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Year
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Legislative Branch: FY2009 Appropriations
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mechanisms of Low Dose Radiation-induced T helper Cell Function
Exposure to radiation above levels normally encountered on Earth can occur during wartime, accidents such as those at Three Mile Island and Chernobyl, and detonation of “dirty bombs” by terrorists. Relatively high levels of radiation exposure can also occur in certain occupations (low-level waste sites, nuclear power plants, nuclear medicine facilities, airline industry, and space agencies). Depression or dysfunction of the highly radiosensitive cells of the immune system can lead to serious consequences, including increased risk for infections, cancer, hypersensitivity reactions, poor wound healing, and other pathologies. The focus of this research was on the T helper (Th) subset of lymphocytes that secrete cytokines (proteins), and thus control many actions and interactions of other cell types that make up what is collectively known as the immune system. The Department of Energy (DOE) Low Dose Radiation Program is concerned with mechanisms altered by exposure to high energy photons (x- and gamma-rays), protons and electrons. This study compared, for the first time, the low-dose effects of two of these radiation forms, photons and protons, on the response of Th cells, as well as other cell types with which they communicate. The research provided insights regarding gene expression patterns and capacity to secrete …
Date:
October 31, 2008
Creator:
Gridley, Daila S.
Object Type:
Report
System:
The UNT Digital Library
Military Construction, Veterans Affairs, and Related Agencies: FY2009 Appropriations
This report is a guide to one of the regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House and Senate Military Construction, Veterans Affairs, and Related Agencies Subcommittees. It summarizes the status of the bill, its scope, major issues, funding levels, and related congressional activity, and is updated as events warrant
Date:
October 31, 2008
Creator:
Else, Daniel H.; Scott, Christine & Panangala, Sidath Viranga
Object Type:
Report
System:
The UNT Digital Library
Military Medical Care: Questions and Answers
This report answers several frequently-asked questions about military health care, particularly related to TRICARE and its various aspects.
Date:
October 31, 2008
Creator:
Jansen, Don J.
Object Type:
Report
System:
The UNT Digital Library
Monte Carlo Simulations of High-speed, Time-gated MCP-based X-ray Detectors: Saturation Effects in DC and Pulsed Modes and Detector Dynamic Range
We present here results of continued efforts to understand the performance of microchannel plate (MCP)–based, high-speed, gated, x-ray detectors. This work involves the continued improvement of a Monte Carlo simulation code to describe MCP performance coupled with experimental efforts to better characterize such detectors. Our goal is a quantitative description of MCP saturation behavior in both static and pulsed modes. We have developed a new model of charge buildup on the walls of the MCP channels and measured its effect on MCP gain. The results are compared to experimental data obtained with a short-pulse, high-intensity ultraviolet laser; these results clearly demonstrate MCP saturation behavior in both DC and pulsed modes. The simulations compare favorably to the experimental results. The dynamic range of the detectors in pulsed operation is of particular interest when fielding an MCP–based camera. By adjusting the laser flux we study the linear range of the camera. These results, too, are compared to our simulations.
Date:
October 31, 2008
Creator:
Craig Kruschwitz, Ming Wu, Ken Moy, Greg Rochau
Object Type:
Article
System:
The UNT Digital Library
Murphy Middle School October 31, 2008
Website pages containing photographs from an event at Murphy Middle School on October 31, 2008, held by the McKinney chapter.
Date:
October 31, 2008
Creator:
Texas Society Sons of the American Revolution, McKinney Chapter 63
Object Type:
Website
System:
The UNT Digital Library
The National Oceanic and Atmospheric Administration (NOAA): Budget for FY2009
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
NSLS-II Control of Dynamic Aperture
We have outlined how, by an intuitive approach, the on- and off-momentum dynamic aperture for a synchrotron light source can be estimated from a nonlinear system of algebraic equations for the sextupole/multipole strengths. The approach has only two free parameters: the relative weight for resonance vs. tune shift terms and the tune footprint for stable trajectories in a modern third generation synchrotron light source. In other words, we have established a control theory approach for the medium term (10{sup 3} turns) stability for a dynamic system described by a nonlinear system of ordinary differential equations. Equipped with a predictive, quantitative model for stability, we have then evaluated how to improve the control of the dynamics by analyzing and modifying the properties of the corresponding algebraic system. In particular, by changing the number- and characteristics of the parameters, i.e., we have not evaluated how the underlying (linear) optics could be improved. We have also validated our conjectures by numerical simulations with a realistic model. Presumably, our conclusions, summarized in Section 1.0, are a direct result of the presented analysis and observations.
