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Acquisition of Single Crystal Growth and Characterization Equipment
Final Report for DOE Grant No. DE-FG02-04ER46178 'Acquisition of Single Crystal Growth and Characterization Equipment'. There is growing concern in the condensed matter community that the need for quality crystal growth and materials preparation laboratories is not being met in the United States. It has been suggested that there are too many researchers performing measurements on too few materials. As a result, many user facilities are not being used optimally. The number of proficient crystal growers is too small. In addition, insufficient attention is being paid to the enterprise of finding new and interesting materials, which is the driving force behind much of condensed matter research and, ultimately, technology. While a detailed assessment of this situation is clearly needed, enough evidence of a problem already exists to compel a general consensus that the situation must be addressed promptly. This final report describes the work carried out during the last four years in our group, in which a state-of-the-art single crystal growth and characterization facility was established for the study of novel oxides and intermetallic compounds of rare earth, actinide and transition metal elements. Research emphasis is on the physics of superconducting (SC), magnetic, heavy fermion (HF), non-Fermi liquid (NFL) and …
Date:
December 9, 2008
Creator:
Maple, M. Brian & Zocco, Diego A.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 110, No. 107, Ed. 1 Tuesday, December 9, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 9, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 88, No. 342, Ed. 1 Tuesday, December 9, 2008
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2008
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 102, No. 99, Ed. 1 Tuesday, December 9, 2008
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
December 9, 2008
Creator:
Cartwright, Brian
Object Type:
Newspaper
System:
The Portal to Texas History
China-U.S. Relations: Current Issues and Implications for U.S. Policy
This report provides information about the Current Issues and Implications for U.S. Policy on China-U.S. Relations. China has been steadily signing trade agreements,oil and gas contracts.
Date:
December 9, 2008
Creator:
Dumbaugh, Kerry
Object Type:
Report
System:
The UNT Digital Library
Cle Elum Supplementation and Research Facility : Monthly Progress Report November 2008.
FISH PRODUCTION: Final shocking of eggs was finished in the incubation. Egg enumeration for the 2008 brood was completed and the eggs are being incubated in 38 degree Fahrenheit chilled water. Don Larsen of NOAA made a request of eggs for research purposes and was able to acquire supplemental line eggs 10,555. Estimated density at the time of ponding in Mid-March of 2009 is approximately 43,869 fry per raceway after calculating an average fry loss of 2%. The end of the month totals for the 2007 brood reports 773,807 juveniles on hand with an overall average of 31.4 fish per pound. Tagging continues on the 2007 brood and is on pace to wrap up in early December. FISH CULTURE: Ponds are cleaned as needed and due to the colder water temperatures, the feeding frequency has been changed to three days a week. All ponds are sampled at the end of the month. Growth for production fish are adjusted accordingly as temperature dictates feeding levels. Torrential rain on the 12th turned the Yakima River extremely turbid. Fish tagging operations were halted and the ensuing conditions at the facility intake screens became a concern. Water flow to the wet well became restricted …
Date:
December 9, 2008
Creator:
Facility, Cle Elum Supplementation and Research
Object Type:
Report
System:
The UNT Digital Library
Cycling of DOC and DON by Novel Heterotrophic and Photoheterotrophic Bacteria in the Ocean: Final Report
The flux of dissolved organic matter (DOM) through aquatic bacterial communities is a major process in carbon cycling in the oceans and other aquatic systems. Our work addressed the general hypothesis that the phylogenetic make-up of bacterial communities and the abundances of key types of bacteria are important factors influencing the processing of DOM in aquatic ecosystems. Since most bacteria are not easily cultivated, the phylogenetic diversity of these microbes has to be assessed using culture-independent approaches. Even if the relevant bacteria were cultivated, their activity in the lab would likely differ from that under environmental conditions. This project found variation in DOM uptake by the major bacterial groups found in coastal waters. In brief, the data suggest substantial differences among groups in the use of high and molecular weight DOM components. It also made key discoveries about the role of light in affecting this uptake especially by cyanobacteria. In the North Atlantic Ocean, for example, over half of the light-stimulated uptake was by the coccoid cyanobacterium, Prochlorococcus, with the remaining uptake due to Synechococcus and other photoheterotrophic bacteria. The project also examined in detail the degradation of one organic matter component, chitin, which is often said to be the …
Date:
December 9, 2008
Creator:
Kirchman, David L
Object Type:
Report
System:
The UNT Digital Library
The Department of Defense Role in Foreign Assistance: Background, Major Issues, and Options for Congress
This report begins with a brief introduction to the three areas in which DOD plays a role in foreign assistance and to Congress's part in authorizing that role and briefly discusses the general evolution of DOD's role and the Department of State's current perception of that role based on current national security needs. The report then provides an overview of the evolution of the DOD role and current activities in the three areas cited above, with a snapshot of the varying perspectives on the DOD roles in these areas.
