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397 Matching Results
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Iraq: U.S. Regime Change Efforts and Post-Saddam Governance
Operation Iraqi Freedom accomplished a long-standing objective, the overthrow and capture of Saddam Hussein, but replacing that regime with a stable, moderate, democratic political structure has run into difficulty. Past U.S. efforts to change the regime failed because of limited U.S. commitment, disorganization of the Iraqi opposition, and the efficiency and ruthlessness of Iraq’s several overlapping security services. Previous U.S. Administrations had ruled out major U.S. military action to change Iraq’s regime, believing such action would be risky and not necessarily justified by the level of Iraq’s lack of compliance on WMD disarmament.
Date:
January 7, 2004
Creator:
Katzman, Kenneth
Object Type:
Report
System:
The UNT Digital Library
Isotopic evidence of magmatism and a sedimentary carbon source at the Endeavour hydrothermal system
Stable and radiocarbon isotope measurements made on CO{sub 2} from high temperature hydrothermal vents on the Endeavour Segment of the Juan de Fuca Ridge indicate both magmatic and sedimentary sources of carbon to the hydrothermal system. The Endeavour segment is devoid of overlying sediments and has shown no observable signs of surficial magmatic activity during the {approx}20 years of ongoing studies. The appearance of isotopically heavy, radiocarbon dead CO{sub 2} after a 1999 earthquake swarm requires that this earthquake event was magmatic in origin. Evidence for a sedimentary organic carbon source suggests the presence of buried sediments at the ridge axis. These findings, which represent the first temporally coherent set of radiocarbon measurements from hydrothermal vent fluids, demonstrate the utility of radiocarbon analysis in hydrothermal studies. The existence of a sediment source at Endeavour and the occurrence of magmatic episodes illustrate the extremely complex and evolving nature of the Endeavour hydrothermal system.
Date:
January 7, 2004
Creator:
Brown, T A; Proskurowski, G & Lilley, M D
Object Type:
Article
System:
The UNT Digital Library
Laser Performance Operations Model (LPOM)
The Laser Performance Operations Model (LPOM) has been developed to provide real time predictive capabilities for the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory. LPOM uses diagnostic feedback from previous NIF shots to maintain accurate energetics models for each of the 192 NIF beamlines (utilizing one CPU per laser beamline). This model is used to determine the system setpoints (initial power, waveplate attenuations, laser diagnostic settings) required for all requested NIF shots. In addition, LPOM employs optical damage models to minimize the probability that a proposed shot may damage the system. LPOM provides post-shot diagnostic reporting to support the NIF community. LPOM was deployed prior to the first main laser shots in NIF, and has since been used to set up every shot in NIF's first quad (four beamlines). Real-time adjustments of the codes energetics parameters allows the LPOM to predict total energies within 5%, and provide energy balance within the four beamlines to within 2% for shots varying from 0.5 to 26 kJ (1.053 {micro}m) per beamline. The LPOM has been a crucial tool in the commissioning of the first quad of NIF.
Date:
January 7, 2004
Creator:
Shaw, M; Williams, W; House, R & Haynam, C
Object Type:
Article
System:
The UNT Digital Library
Mannford Eagle (Mannford, Okla.), Vol. 22, No. 36, Ed. 1 Wednesday, January 7, 2004
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
Retherford, Bill R.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mercedes Enterprise (Mercedes, Tex.), Vol. 92, No. 1, Ed. 1 Wednesday, January 7, 2004
Weekly newspaper from Mercedes, Texas that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Panola Watchman (Carthage, Tex.), Vol. 131, No. 2, Ed. 1 Wednesday, January 7, 2004
Semiweekly newspaper from Carthage, Texas that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Pawhuska Journal-Capital (Pawhuska, Okla.), Vol. 95, No. 55, Ed. 1 Wednesday, January 7, 2004
Weekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
Gann, Sherry
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 111, No. 4, Ed. 1 Wednesday, January 7, 2004
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Reinforcement of Aluminum Castings with Dissimilar Metals
The project ''Reinforcement of Aluminum Casting with Dissimilar Metal'' was a Cooperative Research and Development Agreements (CRADAs) between Oak Ridge National Laboratory (ORNL) and Cummins Inc. This project, technologies have been developed to reinforce aluminum castings with steel insert. Defect-free bond between the steel insert and the aluminum casting has been consistently obtained. The push-out experiment indicated that the bond strength is higher than that of the Al-Fin method. Two patents have been granted to the project team that is comprised of Cummins Inc. and ORNL. This report contains four sections: the coating of the steel pins, the cast-in method, microstructure characterization, and the bond strength. The section of the coating of the steel pins contains coating material selection, electro-plating technique for plating Cu and Ni on steel, and diffusion bonding of the coatings to the steel. The section of cast-in method deals with factors that affecting the quality of the metallurgical bond between the coated steel and the aluminum castings. The results of microstructure characteristics of the bonding are presented in the microstructure characterization section. A push-out experiment and the results obtained using this method is described in the section of bond strength/mechanical property.
