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The Greensheet (Houston, Tex.), Vol. 41, No. 37, Ed. 1 Tuesday, February 23, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
February 23, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 38, Ed. 1 Tuesday, February 23, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
February 23, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
HF-based etching processes for improving laser damage resistance of fused silica optical surfaces
The effect of various HF-based etching processes on the laser damage resistance of scratched fused silica surfaces has been investigated. Conventionally polished and subsequently scratched fused silica plates were treated by submerging in various HF-based etchants (HF or NH{sub 4}F:HF at various ratios and concentrations) under different process conditions (e.g., agitation frequencies, etch times, rinse conditions, and environmental cleanliness). Subsequently, the laser damage resistance (at 351 or 355 nm) of the treated surface was measured. The laser damage resistance was found to be strongly process dependent and scaled inversely with scratch width. The etching process was optimized to remove or prevent the presence of identified precursors (chemical impurities, fracture surfaces, and silica-based redeposit) known to lead to laser damage initiation. The redeposit precursor was reduced (and hence the damage threshold was increased) by: (1) increasing the SiF{sub 6}{sup 2-} solubility through reduction in the NH4F concentration and impurity cation impurities, and (2) improving the mass transport of reaction product (SiF{sub 6}{sup 2-}) (using high frequency ultrasonic agitation and excessive spray rinsing) away from the etched surface. A 2D finite element crack-etching and rinsing mass transport model (incorporating diffusion and advection) was used to predict reaction product concentration. The predictions are …
Date:
February 23, 2010
Creator:
Suratwala, T I; Miller, P E; Bude, J D; Steele, R A; Shen, N; Monticelli, M V et al.
Object Type:
Article
System:
The UNT Digital Library
Higher Education: Information on Incentive Compensation Violations Substantiated by the U.S. Department of Education
Correspondence issued by the Government Accountability Office with an abstract that begins "In 1992, Congress banned schools participating in federal student aid programs from paying commissions, bonuses, or other incentive payments to individuals based on their success in enrolling students or securing financial aid for them. Congress instituted this incentive compensation ban to eliminate abusive recruiting practices in which schools enrolled unqualified students who then received federal student aid funds. In 2002, the U.S. Department of Education (Education) issued regulations--commonly referred to as "safe harbors"--that allowed for 12 activities or payment arrangements that schools could use without violating the ban against incentive compensation. As of January 2010, Education was reviewing these safe harbor regulations as part of a negotiated rule making process to maintain or improve federal student aid programs. The Higher Education Opportunity Act (HEOA) mandated that GAO conduct a study on Education's enforcement of the incentive compensation ban in light of the safe harbors and report on the number of violations substantiated by the Secretary of Education since 1998, the nature of these violations, and the names of the institutions involved. As agreed with Congressional offices, this report provides information on violations of the incentive compensation ban substantiated …
Date:
February 23, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
Industrial Competitiveness and Technological Advancement: Debate Over Government Policy
This report discusses congressional interest in the pace of U.S. technological advancement due to its influence on U.S. economic growth, productivity, and international competitiveness. The proper role of the federal government in technology development and the competitiveness of U.S. industry continues to be a topic of congressional debate.
Date:
February 23, 2010
Creator:
Schacht, Wendy H.
Object Type:
Report
System:
The UNT Digital Library
Low-Intensity Nonlinear Spectral Effects in Compton Scattering
Nonlinear effects are known to occur in Compton scattering light sources, when the laser normalized 4-potential, A = e{radical}-A{sub {mu}}A{sup {mu}}/m{sub 0}c approaches unity. In this letter, it is shown that nonlinear spectral features can appear at arbitrarily low values of A, if the fractional bandwidth of the laser pulse, {Delta}{phi}{sup -1}, is sufficiently small to satisfy A{sup 2} {Delta}{phi} {approx_equal} 1. A three dimensional analysis, based on a local plane-wave, slow-varying envelope approximation, enables the study of these effects for realistic interactions between an electron beam and a laser pulse, and their influence on high-precision Compton scattering light sources.
