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Greensheet (Houston, Tex.), Vol. 38, No. 53, Ed. 1 Wednesday, March 7, 2007
Free weekly newspaper that includes business and classified advertising.
Date:
March 7, 2007
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Historical Time Line and Information About the Hanford Site
Historical time line of the Hanford Site spanning from 1940 through 1997, including photographs and other information regarding the town sites and living conditions.
Date:
March 7, 2001
Creator:
Briggs, James D.
Object Type:
Report
System:
The UNT Digital Library
Studies of Flows in Plasmas
Note a pdf document "DOE-flow-final-report' should be attached. If it somehow is not please notify Walter Gekelman (gekelman@physics.ucla.edu) who will e mail it directly
Date:
March 7, 2009
Creator:
Gekelman, Walter; Morales, George & Maggs, James
Object Type:
Report
System:
The UNT Digital Library
Development of the Write Process for Pipeline-Ready Heavy Oil
Work completed under this program advances the goal of demonstrating Western Research Institute's (WRI's) WRITE{trademark} process for upgrading heavy oil at field scale. MEG Energy Corporation (MEG) located in Calgary, Alberta, Canada supported efforts at WRI to develop the WRITE{trademark} process as an oil sands, field-upgrading technology through this Task 51 Jointly Sponsored Research project. The project consisted of 6 tasks: (1) optimization of the distillate recovery unit (DRU), (2) demonstration and design of a continuous coker, (3) conceptual design and cost estimate for a commercial facility, (4) design of a WRITE{trademark} pilot plant, (5) hydrotreating studies, and (6) establish a petroleum analysis laboratory. WRITE{trademark} is a heavy oil and bitumen upgrading process that produces residuum-free, pipeline ready oil from heavy material with undiluted density and viscosity that exceed prevailing pipeline specifications. WRITE{trademark} uses two processing stages to achieve low and high temperature conversion of heavy oil or bitumen. The first stage DRU operates at mild thermal cracking conditions, yielding a light overhead product and a heavy residuum or bottoms material. These bottoms flow to the second stage continuous coker that operates at severe pyrolysis conditions, yielding light pyrolyzate and coke. The combined pyrolyzate and mildly cracked overhead streams form …
Date:
March 7, 2009
Creator:
Brecher, Lee; Mones, Charles & Guffey, Frank
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report
Through past DOE funding, the MIND Research network has funded a national consortium effort that used multi-modal neuroimaging, genetics, and clinical assessment of subjects to study schizophrenia in both first episode and persistently ill patients. Although active recruitment of research participants is complete, this consortium remains active and productive in terms of analysis of this unique multi-modal data collected on over 320 subjects.
Date:
March 7, 2008
Creator:
Rasure, John, et. al.
Object Type:
Report
System:
The UNT Digital Library
2006 Status Report Savings Estimates for the ENERGY STAR(R)Voluntary Labeling Program
ENERGY STAR(R) is a voluntary labeling program designed toidentify and promote energy-efficient products, buildings and practices.Operated jointly by the Environmental Protection Agency (EPA) and theU.S. Department of Energy (DOE), ENERGY STAR labels exist for more thanthirty products, spanning office equipment, residential heating andcooling equipment, commercial and residential lighting, home electronics,and major appliances. This report presents savings estimates for a subsetof ENERGY STAR labeled products. We present estimates of the energy,dollar and carbon savings achieved by the program in the year 2005, whatwe expect in 2006, and provide savings forecasts for two marketpenetration scenarios for the periods 2006 to 2015 and 2006 to 2025. Thetarget market penetration forecast represents our best estimate of futureENERGY STAR savings. It is based on realistic market penetration goalsfor each of the products. We also provide a forecast under the assumptionof 100 percent market penetration; that is, we assume that all purchasersbuy ENERGY STAR-compliant products instead of standard efficiencyproducts throughout the analysis period.
Date:
March 7, 2006
Creator:
Webber, Carrie A.; Brown, Richard E.; Sanchez, Marla & Homan,Gregory K.