Date:
January 7, 2004
Creator:
Han, Q
Object Type:
Report
System:
The UNT Digital Library
RESULTS OF CHARACTERIZATION TESTS OF THE SURFACES OF A COMMERCIALLY CARBURIZED AUSTENITIC STAINLESS STEEL
A commercial surface carburization treatment that shows promise for hardening the surfaces of the stainless steel target vessel of the Spallation Neutron Source against cavitation erosion and pitting caused by the action of pulsed pressure waves in the liquid mercury target has been investigated. To verify promotional claims for the treatment and to uncover any factors that might be of concern for the integrity of a carburized target vessel, some characterization tests of the nature of the surface layers of carburized austenitic 316LN stainless steel were conducted. The findings support most of the claims. The carburized layer is about 35 {micro}m thick. Its indentation hardness is about five times larger than that of the substrate steel and declines rapidly with depth into the layer. The surface is distorted by the treatment, and the austenite lattice is enlarged. The corrosion resistance of the carburized layer in an acid medium is greater than that for untreated austenite. The layer is not brittle; it is plastically deformable and is quite resistant to cracking during straining. Contrary to the provider's assertations, the maximum carbon content of the layer is much less than 6-7 wt% carbon, and the carbon is not simply contained in supersaturated …
Date:
January 7, 2004
Creator:
Farrell, K
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 88, No. 101, Ed. 1 Wednesday, January 7, 2004
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 7, 2004
Creator:
Broaddus, Matthew B.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Saturation of a High Grain Single-Pass Fel.
We study a perturbation expansion for the solution of the nonlinear one-dimensional FEL equations. We show that in the case of a monochromatic wave, the radiated intensity satisfies a scaling relation that implies, for large distance z traveled along the undulator, a change in initial value of the radiation field corresponds to a translation in z (lethargy). Analytic continuation using Pade approximates yields accurate results for the radiation field early in saturation.
Date:
January 7, 2004
Creator:
Krinsky, S.
Object Type:
Article
System:
The UNT Digital Library
Seminole Sentinel (Seminole, Tex.), Vol. 95, No. 25, Ed. 1 Wednesday, January 7, 2004
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
January 7, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Senate Legislative Procedures: Published Sources of Information
The Senate publishes its rules, precedents, and other related information so that Senators and their staff have convenient access to the Senate’s legislative procedures and can gauge how those procedures are likely to apply in various situations. Information about the Senate’s legislative procedures is published in four official documents. This report discusses these documents.
Date:
January 7, 2004
Creator:
Davis, Christopher M.
Object Type:
Report
System:
The UNT Digital Library
Summary Document of Workshops for Hanford, Oak Ridge and Savannah River Site as part of the Monitored Natural Attenuation and Enhanced Passive Remediation for Chlorinated Solvents - DOE Alternative Project for Technology Acceleration
This document summarizes the result of a series of meetings with regulators, stakeholders, tribal representatives, and end users. The meetings focused on providing information from the Monitored Natural Attenuation and Enhanced Passive Remediation for Chlorinated Solvents, DOE Alternative Project for Technology Acceleration and eliciting feedback on the direction of the project, its usefulness, and its applicability to issues faced by the participants. The meetings were held with the DOE and operating contractor personnel working at and stakeholders/tribal representatives associated with the Hanford, Oak Ridge and Savannah River Sites, as well as EPA regions IV and X and state regulators from Washington, Tennessee and South Carolina. These meetings were conducted over the time period beginning August 12 and culminating September 23, 2003. Approximately 120 people participated in these meetings.
