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Covers by polars of arrangements (open access)

Covers by polars of arrangements

For a collection of hyperplanes passing through the origin in euclidean space let S be the induced subdivision. Let T be the collection of polars of the full cells of S. If only the origin lies in all hyperplanes, T forms a {kappa} {approximately} fold cover of euclidean space. If, in addition, the collection of hyperplanes is of size m and is regular, then {kappa} is m {minus} 1 choose n {minus} 1. Other similar results relate to spheres, hemispheres, and linear programming.
Date: August 1, 1990
Creator: Eaves, B.C. (Stanford Univ., CA (USA). Systems Optimization Lab.) & Hoffman, A.J. (IBM Watson Research Center, Yorktown Heights, NY (USA))
Object Type: Report
System: The UNT Digital Library
Evolution of federal support of science (open access)

Evolution of federal support of science

Evolution of Federal Support of Science'' is Dr. G. T. Seaborg's speech presented at the symposium on the Establishment of Research Support Agencies, held on August 30, 1990, in Washington, DC. He gives a brief history on the development of nuclear energy from the discovery of fission in 1938 to the completion of uranium bombs in 1944. He also covered the scientific activities during the war, which included the establishment of National Defense Research Committee, the Office of Scientific Research and Development, and the Atomic Energy Act. He discussed the debate between the little science'' and the big science,'' which requires hundreds of billions of dollars, such as the superconducting super collider. Dr. Seaborg believes that our country can afford to support both research activities, if we could reduce the expenses of military expansion. 22 figs.
Date: August 1, 1990
Creator: Seaborg, G. T.
Object Type: Article
System: The UNT Digital Library
A two-dimensional thermomechanical simulation of a gas metal arc welding process (open access)

A two-dimensional thermomechanical simulation of a gas metal arc welding process

A low heat input gas metal arc (GMA) weld overlay process is being investigated as a possible means to repair Savannah River nuclear reactor tanks in the event cracks are detected in the reactor walls. Two-dimensional thermomechanical simulations of a GMA welding process were performed using the finite element code ABAQUS to assist in the design of the upcoming weld experiments on helium-charged specimens. The thermal model correlated well with existing test data, i.e., fusion zone depth and thermocouple data. In addition, numerical results revealed that after cool-down the final deformation of the workpiece was qualitatively similar to the shape observed experimentally. Based on these analyses, conservative recommendations were made for the workpiece dimensions, weld pass spacing, and thermomechanical boundary conditions to ensure the experiments would be as representative as possible of welding on the reactor walls. 12 refs., 13 figs.
Date: August 1, 1990
Creator: Ortega, A.R.
Object Type: Report
System: The UNT Digital Library
The Foerster, Dexter, and Inokuti-Hirayama models of the time dependence of fluorescence amplitude: An annotated bibliography (open access)

The Foerster, Dexter, and Inokuti-Hirayama models of the time dependence of fluorescence amplitude: An annotated bibliography

This annotated bibliography reviews research in the fluorescence of systems described by the Foerster model. Sixty-two papers, largely from research based on the work of Inokuti and Hirayama in 1965, are cited. The collection emphasizes the description of the time evolution of the fluorescence amplitude. This time evolution is important to the current research in thermal metrology that uses the temperature-dependent fluorescence of rare-earth-doped ceramic phosphors and in many other applications of fluorescent materials. 20 refs.
Date: August 1, 1990
Creator: Dowell, L.J.
Object Type: Report
System: The UNT Digital Library
Measurement of the 2 sup 2 S sub 1/2 -2 sup 2 P sub 3/2 fine structure interval in muonium (open access)

Measurement of the 2 sup 2 S sub 1/2 -2 sup 2 P sub 3/2 fine structure interval in muonium

