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Altus Times (Altus, Okla.), Vol. 107, No. 125, Ed. 1 Friday, August 26, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 26, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Ultra-Intense Laser Pulse Propagation in Gas and Plasma
It is proposed here to continue their program in the development of theories and models capable of describing the varied phenomena expected to influence the propagation of ultra-intense, ultra-short laser pulses with particular emphasis on guided propagation. This program builds upon expertise already developed over the years through collaborations with the NSF funded experimental effort lead by Professor Howard Milchberg here at Maryland, and in addition the research group at the Ecole Polytechnique in France. As in the past, close coupling between theory and experiment will continue. The main effort of the proposed research will center on the development of computational models and analytic theories of intense laser pulse propagation and guiding structures. In particular, they will use their simulation code WAKE to study propagation in plasma channels, in dielectric capillaries and in gases where self focusing is important. At present this code simulates the two-dimensional propagation (radial coordinate, axial coordinate and time) of short pulses in gas/plasma media. The plasma is treated either as an ensemble of particles which respond to the ponderomotive force of the laser and the self consistent electric and magnetic fields created in the wake of pulse or as a fluid. the plasma particle motion …
Date:
October 26, 2004
Creator:
Antonsen, T. M.
Object Type:
Report
System:
The UNT Digital Library
Saltcake Dissolution Studies in Single-Shell Tank Retrieval
Results of column dissolution experiments designed to evaluate the physical and chemical processes inherent to saltcake dissolution are presented along with model chemical equilibrium calculations. Two different compositions representing saltcakes in Hanford tanks were characterized, and porosities and permeabilities for a third composition based upon the saltcake waste in Tank 41H at the Savannah River Site (SRS) were also evaluated. Whereas the surrogates are all chemically similar, the presence of high phosphate loadings for the Hanford (HNF) simulants was noted as significantly affecting draining. The permeability was higher for the SRS saltcake, and the sodium nitrate loading in this saltcake was roughly 80% by weight compared to less than 60% by weight for the HNF compositions. Average values of the permeability and porosity were reduced for the surrogates based on Hanford Tanks S-112 and S-101. Here a secondary layer formed above the saltcake bed and was found to contain a large amount of gibbsite, Al(OH)3. Experiments with 3 molal (m) NaOH as a diluent, compared to water, did not result in additional layer formation that has been attributed to a change in local pH thereby altering the solid liquid equilibrium. Chemical analysis of the two HNF saltcakes indicated solids re-precipitation …
Date:
February 26, 2003
Creator:
Antonyraj, A.; Durve, T.; Toghiani, R. K.; Lindner, J. S. & Hunt, R.
Object Type:
Article
System:
The UNT Digital Library
Post-remediation biomonitoring of pesticides and other contaminants in marine waters and sediment near the United Heckathorn Superfund Site, Richmond, California
Marine sediment remediation at the United Heckathorn Superfund Site was completed in April 1997. Water and mussel tissues were sampled in February 1999 from four stations near Lauritzen Canal in Richmond, California, for Year 2 of post-remediation monitoring of marine areas near the United Heckathorn Site. Dieldrin and dichlorodiphenyl trichloroethane (DDT) were analyzed in water samples, tissue samples from resident mussels, and tissue samples from transplanted mussels deployed for 4 months. Concentrations of dieldrin and total DDT in water and total DDT in tissue were compared with Year 1 of post-remediation monitoring, and with preremediation data from the California State Mussel Watch program (tissues) and the Ecological Risk Assessment for the United Heckathorn Superfund Site (tissues and water). Mussel tissues were also analyzed for polychlorinated biphenyls (PCB), which were detected in sediment samples. Chlorinated pesticide concentrations in water samples were similar to preremediation levels and did not meet remediation goals. Mean dieidrin concentrations in water ranged from 0.62 rig/L to 12.5 ng/L and were higher than the remediation goal (0.14 ng/L) at all stations. Mean total DDT concentrations in water ranged from 14.4 ng/L to 62.3 ng/L and exceeded the remediation goal (0.59 ng/L) at all stations. The highest concentrations …
Date:
May 26, 2000
Creator:
Antrim, LD & Kohn, NP
Object Type:
Report
System:
The UNT Digital Library
Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California
Post-Remediation Biomonitoring of Pesticides and Other Contaminants in Marine Waters and Sediment Near the United Heckathorn Superfund Site, Richmond, California
Date:
May 26, 2000
Creator:
Antrim, Lyle D. & Kohn, Nancy P.
