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Simulated Passage Through A Modified Kaplan 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 and dissolved gas supersaturation (resulting from the release of water from the spillway). The responses of fall Chinook salmon and bluegill sunfish to these two stresses, both singly and in combination, were investigated in the laboratory. A previous test series (Abernethy et al. 2001) evaluated the effects of passage through a Kaplan turbine under the ?worst case? pressure conditions. For this series of tests, pressure changes were modified to simulate passage through a Kaplan turbine under a more ?fish-friendly? mode of operation. The results were compared to results from Abernethy et al. (2001). Fish were exposed to total dissolved gas (TDG) levels of 100%, 120%, or 135% of saturation for 16-22 hours at either surface (101 kPa) or 30 ft (191 kPa) of pressure, then held at surface pressure at 100% saturation for a 48-hour observation period. Sensitivity of fall Chinook salmon to gas supersaturation was slightly higher than in the previous test series, with 15% mortality for surface-acclimated fish at 120% TDG, compared to 0% in the previous tests.
Date:
March 15, 2002
Creator:
Abernethy, Cary S.; Amidan, Brett G. & Cada, G. F.
Object Type:
Report
System:
The UNT Digital Library
Streamlined Energy-Savings Calculations for Heat-Island Reduction Strategies
We have developed summary tables (sorted by heating- and cooling-degree-days) to estimate the potential of Heat-Island Reduction (HIR) strategies (i.e., solar-reflective roofs, shade trees, reflective pavements, and urban vegetation) to reduce cooling-energy use in buildings. The tables provide estimates of savings for both direct effect (reducing heat gain through the building shell) and indirect effect (reducing the ambient air temperature). In this analysis, we considered three building types that offer the most savings potential : residences, offices, and retail stores. Each building type was characterized in detail by Pre-1980 (old) or 1980+ (new) construction vintage and with natural gas or electricity as heating fuel. We defined prototypical-building characteristics for each building type and simulated the effects of HIR strategies on building cooling and heating energy use and peak power demand using the DOE-2.1E model and weather data for about 240 locations in the U.S. A statistical analysis of previously completed simulations for five cities was used to estimate the indirect savings. Our simulations included the effect of (1) solar-reflective roofing material on building [direct effect], (2) placement of deciduous shade trees near south and west walls of building [direct effect], and (3) ambient cooling achieved by urban reforestation and reflective …
Date:
March 15, 2003
Creator:
Akbari, Hashem & Konopacki, Steven J.
Object Type:
Report
System:
The UNT Digital Library
Smart Energy Management and Control for Fuel Cell Based Micro-Grid Connected Neighborhoods
Fuel cell power generation promises to be an efficient, pollution-free, reliable power source in both large scale and small scale, remote applications. DOE formed the Solid State Energy Conversion Alliance with the intention of breaking one of the last barriers remaining for cost effective fuel cell power generation. The Alliance’s goal is to produce a core solid-state fuel cell module at a cost of no more than $400 per kilowatt and ready for commercial application by 2010. With their inherently high, 60-70% conversion efficiencies, significantly reduced carbon dioxide emissions, and negligible emissions of other pollutants, fuel cells will be the obvious choice for a broad variety of commercial and residential applications when their cost effectiveness is improved. In a research program funded by the Department of Energy, the research team has been investigating smart fuel cell-operated residential micro-grid communities. This research has focused on using smart control systems in conjunction with fuel cell power plants, with the goal to reduce energy consumption, reduce demand peaks and still meet the energy requirements of any household in a micro-grid community environment. In Phases I and II, a SEMaC was developed and extended to a micro-grid community. In addition, an optimal configuration was …
Date:
March 15, 2006
Creator:
Alam, Dr. Mohammad S.
Object Type:
Report
System:
The UNT Digital Library
Formulations for the "Characterization of unique compounds in explosives" project
None
Date:
March 15, 2006
Creator:
Alcaraz, A. & Dougan, A.
Object Type:
Report
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 24, No. 11, Ed. 1 Thursday, March 15, 2007
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
March 15, 2007
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Physics of arcing, and implications to sputter deposition
Arc and glow discharges are defined based on their cathode processes. Arcs are characterized by collective electron emission, which can be stationary with hot cathodes (thermionic arcs), or non-stationary with cold cathodes (cathodic arcs). A brief review on cathodic arc properties serves as the starting point to better understand arcing phenomena in sputtering. Although arcing occurs in both metal and reactive sputtering, it is more of an issue in the reactive case. Arcing occurs if sufficiently high field strength leads to thermal runaway of an electron emission site. The role of insulating layers and surface potential adjustment through current leakage is highlighted. In the situation of magnetron sputtering with ''racetrack'', the need for a model with two spatial dimensions is shown. In many cases, arcing is initiated by breakdown of dielectric layers and inclusions. It is most efficiently prevented if formation and excessive charge-up of dielectric layers and inclusions can be avoided.
