PRECEDENTS FOR AUTHORIZATION OF CONTENTS USING DOSE RATE MEASUREMENTS (open access)

PRECEDENTS FOR AUTHORIZATION OF CONTENTS USING DOSE RATE MEASUREMENTS

For the transportation of Radioactive Material (RAM) packages, the requirements for the maximum allowed dose rate at the package surface and in its vicinity are given in Title 10 of the Code of Federal Regulations, Section 71.47. The regulations are based on the acceptable dose rates to which the public, workers, and the environment may be exposed. As such, the regulations specify dose rates, rather than quantity of radioactive isotopes and require monitoring to confirm the requirements are met. 10CFR71.47 requires that each package of radioactive materials offered for transportation must be designed and prepared for shipment so that under conditions normally incident to transportation the radiation level does not exceed 2 mSv/h (200 mrem/h) at any point on the external Surface of the package, and the transport index does not exceed 10. Before shipment, the dose rate of the package is determined by measurement, ensuring that it conforms to the regulatory limits, regardless of any analyses. This is the requirement for all certified packagings. This paper discusses the requirements for establishing the dose rates when shipping RAM packages and the precedents for meeting these requirements by measurement.
Date: June 5, 2012
Creator: Abramczyk, G.; Bellamy, S.; Nathan, S. & Loftin, B.
Object Type: Article
System: The UNT Digital Library
Discovery of Very High Energy Gamma Rays from PKS 1424+240 and Multiwavelength Constraints on its Redshift (open access)

Discovery of Very High Energy Gamma Rays from PKS 1424+240 and Multiwavelength Constraints on its Redshift

We report the first detection of very-high-energy (VHE) gamma-ray emission above 140GeV from PKS 1424+240, a BL Lac object with an unknown redshift. The photon spectrum above 140GeV measured by VERITAS is well described by a power law with a photon index of 3.8 {+-}0.5{sub stat} {+-} 0.3{sub syst} and a flux normalization at 200 GeV of (5.1 {+-} 0.9{sub stat} {+-} 0.5{sub syst}) x 10{sup -11} TeV{sup -1} cm{sup -2} s{sup -1}, where stat and syst denote the statistical and systematical uncertainty, respectively. The VHE flux is steady over the observation period between MJD 54881 and 55003 (2009 February 19 to June 21). Flux variability is also not observed in contemporaneous high energy observations with the Fermi Large Area Telescope (LAT). Contemporaneous X-ray and optical data were also obtained from the Swift XRT and MDM observatory, respectively. The broadband spectral energy distribution (SED) is well described by a one-zone synchrotron self-Compton (SSC) model favoring a redshift of less than 0.1. Using the photon index measured with Fermi in combination with recent extragalactic background light (EBL) absorption models it can be concluded from the VERITAS data that the redshift of PKS 1424+240 is less than 0.66.
Date: April 5, 2012
Creator: Acciari, V. A.; Aliu, E.; Arlen, T.; Aune, T.; Bautista, M.; Beilicke, M. et al.
Object Type: Report
System: The UNT Digital Library
Improving Conservation for First-Order System Least Squares Finite-Element Methods (open access)

Improving Conservation for First-Order System Least Squares Finite-Element Methods

None
Date: September 5, 2012
Creator: Adler, J H & Vassilevski, P S
Object Type: Article
System: The UNT Digital Library
Design of An 18 MW Beam Dump for 500 GeV Electron/Positron Beams at An ILC (open access)

Design of An 18 MW Beam Dump for 500 GeV Electron/Positron Beams at An ILC

This article presents a report on the progress made in designing 18 MW water based Beam Dumps for electrons or positrons for an International Linear Collider (ILC). Multi-dimensional technology issues have to be addressed for the successful design of the Beam Dump. They include calculations of power deposition by the high energy electron/positron beam bunch trains, computational fluid dynamic analysis of turbulent water flow, mechanical design, process flow analysis, hydrogen/oxygen recombiners, handling of radioactive 7Be and 3H, design of auxiliary equipment, provisions for accident scenarios, remote window exchanger, radiation shielding, etc. The progress made to date is summarized, the current status, and also the issues still to be addressed.
Date: July 5, 2012
Creator: Amann, John; /SLAC; Arnold, Ray; /SLAC; Seryi, Andrei; /SLAC et al.
Object Type: Article
System: The UNT Digital Library
The European Union: Questions and Answers (open access)

The European Union: Questions and Answers

This report provides a brief overview of the European Union (EU), an economic and political partnership between 27 sovereign member states. The report describes the formation of the EU, the three main institutions of the EU, and the EU's relationship with the United States.
Date: April 5, 2012
Creator: Archick, Kristin
Object Type: Report
System: The UNT Digital Library
Western Sahara (open access)

