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Perry Daily Journal (Perry, Okla.), Vol. 115, No. 152, Ed. 1 Tuesday, August 7, 2007 (open access)

Perry Daily Journal (Perry, Okla.), Vol. 115, No. 152, Ed. 1 Tuesday, August 7, 2007

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, August 7, 2007 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, August 7, 2007

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Bush, Kent
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 58, Ed. 1 Tuesday, August 7, 2007 (open access)

The Altus Times (Altus, Okla.), Vol. 109, No. 58, Ed. 1 Tuesday, August 7, 2007

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
Boerne Star & Recorder (Boerne, Tex.), Vol. 101, No. 63, Ed. 1 Tuesday, August 7, 2007 (open access)

Boerne Star & Recorder (Boerne, Tex.), Vol. 101, No. 63, Ed. 1 Tuesday, August 7, 2007

Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Cartwright, Brian
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 253, Ed. 1 Tuesday, August 7, 2007 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 86, No. 253, Ed. 1 Tuesday, August 7, 2007

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Clements, Clifford E.
Object Type: Newspaper
System: The Portal to Texas History
Family Caregiving to the Older Population: Background, Federal Programs, and Issues for Congress (open access)

Family Caregiving to the Older Population: Background, Federal Programs, and Issues for Congress

This report provides an overview of the background, federal programs, and issues for Congress on family caregiving to the older population.
Date: August 7, 2007
Creator: Colello, Kirsten J.
Object Type: Report
System: The UNT Digital Library
REMOTE ANALYSIS OF HIGH-TRITIUM-CONTENT WATER (open access)

REMOTE ANALYSIS OF HIGH-TRITIUM-CONTENT WATER

Systems to safely analyze for tritium in moisture collected from glovebox atmospheres are being developed for use at Savannah River Site (SRS) tritium facilities. Analysis results will guide whether the material contains sufficient tritium for economical recovery, or whether it should be stabilized for disposal as waste. In order to minimize potential radiation exposures that could occur in handling and diluting high-tritium-content water, SRS sought alternatives to the process laboratory's routine analysis by liquid-scintillation counting. The newer systems determine tritium concentrations by measuring bremsstrahlung radiation induced by low-energy beta interactions. One of the systems determines tritium activity in liquid streams, the other determines tritium activity in water vapor. Topics discussed include counting results obtained by modeling and laboratory testing and corrections that are made for low-energy photon attenuation.
Date: August 7, 2007
Creator: Diprete, D; Raymond Sigg, R; Leah Arrigo, L & Donald Pak, D
Object Type: Article
System: The UNT Digital Library
Impact of Carbon Structure and Morphology on the ElectrochemicalPerformance of LiFePO4/C Composites (open access)

Impact of Carbon Structure and Morphology on the ElectrochemicalPerformance of LiFePO4/C Composites

The electrochemical performance of LiFePO{sub 4}/C composites in lithium cells is closely correlated to pressed pellet conductivities measured by AC impedance methods. These composite conductivities are a strong function not only of the amount of carbon, but of its structure and distribution. Ideally, the amount of carbon in composites should be minimal (less than about 2 wt. %) so as not to decrease the energy density unduly. This is particularly important for plug-in hybrid electric vehicle applications (PHEVs) where both high power and moderate energy density are required. Optimization of the carbon structure, particularly the sp{sup 2}/sp{sup 3} and D/G (disordered/graphene) ratios, improves the electronic conductivity while minimizing the carbon amount. Manipulation of the carbon structure can be achieved via the use of synthetic additives including iron-containing graphitization catalysts. Additionally, combustion synthesis techniques allow co-synthesis of LiFePO{sub 4} and carbon fibers or nanotubes, which can act as 'nanowires' for the conduction of current during cell operation.
Date: August 7, 2007
Creator: Doeff, Marca M.; Wilcox, James D.; Yu, Rong; Aumentado, Albert; Marcinek, Marek & Kostecki, Robert
Object Type: Article
System: The UNT Digital Library
Communications Act Revisions: Selected Issues for Consideration (open access)