Date:
March 15, 2005
Creator:
Anders, Andre
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 105, No. 311, Ed. 1 Monday, March 15, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 15, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 291, Ed. 1 Tuesday, March 15, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 15, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Temperature dependence of the interface moments in Co2MnSi thin films
X-ray magnetic circular dichroism (XMCD) is utilized to explore the temperature dependence of the interface moments in Co{sub 2}MnSi (CMS) thin films capped with aluminium. By increasing the thickness of the capping layer we demonstrate enhanced interface sensitivity of the measurements and the existence of a thin Mn oxide layer at the CMS/Al interface even when a thick capping layer is used. We show that for well ordered L2{sub 1} CMS films there is no significant variation in either the Co or Mn interface moments as a function of temperature. However, a dramatic reduction in the interface moments at low temperature is observed in a disordered CMS film that is likely to be caused by increased Mn-Mn antiferromagnetic coupling. It is suggested that for ordered L2{sub 1} CMS films the temperature dependence of the tunneling magnetoresistance is not related to changes in the interface moments. However, the existence of residual Mn oxide at the CMS/barrier interface could be a contributing factor.
Date:
March 15, 2008
Creator:
Arenholz, Elke; Telling, N.; Keatley, P.; Shelford, L.; Arenholz, E.; van der Laan, G. et al.
Object Type:
Article
System:
The UNT Digital Library
Bottom production
In the context of the LHC experiments, the physics of bottom flavoured hadrons enters in different contexts. It can be used for QCD tests, it affects the possibilities of B decays studies, and it is an important source of background for several processes of interest. The physics of b production at hadron colliders has a rather long story, dating back to its first observation in the UA1 experiment. Subsequently, b production has been studied at the Tevatron. Besides the transverse momentum spectrum of a single b, it has also become possible, in recent time, to study correlations in the production characteristics of the b and the b. At the LHC new opportunities will be offered by the high statistics and the high energy reach. One expects to be able to study the transverse momentum spectrum at higher transverse momenta, and also to exploit the large statistics to perform more accurate studies of correlations.
Date:
March 15, 2000
Creator:
Baines, J.; Baranov, S. P.; Bartalini, P.; Bay, A.; Bouhova, E.; Cacciari, M. et al.
Object Type:
Article
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 21, Ed. 1 Friday, March 15, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 15, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Testing of Continuous Sampling Air-ICP and Mercury Systems as Continuous Emission Monitors at the Diagnostic Instrumentation and Analysis Laboratory
This report has been prepared to document the performance of the continuous sampling reduced-pressure air-ICP-AES (inductively coupled plasma--atomic emission spectroscopy) and mercury-monitor systems developed by Ames Laboratory for use as continuous emission monitors (CEM). This work was funded by the U. S. Department of Energy, Office of Environmental Management, Office of Science and Technology, through the Mixed Waste Focus Area. The purpose of the project is to develop instrumentation and methods for spectroscopic field monitoring applications. During FY00 this included continued work on the development of the continuous sample introduction system and the multi-frequency AOTF-echelle spectrometer, used in conjunction with the reduced-pressure air-ICP-AES system as a multi-metal CEM. The assembly, development, and testing of an echelle spectrometer system for the detection of mercury (Hg) by atomic absorption was also completed during FY00. The continuous sampling system and the multi-metal air-ICP and mercury-monitor CEM systems were tested at Mississippi State University at the Diagnostic Instrumentation and Analysis Laboratory (DIAL) at the end of FY00. This report describes the characteristics and performance of these systems, and the results of the field tests performed at DIAL.
Date:
March 15, 2001
Creator:
Baldwin, D. P.; Bajic, S. J.; Eckels, D. E.; Zamzow, D. S.; Miller, G. P.; Tao, S. et al.
Object Type:
Report
System:
The UNT Digital Library
Energy Policy: Setting the Stage for the Current Debate
The Bush Administration issued its plan for a national energy policy on May 16, 2001. The plan was controversial, characterized by some as leaner on conservation and renewables than Democratic proposals, and predisposed to trade off environmental considerations to increase supply. Comprehensive energy legislation was introduced in the Senate by both parties by late March (S. 388, S. 389, S. 596, S. 597). Bills reported by several House committees (H.R. 2436, H.R. 2460, H.R. 2511, and H.R. 2587) were combined in a single bill, H.R. 4, passed by the House, August 1, 2001. The House version of H.R. 4 would require a 5 billion gallon reduction in light-duty truck and SUV fuel consumption and would open the Arctic National Wildlife Refuge (ANWR) to leasing.
