversion processes can generate a variety of products such as gasoline hydrocarbon fuels, natural gas substitutes, or heat energy for electric power generation. The US Department of Energy is sponsoring research on biomass conversion technologies through its Biomass Thermochemical Conversion Program. Pacific Northwest Laboratory has been designated the Technical Field Management Office for the Biomass Thermochemical Conversion Program with overall responsibility for the Program. This report briefly describes the Thermochemical Conversion Program structure and summarizes the activities and major accomplishments during fiscal year 1986. 88 refs., 31 figs., 5 tabs.
Date:
January 1, 1987
Creator:
Schiefelbein, G. F.; Stevens, D. J. & Gerber, M. A.
System:
The UNT Digital Library
Brine migration test report: Asse Salt Mine, Federal Republic of Germany: Technical report
This report presents a summary of Brine Migration Tests which were undertaken at the Asse mine of the Federal Republic of Germany (FRG) under a bilateral US/FRG agreement. This experiment simulates a nuclear waste repository at the 800-m (2624-ft) level of the Asse salt mine in the Federal Republic of Germany. This report describes the Asse salt mine, the test equipment, and the pretest properties of the salt in the mine and in the vicinity of the test area. Also included are selected test data (for the first 28 months of operation) on the following: brine migration rates, thermomechaical behavior of the salt (including room closure, stress reading, and thermal profiles), borehole gas pressures, and borehole gas analyses. In addition to field data, laboratory analyses of pretest salt properties are included in this report. The operational phase of these experiments was completed on October 4, 1985, with the commencement of cooldown and the start of posttest activities. 7 refs., 68 figs., 48 tabs.
Date:
January 1, 1987
Creator:
Coyle, A. J.; Eckert, J. & Kalia, H.
System:
The UNT Digital Library
Bureau of Mines Development of Titanium Production Technology
From Abstract: "The development and status of technology for producing titanium from U.S. resource materials are summarized in this Bureau of Mines report."
Date:
1987
Creator:
Henry, J. L.; Stephens, W. W.; Blue, D. D. & Maysilles, J. H.
System:
The UNT Digital Library
Case histories of West Valley spent fuel shipments: Final report
In 1983, NRC/FC initiated a study on institutional issues related to spent fuel shipments originating at the former spent fuel processing facility in West Valley, New York. FC staff viewed the shipment campaigns as a one-time opportunity to document the institutional issues that may arise with a substantial increase in spent fuel shipping activity. NRC subsequently contracted with the Aerospace Corporation for the West Valley Study. This report contains a detailed description of the events which took place prior to and during the spent fuel shipments. The report also contains a discussion of the shipment issues that arose, and presents general findings. Most of the institutional issues discussed in the report do not fall under NRC's transportation authority. The case histories provide a reference to agencies and other institutions that may be involved in future spent fuel shipping campaigns. 130 refs., 7 figs., 19 tabs.
Date:
January 1, 1987
Creator:
unknown
System:
The UNT Digital Library
Centrifugal slurry pump wear and hydraulic studies. Quarterly technical progress report, January 1, 1987--March 31, 1987
The following report marks the third quarter of the third phase of the centrifugal slurry pump improvement program. The program was begun in 1982 for the purpose of improving the operating life of centrifugal slurry pumps for coal liquefaction service. This phase of work will verify the design of a pump at higher speed operation. Eventual scale-up of the prototype slurry pumps to full-scale synthetic fuel generation plants could require ten times the flow. The higher speed will allow pumps to be smaller with respectable efficiencies. Conversely, without increasing the specific speed of the pump design, the eventual size would be more than triple that of the prototype slurry pump. The prototype slurry pump during this phase of the program incorporated all the features proven in the earlier phases of the program. This new, higher specific speed pump will be tested for the ability of the hydraulic design to inhibit wear. It will be tested and compared to the previous optimum prototype slurry pump of this program.
Date:
January 1, 1987
Creator:
Bonney, G. E.
System:
The UNT Digital Library
Ceramic decomposition under irradiation, 1987
Our quantitative determinations of the decomposition of thin film and bulk ceramic materials during electron microscopy has shown that the radiation damage effect is a complex one depending dielectric and thermochemical properties. In low melting temperature glasses, for example, much of the activity is due to field enhanced diffusion of low atomic weight species. This is particularly true of bulk specimens and for the case of binary soda-borosilicate glass the sodium depletion in the SEM can be quantitatively described in terms of this effect. Studies with thin specimens of refractory carbides show that in these materials the carbon depletion is due to direct displacement processes and that here the electric fields give rise to recombination effects. The studies of ceramic thin films suitable for reference standards is continuing as a joint effort with the Rockwell Science Center. Work is in progress to describe the in plane crystallization that is observed in terms of the latent heat involved and the configurational entropy of the propagating interface.