Date:
February 23, 2010
Creator:
Hartemann, F V; Albert, F; Siders, C W & Barty, C P
Object Type:
Article
System:
The UNT Digital Library
NanoSIMS analysis of Bacillus spores for forensics
The threat associated with the potential use of radiological, nuclear, chemical and biological materials in terrorist acts has resulted in new fields of forensic science requiring the application of state-of-the-science analytical techniques. Since the anthrax letter attacks in the United States in the fall of 2001, there has been increased interest in physical and chemical characterization of bacterial spores. While molecular methods are powerful tools for identifying genetic differences, other methods may be able to differentiate genetically identical samples based on physical and chemical properties, as well as provide complimentary information, such as methods of production and approximate date of production. Microanalysis has the potential to contribute significantly to microbial forensics. Bacillus spores are highly structured, consisting of a core, cortex, coat, and in some species, an exosporium. This structure provides a template for constraining elemental abundance differences at the nanometer scale. The primary controls on the distribution of major elements in spores are likely structural and physiological. For example, P and Ca are known to be abundant in the spore core because that is where P-rich nucleic acids and Cadipicolinic acid are located, respectively. Trace elements are known to bind to the spore coat but the controls on these …
Date:
February 23, 2010
Creator:
Weber, P K; Davisson, M L & Velsko, S P
Object Type:
Article
System:
The UNT Digital Library
North Texas Daily (Denton, Tex.), Vol. 95, No. 21, Ed. 1 Tuesday, February 23, 2010
Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date:
February 23, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Observation of off-Hugoniot shocked states with ultrafast time resolution
We apply ultrafast single shot interferometry to determine the pressure and density of argon shocked from up to 7.8 GPa static initial pressure in a diamond anvil cell. This method enables the observation of thermodynamic states distinct from those observed in either single shock or isothermal compression experiments, and the observation of ultrafast dynamics in shocked materials. We also present a straightforward method for interpreting ultrafast shock wave data which determines the index of refraction at the shock front, and the particle and shock velocities for shock waves in transparent materials. Based on these methods, we observe shocked thermodynamic states between the room temperature isotherm of argon and the shock adiabat of cryogenic argon at final shock pressures up to 28 GPa.
Date:
February 23, 2010
Creator:
Armstrong, M; Crowhurst, J; Bastea, S & Zaug, J
Object Type:
Article
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 95, No. 104, Ed. 1 Tuesday, February 23, 2010
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 23, 2010
Creator:
Hughes, Jamie
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with Herman L. Bell, February 23, 2010
The National Museum of the Pacific War presents an oral interview with Herman L. Bell. Bell worked in a shipyard in California at the beginning of the war and describes his duties as a welder. He joined the Navy in April 1943 and discusses his time in boot camp at Farragut, Idaho and the additional training that he received as a firefighter. Bell was sent to the USS Independence (CVL-22). He describes his duties and some of the work he performed. Bell discusses when his ship was hit with a torpedo off Tarawa and the damage control work he performed including how he helped save a trapped sailor. He also discusses an incident when emergency repairs were performed during a typhoon and another when a large bomb broke free from its restraints. Bell also discusses seeing the massive flyover during the surrender ceremony in Tokyo Bay. He left the service in November 1945.
Date:
February 23, 2010
Creator:
Bell, Herman L.
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Herman L. Bell, February 23, 2010
The National Museum of the Pacific War presents an oral interview with Herman L. Bell. Bell worked in a shipyard in California at the beginning of the war and describes his duties as a welder. He joined the Navy in April 1943 and discusses his time in boot camp at Farragut, Idaho and the additional training that he received as a firefighter. Bell was sent to the USS Independence (CVL-22). He describes his duties and some of the work he performed. Bell discusses when his ship was hit with a torpedo off Tarawa and the damage control work he performed including how he helped save a trapped sailor. He also discusses an incident when emergency repairs were performed during a typhoon and another when a large bomb broke free from its restraints. Bell also discusses seeing the massive flyover during the surrender ceremony in Tokyo Bay. He left the service in November 1945.
Date:
February 23, 2010
Creator:
Bell, Herman L.
Object Type:
Text
System:
The Portal to Texas History
Pakistan's Nuclear Weapons: Proliferation and Security Issues
This report discusses Pakistan's efforts to produce fissile material and other issues related to nuclear proliferation and improving its nuclear arsenal. It also discusses the steps Pakistan has taken to increase international confidence in its nuclear security. However, continued instability in Pakistan has caused some to question the effectiveness of its nuclear security reforms. The report addresses these issues as well, in addition to the U.S.-Pakistan relationship as it regards nuclear policy.
Date:
February 23, 2010
Creator:
Kerr, Paul K. & Nikitin, Mary Beth
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 118, No. 37, Ed. 1 Tuesday, February 23, 2010
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 23, 2010
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Photograph of the "Rock Church" and Saint Olaf's Cemetery]
Photograph of the "Rock Church" of Cransfills Gap, Texas. The white stone building has a wooden roof and steeple. Snow covers the roof and much of the surrounding area. A cemetery gate to the right has "Saint Olaf Cemetery" written in ironwork.
