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532 Matching Results
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Archer County News (Archer City, Tex.), No. 40, Ed. 1 Thursday, October 2, 2008
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2008
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 23, Ed. 1 Thursday, October 2, 2008
Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2008
Creator:
Wilkerson, James C., III
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 26, No. 40, Ed. 1 Thursday, October 2, 2008
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2008
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 107, No. 79, Ed. 1 Wednesday, October 2, 2002
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2002
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 121, No. 79, Ed. 1 Thursday, October 2, 2003
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 2, 2003
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Spin-Orbit Effects in Spin-Resolved L2,3 Core Level Photoemission of 3d Ferromagnetic Thin Films
We present spin-resolved 2p core level photoemission for the 3d transition metal films of Fe and Co grown on Cu(100). We observe clear spin asymmetry in the main 2p core level photoemission peaks of Fe and Co films consistent with trends in the bulk magnetic moments. The spin polarization can be strongly enhanced, by variation of the experimental geometry, when the photoemission is undertaken with circularly polarized light, indicating that spin-orbit interaction can have a profound in spin polarized photoemission. Further spin polarized photoemission studies using variable circularly polarized light at high photon energies, high flux are indicated, underscoring the value of synchrotron measurements at facilities with increased beam stability.
Date:
October 2, 2007
Creator:
Komesu, T; Waddill, G D; Yu, S W; Butterfield, M & Tobin, J G
Object Type:
Article
System:
The UNT Digital Library
Radiation Effects in Nuclear Waste Materials
Radiation effects from the decay of radionuclides may impact the long-term performance and stability of nuclear waste forms and stabilized nuclear materials. In an effort to address these concerns, the objective of this project was the development of fundamental understanding of radiation effects in glasses and ceramics, particularly on solid-state radiation effects and their influence on aqueous dissolution kinetics. This study has employed experimental, theoretical and computer simulation methods to obtain new results and insights into radiation damage processes and to initiate the development of predictive models. Consequently, the research that has been performed under this project has significant implications for the High-Level Waste and Nuclear Materials focus areas within the current DOE/EM mission. In the High-Level Waste (HLW) focus area, the results of this research could lead to improvements in the understanding of radiation-induced degradation mechanisms and their effects on dissolution kinetics, as well as development of predictive models for waste form performance. In the Nuclear Materials focus area, the results of this research could lead to improvements in the understanding of radiation effects on the chemical and structural properties of materials for the stabilization and long-term storage of plutonium, highly-enriched uranium, and other actinides. Ultimately, this research could …
Date:
October 2, 2000
Creator:
Weber, William J.; Corrales, L. Rene; Ness, Nancy J.; Williford, Ralph E.; Heinisch, Howard L.; Thevuthasan, Suntharampillai et al.
Object Type:
Report
System:
The UNT Digital Library
A multi-channel gel electrophoresis and continuous fraction collection apparatus for high throughput protein separation and characterization
To facilitate a direct interface between protein separation by PAGE and protein identification by mass spectrometry, we developed a multichannel system that continuously collects fractions as protein bands migrate off the bottom of gel electrophoresis columns. The device was constructed using several short linear gel columns, each of a different percent acrylamide, to achieve a separation power similar to that of a long gradient gel. A Counter Free-Flow elution technique then allows continuous and simultaneous fraction collection from multiple channels at low cost. We demonstrate that rapid, high-resolution separation of a complex protein mixture can be achieved on this system using SDS-PAGE. In a 2.5 h electrophoresis run, for example, each sample was separated and eluted into 48-96 fractions over a mass range of 10-150 kDa; sample recovery rates were 50percent or higher; each channel was loaded with up to 0.3 mg of protein in 0.4 mL; and a purified band was eluted in two to three fractions (200 L/fraction). Similar results were obtained when running native gel electrophoresis, but protein aggregation limited the loading capacity to about 50 g per channel and reduced resolution.