Communications Act Revisions: Selected Issues for Consideration

This report provides an overview of selected topics which the 110th Congress has begun, or is likely, to address in its examination of telecommunications issues. This report addresses major issues, rather than addressing specific legislative activity.
Date: August 7, 2007
Creator: Gilroy, Angele A.
Object Type: Report
System: The UNT Digital Library
LANGEVIN DYNAMICS OF THE TWO STAGE MELTING TRANSITION OF VORTEX MATTER IN Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} IN THE PRESENCE OF STRAIGHT AND OF TILTED COLUMNAR DEFECTS (open access)

LANGEVIN DYNAMICS OF THE TWO STAGE MELTING TRANSITION OF VORTEX MATTER IN Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} IN THE PRESENCE OF STRAIGHT AND OF TILTED COLUMNAR DEFECTS

In this paper we use London Langevin molecular dynamics simulations to investigate the vortex matter melting transition in the highly anisotropic high-temperature superconductor material Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}#14; in the presence of low concentration of columnar defects (CDs). We reproduce with further details our previous results obtained by using Multilevel Monte Carlo simulations that showed that the melting of the nanocrystalline vortex matter occurs in two stages: a first stage melting into nanoliquid vortex matter and a second stage delocalization transition into a homogeneous liquid. Furthermore, we report on new dynamical measurements in the presence of a current that identifies clearly the irreversibility line and the second stage delocalization transition. In addition to CDs aligned along the c-axis we also simulate the case of tilted CDs which are aligned at an angle with respect to the applied magnetic field. Results for CDs tilted by 45{degree} with respect to c-axis show that the locations of the melting and delocalization transitions are not affected by the tilt when the ratio of flux lines to CDs remains constant. On the other hand we argue that some dynamical properties and in particular the position of the irreversibility line should be affected.
Date: August 7, 2007
Creator: Goldschmidt, Yadin Y. & Liu, Jin-Tao
Object Type: Text
System: The UNT Digital Library
Dispute Settlement in the World Trade Organization: An Overview (open access)

Dispute Settlement in the World Trade Organization: An Overview

None
Date: August 7, 2007
Creator: Grimmett, Jeanne J.
Object Type: Report
System: The UNT Digital Library
X-ray spectroscopic study of the charge state and local orderingof room-temperature ferromagnetic Mn oped ZnO (open access)

X-ray spectroscopic study of the charge state and local orderingof room-temperature ferromagnetic Mn oped ZnO

The charge state and local ordering of Mn doped into a pulsed laser deposited single-phase thin film of ZnO are investigated by using X-ray absorption spectroscopy at the O K-, Mn K- and L-edges, and X-ray emission spectroscopy at the O K- and Mn L-edge. This film is found to be ferromagnetic at room temperature. EXAFS measurement shows that Mn{sup 2+} replaces Zn site in tetrahedral symmetry, and there is no evidence for either metallic Mn or MnO in the film. Upon Mn doping, the top of O 2p valence band extends into the bandgap indicating additional charge carries being created.
Date: August 7, 2007
Creator: Guo, J.-H.; Gupta, Amita; Sharma, Parmanand; Rao, K.V.; Marcus,M.A.; Dong, C.L. et al.
Object Type: Article
System: The UNT Digital Library
NEST-GENERATION TCAP HYDROGEN ISOTOPE SEPARATION PROCESS (open access)

