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9-11 Commission Hearing #1, April 1, 2003, Part 2
Recording of the first public hearing held by the National Commission on Terrorist Attacks upon the United States on April 1, 2003 at the Alexander Hamilton U.S. Custom House in New York City. This hearing specifically addresses the topics of borders, money, and transportation; law enforcement, domestic intelligence, and homeland security; and immediate response to the attacks. This section includes testimony from Steven Brill on the subject of law enforcement, domestic intelligence, and homeland security.
Date:
April 1, 2004
Creator:
National Commission on Terrorist Attacks upon the United States
Object Type:
Video
System:
The UNT Digital Library
2004 DOE Hydrogen, Fuel Cells & Infrastructure Technologies Program Review Presentation COST AND PERFORMANCE ENHANCEMENTS FOR A PEM FUEL CELL TURBOCOMPRESSOR
The objective is to assist the Department of Energy in the development of a low cost, reliable and high performance air compressor/expander. Technical Objective 1: Perform a turbocompressor systems PEM fuel cell trade study to determine the enhanced turbocompressor approach. Technical Objective 2: Using the results from technical objective 1, an enhanced turbocompressor will be fabricated. The design may be modified to match the flow requirements of a selected fuel cell system developer. Technical Objective 3: Design a cost and performance enhanced compact motor and motor controller. Technical Objective 4: Turbocompressor/motor controller development.
Date:
April 1, 2004
Creator:
Gee, Mark K.
Object Type:
Presentation
System:
The UNT Digital Library
2004 Initial Assessments of Closure for the S-SX Tank Farm: Numerical Simulations
In support of CH2M HILL Hanford Group, Inc.'s (CHG) preparation of a Field Investigative Report (FIR) for the closure of the Hanford Site Single-Shell Tank (SST) Waste Management Area (WMA) tank farms, a set of numerical simulations of flow and solute transport was executed to investigate different potential contaminant source scenarios that may pose long-term risks to groundwater from the closure of the S-SX Tank Farm. This report documents the simulation of 7 cases (plus two verification) involving two-dimensional cross sections through the S Tank Farm (Tanks S-101, S102, and S-103) and the simulation of one case involving three-dimensional domain of the S Tank Farm. Using a unit release scenario at Tank S-103, three different types of leaks were simulated. These simulations assessed the effect of leaks during retrieval as well as residual wastes and ancillary equipment after closure. Two transported solutes were considered: uranium-238 (U-238) and technetium-99 (Tc 99). To evaluate the effect of sorption on contaminant transport, six different sorption coefficients were simulated for U 238. Overall, simulations results for the S Tank Farm showed that only a small fraction (< 0.4%) of the U-238 with sorption coefficients 0.6 mL/g migrated from the vadose zone in all …
Date:
April 1, 2004
Creator:
Zhang, Z. F.; Freedman, Vicky L.; Waichler, Scott R. & White, Mark D.
Object Type:
Report
System:
The UNT Digital Library
[2004 State Democratic Convention schedule]
Schedule of events for the 2004 State Democratic Convention.
Date:
April 2004
Creator:
Texas Democratic Party
Object Type:
Text
System:
The UNT Digital Library
A 3D Frictional Segment-to-Segment Contact Method for Large Deformations and Quadratic Elements
Node-on-segment contact is the most common form of contact used today but has many deficiencies ranging from potential locking to non-smooth behavior with large sliding. Furthermore, node-on-segment approaches are not at all applicable to higher order discretizations (e.g. quadratic elements). In a previous work, [3, 4] we developed a segment-to-segment contact approach for eight node hexahedral elements based on the mortar method that was applicable to large deformation mechanics. The approach proved extremely robust since it eliminated the over-constraint that caused 'locking' and provided smooth force variations in large sliding. Here, we extend this previous approach to treat frictional contact problems. In addition, the method is extended to 3D quadratic tetrahedrals and hexahedrals. The proposed approach is then applied to several challenging frictional contact problems that demonstrate its effectiveness.
