Novel QCD Phenomena (open access)

Novel QCD Phenomena

I discuss a number of novel topics in QCD, including the use of the AdS/CFT correspondence between Anti-de Sitter space and conformal gauge theories to obtain an analytically tractable approximation to QCD in the regime where the QCD coupling is large and constant. In particular, there is an exact correspondence between the fifth-dimension coordinate z of AdS space and a specific impact variable {zeta} which measures the separation of the quark constituents within the hadron in ordinary space-time. This connection allows one to compute the analytic form of the frame-independent light-front wavefunctions of mesons and baryons, the fundamental entities which encode hadron properties and allow the computation of exclusive scattering amplitudes. I also discuss a number of novel phenomenological features of QCD. Initial- and final-state interactions from gluon-exchange, normally neglected in the parton model, have a profound effect in QCD hard-scattering reactions, leading to leading-twist single-spin asymmetries, diffractive deep inelastic scattering, diffractive hard hadronic reactions, the breakdown of the Lam Tung relation in Drell-Yan reactions, and nuclear shadowing and non-universal antishadowing--leading-twist physics not incorporated in the light-front wavefunctions of the target computed in isolation. I also discuss tests of hidden color in nuclear wavefunctions, the use of diffraction to materialize …
Date: July 6, 2007
Creator: Brodsky, Stanley J.
Object Type: Article
System: The UNT Digital Library
New experimental capabilities and theoretical insights of high pressure compression waves (open access)

New experimental capabilities and theoretical insights of high pressure compression waves

Currently there are three platforms that offer quasi-isentropic compression or ramp-wave compression (RWC): light-gas gun, magnetic flux (Z-pinch), and laser. We focus here on the light-gas gun technique and on some current theoretical insights from experimental data. A gradient impedance through the length of the impactor provides the pressure pulse upon impactor to the subject material. Applications and results are given concerning high-pressure strength and liquid to solid, phase transition of water plus its associated phase fraction history. We also introduce the Korteweg-deVries-Burgers equation as a means to understand the evolution these RWC waves that propagate through the thickness of the subject material. This equation has the necessary competition between non-linear, dispersion, and dissipation processes, which is shown through observed structures that are manifested in the experimental particle velocity histories. Such methodology points towards a possible quantifiable dissipation, through which RWC experiments may be analyzed.
Date: July 20, 2007
Creator: Orlikowski, D.; Nguyen, J.; Patterson, J. R.; Minich, R.; Martin, L. P. & Holmes, N.
Object Type: Article
System: The UNT Digital Library
Diagnostic evaluation of a multiplexed RT-PCR microsphere array assay for the detection of foot-and-mouth disease virus and look-alike disease viruses (open access)

Diagnostic evaluation of a multiplexed RT-PCR microsphere array assay for the detection of foot-and-mouth disease virus and look-alike disease viruses

A high-throughput multiplexed assay was developed for the differential laboratory diagnosis of foot-and-mouth disease virus (FMDV) from viruses which cause clinically similar diseases of livestock. This assay simultaneously screens for five RNA and two DNA viruses using multiplexed reverse transcription PCR (mRT-PCR) amplification coupled with a microsphere hybridization array and flow-cytometric detection. Two of the seventeen primer-probe sets included in this multiplex assay were adopted from previously characterized real-time RT-PCR (rRT-PCR) assays for FMDV. The diagnostic accuracy of the mRT-PCR was evaluated using 287 field samples, including 248 (true positive n= 213, true negative n=34) from suspect cases of foot-and-mouth disease collected from 65 countries between 1965 and 2006 and 39 true negative samples collected from healthy animals. The mRT-PCR assay results were compared with two singleplex rRT-PCR assays, using virus isolation with antigen-ELISA as the reference method. The diagnostic sensitivity of the mRT-PCR assay for FMDV was 93.9% [95% C.I. 89.8-96.4%], compared to 98.1% [95% C.I. 95.3-99.3%] for the two singleplex rRT-PCR assays used in combination. In addition, the assay could reliably differentiate between FMDV and other vesicular viruses such as swine vesicular disease virus and vesicular exanthema of swine virus. Interestingly, the mRT-PCR detected parapoxvirus (n=2) and bovine …
Date: July 26, 2007
Creator: Hindson, B J; Reid, S M; Baker, B R; Ebert, K; Ferris, N P; Bentley Tammero, L F et al.
Object Type: Article
System: The UNT Digital Library
Dissecting Biological Dark Matter: Single Cell Genetic Analysis of TM7, a Rare and Uncultivated Microbe from the Human Mouth (open access)

