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  Partner: UNT Libraries Government Documents Department
 Decade: 1990-1999
 Year: 1991
D-0 End Calorimeter Warm Tube/TeV Dry Air Purge

D-0 End Calorimeter Warm Tube/TeV Dry Air Purge

Date: August 14, 1991
Creator: Leibfritz, J. R.
Description: This Engineering Note studies the design of the Dry Air Purge that is going to flow through the Warm Tube of the End Calorimeter of the D-O Calorimeter. The Tev tubes through the E.C. can be thought of as a cluster of concentric tubes: The Tev tube, the warm (vacuum vessel) tube, 15 layers of superinsulation, the cold (argon vessel) tube, and the Inner Hadronic center support tube. The Dry Air Purge will involve flowing Dry Air through the annular region between the Warm Tube and the Tev Beam Pipe. This air flow is intended to prevent condensation from forming in this region which could turn to ice under cryogenic temperatures. Any ice formed in this gap, could cause serious problems when these tubes are moved. The Air will flow through a Nylon Tube Fitting -1/4-inch I.D. to 1/8-inch male pipe thread (Cole Palmer YB-06465-15) see Drawing MC-295221 (Appendix A). This fitting will be attached to the Nylon 2-inch Tube-Wiper and Seal Assembly which is clamped to the ends of the Warm Tube (Appendix A). This note includes drawings and calculations that explain the setup of the Dry Air Purge and give the required information on the pressure drops through ...
Contributing Partner: UNT Libraries Government Documents Department
1989 Walker Branch Watershed Surveying and Mapping Including a Guide to Coordinate Transformation Procedures

1989 Walker Branch Watershed Surveying and Mapping Including a Guide to Coordinate Transformation Procedures

Date: January 1, 1991
Creator: Timmins, S.
Description: Walker Branch Watershed is a forested, research watershed marked throughout by a 264 ft grid that was surveyed in 1967 using the Oak Ridge National Laboratory (X-10) coordinate system. The Tennessee Valley Authority (TVA) prepared a contour map of the watershed in 1987, and an ARC/INFO{trademark} version of the TVA topographic map with the X-10 grid superimposed has since been used as the primary geographic information system (GIS) data base for the watershed. However, because of inaccuracies observed in mapped locations of some grid markers and permanent research plots, portions of the watershed were resurveyed in 1989 and an extensive investigation of the coordinates used in creating both the TVA map and ARC/INFO data base and of coordinate transformation procedures currently in use on the Oak Ridge Reservation was conducted. They determined that the positional errors resulted from the field orientation of the blazed grid rather than problems in mapmaking. In resurveying the watershed, previously surveyed control points were located or noted as missing, and 25 new control points along the perimeter roads were surveyed. In addition, 67 of 156 grid line intersections (pegs) were physically located and their positions relative to mapped landmarks were recorded. As a result, coordinates ...
Contributing Partner: UNT Libraries Government Documents Department
1991 annual report to the National Science Foundation

1991 annual report to the National Science Foundation

Date: December 1, 1991
Creator: unknown
Description: The Geometry Center research program has a number of different aspects, most of which involve longer term commitments, such as, development of research software, teams of individuals visually exploring mathematical structures and sponsoring of workshops. The Center is built on the research programs of its faculty. These programs have flourished and interacted under the Center umbrella. There are many interconnections and commonalities between the fields represented. Here, a summary of the research work of each of the faculty members. Some of the research topics are geometric calculus of variations, group theory, geometric algorithms, and computer graphics.
Contributing Partner: UNT Libraries Government Documents Department
1991 Annual report to the National Science Foundation

1991 Annual report to the National Science Foundation

Date: December 1, 1991
Creator: unknown
Description: This report contains discussions by researcher of the center on the computation and visualization of geometric structures. Most of the research involves the following: development of research software; exploration of mathematical structures; and computational crystal growth.
Contributing Partner: UNT Libraries Government Documents Department
1991 Technical progress report of the University of South Carolina`s High Energy Physics Group, February 1990--July 1991

