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3,130 Matching Results
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Laser fusion study. Final report
The following appendices are included: (1) sensor performance calculation techniques, (2) focus sensing, (3) purchased item data, (4) pointing and focusing configuration tradeoff studies, (5) false start centering sensor, (6) RCA application notes on quad delection, (7) elliptical flex pivot analysis, (8) servo mirrors cross coupling, (9) optical misalignment analysis, (10) stress induced birefrigent quarter-wave retarder, (11) data bulletin on incramute damping alloy, (12) the utilization of stepping motors, and (13) computer program listing for stepper motor load simulation. (MOW)
Date:
June 1, 1975
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mathematical Modeling of Donnan Dialysis, a Continuous Ion Exchange Membrane Process. Final Report
None
Date:
June 13, 1975
Creator:
Melsheimer, S. S.
Object Type:
Report
System:
The UNT Digital Library
Corrosion and scaling by steam in nuclear geothermal power plants
None
Date:
June 2, 1972
Creator:
Krikorian, O.H.
Object Type:
Report
System:
The UNT Digital Library
Argonne Code Center: benchmark problem book
This report is a supplement to the original report, published in 1968, as revised. The Benchmark Problem Book is intended to serve as a source book of solutions to mathematically well-defined problems for which either analytical or very accurate approximate solutions are known. This supplement contains problems in eight new areas: two-dimensional (R-z) reactor model; multidimensional (Hex-z) HTGR model; PWR thermal hydraulics--flow between two channels with different heat fluxes; multidimensional (x-y-z) LWR model; neutron transport in a cylindrical ''black'' rod; neutron transport in a BWR rod bundle; multidimensional (x-y-z) BWR model; and neutronic depletion benchmark problems. This supplement contains only the additional pages and those requiring modification. (RWR)
Date:
June 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Metal-insulator-semiconductor photovoltaic devices
The overall objective of this program is to conduct research on metal-insulator-semiconductor (MIS) solar cells to improve understanding of the basic parameters which control photovoltaic processes in these cell structures. Current work includes fabrication, characterization, and theoretical studies of single crystal silicon-based cells, with Si0/sub x/ as the insulating film and Al or Au as the front metal contact. Studies of these two systems are intended to provide needed reference systems from which improved single crystal or polycrystalline devices can be systematically developed. The approach to cell fabrication involves growth of a Si0/sub x/ layer on a silicon substrate, and subsequent evaporation of a metal layer for the front contact by vacuum evaporation or electron beam deposition. Characterization of cells involves both physical and electro-optical measurements. Scanning Auger electron spectroscopy (AES) and secondary ion mass spectroscopy (SIMS) are utilized to determine depth concentration profiles and the nature of bonding in the interfacial region. Electron-optical measurements include current-voltage, capacitance-voltage, and spectral photoresponse measurements with the completed cell. In addition, ellipsometric measurements are utilized to determine oxide film thickness and the optical parameters for metal films on silicon. These results are compared to parameters determined from reflection and transmission measurements made on …
Date:
June 1, 1979
Creator:
Olsen, L. C.; Garnier, J. E. & Turcotte, R. P.
Object Type:
Report
System:
The UNT Digital Library
Present status of the polymeric-materials screening program for the LLL geothermal project
None
Date:
June 12, 1975
Creator:
Lorensen, L.E.; Walkup, C.M. & Mones, E.T.
Object Type:
Report
System:
The UNT Digital Library
Durability testing at one atmosphere of advanced catalysts and catalyst supports for automotive gas turbine engine combustors. Part 1
Studies were conducted to experimentally demonstrate the durability catalysts and catalyst supports in a combustion environment. A test of 1000 hours duration was completed with two catalysts, using No. 2 diesel fuel and operating at catalytically supported thermal combustion conditions. This atmospheric pressure durability test was conducted, using an air preheat temperature of about 640/sup 0/K and a reference velocity of about 14 meters/second. The adiabatic flame temperature of the fuel/air mixture was 1527/sup 0/K. The performance of the catalysts was determined by monitoring emissions throughout the test, and by examining the physical condition of the catalyst core at the conclusion of the test. Tests were performed periodically to determine changes in catalytic activity of the catalyst core. Detailed parametric studies were also run at the beginning and end of the durability test, using propane as a fuel. The test catalysts proved to be capable of low emissions operation after 1000 hours diesel aging, with no apparent physical degradation of the catalyst support. Typical emissions during the 1000 hours of testing were: unburned hydrocarbons (C/sub 3/ vppM), 4; carbon monoxide (vppM), 50; nitrogen oxides (vppM), 4.
