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Activation of Air and Utilities in the National Ignition Facility (open access)

Activation of Air and Utilities in the National Ignition Facility

Detailed 3-D modeling of the NIF facility is developed to accurately simulate the radiation environment within the NIF. Neutrons streaming outside the NIF Target Chamber will activate the air present inside the Target Bay and the Ar gas inside the laser tubes. Smaller levels of activity are also generated in the Switchyard air and in the Ar portion of the SY laser beam path. The impact of neutron activation of utilities located inside the Target Bay is analyzed for variety of shot types. The impact of activating TB utilities on dose received by maintenance personnel post-shot is analyzed. The current NIF facility model includes all important features of the Target Chamber, shielding system, and building configuration. Flow of activated air from the Target Bay is controlled by the HVAC system. The amount of activated Target Bay air released through the stack is very small and does not pose significant hazard to personnel or the environment. Activation of Switchyard air is negligible. Activation of Target Bay utilities result in a manageable dose rate environment post high yield (20 MJ) shots. The levels of activation generated in air and utilities during D-D and THD shots are small and do not impact work …
Date: April 8, 2010
Creator: Khater, H; Pohl, B & Brererton, S
Object Type: Article
System: The UNT Digital Library
Agricultural Biotechnology: The U.S.-EU Dispute (open access)

Agricultural Biotechnology: The U.S.-EU Dispute

This report focuses on a conflict between the European Union (EU) and the United States, Canada, and Argentina. The United States suggests that the European Union's moratorium costs the U.S. 300 million dollars in exports to the EU annually. Moreover, the report highlights other concerns the U.S. has with the EU's biotechnology policies.
Date: April 8, 2010
Creator: Hanrahan, Charles E.
Object Type: Report
System: The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 134, No. 46, Ed. 1 Thursday, April 8, 2010 (open access)

The Albany News (Albany, Tex.), Vol. 134, No. 46, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date: April 8, 2010
Creator: Lucas, Melinda L.
Object Type: Newspaper
System: The Portal to Texas History
All-Terrain Vehicles: How They Are Used, Crashes, and Sales of Adult-Sized Vehicles for Children's Use (open access)

All-Terrain Vehicles: How They Are Used, Crashes, and Sales of Adult-Sized Vehicles for Children's Use

A letter report issued by the Government Accountability Office with an abstract that begins "All-terrain vehicles (ATV), which are off-road motorized vehicles, usually with four tires, a straddle seat for the operator, and handlebars for steering control, have become increasingly popular. However, ATV fatalities and injuries have increased over the last decade and are a matter of concern to the Consumer Product Safety Commission (Commission), which oversees ATV safety, and to others. Many ATV crashes involving children occur when they are riding adult-sized ATVs. Manufacturers and distributors have agreed to use their best efforts to prevent their dealers from selling adult-sized ATVs for use by children under the age of 16. The Consumer Product Safety Improvement Act requires GAO to report on (1) how ATVs are used and the advantages of their use and (2) the nature, extent, and costs of ATV crashes. GAO addressed these topics by reviewing ATV use and crash data and by discussing these issues with Commission staff, industry officials, user groups, and safety stakeholders."
Date: April 8, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Alternative Neutron Detection Testing Summary (open access)

Alternative Neutron Detection Testing Summary

Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. The main reason for having neutron detection capability is to detect fission neutrons from plutonium. Most currently deployed radiation portal monitors (RPMs) use neutron detectors based upon 3He-filled gas proportional counters, which are the most common large area neutron detector. This type of neutron detector is used in the TSA and other RPMs installed in international locations and in the Ludlum and Science Applications International Corporation RPMs deployed primarily for domestic applications. There is a declining supply of 3He in the world and, thus, methods to reduce the use of this gas in RPMs with minimal changes to the current system designs and sensitivity to cargo-borne neutrons are being investigated. Four technologies have been identified as being currently commercially available, potential alternative neutron detectors to replace the use of 3He in RPMs. These technologies are: 1) Boron trifluoride-filled proportional counters, 2) Boron-lined proportional counters, 3) Lithium-loaded glass fibers, and 4) Coated wavelength-shifting plastic fibers. Reported here is a summary of the testing carried out at Pacific Northwest National Laboratory on these technologies to date, as well as measurements on 3He tubes at various …
Date: April 8, 2010
Creator: Kouzes, Richard T.; Ely, James H.; Erikson, Luke E.; Kernan, Warnick J.; Lintereur, Azaree T.; Siciliano, Edward R. et al.
Object Type: Report
System: The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 88, Ed. 1 Thursday, April 8, 2010 (open access)

The Altus Times (Altus, Okla.), Vol. 112, No. 88, Ed. 1 Thursday, April 8, 2010

Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Bush, Michael
Object Type: Newspaper
System: The Gateway to Oklahoma History
American Samoa and Commonwealth of the Northern Mariana Islands: Wages, Employment, Employer Actions, Earnings, and Worker Views Since Minimum Wage Increases Began (open access)

