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277,197 Matching Results

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(open access)

Compound nucleus studies withy reverse kinematics

Reverse kinematics reactions are used to demonstrate the compound nucleus origin of intermediate mass particles at low energies and the extension of the same mechanism at higher energies. No evidence has appeared in our energy range for liquid-vapor equilibrium or cold fragmentation mechanisms. 11 refs., 12 figs.

Date: June 1, 1985

Creator: Moretto, Luciano G.

Object Type: Article

System: The UNT Digital Library

(open access)

pH meter probe assembly

An assembly is disclosed for mounting a pH probe in a flowing solution, such as a sanitary sewer line, which prevents the sensitive glass portion of the probe from becoming coated with grease, oil, and other contaminants, whereby the probe gives reliable pH indication over an extended period of time. The pH probe assembly utilizes a special filter media and a timed back-rinse feature for flushing clear surface contaminants of the filter. The flushing liquid is of a known pH and is utilized to check performance of the probe.

Date: June 12, 1981

Creator: Hale, C.J.

Object Type: Patent

System: The UNT Digital Library

(open access)

Bates solar industrial process steam application environmental impact assessment

It is planned to install 34,440 square feet of linear parabolic trough solar collectors at a new corrugator plant for making corrugated boxes. The system is to operate in parallel with a fossil fuel boiler. An assessment is presented of the impacts of the solar energy system on the existing environment and to determine whether or not a more detailed environmental impact statement is needed. The environmental assessment is based on actual operational data obtained on the collector, fluid, and heat transport system. A description of the design of the solar energy system and its application is given. Also included is a discussion of the location of the new plant in Fort Worth, Texas, and of the surrounding environment. Environmental impacts are discussed in detail, and alternatives to the solar industrial process steam retrofit application are offered. It is concluded that the overall benefits from the solar industrial process heat system outweigh any negative environmental factors. Benefits include reduced fossil fuel demand, with attending reductions in air pollutants. The selection of a stable heat transfer fluid with low toxicity and biodegradable qualities minimizes environmental damage due to fluid spills, personal exposure, and degradation byproducts. The collector is found to be …

Date: June 30, 1981

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Recent coal-oil mixture combustion tests at PETC

Coal-oil mixture combustion tests with coal concentrations of up to 50 percent were successfully conducted in a 700 horsepower watertube boiler designed originally for oil firing. A 500-h duration test with coal-oil mixture containing 40 percent coal has also been completed. No derating of the boiler occurred, carbon-conversion efficiencies were above 98 percent, and boiler efficiencies were the same as when firing No. 6 fuel oil. All combustion tests were conducted with No. 6 fuel oil mixed with Pittsburgh Seam coal pulverized to a coal particle size of 90 percent minus 200 mesh. Test results relating to boiler performance, pollutant emissions, ash deposition, and corrosion, erosion, and fouling behavior are presented.

Date: June 1, 1980

Creator: Pan, Y. S.; Bellas, G. T.; Mathur, M. P.; Joubert, J. I. & Bienstock, D.

Object Type: Report

System: The UNT Digital Library

(open access)

Savannah River Site RCRA Facility Investigation plan: Road A Chemical Basin

The nature of wastes disposed of at the Road A Chemical Basin (RACB) is such that some degree of soil contamination is probable. Lead has also been detected in site monitoring wells at concentrations above SRS background levels. A RCRA Facility Investigation (RFI) is proposed for the RACB and will include a ground penetrating radar (GPR) survey, collection and chemical and radiological analyses of soil cores, installation of groundwater monitoring wells, collection and chemical and radiological analyses of groundwater samples, and collection of chemical and radiological analyses of surface water and sediment samples. Upon completion of the proposed RFI field work and chemical and radiological analyses, and RFI report should be prepared to present conclusions on the nature and extent of contamination at the site, and to make recommendations for site remediation. If contamination is detected at concentrations above SRS background levels, a receptor analysis should be done to evaluate potential impacts of site contamination on nearby populations.

Date: June 1, 1989

Creator: unknown

Object Type: Report

System: The UNT Digital Library

(open access)

Underground Energy Storage Program. 1984 annual summary

Underground Energy Storage (UES) Program activities during the period from April 1984 through March 1985 are briefly described. Primary activities in seasonal thermal energy storage (STES) involved field testing of high-temperature (>100/sup 0/C (212/sup 0/F)) aquifer thermal energy storage (ATES) at St. Paul, laboratory studies of geochemical issues associated with high-temperatures ATES, monitoring of chill ATES facilities in Tuscaloosa, and STES linked with solar energy collection. The scope of international activities in STES is briefly discussed.

