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Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects
This report summarizes the work done during the eighth quarter of the project.
Date:
January 18, 2005
Creator:
Virkar, Anil V.
Object Type:
Report
System:
The UNT Digital Library
Active Cathodes for Super-High Power Density Solid Oxide Fuel Cells Through Space Charge Effects
This report summarizes the work done during the seventh quarter of the project. Effort was directed in three areas: (1) Further development of the model on the role of connectivity on ionic conductivity of porous bodies, including the role of grain boundaries and space charge region, and estimation of the polarization resistance. (2) Fabrication of cells with cathodes formed by infiltration. () Testing of cells to isolate the possible effect of space charge.
Date:
January 18, 2005
Creator:
Virkar, Anil V.
Object Type:
Report
System:
The UNT Digital Library
Activity Estimates of Various Radionuclides in Saltstone Vapor Phase
Savannah River National Laboratory estimated activities of various radionuclides in vapor phase associated with saltstone. These radionuclides, as well as the estimated activity and concentration of each in the gases phase are listed. Some of the activities are so low they should be considered zero. In particular, activity of the antimony and tin isotopes in the gas phase correspond to less than a molecule of gas per 340 m3 of vapor volume. Equilibrium calculations of the partitioning of each radionuclide between vapor and dissolved phases were done using the Geochemists Workbench (R). The conceptual model used was that 1 curie of each constituent was available to partition between vapor and dissolved phases. The overall assumption is that exposure would come from a single release of the vapor phase from a saltstone vault.
Date:
January 18, 2005
Creator:
MILES, DENHAM
Object Type:
Report
System:
The UNT Digital Library
AIDS in the Caribbean and Central America
This report considers the AIDS epidemic in the Caribbean and Central America. The report measures the support the region has received from countries outside of it along with which agencies within the U.S. have been leading the charge. Moreover, the report examines the additional consequences an epidemic of this size could have on the region.
Date:
January 18, 2005
Creator:
Sullivan, Mark P.
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 106, No. 243, Ed. 1 Tuesday, January 18, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 18, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Basic Data Report for Drillhole SNL-5 (C-3002)
SNL-5 (permitted by the New Mexico State Engineer as C-3002) was drilled to provide geological data and hydrological testing of the Culebra Dolomite Member of the Permian Rustler Formation in an area north of the Waste Isolation Pilot Plant (WIPP) site where data are sparse and where a pumping or monitoring well for the northern pumping test is needed. SNL-5 is located in the southeast quarter of section 6, T22S, R31E, in eastern Eddy County, New Mexico. SNL-5 was drilled to a total depth of 687 ft below ground level (bgl), based on driller's measurements. Below the caliche pad, SNL-5 encountered the Mescalero caliche, Gatu?a, Dewey Lake, and Rustler Formations. Two intervals of the Rustler were cored: (1) from the lower Forty-niner Member through the Magenta Dolomite and into the upper Tamarisk Member; and (2) from the lower Tamarisk Member through the Culebra Dolomite and into the upper Los Meda?os Members. Geophysical logs were acquired from the open hole to a depth of ~672 ft. No water was observed to flow into the open drillhole until the Culebra was penetrated. includes horizontal beds and laminae near the base, and the uppermost part shows some inclined bedding. The mudstone unit shows …
Date:
January 18, 2005
Creator:
Powers, Dennis W. & Services, Washington Regulatory and Environmental
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 84, No. 45, Ed. 1 Tuesday, January 18, 2005
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2005
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Bead and Process for Removing Dissolved Metal Contaminants
A bead is provided which comprises or consists essentially of activated carbon immobilized by crosslinked poly (carboxylic acid) binder, sodium silicate binder, or polyamine binder. The bead is effective to remove metal and other ionic contaminants from dilute aqueous solutions. A method of making metal-ion sorbing beads is provided, comprising combining activated carbon, and binder solution (preferably in a pin mixer where it is whipped), forming wet beads, and heating and drying the beads. The binder solution is preferably poly(acrylic acid) and glycerol dissolved in water and the wet beads formed from such binder solution are preferably heated and crosslinked in a convection oven.
Date:
January 18, 2005
Creator:
Summers, Bobby L., Jr.; Bennett, Karen L. & Foster, Scott A.
Object Type:
Patent
System:
The UNT Digital Library
Boerne Star & Hill Country Recorder (Boerne, Tex.), Vol. 98, No. 98, Ed. 1 Tuesday, January 18, 2005
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2005
Creator:
Watson, Steven G.