Dissecting Biological Dark Matter: Single Cell Genetic Analysis of TM7, a Rare and Uncultivated Microbe from the Human Mouth

We have developed a microfluidic device that allows the isolation and genome amplification of individual microbial cells, thereby enabling organism-level genomic analysis of complex microbial ecosystems without the need for culture. This device was used to perform a directed survey of the human subgingival crevice and to isolate bacteria having rod-like morphology. Several isolated microbes had a 16S rRNA sequence that placed them in candidate phylum TM7, which has no cultivated or sequenced members. Genome amplification from individual TM7 cells allowed us to sequence and assemble >1,000 genes, providing insight into the physiology of members of this phylum. This approach enables single-cell genetic analysis of any uncultivated minority member of a microbial community.
Date: July 1, 2007
Creator: Fenner, Marsha W; Marcy, Yann; Ouverney, Cleber; Bik, Elisabeth M.; Losekann, Tina; Ivanova, Natalia et al.
Object Type: Article
System: The UNT Digital Library
Joint Groundwater Monitoring and Contamination Report: 2006 (open access)

Joint Groundwater Monitoring and Contamination Report: 2006

Annual report compiling information about required groundwater monitoring activities and cases of contamination by state-regulated activities during the YYYY calendar year. Includes tables with the enforcement status of each case of contamination.
Date: July 2007
Creator: Texas Groundwater Protection Committee
Object Type: Report
System: The Portal to Texas History
Sampling and Analysis Plan Waste Treatment Plant Seismic Boreholes Project. (open access)

Sampling and Analysis Plan Waste Treatment Plant Seismic Boreholes Project.

This sampling and analysis plan (SAP) describes planned data collection activities for four entry boreholes through the sediment overlying the Saddle Mountains Basalt, up to three new deep rotary boreholes through the Saddle Mountains Basalt and sedimentary interbeds, and one corehole through the Saddle Mountains Basalt and sedimentary interbeds at the Waste Treatment Plant (WTP) site. The SAP will be used in concert with the quality assurance plan for the project to guide the procedure development and data collection activities needed to support borehole drilling, geophysical measurements, and sampling. This SAP identifies the American Society of Testing Materials standards, Hanford Site procedures, and other guidance to be followed for data collection activities. Revision 3 incorporates all interim change notices (ICN) that were issued to Revision 2 prior to completion of sampling and analysis activities for the WTP Seismic Boreholes Project. This revision also incorporates changes to the exact number of samples submitted for dynamic testing as directed by the U.S. Army Corps of Engineers. Revision 3 represents the final version of the SAP.
Date: July 15, 2007
Creator: Brouns, Thomas M.
Object Type: Report
System: The UNT Digital Library
Deep Trek High Temperature Electronics Project (open access)

Deep Trek High Temperature Electronics Project

This report summarizes technical progress achieved during the cooperative research agreement between Honeywell and U.S. Department of Energy to develop high-temperature electronics. Objects of this development included Silicon-on-Insulator (SOI) wafer process development for high temperature, supporting design tools and libraries, and high temperature integrated circuit component development including FPGA, EEPROM, high-resolution A-to-D converter, and a precision amplifier.
Date: July 31, 2007
Creator: Ohme, Bruce
Object Type: Report
System: The UNT Digital Library
National Renewable Energy Laboratory (NREL) 2006 Research Review (open access)

