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Texas Register, Volume 34, Number 18, Pages 2635-2718, May 1, 2009 (open access)

Texas Register, Volume 34, Number 18, Pages 2635-2718, May 1, 2009

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: May 1, 2009
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Mexico-U.S. Relations: Issues for Congress (open access)

Mexico-U.S. Relations: Issues for Congress

This report explores the relationship between the United States and Mexico in terms of trade, drug trafficking, and cooperative disease control and management. Specifically, the report discusses the Mérida Initiative, the trade dispute involving the implementation of NAFTA trucking provisions, Secretary of State Clinton's March 2009 visit to Mexico, and the April 2009 outbreak of the H1N1 "swine flu" virus.
Date: May 1, 2009
Creator: Sullivan, Mark P. & Beittel, June S.
Object Type: Report
System: The UNT Digital Library
North Texas Daily (Denton, Tex.), Vol. 93, No. 54, Ed. 1 Friday, May 1, 2009 (open access)

North Texas Daily (Denton, Tex.), Vol. 93, No. 54, Ed. 1 Friday, May 1, 2009

Daily student newspaper from the University of North Texas in Denton, Texas that includes local, state and campus news along with advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
81st Texas Legislature, House Concurrent Resolution, House Bill 172 (open access)

81st Texas Legislature, House Concurrent Resolution, House Bill 172

Concurrent resolution introduced by the Texas House of Representatives and Senate relating to congratulating Michelle Jackson on her selection as the 2009 Cherry Blossom Princess for the State of Texas.
Date: May 1, 2009
Creator: Texas. Legislature. House of Representatives.
Object Type: Legislative Document
System: The Portal to Texas History
Dallas Voice (Dallas, Tex.), Vol. 25, No. 50, Ed. 1 Friday, May 1, 2009 (open access)

Dallas Voice (Dallas, Tex.), Vol. 25, No. 50, Ed. 1 Friday, May 1, 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: May 1, 2009
Creator: Nash, Tammye
Object Type: Newspaper
System: The UNT Digital Library
Federal Register, Volume 74, Number 83, May 1, 2009, Pages 20201-20404 (open access)

Federal Register, Volume 74, Number 83, May 1, 2009, Pages 20201-20404

Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date: May 1, 2009
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Greensheet (Houston, Tex.), Vol. 40, No. 155, Ed. 1 Friday, May 1, 2009 (open access)

Greensheet (Houston, Tex.), Vol. 40, No. 155, Ed. 1 Friday, May 1, 2009

Free weekly newspaper that includes business and classified advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 33, No. 27, Ed. 1 Friday, May 1, 2009 (open access)

The Greensheet (Dallas, Tex.), Vol. 33, No. 27, Ed. 1 Friday, May 1, 2009

Free weekly newspaper that includes business and classified advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Dallas, Tex.), Vol. 33, No. 28, Ed. 1 Friday, May 1, 2009 (open access)

Greensheet (Dallas, Tex.), Vol. 33, No. 28, Ed. 1 Friday, May 1, 2009

Free weekly newspaper that includes business and classified advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 40, No. 156, Ed. 1 Friday, May 1, 2009 (open access)

Greensheet (Houston, Tex.), Vol. 40, No. 156, Ed. 1 Friday, May 1, 2009

Free weekly newspaper that includes business and classified advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 40, No. 154, Ed. 1 Friday, May 1, 2009 (open access)

Greensheet (Houston, Tex.), Vol. 40, No. 154, Ed. 1 Friday, May 1, 2009

Free weekly newspaper that includes business and classified advertising.
Date: May 1, 2009
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 141, Ed. 1 Friday, May 1, 2009 (open access)

Sweetwater Reporter (Sweetwater, Tex.), Vol. 111, No. 141, Ed. 1 Friday, May 1, 2009

Daily newspaper from Sweetwater, Texas that includes local, state, and national news along with advertising.
Date: May 1, 2009
Creator: Rodriguez, Tatiana
Object Type: Newspaper
System: The Portal to Texas History
Taiwan-U.S. Relations: Developments and Policy Implications (open access)

Taiwan-U.S. Relations: Developments and Policy Implications

This report focuses on current developments in Taiwan, analyzing how those developments are affecting choices the United States makes about its policy toward Taiwan specifically and toward the People's Republic of China (PRC) more broadly.
Date: May 1, 2009
Creator: Dumbaugh, Kerry
Object Type: Report
System: The UNT Digital Library
U.S. Foreign Aid to the Palestinians (open access)