Object Type:
Report
System:
The UNT Digital Library
"Computational Modeling of Actinide Complexes"
We will present our recent studies on computational actinide chemistry of complexes which are not only interesting from the standpoint of actinide coordination chemistry but also of relevance to environmental management of high-level nuclear wastes. We will be discussing our recent collaborative efforts with Professor Heino Nitsche of LBNL whose research group has been actively carrying out experimental studies on these species. Computations of actinide complexes are also quintessential to our understanding of the complexes found in geochemical, biochemical environments and actinide chemistry relevant to advanced nuclear systems. In particular we have been studying uranyl, plutonyl, and Cm(III) complexes are in aqueous solution. These studies are made with a variety of relativistic methods such as coupled cluster methods, DFT, and complete active space multi-configuration self-consistent-field (CASSCF) followed by large-scale CI computations and relativistic CI (RCI) computations up to 60 million configurations. Our computational studies on actinide complexes were motivated by ongoing EXAFS studies of speciated complexes in geo and biochemical environments carried out by Prof Heino Nitsche's group at Berkeley, Dr. David Clark at Los Alamos and Dr. Gibson's work on small actinide molecules at ORNL. The hydrolysis reactions of urnayl, neputyl and plutonyl complexes have received considerable attention due …
Date:
March 7, 2007
Creator:
Balasubramanian, K
Object Type:
Article
System:
The UNT Digital Library
Further studies of electron avalanche gain in liquid argon
Previously we showed how small admixtures of xenon (Xe) stabilize electron avalanches in liquid Argon (LAr). In the present work, we have measured the positive charge carrier mobility in LAr with small admixtures of Xe to be 6.4 x 10{sup -3} cm{sup 2}/Vsec, in approximate agreement with the mobility measured in pure LAr, and consistent with holes as charge carriers. We have measured the concentration of Xe actually dissolved in the liquid and compared the results with expectations based on the amount of Xe gas added to the LAr. We also have tested LAr doped with krypton to investigate the mechanism of avalanche stabilization.
Date:
March 7, 2003
Creator:
Kim, J. G.; Dardin, S. M.; Kadel, R. W.; Kadyk, J. A.; Jackson, K. H.; Peskov, V. et al.
Object Type:
Article
System:
The UNT Digital Library
Understanding and Mitigating Multicore Performance Issues on the AMD Opteron Architecture
Over the past 15 years, microprocessor performance hasdoubled approximately every 18 months through increased clock rates andprocessing efficiency. In the past few years, clock frequency growth hasstalled, and microprocessor manufacturers such as AMD have moved towardsdoubling the number of cores every 18 months in order to maintainhistorical growth rates in chip performance. This document investigatesthe ramifications of multicore processor technology on the new Cray XT4?systems based on AMD processor technology. We begin by walking throughthe AMD single-core and dual-core and upcoming quad-core processorarchitectures. This is followed by a discussion of methods for collectingperformance counter data to understand code performance on the Cray XT3?and XT4? systems. We then use the performance counter data to analyze theimpact of multicore processors on the performance of microbenchmarks suchas STREAM, application kernels such as the NAS Parallel Benchmarks, andfull application codes that comprise the NERSC-5 SSP benchmark suite. Weexplore compiler options and software optimization techniques that canmitigate the memory bandwidth contention that can reduce computingefficiency on multicore processors. The last section provides a casestudy of applying the dual-core optimizations to the NAS ParallelBenchmarks to dramatically improve their performance.
Date:
March 7, 2007
Creator:
Levesque, John; Larkin, Jeff; Foster, Martyn; Glenski, Joe; Geissler, Garry; Whalen, Stephen et al.
Object Type:
Report
System:
The UNT Digital Library
Regional Ecosystem-Atmosphere CO2 Exchange Via Atmospheric Budgets
Inversions of atmospheric CO2 mixing ratio measurements to determine CO2 sources and sinks are typically limited to coarse spatial and temporal resolution. This limits our ability to evaluate efforts to upscale chamber- and stand-level CO2 flux measurements to regional scales, where coherent climate and ecosystem mechanisms govern the carbon cycle. As a step towards the goal of implementing atmospheric budget or inversion methodology on a regional scale, a network of five relatively inexpensive CO2 mixing ratio measurement systems was deployed on towers in northern Wisconsin. Four systems were distributed on a circle of roughly 150-km radius, surrounding one centrally located system at the WLEF tower near Park Falls, WI. All measurements were taken at a height of 76 m AGL. The systems used single-cell infrared CO2 analyzers (Licor, model LI-820) rather than the siginificantly more costly two-cell models, and were calibrated every two hours using four samples known to within ± 0.2 ppm CO2. Tests prior to deployment in which the systems sampled the same air indicate the precision of the systems to be better than ± 0.3 ppm and the accuracy, based on the difference between the daily mean of one system and a co-located NOAA-ESRL system, is consistently …
Date:
March 7, 2007
Creator:
Davis, K. J.; Richardson, S. J. & Miles, N. L.
Object Type:
Report
System:
The UNT Digital Library
An X-ray Absorption Edge Detector for High-Resolution Measurement of Undulator Effective K-Parameter
The spectrum of angle-integrated undulator radiation displays a sharp edge at every harmonic photon energy. A technique utilizing this feature to measure minute changes in K-parameters of an undulator in a free-electron laser has been proposed. To date, this technique requires the use of crystal monochromators as bandpass filters whose energy centroid depends on the incident angle of the x-ray beam. In this work we propose to use the absorption edge of an appropriate element as an energy-selective detector whose response is truly independent of the angle of the x-ray beam, and hence independent of electron beam direction and emittance. We will discuss the basic design concept of the detection system and illustrate its projected performance with computer simulations.