Date:
April 1, 2004
Creator:
Puso, M; Laursen, T & Solberg, J
Object Type:
Article
System:
The UNT Digital Library
Ab initio study of Al(III) adsorption on stepped {100} surfaces of KDP crystals
Crystals of potassium dihydrogen phosphate (KH{sub 2}PO{sub 4}, KDP) are grown in large scale for use as nonlinear material in laser components. Traces of trivalent metal impurities are often added to the supernatant to achieve habit control during crystal growth, selectively inhibiting the growth of the {l_brace}100{r_brace} face. Model systems representing AlPO{sub 4}-doped KDP {l_brace}100{r_brace} stepped surfaces are prepared and studied using ab initio quantum methods. Results of Hartree-Fock partial optimizations are presented, including estimated energies of ion pair binding to the steps. We find that the PO{sub 4}{sup 3-} ion takes a position not unlike that of a standard phosphate in the crystal lattice, while the aluminum atom is displaced far from a K{sup +} ion position to establish coordinations with the PO{sub 4}{sup 3-} ion and to bind with another lattice-bound phosphate. Our optimized structures suggest that it is the formation of a fourth coordination of Al(III) to a third phosphate ion from solution, or perhaps from a nearby position in the lattice, that disrupts further deposition, pinning the steps.
Date:
April 1, 2004
Creator:
Salter, E A; Wierzbicki, A & Land, T A
Object Type:
Article
System:
The UNT Digital Library
Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments: Final Technical Report
The research during this project has concentrated on developing a correlation between rock deformation mechanisms and their acoustic velocity signature. This has included investigating: (1) the acoustic signature of drained and undrained unconsolidated sands, (2) the acoustic emission signature of deforming high porosity rocks (in comparison to their low porosity high strength counterparts), (3) the effects of deformation on anisotropic elastic and poroelastic moduli, and (4) the acoustic tomographic imaging of damage development in rocks. Each of these four areas involve triaxial experimental testing of weak porous rocks or unconsolidated sand and involves measuring acoustic properties. The research is directed at determining the seismic velocity signature of damaged rocks so that 3-D or 4-D seismic imaging can be utilized to image rock damage. These four areas of study are described in the report: (1) Triaxial compression experiments have been conducted on unconsolidated Oil Creek sand at high confining pressures. (2) Initial experiments on measuring the acoustic emission activity from deforming high porosity Danian chalk were accomplished and these indicate that the AE activity was of a very low amplitude. (3) A series of triaxial compression experiments were conducted to investigate the effects of induced stress on the anisotropy developed in …
Date:
April 1, 2004
Creator:
Scott, Thurman E., Jr. & Abousleiman, Younane
Object Type:
Report
System:
The UNT Digital Library
ADAPTIVE FULL-SPECTRUM SOLOR ENERGY SYSTEMS
This RD&D project is a three year team effort to develop a hybrid solar lighting (HSL) system that transports solar light from a paraboloidal dish concentrator to a luminaire via a large core polymer fiber optic. The luminaire can be a device to distribute sunlight into a space for the production of algae or it can be a device that is a combination of solar lighting and electric lighting. A benchmark prototype system has been developed to evaluate the HSL system. Sunlight is collected using a one-meter paraboloidal concentrator dish with two-axis tracking. A secondary mirror consisting of eight planar-segmented mirrors directs the visible part of the spectrum to eight fibers (receiver) and subsequently to eight luminaires. This results in about 8,200 lumens incident at each fiber tip. Each fiber can illuminate about 16.7 m{sup 2} (180 ft{sup 2}) of office space. The IR spectrum is directed to a thermophotovoltaic (TPV) array to produce electricity. During this reporting period, the project team made advancements in the design of the second generation (Alpha) system. For the Alpha system, the eight individual 12 mm fibers have been replaced with a centralized bundle of 3 mm fibers. The TRNSYS Full-Spectrum Solar Energy System …
Date:
April 1, 2004
Creator:
Wood, Byard D.