Date:
June 1, 1977
Creator:
Heck, R.M.; Chang, M.; Hess, H. & Carrubba, R.
Object Type:
Report
System:
The UNT Digital Library
Biological production of organic solvents from cellulosic wastes. Progress report, September 15, 1976--September 14, 1977
The objectives of this project are to optimize a modular process to convert cellulosic wastes to butanol and other oil-sparing chemicals. Research to date has focused on developing analytical methods, establishing a good data base and improving cellulase yields. Reliable assay methods for the Thermoactinomyces cellulase complex have been developed, measuring glucose and reducing sugar from filter paper and Avicel for total cellulase activity, viscosity change with carboxymethyl cellulose for the endoglucanase activity, and fluorescence change with methylumbelliferyl-..beta..-D-glucopyranoside for ..beta..-glucosidase activity. Isoelectric focusing within the range pH 3.5 to 6.0 has proved to be a quick and useful means of determining effective cellulase complex composition. About 10 different proteins are present in the fermentation broth. Detailed procedures for uv and near uv plus 8-methoxy-psoralen mutagenesis have been developed, and four mutants having 50% greater activity than the parent YX strain have been isolated. Cellulase production by Thermoactinomyces is growth related and is maximum when growth stops at 12 to 16 hours with 1 to 5% Avicel at pH 7.0 to 7.2 and 55/sup 0/C. A multistage fermenter has been assembled for optimization of butanol versus acetone production by Cl. acetobutylicum. A preliminary economic assessment, currently indicating butanol at just above …
Date:
June 1, 1977
Creator:
Pye, E.K.; Humphrey, A.E. & Forro, J.R.
Object Type:
Report
System:
The UNT Digital Library
Assessment of geothermal energy resources
None
Date:
June 26, 1972
Creator:
Peck, D.L.
Object Type:
Report
System:
The UNT Digital Library
Laser Program annual report, 1976
Separate abstracts were prepared for each of the 8 included sections. (MOW)
Date:
June 1, 1977
Creator:
Coyle, P.E. (ed.)
Object Type:
Report
System:
The UNT Digital Library
CSU solar house I solar collector
None
Date:
June 30, 1975
Creator:
Ward, D.S.
Object Type:
Article
System:
The UNT Digital Library
Liquid metal plasma valve development
A program for the development of liquid-metal plasma valves (LMPVs) is discussed in detail. The program consisted of two tasks. The first was the development and testing of valves in the laboratory and the fabrication, instrumentation, testing and in-service operation of two valves at the Bonneville Power Administration (BPA) facilities of the Pacific Intertie HVDC Power Tansmission System at Celilo, Oregon. The second task was the design, development, fabrication, installation, and operation of a voltage and current monitoring station and the transient event recording system to go with it. Information is present on the design and development of converter valves; LMPV principles; and the testing of prototype valves. (LCL)
Date:
June 1, 1978
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
WIPP conceptual design report. Addendum H. Special equipment development program for Waste Isolation Pilot Plant (WIPP)
This addendum outlines the planned development program for equipment, identified and conceptually shown in the Waste Isolation Pilot Plant (WIPP) Conceptual Design Report (CDR), that is required for storage emplacement and retrieval of all wastes accepted at the WIPP.
Date:
June 1, 1977
Creator:
Stinebaugh, R.
Object Type:
Report
System:
The UNT Digital Library
Williams Holding Lease, Steamflood Demonstration Project, Cat Canyon Oil Field. Topical report I. Project design and development
The design and operation of a pilot steam-flooding process in the Williams Holding are described. Progress is reported in sections on design criteria, location selection, computer simulation, distillation effects, operational considerations, well design, facilities design, and environmental considerations. (JRD)
Date:
June 1, 1977
Creator:
Hanzlik, E.J.; Herrera, J.Q. & Smith, K.D. (eds.)
Object Type:
Report
System:
The UNT Digital Library
Analysis of costs and benefits for eight powerplant productivity improvement projects. Project 1, Task 3. Final report
In 1976, DOE (FEA) sponsored the development of a systematic methodology for the identification and analysis of candidate projects which a utility might undertake to improve baseload unit reliability. This methodology also enabled the user to estimate a project's effect on the future performance of the unit. A project was sponsored in Illinois to demonstrate the methodology and to encourage increased power plant productivity in the state. A total of 8 improvement projects were conducted and analyzed at Illinois Power Company Wood River 5 and Commonwealth Edison Company Quad Cities 1 and 2 units. A general description of the approach followed in estimating costs and benefits and in presenting the results for the 8 projects is provided. A brief technical description of the projects and their total cost, total benefits, net present value, and benefit-to-cost ratio is given. Detailed cost and benefit summaries for each project are presented followed by a discussion of the results.
