23,188 Matching Results

Results open in a new window/tab.

The Controlled Synthesis of Metastable Oxides Utilizing Epitaxy and Epitaxial Stabilization (open access)

The Controlled Synthesis of Metastable Oxides Utilizing Epitaxy and Epitaxial Stabilization

The research enabled by this DOE grant led to 13 publications in leading refereed journals including Physical Review Letters and Applied Physics Letters as well as feature articles in the Journal of the American Ceramic Society and Physik Journal (the German equivalent of Physics Today distributed to all members of the German Physical Society) on the controlled synthesis of metastable oxides utilizing epitaxy and epitaxial stabilization. In total our results fill over 100 pages of archived journals and are attached.
Date: October 30, 2009
Creator: Schlom, Dr. Darrell G.
Object Type: Report
System: The UNT Digital Library
Coupling Sorption to Soil Weathering During Reactive Transport: Impacts of Mineral Transformation and Sorbent Aging on Contaminant Speciation and Mobility (open access)

Coupling Sorption to Soil Weathering During Reactive Transport: Impacts of Mineral Transformation and Sorbent Aging on Contaminant Speciation and Mobility

This project aimed for a predictive-mechanistic understanding of the coupling between mineral weathering and contaminant (Cs, Sr, I) transport/fate in caustic waste-impacted sediments. Based on our prior studies of model clay mineral systems, we postulated that contaminant uptake to Hanford sediments would reflect concurrent adsorption and co-precipitation effects. Our specific objectives were: (1) to assess the molecular-scale mechanisms responsible for time-dependent sequestration of contaminants (Cs, Sr and I) during penetration of waste-induced weathering fronts; (2) to determine the rate and extent of contaminant release from the sorbed state; (3) to develop a reactive transport model based on molecular mechanisms and macroscopic flow experiments [(1) and (2)] that simulates adsorption, aging, and desorption dynamics. Progress toward achieving each of these objectives is discussed below. We observed unique molecular mechanisms for sequestration of Sr, Cs and I during native silicate weathering in caustic waste. Product solids, which included poorly crystalline aluminosilicates and well-crystallized zeolites and feldspathoids, accumulate contaminant species during crystal growth.
Date: October 30, 2009
Creator: Chorover, J.; Mueller, K. T.; O'Day, P. A.; Serne, R. J. & Steefel, C. I.
Object Type: Report
System: The UNT Digital Library
Dallas Voice (Dallas, Tex.), Vol. 26, No. 24, Ed. 1 Friday, October 30, 2009 (open access)

Dallas Voice (Dallas, Tex.), Vol. 26, No. 24, Ed. 1 Friday, October 30, 2009

Weekly newspaper from Dallas, Texas that includes local, state, and national news and advertising of interest to the Lesbian, Gay, Bisexual, and Transgender (LGBT) community.
Date: October 30, 2009
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Friday, October 30, 2009 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Friday, October 30, 2009

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: October 30, 2009
Creator: Pittman, Jerry & Wray, Kelly
Object Type: Newspaper
System: The Gateway to Oklahoma History
Facility for Advanced Accelerator Experimental Tests at SLAC (FACET) Conceptual Design Report (open access)

Facility for Advanced Accelerator Experimental Tests at SLAC (FACET) Conceptual Design Report

This Conceptual Design Report (CDR) describes the design of FACET. It will be updated to stay current with the developing design of the facility. This CDR begins as the baseline conceptual design and will evolve into an 'as-built' manual for the completed facility. The Executive Summary, Chapter 1, gives an introduction to the FACET project and describes the salient features of its design. Chapter 2 gives an overview of FACET. It describes the general parameters of the machine and the basic approaches to implementation. The FACET project does not include the implementation of specific scientific experiments either for plasma wake-field acceleration for other applications. Nonetheless, enough work has been done to define potential experiments to assure that the facility can meet the requirements of the experimental community. Chapter 3, Scientific Case, describes the planned plasma wakefield and other experiments. Chapter 4, Technical Description of FACET, describes the parameters and design of all technical systems of FACET. FACET uses the first two thirds of the existing SLAC linac to accelerate the beam to about 20GeV, and compress it with the aid of two chicanes, located in Sector 10 and Sector 20. The Sector 20 area will include a focusing system, the …
Date: October 30, 2009
Creator: Amann, J. & Bane, K.
Object Type: Report
System: The UNT Digital Library
Federal Energy Management: Agencies Are Taking Steps to Meet High-Performance Federal Building Requirements, but Face Challenges (open access)