U.S. Foreign Aid to the Palestinians

None
Date: May 1, 2009
Creator: unknown
Object Type: Report
System: The UNT Digital Library
The Iran Sanctions Act (ISA) (open access)

The Iran Sanctions Act (ISA)

None
Date: May 1, 2009
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Pion Cloud and the Sea of the Nucleon (open access)

Pion Cloud and the Sea of the Nucleon

I review recent progress in understanding the structure of the nucleon sea and the role of the nucleon's pion cloud. In particular, I discuss the consequences of the pion cloud for the d-bar - u-bar asymmetry in the proton, the neutron's electric form factor, and the proton's electric to magnetic form factor ratio.
Date: May 1, 2009
Creator: Melnitchouk, Wally
Object Type: Article
System: The UNT Digital Library
Ultrafast X-Ray Coherent Control (open access)

Ultrafast X-Ray Coherent Control

This main purpose of this grant was to develop the nascent #12;eld of ultrafast x-ray science using accelerator-based sources, and originally developed from an idea that a laser could modulate the di#11;racting properties of a x-ray di#11;racting crystal on a fast enough time scale to switch out in time a shorter slice from the already short x-ray pulses from a synchrotron. The research was carried out primarily at the Advanced Photon Source (APS) sector 7 at Argonne National Laboratory and the Sub-Picosecond Pulse Source (SPPS) at SLAC; in anticipation of the Linac Coherent Light Source (LCLS) x-ray free electron laser that became operational in 2009 at SLAC (all National User Facilities operated by BES). The research centered on the generation, control and measurement of atomic-scale dynamics in atomic, molecular optical and condensed matter systems with temporal and spatial resolution . It helped develop the ultrafast physics, techniques and scienti#12;c case for using the unprecedented characteristics of the LCLS. The project has been very successful with results have been disseminated widely and in top journals, have been well cited in the #12;eld, and have laid the foundation for many experiments being performed on the LCLS, the world's #12;rst hard x-ray free …
Date: May 1, 2009
Creator: Reis, David
Object Type: Report
System: The UNT Digital Library
Relativistic Stern-Gerlach Interaction in an RF Cavity (open access)

Relativistic Stern-Gerlach Interaction in an RF Cavity

N/A
Date: May 1, 2009
Creator: M., Conte; Luccio, A. U. & Pusterla, M.
Object Type: Report
System: The UNT Digital Library
Sulfur Iodine Process Summary for the Hydrogen Technology Down-Selection (open access)

Sulfur Iodine Process Summary for the Hydrogen Technology Down-Selection

This report summarizes the sulfur-iodine (SI) thermochemical water splitting process for the purpose of supporting the process for evaluating and recommending a hydrogen production technology to deploy with the Next Generation Nuclear Plant (NGNP). This package provides the baseline process description as well as a comparison with the process as it was implemented in the Integrated Lab Scale (ILS) experiment conducted at General Atomics from 2006-2009.
Date: May 1, 2009
Creator: Russ, Benjamin
Object Type: Report
System: The UNT Digital Library
Benchmarking Multipacting Simulations in VORPAL (open access)

Benchmarking Multipacting Simulations in VORPAL

We will present the results of benchmarking simulations run to test the ability of VORPAL to model multipacting processes in Superconducting Radio Frequency structures. VORPAL is an electromagnetic (FDTD) particle-in-cell simulation code originally developed for applications in plasma and beam physics. The addition of conformal boundaries and algorithms for secondary electron emission allow VORPAL to be applied to multipacting processes. We start with simulations of multipacting between parallel plates where there are well understood theoretical predictions for the frequency bands where multipacting is expected to occur. We reproduce the predicted multipacting bands and demonstrate departures from the theoretical predictions when a more sophisticated model of secondary emission is used. Simulations of existing cavity structures developed at Jefferson National Laboratories will also be presented where we compare results from VORPAL to experimental data.
Date: May 1, 2009
Creator: C. Nieter, C. Roark, P. Stoltz, K. Tian
Object Type: Article
System: The UNT Digital Library
Application of Goubau Surface Wave Transmission Line for Improved Bench Testing of Diagnostic Beamline Elements (open access)

Application of Goubau Surface Wave Transmission Line for Improved Bench Testing of Diagnostic Beamline Elements