Date:
March 7, 2007
Creator:
Yang, B.; /Argonne & Galayda, J.N.
Object Type:
Article
System:
The UNT Digital Library
AN ACCELERATED RATE CALORIMETRY STUDY OF CAUSTIC-SIDE SOLVENT EXTRACTION SOLVENT WITHOUT EXTRACTANT
This study found that 4 - 48 part per thousand (ppth) of Caustic Side Solvent Extraction (CSSX) solvent without extractant in caustic salt solution at evaporator-relevant temperatures result in no process-significant energetic events. However, the data suggest a chemical reaction (possible decomposition) in the CSSX solvent near 140 C. This concentration of entrained solvent is believed to markedly exceed the amount of solvent that will pass from the Modular Caustic Side Solvent Unit (MCU) through the downstream Defense Waste Processing Facility and enter the evaporator through routine tank farm operations. The rate of pressure rise at 140 C differs appreciably - i.e., is reduced - for salt solution containing the organic from that of the same solution without solvent. This behavior is due to a reaction between the CSSX components and the salt solution simulant.
Date:
March 7, 2006
Creator:
Fondeur, F & Samuel Fink, S
Object Type:
Report
System:
The UNT Digital Library
2005 Status Report Savings Estimates for the ENERGY STAR(R)Voluntary Labeling Program
ENERGY STAR(R) is a voluntary labeling program designed toidentify and promote energy-efficient products, buildings and practices.Operated jointly by the Environmental Protection Agency (EPA) and theU.S. Department of Energy (DOE), Energy Star labels exist for more thanforty products, spanning office equipment, residential heating andcooling equipment, commercial and residential lighting, home electronics,and major appliances. This report presents savings estimates for a subsetof ENERGY STAR labeled products. We present estimates of the energy,dollar and carbon savings achieved by the program in the year 2004, whatwe expect in 2005, and provide savings forecasts for two marketpenetration scenarios for the periods 2005 to 2010 and 2005 to 2020. Thetarget market penetration forecast represents our best estimate of futureENERGY STAR savings. It is based on realistic market penetration goalsfor each of the products. We also provide a forecast under the assumptionof 100 percent market penetration; that is, we assume that all purchasersbuy ENERGY STAR-compliant products instead of standard efficiencyproducts throughout the analysis period.
Date:
March 7, 2006
Creator:
Webber, Carrie A.; Brown, Richard E. & Sanchez, Marla
Object Type:
Report
System:
The UNT Digital Library
Final Technical Report: Genetic Control of Nitrogen Assimilation in Klebsiella oxytoca.
Klebsiella oxytoca, an enterobacterium closely related to Escherichia coli and amenable to molecular genetic analysis, is a long-established model organism for studies of bacterial nitrogen assimilation. Our work concerned utilization of purines, nitrogen-rich compounds that are widespread in the biosphere. This project began with our observation that molybdenum cofactor (chlorate-resistant) mutants can use (hypo)xanthine as sole nitrogen source (Garzón et al., J. Bacteriol. 174:6298, 1992). Since xanthine dehydrogenase is a molybdoenzyme, Klebsiella must use an alternate route for (hypo)xanthine catabolsim. We identified and characterized a cluster of 22 genes that encode the enzymes, permeases and regulators for utilizing hypoxanthine and xanthine as sole nitrogen source. (Hypoxanthine and xanthine arise from deamination of adenine and guanine, respectively.) Growth and complementation tests with insertion mutants, combined with protein sequence comparisons, allow us to assign probable functions for the products of these genes and to deduce the overall pathway. We present genetic evidence that the first two enzymes for the Klebsiella purine utilization pathway have been recruited from pathways involved in catabolism of aromatic compounds. The first, HxaAB enzyme catalyzing (hypo)xanthine oxidation, is related to well-studied aromatic ring hydroxylating oxygenases such as phthalate dioxygenase. The second, HxbA enzyme catalyzing urate hydroxylation, is related …
Date:
March 7, 2007
Creator:
Stewart, Valley
Object Type:
Report
System:
The UNT Digital Library
Color and Variability Characteristics of Point Sources in the Faint Sky Variability Survey
The authors present an analysis of the color and variability characteristics for point sources in the Faint Sky Variability Survey (FSVS). The FSVS cataloged {approx} 23 square degrees in BVI filters from {approx} 16-24 mag to investigate variability in faint sources at moderate to high Galactic latitudes. Point source completeness is found to be >83% for a selected representative sample (V - 17.5-22.0 mag, B-V = 0.0-1.5) containing both photometric B, V detections and 80% of the time-sampled V data available compared to a basic internal source completeness of 99%. Multi-epoch (10-30) observations in V spanning minutes to years modeled by light curve simulations reveal amplitude sensitivities to {approx} 0.015-0.075 mag over a representative V = 18-22 mag range. Periodicity determinations appear viable to time-scales of an order 1 day or less using the most sampled fields ({approx} 30 epochs). The fraction of point sources is found to be generally variable at 5-8% over V = 17.5-22.0 mag. For V brighter than 19 mag, the variable population is dominated by low amplitude (< 0.05 mag) and blue (B-V < 0.35) sources, possibly representing a population of {gamma} Doradus stars. Overall, the dominant population of variable sources are bluer than B-V …