Federal Energy Management: Agencies Are Taking Steps to Meet High-Performance Federal Building Requirements, but Face Challenges

A letter report issued by the Government Accountability Office with an abstract that begins "The federal government is the nation's largest energy consumer. The Energy Independence and Security Act of 2007 (EISA) establishes high-performance federal building requirements that include reducing energy use and managing storm water runoff. The Department of Energy (DOE), General Services Administration (GSA), Office of Management and Budget (OMB), and Environmental Protection Agency (EPA) are implementing and, in turn, helping other agencies to implement EISA requirements. The American Recovery and Reinvestment Act of 2009 (Recovery Act) provides funding that some agencies can use to carry out EISA high-performance federal building requirements. This report, required by EISA, addresses (1) what implementing agencies are doing to direct and assist other agencies in meeting key EISA high-performance federal building requirements, (2) how implementing agencies are planning to use Recovery Act funds to meet key requirements, and (3) what challenges implementing and other agencies might face. To do this, GAO reviewed legal materials, guidance, draft energy data, and other documents and interviewed agency officials and stakeholders. DOE and GSA generally agreed with the report's findings and conclusions and provided written comments. OMB neither agreed nor disagreed with the report and provided …
Date: October 30, 2009
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Final Report: Migration Mechanisms for Large-scale Parallel Applications (open access)

Final Report: Migration Mechanisms for Large-scale Parallel Applications

Process migration is the ability to transfer a process from one machine to another. It is a useful facility in distributed computing environments, especially as computing devices become more pervasive and Internet access becomes more ubiquitous. The potential benefits of process migration, among others, are fault resilience by migrating processes off of faulty hosts, data access locality by migrating processes closer to the data, better system response time by migrating processes closer to users, dynamic load balancing by migrating processes to less loaded hosts, and improved service availability and administration by migrating processes before host maintenance so that applications can continue to run with minimal downtime. Although process migration provides substantial potential benefits and many approaches have been considered, achieving transparent process migration functionality has been difficult in practice. To address this problem, our work has designed, implemented, and evaluated new and powerful transparent process checkpoint-restart and migration mechanisms for desktop, server, and parallel applications that operate across heterogeneous cluster and mobile computing environments. A key aspect of this work has been to introduce lightweight operating system virtualization to provide processes with private, virtual namespaces that decouple and isolate processes from dependencies on the host operating system instance. This decoupling …
Date: October 30, 2009
Creator: Nieh, Jason
Object Type: Report
System: The UNT Digital Library
Fire Grants: FEMA Has Met Most Requirements for Awarding Fire Grants, but Additional Actions Would Improve Its Grant Process (open access)

Fire Grants: FEMA Has Met Most Requirements for Awarding Fire Grants, but Additional Actions Would Improve Its Grant Process

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security, through the Federal Emergency Management Agency (FEMA), awards grants to fire departments and other organizations for equipment, staffing, and other needs. As of July 2009, FEMA had received about 25,000 and 22,000 applications for its fiscal years 2007 and 2008 fire grant programs, respectively, and had awarded more than 5,000 grants in both years. GAO was congressionally directed to review the application and award process for these grants. This report addresses the (1) extent to which FEMA has met statutory and program requirements for distributing the grant funds; (2) actions FEMA has taken to provide assistance to grant applicants and involve the fire service community in the grant process; and (3) extent to which FEMA has ensured that its grant process is accessible, clear, and consistent with requirements, including its grant guidance. GAO analyzed relevant laws and interviewed 36 randomly selected grant applicants to obtain their views, but the results are not generalizable."
Date: October 30, 2009
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
First-principles investigations of the dielectric properties of polypropylene/metal-oxide interfaces (open access)

