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Fish Passage Through a Simulated Horizontal Bulb Turbine Pressure Regime: A Supplement to"Laboratory Studies of the Effects of Pressure and Dissolved Gas Supersaturation on Turbine-Passed Fish"
Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low head dams. The results were compared to results from previous test series. Migratory and resident fish in the Columbia River Basin are exposed to stresses associated with hydroelectric power production, including pressure changes during turbine passage. The responses of fall chinook salmon and bluegill sunfish to rapid pressure change was investigated at the Pacific Northwest National Laboratory. Previous test series evaluated the effects of passage through a vertical Kaplan turbine under the"worst case" pressure conditions and under less severe conditions where pressure changes were minimized. For this series of tests, pressure changes were modified to simulate passage through a horizontal bulb turbine, commonly installed at low …
Date:
July 31, 2003
Creator:
Abernethy, Cary S.; Amidan, Brett G. & Cada, G. F.
Object Type:
Report
System:
The UNT Digital Library
Heterogeneidad estructural y lumÃnica del sotobosque de una selva nublada andina de Venezuela
Article discussing the understory of an Andean cloud forest in the Sierra Nevada National Park, Venezuela.
Date:
July 2003
Creator:
Acevedo, Miguel F.; Ataroff, Michele; Monteleone, Susan & Estrada, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
A brief examination of optical tagging technologies.
Presented within this report are the results of a brief examination of optical tagging technologies funded by the Laboratory Directed Research and Development (LDRD) program at Sandia National Laboratories. The work was performed during the summer months of 2002 with total funding of $65k. The intent of the project was to briefly examine a broad range of approaches to optical tagging concentrating on the wavelength range between ultraviolet (UV) and the short wavelength infrared (SWIR, {lambda} < 2{micro}m). Tagging approaches considered include such things as simple combinations of reflective and absorptive materials closely spaced in wavelength to give a high contrast over a short range of wavelengths, rare-earth oxides in transparent binders to produce a narrow absorption line hyperspectral tag, and fluorescing materials such as phosphors, dies and chemically precipitated particles. One technical approach examined in slightly greater detail was the use of fluorescing nano particles of metals and semiconductor materials. The idea was to embed such nano particles in an oily film or transparent paint binder. When pumped with a SWIR laser such as that produced by laser diodes at {lambda}=1.54{micro}m, the particles would fluoresce at slightly longer wavelengths, thereby giving a unique signal. While it is believed that …
Date:
July 1, 2003
Creator:
Ackermann, Mark R.; Cahill, Paul A. (Aspecular Optics, Dayton, OH); Drummond, Timothy J. & Wilcoxon, Jess Patrick
Object Type:
Report
System:
The UNT Digital Library
Multi-strange baryon production in Au+Au collisions at {radical}s{sub NN} = 130 GeV
The transverse mass spectra and mid-rapidity yields for {Xi}s and {Omega}s plus their anti-particles are presented. The 10% most central collision yields suggest that the amount of multi-strange particles produced per produced charged hadron increases from SPS to RHIC energies. A hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multi-strange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to {pi}, K, p and {lambda}s.
Date:
July 30, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Multi-strange baryon production in Au-Au collisions at sqrt(sNN) = 130 GeV
The transverse mass spectra and mid-rapidity yields for {Xi}s and {Omega}s plus their anti-particles are presented. The 10% most central collision yields suggest that the amount of multi-strange particles produced per produced charged hadron increases from SPS to RHIC energies. A hydrodynamically inspired model fit to the spectra, which assumes a thermalized source, seems to indicate that these multi-strange particles experience a significant transverse flow effect, but are emitted when the system is hotter and the flow is smaller than values obtained from a combined fit to {pi}, K, p and {Lambda}s.
Date:
July 31, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Pion-Kaon correlations in central Au+Au collisions at {radical}(s{sub NN}) = 130 GeV
No abstract prepared.
Date:
July 31, 2003
Creator:
Adams, J.; Adler, C.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type:
Article
System:
The UNT Digital Library
Fresnel Integral Equations: Numerical Properties
A spatial-domain solution to the problem of electromagnetic scattering from a dielectric half-space is outlined. The resulting half-space operators are referred to as Fresnel surface integral operators. When used as preconditioners for nonplanar geometries, the Fresnel operators yield surface Fresnel integral equations (FIEs) which are stable with respect to dielectric constant, discretization, and frequency. Numerical properties of the formulations are discussed.
Date:
July 22, 2003
Creator:
Adams, R. J.; Champagne, N. J., II & Davis, B. A.
Object Type:
Article
System:
The UNT Digital Library
Supporting Dynamic Ad hoc Collaboration Capabilities
Modern HENP experiments such as CMS and Atlas involve as many as 2000 collaborators around the world. Collaborations this large will be unable to meet often enough to support working closely together. Many of the tools currently available for collaboration focus on heavy-weight applications such as videoconferencing tools. While these are important, there is a more basic need for tools that support connecting physicists to work together on an ad hoc or continuous basis. Tools that support the day-to-day connectivity and underlying needs of a group of collaborators are important for providing light-weight, non-intrusive, and flexible ways to work collaboratively. Some example tools include messaging, file-sharing, and shared plot viewers. An important component of the environment is a scalable underlying communication framework. In this paper we will describe our current progress on building a dynamic and ad hoc collaboration environment and our vision for its evolution into a HENP collaboration environment.