The (2{sup 2}S{sub 1/2} {minus} 2{sup 2}P{sub 3/2}) fine structure transition in muonium has been observed for the first time. The measured value is 9895 {sub {minus}30}{sup {plus}35}MHz. This measurement, when included with the theoretical value for the 2{sup 2}P{sub 1/2} {minus} 2{sup 2}P{sub 3/2} fine structure interval, gives a value for the Lamb shift (2{sup 2}S{sub 1/2} {minus} 2{sup 2}P{sub 1/2}) independent of previous direct measurements. From the theoretical value for the fine structure interval, 10921.833(3) MHz, the value for the Lamb shift determined from this experiment is 1027{sub {minus}35}{sup {plus}30} MHz and is in agreement with the prediction of quantum electrodynamics (QED) of 1047.5(3) MHz. Previous experimental values for the Lamb shift (2{sup 2}S{sub 1/2} {minus}2{sup 2}P{sub 1/2}) in muonium are 1070{sub {minus}15}{sup {plus} 12} MHz and 1042{sub {minus}23}{sup {plus}21} MHz. Combining this result with these previous results gives a new experimental value of 1058{sub {minus}12}{sup {plus}10} for the Lamb shift in muonium. Muonium, the bound state of two structureless leptons ({mu}{sup +}e{sup {minus}}), is an ideal system for testing bound state QED because of the lack of hadronic structure as exists in the hydrogen system. The measurement makes use of the techniques of atomic beam microwave spectroscopy. …
Date: August 1, 1990
Creator: Kettell, S.H.
Object Type: Report
System: The UNT Digital Library
A planning framework for transferring building energy technologies: Executive Summary (open access)

A planning framework for transferring building energy technologies: Executive Summary

Accelerating the adoption of new and existing cost-effective technologies has significant potential to reduce the energy consumed in US buildings. This report summarizes some of the key results of an interlaboratory technology transfer planning effort in support of the US Department of Energy's Office of Building Technologies (the full report is published under SERI number TP-260-3729). A guiding assumption for planning was that OBT's R D program should forge linkages with existing programs whose goals involved enhancing energy efficiency in buildings. An ad hoc Technology Transfer Advisory Group reviewed the existing analysis and technology transfer program, brainstormed technology transfer approaches, interviewed DOE program managers, identified applicable research results, and developed a framework that management could use in deciding on the best investments of technology transfer resources. Representatives of 22 organizations were interviewed on their views of the potential for transferring energy efficiency technologies through active linking with OBT. The report describes in summary these programs and interview results; outlines OBT tools, technologies, and practices to be transferred; defines OBT audiences; identifies technology transfer functions and presents a framework devised using functions and audiences; presents some example technology transfer activities; and summarizes the Advisory Group's recommendations.
Date: August 1, 1990
Creator: Farhar, B C; Brown, M A; Mohler, B L; Wilde, M & Abel, F H
Object Type: Report
System: The UNT Digital Library
High speed acquisition of multi-parameter data using a Macintosh II CX (open access)

High speed acquisition of multi-parameter data using a Macintosh II CX

Accelerator mass spectrometry systems based on >3MV tandem accelerators often use multi-anode ionization detectors and/or time-of-flight detectors to identify individual isotopes through multi-parameter analysis. A Macintosh llcx has been programmed to collect AMS data from a CAMAC-implemented analyzer and to display the histogrammed individual parameters and a double-parameter array. The computer-CAMAC connection is through a Nu-Bus to CAMAC dataway interface which allows direct addressing to all functions and locations in the crate. The asynchronous data from counting the rare isotope is sorted into a CAMAC memory module by a list sequence controller. Isotope switching is controlled by a one-cycle timing generator. A rate-dependent amount of time is used to transfer the data from the memory module at the end of each timing cycle. The present configuration uses 10 to 75 ms for rates of 500--10000 cps. Parameter analysis occurs during the rest of the 520 ms data collection cycle. Completed measurements of the isotope concentrations of each sample are written to files which are compatible with standard Macintosh databases or other processing programs. The system is inexpensive and operates at speeds comparable to those obtainable using larger computers.
Date: August 1, 1990
Creator: Berno, A.; Vogel, J.S. & Caffee, M.
Object Type: Article
System: The UNT Digital Library
Labeling cellular elements of blood with Technetium-99m (open access)

