Remaining Sites Verification Package for the 100-D-9 Boiler Fuel Oil Tank Site, Waste Site Reclassification Form 2006-030 (open access)

Remaining Sites Verification Package for the 100-D-9 Boiler Fuel Oil Tank Site, Waste Site Reclassification Form 2006-030

The 100-D-9 site is the former location of an underground storage tank used for holding fuel for the 184-DA Boiler House. Results of soil-gas samples taken from six soil-gas probes in a rectangle around the site the tank had been removed from concluded that there were no volatile organic compounds at detectable levels in the area. The 100-D-9 Boiler Fuel Oil Tank Site meets the remedial action objectives specified in the Remaining Sites ROD. The results demonstrated that residual contaminant concentrations do not preclude any future uses and allow for unrestricted use of shallow zone soils. The results also demonstrate that residual contaminant concentrations are protective of groundwater and the Columbia River.
Date: August 10, 2006
Creator: Dittmer, L. M.
Object Type: Report
System: The UNT Digital Library
Cleanup Verification Package for the 618-8 Burial Ground (open access)

Cleanup Verification Package for the 618-8 Burial Ground

This cleanup verification package documents completion of remedial action for the 618-8 Burial Ground, also referred to as the Solid Waste Burial Ground No. 8, 318-8, and the Early Solid Waste Burial Ground. During its period of operation, the 618-8 site is speculated to have been used to bury uranium-contaminated waste derived from fuel manufacturing, and construction debris from the remodeling of the 313 Building.
Date: August 10, 2006
Creator: Appel, M. J.
Object Type: Report
System: The UNT Digital Library
Longitudinal double-spin asymmetry and cross section for inclusivejet production in polarized proton collisions at sqrt(s) = 200 GeV (open access)

Longitudinal double-spin asymmetry and cross section for inclusivejet production in polarized proton collisions at sqrt(s) = 200 GeV

We report a measurement of the longitudinal double-spinasymmetry A_LL and the differential cross section for inclusivemidrapidity jet production in polarized proton collisions at sqrt(s)=200GeV. The cross section data cover transverse momenta 5<pT<50GeV/c and agree with next-to-leading order perturbative QCD evaluations.The A_LL data cover 5<pT<17 GeV/c and disfavor at 98 percentC.L. maximal positive gluon polarization in the polarizednucleon.
Date: August 10, 2006
Creator: Abelev, B. I.; Adams, J.; Aggarwal, M. M.; Ahammed, Z.; Amonett, J.; Anderson, B. D. et al.
Object Type: Article
System: The UNT Digital Library
Employment Discrimination and Retaliation Claims: A Legal Analysis of the Supreme Court Ruling in Burlington Northern and Santa Fe Railway Co. v. White (open access)
The Animal Welfare Act: Background and Selected Legislation (open access)

The Animal Welfare Act: Background and Selected Legislation

This report is on The Animal Welfare Act: Background and Selected Legislation.
Date: August 10, 2006
Creator: Becker, Geoffrey S.
Object Type: Report
System: The UNT Digital Library
U.S. Forces in Iraq (open access)

U.S. Forces in Iraq

None
Date: August 10, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Non-Destructive Evaluation of Thermal Spray Coating Interface Quality By Eddy Current Method (open access)

Non-Destructive Evaluation of Thermal Spray Coating Interface Quality By Eddy Current Method

Thermal spray coating is usually applied through directing molten or softened particles at very high velocities onto a substrate. An eddy current non-destructive inspection technique is presented here for thermal spray coating interface quality characterization. Several high-velocity-oxy-fuel (HVOF) coated steel plates were produced with various surface preparation conditions or spray process parameters. A quad-frequency eddy current probe was used to manually scan over the coating surface to evaluate the bonding quality. Experimental results show that different surface preparation conditions and varied process parameters can be successfully differentiated by the impedance value observed from the eddy current probe. The measurement is fairly robust and consistent. This non-contact, nondestructive, easy-to-use technique has the potential for evaluating the coating quality immediately after its application so that any defects can be corrected immediately.
Date: August 10, 2006
Creator: Mi, B.; Zhao, G. & Bayles, R.
Object Type: Report
System: The UNT Digital Library
The Cold Mass Support System and the Helium Cooling System for the MICE Focusing Solenoid (open access)