Date:
December 9, 2008
Creator:
Serafino, Nina M.
Object Type:
Report
System:
The UNT Digital Library
DEVELOPMENT OF AG-1 SECTION FI ON METAL MEDIA FILTERS - 9061
Development of a metal media standard (FI) for ASME AG-1 (Code on Nuclear Air and Gas Treatment) has been under way for almost ten years. This paper will provide a brief history of the development process of this section and a detailed overview of its current content/status. There have been at least two points when dramatic changes have been made in the scope of the document due to feedback from the full Committee on Nuclear Air and Gas Treatment (CONAGT). Development of the proposed section has required resolving several difficult issues associated with scope; namely, filtering efficiency, operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality control/acceptance testing. A proposed version of Section FI is currently undergoing final revisions prior to being submitted for balloting. The section covers metal media filters of filtering efficiencies ranging from medium (less than 99.97%) to high (99.97% and greater). Two different types of high efficiency filters are addressed; those units intended to be a direct replacement of Section FC fibrous glass HEPA filters and those that will be placed into newly designed systems capable of supporting greater static pressures and differential pressures across the filter elements. Direct replacements of FC HEPA filters …
Date:
December 9, 2008
Creator:
Adamson, D & Charles A. Waggoner, C
Object Type:
Article
System:
The UNT Digital Library
Exact sub-grid interface correction schemes for elliptic interface problems
We introduce a non-conforming finite element method for second order elliptic interface problems. Our approach applies to problems in which discontinuous coefficients and singular sources on the interface may give rise to jump discontinuities in either the solution or its normal derivative. Given a standard background mesh and an interface that passes between elements, the key idea is to construct a singular correction function which satisfies the prescribed jump conditions, providing accurate sub-grid resolution of the discontinuities. Utilizing the closest point extension and an implicit interface representation by the signed distance function, an algorithm is established to construct the correction function. The result is a function which is supported only on the interface elements, represented by the regular basis functions, and bounded independently of the interface location with respect to the background mesh. In the particular case of a constant second order coefficient, our regularization by singular function is straightforward, and the resulting left-hand-side is identical to that of a regular problem without introducing any instability. The influence of the regularization appears solely on the right-hand-side, which simplifies the implementation. In the more general case of discontinuous second order coefficients, a normalization is invoked which introduces a constraint equation on …
Date:
December 9, 2008
Creator:
Huh, J. S. & Sethian, J. A.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, December 9, 2008
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 9, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Employee Awards and Incentives: Title 5 Authorities and Potential Issues for Congress
None
Date:
December 9, 2008
Creator:
Brass, Clinton T.
Object Type:
Report
System:
The UNT Digital Library
Field driven ferromagnetic phase nucleation and propagation from the domain boundaries in antiferromagnetically coupled perpendicular anisotropy films
We investigate the reversal process in antiferromagnetically coupled [Co/Pt]{sub X-1}/{l_brace}Co/Ru/[Co/Pt]{sub X-1}{r_brace}{sub 16} multilayer films by combining magnetometry and Magnetic soft X-ray Transmission Microscopy (MXTM). After out-of-plane demagnetization, a stable one dimensional ferromagnetic (FM) stripe domain phase (tiger-tail phase) for a thick stack sample (X=7 is obtained), while metastable sharp antiferromagnetic (AF) domain walls are observed in the remanent state for a thinner stack sample (X=6). When applying an external magnetic field the sharp domain walls of the thinner stack sample transform at a certain threshold field into the FM stripe domain wall phase. We present magnetic energy calculations that reveal the underlying energetics driving the overall reversal mechanisms.
Date:
December 9, 2008
Creator:
Hauet, Thomas; Gunther, Christian M.; Hovorka, Ondrej; Berger, Andreas; Im, Mi-Young; Fischer, Peter et al.
Object Type:
Article
System:
The UNT Digital Library
Government Spending or Tax Reduction: Which Might Add More Stimulus to the Economy?
This report discusses government spending and government's policy of stimulus package to boost economic activity.
Date:
December 9, 2008
Creator:
Labonte, Marc
Object Type:
Report
System:
The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 39, No. 529, Ed. 1 Tuesday, December 9, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
December 9, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 39, No. 530, Ed. 1 Tuesday, December 9, 2008
Free weekly newspaper that includes business and classified advertising.