Date:
October 2, 2009
Creator:
Choi, Megan; Nordmeyer, Robert A.; Cornell, Earl; Dong, Ming; Biggin, Mark D. & Jin, Jian
Object Type:
Article
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 81, No. 308, Ed. 1 Thursday, October 2, 2003
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2003
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 128, No. 40, Ed. 1 Thursday, October 2, 2008
Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2008
Creator:
Palmer, Roger
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 126, No. 81, Ed. 1 Thursday, October 2, 2008
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 2, 2008
Creator:
Reddell, Valerie
Object Type:
Newspaper
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 117, No. 40, Ed. 1 Thursday, October 2, 2003
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 2, 2003
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 123, No. 79, Ed. 1 Sunday, October 2, 2005
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
October 2, 2005
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Archer County News (Archer City, Tex.), No. 40, Ed. 1 Thursday, October 2, 2003
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
October 2, 2003
Creator:
Lewis, Shelley
Object Type:
Newspaper
System:
The Portal to Texas History
Seminole Sentinel (Seminole, Tex.), Vol. 96, No. 102, Ed. 1 Sunday, October 2, 2005
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 2, 2005
Creator:
Wright, Dustin
Object Type:
Newspaper
System:
The Portal to Texas History
Seminole Sentinel (Seminole, Tex.), Vol. 95, No. 101, Ed. 1 Wednesday, October 2, 2002
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
October 2, 2002
Creator:
Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
Positron emission mammography imaging
This paper examines current trends in Positron Emission Mammography (PEM) instrumentation and the performance tradeoffs inherent in them. The most common geometry is a pair of parallel planes of detector modules. They subtend a larger solid angle around the breast than conventional PET cameras, and so have both higher efficiency and lower cost. Extensions to this geometry include encircling the breast, measuring the depth of interaction (DOI), and dual-modality imaging (PEM and x-ray mammography, as well as PEM and x-ray guided biopsy). The ultimate utility of PEM may not be decided by instrument performance, but by biological and medical factors, such as the patient to patient variation in radiotracer uptake or the as yet undetermined role of PEM in breast cancer diagnosis and treatment.
Date:
October 2, 2003
Creator:
Moses, William W.
Object Type:
Article
System:
The UNT Digital Library
Evaluation of the Emission, Transport, and Deposition of Mercury, Fine Particulate Matter, and Arsenic From Coal-Based Power Plants in the Ohio River Valley Region Progress Report
Ohio University, in collaboration with CONSOL Energy, Advanced Technology Systems, Inc (ATS) and Atmospheric and Environmental Research, Inc. (AER) as subcontractors, is evaluating the impact of emissions from coal-fired power plants in the Ohio River Valley region as they relate to the transport and deposition of mercury, arsenic, and associated fine particulate matter. This evaluation will involve two interrelated areas of effort: ambient air monitoring and regional-scale modeling analysis. The scope of work for the ambient air monitoring will include the deployment of a surface air monitoring (SAM) station in southeastern Ohio. The SAM station will contain sampling equipment to collect and measure mercury (including speciated forms of mercury and wet and dry deposited mercury), arsenic, particulate matter (PM) mass, PM composition, and gaseous criteria pollutants (CO, NOx, SO{sub 2}, O{sub 3}, etc.). Laboratory analysis of time-integrated samples will be used to obtain chemical speciation of ambient PM composition and mercury in precipitation. Near-real-time measurements will be used to measure the ambient concentrations of PM mass and all gaseous species including Hg{sup 0} and RGM. Approximately of 18 months of field data will be collected at the SAM site to validate the proposed regional model simulations for episodic and seasonal …
Date:
October 2, 2004
Creator:
Crist, Kevin
Object Type:
Report
System:
The UNT Digital Library
Measuring the Plasma Density of a Ferroelectric Plasma Source in an Expanding Plasma
The initial density and electron temperature at the surface of a ferroelectric plasma source were deduced from floating probe measurements in an expanding plasma. The method exploits negative charging of the floating probe capacitance by fast flows before the expanding plasma reaches the probe. The temporal profiles of the plasma density can be obtained from the voltage traces of the discharge of the charged probe capacitance by the ion current from the expanding plasma. The temporal profiles of the plasma density, at two different distances from the surface of the ferroelectric plasma source, could be further fitted by using the density profiles for the expanding plasma. This gives the initial values of the plasma density and electron temperature at the surface. The method could be useful for any pulsed discharge, which is accompanied by considerable electromagnetic noise, if the initial plasma parameters might be deduced from measurements in expanding plasma.