American Samoa and Commonwealth of the Northern Mariana Islands: Wages, Employment, Employer Actions, Earnings, and Worker Views Since Minimum Wage Increases Began

A letter report issued by the Government Accountability Office with an abstract that begins "In 2007, the United States enacted a law incrementally raising the minimum wages in American Samoa and the Commonwealth of the Northern Mariana Islands (CNMI). The law applied the first $.50 per hour increase in July 2007 and mandated additional increases in each subsequent year until the minimum wages reach the level of the U.S. minimum wage--currently $7.25 per hour. American Samoa's lowest paid will reach that wage in 2016, and the CNMI in 2015. In American Samoa, one of two tuna canneries employing almost a third of workers closed in September 2009. In the CNMI, where the garment industry was one of two major employers, the last garment factory closed in early 2009. The American Recovery and Reinvestment Act requires GAO to report annually on the impact of the minimum wage increases in American Samoa and the CNMI. In this report GAO describes, since the increases began, wages, employment, employer actions, inflation-adjusted earnings, and worker views. GAO reviewed existing information from federal and local sources. GAO also collected data from large employers (at least 50 employees) through a questionnaire and from small employers and workers …
Date: April 8, 2010
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Archer County News (Archer City, Tex.), No. 14, Ed. 1 Thursday, April 8, 2010 (open access)

Archer County News (Archer City, Tex.), No. 14, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Lewis, Shelley
Object Type: Newspaper
System: The Portal to Texas History
Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report January 1–March 31, 2010 (open access)

Atmospheric Radiation Measurement Program Climate Research Facility Operations Quarterly Report January 1–March 31, 2010

The U.S. Department of Energy (DOE) requires national user facilities to report time-based operating data. The requirements concern the actual hours of operation (ACTUAL); the estimated maximum operation or uptime goal (OPSMAX), which accounts for planned downtime; and the VARIANCE [1 – (ACTUAL/OPSMAX)], which accounts for unplanned downtime.
Date: April 8, 2010
Creator: Sisterson, D. L.
Object Type: Report
System: The UNT Digital Library
Authorized Limits for the Release of a 25 Ton Locomotive, Serial Number 21547, at the Area 25 Engine Maintenance, Assembly, and Disassembly Facility, Nevada Test Site, Nevada (open access)

Authorized Limits for the Release of a 25 Ton Locomotive, Serial Number 21547, at the Area 25 Engine Maintenance, Assembly, and Disassembly Facility, Nevada Test Site, Nevada

This document contains process knowledge and radiological data and analysis to support approval for release of the 25-ton locomotive, Serial Number 21547, at the Area 25 Engine Maintenance, Assembly, and Disassembly (EMAD) Facility, located on the Nevada Test Site (NTS). The 25-ton locomotive is a small, one-of-a-kind locomotive used to move railcars in support of the Nuclear Engine for Rocket Vehicle Application project. This locomotive was identified as having significant historical value by the Nevada State Railroad Museum in Boulder City, Nevada, where it will be used as a display piece. A substantial effort to characterize the radiological conditions of the locomotive was undertaken by the NTS Management and Operations Contractor, National Security Technologies, LLC (NSTec). During this characterization process, seven small areas on the locomotive had contamination levels that exceeded the NTS release criteria (limits consistent with U.S. Department of Energy [DOE] Order DOE O 5400.5, “Radiation Protection of the Public and the Environment”). The decision was made to perform radiological decontamination of these known accessible impacted areas to further the release process. On February 9, 2010, NSTec personnel completed decontamination of these seven areas to within the NTS release criteria. Although all accessible areas of the locomotive had …
Date: April 8, 2010
Creator: Frenette, Jeremy Gwin and Douglas
Object Type: Report
System: The UNT Digital Library
The Bastrop Advertiser (Bastrop, Tex.), Vol. 157, No. 11, Ed. 1 Thursday, April 8, 2010 (open access)

The Bastrop Advertiser (Bastrop, Tex.), Vol. 157, No. 11, Ed. 1 Thursday, April 8, 2010

Semi-weekly newspaper from Bastrop, Texas that includes local, state and national news along with advertising.
Date: April 8, 2010
Creator: Wright, Cyndi
Object Type: Newspaper
System: The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 70, Ed. 1 Thursday, April 8, 2010 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 90, No. 70, Ed. 1 Thursday, April 8, 2010

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Halter, Janie
Object Type: Newspaper
System: The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 120, No. 14, Ed. 1 Thursday, April 8, 2010 (open access)

The Canadian Record (Canadian, Tex.), Vol. 120, No. 14, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Canadian, Texas that includes local, state and national news along with some advertising.
Date: April 8, 2010
Creator: Brown, Laurie Ezzell
Object Type: Newspaper
System: The Portal to Texas History
Comanche Chief (Comanche, Tex.), No. 50, Ed. 1 Thursday, April 8, 2010 (open access)