Date:
December 9, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Microchannel Reactor System Design & Demonstration For On-Site H2O2 Production by Controlled H2/O2 Reaction
We successfully demonstrated an innovative hydrogen peroxide (H2O2) production concept which involved the development of flame- and explosion-resistant microchannel reactor system for energy efficient, cost-saving, on-site H2O2 production. We designed, fabricated, evaluated, and optimized a laboratory-scale microchannel reactor system for controlled direct combination of H2 and O2 in all proportions including explosive regime, at a low pressure and a low temperature to produce about 1.5 wt% H2O2 as proposed. In the second phase of the program, as a prelude to full-scale commercialization, we demonstrated our H2O2 production approach by ‘numbering up’ the channels in a multi-channel microreactor-based pilot plant to produce 1 kg/h of H2O2 at 1.5 wt% as demanded by end-users of the developed technology. To our knowledge, we are the first group to accomplish this significant milestone. We identified the reaction pathways that comprise the process, and implemented rigorous mechanistic kinetic studies to obtain the kinetics of the three main dominant reactions. We are not aware of any such comprehensive kinetic studies for the direct combination process, either in a microreactor or any other reactor system. We showed that the mass transfer parameter in our microreactor system is several orders of magnitude higher than what obtains in the …
Date:
December 9, 2008
Creator:
Lawal, Adeniyi
Object Type:
Report
System:
The UNT Digital Library
Multiscale integration schemes for jump-diffusion systems
We study a two-time-scale system of jump-diffusion stochastic differential equations. We analyze a class of multiscale integration methods for these systems, which, in the spirit of [1], consist of a hybridization between a standard solver for the slow components and short runs for the fast dynamics, which are used to estimate the effect that the fast components have on the slow ones. We obtain explicit bounds for the discrepancy between the results of the multiscale integration method and the slow components of the original system.
Date:
December 9, 2008
Creator:
Givon, D. & Kevrekidis, I.G.
Object Type:
Article
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 93, No. 74, Ed. 1 Tuesday, December 9, 2008
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
December 9, 2008
Creator:
Simons, Meredith
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with E. J. Billings, December 9, 2008
The National Museum of the Pacific War presents an interview with E J Billings. Billings joined the Navy V-12 program in February of 1943. He completed Navy flight school in October of 1944. He also completed additional training in aerology and navigation. He provides some details of his schooling, carrier landings and various types of planes he flew, including the SNV and the FM-2 Wildcat. He served as a pilot aboard the FM-2 and traveled to Hawaii. While in Hawaii they practiced bombing runs to support Marine landings. He completed landings aboard the USS Lunga Point (CVE-94). They traveled to Guam, Saipan, Tinian and the Philippines, though never participated in combat. Billings remained in the Reserves and was discharged in December of 1953.
Date:
December 9, 2008
Creator:
Billings, E. J.
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with E. J. Billings, December 9, 2008
The National Museum of the Pacific War presents an interview with E J Billings. Billings joined the Navy V-12 program in February of 1943. He completed Navy flight school in October of 1944. He also completed additional training in aerology and navigation. He provides some details of his schooling, carrier landings and various types of planes he flew, including the SNV and the FM-2 Wildcat. He served as a pilot aboard the FM-2 and traveled to Hawaii. While in Hawaii they practiced bombing runs to support Marine landings. He completed landings aboard the USS Lunga Point (CVE-94). They traveled to Guam, Saipan, Tinian and the Philippines, though never participated in combat. Billings remained in the Reserves and was discharged in December of 1953.
Date:
December 9, 2008
Creator:
Billings, E. J.
Object Type:
Text
System:
The Portal to Texas History
Perry Daily Journal (Perry, Okla.), Vol. 116, No. 240, Ed. 1 Tuesday, December 9, 2008
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 9, 2008
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Preserving Public Government Information: The 2008 End of Term Crawl Project
This presentation explains the End of Term Presidential Harvest, a collaborative project to preserve U.S. Government web sites at the end of the 2008 Presidential election. The Library of Congress, Internet Archive, California Digital Library, University of North Texas, and the US Government Printing Office were the participating organizations for this project.
Date:
December 9, 2008
Creator:
Grotke, Abigail; Phillips, Mark Edward & Barnum, George
Object Type:
Presentation
System:
The UNT Digital Library
Probing the spin polarization of current by soft x-ray imaging of current-induced magnetic vortex dynamics
Time-resolved soft X-ray transmission microscopy is applied to image the current-induced resonant dynamics of the magnetic vortex core realized in a micron-sized Permalloy disk. The high spatial resolution better than 25 nm enables us to observe the resonant motion of the vortex core. The result also provides the spin polarization of the current to be 0.67 {+-} 0.16 for Permalloy by fitting the experimental results with an analytical model in the framework of the spin-transfer torque.
Date:
December 9, 2008
Creator:
Kasai, Shinya; Fischer, Peter; Im, Mi-Young; Yamada, Keisuke; Nakatani, Yoshinobu; Kobayashi, Kensuke et al.
Object Type:
Article
System:
The UNT Digital Library