Date:
January 7, 2004
Creator:
Vangelas, Karen M.
Object Type:
Report
System:
The UNT Digital Library
Summary Document of Workshops for Hanford, Oak Ridge and Savannah River Site as part of the Monitored Natural Attenuation and Enhanced Passive Remediation for Chlorinated Solvents - DOE Alternative Project for Technology Acceleration
This document summarizes the result of a series of meetings with regulators,stakeholders, tribal representatives, and end users. The meetings focused on providing information from the Monitored Natural Attenuation and Enhanced Passive Remediation for Chlorinated Solvents, DOE Alternative Project for Technology Acceleration and eliciting feedback on the direction of the project, its usefulness, and its applicability to issues faced by the participants. The meetings were held with the DOE and operating contractor personnel working at and stakeholders/tribal representatives associated with the Hanford, Oak Ridge and Savannah River Sites, as well as EPA regions IV and X and state regulators from Washington, Tennessee and South Carolina. These meetings were conducted over the time period beginning August 12 and culminating September 23, 2003. Approximately 120 people participated in these meetings.
Date:
January 7, 2004
Creator:
Vangelas, Karen M.
Object Type:
Report
System:
The UNT Digital Library
Termination Report
The results of this project include: (1) Development of econometrically estimated marginal abatement and associated production curves describing response of agricultural and forestry emissions/sink/offsets enhancements for use in integrated assessments. Curves were developed that reflected agricultural, and forestry production of traditional commodities, carbon and other greenhouse gas offsets and biofuels given signals of general commodity demand, and carbon and energy prices. (2) Integration of the non-dynamic curves from (1) into a version of the PNNL SGM integrated assessment model was done in cooperation with Dr. Ronald Sands at PNNL. The results were reported at the second DOE conference on sequestration in the paper listed and the abstract is in Annex B of this report. (3) Alternative agricultural sequestration estimates were developed in conjunction with personnel at Colorado State University using CENTURY and analyses can operate under the use of agricultural soil carbon data from either the EPIC or CENTURY models. (4) A major effort was devoted to understanding the possible role and applicable actions from agriculture. (5) Work was done with EPA and EIA to update the biofuel data and assumptions resulting in some now emerging results showing the criticality of biofuel assumptions.
Date:
January 7, 2004
Creator:
Dhazngilly, Bruce McCarl and
Object Type:
Report
System:
The UNT Digital Library
Termination Report. Supply Curves for Agricultural and Forestry Greenhouse Gas Emissions and their Use in Integrated Assessments: Methodology and Case Development
OAK-B135 The results produced by this project include: (1) Development of econometrically estimated marginal abatement and associated production curves describing response of agricultural and forestry emissions/sink/offsets enhancements for use in integrated assessments. Curves were developed that reflected agricultural, and forestry production of traditional commodities, carbon and other greenhouse gas offsets and biofuels given signals of general commodity demand, and carbon and energy prices. This work was done jointly with Dr. Ronald Sands at PNNL. A paper from this is forthcoming as follows Gillig, D., B.A. McCarl, and R.D. Sands, ''Integrating Agricultural and Forestry GHG Mitigation Response into General Economy Frameworks: Developing a Family of Response Functions,'' Mitigation and Adaptation Strategies for Global Change, forthcoming, 2004. An additional effort was done involving dynamics and a second paper was prepared that is annex A to this report and is Gillig, D., and B.A. McCarl, ''Integrating Agricultural and Forestry Response to GHG Mitigation into General Economy Frameworks: Developing a Family of Response Functions using FASOM,'' 2004. (2) Integration of the non dynamic curves from (1) into in a version of the PNNL SGM integrated assessment model was done in cooperation with Dr. Ronald Sands at PNNL. The results were reported at the second …
Date:
January 7, 2004
Creator:
McCarl, Bruce & Gillig, Dhazn
Object Type:
Report
System:
The UNT Digital Library
Transport Visualization for Studying Mass Trasnfer and Solute Transport in Permeable Media