Labeling cellular elements of blood with Technetium-99m

The purpose of this proposal is to develop new technique of labeling platelets and white cells with Tc-99m radionuclide. The conditions of labeling canine platelets and white cells with the lipid-soluble Tc-99m HMPAO have been optimized. The function of labeled platelets were evaluated by the determination of platelet survival time and recovery and these values were compared with that of In-111 tropolone labeled platelets. We developed the bilateral femoral catheterization model for the evaluation of platelet-thrombosis on control and heparin-bonded catheters in dogs. We are evaluating platelet thrombosis in the hollow-fiber hemodialyzer with Tc-99m and In-111 labeled platelets. We have developed the flow-loop for in vitro studies and are using a pig model for quantitation of platelet-consumption during hemodialysis. We are currently evaluating the new technique of platelet and white cell-labeling with Tc-99m and testing them in animal models of thrombosis and infection (osteo-myelitis). We are also using the Tc-99m HMPAO labeled mixed white cells in the early diagnosis (3-hour post-injection) of acute and chronic infection in patients and comparing the results with that of IN-111 oxine labeled white cells.
Date: August 1, 1990
Creator: Dewanjee, M.K.
Object Type: Report
System: The UNT Digital Library
A summary of ground motion effects at SLAC (Stanford Linear Accelerator Center) resulting from the Oct 17th 1989 earthquake (open access)

A summary of ground motion effects at SLAC (Stanford Linear Accelerator Center) resulting from the Oct 17th 1989 earthquake

Ground motions resulting from the October 17th 1989 (Loma Prieta) earthquake are described and can be correlated with some geologic features of the SLAC site. Recent deformations of the linac are also related to slow motions observed over the past 20 years. Measured characteristics of the earthquake are listed. Some effects on machine components and detectors are noted. 18 refs., 16 figs.
Date: August 1, 1990
Creator: Ruland, R. E.
Object Type: Article
System: The UNT Digital Library
Dynamics of surface melting (open access)

Dynamics of surface melting

The objectives of this program is to study the phenomenon of surface melting of single crystals of metals, to test for its existence, and to investigate its dynamics. Both conventional static electron diffraction and dynamic ultrafast electron diffraction are used in our study. This year, the ultrahigh vacuum facility containing the picosecond electron reflection high-energy electron diffraction system was equipped with a cylindrical mirror analyzer and a static electron gum for Auger spectroscopy. An image analysis system capable of acquiring the pulsed diffraction patterns was assembled and used in analysis of picosecond laser heated surfaces. A large set of time-resolved experiments were conducted to study the thermal response of Pb(110) to picosecond laser heating. The surface Debye-Waller effect was used to time-resolve the evolution of surface temperature. This provided us with a picosecond time-resolved surface lattice temperature probe. Results for laser fluences below surface melting show agreement with a heat-diffusion model. The temperature dependence of the Pb(100) along the (110) and the (001) azimuths using x-ray photoelectron forward scattering of the 4f{sub 7/2} core-level photoelectrons confirmed, for the first time, surface melting of Pb(100) at temperatures as low as 560 K.
Date: August 1, 1990
Creator: Elsayed-Ali, H.E.
Object Type: Report
System: The UNT Digital Library
Reference data file for neutron spectrum adjustment and related radiation damage calculations (open access)

Reference data file for neutron spectrum adjustment and related radiation damage calculations

The REAL-88 interlaboratory exercise organized by IAEA resulted in a neutron metrology file. (NMF-90) comprising problem dependent data for benchmark neutron fields, furthermore, nuclear data and computer programs for neutron spectrum adjustment and radiation damage parameter calculations for the service life assessment of nuclear facilities. Calculation results of some experienced laboratories are also present. This paper describes and analyses the content of the neutron metrology file and outlines the most important problems and tasks to be solved in the field of radiation damage parameter calculations. 14 refs., 2 figs., 1 tab.
Date: August 1, 1990
Creator: Zsolnay, E.M. (Budapesti Mueszaki Egyetem, Budapest (Hungary)); Nolthenius, H.J.; Greenwood, L.R. & Szondi, E.J. (Pacific Northwest Lab., Richland, WA (USA))
Object Type: Article
System: The UNT Digital Library
Power Burst Facility/Boron Neutron Capture Therapy Program for cancer treatment (open access)