1991 Technical progress report of the University of South Carolina`s High Energy Physics Group, February 1990--July 1991

Date: December 31, 1991
Creator: unknown
Description: The high energy physics group at the University of South Carolina includes five teaching faculty members, one research faculty member, and five graduate students. Profs. Childers, Darden, and Wilson devote most of their research effort to Fermilab experiment E789, which is designed to observe charmless two-body decays of b-flavored mesons and baryons. Prof. Wilson works on Fermilab experiment E687 which studies charm physics in the wide-band photon beam. Profs. Rosenfeld and Wang participate in the AMY collaboration, which studies electron-positron interactions using the TRISTAN collider at KEK. Prof. Rosenfeld and one student collaborate with personnel from KEK and INS, Tokyo, on an experiment to detect a 17 keV neutrino in the {beta}-decay spectrum of {sup 63}Ni. Members of the group also participate in Fermilab Proposal P803 which will search for the oscillation of muon neutrino to tau neutrino with sensitivity better than a factor of 40 than previously achieved and in Superconducting Super Collider activities which include the development of an imaging preradiator. A brief discussion is given on progress made for each program.
Contributing Partner: UNT Libraries Government Documents Department
The 1992 World Administrative Radio Conference: Issues for U.S. International Spectrum Policy

The 1992 World Administrative Radio Conference: Issues for U.S. International Spectrum Policy

Date: November 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This report examines the U.S. preparations process for WARC-92, highlighting efforts to integrate the needs and concerns of various interest groups. It also reviews the forces and trends affecting the United States as it approaches WARC-92, and is intended to inform future congressional oversight of the domestic and international radio communication policy process.
Contributing Partner: UNT Libraries Government Documents Department
32nd Annual Report

32nd Annual Report

Date: January 1991
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
Accelerator Change Due to Linear Coupling – Possible Correction Scheme of Emittance Growth

Accelerator Change Due to Linear Coupling – Possible Correction Scheme of Emittance Growth

Date: September 1, 1991
Creator: V., Garczynski
Description: .
Contributing Partner: UNT Libraries Government Documents Department
Actinide transport in Topopah Spring Tuff: Pore size, particle size, and diffusion

Actinide transport in Topopah Spring Tuff: Pore size, particle size, and diffusion

Date: April 1, 1991
Creator: Buchholtz ten Brink, M.; Phinney, D.L. & Smith, D.K.
Description: Diffusive transport rates for aqueous species in a porous medium are a function of sorption, molecular diffusion, and sample tortuosity. With heterogeneous natural samples, an understanding of the effect of multiple transport paths and sorption mechanisms is particularly important since a small amount of radioisotope traveling via a faster-than-anticipated transport path may invalidate the predictions of transport codes which assume average behavior. Static-diffusion experiments using aqueous {sup 238}U tracer in tuff indicated that U transport was faster in regions of greater porosity and that apparent diffusion coefficients depended on the scale (m or {mu}m) over which concentration gradients were measured in Topopah Spring Tuff. If a significant fraction of actinides in high-level waste are released to the environment in forms that do not sorb to the matrix, they may be similarly transported along fast paths in porous regions of the tuff. To test this, aqueous diffusion rates in tuff were measured for {sub 238}U and {sub 239}Pu leached from doped glass. Measured transport rates and patterns were consistent in both systems with a dual-porosity transported moeld. In addition, filtration or channelling of actinides associated with colloidal particles may significantly affect the radionuclide transport rate in Topopah Spring tuff. 9 refs., ...
Contributing Partner: UNT Libraries Government Documents Department
Activities and Operations of Argonne's Advanced Computing Research Facility : February 1990 through April 1991

Activities and Operations of Argonne's Advanced Computing Research Facility : February 1990 through April 1991