The Cold Mass Support System and the Helium Cooling System for the MICE Focusing Solenoid

The heart of the absorber focus coil (AFC) module for the muon ionization cooling experiment (MICE) is the two-coil superconducting solenoid that surrounds the muon absorber. The superconducting magnet focuses the muons that are cooled using ionization cooling, in order to improve the efficiency of cooling. The coils of the magnet may either be run in the solenoid mode (both coils operate at the same polarity) or the gradient (the coils operate at opposite polarity). The AFC magnet cold mass support system is designed to carry a longitudinal force up to 700 kN. The AFC module will be cooled using three pulse tube coolers that produce 1.5 W of cooling at 4.2 K. One of the coolers will be used to cool the liquid (hydrogen or helium) absorber used for ionization cooling. The other two coolers will cool the superconducting solenoid. This report will describe the MICE AFC magnet. The cold mass supports will be discussed. The reasons for using a pulsed tube cooler to cool this superconducting magnet will also be discussed.
Date: August 10, 2006
Creator: Yang, Stephanie Q.; Green, Michael A.; Lau, Wing W.; Senanayake,Rohan S. & Witte, Holger
Object Type: Article
System: The UNT Digital Library
Effect of Aggregation on Thermal Conduction in Colloidal Nanofluids (open access)

Effect of Aggregation on Thermal Conduction in Colloidal Nanofluids

Using effective medium theory we demonstrate that the thermal conductivity of nanofluids can be significantly enhanced by the aggregation of nanoparticles into clusters. The enhancement is based purely on conduction and does not require a novel mechanism. Predictions of the effective medium theory are in excellent agreement with detailed numerical calculations on model nanofluids involving fractal clusters and show the importance of cluster morphology on thermal conductivity enhancements.
Date: August 10, 2006
Creator: Prasher, R; Evans, W; Fish, J; Meakin, P; Phelan, P & Keblinski, Pawel
Object Type: Article
System: The UNT Digital Library
Final Performance Report on Linear Collider Tracker Simulation and Alignment R&D (open access)

Final Performance Report on Linear Collider Tracker Simulation and Alignment R&D

Progress on alignment system R&D for a Linear Collider detector tracking system is reported, along with progress on physics and detector simulations relevant to the design of a high-precision tracking subdetector.
Date: August 10, 2006
Creator: Riles, John Keith
Object Type: Report
System: The UNT Digital Library
Extraordinary Tools for Extraordinary Science: The Impact ofSciDAC on Accelerator Science&Technology (open access)

Extraordinary Tools for Extraordinary Science: The Impact ofSciDAC on Accelerator Science&Technology

Particle accelerators are among the most complex and versatile instruments of scientific exploration. They have enabled remarkable scientific discoveries and important technological advances that span all programs within the DOE Office of Science (DOE/SC). The importance of accelerators to the DOE/SC mission is evident from an examination of the DOE document, ''Facilities for the Future of Science: A Twenty-Year Outlook''. Of the 28 facilities listed, 13 involve accelerators. Thanks to SciDAC, a powerful suite of parallel simulation tools has been developed that represent a paradigm shift in computational accelerator science. Simulations that used to take weeks or more now take hours, and simulations that were once thought impossible are now performed routinely. These codes have been applied to many important projects of DOE/SC including existing facilities (the Tevatron complex, the Relativistic Heavy Ion Collider), facilities under construction (the Large Hadron Collider, the Spallation Neutron Source, the Linac Coherent Light Source), and to future facilities (the International Linear Collider, the Rare Isotope Accelerator). The new codes have also been used to explore innovative approaches to charged particle acceleration. These approaches, based on the extremely intense fields that can be present in lasers and plasmas, may one day provide a path to …
Date: August 10, 2006
Creator: Ryne, Robert D.
Object Type: Article
System: The UNT Digital Library
Physical and Numerical Analysis of Extrusion Process for Production of Bimetallic Tubes (open access)