Date:
June 8, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Management of social and economic impacts associated with the construction of large-scale projects: experiences from the Western coal development communities
The construction and operation of large-scale energy or resource development projects are accompanied by environmental, social, and economic changes or impacts. Impact assessment is the key tool used to determine which impact areas will most severely affect the community and will thus need to be managed. Impact management, only recently recognized as part of the assessment process, includes public and private actions to ameliorate impacts. The use of available impact management strategies can affect the outcome or change in the social and economic environment in a community. Therefore, an inventory of available strategies and the capabilities of local governments to use such strategies should be an integral part of any social and economic impact assessment. This provides a link between impact assessment and management. This report provides an introductory analysis to some of the more complex issues raised by social and economic impact management, with experiences cited from Western coal-development communities. Following an introduction, the paper is divided into sections corresponding to the major social and economic impacts experienced by rural communities surrounding an energy development. Each section contains a brief introductory description of the types of problems typically associated with the impact sector, and a discussion of management strategies …
Date:
June 1, 1977
Creator:
Greene, M.R. & Curry, M.G.
Object Type:
Report
System:
The UNT Digital Library
Solar production of industrial process steam for the Lone Star Brewery. Final report
This report outlines the detailed design and system analysis of a solar industrial process steam system for the Lone Star Brewery. The industrial plant has an average natural gas usage of 12.7 MMcf per month. The majority of this energy goes to producing process steam of 125 psi and 353/sup 0/F at about 50,000 lb/h, with this load dropping to about 6000 lb/h on the weekends. The maximum steam production of the solar energy system is about 1700 lb/h. The climatic conditions at the industrial site give 50% of the possible amount of sunshine during the winter months and more than 70% during the summer months. The long-term yearly average daily total radiation on a horizontal surface is 1574 Btu/day-ft/sup 2/, the long-term yearly average daytime ambient temperature is 72/sup 0/F, and the percentage of clear day insolation received on the average day of the year is 62%. The solar steam system will consist of 9450 ft/sup 2/ of Solar Kinetics T-700 collectors arranged in fifteen 90-ft long rows through which 67.5 gpm of Therminol T-55 is pumped. This hot Therminol then transfers the heat collected to a Patterson-Kelley Series 380 unfired steam boiler. The solar-produced steam is then metered …
Date:
June 29, 1979
Creator:
Deffenbaugh, D. M.; Watkins, P. V.; Hugg, S. B.; Kulesz, J. J.; Decker, H. E. & Powell, R. C.
Object Type:
Report
System:
The UNT Digital Library
Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report. Appendix B: trade-off studies. Volume I
Trade-off studies of Near Term Hybrid Vehicle (NTHV) design elements were performed to identify the most promising design concept in terms of achievable petroleum savings. The activities in these studies are described. The results are presented as preliminary NTHV body design, expected fuel consumption as a function of vehicle speed, engine requirements, battery requirements, and vehicle reliability and cost. (LCL)
Date:
June 11, 1979
Creator:
Traversi, M. & Piccolo, R.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of selected drive components for a flywheel powered commuter vehicle. Phase I. Final report
The results of tests performed to evaluate the performance of selected high-speed flywheel bearings and shaft seals are reported, and work performed on the development of a high-speed composite flywheel rotor is described. The overall program objective is to develop a composite flywheel system for primary energy storage in a flywheel powered vehicle. These initial tests were intended to evaluate the performance of full-size composite rotor elements, high-speed bearings and shaft seals for that system under conditions simulating as closely as possible those anticipated in a finished vehicle. Performance of the angular contact ball bearings is reported to be satisfactory at all speeds; a simplified lubrication system is recommended for second generation hardware. Performance of the ferrofluidic shaft seals is reported to be marginal, as they failed to hold a hard vacuum at the maximum design speed. Several concepts for improved seals are offered for second generation hardware. The test objectives for the high-speed composite flywheel rotor were not achieved due to dynamic instability problems with the test hardware. Recommendations are offered for the design of second generation hardware, and a scope of activities is proposed for the second phase of this program.