Power Burst Facility/Boron Neutron Capture Therapy Program for cancer treatment

This report discusses monthly progress in the Power Boron Facility/Boron Neutron Capture Therapy (PBF/BNCT) Program for Cancer Treatment. Highlights of the PBF/BNCT Program during August 1990 include progress within the areas of: Gross Boron Analysis in Tissue, Blood, and Urine, boron microscopic (subcellular) analytical development, noninvasive boron quantitative determination, analytical radiation transport and interaction modeling for BNCT, large animal model studies, neutron source and facility preparation, administration and common support and PBF operations.
Date: August 1, 1990
Creator: Ackermann, A.L. (ed.) & Dorn, R.V. III.
Object Type: Report
System: The UNT Digital Library
Optimizing the temperature compensation of an electronic pressure measurement system (open access)

Optimizing the temperature compensation of an electronic pressure measurement system

In an effort to minimize temperature sensitivity, the pressure measurement channels in the sensor/electronics modules of a high-resolution multiplexed pressure measurement system were analyzed. The pressure sensor (a silicon diaphragm strain gage) was known to have two temperature-dependent parameters. Component testing revealed that the current source driving the pressure sensor was also temperature sensitive. Although the transducer manufacturer supplies empirically selected temperature compensation resistors with each transducer, it was determined that the temperature sensitivity compensation could be optimized for this application by changing one of these resistors. By modifying the value of the sensitivity compensation resistor to optimize performance in this application, the temperature sensitivity of the pressure measurement channels was reduced by more than 60%.
Date: August 1, 1990
Creator: Maxey, L.C. & Blalock, T.V.
Object Type: Report
System: The UNT Digital Library
Data requirements for valuing externalities: The role of existing permitting processes (open access)

Data requirements for valuing externalities: The role of existing permitting processes

While the assessment of externalities, or residual impacts, will place new demands on regulators, utilities, and developers, existing processes already require certain data and information that may fulfill some of the data needs for externality valuation. This paper examines existing siting, permitting, and other processes and highlights similarities and differences between their data requirements and the data required to value environmental externalities. It specifically considers existing requirements for siting new electricity resources in Oregon and compares them with the information and data needed to value externalities for such resources. This paper also presents several observations about how states can take advantage of data acquired through processes already in place as they move into an era when externalities are considered in utility decision-making. It presents other observations on the similarities and differences between the data requirements under existing processes and those for valuing externalities. This paper also briefly discusses the special case of cumulative impacts. And it presents recommendations on what steps to take in future efforts to value externalities. 35 refs., 2 tabs.
Date: August 1, 1990
Creator: Lee, A. D.; Baechler, M. C. & Callaway, J. M.
Object Type: Article
System: The UNT Digital Library
Development and Test Case Application of a Waste Minimization Project Evaluation Method (open access)

Development and Test Case Application of a Waste Minimization Project Evaluation Method

The authors have developed and applied a methodology to evaluate and prioritize proposed waste minimization activities affecting Department of Energy (DOE) programs. The approach provides a systematic and defensible method for selecting a set of waste minimization proposals that maximizes the benefits to DOE while maintaining costs within a specified budget. The report discusses the development of a structured set of evaluation criteria to characterize waste minimization issues; techniques for documenting the anticipated and potential costs, risks, and benefits of waste minimization proposals; and a method of translating disparate data into a figure of merit for each proposal. A test case demonstration of this prioritization approach was applied to proposals currently being considered at two DOE weapons production facilities. Recommendations are provided for combining this approach with the existing DOE proposal selection process. 9 refs., 9 figs., 3 tabs.
Date: August 1, 1990
Creator: Kjeldgaard, Edwin A.; Saloio, Jose H. & Varnado, G. Bruce
Object Type: Report
System: The UNT Digital Library
Conservation voltage reduction potential in the Pacific Northwest (open access)