Physical and Numerical Analysis of Extrusion Process for Production of Bimetallic Tubes

Bimetallic tubes are used for very specific applications where one of the two metals provides strength and the other provides specific properties such as aqueous corrosion and carburization, coking resistance, and special electrical and thermal properties. Bimetallic tubes have application in pulp and paper industry for heat-recovery boilers, in the chemical industry for ethylene production, and in the petrochemical industry for deep oil well explorations. Although bimetallic tubes have major applications in energy-intensive industry, they often are not used because of their cost and manufacturing sources in the United States. This project was intended to address both of these issues.
Date: August 10, 2006
Creator: Misiolek, W. Z. & Sikka, V. K.
Object Type: Report
System: The UNT Digital Library
An Integrated Front-End Readout And Feature Extraction System for the BaBar Drift Chamber (open access)

An Integrated Front-End Readout And Feature Extraction System for the BaBar Drift Chamber

The BABAR experiment has been operating at SLAC's PEP-II asymmetric B-Factory since 1999. The accelerator has achieved more than three times its original design luminosity of 3 x 10{sup 33} cm{sup -2} s{sup -1}, with plans for an additional factor of three in the next two years. To meet the experiment's performance requirements in the face of significantly higher trigger and background rates, the drift chamber's front-end readout system has been redesigned around the Xilinx Spartan 3 FPGA. The new system implements analysis and feature-extraction of digitized waveforms in the front-end, reducing the data bandwidth required by a factor of four.
Date: August 10, 2006
Creator: Zhang, Jinlong
Object Type: Article
System: The UNT Digital Library
CHARACTERIZATION AND MONITORING OF NATURAL ATTENUATION OF CHLORINATED SOLVENTS IN GROUNDWATER: A SYSTEMS APPROACH (open access)

CHARACTERIZATION AND MONITORING OF NATURAL ATTENUATION OF CHLORINATED SOLVENTS IN GROUNDWATER: A SYSTEMS APPROACH

The objective of this document is to examine the use of a phased approach to characterizing and monitoring (C&M) natural attenuation processes and enhanced attenuation processes and to identify promising tools and techniques by which to accomplish the C&M. We will investigate developing techniques, such as molecular-based assessment tools, and existing tools that traditionally have not been used for monitoring the performance of environmental remediation technologies. Case studies will be used to provide examples of how non-traditional methods are being employed as characterization and monitoring tools to support MNA and EA. The document is not focused on a specific group of readers but rather is broadly directed with the intent that readers may gain information useful to their purposes. Thus, regulators may see some future characterization and monitoring techniques; end users may find novel ways to make MNA or EA more effective or efficient at their site; researchers may identify new areas for development or new and better combinations of existing methods. One consequence of this broad approach is that some readers may find certain sections either too rudimentary or too advanced for their needs. Hopefully, all will be able to use at least some of the document.
Date: August 10, 2006
Creator: Looney, B.; Michael Heitkamp, M.; Gary Wein (NOEMAIL), G.; Christopher Bagwell, C.; Karen Vangelas, K.; Karen-M Adams, K. et al.
Object Type: Report
System: The UNT Digital Library
Enhanced Attenuation: A Reference Guide on Approaches to Increase the Natural Treatment Capacity of a System (open access)

Enhanced Attenuation: A Reference Guide on Approaches to Increase the Natural Treatment Capacity of a System

The objective of this document is to explore the realm of enhancements to natural attenuation processes for cVOCs and review examples that have been proposed, modeled, and implemented. We will identify lessons learned from these case studies to confirm that enhancements are technically feasible and have the potential to achieve a favorable, cost-effective contaminant mass balance. Furthermore, we hope to determine if opportunities for further improvement of the enhancements exist and suggest areas where new and innovative types of enhancements might be possible.
Date: August 10, 2006
Creator: Looney, B.; Michael Heitkamp, M.; Gary Wein (NOEMAIL), G.; Karen Vangelas, K.; Karen-M Adams, K.; Early, Tom et al.
Object Type: Report
System: The UNT Digital Library
A Comprehensive Theory of Yielding and Failure for Isotropic Materials (open access)