Object Type:
Report
System:
The UNT Digital Library
Proceedings of the RIKEN BNL Research Center Workshop on Large Scale Computations in Nuclear Physics Using the QCDOC, September 26 - 28, 2002
The massively parallel computer QCDOC (QCD On a Chip) of the RIKEN BNL Research Center (RI3RC) will provide ten-teraflop peak performance for lattice gauge calculations. Lattice groups from both Columbia University and RBRC, along with assistance from IBM, jointly handled the design of the QCDOC. RIKEN has provided $5 million in funding to complete the machine in 2003. Some fraction of this computer (perhaps as much as 10%) might be made available for large-scale computations in areas of theoretical nuclear physics other than lattice gauge theory. The purpose of this workshop was to investigate the feasibility and possibility of using a supercomputer such as the QCDOC for lattice, general nuclear theory, and other calculations. The lattice applications to nuclear physics that can be investigated with the QCDOC are varied: for example, the light hadron spectrum, finite temperature QCD, and kaon ({Delta}I = 1/2 and CP violation), and nucleon (the structure of the proton) matrix elements, to name a few. There are also other topics in theoretical nuclear physics that are currently limited by computer resources. Among these are ab initio calculations of nuclear structure for light nuclei (e.g. up to {approx}A = 8 nuclei), nuclear shell model calculations, nuclear hydrodynamics, …
Date:
September 26, 2002
Creator:
Aoki, Y.; Baltz, A.; Creutz, M.; Gyulassy, M. & Ohta, S.
Object Type:
Report
System:
The UNT Digital Library
Solvent recovery from aqueous effluent using process diluent in the caustic-side solvent extraction (CSSX) process.
In this work, solvent recovery from aqueous CSSX process raffinate effluent was tested using the process diluent (Isopar{reg_sign}L). A model was developed to obtain stage efficiency for the diluent contact stages. The model was used to fit experimental data from a 19.8-hr solvent recovery test. Diluent-in-aqueous entrainment was measured during the test. Vacuum distillation was used to concentrate the solvent components, BOBCalixC6 and modifier, in the diluent used in solvent recovery. Using the results, a feasibility study was performed to compare the annual cost of lost solvent under each of four solvent recovery options. These options were decanter tank, centrifuge, two-stage diluent contact using centrifugal contactor, and no solvent recovery action.
Date:
August 26, 2002
Creator:
Arafat, H. A.; Falkenberg, J. R. & Leonard, R. A.
Object Type:
Report
System:
The UNT Digital Library
Operational envelope for studies using magnetite to remove strontium and actinides from SRS tank waste.
This work discusses the operational envelope developed for tests involving in-situ formed magnetite to remove strontium (Sr) and actinide from Savannah River Site (SRS) waste solution. These tests will be performed at Argonne National Laboratory (ANL) in support of the SRS effort for HLW treatment. The operational envelope was developed in consultations with key personnel at SRS. Four elements of the operational envelope were identified: (1) waste simulant composition, (2) radionuclide concentrations and oxidation states, (3) minimum DF requirements, and (4) the maximum amount of magnetite that can be used per liter of waste.
Date:
August 26, 2002
Creator:
Arafat, H. A.; Gelis, A. V. & Vandegrift, G. F.
Object Type:
Report
System:
The UNT Digital Library
Virtual data in CMS production
Initial applications of the GriPhyN Chimera Virtual Data System have been performed within the context of CMS Production of Monte Carlo Simulated Data. The GriPhyN Chimera system consists of four primary components: (1) a Virtual Data Language, which is used to describe virtual data products, (2) a Virtual Data Catalog, which is used to store virtual data entries, (3) an Abstract Planner, which resolves all dependencies of a particular virtual data product and forms a location and existence independent plan, (4) a Concrete Planner, which maps an abstract, logical plan onto concrete, physical grid resources accounting for staging in/out files and publishing results to a replica location service. A CMS Workflow Planner, MCRunJob, is used to generate virtual data products using the Virtual Data Language. Subsequently, a prototype workflow manager, known as WorkRunner, is used to schedule the instantiation of virtual data products across a grid.
Date:
August 26, 2004
Creator:
Arbree, A.
Object Type:
Article
System:
The UNT Digital Library
Cybercrime: The Council of Europe Convention
Forty-three countries, including the United States, have signed the Council of Europe’s Convention on Cybercrime of November 2001. The U.S. Senate ratified the Convention on August 3, 2006. The Convention seeks to better combat cybercrime by harmonizing national laws, improving investigative abilities, and boosting international cooperation. Supporters argue that the Convention will enhance deterrence, while critics counter it will have little effect without participation by countries in which cybercriminals operate freely. Others warn it will endanger privacy and civil liberties.
