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  Partner: UNT Libraries Government Documents Department
 Decade: 1990-1999
31st Annual Report

31st Annual Report

Date: January 1990
Creator: United States. Advisory Commission on Intergovernmental Relations.
Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document is an annual report.
Contributing Partner: UNT Libraries Government Documents Department
Affordable Spacecraft: Design and Launch Alternatives

Affordable Spacecraft: Design and Launch Alternatives

Date: January 1990
Creator: United States. Congress. Office of Technology Assessment.
Description: This background paper examines several proposals for reducing the costs of spacecraft and other payloads and describes launch systems for implementing them. It is one of a series of products of a broad assessment of space transportation technologies undertaken by OTA at the request of the Senate Committee on Commerce, Science, and Transportation, and the House Committee on Science, Space, and Technology.
Contributing Partner: UNT Libraries Government Documents Department
Alaskan Water for California?: The Subsea Pipeline Option

Alaskan Water for California?: The Subsea Pipeline Option

Date: January 1990
Creator: United States. Congress. Office of Technology Assessment.
Description: This background paper focuses on one technological option for increasing the supply of fresh water to the Southwest-that of building a freshwater subsea pipeline to transport water from Alaska to California. Originally a suggestion by Governor Walter Hickel of Alaska, the proposal has recently attracted attention in southern California.
Contributing Partner: UNT Libraries Government Documents Department
Application of geophysical methods for fracture characterization

Application of geophysical methods for fracture characterization

Date: January 1, 1990
Creator: Lee, K.H.; Majer, E.L.; McEvilly, T.V. & Morrison, H.F.
Description: One of the most crucial needs in the design and implementation of an underground waste isolation facility is a reliable method for the detection and characterization of fractures in zones away from boreholes or subsurface workings. Geophysical methods may represent a solution to this problem. If fractures represent anomalies in the elastic properties or conductive properties of the rocks, then the seismic and electrical techniques may be useful in detecting and characterizing fracture properties. 7 refs., 3 figs.
Contributing Partner: UNT Libraries Government Documents Department
The application of vertical seismic profiling and cross-hole tomographic imaging for fracture characterization at Yucca Mountain

The application of vertical seismic profiling and cross-hole tomographic imaging for fracture characterization at Yucca Mountain

Date: January 1, 1990
Creator: Majer, E.L.; Peterson, J.E.; Tura, M.A. & McEvilly, T.V.
Description: In order to obtain the necessary characterization for the storage of nuclear waste, much higher resolution of the features likely to affect the transport of radionuclides will be required than is normally achieved in conventional surface seismic reflection used in the exploration and characterization of petroleum and geothermal resources. Because fractures represent a significant mechanical anomaly seismic methods using are being investigated as a means to image and characterize the subsurface. Because of inherent limitations in applying the seismic methods solely from the surface, state-of-the-art borehole methods are being investigated to provide high resolution definition within the repository block. Therefore, Vertical Seismic Profiling (VSP) and cross-hole methods are being developed to obtain maximum resolution of the features that will possible affect the transport of fluids. Presented here will be the methods being developed, the strategy being pursued, and the rational for using VSP and crosshole methods at Yucca Mountain. The approach is intended to be an integrated method involving improvements in data acquisition, processing, and interpretation as well as improvements in the fundamental understanding of seismic wave propagation in fractured rock. 33 refs., 4 figs.
Contributing Partner: UNT Libraries Government Documents Department
An Asymmetric B-Meson Factory at PEP

An Asymmetric B-Meson Factory at PEP

Date: January 1, 1990
Creator: Garren, A.A.; Chattopadhyay, S.; Chin, Y.; Oddone, P.J.; Zisman, Michael S.; Donald, M. et al.
Description: A preliminary design for a B-factory has been made using asymmetric collisions between positrons in the PEP storage ring and electrons in a new, low-energy ring. The design utilizes small-aperture, permanent-magnet quadrupoles close to the interaction point (IP). Optimization of optical and beam parameters at the IP will be discussed, as well as the lattice design of the interaction region and of the rings.
Contributing Partner: UNT Libraries Government Documents Department
Building of a conceptual model at UE25-c hole complex

