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A 1-Joule laser for a 16-fiber injection system

Description: A 1-J laser was designed to launch light down 16, multi-mode fibers (400-{micro}m-core dia.). A diffractive-optic splitter was designed in collaboration with Digital Optics Corporation (DOC), and was delivered by DOC. Using this splitter, the energy injected into each fiber varied <1%. The spatial profile out of each fiber was such that there were no ''hot spots,'' a flyer could successfully be launched and a PETN pellet could be initiated. Preliminary designs of the system were driven by sy… more
Date: April 6, 2004
Creator: Honig, J.
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #1, April 1, 2003, Part 2

Description: 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 homela… more
Date: April 1, 2004
Duration: 42 minutes 26 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #9, April 8, 2004, Part 1

Description: Recording of the ninth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 8, 2004 at the Hart Senate Office Building in Washington, D.C. The Commission heard testimony from Dr. Condoleezza Rice, Assistant to the President for National Security Affairs on the formulation and conduct of U.S. counterterrorism policy.
Date: April 8, 2004
Duration: 3 hours 2 minutes 17 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 13, 2004, Part 1

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 13, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the opening statement by Chairman Kean, in addition… more
Date: April 13, 2004
Duration: 2 hours 8 minutes 44 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 13, 2004, Part 2

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 13, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings.This section includes the second panel of the hearing with testimony from … more
Date: April 13, 2004
Duration: 1 hour 25 minutes 10 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 13, 2004, Part 3

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 13, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on threats and responses in 200… more
Date: April 13, 2004
Duration: 2 hours 21 minutes 51 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 13, 2004, Part 4

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 13, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the panel on Summer 2001 with testimony by John Ash… more
Date: April 13, 2004
Duration: 1 hour 26 minutes 28 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 14, 2004, Part 1

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on the performance of the intel… more
Date: April 14, 2004
Duration: 2 hours 19 minutes 14 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 14, 2004, Part 2

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the panel on preventing future attacks inside the U… more
Date: April 14, 2004
Duration: 1 hour 43 minutes 25 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
captions transcript

9-11 Commission Hearing #10, April 14, 2004, Part 3

Description: Recording of the tenth public hearing held by the National Commission on Terrorist Attacks upon the United States on April 14, 2004 in Washington, D.C. The two-day hearing examined the performance of law enforcement and the Intelligence Community prior to September 11 and evaluated post-9/11 reforms in these areas. In addition to witness testimony, four staff statements were delivered during the course of the proceedings. This section includes the staff statement on reforming law enforcement, c… more
Date: April 14, 2004
Duration: 1 hour 56 minutes 20 seconds
Creator: National Commission on Terrorist Attacks upon the United States
Partner: UNT Libraries Government Documents Department
open access

512-S Facility, Actinide Removal Process Radiological Design Summary Report

Description: This report contains top-level requirements for the various areas of radiological protection for workers. Detailed quotations of the requirements for applicable regulatory documents can be found in the Radiological Design Summary Report Implementation Guide. For the purposes of demonstrating compliance with these requirements, per Engineering Standard 01064, ''shall consider / shall evaluate'' indicates that the designer must examine the requirement for the design and either incorporate or prov… more
Date: April 21, 2004
Creator: Nathan, S.J.
Partner: UNT Libraries Government Documents Department
open access

2002-2003 Engineering Accomplishments: Unconventional Nuclear Weapons Detection

Description: The Defense Threat Reduction Agency, DTRA, is a federal agency charged with safeguarding the nation from weapons of mass destruction, in particular nuclear weapons such as crude devices, and radiological dispersal devices (RDD), also known as dirty bombs. Both of which could be delivered using unconventional means such as by transporting them by a car or boat. Two years ago DTRA partnered with NNSA to evaluate commercially available technologies that could be deployed quickly to defend against … more
Date: April 9, 2004
Creator: Hernandez, Jose E. & Valentine, John
Partner: UNT Libraries Government Documents Department
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2003 Chemical Engineering Division annual technical report.