National Renewable Energy Laboratory (NREL) 2006 Research Review

This 2006 issue of the NREL Research Review again reveals just how vital and diverse our research portfolio has become. Our feature story looks at how our move to embrace the tenants of "translational research" is strengthening our ability to meet the nation's energy goals. By closing the gap between basic science and applied research and development (R&D)--and focusing a bright light on the valuable end uses of our work--translational research promises to shorten the time it takes to push new technology off the lab bench and into the marketplace. This issue also examines our research into fuels of the future and our computer modeling of wind power deployment, both of which point out the real-world benefits of our work.
Date: July 1, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Study of Orbits Produced by Individual Booster Extraction Bump Windings for the NASA Space Radiation Laboratory (open access)

Study of Orbits Produced by Individual Booster Extraction Bump Windings for the NASA Space Radiation Laboratory

N/A
Date: July 1, 2007
Creator: L., Hammons; Ahrens, L. & Brown, K.
Object Type: Report
System: The UNT Digital Library
Deep Downhole Seismic Testing at the Waste Treatment Plant Site, Hanford, WA,Volume II. P-Wave Measurements in Borehole C4996 Seismic Records, Wave-Arrival Identifications and Interpreted P-Wave Velocity Profile. (open access)

Deep Downhole Seismic Testing at the Waste Treatment Plant Site, Hanford, WA,Volume II. P-Wave Measurements in Borehole C4996 Seismic Records, Wave-Arrival Identifications and Interpreted P-Wave Velocity Profile.

In this volume (II), all P-wave measurements are presented that were performed in Borehole C4996 at the Waste Treatment Plant (WTP) with T-Rex as the seismic source and the Lawrence Berkeley National Laboratory (LBNL) 3-D wireline geophone as the at-depth borehole receiver. P-wave measurements were performed over the depth range of 360 to 1400 ft, typically in 10-ft intervals. However, in some interbeds, 5-ft depth intervals were used, while below about 1180 ft, depth intervals of 20 ft were used. Compression (P) waves were generated by moving the base plate of T-Rex for a given number of cycles at a fixed frequency as discussed in Section 2. This process was repeated so that signal averaging in the time domain was performed using 3 to about 15 averages, with 5 averages typically used. In addition to the LBNL 3-D geophone, called the lower receiver herein, a 3-D geophone from Redpath Geophysics was fixed at a depth of 22 ft in Borehole C4996, and a 3-D geophone from the University of Texas was embedded near the borehole at about 1.5 ft below the ground surface. This volume is organized into 12 sections as follows: Section 1: Introduction, Section 2: Explanation of Terminology, …
Date: July 6, 2007
Creator: Stokoe, Kenneth H.; Li, Song Cheng; Cox, Brady R. & Menq, Farn-Yuh
Object Type: Report
System: The UNT Digital Library
Deep Downhole Seismic Testing at the Waste Treatment Plant Site, Hanford, WA,Volume I. P-Wave Measurements in Borehole C4993 Seismic Records, Wave-Arrival Identifications and Interpreted P-Wave Velocity Profile. (open access)

Deep Downhole Seismic Testing at the Waste Treatment Plant Site, Hanford, WA,Volume I. P-Wave Measurements in Borehole C4993 Seismic Records, Wave-Arrival Identifications and Interpreted P-Wave Velocity Profile.