Western Sahara

This report discusses how Morocco and the independence-seeking Popular Front for the Liberation of Saqiat al Hamra and Rio de Oro (Polisario) have been vying for control of the Western Sahara, a former Spanish territory, since the 1970s. The report discusses recent settlement attempts, as well as how the Western Sahara issue has affected Algerian-Moroccan bilaterial relations, Moroccan relations with the African Union, and regional cooperation on economic and security issues. The report also discusses the United States' involvement in and stance on the issue.
Date: April 5, 2012
Creator: Arieff, Alexis
Object Type: Report
System: The UNT Digital Library
DDT of Aluminum/Air Mixtures in a Tunnel (open access)

DDT of Aluminum/Air Mixtures in a Tunnel

None
Date: January 5, 2012
Creator: Balakrishnan, K; Kuhl, A L & Bell, J B
Object Type: Article
System: The UNT Digital Library
Pacific Northwest National Laboratory Potential Impact Categories for Radiological Air Emission Monitoring (open access)

Pacific Northwest National Laboratory Potential Impact Categories for Radiological Air Emission Monitoring

In 2002, the EPA amended 40 CFR 61 Subpart H and 40 CFR 61 Appendix B Method 114 to include requirements from ANSI/HPS N13.1-1999 Sampling and Monitoring Releases of Airborne Radioactive Substances from the Stack and Ducts of Nuclear Facilities for major emission points. Additionally, the WDOH amended the Washington Administrative Code (WAC) 246-247 Radiation protection-air emissions to include ANSI/HPS N13.1-1999 requirements for major and minor emission points when new permitting actions are approved. A result of the amended regulations is the requirement to prepare a written technical basis for the radiological air emission sampling and monitoring program. A key component of the technical basis is the Potential Impact Category (PIC) assigned to an emission point. This paper discusses the PIC assignments for the Pacific Northwest National Laboratory (PNNL) Integrated Laboratory emission units; this revision includes five PIC categories.
Date: June 5, 2012
Creator: Ballinger, Marcel Y.; Gervais, Todd L. & Barnett, J. M.
Object Type: Report
System: The UNT Digital Library
Re-architecting TEIMS Web-based Legacy Applications Using the Model View Controller Paradigm (open access)

Re-architecting TEIMS Web-based Legacy Applications Using the Model View Controller Paradigm

None
Date: September 5, 2012
Creator: Barbosa, E & Laguna, G W
Object Type: Article
System: The UNT Digital Library
High Cost/High Risk Components to Chalcogenide Molded Lens Model: Molding Preforms and Mold Technology (open access)

High Cost/High Risk Components to Chalcogenide Molded Lens Model: Molding Preforms and Mold Technology

This brief report contains a critique of two key components of FiveFocal's cost model for glass compression molding of chalcogenide lenses for infrared applications. Molding preforms and mold technology have the greatest influence on the ultimate cost of the product and help determine the volumes needed to select glass molding over conventional single-point diamond turning or grinding and polishing. This brief report highlights key areas of both technologies with recommendations for further study.
Date: October 5, 2012
Creator: Bernacki, Bruce E.
Object Type: Report
System: The UNT Digital Library
Scalable Critical-Path Based Performance Analysis (open access)

Scalable Critical-Path Based Performance Analysis

None
Date: January 5, 2012
Creator: Boehme, D; Geimer, M; de Supinski, B; Schulz, M & Wolf, F
Object Type: Article
System: The UNT Digital Library
U.S. Foreign-Trade Zones: Background and Issues for Congress (open access)

U.S. Foreign-Trade Zones: Background and Issues for Congress

Report that provides a general perspective on the U.S. Foreign-Trade Zone (FTZ) system. The first section discusses free trade zones worldwide. The second section focuses on the U.S. FTZ program --its history, administrative mechanism, structure, growth and industry concentration, and benefits and costs. The third section focuses on current issues for Congress relating to the U.S. FTZ program.
Date: September 5, 2012
Creator: Bolle, Mary Jane & Williams, Brock R.
Object Type: Report
System: The UNT Digital Library
The Injection System of the INFN-SuperB Factory Project: Preliminary Design (open access)