First-principles investigations of the dielectric properties of polypropylene/metal-oxide interfaces

Article on first-principles investigations of the dielectric properties of polypropylene/metal-oxide interfaces. Nanoscale-resolved dielectric properties of polypropylene/metal-oxide (alumina, PbTiO₃) interfaces and of the corresponding surfaces are investigated via first-principles calculations.
Date: October 30, 2009
Creator: Yu, Liping; Ranjan, Vivek; Buongiorno Nardelli, Marco & Bernholc, Jerry
Object Type: Article
System: The UNT Digital Library
Free Electron Laser for Gamma-Gamma Collider at a Low-Energy Option of International Linear Collider (open access)

Free Electron Laser for Gamma-Gamma Collider at a Low-Energy Option of International Linear Collider

Different scenarios of a start-up with International Linear Collider (ILC) are under discussion at the moment in the framework of the Global Design Effort (GDE). One of them assumes construction of the ILC in stages from some minimum CM energy up to final target of 500 GeV CM energy. Gamma-gamma collider with CM energy of 180GeV is considered as a candidate for the first stage of the facility. In this report we present conceptual design of a free electron laser as a source of primary photons for the first stage of ILC.
Date: October 30, 2009
Creator: Saldin, Evgeny; Schneidmiller, Evgeny; Yurkov, Mikhail & Seryi, Andrei
Object Type: Article
System: The UNT Digital Library
[Funeral Program for Robert Tippins, Jr., October 30, 2009] (open access)

[Funeral Program for Robert Tippins, Jr., October 30, 2009]

Funeral program for Brother Robert (Bat) Tippins, Jr., born April 5, 1946 and died October 22, 2009. The funeral was held October 30, 2009 at New Jerusalem Baptist Church, officiated by Pastor Jeffrey A. Garner. Funeral arrangements were made through the Carter-Taylor-Williams Mortuary, and he was buried in Fort Sam Houston National Cemetery near San Antonio, Texas.
Date: October 30, 2009
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 33, No. 209, Ed. 1 Friday, October 30, 2009 (open access)

The Greensheet (Dallas, Tex.), Vol. 33, No. 209, Ed. 1 Friday, October 30, 2009

Free weekly newspaper that includes business and classified advertising.
Date: October 30, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 33, No. 210, Ed. 1 Friday, October 30, 2009 (open access)

The Greensheet (Dallas, Tex.), Vol. 33, No. 210, Ed. 1 Friday, October 30, 2009

Free weekly newspaper that includes business and classified advertising.
Date: October 30, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 40, No. 466, Ed. 1 Friday, October 30, 2009 (open access)

The Greensheet (Houston, Tex.), Vol. 40, No. 466, Ed. 1 Friday, October 30, 2009

Free weekly newspaper that includes business and classified advertising.
Date: October 30, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 40, No. 467, Ed. 1 Friday, October 30, 2009 (open access)

The Greensheet (Houston, Tex.), Vol. 40, No. 467, Ed. 1 Friday, October 30, 2009

Free weekly newspaper that includes business and classified advertising.
Date: October 30, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 40, No. 468, Ed. 1 Friday, October 30, 2009 (open access)

The Greensheet (Houston, Tex.), Vol. 40, No. 468, Ed. 1 Friday, October 30, 2009

Free weekly newspaper that includes business and classified advertising.
Date: October 30, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The GV Tribune (Grandview, Tex.), Vol. 114, No. 43, Ed. 1 Friday, October 30, 2009 (open access)

The GV Tribune (Grandview, Tex.), Vol. 114, No. 43, Ed. 1 Friday, October 30, 2009