Date:
July 14, 2003
Creator:
Agarwal, Deborah A. & Berket, Karlo
Object Type:
Article
System:
The UNT Digital Library
Trade and the Americas
None
Date:
July 29, 2003
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
U.S.-European Union Trade Relations: Issues and Policy Challenges
None
Date:
July 11, 2003
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
U.S.-European Union Trade Relations: Issues and Policy Challenges
None
Date:
July 17, 2003
Creator:
Ahearn, Raymond J.
Object Type:
Report
System:
The UNT Digital Library
Scoping Inventory Calculations for the Rare Isotope Accelerator
This document is a report on our activities in FY03 exploring nuclear safety and hazard analysis issues relevant to the Rare Isotope Accelerator (RIA). It is not clear whether DOE will classify the RIA as an accelerator facility subject to the accelerator-specific safety requirements of DOE Order 420.2A or as a nonreactor nuclear facility subject to the requirements of 10 CFR 830. The final outcome of this issue will have significant impact on the construction and operation of the facility and the quality assurance requirements for items or services that may affect nuclear safety. The resolution of this issue will be an important earlier decision for the RIA project team and will require early consultation with the appropriate DOE authorities. For nuclear facilities, facility hazard classification depends on the inventory of releasable radionuclides; therefore, some simplistic, scoping inventory calculations for some assumed targets and beams are done to estimate the hazard category of RIA if it is declared a nuclear facility. These calculations show that for the scenarios analyzed, RIA would produce sufficient quantities of radionuclides to be classified as a Category 3 nuclear facility. Over the lifetime of RIA operations, it may be possible to build up Category 2 …
Date:
July 25, 2003
Creator:
Ahle, L. E. & Boles, J. L.
Object Type:
Report
System:
The UNT Digital Library
Coherent beam-beam effects, theory & observations
Current theoretical understanding of the coherent beam-beam effect as well as its experimental observations are discussed: conditions under which the coherent beambeam modes may appear, possibility of their resonant interaction (coherent resonances), stability of beam-beam oscillations in the presence of external impedances. A special attention is given to the coherent beam-beam modes of finite length bunches: the synchro-betatron coupling is shown to provide reduction in the coherent tuneshift and--at the synchrotron tune values smaller than the beam-beam parameter--Landau damping by overlapping synchrotron satellites.
Date:
July 16, 2003
Creator:
Alexahin, Yuri I
Object Type:
Article
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 28, Ed. 1 Thursday, July 17, 2003
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
July 17, 2003
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 29, Ed. 1 Thursday, July 24, 2003
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
July 24, 2003
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 18, No. 30, Ed. 1 Thursday, July 31, 2003
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
July 31, 2003
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Nonradiological Environmental Report Maamora Site, Morocco
Under the Sister Laboratory Arrangement between Lawrence Livermore National Laboratory (LLNL) and the Moroccan National Center for Nuclear Energy Sciences and Techniques (CNESTEN), environmental sampling and analysis were performed to assess the background concentrations of nonradiological constituents in various environmental media at the Maamora Forest CNESTEN Laboratory Site. Samples were collected from surface soil, surface water and groundwater wells, short-lived vegetation (mainly native grass), and long-lived vegetation (cork oak). Samples were collected inside the property fence line, in the buffer zone surrounding the site, and off site at water locations. The soil and vegetation samples were analyzed for metals and pesticides and screened for polychlorinated biphenyls (PCBs); the water samples were analyzed for metals, general minerals, and pesticides and screened for PCBs.
Date:
July 17, 2003
Creator:
Althouse, P E; Blake, R G; Bandong, B B; Belghit, H & Dehbi, N
Object Type:
Report
System:
The UNT Digital Library
Congressional Record: Its Production, Distribution, and Accessibility
Congressional Record.This report provides information about the Production, Distribution, and Accessibility of Congressional Record. The Congressional Record is the most widely published account of the debates and activities in congress.
Date:
July 17, 2003
Creator:
Amer, Mildred
Object Type:
Report
System:
The UNT Digital Library
Congressional Record: Its Production, Distribution, and Accessibility
The Congressional Record is the most widely recognized published account of the debates and activities in Congress. The Record often reflects the intent of Congress in enacting legislation. This fact sheet is one of a series on the legislative process.
Date:
July 17, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
Guide to Individuals Seated on the Senate Dais
This report is a brief summary of House and Senate procedures for reaching agreement on legislation. It discusses the provisions of House Rule XXII and Senate Rule XXVIII as well as other applicable rules, precedents, and practices. The report focuses on the most common and customary procedures.
Date:
July 16, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
House and Senate Chaplains
None
Date:
July 18, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
Pages of the United States Congress: Selection, Duties, and Program Administration
None
Date:
July 17, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
Secret Sessions of the House and Senate
None
Date:
July 17, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library
A User's Guide to the Congressional Record
The Congressional Record is a substantially verbatim account of remarks made during the proceedings of the House and Senate, subject only to technical, grammatical, and typographical corrections. It consists of four main sections: the proceedings of the House and Senate, the Extensions of Remarks, and the Daily Digest. This fact sheet is one of a series on the legislative process.
Date:
July 17, 2003
Creator:
Amer, Mildred L.
Object Type:
Report
System:
The UNT Digital Library