In-air test fixtures for beamline elements typically utilize an X-Y positioning stage, and a wire antenna excited by an RF source. In most cases, the antenna contains a standing wave, and is useful only for coarse alignment measurements in CW mode. A surface-wave (SW) based transmission line permits RF energy to be launched on the wire, travel through the beamline component, and then be absorbed in a load. Since SW transmission lines employ travelling waves, the RF energy can be made to resemble the electron beam, limited only by ohmic losses and dispersion. Although lossy coaxial systems are also a consideration, the diameter of the coax introduces large uncertainties in centroid location. A SW wire is easily constructed out of 200 micron magnet wire, which more accurately approximates the physical profile of the electron beam. Benefits of this test fixture include accurate field mapping, absolute calibration for given beam currents, Z-axis independence, and temporal response measurements of sub-nanosecond pulse structures. Descriptions of the surface wave launching technique, transmission line, and instrumentation are presented, along with measurement data.
Date: May 1, 2009
Creator: John Musson, Keith Cole, Sheldon Rubin
Object Type: Article
System: The UNT Digital Library
Subtask 2.2 - Creating A Numerical Technique for Microseismic Data Inversion (open access)

Subtask 2.2 - Creating A Numerical Technique for Microseismic Data Inversion

Geomechanical and geophysical monitoring are the techniques which can complement each other and provide enhancement in the solutions of many problems of geotechnical engineering. One of the most promising geophysical techniques is passive seismic monitoring. The essence of the technique is recording the acoustic signals produced in the subsurface, either naturally or in response to human activity. The acoustic signals are produced by mechanical displacements on the contacts of structural elements (e.g., faults, boundaries of rock blocks, natural and induced fractures). The process can be modeled by modern numerical techniques developed in geomechanics. The report discusses a study that was aimed at the unification of the passive seismic monitoring and numerical modeling for the monitoring of the hydraulic fracture propagation. The approach adopted in the study consisted of numerical modeling of the seismicity accompanying hydraulic fracture propagation and defining seismic attributes and patterns characterizing the process and fracture parameters. Numerical experiments indicated that the spatial distribution of seismic events is correlated to geometrical parameters of hydrofracture. Namely, the highest density of the events is observed along fracture contour, and projection of the events to the fracture plane makes this effect most pronounced. The numerical experiments also showed that dividing the …
Date: May 1, 2009
Creator: Dobroskok, Anastasia; Holubnyak, Yevhen & Sorensen, James
Object Type: Report
System: The UNT Digital Library
Improved DC Gun Insulator (open access)

Improved DC Gun Insulator

Many user facilities such as synchrotron light sources and free electron lasers require accelerating structures that support electric fields of 10-100 MV/m, especially at the start of the accelerator chain where ceramic insulators are used for very high gradient DC guns. These insulators are difficult to manufacture, require long commissioning times, and have poor reliability, in part because energetic electrons bury themselves in the ceramic, creating a buildup of charge and causing eventual puncture. A novel ceramic manufacturing process is proposed. It will incorporate bulk resistivity in the region where it is needed to bleed off accumulated charge caused by highly energetic electrons. This process will be optimized to provide an appropriate gradient in bulk resistivity from the vacuum side to the air side of the HV standoff ceramic cylinder. A computer model will be used to determine the optimum cylinder dimensions and required resistivity gradient for an example RF gun application. A ceramic material example with resistivity gradient appropriate for use as a DC gun insulator will be fabricated by glazing using doping compounds and tested.
Date: May 1, 2009
Creator: M.L. Neubauer, K.B. Beard, R. Sah, C. Hernandez-Garcia, G. Neil
Object Type: Article
System: The UNT Digital Library
SRF Cavity High-Gradient Study at 805 MHz for Proton and Other Applications (open access)

SRF Cavity High-Gradient Study at 805 MHz for Proton and Other Applications

805 MHz elliptical SRF cavities have been used for SNS as the first application for protons. At LANL, an R&D started to explore a capability of getting high-gradient cavities (40-50 MV/m) at this frequency for the future applications such as proton and muon based interrogation testing facility added to the LANSCE accelerator and a power upgrade of the LANSCE accelerator for the fission and fusion material test station. Optimized cell designs for “standard”, “low-loss” and “re-entrant” shapes, cavity test results for “standard” single-cell cavities with temperature mapping as well as surface inspection results will be presented.
Date: May 1, 2009
Creator: Tajima, T; Chacon, P; Edwards, R L; Eremeev, G V; Krawczyk, F L; Roybal, R J et al.
Object Type: Article
System: The UNT Digital Library