A Comprehensive Theory of Yielding and Failure for Isotropic Materials

A theory of yielding and failure for homogeneous and isotropic materials is given. The theory is calibrated by two independent, measurable properties and from those it predicts possible failure for any given state of stress. It also differentiates between ductile yielding and brittle failure. The explicit ductile-brittle criterion depends not only upon the material specification through the two properties, but also and equally importantly depends upon the type of imposed stress state. The Mises criterion is a special (limiting) case of the present theory. A close examination of this case shows that the Mises material idealization does not necessarily imply ductile behavior under all conditions, only under most conditions. When the first invariant of the yield/failure stress state is sufficiently large relative to the distortional part, brittle failure will be expected to occur. For general material types, it is shown that it is possible to have a state of spreading plastic flow, but as the elastic-plastic boundary advances, the conditions for yielding on it can change over to conditions for brittle failure because of the evolving stress state. The general theory is of a three dimensional form and it applies to full density materials for which the yield/failure strength in …
Date: August 10, 2006
Creator: Christensen, R M
Object Type: Article
System: The UNT Digital Library
A Retrospective of House Rules Changes Since the 104th Congress (open access)

A Retrospective of House Rules Changes Since the 104th Congress

None
Date: August 10, 2006
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Biennial Budgeting: Issues and Options (open access)

Biennial Budgeting: Issues and Options

This report is categorized into five categories: (I) Introduction, (II) Arguments Favoring and Opposing Biennial Budgeting, (III) Legislative History of Biennial Budgeting, (IV) Types of Biennial Budgeting and (V) Biennial Budgeting in the states.
Date: August 10, 2006
Creator: Saturno, James V.
Object Type: Report
System: The UNT Digital Library
Faster Productivity Growth: Who Benefits? (open access)

Faster Productivity Growth: Who Benefits?

This report discusses about productivity, the link between Productivity and Wages, Measuring Labor Income and Labor's Share of National Income.
Date: August 10, 2006
Creator: Cashell, Brian W.
Object Type: Report
System: The UNT Digital Library
FY06 ANNUAL REPORT FOR ENVIRONMENTAL MANAGEMENT SCIENCE PROGRAM PROJECT #95061STRATEGIC DESIGN AND OPTIMIZATION OF INORGANIC SORBENTSFOR CESIUM, STRONTIUM AND ACTINIDES (open access)

FY06 ANNUAL REPORT FOR ENVIRONMENTAL MANAGEMENT SCIENCE PROGRAM PROJECT #95061STRATEGIC DESIGN AND OPTIMIZATION OF INORGANIC SORBENTSFOR CESIUM, STRONTIUM AND ACTINIDES

The basic science goal in this project identifies structure/affinity relationships for selected radionuclides and existing sorbents. The task will apply this knowledge to the design and synthesis of new sorbents that will exhibit increased affinity for cesium, strontium and actinide separations. The target problem focuses on the treatment of high-level nuclear wastes. The general approach can likewise be applied to nonradioactive separations. During the fifth year of the project our studies focused along the following paths: (1) determination of Cs{sup +} ion exchange mechanism in sodium titanium silicates with sitinikite topology and the influence of crystallinity on ion exchange, (2) synthesis and characterization of novel peroxo-titanate materials for strontium and actinide separations, and (3) further refinements in computational models for the CST and polyoxoniobate materials.
Date: August 10, 2006
Creator: Hobbs, D
Object Type: Report
System: The UNT Digital Library
Orthodox etching of HVPE-grown GaN (open access)