Weekly newspaper from Grandview, Texas that includes local, state, and national news along with advertising.
Date: October 30, 2009
Creator: Buck, Erin
Object Type: Newspaper
System: The Portal to Texas History
Household Goods Moving Industry: Progress Has Been Made in Enforcement, but Increased Focus on Consumer Protection Is Needed (open access)

Household Goods Moving Industry: Progress Has Been Made in Enforcement, but Increased Focus on Consumer Protection Is Needed

A letter report issued by the Government Accountability Office with an abstract that begins "Each year, the Federal Motor Carrier Safety Administration (FMCSA) within the Department of Transportation (DOT) receives about 3,000 consumer complaints regarding interstate moving companies: some involve egregious offenses, such as holding goods hostage. Over the years, Congress and GAO have raised concerns about the adequacy of FMCSA's oversight of the industry. As requested, GAO reviewed the (1) extent to which states have used authority in the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) to take federal enforcement action against interstate movers and challenges in using that authority; (2) extent and timeliness of FMCSA's progress in its consumer protection efforts; and (3) advantages and disadvantages of options for enhancing consumer protection in the industry. GAO analyzed applicable laws and regulations; interviewed government, moving industry, and consumer protection officials; surveyed state regulatory agencies and state attorneys general; and analyzed consumer protection models."
Date: October 30, 2009
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 53, No. 56, Ed. 1 Friday, October 30, 2009 (open access)

Hudspeth County Herald and Dell Valley Review (Dell City, Tex.), Vol. 53, No. 56, Ed. 1 Friday, October 30, 2009

Weekly newspaper from Dell City, Texas that includes local, state, and national news along with advertising.
Date: October 30, 2009
Creator: Stuart, Andrew
Object Type: Newspaper
System: The Portal to Texas History
Jordan: Background and U.S. Relations (open access)

Jordan: Background and U.S. Relations

This report provides an overview of Jordanian politics and current issues in U.S.-Jordanian relations. It provides a brief discussion of Jordan's government and economy and of its cooperation in promoting Arab-Israeli peace and other U.S. policy objectives in the Middle East.
Date: October 30, 2009
Creator: Sharp, Jeremy M.
Object Type: Report
System: The UNT Digital Library
Laser smoothing of sub-micron grooves in hydroxyl-rich fused silica (open access)

Laser smoothing of sub-micron grooves in hydroxyl-rich fused silica

Nano- to micrometer-sized surface defects on UV-grade fused silica surfaces are known to be effectively smoothed through the use of high-temperature localized CO{sub 2} laser heating, thereby enhancing optical properties. However, the details of the mass transport and the effect of hydroxyl content on the laser smoothing of defective silica at submicron length scales is still not completely understood. In this study, we examine the morphological evolution of sub-micron, dry-etched periodic surface structures on type II and type III SiO{sub 2} substrates under 10.6 {micro}m CO{sub 2} laser irradiation using atomic force microscopy (AFM). In-situ thermal imaging was used to map the transient temperature field across the heated region, allowing assessment of the T-dependent mass transport mechanisms under different laser-heating conditions. Computational fluid dynamics simulations correlated well with experimental results, and showed that for large effective capillary numbers (N{sub c} > 2), surface diffusion is negligible and smoothing is dictated by capillary action, despite the relatively small spatial scales studied here. Extracted viscosity values over 1700-2000K were higher than the predicted bulk values, but were consistent with the surface depletion of OH groups, which was confirmed using confocal Raman microscopy.
Date: October 30, 2009
Creator: Shen, N; Matthews, M J; Fair, J E; Britten, J A; Nguyen, H T; Cooke, D et al.
Object Type: Article
System: The UNT Digital Library
LCLS Undulator Commissioning, Alignment, and Performance (open access)