Conservation voltage reduction potential in the Pacific Northwest

This paper summarizes a study performed by Pacific Northwest Laboratory (PNL) indicating that the region-wide implementation of conservation voltage reduction (CVR) would provide a significant level of electric energy conservation in the Bonneville Power Administration (BPA) service area. This resource was estimated by developing supply curves showing the magnitude of energy savings as a function of CVR implementation cost. Energy savings were estimated for residential, commercial, agricultural irrigation, and industrial consumer classes. Using the convention of expressing energy conservation in average megawatts (AMW), the CVR conservation resource in the Pacific Northwest was estimated to be between 170 and 268 AMW at a cost of 5 cents/kWh. Estimates were also made for the contribution of major load sectors to the total CVR resource. Approximately 55% of the total was estimated to be available in the residential sector. Contributions by the other sectors considered were as follows: commercial, 29%; industrial, 14%; and agricultural irrigation, 3%. A large portion (142 to 230 AMW) of the conservation resource would be available at less than 1 cent/kWh. a median estimate of the regional CVR resource at 1 cent/kWh (179 AMW) exceeds the conservation potential (150 AMW) expected from possible implementation of major efficiency improvements on …
Date: August 1, 1990
Creator: De Steese, J. G.; Englin, J. E. & Sands, R. D.
Object Type: Article
System: The UNT Digital Library
Animal Intrusion Status Report for Fiscal Year 1989 (open access)

Animal Intrusion Status Report for Fiscal Year 1989

The Protective Barrier and Warning Marker System Development Plan identified tasks that need to be completed to design a final protective barrier to implement in-place disposal of radioactive waste. This report summarizes the animal intrusion tasks that were conducted by Westinghouse Hanford Company in fiscal years 1988 and 1989 with respect to small mammals and water infiltration. 2 refs., 8 figs., 6 tabs.
Date: August 1, 1990
Creator: Landeen, D.S.
Object Type: Report
System: The UNT Digital Library
CP asymmetries in B sup 0 decays beyond the Standard Model (open access)

CP asymmetries in B sup 0 decays beyond the Standard Model

Of the many ingredients of the Standard Model that are relevant for the analysis of CP asymmetries in B{sup 0} decays, some are likely to hold even beyond the Standard Model while other are sensitive to new physics. Consequently, certain predictions are maintained while other may shoe dramatic deviations from the Standard Model. Many classes of models may show clear signatures when the asymmetries are measured: four quark generations, Z-mediated flavor changing neutral currents, supersymmetry and real superweak'' models. On the other hand, models of left-right symmetry and multi-Higgs sectors with natural flavor conservation are unlikely to modify the Standard Model predictions.
Date: August 1, 1990
Creator: Dib, C.O. (California Univ., Los Angeles, CA (USA). Dept. of Physics); London, D. (Montreal Univ., PQ (Canada). Lab. de Physique Nucleaire) & Nir, Y. (Stanford Linear Accelerator Center, Menlo Park, CA (USA))
Object Type: Article
System: The UNT Digital Library
Atmospheric dispersion modeling and meteorological monitoring in support of emergency planning and response for the US Army's Chemical Stockpile Disposal Program (open access)

Atmospheric dispersion modeling and meteorological monitoring in support of emergency planning and response for the US Army's Chemical Stockpile Disposal Program

This technical memorandum examines the role of atmospheric dispersion modeling and meteorological monitoring in support of emergency planning and response for the US Army's Chemical Stockpile Disposal Program (CSDP). Air dispersion modeling and meteorological monitoring are expected to form key components in integrated accident assessment and warning systems at each of the eight CSDP installations. This report assesses the capabilities of operating state-of-the-art systems in order to establish a baseline for developing the requirements of the CSDP systems. A general tutorial on the types of atmospheric dispersion models currently available is provided, and the criteria for selection of emergency response models are developed. The requirements for meteorological monitoring are also described. In addition, the basic limitations of modeling and monitoring are discussed, and the importance of model verification is emphasized. Staffing requirements to operate an integrated modeling and monitoring system are characterized. The current state of modeling, monitoring, and staffing levels in support of emergency response at the eight US Army chemical stockpile depots involved in the CSDP is examined. Specific requirements appropriate to emergency planning and response at each of the eight sites are described. Recommendations are made for both the integrated system and the individual components of air …
Date: August 1, 1990
Creator: Miller, R. L.
Object Type: Report
System: The UNT Digital Library
A modification of 4330 alloy steel (open access)