Date:
March 7, 2005
Creator:
Huber, M E; Everett, M E & Howell, S B
Object Type:
Article
System:
The UNT Digital Library
Field Demonstration of Carbon Dioxide Miscible Flooding in the Lansing-Kansas City Formation, Central Kansas
A pilot carbon dioxide miscible flood was initiated in the Lansing Kansas City C formation in the Hall Gurney Field, Russell County, Kansas. The reservoir zone is an oomoldic carbonate located at a depth of about 2900 feet. The pilot consists of one carbon dioxide injection well and three production wells. Continuous carbon dioxide injection began on December 2, 2003. By the end of June 2005, 16.19 MM lb of carbon dioxide were injected into the pilot area. Injection was converted to water on June 21, 2005 to reduce operating costs to a breakeven level with the expectation that sufficient carbon dioxide has been injected to displace the oil bank to the production wells by water injection. By December 31, 2006, 79,072 bbls of water were injected into CO2 I-1 and 3,923 bbl of oil were produced from the pilot. Water injection rates into CO2 I-1, CO2 No.10 and CO2 No.18 were stabilized during this period. Oil production rates increased from 4.7 B/D to 5.5 to 6 B/D confirming the arrival of an oil bank at CO2 No.12. Production from wells to the northwest of the pilot region indicates that oil displaced from carbon dioxide injection was produced from Colliver …
Date:
March 7, 2007
Creator:
Byrnes, Alan; Willhite, G. Paul; Green, Don; Dubois, Martin; Pancake, Richard; Carr, Timothy et al.
Object Type:
Report
System:
The UNT Digital Library
Final Report: 17th international Symposium on Plant Lipids
This meeting covered several emerging areas in the plant lipid field such as the biosynthesis of cuticle components, interorganelle lipid trafficking, the regulation of lipid homeostasis, and the utilization of algal models. Stimulating new insights were provided not only based on research reports based on plant models, but also due to several excellent talks by experts from the yeast field.
Date:
March 7, 2007
Creator:
Benning, Christoph
Object Type:
Text
System:
The UNT Digital Library
Lethality Effects of a High-Power Solid-State Laser
We study the material interactions of a 25-kW solid-state laser, in experiments characterized by relatively large spot size sizes ({approx}3 cm) and the presence of airflow. The targets are 1-cm slabs of iron or aluminum. In the experiments with iron, we show that combustion plays an important role in heating the material. In the experiments with aluminum, there is a narrow range of intensities within which the material interactions vary from no melting at all to complete melt-through. A paint layer serves to increase the absorption. We explain these effects and incorporate them into a comprehensive computational model.
Date:
March 7, 2007
Creator:
Boley, C.; Fochs, S. & Rubenchik, A.
Object Type:
Article
System:
The UNT Digital Library
The Wylie News (Wylie, Tex.), Vol. 59, No. 42, Ed. 1 Wednesday, March 7, 2007
Weekly newspaper from Wylie, Texas that includes local, state and national news along with advertising.
Date:
March 7, 2007
Creator:
Engbrock, Chad B.
Object Type:
Newspaper
System:
The Portal to Texas History
Interview with Bob Tiffany, March 7, 2000
A videorecording of an interview with Abilene (Texas) civic leader Bob Tiffany, conducted by Dr. Gary McCaleb of Abilene Christian University. In the interview, Tiffany discusses the history of Camp Barkeley during World War II. The video is part of the Abilene 2000 Series of McCaleb & Company videos.
Date:
March 7, 2000
Creator:
Tiffany, Bob & McCaleb, Gary
Object Type:
Video
System:
The Portal to Texas History
The Ranger (San Antonio, Tex.), Vol. 77, No. 18, Ed. 1 Friday, March 7, 2003
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
March 7, 2003
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 17, No. 11, Ed. 1 Thursday, March 7, 2002
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
March 7, 2002
Creator:
Ritch, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 44, Ed. 1 Thursday, March 7, 2002
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
March 7, 2002
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 120, No. 19, Ed. 1 Thursday, March 7, 2002
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
March 7, 2002
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History