NEST-GENERATION TCAP HYDROGEN ISOTOPE SEPARATION PROCESS

A thermal cycling absorption process (TCAP) for hydrogen isotope separation has been in operation at Savannah River Site since 1994. The process uses a hot/cold nitrogen system to cycle the temperature of the separation column. The hot/cold nitrogen system requires the use of large compressors, heat exchanges, valves and piping that is bulky and maintenance intensive. A new compact thermal cycling (CTC) design has recently been developed. This new design uses liquid nitrogen tubes and electric heaters to heat and cool the column directly so that the bulky hot/cold nitrogen system can be eliminated. This CTC design is simple and is easy to implement, and will be the next generation TCAP system at SRS. A twelve-meter column has been fabricated and installed in the laboratory to demonstrate its performance. The design of the system and its test results to date is discussed.
Date: August 7, 2007
Creator: Heung, L; Henry Sessions, H; Anita Poore, A; William Jacobs, W & Christopher Williams, C
Object Type: Article
System: The UNT Digital Library
Rains County Leader (Emory, Tex.), Vol. 120, No. 9, Ed. 1 Tuesday, August 7, 2007 (open access)

Rains County Leader (Emory, Tex.), Vol. 120, No. 9, Ed. 1 Tuesday, August 7, 2007

Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Hill, Earl Clyde, Jr.
Object Type: Newspaper
System: The Portal to Texas History
Exon-Florio Foreign Investment Provision: Comparison of H.R. 556 and S. 1610 (open access)

Exon-Florio Foreign Investment Provision: Comparison of H.R. 556 and S. 1610

None
Date: August 7, 2007
Creator: Jackson, James K.
Object Type: Report
System: The UNT Digital Library
15 KJ FLASH LAMP, POWER CONDITIONING UNIT DESIGNED FOR SAFTY, RELIABILITY & MANUFACTURABILITY* (open access)

15 KJ FLASH LAMP, POWER CONDITIONING UNIT DESIGNED FOR SAFTY, RELIABILITY & MANUFACTURABILITY*

A 15kJoule, Flash Lamp Power Conditioning Unit has been successfully designed, developed, and deployed in the National Ignition Facility (NIF) Preamplifier Modules (PAM). The primary design philosophy of this power conditioning unit (PCU) is safety, reliability, and manufacturability. Cost reduction over commercially equivalent systems was also achieved through an easily manufactured packaging design optimized to meet NIF requirements. While still maintaining low cost, the PCU design includes a robust control system, fault diagnostic system, and safety features. The pulsed power design includes 6 PFN modules, each including a dual series injection trigger transformer, that drive a total of 12 flash lamp loads. The lamps are individually triggered via a 20kV pulse produced by a 1kV, MCT switched capacitive discharge unit on the primary side of the trigger transformer. The remote control interface includes an embedded controller that captures flash lamp current wave forms and fault status for each shot. The embedded controller provides the flexibility of remotely adjusting both the main drive voltage from 1.6 to 2.5 kV and the trigger voltage from 0 to 20 kV.
Date: August 7, 2007
Creator: James, G.; Merritt, B.; Dreifuerst, G.; Strickland, S. & Tse, E.
Object Type: Article
System: The UNT Digital Library
Digital Television: An Overview (open access)

Digital Television: An Overview

This report details the information related to Digital Television service, policy issues, and activities in the 108th, activities, and issues in 109th Congress, and, issues in the 110th congress
Date: August 7, 2007
Creator: Kruger, Lennard G.
Object Type: Report
System: The UNT Digital Library
Energy Tax Policy: History and Current Issues (open access)

Energy Tax Policy: History and Current Issues

This report provides historical context regarding energy tax policy and discusses what may lie ahead.
Date: August 7, 2007
Creator: Lazzari, Salvatore
Object Type: Report
System: The UNT Digital Library
Temporal Representation in Semantic Graphs (open access)

Temporal Representation in Semantic Graphs

A wide range of knowledge discovery and analysis applications, ranging from business to biological, make use of semantic graphs when modeling relationships and concepts. Most of the semantic graphs used in these applications are assumed to be static pieces of information, meaning temporal evolution of concepts and relationships are not taken into account. Guided by the need for more advanced semantic graph queries involving temporal concepts, this paper surveys the existing work involving temporal representations in semantic graphs.
Date: August 7, 2007
Creator: Levandoski, J J & Abdulla, G M
Object Type: Report
System: The UNT Digital Library
Piney Woods Playground: ...where fast-paced is out of place and old-fashioned is in fashion (open access)