Orthodox etching of HVPE-grown GaN

Orthodox etching of HVPE-grown GaN in molten eutectic of KOH + NaOH (E etch) and in hot sulfuric and phosphoric acids (HH etch) is discussed in detail. Three size grades of pits are formed by the preferential E etching at the outcrops of threading dislocations on the Ga-polar surface of GaN. Using transmission electron microscopy (TEM) as the calibration tool it is shown that the largest pits are formed on screw, intermediate on mixed and the smallest on edge dislocations. This sequence of size does not follow the sequence of the Burgers values (and thus the magnitude of the elastic energy) of corresponding dislocations. This discrepancy is explained taking into account the effect of decoration of dislocations, the degree of which is expected to be different depending on the lattice deformation around the dislocations, i.e. on the edge component of the Burgers vector. It is argued that the large scatter of optimal etching temperatures required for revealing all three types of dislocations in HVPE-grown samples from different sources also depends upon the energetic status of dislocations. The role of kinetics for reliability of etching in both etches is discussed and the way of optimization of the etching parameters is shown.
Date: August 10, 2006
Creator: Weyher, J. L.; Lazar, S.; Macht, L.; Liliental-Weber, Z.; Molnar, R. J.; Muller, S. et al.
Object Type: Article
System: The UNT Digital Library
Collimated Jet Or Expanding Outflow: Possible Origins of GRBs And X-Ray Flashes (open access)

Collimated Jet Or Expanding Outflow: Possible Origins of GRBs And X-Ray Flashes

We investigate the dynamics of an injected outflow propagating in a progenitor in the context of the collapsar model for gamma-ray bursts (GRBs) through two dimensional axisymmetric relativistic hydrodynamic simulations. Initially, we locally inject an outflow near the center of a progenitor. We calculate 25 models, in total, by fixing its total input energy to be 10{sup 51} ergs s{sup -1} and radius of the injected outflow to be 7 x 10{sup 7} cm while varying its bulk Lorentz factor, {Lambda}{sub 0} = 1.05 {approx} 5, and its specific internal energy, {epsilon}{sub 0}/c{sup 2} 30 (with c being speed of light). The injected outflow propagates in the progenitor and drives a large-scale outflow or jet. We find a smooth but dramatic transition from a collimated jet to an expanding outflow among calculated models. The opening angle of the outflow ({theta}{sub sim}) is sensitive to {Lambda}{sub 0}; we find {theta}{sub sim} &lt; 2{sup o} for {Lambda}{sub 0} {approx}&gt; 3. The maximum Lorentz factor is, on the other hand, sensitive to both of {Lambda}{sub 0} and {epsilon}{sub 0}; roughly {Lambda}{sub max} {approx} {Lambda}{sub 0}(1 + {epsilon}{sub 0}/c{sup 2}). In particular, a very high Lorentz factor of {Lambda}{sub max} {approx}&gt; 100 is achieved …
Date: August 10, 2006
Creator: Mizuta, Akira; /Kyoto U., Yukawa Inst., Kyoto /Garching, Max Planck Inst.; Yamasaki, Tatsuya; /Kyoto U., Yukawa Inst., Kyoto; Nagataki, Shigehiro; /Kyoto U., Yukawa Inst., Kyoto /KIPAC, Menlo Park et al.
Object Type: Article
System: The UNT Digital Library
Proceedings of Riken Bnl Research Center Workhshop Entitled Qcd in Extreme Conditions. (Volume 83) (open access)

Proceedings of Riken Bnl Research Center Workhshop Entitled Qcd in Extreme Conditions. (Volume 83)

None
Date: August 10, 2006
Creator: Datta, S.; Pisarski, R.; Petreczky, P. & Schmidt, C.
Object Type: Article
System: The UNT Digital Library
U.S. Nuclear Weapons: Changes in Policy and Force Structure (open access)

U.S. Nuclear Weapons: Changes in Policy and Force Structure

The Bush Administration conducted a review of U.S. nuclear weapons force posture during its first year in office. Although the review sought to adjust U.S. nuclear posture to address changes in the international security environment at the start of the new century, it continued many of the policies and programs that had been a part of the U.S. nuclear posture during the previous decade and during the Cold War. This report, which will be updated as needed, provides an overview of the U.S. nuclear posture to highlight areas of change and areas of continuity.
Date: August 10, 2006
Creator: Woolf, Amy F.
Object Type: Report
System: The UNT Digital Library