Date: May 1991
Creator: Pieper, Gail W.
Description: This report reviews the activities and operations of the Advanced Computing Research Facility (ACRF) from February 1990 through April 1991. The ACRF is operated by the Mathematics and Computer Science Division at Argonne National Laboratory. The facility's principal objective is to foster research in parallel computing. Toward this objective, the ACRF operates experimental advanced computers, supports investigations in parallel computing, and sponsors technology transfer efforts to industry and academia.
Contributing Partner: UNT Libraries Government Documents Department
Adjusting to a New Security Environment: The Defense Technology and Industrial Base Challenge

Adjusting to a New Security Environment: The Defense Technology and Industrial Base Challenge

Date: February 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This background paper, OTA sought information and advice from a broad spectrum of knowledgeable individuals and organizations whose contributions are gratefully acknowledged. As with all OTA studies, the content of this background paper is the sole responsibility of the Office of Technology Assessment and does not necessarily represent the views of our advisers and reviewers.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 1: Summary and Policy Options

Adolescent Health, Volume 1: Summary and Policy Options

Date: April 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This OTA’s report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas. In addition, OTA was asked to: 1 ) identify risk and protective factors for adolescent health problems and integrate national data in order to understand the clustering of specific adolescent problems, 2) evaluate options in the organization of health services and technologies available to adolescents (including accessibility and financing), 3) assess options in the conduct of national health surveys to improve collection of adolescent health statistics, and 4) identify gaps in research on the health and behavior of adolescents.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 2: Background and the Effectiveness of Selected Prevention and Treatment Services

Adolescent Health, Volume 2: Background and the Effectiveness of Selected Prevention and Treatment Services

Date: October 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: The report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas.
Contributing Partner: UNT Libraries Government Documents Department
Adolescent Health, Volume 3: Crosscutting Issues in the Delivery of Health and Related Services

Adolescent Health, Volume 3: Crosscutting Issues in the Delivery of Health and Related Services

Date: June 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: OTA’s report responds to the request of numerous Members of Congress to review the physical, emotional, and behavioral health status of contemporary American adolescents, including adolescents in groups who might be more likely to be in special need of health-related interventions: adolescents living in poverty, adolescents from racial and ethnic minority groups, Native American adolescents, and adolescents in rural areas.
Contributing Partner: UNT Libraries Government Documents Department
Advanced photon source proposal for upgrading the radiation safety of x-ray labs

Advanced photon source proposal for upgrading the radiation safety of x-ray labs

Date: July 1, 1991
Creator: Friedman, N.
Description: There are two adjacent x-ray labs in building 360, each having two entrance doors. Lab A240 has two x-ray machines and lab A248 has one. All machines are equipped with sliding safety windows and microswitches to monitor the state of the windows - open or closed. Two modes of operation are possible. (1) Secure Mode in which all safety windows are closed as indicated by the microswitches. This satisfies the interlock system, allowing the high voltage power supply to be turned on. (2) Bypass Mode in which the interlock system is overridden by a key-controlled selector switch and high voltage can be turned on with machine hutch window(s) open. The bypass mode is potentially unsafe because it is possible for an operator to leave a running instrument unattended while the windows are open. Thus, it is possible for someone entering the lab to expose themselves to x-rays.
Contributing Partner: UNT Libraries Government Documents Department
Aerial photographic interpretation of lineaments and faults in late cenozoic deposits in the Eastern part of the Benton Range 1:100,000 quadrangle and the Goldfield, Last Chance Range, Beatty, and Death Valley Junction 1:100,000 quadrangles, Nevada and California

Aerial photographic interpretation of lineaments and faults in late cenozoic deposits in the Eastern part of the Benton Range 1:100,000 quadrangle and the Goldfield, Last Chance Range, Beatty, and Death Valley Junction 1:100,000 quadrangles, Nevada and California