Date:
February 23, 2010
Creator:
unknown
Object Type:
Photograph
System:
The Portal to Texas History
Plasmon resonant cavities in vertical nanowire arrays
We investigate tunable plasmon resonant cavity arrays in paired parallel nanowire waveguides. Resonances are observed when the waveguide length is an odd multiple of quarter plasmon wavelengths, consistent with boundary conditions of node and antinode at the ends. Two nanowire waveguides satisfy the dispersion relation of a planar metal-dielectric-metal waveguide of equivalent width equal to the square field average weighted gap. Confinement factors over 103 are possible due to plasmon focusing in the inter-wire space.
Date:
February 23, 2010
Creator:
Bora, Mihail; Fasenfest, Benjamin J.; Behymer, Elaine M.; Chang, Allan S-P & Bond, Tiziana C.
Object Type:
Article
System:
The UNT Digital Library
Postsecondary Education: College and University Endowments Have Shown Long-Term Growth, While Size, Restrictions, and Distributions Vary
A letter report issued by the Government Accountability Office with an abstract that begins "The nation's 4-year not-for-profit colleges and universities collectively held more than $400 billion in endowments in 2008. Some institutions' large endowments coupled with the high and growing cost of college have led to questions about institutions' use of endowments. This mandated report describes (1) the size and change in value of endowments over the last 20 years, (2) the extent and manner to which endowment funds are restricted for financial aid and other purposes, and (3) institutions' distribution of endowment assets. GAO obtained and analyzed data on college and university endowments from the Department of Education and other sources. Because industry-wide data were not available on endowment restrictions and distributions, GAO selected 10 colleges and universities for case studies. The case-study institutions were selected to include a mix of public, private, large, small, and minority-serving institutions. Information from these schools cannot be generalized to all U.S. colleges and universities."
Date:
February 23, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Rains County Leader (Emory, Tex.), Vol. 123, No. 36, Ed. 1 Tuesday, February 23, 2010
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
February 23, 2010
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
The Role of the Hospice Medical Director as Observed in Interdisciplinary Team Case Reviews
Article on the role of the hospice medical director as observed in interdisciplinary team case reviews.
Date:
February 23, 2010
Creator:
Oliver, Debra Parker; Wittenberg-Lyles, Elaine; Demiris, George; Tatum, Paul E.; Regehr, Kelly A. & Burt, Stephanie
Object Type:
Article
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 95, No. 113, Ed. 1 Tuesday, February 23, 2010
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 23, 2010
Creator:
Shance, Brenda
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 112, No. 085, Ed. 1 Tuesday, February 23, 2010
Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date:
February 23, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Swisher County News (Tulia, Tex.), Vol. 2, No. 6, Ed. 1 Tuesday, February 23, 2010
Weekly newspaper from Tulia, Texas that includes local, state, and national news along with extensive advertising.
Date:
February 23, 2010
Creator:
Hooten, Patsy
Object Type:
Newspaper
System:
The Portal to Texas History
Temporary Assistance for Needy Families: Fewer Eligible Families Have Received Cash Assistance Since the 1990s, and the Recession's Impact on Caseloads Varies by State
A letter report issued by the Government Accountability Office with an abstract that begins "Following sweeping changes made to federal welfare policy in 1996 with the creation of the Temporary Assistance for Needy Families (TANF) program, the number of needy families who received cash assistance fell by more than half to 1.7 million in 2008. Poverty among children also fell from about 21 percent in 1995 to about 16 percent in 2000, rising again to 19 percent in 2008. The current recession deepened in 2008, raising questions about state TANF programs' response to increased needs. GAO was asked to provide Congress with information on the (1) factors contributing to the decline in the number of families receiving assistance; (2) characteristics of participating and nonparticipating eligible families; (3) impact of higher participation in TANF cash assistance on child poverty; and (4) changes states are experiencing in caseloads and spending in the current recession. GAO's methodologies included using microsimulation analyses; reviewing relevant research and federal laws; interviewing TANF officials in 21 selected states; analyzing state cash assistance data; and interviewing researchers, federal officials, and other experts."
Date:
February 23, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
The University News (Irving, Tex.), Vol. 35, No. 17, Ed. 1 Tuesday, February 23, 2010
Weekly student newspaper from the University of Dallas in Irving, Texas that includes campus news and commentaries along with advertising.
Date:
February 23, 2010
Creator:
Nelson, Heather
Object Type:
Newspaper
System:
The Portal to Texas History