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Timpson & Tenaha News (Timpson, Tex.), Vol. 19, No. 17, Ed. 1 Thursday, April 22, 2004 (open access)

Timpson & Tenaha News (Timpson, Tex.), Vol. 19, No. 17, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Alexander, Nancy
Object Type: Newspaper
System: The Portal to Texas History
Soil carbon changes for bioenergy crops. (open access)

Soil carbon changes for bioenergy crops.

Bioenergy crops, which displace fossil fuels when used to produce ethanol, biobased products, and/or electricity, have the potential to further reduce atmospheric carbon levels by building up soil carbon levels, especially when planted on lands where these levels have been reduced by intensive tillage. The purpose of this study is to improve the characterization of the soil carbon (C) sequestration for bioenergy crops (switchgrass, poplars, and willows) in the Greenhouse gases, Regulated Emissions, and Energy Use in Transportation (GREET) model (Wang 1999) by using the latest results reported in the literature and by Oak Ridge National Laboratory (ORNL). Because soil carbon sequestration for bioenergy crops can play a significant role in reducing greenhouse gas (GHG) emissions for cellulosic ethanol, it is important to periodically update the estimates of soil carbon sequestration from bioenergy crops as new and better data become available. We used the three-step process described below to conduct our study.
Date: April 22, 2004
Creator: Andress, D.
Object Type: Report
System: The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 106, No. 19, Ed. 1 Thursday, April 22, 2004 (open access)

Altus Times (Altus, Okla.), Vol. 106, No. 19, Ed. 1 Thursday, April 22, 2004

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Andrews, Mike
Object Type: Newspaper
System: The Gateway to Oklahoma History
Statistical Tools for Forensic Analysis of Toolmarks (open access)

Statistical Tools for Forensic Analysis of Toolmarks

Recovery and comparison of toolmarks, footprint impressions, and fractured surfaces connected to a crime scene are of great importance in forensic science. The purpose of this project is to provide statistical tools for the validation of the proposition that particular manufacturing processes produce marks on the work-product (or tool) that are substantially different from tool to tool. The approach to validation involves the collection of digital images of toolmarks produced by various tool manufacturing methods on produced work-products and the development of statistical methods for data reduction and analysis of the images. The developed statistical methods provide a means to objectively calculate a ''degree of association'' between matches of similarly produced toolmarks. The basis for statistical method development relies on ''discriminating criteria'' that examiners use to identify features and spatial relationships in their analysis of forensic samples. The developed data reduction algorithms utilize the same rules used by examiners for classification and association of toolmarks.
Date: April 22, 2004
Creator: Baldwin, David; Morris, Max; Bajic, Stan; Zhou, Zhigang & Kreiser, James
Object Type: Report
System: The UNT Digital Library
Growth of nanocrystalline MoO3 on Au(111) studied by in-situ STM (open access)

Growth of nanocrystalline MoO3 on Au(111) studied by in-situ STM

The growth of nanocrystalline MoO{sub 3} islands on Au(111) using physical vapor deposition of Mo has been studied by scanning tunneling microscopy (STM) and low energy electron diffraction (LEED). The growth conditions affect the shape and distribution of the MoO{sub 3} nanostructures, providing a means of preparing materials with different percentages of edge sites that may have different chemical and physical properties than atoms in the interior of the nanostructures. MoO{sub 3} islands were prepared by physical vapor deposition of Mo and subsequent oxidation by NO{sub 2}exposure at temperatures between 450 K and 600 K. They exhibit a crystalline structure with a c(4x2) periodicity relative to unreconstructed Au(111). While the atomic-scale structure is identical to that of MoO{sub 3} islands prepared by chemical vapor deposition, we demonstrate that the distribution of MoO{sub 3} islands on the Au(111) surface reflects the distribution of Mo clusters prior to oxidation although the growth of MoO{sub 3} involves long-range mass transport via volatile MoO{sub 3} precursor species. The island morphology is kinetically controlled at 450 K, whereas an equilibrium shape is approached at higher preparation temperatures or after prolonged annealing at the elevated temperature. Mo deposition at or above 525 K leads to the …
Date: April 22, 2004
Creator: Biener, M M; Biener, J; Schalek, R & Friend, C M
Object Type: Article
System: The UNT Digital Library
Final Report-DE FG02 92ER20061 (open access)