Date: June 1, 1985

Creator: Kannberg, L.D.

Object Type: Report

System: The UNT Digital Library

(open access)

250 keV resonance in the total neutron cross section of /sup 6/Li

The energy of the observed maximum of the 250 keV resonance in the total neutron cross section of /sup 6/Li is measured to be 244.5 +- 1 keV relative to the velocity of light. The observed peak magnitude is 11.20 +- 0.20 b.

Date: June 1, 1977

Creator: Smith, A. B.; Guenther, P.; Havel, D. & Whalen, J. F.

Object Type: Report

System: The UNT Digital Library

(open access)

Master oscillator stability requirements considerations

This note attempts to point out some ideas about the required stability of the 476 MHz master oscillator, assuming that the phase noise of the oscillator is the only source of noise in the accelerator system.

Date: June 24, 1986

Creator: Schwarz, H. & Vancraeynest, J.

Object Type: Report

System: The UNT Digital Library

(open access)

Houston, Texas design/build house. Case study report

The task activities relating to the Houston house, including problems, constructive comments, and successes, are described. Included in appendices are: cost data, methodology for ranking cities, house information sheet, thermal performance analysis, architectural information release, press releases and news clippings, and house pictures. One appendix was abstracted separately. (MHR)

Date: June 1, 1981

Creator: Borden, J. O. & Porter, C. B.

Object Type: Report

System: The UNT Digital Library

(open access)

Utility applications program. Annual report for 1981

The purpose of the Utility Applications Program is to provide information and assistance to interested utilities on central station energy storage systems. Compressed air and underground pumped hydroelectric energy storage are the primary technical focus. Smaller utilities are the primary targets of this program, as they may not have resources to track and utilize new energy conservation developments. The program, initiated during this year-long period, consists of a series of tasks integrating and supporting energy storage implementation. Program management and technical coordination activities monitor the wide range of research ongoing both under government support and in industry and provide a locus for dissemination of results. Recently completed DOE demonstration studies provide the central data base and the DOE CAES and UPH Technology Program activities provide another major resource. In addition a UPH preliminary feasibility study in coorination with Central Vermont Public Servie (CVPS), a Northeast utility, was carried out. The major program activity this period was a comprehensive technology assessment and environmental siting study, performed in coordination with the Soyland Power Cooperative in Decatur, Illinois. The reports from this work established solid siting precedents for CAES application in the US and jointly assisted the utility in assembling the required baseline …

Date: June 1, 1982

Creator: Doherty, T. J. & Loscutoff, W. V.

Object Type: Report

System: The UNT Digital Library

(open access)

Transportation analysis for the concept of regional repositories

Over the past several years, planning associated with the National Waste Terminal Storage (NWTS) program assumed the use of one or two large, centrally located repository facilities. Recently, an alternative approach has been proposed which consists of the use of multiple, smaller regional repositories. In this report, several regional concepts were studied and the transportation requirements for the shipment of spent fuel to the regional repositories were estimated. In general, the transportation requirements decrease as the number of repositories increase. However, as far as transportation is concerned, the point of diminishing returns is reached at approximately one repository in each of three to four regions. Additional savings beyond this point are small. A series of sensitivity studies is also included to demonstrate the impact on the total transportation requirements of varying cask capacity, rail speed, or truck speed. Since most of the projected fuel shipments are to be made by rail, varying the capacity of the rail cask or varying average rail transport speed will have a major effect on overall transportation requirements.

Date: June 1, 1980

Creator: Joy, D.S. & Hudson, B.J.

Object Type: Report

System: The UNT Digital Library

(open access)

R and D in the FY 1983 budget: impacts on the national laboratories

A report on the impact upon LBL of the policy changes and budget actions in Department of Energy programs since early 1981 is given, and some views are given on more general problems that appear to underlie the interaction between the federal government, which supports research, and the scientific community, which performs it. (WHK)

Date: June 1, 1982

Creator: Shirley, D.A.

Object Type: Article

System: The UNT Digital Library

(open access)

Head assembly for multiposition borehole extensometer

A head assembly for a borehole extensometer and an improved extensometer for measuring subsurface subsidence. A plurality of inflatable anchors provide discrete measurement points. A metering rod is fixed to each of the anchors which are displaced when subsidence occurs, thereby translating the attached rod. The head assembly includes a sprocket wheel rotatably mounted on a standpipe and engaged by a chain which is connected at one end to the metering rod and at the other end to a counterweight. A second sprocket wheel connected to the standpipe also engages the chain and drives a connected potentiometer. The head assembly converts the linear displacement of the metering rod to the rotary motion of the second sprocket wheel, which is measured by the potentiometer, producing a continuous electrical output.