Object Type:
Report
System:
The UNT Digital Library
Advanced Compressor Engine Controls to Enhance Operation, Reliability and Integrity
This document provides a mid-term update for the ''Advanced Compressor Engine Controls to Enhance Operation, Reliability, and Integrity'' project. SwRI is conducting this project for DOE in conjunction with Cooper Energy Services, under DOE contract number DE-FC26-03NT41859. The objective of this one-year project is to develop, evaluate, and demonstrate advanced engine control technologies and hardware, specifically, closed-loop NO{sub x} emissions control on a two-stroke integral reciprocating engine/compressor used for pipeline gas transmission service. This work uses a Cooper-Bessemer GMVH-6 laboratory engine owned by Cooper Energy Services (CES) and installed in a test facility at Southwest Research Institute (SwRI). The gas transmission industry operates over 4,000 integral engine compressors, the majority being two-stroke, with a median age of 45 years and a median size of 2000 horsepower. These engines have historically exhibited poor performance and high emissions, due in part to poor engine control. The end results are misfires and partial burns that lead to increased fuel usage and exhaust emissions. Many of the slow-speed integral engines in the gas compression industry utilize control systems that are outdated, slow, and suffer from poor resolution. Research into more advanced control systems for integral compressor engines has increased tremendously in recent years. The …
Date:
April 1, 2004
Creator:
Bourn, Gary D.
Object Type:
Report
System:
The UNT Digital Library
Advanced Gas Turbine Systems Research Program Quarterly Report
The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.
Date:
April 1, 2004
Creator:
Golan, Lawrence P.
Object Type:
Report
System:
The UNT Digital Library
The Advocate, Volume 9, Issue 2, April-June 2004
Quarterly update providing information on environmental regulations for small businesses and local governments in Texas.
Date:
April 2004
Creator:
Texas Natural Resource Conservation Commission
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
[After a Fashion, April 2004]
Article about two events hosted by Brilliant Magazine celebrating Carolyn Farb and Mark Sullivan.
Date:
April 2004
Creator:
Moser, Stephen MacMillan
Object Type:
Article
System:
The UNT Digital Library
The Age, Volume 25, Number 4, April 2004
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
April 2004
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Aggregation of Distributed Generation Assets in New York State: Appendix
This report appendix describes aspects of a project to demonstrate the technical and economic feasibility of aggregating distributed generating resources in New York State. This project demonstrates a system that allows distributed generation (DG) to participate in competitive markets in much the same way as large central-station power plants. This approach involves aggregating the distributed demand-side resources into a single transaction entity consistent with the requirements of the New York Independent System Operator (NYISO). This single entity then buys or sells capacity and energy (i.e., curtailment) in NYISO markets.
Date:
April 1, 2004
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 128, No. 43, Ed. 1 Thursday, April 1, 2004
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
April 1, 2004
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
All Jazzed Up!: Music, arts, and food harmonize at the Denton Arts & Jazz Festival
Draft of an article about the Denton Arts & Jazz Festival published in the April 2004 issue of Texas Highways magazine.
Date:
2004-04~
Creator:
Mallory, Randy
Object Type:
Text
System:
The UNT Digital Library
Alternative Fuel School Bus Information Resources
This 4-page Clean Cities fact sheet provides a list of important resources for learning more about alternative fuels in school buses. It includes information regarding Alternative Fuel School Bus Manufacturers, Alternative Fuel HD Engine Manufacturers, Alternative Fuel School Bus Operators, and Key Web Resources for Alternative Fuels.