Building of a conceptual model at UE25-c hole complex

Date: January 1, 1990
Creator: Karasaki, K.; Landsfeld, M. & Grossenbacher, K.
Description: US Geological Survey and Lawrence Berkeley Laboratory are attempting to construct a conceptual model of the UE25-c hole complex. An interdisciplinary approach is discussed where all the available data are integrated. Site geology, borehole geophysics and hydraulic test results at UE25-c hole complex suggest that groundwater flow may be controlled by fractures and faults. Significant clusters of fractures in the C-holes are perpendicular to bedding and may be cooling cracks or may be tectonically induced. Unresolved evidence indicates that a fault may intersect the C-holes. For these reasons a porous medium approximation of the rock in the saturated zone at the scale of a well test may be inappropriate. Instead, an Equivalent Discontinuum Model is proposed to model the UE25-c complex hydrology. EDM does not reproduce every geometrical detail of the real system, but instead, attempts to reproduce the observed behavior of the fracture system while preserving the inherent discontinuous nature of the system. 6 refs., 7 figs.
Contributing Partner: UNT Libraries Government Documents Department
Changing public attitudes on governments and taxes, 1990

Changing public attitudes on governments and taxes, 1990

Date: 1990
Creator: United States. Advisory Commission on Intergovernmental Relations.
Description: The ACIR Library is composed of publications that study the interactions between different levels of government. This document addresses changing public attitudes on governments and taxes.
Contributing Partner: UNT Libraries Government Documents Department
Columbia River Basin Fish and Wildlife Program Annual Implementation Work Plan for Fiscal Year 1990.

Columbia River Basin Fish and Wildlife Program Annual Implementation Work Plan for Fiscal Year 1990.

Date: January 1990
Creator: United States. Bonneville Power Administration.
Description: The Columbia River Basin Fish and Wildlife Program (Program) was developed by the Northwest Power Planning Council (Council) in accordance with Public Law 96-501, the Pacific Northwest Electric Power Planning and Conservation Act (Act). The purpose of the Program is to guide the Bonneville Power Administration (BPA) and other Federal agencies in carrying out their responsibilities to protect, mitigate, and enhance fish and wildlife of the Columbia River Basin. The Act explicitly gives BPA the authority and responsibility to use the BPA fund for these ends, to the extent that fish and wildlife are affected by the development and operation of hydroelectric generation in the Columbia River Basin. This document presents BPA's plans for implementing the Program during Fiscal Year (FY) 1990. The Columbia River Basin Fish and Wildlife Program Annual Implementation Work Plan (AIWP) reflects the primary goals of the Council's Action Plan (Section 1400 of the Program): to provide a solid, timely, and focused basis for budgeting and planning. In addition, the AIWP provides a means to judge progress and the success of Program implementation. The FY 1990 AIWP also follows the outline developed by the Policy Review Group (PRG) during Step 1 of initial cycle of the ...
Contributing Partner: UNT Libraries Government Documents Department
Combined analytical/numerical approaches to solving fluid flow problems in the unsaturated zone at Yucca Mountain

Combined analytical/numerical approaches to solving fluid flow problems in the unsaturated zone at Yucca Mountain

Date: January 1, 1990
Creator: Zimmerman, R.W. & Bodvarsson, G.S.
Description: Various analytical and numerical approaches are presented for the study of unsaturated flow processes in the vicinity of the Yucca Mountain, Nevada, the proposed site of an underground radioactive waste repository. Approximate analytical methods are used to study absorption of water from a saturated fracture into the adjacent rock. These solutions are incorporated into a numerical simulator as fracture/matrix interaction terms to treat problems such as flow along a fracture with transverse leakage into the matrix. An automatic fracture/matrix mesh generator is described; it allows for more efficient mesh generation for fractured/porous media, and consequently leads to large savings in computational time and cost. 21 refs., 6 figs.
Contributing Partner: UNT Libraries Government Documents Department
Comparison of Two Freshwater Turtle Species as Monitors of Environmental Contamination

Comparison of Two Freshwater Turtle Species as Monitors of Environmental Contamination