The Injection System of the INFN-SuperB Factory Project: Preliminary Design

The ultra high luminosity B-factory (SuperB) project of INFN requires a high performance and reliable injection system, providing electrons at 4 GeV and positrons at 7 GeV, to fulfil the very tight requirements of the collider. Due to the short beam lifetime, continuous injection of electron and positron bunches in both LER and HER rings is necessary to maintain an high average luminosity. Polarized electrons are required for experiments and must be delivered by the injection system, due to the beam lifetime shorter than the ring polarization build-up: they will be produced by means of a SLAC-SLC polarized gun. The emittance and the energy spread of the e{sup -}/e{sup +} beams are reduced in a 1 GeV Damping Ring (DR) before injection in the main rings. Two schemes for positron production are under study, one with e{sup -}/e{sup +} conversion at low energy (< 1 Gev) and one with conversion at 6 GeV and a recirculation line to bring the positrons back to the DR. Acceleration through the Linac is provided by a 2856 MHz RF system made of travelling wave (TW), room temperature accelerating structures.
Date: July 5, 2012
Creator: Boni, Roberto; Guiducci, Susanna; Preger, Miro; Raimondi, Pantaleo; Chance, Antoine; Dadoun, Olivier et al.
Object Type: Article
System: The UNT Digital Library
Wildfires: CRS Experts (open access)

Wildfires: CRS Experts

The following table provides access to names and contact information for CRS experts on policy concerns relating to wildfires. Policy areas identified include federal wildfire policy; long-term land use management; federal firefighting assistance; federal emergency management policy; federal preparedness system and response plan; hazard mitigation; armed forces and national guard assistance; supplemental disaster funding; and disaster insurance.
Date: July 5, 2012
Creator: Bracmort, Kelsi
Object Type: Report
System: The UNT Digital Library
Radar-cross-section reduction of wind turbines. part 1. (open access)

Radar-cross-section reduction of wind turbines. part 1.

In recent years, increasing deployment of large wind-turbine farms has become an issue of growing concern for the radar community. The large radar cross section (RCS) presented by wind turbines interferes with radar operation, and the Doppler shift caused by blade rotation causes problems identifying and tracking moving targets. Each new wind-turbine farm installation must be carefully evaluated for potential disruption of radar operation for air defense, air traffic control, weather sensing, and other applications. Several approaches currently exist to minimize conflict between wind-turbine farms and radar installations, including procedural adjustments, radar upgrades, and proper choice of low-impact wind-farm sites, but each has problems with limited effectiveness or prohibitive cost. An alternative approach, heretofore not technically feasible, is to reduce the RCS of wind turbines to the extent that they can be installed near existing radar installations. This report summarizes efforts to reduce wind-turbine RCS, with a particular emphasis on the blades. The report begins with a survey of the wind-turbine RCS-reduction literature to establish a baseline for comparison. The following topics are then addressed: electromagnetic model development and validation, novel material development, integration into wind-turbine fabrication processes, integrated-absorber design, and wind-turbine RCS modeling. Related topics of interest, including alternative …
Date: March 5, 2012
Creator: Brock, Billy C.; Loui, Hung; McDonald, Jacob J.; Paquette, Joshua A.; Calkins, David A.; Miller, William K. et al.
Object Type: Report
System: The UNT Digital Library
Legal Analysis of Religious Exemptions for Photo Identification Requirements (open access)

Legal Analysis of Religious Exemptions for Photo Identification Requirements

Report that analyzes the legal issues associated with religious exemptions to photo identification laws, lawsuits that have challenged state photo requirements, and factors that may be relevant in future decisions that may arise related to federal photo identification requirements and state voter identification requirements.
Date: September 5, 2012
Creator: Brougher, Cynthia
Object Type: Report
System: The UNT Digital Library
The Endangered Species Act (ESA) in the 112th Congress: Conflicting Values and Difficult Choices (open access)

The Endangered Species Act (ESA) in the 112th Congress: Conflicting Values and Difficult Choices

The Endangered Species Act has been one of the more contentious environmental laws. This may stem from its strict substantive provisions, which can affect the use of both federal and nonfederal lands and resources. This report discusses oversight issues and legislation introduced in the 112th Congress to address Endangered Species Act implementation and management of endangered and threatened species.
Date: November 5, 2012
Creator: Buck, Eugene H.; Corn, M. Lynne; Alexander, Kristina; Sheikh, Pervaze A. & Meltz, Robert
Object Type: Report
System: The UNT Digital Library
Characterization of fundamental catalytic properties of MoS2/WS2 nanotubes and nanoclusters for desulfurization catalysis - a surface temperature study (open access)

Characterization of fundamental catalytic properties of MoS2/WS2 nanotubes and nanoclusters for desulfurization catalysis - a surface temperature study

