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14,165
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459
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203
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112
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106
Congressional Research Service Reports
67
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64
Office of Technology Assessment
63
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27
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42
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34
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27
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15,323 Matching Results
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Water erosion field tests for Hanford protective barriers: FY 1992 status report
Pacific Northwest Laboratory (PNL) conducted this study for the Office of Technology Development and the Office of Environmental Restoration of the US Department of Energy. The purpose of the study was to investigate the erosion potential of barrier soil covers from high-intensity rainfall events and to propose erosion mitigation criteria for the soil cover. Two sets of field plots were used in the testing program. Small plots (1 m{sup 2}) were used initially for scoping studies and larger plots (32.5 m{sup 2}) were used for a more comprehensive study of soil cover erosion. The study investigated the use of pea gravel admix and naturally established vegetation to reduce erosion of barrier soil covers.
Date:
November 1, 1993
Creator:
Gilmore, B. G. & Walters, W. H.
Object Type:
Report
System:
The UNT Digital Library
Water for Walker Lake
This report discusses the Walker River flows, water rights decrees, agricultural diversions, and other issues related to Walker River water.
Date:
September 1993
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Water level measurements for modeling hydraulic properties in the 300-FF-5 and 100 Aggregate Area Operable units
Pressure transducers connected to dataloggers were used to measure ground water and Columbia River water elevations simultaneously and hourly at 35 locations in the 300-FF-5 Operable Unit and 16 locations in the 100 Aggregate Area Operable Unit on the Hanford Site. Water temperatures were also measured at 12 of these locations. This report details the findings of these studies.
Date:
April 1, 1993
Creator:
Campbell, M. D.; McMahon, W. J. & Simpson, K. R.
Object Type:
Report
System:
The UNT Digital Library
Water levels in continuously monitored wells in the Yucca Mountain area, Nevada, 1985--88
Water levels have been monitored hourly in 15 wells completed in 23 depth intervals in the Yucca Mountain area, Nevada. Water levels were monitored using pressure transducers and were recorded by data loggers. The pressure transducers were periodically calibrated by raising and lowering them in the wells. The water levels were normally measured at approximately the same time that the transducers were calibrated. Where the transducer output appeared reasonable, it was converted to water levels using the calibrations and manual water- level measurements. The amount of transducer output that was converted to water levels ranged from zero for several intervals to about 98 percent for one interval. Fourteen of the wells were completed in Tertiary volcanic rocks and one well was completed in Paleozoic carbonate rocks. Each well monitored from one to four depth intervals. Water-level fluctuation caused by barometric pressure changes and earth tides were observed.
Date:
July 1, 1993
Creator:
Luckey, Richard R.; Lobmeyer, David H. & Burkhardt, Douglas J.
Object Type:
Report
System:
The UNT Digital Library
Water-quality data for the Missouri River and Missouri River alluvium near Weldon Spring, St. Charles County, Missouri, 1991--92
This report contains the water-quality data collected at two cross sections across the Missouri River and from monitoring wells in the Missouri River alluvium near Defiance, Missouri. The sampling results indicate the general water composition from the Missouri River changes with different flow conditions. During low-base flow conditions, the water generally contained about equal quantities of calcium and sodium plus potassium and similar quantities of bicarbonate and sulfate. During high-base flow conditions, water from the river predominantly was a calcium bicarbonate type. During runoff conditions, the water from the river was a calcium bicarbonate type, and sulfate concentrations were larger than during high-base flow conditions but smaller than during low-base flow conditions. The total and dissolved uranium concentrations at both the upstream and downstream cross sections, as well as from the different vertical samples across the river, were similar during each sampling event. However, sodium, sulfate, nitrate, and total and dissolved uranium concentrations varied with different flow conditions. Sodium and sulfate concentrations were larger during low-base flow conditions than during high-base flow or runoff conditions, while nitrate concentrations decreased during low-base flow conditions. Both total and dissolved uranium concentrations were slightly larger during runoff events than during low-base or high-base …
Date:
December 31, 1993
Creator:
Kleeschulte, M. J.