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Tuesday, January 18, 2005
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
January 18, 2005
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Cable and Satellite Television Network Tiering and “a la Carte” Options for Consumers: Issues for Congress
This report consists of cable and satellite television network tiering and "a la carte" options for consumers.
Date:
January 18, 2005
Creator:
Goldfarb, Charles B.
Object Type:
Report
System:
The UNT Digital Library
Caribbean Region: Issues in U.S. Relations
This report deals with broader issues in U.S relations with the Caribbean and does not include an extensive discussion of Haiti and Cuba.
Date:
January 18, 2005
Creator:
Sullivan, Mark P.
Object Type:
Report
System:
The UNT Digital Library
[CMP staff member 1 operates video camera, 1]
Photograph of a member of the Center for Media Production (CMP) staff operating a video camera. The man can be seen on the right side of the photograph, facing to the left of the camera. He is bending his right knee to rest his foot on the platform next to him. The video camera and tripod can be seen on the platform, along with other equipment. The man is touching the side of the camera with his right hand and holding a wound-up cable in his left.
Date:
January 18, 2005
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
[CMP staff member 1 operates video camera, 2]
Photograph of a member of the Center for Media Production (CMP) staff operating a video camera. The man can be seen on the right side of the photograph, looking down at the controller in his hands. He is holding a wound-up cable under his left arm. The video camera and tripod can be seen on the left side of the photograph, facing to the left of the camera.
Date:
January 18, 2005
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
[CMP staff member 1 operates video camera, 3]
Photograph of a member of the Center for Media Production (CMP) staff operating a video camera. The man can be seen on the right side of the photograph, looking down at the controller in his hands. He is holding a wound-up cable under his left arm. The video camera and tripod can be seen on the left side of the photograph, facing to the left of the camera.
Date:
January 18, 2005
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
[CMP staff member 2 operates film camera]
Photograph of a member of the Center for Media Production (CMP) staff operating a video camera. The individual can be seen on the left side of the photograph, reaching up towards the camera with both arms. The camera and tripod are visible on the right side of the photograph, facing to the left of the camera.
Date:
January 18, 2005
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
CRACK TIP OPENING DISPLACEMENT AND ANGLE FOR A GROWING CRACK IN CARBON STEEL
The crack tip opening displacements and angles (CTOD/CTOA) are calculated with finite element method based on the test data of a set of constraint-dependent J-R curves for A285 carbon steel. The values of the CTOD/CTOA are initially high at initiation, but rapidly decrease to a nearly constant value. When the common practice is adopted by using only the constant part of CTOD/CTOA as the fracture criterion, the crack growth behavior is shown to be severely underestimated. However, with a bilinear form of CTOD/CTOA fracture criterion which approximates the initial non-constant portion, the experimental load vs. crack extension curves can be closely predicted. Furthermore, it is demonstrated that the CTOD/CTOA is crack tip constraint dependent. The values of CTOD/CTOA for specimens with various ratios of crack length to specimen width (a/W) are reflected by the J-R curves and their slopes.
Date:
January 18, 2005
Creator:
LAM, POH-SANG
Object Type:
Article
System:
The UNT Digital Library
The Department of Defense Rules for Military Commissions: Analysis of Procedural Rules and Comparison with Proposed Legislation and the Uniform Code of Military Justice
This report provides a background and analysis comparing military commissions as envisioned under M.C.O. No. 1 to general military courts-martial conducted under the UCMJ. The report notes some of the criticism directed at the President’s M.O., and explains how those concerns are addressed by the military commission orders and instructions. The report provides two charts to compare the regulations issued by the Department of Defense and standard procedures for general courts-martial under the Manual for Courts-Martial. The second chart, which compares procedural safeguards incorporated in the regulations with established procedures in courts martial, follows the same order and format used in CRS Report RL31262, Selected Procedural Safeguards in Federal, Military, and International Courts, in order to facilitate comparison with safeguards provided in federal court and the International Criminal Court.
Date:
January 18, 2005
Creator:
Elsea, Jennifer K.
Object Type:
Report
System:
The UNT Digital Library
Development of a Rotary Microfilter for SRS HLW Applications
The processing rate of Savannah River Site (SRS) high-level waste decontamination processes are limited by the flow rate of the solid-liquid separation. The baseline process, using a 0.1 micron cross-flow filter, produces approximately 0.02 gpm/sq. ft. of filtrate under expected operating conditions. Savannah River National Laboratory (SRNL) personnel identified the rotary microfilter as a technology that could significantly increase filter flux, with throughput improvements of as much as 10X for that specific operation. With funding from the U. S. Department of Energy Office of Cleanup Technology, SRNL personnel are evaluating and developing the rotary microfilter for radioactive service at SRS. This work includes pilot-scale and actual waste testing to evaluate system reliability, the impact of radiation on system components, the filter flux for a variety of waste streams, and relative performance for alternative filter media. Personnel revised the design for the disks and filter unit to make them suitable for high-level radioactive service.