Date: June 9, 1981

Creator: Frank, D.N.

Object Type: Patent

System: The UNT Digital Library

(open access)

International training course on implementation of state systems of accounting for and control of nuclear materials: proceedings

This report incorporates all lectures and presentations at the International Training Course on Implementation of State Systems of Accounting for and Control of Nuclear Materials held June 3 through June 21, 1985, at Santa Fe and Los Alamos, New Mexico, and San Clemente, California. Authorized by the US Nuclear Non-Proliferation Act and sponsored by the US Department of Energy in cooperation with the International Atomic Energy Agency, the Course was developed to provide practical training in the design, implementation, and operation of a state system of nuclear materials accountability and control that satisfies both national and international safeguards requirements. Major emphasis for the 1985 course was placed on safeguards methods used at item-control facilities, particularly nuclear power generating stations and test reactors. An introduction to safeguards methods used at bulk handling facilities, particularly low-enriched uranium conversion and fuel fabrication plants, was also included. The course was conducted by the University of California's Los Alamos National Laboratory and the Southern California Edison Company. Tours and demonstrations were arranged at the Los Alamos National Laboratory, Los Alamos, New Mexico, and the San Onofre Nuclear Generating Station, San Clemente, California.

Date: June 1, 1986

Creator: unknown

Object Type: Article

System: The UNT Digital Library

(open access)

US/FRG Umbrella Agreement for Cooperation in GCR Development: Fuel, Fission Products and Graphite Subprogram. Quarterly status report, April 1, 1980-June 1, 1980

Information is presented concerning fuel development; fission product behavior; and graphite development.

Date: June 1980

Creator: Gulden, T. D.

Object Type: Report

System: The UNT Digital Library

(open access)

Bundle duct interaction studies for fuel assemblies. [LMFBR]

It is known that the wire-wrapped rods and duct in an LMFBR are undergoing a gradual structural distortion from the initially uniform geometry under the combined effects of thermal expansion and irradiation induced swelling and creep. These deformations have a significant effect on flow characteristics, thus causing changes in thermal behavior such as cladding temperature and temperature distribution within a bundle. The temperature distribution may further enhance or retard irradiation induced deformation of the bundle. This report summarizes the results of the continuing effort in investigating the bundle-duct interaction, focusing on the need for the large development plant.

Date: June 1, 1981

Creator: Hsia, H.T.S. & Kaplan, S.

Object Type: Report

System: The UNT Digital Library

(open access)

EMC Effect

A review is presented of data and theoretical interpretations of the nuclear dependence of quark and antiquark distributions as observed in the deep inelastic scattering of neutrinos and charged leptons from nuclei. After a summary of the experimental situation and a survey of the broad spectrum of proposed explanations, I concentrate on the Q/sup 2/-rescaling approach and on interpretations in terms of conventional nuclear physics. The review concludes with a list of desirable future experiments. 31 refs., 4 figs.

Date: June 1, 1986

Creator: Berger, E. L.

Object Type: Article

System: The UNT Digital Library

(open access)

Ex-vessel core catcher design requirements and preliminary concepts evaluation. [LMFBR]

As part of the overall study of the consequences of a hypothetical failure to scram following loss of pumping power, design requirements and preliminary concepts evaluation of an ex-vessel core catcher (EVCC) were performed. EVCC is the term applied to a class of devices whose primary objective is to provide a stable subcritical and coolable configuration within containment following a postulated accident in which it is assumed that core debris has penetrated the Reactor Vessel and Guard Vessel. Under these assumed conditions a set of functional requirements were developed for an EVCC and several concepts were evaluated. The studies were specifically directed toward the FFTF design considering the restraints imposed by the physical design and construction of the FFTF plant.

Date: June 14, 1974

Creator: Friedland, A.J. & Tilbrook, R.W.

Object Type: Report

System: The UNT Digital Library

(open access)

Tevatron global radius and 0s system

It has been found to be practical to extract a turn-average measurement of bunch beam phase relative to cavity gap voltage. This 0s signal shows the bunch position on the rf wave throughout injection, acceleration and extraction, including coherent synchrotron oscillations when present. In turn, the time derivative of 0s is a direct measure of global radial position error. We use the 0s signal, driving a phase shifter in the rf low-level system, to damp coherent synchrotron oscillations. Design and operation will be discussed including single beam bunch operation if available. 8 refs., 5 figs.

Date: June 1, 1985

Creator: Bristol, S.; Kerns, C.; Kerns, Q. & Miller, H.W.