Comanche Chief (Comanche, Tex.), No. 50, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Comanche, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Wilkerson, James C., III
Object Type: Newspaper
System: The Portal to Texas History
Cooper Review (Cooper, Tex.), Vol. 130, No. 14, Ed. 1 Thursday, April 8, 2010 (open access)

Cooper Review (Cooper, Tex.), Vol. 130, No. 14, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Cooper, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Palmer, Roger
Object Type: Newspaper
System: The Portal to Texas History
Dispute Settlement in the World Trade Organization (WTO): An Overview (open access)

Dispute Settlement in the World Trade Organization (WTO): An Overview

This report describes the Understanding on Rules and Procedures Governing the Settlement of Disputes (DSU), which is the World Trade Organization's (WTO) means of resolving disputes arising under WTO agreements. The report includes criticisms of certain flaws in the DSU, as well as WTO Members' suggestions for improvement. The report also describes the Office of the United States Trade Representative (USTR), which represents the United States in WTO disputes. Also discussed are pieces of legislation that dictate procedures for specifically the United States in instances of WTO disputes.
Date: April 8, 2010
Creator: Grimmett, Jeanne J.
Object Type: Report
System: The UNT Digital Library
The Dublin Citizen (Dublin, Tex.), Vol. 20, No. 32, Ed. 1 Thursday, April 8, 2010 (open access)

The Dublin Citizen (Dublin, Tex.), Vol. 20, No. 32, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
Electra Star-News (Electra, Tex.), Vol. 103, No. 33, Ed. 1 Thursday, April 8, 2010 (open access)

Electra Star-News (Electra, Tex.), Vol. 103, No. 33, Ed. 1 Thursday, April 8, 2010

Weekly newspaper from Electra, Texas that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: unknown
Object Type: Newspaper
System: The Portal to Texas History
[Email from Daniel Graney about lanyards at convention] (open access)

[Email from Daniel Graney about lanyards at convention]

Email from Daniel Graney to Al Daniels on April 8, 2010, sharing a message from Neil McQueen discussing plastic holders and lanyards for the convention.
Date: April 8, 2010
Creator: unknown
Object Type: Letter
System: The UNT Digital Library

Ensemble: 2010-04-08 – Wind Symphony

Access: Use of this item is restricted to the UNT Community
Wind symphony concert presented at the UNT College of Music Winspear Performance Hall.
Date: April 8, 2010
Creator: North Texas Wind Symphony
Object Type: Sound
System: The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, April 8, 2010 (open access)

The Express-Star (Chickasha, Okla.), Ed. 1 Thursday, April 8, 2010

Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date: April 8, 2010
Creator: Wray, Kelly
Object Type: Newspaper
System: The Gateway to Oklahoma History

Faculty Recital: 2010-04-08 - Gustavo Romero, piano

Access: Use of this item is restricted to the UNT Community
Faculty recital presented at the UNT College of Music Recital Hall.
Date: April 8, 2010
Creator: Romero, Gustavo
Object Type: Sound
System: The UNT Digital Library
Federal Register, Volume 75, Number 67, April 8, 2010, Pages 17847-18046 (open access)

Federal Register, Volume 75, Number 67, April 8, 2010, Pages 17847-18046

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: April 8, 2010
Creator: United States. Office of the Federal Register.
Object Type: Journal/Magazine/Newsletter
System: The UNT Digital Library
Fermi level stabilization energy in cadmium oxide (open access)

Fermi level stabilization energy in cadmium oxide

We have studied the effects of high concentrations of native point defects on the electrical and optical properties of CdO. The defects were introduced by irradiation with high energy He+, Ne+, Ar+ and C+ ions. Increasing the irradiation damage with particles heavier than He+ increases the electron concentration until a saturation level of 5x1020 cm-3 is reached. In contrast, due to the ionic character and hence strong dynamic annealing of CdO, irradiation with much lighter He+ stabilizes the electron concentration at a much lower level of 1.7x1020 cm-3. A large shift of the optical absorption edge with increasing electron concentration in irradiated samples is explained by the Burstein-Moss shift corrected for electron-electron and electron-ion interactions. The saturation of the electron concentration and the optical absorption edge energy are consistent with a defect induced stabilization of the Fermi energy at 1 eV above the conduction band edge. The result is in a good agreement with previously determined Fermi level pinning energies on CdO surfaces. The results indicate that CdO shares many similarities with InN, as both materials exhibit extremely large electron affinities and an unprecedented propensity for n-type conductivity.
Date: April 8, 2010
Creator: Speaks, D. T.; Mayer, M. A.; Yu, K. M.; Mao, S. S.; Haller, E. E. & Walukiewicz, W.
Object Type: Article
System: The UNT Digital Library