Piney Woods Playground: ...where fast-paced is out of place and old-fashioned is in fashion

Text for an article about the Piney Woods region of East Texas that was published in the September 2007 issue of Texas Highways magazine.
Date: August 7, 2007
Creator: Mallory, Randy
Object Type: Text
System: The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 231, Ed. 1 Tuesday, August 7, 2007 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 92, No. 231, Ed. 1 Tuesday, August 7, 2007

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: August 7, 2007
Creator: Mattox, Jami
Object Type: Newspaper
System: The Gateway to Oklahoma History
Ozone Air Quality Standards: EPA's 2007 Proposed Changes (open access)

Ozone Air Quality Standards: EPA's 2007 Proposed Changes

This report provides background on the National Ambient Air Quality Standard (NAAQS), the process used to establish them, the existing ozone standard, and EPA's proposal, as well as information regarding the potential effects of any revision to the standard.
Date: August 7, 2007
Creator: McCarthy, James E.
Object Type: Report
System: The UNT Digital Library
Proton hexality from an anomalous flavor U(1) and neutrino masses--Linking to the string scale (open access)

Proton hexality from an anomalous flavor U(1) and neutrino masses--Linking to the string scale

We devise minimalistic gauged U(1)_X Froggatt-Nielsen models which at low-energy give rise to the recently suggested discrete gauge Z_6 symmetry, proton hexality, thus stabilizing the proton. Assuming three generations of right-handed neutrinos, with the proper choice of X-charges, we obtain viable neutrino masses. Furthermore, we find scenarios such that no X-charged hidden sector superfields are needed, which from a bottom-up perspective allows the calculation of g_string, g_X and G_SM's Kac-Moody levels. The only mass scale apart from M_grav is m_soft.
Date: August 7, 2007
Creator: Murayama, Hitoshi; Dreiner, Herbi K.; Luhn, Christoph; Murayama, Hitoshi & Thormeiere, Marc
Object Type: Article
System: The UNT Digital Library
Strontium Isotopic Composition of Paleozoic Carbonate Rocks in the Nevada Test Site Vicinity, Clark, Lincoln, and Nye Counties, Nevada and Inyo County, California. (open access)

Strontium Isotopic Composition of Paleozoic Carbonate Rocks in the Nevada Test Site Vicinity, Clark, Lincoln, and Nye Counties, Nevada and Inyo County, California.

Ground water moving through permeable Paleozoic carbonate rocks represents the most likely pathway for migration of radioactive contaminants from nuclear weapons testing at the Nevada Test Site, Nye County, Nevada. The strontium isotopic composition (87Sr/86Sr) of ground water offers a useful means of testing hydrochemical models of regional flow involving advection and reaction. However, reaction models require knowledge of 87Sr/86Sr data for carbonate rock in the Nevada Test Site vicinity, which is scarce. To fill this data gap, samples of core or cuttings were selected from 22 boreholes at depth intervals from which water samples had been obtained previously around the Nevada Test Site at Yucca Flat, Frenchman Flat, Rainier Mesa, and Mercury Valley. Dilute acid leachates of these samples were analyzed for a suite of major- and trace-element concentrations (MgO, CaO, SiO2, Al2O3, MnO, Rb, Sr, Th, and U) as well as for 87Sr/86Sr. Also presented are unpublished analyses of 114 Paleozoic carbonate samples from outcrops, road cuts, or underground sites in the Funeral Mountains, Bare Mountain, Striped Hills, Specter Range, Spring Mountains, and ranges east of the Nevada Test Site measured in the early 1990's. These data originally were collected to evaluate the potential for economic mineral deposition …
Date: August 7, 2007
Creator: Paces, James B.; Peterman, Zell E.; Futa, Kiyoto; Oliver, Thomas A. & Marshall., and Brian D.
Object Type: Report
System: The UNT Digital Library