Date:
June 30, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Pilot plant studies of the bioconversion of cellulose and production of ethanol
Progress is reported in the following studies on analysis and evaluation of potential raw materials: preliminary pretreatment studies using wheat straw; extraction of wheat straw with alcohol and water at elevated temperatures; extraction of ground wood with alcohol and water at elevated temperatures; and, delignification of newsprint with ethylene glycol. Other research in progress includes studies on: utilization of hemicellulose sugars; process design and economics of hydrolysis processes and ethanol fermentation; and, pilot plant process development and design, including cell-recycle systems for cellulase production, continuous hydrolysis, countercurrent hydrolysis, and ethanol fermentation studies. (JGB)
Date:
June 30, 1977
Creator:
Wilke, C.R.
Object Type:
Report
System:
The UNT Digital Library
Programmatic environmental assessment of the DOE Solar Agricultural and Industrial Process Heat Program
The program's potential environmental impacts are evaluated to ensure that environmental issues are considered at the earliest meaningful point in the decision-making process. The existing environment is studied for the following: grain drying; crop drying; livestock shelter heating; food processing; textile products; lumber and wood products; paper products; chemicals; petroleum refining; stone, clay, and glass products; and primary metals industries. Environmental impacts of the proposed action on the following are studied: air quality, water quality, ecosystems, health and safety, land use, esthetics, and social and institutional impacts. (MHR)
Date:
June 1, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Systematics of gamma decay through low-lying vibrational levels of even--even nuclei excited by (p,p') and (n,n') reactions
A series of experiments was performed in which gamma-ray spectra were measured, using a Ge(Li) detector, for incident 7 to 26-MeV protons on the even-even vibrational nuclei /sup 56/Fe, /sup 62/Ni, /sup 64/Zn, /sup 108/Pd, /sup 110/Cd, /sup 114/Cd, /sup 116/Cd, /sup 116/Sn, /sup 120/Sn, and /sup 206/Pb, and for incident 14-MeV neutrons on natural Fe, Ni, Zn, Cd, Sn, and Pb. These measurements yielded gamma-ray cross sections from which it was inferred that almost all of the gamma cascades from (p,p') and (n,n') reactions passed down through the first 2/sup +/ levels. Consequently, the strength of the 2/sup +/ ..-->.. 0/sup +/ gamma transitions were found to be an indirect measure of the (p,p') or (n,n') cross sections. Several types of nuclear model calculations were performed and compared with experimental results. These calculations included coupled-channel calculations to reproduce the direct, collective excitation of the low-lying levels, and statistical plus pre-equilibrium model calculations to reproduce the (p,p') and the (n,n') cross sections for comparison with the 2/sup +/ ..-->.. 0/sup +/ gamma measurements. The agreement between calculation and experiment was generally good except at high energies, where pre-equilibrium processes dominate (i.e. around 26-MeV). Here discrepancies between calculations from the two …
Date:
June 30, 1977
Creator:
Koopman, R. P.
Object Type:
Report
System:
The UNT Digital Library
Plasma boundary layer and magnetopause layer of the earth's magnetosphere
IMP 6 observations of the plasma boundary layer (PBL) and magnetopause layer (MPL) of the earth's magnetosphere indicate that plasma in the low-latitude portion of the PBL is supplied primarily by direct transport of magnetosheath plasma across the MPL and that this transport process is relatively widespread over the entire sunward magnetospheric boundary.
Date:
June 1, 1979
Creator:
Eastman, T.E.
Object Type:
Report
System:
The UNT Digital Library
TFTR ultrahigh-vacuum pumping system incorporating mercury diffusion pumps
The TFTR vacuum vessel will have a system of four 61 cm diameter mercury diffusion pumps to provide a base pressure in the 10/sup -8/ to 10/sup -9/ Torr range as well as a low impurity level within the vessel. The system, called the Torus Vacuum Pumping System (TVPS), will be employed with the aid of an occasional 250/sup 0/C bakeout in situ as well as periodic applications of aggressive discharge cleaning. The TVPS is an ultrahigh-vacuum (UHV) system using no elastomers as well as being a closed system with respect to tritium or any tritiated gases. The backing system employing approximately 75 all-metal isolation valves is designed with the features of redundancy and flexibility employed in a variety of ways to meet the fundamental requirements and functions enumerated for the TVPS. Since the design, is one which is a modification of the conceptual design of the TVPS, those features which have changed are discussed. Calculations are presented for the major performance parameters anticipated for the TVPS and include conductances, effective pumping speeds, base pressures, operating parameters, getter pump parameters, and calculations of time constants associated with leak checking. Modifications in the vacuum pumping system for the guard regions on …
Date:
June 1, 1976
Creator:
Sink, D. A. & Sniderman, M.
Object Type:
Report
System:
The UNT Digital Library