Date:
April 26, 2002
Creator:
Archick, Kristin
Object Type:
Report
System:
The UNT Digital Library
European Union’s Arms Embargo on China: Implications and Options for U.S. Policy
None
Date:
January 26, 2006
Creator:
Archick, Kristin; Grimmett, Richard F. & Kan, Shirley A.
Object Type:
Report
System:
The UNT Digital Library
Prospects for Electron Imaging with Ultrafast Time Resolution
Many pivotal aspects of material science, biomechanics, and chemistry would benefit from nanometer imaging with ultrafast time resolution. Here we demonstrate the feasibility of short-pulse electron imaging with t10 nanometer/10 picosecond spatio-temporal resolution, sufficient to characterize phenomena that propagate at the speed of sound in materials (1-10 kilometer/second) without smearing. We outline resolution-degrading effects that occur at high current density followed by strategies to mitigate these effects. Finally, we present a model electron imaging system that achieves 10 nanometer/10 picosecond spatio-temporal resolution.
Date:
January 26, 2007
Creator:
Armstrong, M R; Reed, B W; Torralva, B R & Browning, N D
Object Type:
Article
System:
The UNT Digital Library
Final Technical Report for DE-FG02-97ER41038 Partial-wave Analyses of Scattering Reactions below 3 GeV, May 31, 1997 - May 31, 1999
None
Date:
June 26, 2000
Creator:
Arndt, Richard A. & Workman, R.L.
Object Type:
Report
System:
The UNT Digital Library
Radionuclide Transport Simulation Using Particle Tracking with Rock Matrix Diffusion
None
Date:
October 26, 2000
Creator:
Arnold, Bill W.; Zhang, Hubao & Robinson, Bruce A.
Object Type:
Article
System:
The UNT Digital Library
Status of the Nif Power Conditioning System
The NIF Power Conditioning System provides the pulsed excitation required to drive flashlamps in the laser's optical amplifiers. Modular in design, each of the 192 Main Energy Storage Modules (MESMs) storage up to 2.2 MJ of electrical energy in its capacitor bank before delivering the energy to 20 pairs of flashlamps in a 400 {micro}s pulse (10% power points). The peak current of each MESM discharge is 0.5 MA. Production, installation, commissioning and operation of the NIF Power Conditioning continue to progress rapidly, with the goals of completing accelerated production in late 2007 and finishing commissioning by early 2008, all the while maintaining an aggressive operations schedule. To date, more than 80% of the required modules have been assembled, shipped and installed in the facility, representing more that 240 MJ of stored energy available for driving NIF flashlamps. The MESMs have displayed outstanding reliability during daily, multiple-shift operations.
Date:
July 26, 2007
Creator:
Arnold, P.; Hulsey, S.; Ullery, G.; Petersen, D.; Pendleton, D.; Ollis, C. et al.
Object Type:
Article
System:
The UNT Digital Library
Reactive Membrane Barriers for Containment of Subsurface Contamination
The overall goal of this project was to develop reactive membrane barriers--a new and flexible technique to contain and stabilize subsurface contaminants. Polymer membranes will leak once a contaminant is able to diffuse through the membrane. By incorporating a reactive material in the polymer, however, the contaminant is degraded or immobilized within the membrane. These processes increase the time for contaminants to breakthrough the barrier (i.e. the lag time) and can dramatically extend barrier lifetimes. In this work, reactive barrier membranes containing zero-valent iron (Fe{sup 0}) or crystalline silicotitanate (CST) were developed to prevent the migration of chlorinated solvents and cesium-137, respectively. These studies were complemented by the development of models quantifying the leakage/kill time of reactive membranes and describing the behavior of products produced via the reactions within the membranes. First, poly(vinyl alcohol) (PVA) membranes containing Fe{sup 0} and CST were prepared and tested. Although PVA is not useful in practical applications, it allows experiments to be performed rapidly and the results to be compared to theory. For copper ions (Cu{sup 2+}) and carbon tetrachloride, the barrier was effective, increasing the time to breakthrough over 300 times. Even better performance was expected, and the percentage of the iron used …
Date:
February 26, 2007
Creator:
Arnold, William A. & Cussler, Edward L.