Object Type:
Report
System:
The UNT Digital Library
Water-Quality Evaluation of the Ogallala Aquifer, Texas
The purpose of this report is to examine the quality of the ground water in the Texas High Plains based principally on analyses of recent samples collected from selected wells completed in the Ogallala aquifer.
Date:
August 1993
Creator:
Texas Water Development Board
Object Type:
Report
System:
The Portal to Texas History
Water quality monitoring report for the White Oak Creek Embayment
Water quality monitoring activities that focused on the detection of resuspended sediments in the Clinch River were conducted in conjunction with the White Oak Creek Embayment (WOCE) time-critical Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) removal action to construct a sediment-retention structure at the mouth of White Oak Creek (WOC). Samples were collected by use of a 24-h composite sampler and through real-time water grab sampling of sediment plumes generated by the construction activities. Sampling stations were established both at the WOC mouth, immediately adjacent to the construction site, and at K-1513, the Oak Ridge K-25 Site drinking water intake approximately 9.6 km downstream in the Clinch River. Results are described.
Date:
January 1, 1993
Creator:
Ford, C.J. (Oak Ridge National Lab., TN (United States)) & Wefer, M.T. (Automated Sciences Group, Inc., Oak Ridge, TN (United States))
Object Type:
Report
System:
The UNT Digital Library
Water quality monitoring report for the White Oak Creek Embayment. Environmental Restoration Program
Water quality monitoring activities that focused on the detection of resuspended sediments in the Clinch River were conducted in conjunction with the White Oak Creek Embayment (WOCE) time-critical Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) removal action to construct a sediment-retention structure at the mouth of White Oak Creek (WOC). Samples were collected by use of a 24-h composite sampler and through real-time water grab sampling of sediment plumes generated by the construction activities. Sampling stations were established both at the WOC mouth, immediately adjacent to the construction site, and at K-1513, the Oak Ridge K-25 Site drinking water intake approximately 9.6 km downstream in the Clinch River. Results are described.
Date:
January 1, 1993
Creator:
Ford, C. J. & Wefer, M. T.
Object Type:
Report
System:
The UNT Digital Library
Water Resources Data. Ohio - Water Year 1992. Volume 1. Ohio River Basin excluding project data
Water-resources data for the 1992 water year for Ohio consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground-water wells. This report, in two volumes, contains records for water discharge at 121 gaging stations, 336 wells, and 72 partial-record sites; and water levels at 312 observation wells. Also included are data from miscellaneous sites. Additional water data were collected at various sites not involved in the systematic data-collection program and are published as miscellaneous measurements and analyses. These data represent that part of the National Water Data System collected by the US Geological Survey and cooperating State and Federal agencies in Ohio. Volume 1 covers the central and southern parts of Ohio, emphasizing the Ohio River Basin. (See Order Number DE95010451 for Volume 2 covering the northern part of Ohio.)
Date:
March 1, 1993
Creator:
Shindel, H. L.; Klingler, J. H.; Mangus, J. P. & Trimble, L. E.
Object Type:
Report
System:
The UNT Digital Library
The Water Source, February 1993
Quarterly newsletter of the Edwards Underground Water District discussing news and activities of the organization as well as other information related to water in southern Texas.
Date:
February 1993
Creator:
Edwards Underground Water District (Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Water Source, May 1993
Quarterly newsletter of the Edwards Underground Water District discussing news and activities of the organization as well as other information related to water in southern Texas.
Date:
May 1993
Creator:
Edwards Underground Water District (Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Water Source, October 1993
Quarterly newsletter of the Edwards Underground Water District discussing news and activities of the organization as well as other information related to water in southern Texas.
Date:
October 1993
Creator:
Edwards Underground Water District (Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Water Source, Summer 1993
Quarterly newsletter of the Edwards Underground Water District discussing news and activities of the organization as well as other information related to water in southern Texas.