In this volume (I), all P-wave measurements are presented that were performed in Borehole C4993 at the Waste Treatment Plant (WTP) with T-Rex as the seismic source and the Lawrence Berkeley National Laboratory (LBNL) 3-D wireline geophone as the at-depth borehole receiver. P-wave measurements were performed over the depth range of 370 to 1400 ft, typically in 10-ft intervals. However, in some interbeds, 5-ft depth intervals were used, while below about 1200 ft, depth intervals of 20 ft were used. Compression (P) waves were generated by moving the base plate of T-Rex for a given number of cycles at a fixed frequency as discussed in Section 2. This process was repeated so that signal averaging in the time domain was performed using 3 to about 15 averages, with 5 averages typically used. In addition to the LBNL 3-D geophone, called the lower receiver herein, a 3-D geophone from Redpath Geophysics was fixed at a depth of 22 ft in Borehole C4993, and a 3-D geophone from the University of Texas was embedded near the borehole at about 1.5 ft below the ground surface. This volume is organized into 12 sections as follows: Section 1: Introduction, Section 2: Explanation of Terminology, …
Date: July 6, 2007
Creator: Stokoe, Kenneth H.; Li, Song Cheng; Cox, Brady R. & Menq, Farn-Yuh
Object Type: Report
System: The UNT Digital Library
AN EVALUATION OF HANFORD SITE TANK FARM SUBSURFACE CONTAMINATION FY2007 (open access)

AN EVALUATION OF HANFORD SITE TANK FARM SUBSURFACE CONTAMINATION FY2007

The Tank Farm Vadose Zone (TFVZ) Project conducts activities to characterize and analyze the long-term environmental and human health impacts from tank waste releases to the vadose zone. The project also implements interim measures to mitigate impacts, and plans the remediation of waste releases from tank farms and associated facilities. The scope of this document is to report data needs that are important to estimating long-term human health and environmental risks. The scope does not include technologies needed to remediate contaminated soils and facilities, technologies needed to close tank farms, or management and regulatory decisions that will impact remediation and closure. This document is an update of ''A Summary and Evaluation of Hanford Site Tank Farm Subsurface Contamination''. That 1998 document summarized knowledge of subsurface contamination beneath the tank farms at the time. It included a preliminary conceptual model for migration of tank wastes through the vadose zone and an assessment of data and analysis gaps needed to update the conceptual model. This document provides a status of the data and analysis gaps previously defined and discussion of the gaps and needs that currently exist to support the stated mission of the TFVZ Project. The first data-gaps document provided the …
Date: July 10, 2007
Creator: MANN, F.M.
Object Type: Report
System: The UNT Digital Library
Intercollegiate Athletics: Recent Trends in Teams and Participants in National Collegiate Athletic Association Sports (open access)

Intercollegiate Athletics: Recent Trends in Teams and Participants in National Collegiate Athletic Association Sports

A letter report issued by the Government Accountability Office with an abstract that begins "Since the 1970s, the roles of women as both students and athletes have changed in higher education, with female enrollment surpassing male enrollment, and female athletic participation showing gains as well. These changes have generated public interest in whether women participate in athletics at comparable levels to men and whether men's opportunities have decreased as a result of the increased opportunities for women. Under the Comptroller General's authority, GAO assessed the extent to which the numbers of men's and women's intercollegiate sports teams and participants at 4-year colleges have changed from the 1991-1992 through 2004-2005 school years."
Date: July 12, 2007
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations (open access)

Scenarios of Greenhouse Gas Emissions and Atmospheric Concentrations

This report provides studies on greenhouse gas emissions and atmospheric concentrations which focuses on questions raised by decision-makers regarding U.S. climate change.
Date: July 2007
Creator: Climate Change Science Program (U.S.)
Object Type: Text
System: The UNT Digital Library
DOE Solar Energy Technologies Program FY 2006 Annual Report (open access)

DOE Solar Energy Technologies Program FY 2006 Annual Report

The DOE Solar Energy Technologies Program FY 2006 Annual Report chronicles the R&D results of the U.S. Department of Energy Solar Energy Technologies Program for Fiscal Year 2005. In particular, the report describes R&D performed by the Program's national laboratories (National Renewable Energy Laboratory, Sandia National Laboratories, Oak Ridge National Laboratory, and Brookhaven National Laboratory) and university and industry partners.
Date: July 1, 2007
Creator: unknown
Object Type: Report
System: The UNT Digital Library