Final Report-DE FG02 92ER20061

A dosage analysis of gene expression was conducted using aneuploids of maize. The findings of this project led to the concept that regulatory genes in higher eukaryotes has mostly dosage dependent and are the underlying basis of quantitative traits and aneuploid syndromes.
Date: April 22, 2004
Creator: Birchler, James A.
Object Type: Report
System: The UNT Digital Library
Little Supersymmetry and the Supersymmetric Little Hierarchy Problem (open access)

Little Supersymmetry and the Supersymmetric Little Hierarchy Problem

The current experimental lower bound on the Higgs mass significantly restricts the allowed parameter space in most realistic supersymmetric models, with the consequence that these models exhibit significant fine-tuning. We propose a solution to this `supersymmetric little hierarchy problem'. We consider scenarios where the stop masses are relatively heavy - in the 500 GeV to a TeV range. Radiative stability of the Higgs soft mass against quantum corrections from the top quark Yukawa coupling is achieved by imposing a global SU(3) symmetry on this interaction. This global symmetry is only approximate - it is not respected by the gauge interactions. A subgroup of the global symmetry is gauged by the familiar SU(2) of the Standard Model. The physical Higgs is significantly lighter than the other scalars because it is the pseudo-Goldstone boson associated with the breaking of this symmetry. Radiative corrections to the Higgs potential naturally lead to the right pattern of gauge and global symmetry breaking. We show that both the gauge and global symmetries can be embedded into a single SU(6) grand unifying group, thereby maintaining the prediction of gauge coupling unification. Among the firm predictions of this class of models are new states with the quantum numbers …
Date: April 22, 2004
Creator: Birkedal, Andreas; Chacko, Z. & Gaillard, Mary K.
Object Type: Article
System: The UNT Digital Library
Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 89, No. 188, Ed. 1 Thursday, April 22, 2004 (open access)

Sapulpa Daily Herald (Sapulpa, Okla.), Vol. 89, No. 188, Ed. 1 Thursday, April 22, 2004

Daily newspaper from Sapulpa, Oklahoma that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Broaddus, Matthew B.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Perry Daily Journal (Perry, Okla.), Vol. 111, No. 78, Ed. 1 Thursday, April 22, 2004 (open access)

Perry Daily Journal (Perry, Okla.), Vol. 111, No. 78, Ed. 1 Thursday, April 22, 2004

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Brown, Gloria
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Canadian Record (Canadian, Tex.), Vol. 114, No. 17, Ed. 1 Thursday, April 22, 2004 (open access)

The Canadian Record (Canadian, Tex.), Vol. 114, No. 17, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date: April 22, 2004
Creator: Brown, Laurie Ezzell
Object Type: Newspaper
System: The Portal to Texas History
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, April 22, 2004 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, April 22, 2004

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Bush, Kent
Object Type: Newspaper
System: The Gateway to Oklahoma History
Determination of Sulfur in High-Level Waste Sludge by Inductively Coupled Plasma-Atomic Emission Spectroscopy and Ion Chromatography (open access)

Determination of Sulfur in High-Level Waste Sludge by Inductively Coupled Plasma-Atomic Emission Spectroscopy and Ion Chromatography