Date: September 1, 1991
Creator: Reheis, M.C. & Noller, J.S.
Description: Lineaments and faults in Quaternary and late Tertiary deposits in the southern part of the Walker Lane are potentially active and form patterns that are anomalous with respect to the typical fault patterns in most of the Great Basin. Little work has been done to identify and characterize these faults, with the exception of those in the Death Valley-Furnace Creek (DVFCFZ) fault system and those in and near the Nevada Test Site. Four maps at a scale of 1:100,000 summarize the existing knowledge about these lineaments and faults based on extensive aerial-photo interpretation, limited field investigations, and published geologic maps. The lineaments and faults in all four maps can be divided geographically into two groups. The first group includes west- to north-trending lineaments and faults associated with the DVFCFZ and with the Pahrump fault zone in the Death Valley Junction quadrangle. The second group consists of north- to east-northeast-trending lineaments and faults in a broad area that lies east of the DVFCFZ and north of the Pahrump fault zone. Preliminary observations of the orientations and sense of slip of the lineaments and faults suggest that the least principle stress direction is west-east in the area of the first group and ...
Contributing Partner: UNT Libraries Government Documents Department
Aerial photographic interpretation of lineaments and faults in late Cenozoic deposits in the eastern parts of the Saline Valley 1:100, 000 quadrangle, Nevada and California, and the Darwin Hills 1:100, 000 quadrangle, California

Aerial photographic interpretation of lineaments and faults in late Cenozoic deposits in the eastern parts of the Saline Valley 1:100, 000 quadrangle, Nevada and California, and the Darwin Hills 1:100, 000 quadrangle, California

Date: September 1, 1991
Creator: Reheis, M.C.
Description: Faults and fault-related lineaments in Quaternary and late Tertiary deposits in the southern part of the Walker Lane are potentially active and form patterns that are anomalous compared to those in most other areas of the Great Basin. Two maps at a scale of 1:100,000 summarize information about lineaments and faults in the area around and southwest of the Death Valley-Furnace Creek fault system based on extensive aerial-photo interpretation, limited field interpretation, limited field investigations, and published geologic maps. There are three major fault zones and two principal faults in the Saline Valley and Darwin Hills 1:100,000 quadrangles. (1) The Death Valley-Furnace Creek fault system and (2) the Hunter Mountain fault zone are northwest-trending right-lateral strike-slip fault zones. (3) The Panamint Valley fault zone and associated Towne Pass and Emigrant faults are north-trending normal faults. The intersection of the Hunter Mountain and Panamint Valley fault zones is marked by a large complex of faults and lineaments on the floor of Panamint Valley. Additional major faults include (4) the north-northwest-trending Ash Hill fault on the west side of Panamint Valley, and (5) the north-trending range-front Tin Mountain fault on the west side of the northern Cottonwood Mountains. The most active faults ...
Contributing Partner: UNT Libraries Government Documents Department
Aeromagnetic map of the Beatty quadrangle, Nevada-California

Aeromagnetic map of the Beatty quadrangle, Nevada-California

Date: December 31, 1991
Creator: Glen, J.M. & Ponce, D.A.
Description: An aeromagnetic map of the Beatty Quadrangle, Nevada-California has been prepared from six separate aeromagnetic surveys. This report contains the map. (JL)
Contributing Partner: UNT Libraries Government Documents Department
Agricultural Commodities as Industrial Raw Materials

Agricultural Commodities as Industrial Raw Materials

Date: June 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This report examines potential new crops and traditional crops for industrial uses including replacements for petroleum and imported strategic materials; replacements for imported newsprint, wood rosins, rubbers, and oils; and degradable plastics. This report finds that, in the absence of additional and more comprehensive policies, developing industrial uses for agricultural commodities alone is unlikely to revitalize rural economies and solve the problems of American agriculture.
Contributing Partner: UNT Libraries Government Documents Department
Air-injection field tests to determine the effect of a heat cycle on the permeability of welded tuff

Air-injection field tests to determine the effect of a heat cycle on the permeability of welded tuff