Date: January 1, 1990
Creator: Meyers-Schone, L.
Description: Two species of turtles that occupy different ecological niches were compared for their usefulness as monitors of contamination in freshwater ecosystems. Trachemvs scrinta (Agassiz) (yellow-bellied slider) and Chelvdra sernentina (Linnaeus) (common snapping turtle) were selected for comparison based on species abundance and differences in food habits and sediment contact. A review of the literature on contaminants in turtles and results of preliminary surveys conducted at the field sites, which are included in this study, were used to direct and focus this research project. White Oak Lake, a settling basin for low-level radioactive and nonradioactive contaminants, and Bearden Creek Embayment, an uncontaminated reference site upriver, were used as study sites in the investigation of turtles as indicators of chemical contamination. Turtles were analyzed for concentrations of strontium-go, cesium-137, cobalt 60, and mercury in specific target tissues, and for single-stranded DNA breaks, a non-specific indicator of possible exposure to genotoxic agents in the environment. Significantly higher concentrations of {sup 90}Sr, {sup 137}Cs, {sup 60}Co, and mercury were detected in turtles from White Oak Lake than in turtles from the reference site. In addition, turtles from White Oak Lake contained a significantly greater amount of DNA damage than those from the reference site. ...
Contributing Partner: UNT Libraries Government Documents Department
Coupled Thermal and Electrical Analysis of Obstructed RTGs

Coupled Thermal and Electrical Analysis of Obstructed RTGs

Date: January 1, 1990
Creator: Schock, Alfred; Noravian, Heros & Or, Chuen T.
Description: A Radioisotope Thermoelectric Generator (RTG) with an unsymmetrically obstructed heat rejection path can have significant axial and circumferential variations in the temperatures, currents, and voltages of its thermoelectric couple network. The present paper describes a methodology for analyzing the thermal and electrical performance of such an RTG, and the development of a computer code for implementing that emthodology. The code derives coupled solutions of the RTG's thermal, thermoelectric, and electrical equations. It accounts for the Peltier effect, Ohmic heating, and the Thomson effect, and treats the electrical power produced in each couple as an effective heat sink. It satisfies the condition that all parallel couples produce the same voltage, and that all series-connected couple groups produce the same current. Finally, the paper illustrates the use of the code by applying it to the detailed analysis of the RTGs for the CRAF and Cassini missions. In each of these, there are two adjacent RTGs which are obstructed by each other and by the nearby spacecraft. The results of the analysis will be used by the spacecraft designers in selecting the location, orientation, and spacing of the two RTGs. There are two copies in the file.
Contributing Partner: UNT Libraries Government Documents Department
Designing Equipment for Use in Gamma Radiation Environments

Designing Equipment for Use in Gamma Radiation Environments

Date: January 1, 1990
Creator: Vandergriff, K.U.
Description: High levels of gamma radiation are known to cause degradation in a variety of materials and components. When designing systems to operate in a high radiation environment, special precautions and procedures should be followed. This report (1) outlines steps that should be followed in designing equipment and (2) explains the general effects of radiation on various engineering materials and components. Much information exists in the literature on radiation effects upon materials. However, very little information is available to give the designer a step-by-step process for designing systems that will be subject to high levels of gamma radiation, such as those found in a nuclear fuel reprocessing facility. In this report, many radiation effect references are relied upon to aid in the design of components and systems.
Contributing Partner: UNT Libraries Government Documents Department
Diffusive release of radionuclides into saturated and unsaturated tuff

Diffusive release of radionuclides into saturated and unsaturated tuff

Date: January 1, 1990
Creator: Sadeghi, M.M.; Lee, W.W.L.; Pigford, T.H. & Chambre, P.L.
Description: In the proposed Yucca Mountain repository, packages of high-level waste are separated from surrounding unsaturated rock by a 2-cm air-gap annulus. If a waste package contacts the surrounding rock, if the annulus becomes filled with rock and rubble, or if the rock becomes saturated, there can exist pathways for release of dissolved radionuclides by liquid diffusion. We have applied the analytical solutions for time-dependent mass transfer of dissolved species through porous rock to predict the time-dependent release rates of key radionuclides. The expected ground-water velocities are so low that mass-transfer is predicted to occur predominantly by molecular diffusion in pore liquid. Conservatively, we neglect mass-transfer resistance from fuel cladding and failed metal containers. 6 refs., 3 figs.
Contributing Partner: UNT Libraries Government Documents Department
DIGITAL SPALL RADIOGRAPH ANALYSIS SYSTEM