The prior project consisted of two main project lines. First, characterization of novel nanomaterials for hydrodesulfurization (HDS) applications. Second, studying more traditional model systems for HDS such as vapor-deposited silica-supported Mo and MoSx clusters. In the first subproject, we studied WS2 and MoS2 fullerene-like nanoparticles as well as WS2 nanotubes. Thiophene (C4H4S) was used as the probe molecule. Interestingly, metallic and sulfur-like adsorption sites could be identified on the silica-supported fullerene-particles system. Similar structures are seen for the traditional system (vapor-deposited clusters). Thus, this may be a kinetics fingerprint feature of modern HDS model systems. In addition, kinetics data allowed characterization of the different adsorption sites for thiophene on and inside WS2 nanotube bundles. The latter is a unique feature of nanotubes that has not been reported before for any inorganic nanotube system; however, examples are known for carbon nanotubes, including prior work of the PI. Although HDS has been studied for decades, utilizing nanotubes as nanosized HDS reactors has never been tried before, as far as we know. This is of interest from a fundamental perspective. Unfortunately, the HDS activity of the nanocatalysts at ultra-high vacuum (UHV) conditions was close to the detection limit of our techniques. Therefore, we …
Date: July 5, 2012
Creator: Burghaus, U.
Object Type: Report
System: The UNT Digital Library
The Repeal of "Don't Ask, Don't Tell": Issues for Congress (open access)

The Repeal of "Don't Ask, Don't Tell": Issues for Congress

On December 22, 2010, President Obama signed into law legislation calling for the repeal of the existing law barring open homosexuality in the military by prescribing a series of steps that must take place before repeal occurs. One step was fulfilled on July 22, 2011, when the President signed the certification of the process ending the Don't Ask, Don't Tell policy, which was repealed on September 20, 2011. This report considers issues that Congress may wish to consider as the repeal process proceeds.
Date: April 5, 2012
Creator: Burrelli, David F.
Object Type: Report
System: The UNT Digital Library
Women in Combat: Issues for Congress (open access)

Women in Combat: Issues for Congress

This report looks at the history of women in US military roles and combat since the 1990's. It also discusses critic's views of exclusionary policy as a civil rights issue.
Date: April 5, 2012
Creator: Burrelli, David F.
Object Type: Report
System: The UNT Digital Library
FY2012 National Defense Authorization Act: Selected Military Personnel Policy Issues (open access)

FY2012 National Defense Authorization Act: Selected Military Personnel Policy Issues

This report focuses exclusively on the annual defense authorization process. It does not include language concerning appropriations, veterans' affairs, tax implications of policy choices, or any discussion of separately introduced legislation.
Date: January 5, 2012
Creator: Burrelli, David F.; Henning, Charles A.; Jansen, Don J. & Kapp, Lawrence
Object Type: Report
System: The UNT Digital Library
Fusion Simulation Program Definition. Final report (open access)

Fusion Simulation Program Definition. Final report

We have completed our contributions to the Fusion Simulation Program Definition Project. Our contributions were in the overall planning with concentration in the definition of the area of Software Integration and Support. We contributed to the planning of multiple meetings, and we contributed to multiple planning documents.
Date: September 5, 2012
Creator: Cary, John R.
Object Type: Report
System: The UNT Digital Library
COLLABORATIVE: FUSION SIMULATION PROGRAM (open access)

COLLABORATIVE: FUSION SIMULATION PROGRAM

New York University, Courant Institute of Mathematical Sciences, participated in the “Fusion Simulation Program (FSP) Planning Activities” [http://www.pppl.gov/fsp], with C.S. Chang as the institutional PI. FSP’s mission was to enable scientific discovery of important new plasma phenomena with associated understanding that emerges only upon integration. This requires developing a predictive integrated simulation capability for magnetically-confined fusion plasmas that are properly validated against experiments in regimes relevant for producing practical fusion energy. Specific institutional goal of the New York University was to participate in the planning of the edge integrated simulation, with emphasis on the usage of large scale HPCs, in connection with the SciDAC CPES project which the PI was leading. New York University successfully completed its mission by participating in the various planning activities, including the edge physics integration, the edge science drivers, and the mathematical verification. The activity resulted in the combined report that can be found in http://www.pppl.gov/fsp/Overview.html. Participation and presentations as part of this project are listed in a separation file.
Date: June 5, 2012
Creator: Chang, Choong Seock
Object Type: Report
System: The UNT Digital Library
Thailand: Background and U.S. Relations (open access)

Thailand: Background and U.S. Relations

This report looks at the relationship between the U.S. and Thailand, in particular, recent rivalries between populist political forces, neopotism in government, and Thai relationships with neighboring countries.
Date: June 5, 2012
Creator: Chanlett-Avery, Emma & Dolven, Ben
Object Type: Report
System: The UNT Digital Library