Date: October 1, 1991
Creator: Lee, K.H. & Ueng, Tzou-Shin
Description: As part of a series of prototype tests conducted in preparation for site characterization of the potential nuclear-waste repository site at Yucca Mountain, Nevada, air-injection tests were conducted in the welded tuffs in G-Tunnel at the Nevada Test Site. The objectives were to characterize the permeability of the highly fractured tuff around a horizontal heater emplacement borehole, and to determine the effect of a heating and cooling cycle on the rock-mass permeability. Air was injected into packed-off intervals along the heater borehole. The bulk permeability of the rock adjacent to the test interval and the aperture of fractures intersecting the interval were computed from the air-flow rate, temperature, and pressure at steady state. The bulk permeability of intervals along with borehole varied from a minimum of 0.08 D to a maximum of over 144 D and the equivalent parallel-plate apertures of fractures intersecting the borehole varied from 70 to 589 {mu}m. Higher permeabilities seemed to correlate spatially with the mapped fractures. The rock was then heated for a period of 6.5 months with an electrical-resistive heater installed in the borehole. After heating, the rock was allowed to cool down to the ambient temperature. The highest borehole wall temperature measured was ...
Contributing Partner: UNT Libraries Government Documents Department
Allied Burdensharing in Transition: Status and Implications for the United States

Allied Burdensharing in Transition: Status and Implications for the United States

Date: October 25, 1991
Creator: Pagliano, Gary J
Description: This report describes recent changes in U.S. burdensharing relationships with NATO, Japan and South Korea and, in the process, identifies some implications for U.S. foreign policy.
Contributing Partner: UNT Libraries Government Documents Department
American College of Nuclear Physics 1991 DOE day symposium: Aids and nuclear medicine

American College of Nuclear Physics 1991 DOE day symposium: Aids and nuclear medicine

Date: December 31, 1991
Creator: unknown
Description: Since first described in 1981, the acquired immunodeficiency syndrome (AIDS) has become the medical dilemma of the century. AIDS retrovirus, and the economic consequences of this exposure are staggering. AIDS has been the topic of conferences and symposia worldwide. This symposium, to be held on January 25, 1991, at the 17th Annual Meeting and Scientific Sessions of the American College of Nuclear Physicians, will expose the Nuclear Medicine Physicians/Radiologists to their role in the diagnosis of AIDS, and will educate them on the socio-economic and ethical issues related to this problem. In addition, the Nuclear Medicine Physicians/Radiologists must be aware of their role in the management of their departments in order to adequately protect the health care professionals working in their laboratories. Strategies are currently being developed to control the spread of bloodborne diseases within the health care setting, and it is incumbent upon the Nuclear Medicine community to be aware of such strategies.
Contributing Partner: UNT Libraries Government Documents Department
American Military Power: Future Needs, Future Choices

American Military Power: Future Needs, Future Choices

Date: October 1991
Creator: United States. Congress. Office of Technology Assessment.
Description: This background paper outlines some of the issues of importance for making choices about the future nature and role of U.S. armed forces, and suggests how these choices will affect defense base requirements. The final report of the assessment, to be delivered in the spring of 1992, will address specific policy options arising from the strategic choices and tactical decisions discussed here.
Contributing Partner: UNT Libraries Government Documents Department
An analysis of a joint shear model for jointed media with orthogonal joint sets; Yucca Mountain Site Characterization Project

An analysis of a joint shear model for jointed media with orthogonal joint sets; Yucca Mountain Site Characterization Project

Date: October 1, 1991
Creator: Koteras, J.R.
Description: This report describes a joint shear model used in conjunction with a computational model for jointed media with orthogonal joint sets. The joint shear model allows nonlinear behavior for both joint sets. Because nonlinear behavior is allowed for both joint sets, a great many cases must be considered to fully describe the joint shear behavior of the jointed medium. An extensive set of equations is required to describe the joint shear stress and slip displacements that can occur for all the various cases. This report examines possible methods for simplifying this set of equations so that the model can be implemented efficiently form a computational standpoint. The shear model must be examined carefully to obtain a computationally efficient implementation that does not lead to numerical problems. The application to fractures in rock is discussed. 5 refs., 4 figs.
Contributing Partner: UNT Libraries Government Documents Department
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