DIGITAL SPALL RADIOGRAPH ANALYSIS SYSTEM

Date: January 1, 1990
Creator: LATA, CURTIS L. HARRIS -
Description: This report describes progress on work to develop a cost effective, rapid response system for measuring Technology Assessment National Laboratory. momentum and kinetic energy of span for the Advanced Center (ATAC) Armor/Anti-Armor (As) program at Los Alamos The system will exploit data contained in two sets of simultaneous co-planar flash radiographs taken along the center line of anticipated span motion. Data contained in each set (which is proportional to the mass and z-number of the span material intersected by the exposing x-ray at each point) is digitized and used to construct a three dimensional model (called the reconstructed span image) that approximates the original span cloud. From the model the mass of span fragments is computed. The two sets of radiographs, separated in time, represent the span configuration at two instants of time. Span fragments from the first instant are matched with those from the second instant to determine velocity. Evaluation of the fidelity of candidate reconstruction algorithms is the highest priority task in. this development program for the obvious reason that the efficacy of the projected span analysis system depends upon the fidelity of the reconstruction techniques.
Contributing Partner: UNT Libraries Government Documents Department
Digital spall radiograph analysis system: Report on simulated three- dimensional digital spall image reconstruction fidelity

Digital spall radiograph analysis system: Report on simulated three- dimensional digital spall image reconstruction fidelity

Date: January 1, 1990
Creator: Harris, C.L.
Description: This report describes progress on work to develop a cost effective, rapid response system for measuring momentum and kinetic energy of spall for the Advanced Technology Assessment Center (ATAC) Armor/Anti-Armor (A{sup 3}) program at Los Alamos National Laboratory. The system will exploit data contained in two sets of simultaneous co-planar flash radiographs taken along the center line of anticipated spall motion. Data contained in each set (which is proportional to the mass and z- number of the spall material intersected by the exposing x-ray at each point) is digitized and used to construct a three dimensional model (called the reconstructed spall image) that approximates the original spall cloud. From the model the mass of spall fragments is computed. The two sets of radiographs, separated in time, represent the spall configuration at two instants of time. Spall fragments from the first instant are matched with those from the second instant to determine velocity. Evaluation of the fidelity of candidate reconstruction algorithms is the highest priority task in this development program for the obvious reason that the efficacy of the projected spall analysis system depends upon the fidelity of the reconstruction techniques. The purpose of this document is to report the results ...
Contributing Partner: UNT Libraries Government Documents Department
Drill-back studies examine fractured, heated rock

Drill-back studies examine fractured, heated rock

Date: January 1, 1990
Creator: Wollenberg, H.A.; Flexser, S. & Myer, L.R.
Description: To investigate the effects of heating on the mineralogical, geochemical, and mechanical properties of rock by high-level radioactive waste, cores are being examined from holes penetrating locations where electric heaters simulated the presence of a waste canister, and from holes penetration natural hydrothermal systems. Results to date indicate the localized mobility and deposition of uranium in an open fracture in heated granitic rock, the mobility of U in a breccia zone in an active hydrothermal system in tuff, and the presence of U in relatively high concentration in fracture-lining material in tuff. Mechanical -- property studies indicate that differences in compressional- and shear-wave parameters between heated and less heated rock can be attributed to differences in the density of microcracks. Emphasis has shifted from initial studies of granitic rock at Stripa, Sweden to current investigations of welded tuff at the Nevada Test Site. 7 refs., 8 figs.
Contributing Partner: UNT Libraries Government Documents Department
The effective diffusion coefficient for porous rubble

The effective diffusion coefficient for porous rubble

Date: January 1, 1990
Creator: Sadeghi, M.M.; Lee, W.W.-L.; Pigford, T.H. & Chambre, P.L.
Description: Each waste package in the proposed Yucca Mountain repository is to be separated from surrounded unsaturated rock by a 2-cm air gap annulus. However, if the annulus becomes filled with rock and rubble, there can exist pathways for diffusive release of radionuclides through pore liquid, even if the repository remains unsaturated. The effective diffusion coefficient for radionuclide release through pore liquid in a rubble bed depends on the porosity and moisture content of rubble material and on the geometry and contact area of individual pieces of rubble. Here we present a theoretical analysis of the effective diffusion coefficient for a bed of rubble spheres. The results give a rough indication of the magnitude of the effective diffusion coefficient, and the analysis identifies the parameters that will affect experimental measurements of mass transfer through unsaturated rubble. 3 refs., 1 fig.
Contributing Partner: UNT Libraries Government Documents Department
Eleventh annual U.S. DOE low-level radioactive waste management conference: Executive summary, opening plenary, technical session summaries, and attendees