Significant differences (approximately 30 percent) have been observed in the sulfur measurements in high-level waste sludge by the Analytical Development Section (ADS) using the inductively coupled plasma-atomic emission spectroscopy (ICP-AES) method compared with the ADS ion chromatography (IC) method. Since the measured concentrations of sulfur in the sludge approached the maximum concentration that can be processed in the DWPF, experiments were performed to determine the source of the differences and assess the true accuracy of sulfur measurements.
Date: April 22, 2004
Creator: COLEMAN, CJ
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 143, Ed. 1 Thursday, April 22, 2004 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 82, No. 143, Ed. 1 Thursday, April 22, 2004

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
Grant No DE-FG02-03ER83720 Report for US Department of Engery (open access)

Grant No DE-FG02-03ER83720 Report for US Department of Engery

Effective and reliable nuclear monitoring requires discrimination between small magnitude explosions and earthquakes based on the use of limited regional data. Lg is generally the largest seismic phase from both explosion and earthquake sources recorded at regional distances. For small events, Lg may sometimes be the only well-recorded seismic phase so that discriminants based only on the use of Lg are especially desirable. Recent research has provided significantly better understanding of Lg by demonstrating that the explosion-generated Rg makes significant contribution to the low-frequency S or Lg from explosions. Near-source scattering of explosion-generated Rg appears to be a viable mechanism for generating low-frequency(< 2 Hz) Lg waves from explosions. Detailed knowledge of the complex scattering process is, however, still incomplete and is in fact the subject of several ongoing studies. Our analysis of regional data from nuclear explosions from both Nevada Test Site (NTS) and Kazakh Test Site (KTS) and nearby earthquakes in Phase I has suggested that there are several reliable source discrimination methods only based on the use of Lg at regional distances. These discriminants should be. especially useful for small magnitude seismic events for which Lg may be the only well-recorded seismic phase. Our results suggest four …
Date: April 22, 2004
Creator: Chan, Winston & Wagner, Robert
Object Type: Report
System: The UNT Digital Library
Resolving the Nature of the LMC Microlensing Event LMC-5 (open access)

Resolving the Nature of the LMC Microlensing Event LMC-5

The authors present the results from an analysis of Hubble Space Telescope High Resolution Camera data for the Large Magellanic Cloud microlensing event MACHO-LMC-5. By determining the parallax and proper motion of this object they find that the lens is an M dwarf star at a distance of 578{sub -53}{sup +65}pc with a proper motion of 21.39 {+-} 0.04 mas/yr. Based on the kinematics and location of this star is it more likely to be part of the Galactic thick disk than thin disk population. They confirm that the microlensing event LMC-5 is a jerk-parallax microlensing event.
Date: April 22, 2004
Creator: Drake, A J; Cook, K H & Keller, S C
Object Type: Article
System: The UNT Digital Library
High resolution modeling of direct ocean carbon sequestration (open access)

High resolution modeling of direct ocean carbon sequestration

This work has followed two themes: (1) Developing and using the adjoint of the MIT ocean biogeochemistry model to examine the efficiency of carbon sequestration in a global configuration. We have demonstrated the power of the adjoint method for systematic ocean model sensitivity studies. We have shown that the relative efficiency of carbon sequestration in the Atlantic and Pacific basins changes with the period of interest. For decadal to centennial scales, the Pacific is more efficient. On longer timescales the Atlantic is more efficient . (2) We have developed and applied a high-resolution, North Atlantic circulation and tracer model to investigate the role of the mesoscale in controlling sequestration efficiency. We show that the mesoscale eddy field, and its explicit representation, significantly affects the estimated sequestration efficiency for local sources on the Eastern US seaboard.
Date: April 22, 2004
Creator: Follows, Michael & Marshall, John
Object Type: Report
System: The UNT Digital Library
Today Cedar Hill (Duncanville, Tex.), Vol. 39, No. 4, Ed. 1 Thursday, April 22, 2004 (open access)

Today Cedar Hill (Duncanville, Tex.), Vol. 39, No. 4, Ed. 1 Thursday, April 22, 2004