Date:
October 31, 2008
Creator:
Bengtsson,J.
Object Type:
Report
System:
The UNT Digital Library
Observation and Polarization of B->phiK1+ and phiK*2+
With the full BABAR data sample of 465 million B{bar B} pairs, they observe the decays B{sup {+-}} {yields} {psi}K{sub 1}(1270){sup {+-}} and B{sup {+-}} {yields} {psi}K*{sub 2}(1430){sup {+-}}. They measure the branching fractions (6.1 {+-} 1.6 {+-} 1.1) x 10{sup -6} and (8.4 {+-} 1.9 {+-} 0.9) x 10{sup -6} and the fractions of longitudinal polarization 0.46{sub -0.13-0.07}{sup +0.12+0.03} and 0.80{sub -0.10}{sup +0.09} {+-} 0.03, respectively. They also report on the B{sup {+-}} {yields} {psi}K*{sub 0}(1430){sup {+-}} decay branching fraction of (7.0 {+-} 1.3 {+-} 0.9) x 10{sup -6} and several parameters sensitive to CP violation and interference in the above three decays. Upper limits are placed on the B{sup {+-}} decay rates to final states with {psi} and K{sub 1}(1400){sup {+-}}, K*(1410){sup {+-}}, K{sub 2}(1770){sup {+-}}, or K{sub 2}(1820){sup {+-}}. Understanding the observed polarization pattern requires amplitude contributions from an uncertain source.
Date:
October 31, 2008
Creator:
Aubert, B.; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E. et al.
Object Type:
Article
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 93, No. 51, Ed. 1 Friday, October 31, 2008
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 31, 2008
Creator:
Simons, Meredith
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Eagle (Tulsa, Okla.), Vol. 88, No. 44, Ed. 1 Friday, October 31, 2008
Weekly newspaper from Tulsa, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2008
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Omnibus Public Land Management Act of 2008: Senate Amendment 5662 as Submitted on September 26, 2008
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Origin of the Monochromatic Photoemission Peak in Diamondoid Monolayers
Recent photoemission experiments have discovered a highly monochromatized secondary electron peak emitted from diamondoid self-assembled monolayers on metal substrates. New experimental data and simulation results are presented to show that a combination of negative electron affinity and strong electron-phonon scattering is responsible for this behavior. The simulation results are generated using a simple Monte Carlo transport algorithm. The simulated spectra contain the main spectral features of the measured ones.
Date:
October 31, 2008
Creator:
Clay, William A.; Liu, Zhi; Yang, Wanli; Fabbri, Jason D.; Dahl, Jeremy E.; Carlson, Robert M.K. et al.
Object Type:
Article
System:
The UNT Digital Library
Pacific Salmon and Steelhead Trout: Managing Under the Endangered Species Act
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Perry Daily Journal (Perry, Okla.), Vol. 116, No. 216, Ed. 1 Friday, October 31, 2008
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2008
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Production of Hydrogen for Clean and Renewable Source of Energy for Fuel Cell Vehicles
This was a two-year project that had two major components: 1) the demonstration of a PV-electrolysis system that has separate PV system and electrolysis unit and the hydrogen generated is to be used to power a fuel cell based vehicle; 2) the development of technologies for generation of hydrogen through photoelectrochemical process and bio-mass derived resources. Development under this project could lead to the achievement of DOE technical target related to PEC hydrogen production at low cost. The PEC part of the project is focused on the development of photoelectrochemical hydrogen generation devices and systems using thin-film silicon based solar cells. Two approaches are taken for the development of efficient and durable photoelectrochemical cells; 1) An immersion-type photoelectrochemical cells (Task 3) where the photoelectrode is immersed in electrolyte, and 2) A substrate-type photoelectrochemical cell (Task 2) where the photoelectrode is not in direct contact with electrolyte. Four tasks are being carried out: Task 1: Design and analysis of DC voltage regulation system for direct PV-to-electrolyzer power feed Task 2: Development of advanced materials for substrate-type PEC cells Task 3: Development of advanced materials for immersion-type PEC cells Task 4: Hydrogen production through conversion of biomass-derived wastes
Date:
October 31, 2008
Creator:
Deng, Xunming; Ingler, William B, Jr.; Abraham, Martin; Castellano, Felix; Coleman, Maria; Collins, Robert et al.