Date:
April 1, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 106, No. 1, Ed. 1 Thursday, April 1, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 1, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Analysis of Devonian Black Shales in Kentucky for Potential Carbon Dioxide Sequestration and Enhanced Natural Gas Production Quarterly Report: January-March 2004
CO{sub 2} emissions from the combustion of fossil fuels have been linked to global climate change. Proposed carbon management technologies include geologic sequestration of CO{sub 2}. A possible, but untested, sequestration strategy is to inject CO{sub 2} into organic-rich shales. Devonian black shales underlie approximately two-thirds of Kentucky and are thicker and deeper in the Illinois and Appalachian Basin portions of Kentucky than in central Kentucky. The Devonian black shales serve as both the source and trap for large quantities of natural gas; total gas in place for the shales in Kentucky is estimated to be between 63 and 112 trillion cubic feet. Most of this natural gas is adsorbed on clay and kerogen surfaces, analogous to methane storage in coal beds. In coals, it has been demonstrated that CO{sub 2} is preferentially adsorbed, displacing methane. Black shales may similarly desorb methane in the presence of CO{sub 2}. The concept that black, organic-rich Devonian shales could serve as a significant geologic sink for CO{sub 2} is the subject of current research. To accomplish this investigation, drill cuttings and cores were selected from the Kentucky Geological Survey Well Sample and Core Library. Methane and carbon dioxide adsorption analyses are being performed …
Date:
April 1, 2004
Creator:
Nuttall, Brandon C.
Object Type:
Report
System:
The UNT Digital Library
Analysis of U.S. School Bus Populations and Alternative Fuel Potential
This Clean Cities final report provides information concerning different school bus types, school bus populations, school bus miles and fuel use, school bus emissions, alternative fuel school buses, and potential for alternative fuel school bus use through 2010. It is intended to provide general information concerning the size of the school bus market in the U.S., as well as to provide some quantification of the potential for alternative fuel use in school buses in the U.S., and what that might mean for petroleum displacement and emissions reductions.
Date:
April 1, 2004
Creator:
Laughlin, M.
Object Type:
Text
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 14, Ed. 1 Thursday, April 1, 2004
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 2004
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Atmospheric Aerosol Source-Receptor Relationships: The Role of Coal-Fired Power Plants
This report describes the technical progress made on the Pittsburgh Air Quality Study (PAQS) during the period of September 2003 through February 2004. Significant progress was made this project period on the analysis of ambient data, source apportionment, and deterministic modeling activities. Results highlighted in this report include chemical fractionation of the organic fraction to quantify the ratio of organic mass to organic carbon (OM/OC). The average OM/OC ratio for the 31 samples analyzed so far is 1.89, ranging between 1.62 and 2.53, which is consistent with expectations for an atmospherically processed regional aerosol. Analysis of the single particle data reveals that a on a particles in Pittsburgh consist of complex mixture of primary and secondary components. Approximately 79% of all particles measured with the instrument containing some form of carbon, with Carbonaceous Ammonium Nitrate (54.43%) being the dominant particle class. PMCAMx predictions were compared with data from more than 50 sites of the STN network located throughout the Eastern United States for the July 2001 period. OC and sulfate concentrations predicted by PMCAMx are within {+-}30% of the observed concentration at most of these sites. Spherical Aluminum Silicate particle concentrations (SAS) were used to estimate the contribution of primary …
Date:
April 1, 2004
Creator:
Robinson, Allen L.; Pandis, Spyros N. & Davidson, Cliff I.
Object Type:
Report
System:
The UNT Digital Library
An Audit Report on Certification of the Permanent School Fund's Bond Guarantee Program
Report of the Texas State Auditor's Office related to the total amount of school district bonds guaranteed by the Permanent School Fund's (PSF) Bond Guarantee Program (Program), whether these exceeded the limits established by state statute and the Internal Revenue Service (IRS), and following up on related issues from the previous year.
Date:
April 2004
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History
An Audit Report on The Department of Health's Monitoring of Program Service Contractors' Financial Operations
Report of the Texas State Auditor's Office related to determining whether the Department of Health enforces financial accountability by ensuring that contractors provide the services for which they request payment, ensuring that contractors follow state and federal requirements related to contract and grant management activities, and having controls in place to ensure that it receives payment from performing contracts.
Date:
April 2004
Creator:
Texas. Office of the State Auditor.
Object Type:
Report
System:
The Portal to Texas History