Description: The Chemical Engineering Division is one of six divisions within the Engineering Research Directorate at Argonne National Laboratory, one of the U.S. government's oldest and largest research laboratories. The University of Chicago oversees the laboratory on behalf of the U.S. Department of Energy (DOE). Argonne's mission is to conduct basic scientific research, to operate national scientific facilities, to enhance the nation's energy resources, to promote national security, and to develop bette… more
Date: April 26, 2004
Creator: Lewis, D.; Graziano, D.; Miller, J. F. & Vandegrift, G.
Partner: UNT Libraries Government Documents Department

2004 DOE Hydrogen, Fuel Cells & Infrastructure Technologies Program Review Presentation COST AND PERFORMANCE ENHANCEMENTS FOR A PEM FUEL CELL TURBOCOMPRESSOR

Description: 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. Techni… more
Date: April 1, 2004
Creator: Gee, Mark K.
Partner: UNT Libraries Government Documents Department
open access

2004 Initial Assessments of Closure for the S-SX Tank Farm: Numerical Simulations

Description: 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) inv… more
Date: April 1, 2004
Creator: Zhang, Z. F.; Freedman, Vicky L.; Waichler, Scott R. & White, Mark D.
Partner: UNT Libraries Government Documents Department
open access

3D Computations and Experiments

Description: This project consists of two activities. Task A, Simulations and Measurements, combines all the material model development and associated numerical work with the materials-oriented experimental activities. The goal of this effort is to provide an improved understanding of dynamic material properties and to provide accurate numerical representations of those properties for use in analysis codes. Task B, ALE3D Development, involves general development activities in the ALE3D code with the focus o… more
Date: April 5, 2004
Creator: Couch, R; Faux, D; Goto, D & Nikkel, D
Partner: UNT Libraries Government Documents Department
open access

A 3D Frictional Segment-to-Segment Contact Method for Large Deformations and Quadratic Elements

Description: 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… more
Date: April 1, 2004
Creator: Puso, M; Laursen, T & Solberg, J
Partner: UNT Libraries Government Documents Department
open access

70193-Influence of Clastic Dikes on Vertical Migration of Contaminants in the Vadose Zonde at Hanford

Description: The purpose of this study was to examine the hypothesis that clastic dikes could form a preferential flow path through the vadose zone to the water table at the Hanford Site. Clastic dikes are subvertical structures that form within sedimentary sequences after deposition and cut across the original sedimentary layers. They are common throughout the Hanford Site, often occurring in organized polygonal networks. In the initial phase of the project, we analyzed the large-scale geometry of the clas… more
Date: April 7, 2004
Creator: Murray, Christopher J; Ward, Anderson L. & Wilson, John L.
Partner: UNT Libraries Government Documents Department
open access

AB INITIO AND CALPHAD THERMODYNAMICS OF MATERIALS

Description: Ab initio electronic structure methods can supplement CALPHAD in two major ways for subsequent applications to stability in complex alloys. The first one is rather immediate and concerns the direct input of ab initio energetics in CALPHAD databases. The other way, more involved, is the assessment of ab initio thermodynamics {acute a} la CALPHAD. It will be shown how these results can be used within CALPHAD to predict the equilibrium properties of multi-component alloys.
Date: April 14, 2004
Creator: Turchi, P A
Partner: UNT Libraries Government Documents Department
open access

Ab initio study of Al(III) adsorption on stepped {100} surfaces of KDP crystals

Description: 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-… more
Date: April 1, 2004
Creator: Salter, E A; Wierzbicki, A & Land, T A
Partner: UNT Libraries Government Documents Department
open access

Ab initio study of low-energy electron collisions withtertafluoroethene, C2F4

Description: We report the results of variational calculations of elastic electron scattering by tetrafluoroethene, C{sub 2}F{sub 4}, with incident electron energies ranging from 0.5 to 20 eV, using the complex Kohn method and effective core potentials. These are the first fully calculations to reproduce experimental angular differential cross sections at energies below 10 eV. Low-energy electron scattering by C{sub 2}F{sub 4} is sensitive to the inclusion of electronic correlation and target-distortion eff… more
Date: April 26, 2004
Creator: Trevisan, C. S.; Orel, A. E. & Rescigno, Thomas N.
Partner: UNT Libraries Government Documents Department
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