Object Type:
Report
System:
The UNT Digital Library
Preparation of Radium and Other Spent Sealed Sources Containing Long-Lived Radonuclides to Long-Term Storage
At present time management of radioactive waste containing long-lived a radionuclides, is one of the most serious problems. The complexity of the management this kind of waste is due to extended half-life of these radionuclides. Hence it is difficult to predict not only long-term behavior of packages with waste, but also conditions of containing geological medium. The spent sources containing long-lived radionuclides are not suitable for disposal in shallow ground repositories. They must be temporary stored in special engineered structures. Long terms storage of these sources require application of additional measures for diminishing of risk of incidents with them.
Date:
February 26, 2003
Creator:
Arustamov, A. E.; Ojovan, M. I.; Semenov, K. N. & Sobolev, I. A.
Object Type:
Article
System:
The UNT Digital Library
Update and Improve Subsection NH –– Alternative Simplified Creep-Fatigue Design Methods
This report described the results of investigation on Task 10 of DOE/ASME Materials NGNP/Generation IV Project based on a contract between ASME Standards Technology, LLC (ASME ST-LLC) and Japan Atomic Energy Agency (JAEA). Task 10 is to Update and Improve Subsection NH -- Alternative Simplified Creep-Fatigue Design Methods. Five newly proposed promising creep-fatigue evaluation methods were investigated. Those are (1) modified ductility exhaustion method, (2) strain range separation method, (3) approach for pressure vessel application, (4) hybrid method of time fraction and ductility exhaustion, and (5) simplified model test approach. The outlines of those methods are presented first, and predictability of experimental results of these methods is demonstrated using the creep-fatigue data collected in previous Tasks 3 and 5. All the methods (except the simplified model test approach which is not ready for application) predicted experimental results fairly accurately. On the other hand, predicted creep-fatigue life in long-term regions showed considerable differences among the methodologies. These differences come from the concepts each method is based on. All the new methods investigated in this report have advantages over the currently employed time fraction rule and offer technical insights that should be thought much of in the improvement of creep-fatigue evaluation procedures. …
Date:
October 26, 2009
Creator:
Asayama, Tai
Object Type:
Report
System:
The UNT Digital Library
Environmental Monitoring at the Savannah River Plant, Annual Report - 1973
This report summarizes results obtained from the environmental monitoring program at the Savannah River Plant during 1973. A brief discussion of plant releases to the environment and radioactivity detected in the environment is presented in the text and tables. The appendix contains tables of results from environmental sample analyses, sensitivities of laboratory analyses, and maps of sampling locations.
Date:
July 26, 2001
Creator:
Ashley, C.
Object Type:
Report
System:
The UNT Digital Library
Environmental Monitoring at the Savannah River Plant, Annual Report - 1981
An environmental monitoring program has been in existence at SRP since 1951. The original preoperational surveys have evolved into an extensive environmental monitoring program in which sample types from approximately 500 locations are analyzed for radiological and/or nonradiological parameters. The results of these analyses for 1981 are presented in this report.
Date:
July 26, 2001
Creator:
Ashley, C.
Object Type:
Report
System:
The UNT Digital Library
In Search of Shalom
Lecture given Saturday, June 26, 2004 at Abilene Christian University: "Isaiah's vision is full of images and metaphors depicting God's shalom. Today's church would do well to recapture this vision and see that one of its principal missions is to become a place where people can experience shalom in the here-and-now as well as in the hereafter."
Date:
June 26, 2004
Creator:
Ashlock, Rodney
Object Type:
Sound
System:
The Portal to Texas History
Shalom Found
Lecture given Saturday, June 26, 2004 at Abilene Christian University: "Isaiah's vision is full of images and metaphors depicting God's shalom. Today's church would do well to recapture this vision and see that one of its principal missions is to become a place where people can experience shalom in the here-and-now as well as in the hereafter."
Date:
June 26, 2004
Creator:
Ashlock, Rodney
Object Type:
Sound
System:
The Portal to Texas History
Shalom Like a River
Lecture given Saturday, June 26, 2004 at Abilene Christian University: "Isaiah's vision is full of images and metaphors depicting God's shalom. Today's church would do well to recapture this vision and see that one of its principal missions is to become a place where people can experience shalom in the here-and-now as well as in the hereafter."
Date:
June 26, 2004
Creator:
Ashlock, Rodney
Object Type:
Sound
System:
The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 94, No. 151, Ed. 1 Tuesday, May 26, 2009
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
May 26, 2009
Creator:
Atkinson, Luke
Object Type:
Newspaper
System:
The Gateway to Oklahoma History