Date:
Summer 1993
Creator:
Edwards Underground Water District (Tex.)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
A watershed survey and educational program to enhance environmental quality in the Upper Little Tennessee River Valley. Year 4, Executive summary
Work carried out during 1992 under TVA grant No. TV-74216A, administered by the Western North Carolina Alliance, may be broken down into four categories: Index of Biotic Integrity (IBI), Macroinvertebrate Biomonitoring, Visual Reconnaissance, and Survey of Brook Trout. In 1992, we began to shift emphasis from merely studying the watershed to activities aimed at protecting, restoring, or improving water and habitat quality. The ``target`` area for this work in the upper Little Tennessee River watershed was the 10.0 square mile Rabbit Creek watershed (Holly Springs Community), and work conducted in Holly Springs is here reported separately from watershed-wide monitoring activities. Additional topics treated in this report include the relation of this project to other activities in the upper Little Tennessee watershed, significant changes in the watershed which occurred independently of this project, a list of other reports prepared to be made available through the project and a list of meetings. Work carried out under this grant in the Spring Creek and Laurel River watersheds (Madison County, North Carolina) will be reported on separately by Mark Hopey.
Date:
August 1, 1993
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Wave function calculations in finite nuclei
One of the central problems in nuclear physics is the description of nuclei as systems of nucleons interacting via realistic potentials. There are two main aspects of this problem: (1) specification of the Hamiltonian, and (2) calculation of the ground (or excited) states of nuclei with the given interaction. Realistic interactions must contain both two- and three-nucleon potentials and these potentials have a complicated non-central operator structure consisting, for example, of spin, isospin and tensor dependencies. This structure results in formidable many-body problems in the computation of the ground states of nuclei. At Argonne and Urbana, the authors have been following a program of developing realistic NN and NNN interactions and the methods necessary to compute nuclear properties from variational wave functions suitable for these interactions. The wave functions are used to compute energies, density distributions, charge form factors, structure functions, momentum distributions, etc. Most recently they have set up a collaboration with S. Boffi and M. Raduci (University of Pavia) to compute (e,e[prime]p) reactions.
Date:
January 1, 1993
Creator:
Pieper, Steven C.
Object Type:
Article
System:
The UNT Digital Library
Wave function calculations in finite nuclei
One of the central problems in nuclear physics is the description of nuclei as systems of nucleons interacting via realistic potentials. There are two main aspects of this problem: (1) specification of the Hamiltonian, and (2) calculation of the ground (or excited) states of nuclei with the given interaction. Realistic interactions must contain both two- and three-nucleon potentials and these potentials have a complicated non-central operator structure consisting, for example, of spin, isospin and tensor dependencies. This structure results in formidable many-body problems in the computation of the ground states of nuclei. At Argonne and Urbana, the authors have been following a program of developing realistic NN and NNN interactions and the methods necessary to compute nuclear properties from variational wave functions suitable for these interactions. The wave functions are used to compute energies, density distributions, charge form factors, structure functions, momentum distributions, etc. Most recently they have set up a collaboration with S. Boffi and M. Raduci (University of Pavia) to compute (e,e{prime}p) reactions.
Date:
July 1, 1993
Creator:
Pieper, S. C.
Object Type:
Article
System:
The UNT Digital Library
Wavefront sensors for optical diagnostics in fluid mechanics: Application to heated flow, turbulence and droplet evaporation
Optical measurement techniques are extremely useful in fluid mechanics because of their non-invasive nature. However, it is often difficult to separate measurement effects due to pressure, temperature and density in real flows. Using a variation of a Shack-Hartmann wavefront sensor, we have made density measurements that have extremely large dynamic range coupled with excellent sensitivity at high temporal and spatial resolution. We have examined several classes of flow including volumetrically heated gas, turbulence and droplet evaporation.
Date:
September 1, 1993
Creator:
Neal, D. R.; O`Hern, T. J.; Torczynski, J. R.; Warren, M. E.; Shul, R. & McKechnie, T. S.