A modification of 4330 alloy steel

We have developed a modification of 4330 alloy steel which does not have an exact equivalent expressed in any standard specification. When we compare the ballistic performance of our modified cast steel in thicknesses of about 120 mm with that of stacked, 24 mm thick rolled 4340 alloy steel plates of comparable hardness and the same total thickness, we do not find a significant difference in terminal ballistic performance against either heavy metal kinetic energy penetrators or precision shaped charges. This result is surprising in relation to contemporary experience in which cast steel has been found to be ballistically inferior to rolled steel against either kinetic energy projectiles or shaped charge warheads. 1 ref., 9 figs.
Date: August 1, 1990
Creator: Gogolewski, Raymond; Cunningham, Bruce J.; Gentile, Robert & Fleming, Scott
Object Type: Article
System: The UNT Digital Library
Analysis of health impact inputs to the US Department of Energy's risk information system (open access)

Analysis of health impact inputs to the US Department of Energy's risk information system

The US Department of Energy (DOE) is in the process of completing a survey of environmental problems, referred to as the Environmental Survey, at their facilities across the country. The DOE Risk Information System (RIS) is being used to prioritize these environmental problems identified in the Environmental Survey's findings. This report contains a discussion of site-specific public health risk parameters and the rationale for their inclusion in the RIS. These parameters are based on computed potential impacts obtained with the Multimedia Environmental Pollutant Assessment System (MEPAS). MEPAS is a computer-based methodology for evaluating the potential exposures resulting from multimedia environmental transport of hazardous materials. This report has three related objectives: document the role of MEPAS in the RIS framework, report the results of the analysis of alternative risk parameters that led to the current RIS risk parameters, and describe analysis of uncertainties in the risk-related parameters. 20 refs., 17 figs., 10 tabs.
Date: August 1, 1990
Creator: Droppo, Jr., J. G.; Buck, J. W.; Strenge, D. L. & Siegel, M. R.
Object Type: Report
System: The UNT Digital Library
Building Thermal Envelope Systems and Materials (BTESM) and research utilization/technology transfer progress report for DOE (Department of Energy) Office of Buildings Energy Research (open access)

Building Thermal Envelope Systems and Materials (BTESM) and research utilization/technology transfer progress report for DOE (Department of Energy) Office of Buildings Energy Research

The Monthly Report of the Building Thermal Envelope Systems and Materials (BTESM) Program is a monthly update of both in-house ORNL projects and subcontract activities in the research areas of building materials, wall systems, foundations, roofs, building diagnostics, and research utilization and technology transfer. Presentations are not stand-alone paragraphs every month. Their principal values are the short-time lapse between accomplishment and reporting and their evolution over a period of several months.
Date: August 1, 1990
Creator: Burn, G. (comp.)
Object Type: Report
System: The UNT Digital Library
New results from AGS (Alternating Gradient Synchrotron) heavy-ion experiments (open access)

New results from AGS (Alternating Gradient Synchrotron) heavy-ion experiments

We review the most recent data from Experiments 802, 810 and 814 of the heavy-ion program at the Brookhaven Alternating Gradient Synchrotron (AGS). 8 refs., 6 figs.
Date: August 1, 1990
Creator: Bloomer, M.A. (Lawrence Berkeley Lab., CA (USA)); Love, W. (Brookhaven National Lab., Upton, NY (USA)) & Waters, L. (State Univ. of New York, Stony Brook, NY (USA))
Object Type: Article
System: The UNT Digital Library
Investigation of the organic matter in inactive nuclear tank liquids (open access)

Investigation of the organic matter in inactive nuclear tank liquids

Environmental Protection Agency (EPA) methodology for regulatory organics fails to account for the organic matter that is suggested by total organic carbon (TOC) analysis in the Oak Ridge National Laboratory (ORNL) inactive nuclear waste-tank liquids and sludges. Identification and measurement of the total organics are needed to select appropriate waste treatment technologies. An initial investigation was made of the nature of the organics in several waste-tank liquids. This report details the analysis of ORNL wastes.
Date: August 1, 1990
Creator: Schenley, R.L. & Griest, W.H.
Object Type: Report
System: The UNT Digital Library