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West Texas A & M University Historically Underutilized Business Strategic Plan: 2009
Report on a plan for West Texas A&M University outlining goals, objectives, measures, and other information about working with Historically Underutilized Businesses during fiscal year 2009.
Date:
2008?
Creator:
West Texas A & M University
Object Type:
Text
System:
The Portal to Texas History
West Texas Freight Study
This is a study to evaluate the existing freight transportation infrastructure and identify potential improvements to improve freight mobility in the Amarillo District, Lubbock District, and Odessa District. The study seeks to evaluate freight movements and operation within the Districts to improve efficiency, determine financial viability, and analysis additional freight corridors.
Date:
January 2008
Creator:
HNTB Corporation
Object Type:
Text
System:
The Portal to Texas History
When superfluids are a drag
The article considers the dramatic phenomenon of seemingly frictionless flow of slow-moving superfluids. Specifically the question of whether an object in a superfluid flow experiences any drag force is addressed. A brief account is given of the history of this problem and it is argued that recent advances in ultracold atomic physics can shed much new light on this problem. The article presents the commonly held notion that sufficiently slow-moving superfluids can flow without drag and also discusses research suggesting that scattering quantum fluctuations might cause drag in a superfluid moving at any speed.
Date:
January 1, 2008
Creator:
Roberts, David C
Object Type:
Article
System:
The UNT Digital Library
The White House Symposium on Advancing Global Literacy
This Website documented the White House Symposium on Advancing Global Literacy that held in New York City, New York, on September 22, 2008. The site also included the contents of the six UNESCO Regional Conferences in Support of Global Literacy: -Literacy Challenges in the Arab Region (Doha, Qatar – March 12 – 14, 2007) -Literacy Challenges in East Asia, Southeast Asia and the Pacific (Beijing, China – July 31 - August 1, 2007) -Renewing Literacy to Face African and International Challenges (Bamako, Mali – September 10 - 12, 2007) -Literacy Challenges in the South, Southwest and Central Asia (New Delhi, India – November 29 – 30, 2007) -Addressing Literacy Challenges in Europe with a Sub-Regional Focus (Baku, Azerbaijan – May 14 – 16, 2008) -Regional Literacy Conference in Latin America and the Caribbean (Mexico City, Mexico – September 10 – 13, 2008)
Date:
2008
Creator:
United States. White House Office.
Object Type:
Website
System:
The UNT Digital Library
World average top-quark mass
This paper summarizes a talk given at the Top2008 Workshop at La Biodola, Isola d Elba, Italy. The status of the world average top-quark mass is discussed. Some comments about the challanges facing the experiments in order to further improve the precision are offered.
Date:
January 1, 2008
Creator:
Glenzinski, D.
Object Type:
Article
System:
The UNT Digital Library
X-Ray Absorption Spectroscopy of Yb3+-Doped Optical Fibers
Optical fibers doped with Ytterbium-3+ have become increasingly common in fiber lasers and amplifiers. Yb-doped fibers provide the capability to produce high power and short pulses at specific wavelengths, resulting in highly effective gain media. However, little is known about the local structure, distribution, and chemical coordination of Yb3+ in the fibers. This information is necessary to improve the manufacturing process and optical qualities of the fibers. Five fibers doped with Yb3+ were studied using Extended X-ray Absorption Fine Structure (EXAFS) spectroscopy and X-ray Absorption Near Edge Spectroscopy (XANES), in addition to Yb3+ mapping. The Yb3+ distribution in each fiber core was mapped with 2D and 1D intensity scans, which measured X-ray fluorescence over the scan areas. Two of the five fibers examined showed highly irregular Yb3+ distributions in the core center. In four of the five fibers Yb3+ was detected outside of the given fiber core dimensions, suggesting possible Yb3+ diffusion from the core, manufacturing error, or both. X-ray absorption spectroscopy (XAS) analysis has so far proven inconclusive, but did show that the fibers had differing EXAFS spectra. The Yb3+ distribution mapping proved highly useful, but additional modeling and examination of fiber preforms must be conducted to improve XAS …
Date:
January 1, 2008
Creator:
Citron, Robert & Kropf, A. Jeremy
Object Type:
Article
System:
The UNT Digital Library
X-ray line polarization spectroscopy of Li-like satellite line spectra
We apply the magnetic-sublevel atomic kinetics model POLAR to the calculation of polarization properties of satellite lines in Li-like Si driven by subpicosecond-duration laser pulses. We identify spectral lines whose polarization can serve as a marker of plasma anisotropy due to anisotropy in the electron distribution function. We also discuss the utility and limitations of ur current theoretical approach and point out possible future improvements and directions.
Date:
January 1, 2008
Creator:
Sherrill, Manolo Edgar; Abdallah, Joseph; Zhang, Honglin; Hakel, Peter & Mancini, Roberto C
Object Type:
Article
System:
The UNT Digital Library
Zirconium Oxide Nanostructures Prepared by Anodic Oxidation
Zirconium oxide is an advanced ceramic material highly useful for structural and electrical applications because of its high strength, fracture toughness, chemical and thermal stability, and biocompatibility. If highly-ordered porous zirconium oxide membranes can be successfully formed, this will expand its real-world applications, such as further enhancing solid-oxide fuel cell technology. Recent studies have achieved various morphologies of porous zirconium oxide via anodization, but they have yet to create a porous layer where nanoholes are formed in a highly ordered array. In this study, electrochemical methods were used for zirconium oxide synthesis due to its advantages over other coating techniques, and because the thickness and morphology of the ceramic fi lms can be easily tuned by the electrochemical parameters, such as electrolyte solutions and processing conditions, such as pH, voltage, and duration. The effects of additional steps such as pre-annealing and post-annealing were also examined. Results demonstrate the formation of anodic porous zirconium oxide with diverse morphologies, such as sponge-like layers, porous arrays with nanoholes ranging from 40 to 75 nm, and nanotube layers. X-ray powder diffraction analysis indicates a cubic crystallographic structure in the zirconium oxide. It was noted that increased voltage improved the ability of the membrane to …
Date:
January 1, 2008
Creator:
Dang, Y. Y.; Bhuiyan, M.S. & Paranthaman, M. P.
Object Type:
Article
System:
The UNT Digital Library