Object Type:
Article
System:
The UNT Digital Library
Wayne Interim Storage Site environmental report for calendar year 1992, 868 Black Oak Ridge Road, Wayne, New Jersey. Formerly Utilized Sites Remedial Action Program (FUSRAP)
This report describes the environmental surveillance program at the Wayne Interim Storage Site (WISS) and provides the results for 1992. The fenced, site, 32 km (20 mi) northwest of Newark, New Jersey, was used between 1948 and 1971 for commercial processing of monazite sand to separate natural radioisotopes - predominantly thorium. Environmental surveillance of WISS began in 1984 in accordance with Department of Energy (DOE) Order 5400.1 when Congress added the site to DOE`s Formerly Utilized Sites Remedial Action Program (FUSRAP). The environmental surveillance program at WISS includes sampling networks for radon and thoron in air; external gamma radiation exposure; radium-226, radium-228, thorium-230, thorium-232, total uranium, and several chemicals in surface water and sediment; and total uranium, radium-226, radium-228, thorium-230, thorium-232, and organic and inorganic chemicals in groundwater. Monitoring results are compared with applicable Environmental Protection Agency (EPA) and state standards, DOE derived concentration guides (DCGs), dose limits, and other DOE requirements. This monitoring program assists in fulfilling the DOE policy of measuring and monitoring effluents from DOE activities and calculating hypothetical doses. Results for environmental surveillance in 1992 show that the concentrations of all radioactive and most chemical contaminants were below applicable standards.
Date:
May 1, 1993
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The WCRP`93 Workshop on the parameterization of sub-grid scale tracer transport: Results from the LLNL GRANTOUR model
The primary goal of the WCRP Workshop is to improve the development of global chemical transport models by intercomparison of model parameterizations from the major modeling groups around the world. The Global Climate Research Division of LLNL has been invited to participate in this study. A secondary goal of the workshop is to understand how the current models transport short-lived chemical species. Chemical change in the troposphere of the important trace species such as OH and ozone are dependent on the distribution of NO{sub x}(=NO + NO{sub 2}) which is short-lived (hours to days) and has a wide variety of sources. Three case scenarios representing an A: surface source (natural radon source), B: aircraft source, and C: lightning source run for both the winter and summer seasons have been prescribed for the model intercomparison. The figures and tables presented in this report represent the results of running these 3 case scenarios with the Lagrangian version of the LLNL GRANTOUR model. Complete descriptions of the three case scenarios are given in Appendix A. Appendix B gives an example using the Case A: Dec-Jan-Feb, Natural Radon Source to describe the GRANTOUR run specifications. The other case runs for this report change only …
Date:
October 1, 1993
Creator:
Dignon, J.
Object Type:
Report
System:
The UNT Digital Library
Weak neutral currents and collapse initiated supernova
Since 1974 the neutrino processes mediated by neutral currents have been a part of supernova (SN) modeling calculations. In this report only present day SN calculations will be discussed. First I will give brief description of the SN computer model and an outline of the explosion process as depicted by that model. Then I will discuss the role weak neutral current (WNC) processes play in this explosion process. Finally, I will discus inelastic scattering of tau neutrinos by heavy elements in WNC or Earth as a mechanism for measuring the mass of tau neutrino.
Date:
March 19, 1993
Creator:
Wilson, J. R.
Object Type:
Article
System:
The UNT Digital Library
Weak-shock reflection factors
The purpose of this paper is to compare reflection factors for weak shocks from various surfaces, and to focus attention on some unsolved questions. Three different cases are considered: square-wave planar shock reflection from wedges; square-wave planar shock reflection from cylinders; and spherical blast wave reflection from a planar surface. We restrict ourselves to weak shocks. Shocks with a Mach number of M{sub O} < 1.56 in air or with an overpressure of {Delta}{sub PI} < 25 psi (1.66 bar) under normal ambient conditions are called weak.
Date:
September 7, 1993
Creator:
Reichenbach, H. & Kuhl, A. L.