Understanding and predicting mass transfer coupled with solute transport in permeable media is central to several energy-related programs at the US Department of Energy (e.g., CO{sub 2} sequestration, nuclear waste disposal, hydrocarbon extraction, and groundwater remediation). Mass transfer is the set of processes that control movement of a chemical between mobile (advection-dominated) domains and immobile (diffusion- or sorption-dominated) domains within a permeable medium. Consequences of mass transfer on solute transport are numerous and may include (1) increased sequestration time within geologic formations; (2) reduction in average solute transport velocity by as much as several orders of magnitude; (3) long ''tails'' in concentration histories during removal of a solute from a permeable medium; (4) poor predictions of solute behavior over long time scales; and (5) changes in reaction rates due to mass transfer influences on pore-scale mixing of solutes. Our work produced four principle contributions: (1) the first comprehensive visualization of solute transport and mass transfer in heterogeneous porous media; (2) the beginnings of a theoretical framework that encompasses both macrodispersion and mass transfer within a single set of equations; (3) experimental and analytical tools necessary for understanding mixing and aqueous reaction in heterogeneous, granular porous media; (4) a clear experimental …
Date:
January 7, 2004
Creator:
Haggerty, Roy
Object Type:
Report
System:
The UNT Digital Library
U.N. Convention on the Law of the Sea: Living Resources Provisions
None
Date:
January 7, 2004
Creator:
Buck, Eugene H.
Object Type:
Report
System:
The UNT Digital Library
USA PATRIOT Act Sunset: A Sketch
None
Date:
January 7, 2004
Creator:
Doyle, Charles
Object Type:
Report
System:
The UNT Digital Library
Use of Burnup Credit as a Safety Factor in Handling of NIST Fuel Assemblies in the L Basin of SRS
Burnup credit was recently used for the first time in criticality safety analysis to support the handling of the National Institute of Standards and Technology spent fuel assemblies in the L Basin of Savannah River Site. Previous criticality safety analyses were based on the fissile content of fresh, unirradiated fuel assemblies, resulting in handling of a group of 10 or less fuel assemblies at a time. Using burnup credit, it was demonstrated that an isolated configuration of up to 14 NITS fuel assemblies, the maximum number of fuel assemblies in a full basket, submerged in a concrete-lined, water-filled pool is subcritical, resulting in several administrative controls being modified or eliminated without compromising safety.
Date:
January 7, 2004
Creator:
Eghbali, DA
Object Type:
Article
System:
The UNT Digital Library
Using Carbon-14 Isotope Tracing to Investigate Molecular Structure Effects of the Oxygenate Dibutyl Maleate on Soot Emissions from a DI Diesel Engine
The effect of oxygenate molecular structure on soot emissions from a DI diesel engine was examined using carbon-14 ({sup 14}C) isotope tracing. Carbon atoms in three distinct chemical structures within the diesel oxygenate dibutyl maleate (DBM) were labeled with {sup 14}C. The {sup 14}C from the labeled DBM was then detected in engine-out particulate matter (PM), in-cylinder deposits, and CO{sub 2} emissions using accelerator mass spectrometry (AMS). The results indicate that molecular structure plays an important role in determining whether a specific carbon atom either does or does not form soot. Chemical-kinetic modeling results indicate that structures that produce CO{sub 2} directly from the fuel are less effective at reducing soot than structures that produce CO before producing CO{sub 2}. Because they can follow individual carbon atoms through a real combustion process, {sup 14}C isotope tracing studies help strengthen the connection between actual engine emissions and chemical-kinetic models of combustion and soot formation/oxidation processes.
Date:
January 7, 2004
Creator:
Buchholz, B. A.; Mueller, C. J.; Upatnieks, A.; Martin, G. C.; Pitz, W. J. & Westbrook, C. K.
Object Type:
Article
System:
The UNT Digital Library
Věstník (Temple, Tex.), Vol. 92, No. 1, Ed. 1 Wednesday, January 7, 2004
Weekly Czech and English language newspaper from Temple, Texas published as the official organ of the Slavonic Benevolent Order of the State of Texas that includes news of interest to members along with advertising.
Date:
January 7, 2004
Creator:
Vanicek, Brian
Object Type:
Newspaper
System:
The Portal to Texas History