LCLS Undulator Commissioning, Alignment, and Performance

The LCLS x-ray FEL has recently achieved its 1.5-Angstrom lasing and saturation goals upon first trial. This was achieved as a result of a thorough pre-beam checkout, both traditional and beam-based component alignment techniques, and high electron beam brightness. The x-ray FEL process demands very tight tolerances on the straightness of the electron beam trajectory (<5 {micro}m) through the LCLS undulator system. Tight, but less stringent tolerances of {approx}100 {micro}m rms were met for the transverse placement of the individual undulator segments with respect to the beam axis. The tolerances for electron beam straightness can only be met through a beam-based alignment (BBA) method, which is implemented using large electron energy variations and sub-micron resolution cavity beam position monitors (BPM), with precise conventional alignment used to set the starting conditions. Precision-fiducialization of components mounted on remotely adjustable girders, and special beam-finder wires (BFW) at each girder have been used to meet these challenging alignment tolerances. Longer-term girder movement due to ground motion and temperature changes are being monitored, continuously, by a unique stretched wire and hydrostatic level Alignment Diagnostics System (ADS).
Date: October 30, 2009
Creator: Nuhn, Heinz-Dieter
Object Type: Article
System: The UNT Digital Library
Measurement of Branching Fractions of B decays to K1(1270)pi and K1(1400)pi and Determination of the CKM angle alpha from B0 --> a1(1260) /- pi-/ (open access)

Measurement of Branching Fractions of B decays to K1(1270)pi and K1(1400)pi and Determination of the CKM angle alpha from B0 --> a1(1260) /- pi-/

We report measurements of the branching fractions of neutral and charged B meson decays to final states containing a K{sub 1}(1270) or K{sub 1}(1400) meson and a charged pion. The data, collected with the BABAR detector at the SLAC National Accelerator Laboratory, correspond to 454 million B{bar B} pairs produced in e{sup +}e{sup -} annihilation. We measure the branching fractions {Beta}(B{sup 0} {yields} K{sub 1}(1270){sup +}{pi}{sup -} + K{sub 1}(1400){sup +}{pi}{sup -}) = 3.1{sub 0.7}{sup +0.8} x 10{sup -5} and {Beta}(B{sup +} {yields} K{sub 1}(1270){sup 0}{pi}{sup +} + K{sub 1}(1400){sup 0}{pi}{sup +}) = 2.9{sub -1.7}{sup +2.9} x 10{sup -5} (< 8.2 x 10{sup -5} at 90% confidence level), where the errors are statistical and systematic combined. The B{sup 0} decay mode is observed with a significance of 7.5{sigma}, while a significance of 3.2{sigma} is obtained for the B{sup +} decay mode. Based on these results, we estimate the weak phase {alpha} = (79 {+-} 7 {+-} 11){sup o} from the time dependent CP asymmetries in B{sup 0} {yields} a{sub 1}(1260){sup {+-}}{pi}{sup {-+}} decays.
Date: October 30, 2009
Creator: Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X. et al.
Object Type: Article
System: The UNT Digital Library
Measurements of the tau Mass and Mass Difference of the tau^+ and tau^- at BABAR (open access)

Measurements of the tau Mass and Mass Difference of the tau^+ and tau^- at BABAR

The authors present the result of a precision measurement of the mass of the {tau} lepton, M{sub {tau}}, based on 423 fb{sup -1} of data recorded at the {Upsilon}(4S) resonance with the BABAR detector. Using a pseudomass endpoint method, they determine the mass to be 1776.68 {+-} 0.12(stat) {+-} 0.41(syst) MeV. They also measure the mass difference between the {tau}{sup +} and {tau}{sup -}, and obtain (M{sub {tau}{sup +}} - M{sub {tau}{sup -}})/M{sub AVG}{sup {tau}} = (-3.4 {+-} 1.3(stat) {+-} 0.3(syst)) x 10{sup -4}, where M{sub AVG}{sup {tau}} is the average value of M{sub {tau}{sup +}} and M{sub {tau}{sup -}}.
Date: October 30, 2009
Creator: Aubert, B.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E.; Prudent, X. et al.
Object Type: Article
System: The UNT Digital Library