Date:
January 1, 1987
Creator:
Howitt, D. G.
System:
The UNT Digital Library
Chapter 2: Threshold for Raman conversion of FEL laser pulses in the atmosphere: Final report
Transmission of a high intensity laser beam through the atmosphere can be affected by a variety of stimulated and parametric nonlinear processes. As a result, gain at other wavelengths will be generated along the propagation path of the beam. But the conversion of the original laser energy into other wavelengths is not the only result. Unless special measures are taken, the wavefront of the Raman shifted radiation will be determined by the turbulence in the atmosphere and by the aspect ratio of the gain medium. These processes will lead to beam divergences which can be significantly greater than the diffraction limit. As a result of these nonlinear processes, it will not be possible to efficiently propagate the beam unless proper measures are taken. Developing a quantitative model is especially important for determining the propagation characteristics of FEL laser pulses through the atmosphere. The objective of this research report is to present such a time dependent model for stimulated Raman conversion of short laser pulse propagating in the atmosphere and to calculate the threshold laser pulse energy and intensity for stimulated rotational Raman scattering as a function of wavelength, pulse width and beam diameter. 12 refs., 10 figs.
Date:
January 1, 1987
Creator:
Ori, A. & Rokni, M.
System:
The UNT Digital Library
Chemical behaviour of geothermal silica after precipitation from geothermal fluids with inorganic flocculating agents at the Hawaii Geothermal Project Well-A (HGP-A)
The report summarizes the results of experiments dealing with the problem of removal of waste-silica from spent fluids at the experimental power generating facility in the Puna District of the island of Hawaii. Geothermal discharges from HGP-A represent a mixture of meteoric and seawaters which has reacted at depth with basalts from the Kilauea East Rift Zone under high pressure and temperature. After separation of the steam phase of the geothermal fluid from the liquid phase and a final flashing stage to 100 degrees Celsius and atmospheric pressure, the concentration of the silica increases to approximately 1100 mg/L. This concentration represents five to six times the solubility of amorphous silica in this temperature range. We have evaluated and successfully developed bench scale techniques utilizing adsorptive bubble flotation for the removal of colloidal silica from the spent brine discharge in the temperature range of 60 to 90 degrees C. The methods employed resulted in recovery of up to 90% of the silica present above its amorphous solubility in the experimental temperature range studied.
Date:
January 1, 1987
Creator:
De Carlo, E.H.
System:
The UNT Digital Library
Color magnetism in pion photoproduction and radiative delta decay
We use the extant multipole data base to extract the ..gamma..N-..delta.. transition amplitudes, using the phenomenology of the effective Lagrangian approach. We find evidence for hadronic color magnetism in the radiative delta decay amplitudes. 24 refs., 2 tabs.
Date:
January 1, 1987
Creator:
Mukhopadhyay, N. C. & Davidson, R.
System:
The UNT Digital Library
Compilation of requests for nuclear data
This request list summarizes the current needs of the US nuclear energy programs and other applied technologies for experimentally measured nuclear data. The request list is ordered by target nucleus (isotope) and then reaction type (quantity). An attempt has been made to describe the quantity in standard notation. An appendix contains a glossary of the symbols used with a short explanatory text. Because of the changing and continuing character of the need for data request information, as well as the probability that current measurements may satisfy a portion of the request, this report is to be regarded as a working document. In fact, it is maintained as a data base by the National Nuclear Data Center. Procedures for submitting data request, priority assignments, and the DOE/NDC Committee membership are included.
Date:
January 1, 1987
Creator:
Rose, P.F. & Daly, A. (eds.)
System:
The UNT Digital Library
Comprehensive Guide for Least-Cost Energy Decisions
From p.1 : The purpose of this book is to assist builders, building designers, owners, and operators to find a balance between energy consumption and energy conservation which will result in more cost-effective buildings.
Date:
January 1987
Creator:
Ruegg, Rosalie T. & Petersen, Stephen R.
System:
The UNT Digital Library
Computer codes used in particle accelerator design: First edition
This paper contains a listing of more than 150 programs that have been used in the design and analysis of accelerators. Given on each citation are person to contact, classification of the computer code, publications describing the code, computer and language runned on, and a short description of the code. Codes are indexed by subject, person to contact, and code acronym. (LEW)
Date:
January 1, 1987
Creator:
unknown
System:
The UNT Digital Library