Date:
January 18, 2005
Creator:
MICHAEL, POIRIER
Object Type:
Report
System:
The UNT Digital Library
Development of an Experimental Database and Theories for Prediction of Thermodynamic Properties of Aqueous
Construction of models of geochemical and microbial activity in aqueous solutions, using theoretical predictions constrained by experimental data.
Date:
January 18, 2005
Creator:
Shock, E. L.
Object Type:
Report
System:
The UNT Digital Library
Develpoment of a one-meter plasma source for heavy ion beam chargeneutralization
Highly ionized plasmas are being employed as a medium for charge neutralizing heavy ion beams in order to focus to a small spot size. Calculations suggest that plasma at a density of 1-100 times the ion beam density and at a length {approx} 0.1-1 m would be suitable for achieving a high level of charge neutralization. A radio frequency (RF) source was constructed at the Princeton Plasma Physics Laboratory (PPPL) in support of the joint Neutralized Transport Experiment (NTX) at the Lawrence Berkeley National Laboratory (LBNL) to study ion beam neutralization. Pulsing the source enabled operation at pressures {approx} 10{sup -6} Torr with plasma densities of 10{sup 11} cm{sup -3}. Near 100% ionization was achieved. The plasma was 10 cm in length, but future experiments require a source 1 m long. The RF source does not easily scale to the length. Consequently, large-volume plasma sources based upon ferroelectric ceramics are being considered. These sources have the advantage of being able to increase the length of the plasma and operate at low neutral pressures. The source will utilize the ferroelectric ceramic BaTiO{sub 3} to form metal plasma. A 1 m long section of the drift tube inner surface of NTX will …
Date:
January 18, 2005
Creator:
Efthimion, Philip C.; Gilson, Erik P.; Grisham, Larry; Davidson, Ronald C.; Yu, Simon; Waldron, William et al.
Object Type:
Article
System:
The UNT Digital Library
Drift compression and final focus options for heavy ionfusion
A drift compression and final focus lattice for heavy ion beams should focus the entire beam pulse onto the same focal spot on the target. The authors show that this requirement implies that the drift compression design needs to satisfy a self-similar symmetry condition. For un-neutralized beams, the Lie symmetry group analysis is applied to the warm-fluid model to systematically derive the self-similar drift compression solutions. For neutralized beams, the 1D Vlasov equation is solved explicitly and families of self-similar drift compression solutions are constructed. To compensate for the deviation from the self-similar symmetry condition due to the transverse emittance, four time-dependent magnets are introduced in the upstream of the drift compression such that the entire beam pulse can be focused onto the same focal spot.
Date:
January 18, 2005
Creator:
Qin, Hong; Davidson, Ronald C.; Barnard, John J. & Lee, Edward P.
Object Type:
Article
System:
The UNT Digital Library
Dynamics of neutralized electrons and the focusability of intenseion beams in HIF accelerating structures
In most of the proposals for HIF reactors, beams propagate ballistically through the containment chamber. To get the required final radius ({approx} 3 mm), the charge of the beam must be neutralized to some extent. Several neutralization schemes are possible, as co-injection of negative-ions beams, inclusion of external sources of electrons, or it can be provided by electrons coming from ionization of the background gas. In this work, we study the role of the electron dynamic on the neutralization and final radius of the beam. This is done by performing fully-electromagnetic PIC simulations of the beam ballistic transport using the BPIC code[1]. In agreement with previous works we found that the evolution of an isolated beam is well described as a bidimensional adiabatic compression, and the beam neutralization degree and final radius can be estimated from the initial electron transversal temperature. When a background gas is present the evolution differs significantly from an adiabatic compression. Even for low gas densities, the continuous electrons flow coming from gas ionization limits efficiently the compressional heating, thus reducing the final radius. Aspects of beam neutralization by background gas ionization are discussed.
Date:
January 18, 2005
Creator:
Lifschitz, A. F.; Maynard, G. & Vay, J.-V.
Object Type:
Article
System:
The UNT Digital Library
[Email to Dave Hamrick from Mark Busby, January 18, 2005]
Email from Mark Busby to Dave Hamrick regarding bylaws for the Texas Institute of Letters Council.
Date:
January 18, 2005
Creator:
Busby, Mark
Object Type:
Letter
System:
The UNT Digital Library