Object Type: Article

System: The UNT Digital Library

(open access)

NTD germanium: a novel material for low-temperature bolometers

Six samples of ultra-pure (absolute value N/sub A/ - N/sub D/ absolute value less than or equal to 10/sup 11/cm/sup -3/), single-crystal germanium have been neutron transmutation doped with neutron doses between 7.5 x 10/sup 16/ and 1.88 x 10/sup 18/cm/sup -2/. After thermal annealing at 400/sup 0/C for six hours in a pure argon atmosphere, the samples have been characterized with Hall effect and resistivity measurements between 300 and 0.3 K. Our results show that the resistivity in the low temperature, hopping conduction regime can be approximated with rho = rho/sub 0/exp(..delta../T). The three more heavily doped samples show values for rho/sub 0/ and ..delta.. ranging from 430 to 3.3 ..cap omega.. cm and from 4.9 to 2.8 K, respectively. The excellent reproducibility of neutron transmutation doping and the values of rho/sub 0/ and ..delta.. make NTD Ge a prime candidate for the fabrication of low temperature, low noise bolometers. The large variation in the tabulated values of the thermal neutron cross sections for the different germanium isotopes makes it clear that accurate measurements of these cross-sections for well defined neutron energy spectra would be highly desirable.

Date: June 1, 1982

Creator: Haller, E. E.; Palaio, N. P.; Rodder, M.; Hansen, W. L. & Kreysa, E.

Object Type: Article

System: The UNT Digital Library

(open access)

Seismic monitoring of a flow test in the Salton Sea Geothermal Field

The purpose of this seismic monitoring project was to characterize in detail the micro-seismic activity related to the flow-injection test in the Salton Sea Geothermal Field. Our goal was to determine if any sources of seismic energy related to the test were observable at the surface, using both conventional seismic network techniques and relatively newer array techniques. These methods allowed us to detect and locate both impulsive microearthquakes and continuous sources of seismic energy. Our network, which was sensitive enough to be triggered by magnitude 0.0 or larger events, found no impulsive microearthquakes in the vicinity of the flow test in the 8 month period before the test and only one event during the flow test. We have observed some continuous seismic noise sources that may be attributed to the flow test. 4 refs., 4 figs.

Date: June 1, 1989

Creator: Jarpe, S.P.; Kasameyer, P.W. & Johnston, C.

Object Type: Article

System: The UNT Digital Library

(open access)

US Department of Energy wind turbine candidate site program: the regulatory process

Sites selected in 1979 as tentative sites for installation of a demonstration MOD-2 turbine are emphasized. Selection as a candidate site in this program meant that the US Department of Energy (DOE) designated the site as eligible for a DOE-purchased and installed meteorological tower. The regulatory procedures involved in the siting and installation of these meteorological towers at the majority of the candidate sites are examined. An attempt is also made, in a preliminary fashion, to identify the legal and regulatory procedures that would be required to put up a turbine at each of these candidate sites. The information provided on each of these sites comes primarily from utility representatives, supplemented by conversations with state and local officials. The major findings are summarized on the following: federal requirements, state requirements, local requirements, land ownership, wind rights, and public attitudes.

Date: June 1, 1982

Creator: Greene, M.R. & York, K.R.

Object Type: Report

System: The UNT Digital Library

(open access)

Acoustic emission from beryllium

The acoustic emission from both powder and ingot source beryllium has been measured as a function of strain and prior heat treatment. Most measurements were made during tensile deformation, but a limited number of compression tests have also been performed. The acoustic emission observed was of the burst type, with little or no contribution from continuous type emission. The emission was characterized by the variation of burst rate and average energy per burst as a function of strain. The tensile behavior was qualitatively similar for all the materials tested. Burst rate maxima centered roughly at 0.1 percent and 1.0 percent plastic strain were observed. The magnitude but not the strain at the low strain burst rate peak was very sensitive to prior thermal treatment, while the higher strain burst rate peak was insensitive to prior heat treatment. An energy per burst maximum was observed at 0.2 percent plastic strain, the magnitude of which was moderately sensitive to heat treatment. The Kaiser effect is observed in the material studied. Emission during compression was similar to that observed in tension. The acoustic emission observed is attributed to dislocation motion, as proposed by James and Carpenter for LiF, NaCl, and Zn. Metallographic studies …

Date: June 9, 1976

Creator: Heiple, C. R. & Adams, R. O.

Object Type: Report

System: The UNT Digital Library

(open access)

Energy and technology review

Three topics are covered: detecting genetic damage in humans, argon x-ray line imaging, and complete cutoff of Middle Eastern oil. Separate abstracts were prepared for each.

Date: June 1, 1980

Creator: unknown

Object Type: Report

System: The UNT Digital Library

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