Date:
March 15, 2002
Creator:
Bamberger, Robert L.
Object Type:
Report
System:
The UNT Digital Library
[Response to Address Inquiry]
Email containing an address update from Kristopher Banks.
Date:
March 15, 2008
Creator:
Banks, Christopher
Object Type:
Text
System:
The UNT Digital Library
Freeeze-Out Dynamics at RHIC.
Investigation of the final hadronic state properties of ultra-relativistics pp and Au+Au collisions supplies information on freeze-out conditions at RHIC and possible insights into early stages of these collisions. A variety of particle spectra measured by STAR are studied within the framework of chemical and local kinetic equilibrium models. Here we present the extracted chemical and final kinetic freeze-out temperatures, strangeness saturation factor, final collective flow velocity, and the inferred flow velocity at chemical freeze-out. In light of those measurements we discuss dynamical evolution of the collision system.
Date:
March 15, 2004
Creator:
Barannikova, O.
Object Type:
Article
System:
The UNT Digital Library
Industrial Applications of Low Temperature Plasmas
The use of low temperature plasmas in industry is illustrated by the discussion of four applications, to lighting, displays, semiconductor manufacturing and pollution control. The type of plasma required for each application is described and typical materials are identified. The need to understand radical formation, ionization and metastable excitation within the discharge and the importance of surface reactions are stressed.
Date:
March 15, 2001
Creator:
Bardsley, J N
Object Type:
Article
System:
The UNT Digital Library
Preparation and Properties of Nitrate-Deficient Gadolinium Nitrate Solutions
Because of the high neutron absorption cross sections of some gadolinium isotopes, gadolinium salts in solution are used to control nuclear reactivity in aqueous systems. The present studies concern the preparation and analysis of nitrate-deficient solutions, the effect of time and gamma radiation on their stability, and the determination of the solubility of gadolinium hydroxide in H2O and D2O.
Date:
March 15, 2001
Creator:
Baumann, E. W.
Object Type:
Article
System:
The UNT Digital Library
Animal Agriculture: Selected Issues for Congress
None
Date:
March 15, 2007
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
The Animal Welfare Act: Background and Selected Legislation
This report is on The Animal Welfare Act: Background and Selected Legislation.
Date:
March 15, 2007
Creator:
Becker, Geoffrey S.
Object Type:
Report
System:
The UNT Digital Library
Horse Slaughter Prevention Bills and Issues
This report discusses about Federal Laws, Texas and Illinois Development, Amendment to FY2006 USDA Appropriations and Horse protection Act.
Date:
March 15, 2007
Creator:
Becker, GeoffreyS.
Object Type:
Report
System:
The UNT Digital Library
The Dance Floor of Politics, public artwork
Photograph of a public artwork at Fort Worth's Intermodal Transportation Center. It is a square of red bricks with the words "The Dance Floor of Politics" written in a white square in the middle. A person's leg can be seen standing on the lower right corner of the red square.
Date:
March 15, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Fort Worth's first African American business man, John Pratt artwork
Photograph of Panel A of the Historic Wall at Fort Worth's Intermodal Transportation Center, chronicling the African American Marketplace that was there in 1865 to 1940. The text underneath the mural reads "Fort Worth's first African American business man was John Pratt blacksmith. 1865-1876." The public artwork and mural made of tile.
Date:
March 15, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
[Hunt Hawes Grocery Warehouse Public Artwork]
Photograph of a mural made of tile at Fort Worth's Intermodal Transportation Center. It chronicles the African American Marketplace that was there in 1865 to 1940. The text under the mural says "Hunt Hawes Grocery Warehouse & Bill McDonald's Fraternal Bank and Trust -- Part of the 20th Century. 1900-1910."
Date:
March 15, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History
Two-Dimensional Tiled African Mural Panel D
Photograph of Panel D of the Historic Wall at Fort Worth's Intermodal Transportation Center. It chronicles the African American Jim's Hotel. This is a twentieth-century piece created during the 1930s-1940s. This two-dimensional tiled mural is framed with red bricks and is on display for the public.
Date:
March 15, 2006
Creator:
Belden, Dreanna L.
Object Type:
Photograph
System:
The Portal to Texas History