Eleventh annual U.S. DOE low-level radioactive waste management conference: Executive summary, opening plenary, technical session summaries, and attendees

Date: January 1990
Creator: unknown
Description: The conference consisted of ten technical sessions, with three sessions running simultaneously each day. Session topics included: regulatory updates; performance assessment;understanding remedial action efforts; low-level waste strategy and planning (Nuclear Energy); low-level waste strategy and planning (Defense); compliance monitoring; decontamination and decommissioning; waste characterization; waste reduction and minimization; and prototype licensing application workshop. Summaries are presented for each of these sessions.
Contributing Partner: UNT Libraries Government Documents Department
FCC Record, Cumulative Index, Volumes 1-5

FCC Record, Cumulative Index, Volumes 1-5

Date: 1990~
Creator: United States. Federal Communications Commission.
Description: Index of the first five volumes of a biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Contributing Partner: UNT Libraries Government Documents Department
FCC Record, Volume 5, No. 1, Pages 1 to 258, January 2 - January 12, 1990

FCC Record, Volume 5, No. 1, Pages 1 to 258, January 2 - January 12, 1990

Date: January 1990
Creator: United States. Federal Communications Commission.
Description: Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Contributing Partner: UNT Libraries Government Documents Department
FCC Record, Volume 5, No. 2, Pages 259 to 555, January 16 - January 26, 1990

FCC Record, Volume 5, No. 2, Pages 259 to 555, January 16 - January 26, 1990

Date: January 1990
Creator: United States. Federal Communications Commission.
Description: Biweekly, comprehensive compilation of decisions, reports, public notices, and other documents of the U.S. Federal Communications Commission.
Contributing Partner: UNT Libraries Government Documents Department
Fixed Mask Assembly Research for APS Insertion Devices

Fixed Mask Assembly Research for APS Insertion Devices

Date: January 1990
Creator: Kuzay, Tuncer M.
Description: The Fixed Mask Assembly (FMA) is the first component to interact with the photon beam. Two sets of a pair of FMA channels, vertically and horizontally disposed, contain the beam rather than define it. They are subject to very large heat fluxes during containment. In current practice, the FMA channels are made of heavy, seamless copper, have rectangular cross-sections, and are cooled internally with water. Channels are set at grazing angles ranging from 1 to 6 degrees with respect to the beam, depending on the type of insertion device. APS insertion devices will impose higher heat fluxes on FMAs. Therefore, a need exists to improve the FMA engineering, keeping in the mind the current design criteria and philosophy of FMAs. Preliminary analysis of current heat transfer practice indicates that the major resistance to heat transfer is on the coolant side. Therefore, FMA cooling would benefit from enhanced heat transfer on the coolant side. With this principle in mind, an experimental program has been undertaken to explore the feasibility of using high-performance copper tube configurations which are expected to yield heat transfer coefficients, h, '' in single phase flow systems 2 to 5() times higher than equivalent plain tubes. In this ...
Contributing Partner: UNT Libraries Government Documents Department
A Hamiltonian-Free Description of Single Particle Dynamics for Hopelessly Complex Periodic Systems

A Hamiltonian-Free Description of Single Particle Dynamics for Hopelessly Complex Periodic Systems

Date: January 1, 1990
Creator: Forest, E.
Description: We develop a picture of periodic systems which does not rely on the Hamiltonian of the system but on maps between a finite number of time locations. Moser or Deprit-like normalizations are done directly on the maps thereby avoiding the complex time-dependent theory. We redefine linear and nonlinear Floquet variables entirely in terms of maps. This approach relies heavily on the Lie representation of maps introduced by Dragt and Finn. One might say that although we do not use the Hamiltonian in the normalization transformation, we are using Lie operators which are themselves, in some sense, pseudo-Hamiltonians for the maps they represent. Our techniques find application in accelerator dynamics or in any field where the Hamiltonian is periodic but hopelessly complex, such as magnetic field design in stellarators.
Contributing Partner: UNT Libraries Government Documents Department
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