Date:
October 2, 2003
Creator:
Dunaevsky, A. & Fisch, N. J.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of the Emission, Transport, and Deposition of Mercury, Fine Particulate Matter, and Arsenic From Coal-Based Power Plants in the Ohio River Valley Region Progress Report
Ohio University, in collaboration with CONSOL Energy, Advanced Technology Systems, Inc (ATS) and Atmospheric and Environmental Research, Inc. (AER) as subcontractors, is evaluating the impact of emissions from coal-fired power plants in the Ohio River Valley region as they relate to the transport and deposition of mercury, arsenic, and associated fine particulate matter. This evaluation will involve two interrelated areas of effort: ambient air monitoring and regional-scale modeling analysis. The scope of work for the ambient air monitoring will include the deployment of a surface air monitoring (SAM) station in southeastern Ohio. The SAM station will contain sampling equipment to collect and measure mercury (including speciated forms of mercury and wet and dry deposited mercury), arsenic, particulate matter (PM) mass, PM composition, and gaseous criteria pollutants (CO, NO{sub x}, SO{sub 2}, O{sub 3}, etc.). Laboratory analysis of time-integrated samples will be used to obtain chemical speciation of ambient PM composition and mercury in precipitation. Near-real-time measurements will be used to measure the ambient concentrations of PM mass and all gaseous species including Hg{sup 0} and RGM. Approximately of 18 months of field data will be collected at the SAM site to validate the proposed regional model simulations for episodic and …
Date:
October 2, 2003
Creator:
Crist, Kevin
Object Type:
Report
System:
The UNT Digital Library
Technical Basis Spent Nuclear Fuel (SNF) Project Radiation and Contamination Trending Program
This report documents the technical basis for the Spent Nuclear Fuel (SNF) Program radiation and contamination trending program. The program consists of standardized radiation and contamination surveys of the KE Basin, radiation surveys of the KW basin, radiation surveys of the Cold Vacuum Drying Facility (CVD), and radiation surveys of the Canister Storage Building (CSB) with the associated tracking. This report also discusses the remainder of radiological areas within the SNFP that do not have standardized trending programs and the basis for not having this program in those areas.
Date:
October 2, 2000
Creator:
ELGIN, J.C.
Object Type:
Report
System:
The UNT Digital Library
Process Hood Stand Support Steel
None
Date:
October 2, 2000
Creator:
Singh, G.
Object Type:
Report
System:
The UNT Digital Library
Use of IsoProbe for Uranium and Plutonium Analysis in Environmental Samples
The ability to detect and isotopically characterize uranium and plutonium in environmental samples is of primary importance in the search for nuclear proliferation. The utility of isotope ratio measurements for environmental monitoring is limited by sample preparation costs, measurement precision, and sensitivity. This is particularly true for wide-area monitoring where the number of samples required varies inversely with obtainable precision and sensitivity. This report summarizes an initial evaluation of the applicability of a new technique, magnetic-sector, multicollector, inductively-coupled-plasma mass spectrometry, to environmental sample analysis. This technique is embodied at Lawrence Livermore National Laboratory in the form of a commercially available instrument, the IsoProbe, manufactured by micromass, LTD. (United Kingdom). This is the second of the current generation of such instruments installed in the United States and the first within the Department of Energy complex. Inductively-coupled plasma mass spectrometry (ICPMS) using quadrupole mass filters has existed for roughly 15 years. Magnet sector instruments have also existed for about half that time and multicollector instruments have existed for nearly as long. Among the things that make the new generation of instruments, and the IsoProbe in particular, unique are (1) the use of a gas-collision cell to reduce the energy spread of the …
Date:
October 2, 2000
Creator:
Russ, G.P. & Williams, R.
Object Type:
Report
System:
The UNT Digital Library
Threshold size for ambient metastability of rocksalt CdSe nanocrystals
None
Date:
October 2, 2001
Creator:
Jacobs, Keren; Wickham, Juanita & Alivisatos, A. Paul
Object Type:
Article
System:
The UNT Digital Library