Object Type:
Report
System:
The UNT Digital Library
The Ranger (San Antonio, Tex.), Vol. 83, No. 8, Ed. 1 Friday, October 31, 2008
Weekly student newspaper from San Antonio College in San Antonio, Texas that includes campus news along with advertising.
Date:
October 31, 2008
Creator:
San Antonio College
Object Type:
Newspaper
System:
The Portal to Texas History
Reliable and Repeatable Characterization of Optical Streak Cameras
Optical streak cameras are used as primary diagnostics for a wide range of physics and laser experiments at facilities such as the National Ignition Facility (NIF). To meet the strict accuracy requirements needed for these experiments, the systematic nonlinearities of the streak cameras (attributed to nonlinearities in the optical and electrical components that make up the streak camera system) must be characterized. In some cases the characterization information is used as a guide to help determine how experiment data should be taken. In other cases, the characterization data are applied to the raw data images to correct for the nonlinearities. In order to characterize an optical streak camera, a specific set of data is collected, where the response to defined inputs are recorded. A set of analysis software routines has been developed to extract information such as spatial resolution, dynamic range, and temporal resolution from this data set. The routines are highly automated, requiring very little user input and thus provide very reliable and repeatable results that are not subject to interpretation. An emphasis on quality control has been placed on these routines due to the high importance of the camera characterization information.
Date:
October 31, 2008
Creator:
Michael Charest Jr., Peter Torres III, Christopher Silbernagel, and Daniel Kalantar
Object Type:
Article
System:
The UNT Digital Library
The Rice Thresher, Vol. 96, No. 10, Ed. 1 Friday, October 31, 2008
A weekly student newspaper from the Rice University in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 31, 2008
Creator:
Chun, Lily & Farmer, Dylan
Object Type:
Newspaper
System:
The Portal to Texas History
The Role of Liquid Waste Pretreatment Technologies in Solving the Doe Clean-Up Mission
The objective of this report is to describe the pretreatment solutions that allow treatment to be tailored to specific wastes, processing ahead of the completion schedules for the main treatment facilities, and reduction of technical risks associated with future processing schedules. Wastes stored at Hanford and Savannah River offer challenging scientific and engineering tasks. At both sites, space limitations confound the ability to effectively retrieve and treat the wastes. Additionally, the radiation dose to the worker operating and maintaining the radiochemical plants has a large role in establishing the desired radioactivity removal. However, the regulatory requirements to treat supernatant and saltcake tank wastes differ at the two sites. Hanford must treat and remove radioactivity from the tanks based on the TriParty Agreement and Waste Incidental to Reprocessing (WIR) documentation. These authorizing documents do not specify treatment technologies; rather, they specify endstate conditions. Dissimilarly, Waste Determinations prepared at SRS in accordance with Section 3116 of the 2005 National Defense Authorization Act along with state operating permits establish the methodology and amounts of radioactivity that must be removed and may be disposed of in South Carolina. After removal of entrained solids and site-specific radionuclides, supernatant and saltcake wastes are considered to be …
Date:
October 31, 2008
Creator:
Wilmarth, B. & Sheryl Bush, S.
Object Type:
Report
System:
The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 94, No. 42, Ed. 1 Friday, October 31, 2008
Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 31, 2008
Creator:
Shance, Brenda
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Securitization and Federal Regulation of Mortgages for Safety and Soundness
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Senior Recital: 2008-10-31 - Houston Bogus III, trombone
Access:
Use of this item is restricted to the UNT Community
Recital presented at the UNT College of Music Concert Hall in partial fulfillment of the Bachelor of Music degree.
Date:
October 31, 2008
Creator:
Bogus, Houston, III
Object Type:
Sound
System:
The UNT Digital Library
Sex Discrimination and the United States Supreme Court: Developments in the Law
None
Date:
October 31, 2008
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library