Weekly newspaper published in Duncanville, Texas that includes local Cedar Hill, state, and national news along with advertising.
Date: April 22, 2004
Creator: Gooch, Robin
Object Type: Newspaper
System: The Portal to Texas History
Garber Billings News (Garber, Okla.), Vol. 104, No. 26, Ed. 1 Thursday, April 22, 2004 (open access)

Garber Billings News (Garber, Okla.), Vol. 104, No. 26, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Garber, Oklahoma that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Hogan, Vickie Lee
Object Type: Newspaper
System: The Gateway to Oklahoma History
H.R. 1417: The Copyright Royalty and Distribution Reform Act of 2004 (open access)

H.R. 1417: The Copyright Royalty and Distribution Reform Act of 2004

H.R. 1417, 108th Congress, first session, was introduced on March 25, 2003 and passed by the House on March 3, 2004. If enacted, this bill would make extensive changed to the procedural framework for adjudicating royalty rates for compulsory licenses under the Copyright Act. This report details the background and legislative action on the Copyright Royalty and Distribution Reform Act of 2004.
Date: April 22, 2004
Creator: Jeweler, Robin
Object Type: Report
System: The UNT Digital Library
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 34, No. 17, Ed. 1 Thursday, April 22, 2004 (open access)

Port Aransas South Jetty (Port Aransas, Tex.), Vol. 34, No. 17, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with advertising.
Date: April 22, 2004
Creator: Judson, Mary
Object Type: Newspaper
System: The Portal to Texas History
Port Aransas South Jetty (Port Aransas, Tex.), Vol. 34, No. 17, Ed. 1 Thursday, April 22, 2004 (open access)

Port Aransas South Jetty (Port Aransas, Tex.), Vol. 34, No. 17, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Port Aransas, Texas on Mustang Island that includes local, state and national news along with advertising.
Date: April 22, 2004
Creator: Judson, Mary
Object Type: Newspaper
System: The Portal to Texas History
The Oklahoma Daily (Norman, Okla.), Vol. 87, No. 147, Ed. 1 Thursday, April 22, 2004 (open access)

The Oklahoma Daily (Norman, Okla.), Vol. 87, No. 147, Ed. 1 Thursday, April 22, 2004

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date: April 22, 2004
Creator: King, Christopher R.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Archer County News (Archer City, Tex.), No. 17, Ed. 1 Thursday, April 22, 2004 (open access)

Archer County News (Archer City, Tex.), No. 17, Ed. 1 Thursday, April 22, 2004

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: April 22, 2004
Creator: Lewis, Shelley
Object Type: Newspaper
System: The Portal to Texas History
Validation of Stress Corrosion Cracking Model for High Level Radioactive-Waste Packages (open access)

Validation of Stress Corrosion Cracking Model for High Level Radioactive-Waste Packages

A stress corrosion cracking (SCC) model has been adapted for performance prediction of high level radioactive-waste packages to be emplaced in the proposed Yucca Mountain radioactive-waste repository. SCC is one form of environmentally assisted cracking resulting from the presence of three factors: metallurgical susceptibility, critical environment, and tensile stresses. For waste packages of the proposed Yucca Mountain repository, the outer barrier material is the highly corrosion-resistant Alloy UNS-N06022, the environment is represented by the water film present on the surface of the waste package from dripping or deliquescence of soluble salts present in any surface deposits, and the stress is principally the weld induced residual stress. SCC has historically been separated into 'initiation' and 'propagation' phases. Initiation of SCC will not occur on a smooth surface if the surface stress is below a threshold value defined as the threshold stress. Cracks can also initiate at and propagate from flaws (or defects) resulting from manufacturing processes (such as welding). To account for crack propagation, the slip dissolution/film rupture (SDFR) model is adopted to provide mathematical formulae for prediction of the crack growth rate. Once the crack growth rate at an initiated SCC is determined, it can be used by the performance …
Date: April 22, 2004
Creator: Lu, S; Gordon, G & Andresen, P
Object Type: Article
System: The UNT Digital Library