Object Type:
Article
System:
The UNT Digital Library
Weakly nonlinear dynamics of near-CJ detonation waves
The renewed interest in safety issues for large scale industrial devices and in high speed combustion has driven recent intense efforts to gain a deeper theoretical understanding of detonation wave dynamics. Linear stability analyses, weakly nonlinear bifurcation calculations as well as full scale multi-dimensional direct numerical simulations have been pursued for a standard model problem based on the reactive Euler equations for an ideal gas with constant specific heat capacities and simplified chemical reaction models. Most of these studies are concerned with overdriven detonations. This is true despite the fact that the majority of all detonations observed in nature are running at speeds close to the Chapman-Jouguet (CJ) limit value. By focusing on overdriven waves one removes an array of difficulties from the analysis that is associated with the sonic flow conditions in the wake of a CJ-detonation. In particular, the proper formulation of downstream boundary conditions in the CJ-case is a yet unsolved analytical problem. A proper treatment of perturbations in the back of a Chapman-Jouguet detonation has to account for two distinct weakly nonlinear effects in the forward acoustic wave component. The first is a nonlinear interactionof highly temperature sensitive chemistry with the forward acoustic wave component in …
Date:
January 1, 1993
Creator:
Bdzil, J.B. (Los Alamos National Lab., NM (United States)) & Klein, R. (Technische Hochschule Aachen (Germany). Inst. fuer Technische Mechanik)
Object Type:
Article
System:
The UNT Digital Library
Weakly nonlinear dynamics of near-CJ detonation waves
The renewed interest in safety issues for large scale industrial devices and in high speed combustion has driven recent intense efforts to gain a deeper theoretical understanding of detonation wave dynamics. Linear stability analyses, weakly nonlinear bifurcation calculations as well as full scale multi-dimensional direct numerical simulations have been pursued for a standard model problem based on the reactive Euler equations for an ideal gas with constant specific heat capacities and simplified chemical reaction models. Most of these studies are concerned with overdriven detonations. This is true despite the fact that the majority of all detonations observed in nature are running at speeds close to the Chapman-Jouguet (CJ) limit value. By focusing on overdriven waves one removes an array of difficulties from the analysis that is associated with the sonic flow conditions in the wake of a CJ-detonation. In particular, the proper formulation of downstream boundary conditions in the CJ-case is a yet unsolved analytical problem. A proper treatment of perturbations in the back of a Chapman-Jouguet detonation has to account for two distinct weakly nonlinear effects in the forward acoustic wave component. The first is a nonlinear interactionof highly temperature sensitive chemistry with the forward acoustic wave component in …
Date:
February 1, 1993
Creator:
Bdzil, J. B. & Klein, R.
Object Type:
Article
System:
The UNT Digital Library
Weapons Evaluation Test Laboratory at Pantex: Testing and data handling capabilities of Sandia National Laboratories at the Pantex Plant, Amarillo, Texas
The Weapons Evaluation Test Laboratory (WETL), operated by Sandia Laboratories at the Pantex Plant in Amarillo, Texas, is engaged primarily in the testing of weapon systems in the stockpile or of newly produced weapon systems for the Sandia Surety Assessment Center. However, the WETL`s unique testing equipment and data-handling facilities are frequently used to serve other organizations. Service to other organizations includes performing special tests on weapon components, subassemblies, and systems for purposes such as basic development and specific problem investigation. The WETL staff also sends equipment to other laboratories for specific tests that cannot be performed at Pantex. For example, we modified and sent equipment to Brookhaven National Laboratory for testing with their Neutral Particle Beam. WETL supplied the engineering expertise to accomplish the needed modifications to the equipment and the technicians to help perform many special tests at Brookhaven. A variety of testing is possible within the WETL, including: Accelerometer, decelerometer, and G-switch g-level/closure testing; Neutron generator performance testing; weapon systems developmental tests; weapon system component testing; weapon system failure-mode-duplication tests; simultaneity measurements; environmental extreme testing; parachute deployment testing; permissive action link (PAL) testing and trajectory-sensing signal generator (TSSG) testing. WETL`s existing equipment configurations do not restrict the …
Date:
August 1, 1993
Creator:
Peters, W. R.
Object Type:
Report
System:
The UNT Digital Library