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235U Holdup Measurements in Three 321-M Exhaust HEPA Banks
The Analytical Development Section of Savannah River National Laboratory (SRNL) was requested by the Facilities Disposition Division to determine the holdup of enriched uranium in the 321-M facility as part of an overall deactivation project of the facility. The 321-M facility was used to fabricate enriched uranium fuel assemblies, lithium-aluminum target tubes, neptunium assemblies, and miscellaneous components for the production reactors. The results of the holdup assays are essential for determining compliance with the Waste Acceptance Criteria, Material Control & Accountability, and to meet criticality safety controls. This report covers holdup measurements of uranium residue in three HEPA filter exhaust banks of the 321-M facility. Each of the exhaust banks has dimensions near 7' x 14' x 4' and represents a complex holdup problem. A portable HPGe detector and EG&G Dart system that contains the high voltage power supply and signal processing electronics were used to determine highly enriched uranium (HEU) holdup. A personal computer with Gamma-Vision software was used to control the Dart MCA and to provide space to store and manipulate multiple 4096-channel {gamma}-ray spectra. Some acquisitions were performed with the portable detector configured to a Canberra Inspector using NDA2000 acquisition and analysis software. Our results for each …
Date:
February 24, 2005
Creator:
Dewberry, R
Object Type:
Report
System:
The UNT Digital Library
The accelerated site technology deployment program presents the segmented gate system
The Department of Energy (DOE) is working to accelerate the acceptance and application of innovative technologies that improve the way the nation manages its environmental remediation problems. The DOE Office of Science and Technology established the Accelerated Site Technology Deployment Program (ASTD) to help accelerate the acceptance and implementation of new and innovative soil and ground water remediation technologies. Coordinated by the Department of Energy's Idaho Office, the ASTD Program reduces many of the classic barriers to the deployment of new technologies by involving government, industry, and regulatory agencies in the assessment, implementation, and validation of innovative technologies. The paper uses the example of the Segmented Gate System (SGS) to illustrate how the ASTD program works. The SGS was used to cost effectively separate clean and contaminated soil for four different radionuclides: plutonium, uranium, thorium, and cesium. Based on those results, it has been proposed to use the SGS at seven other DOE sites across the country.
Date:
February 24, 2000
Creator:
PATTESON,RAYMOND; MAYNOR,DOUG & CALLAN,CONNIE
Object Type:
Article
System:
The UNT Digital Library
[Actors of the Ashe Caribbean Performing Arts Ensemble]
Photograph of a group of actors, seen performing the award winning musical "Lift Up Jamaica." The actors are part of the Ashe Caribbean Performing Arts Ensemble with Michael Holgate (center front) as one of the leading characters of the musical. The musical event was held in sponsorship by The Black Academy of Arts and Letters in Dallas, Texas and was performed at the Dallas Convention Center Complex in the Naomi Burton Theatre on 650 S. Griffin St., Saturday, February 24th 2001.
Date:
February 24, 2001
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[Admission Form for UNT]
A meticulously completed application for admission to the Marcus Fellowship Program at the University of North Texas (UNT).
Date:
February 24, 2000
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Agriculture Production: USDA Needs to Build on 2005 Experience to Minimize the Effects of Asian Soybean Rust in the Future
A letter report issued by the Government Accountability Office with an abstract that begins "In 2005, U.S. agriculture faced potentially devastating losses from Asian Soybean Rust (ASR), a fungal disease that spreads airborne spores. Fungicides approved by the Environmental Protection Agency (EPA) can protect against ASR. In 2005, growers in 31 states planted about 72.2 million soybean acres worth about $17 billion. While favorable weather conditions limited losses due to ASR, it still threatens the soybean industry. In May 2005, GAO described the U.S. Department of Agriculture's (USDA) efforts to prepare for ASR's entry, (Agriculture Production: USDA's Preparation for Asian Soybean Rust, GAO-05-668R). This report examines (1) USDA's strategy to minimize ASR's effects in 2005 and the lessons learned to improve future efforts and (2) USDA, EPA, and others' efforts to develop, test, and license fungicides for ASR and to identify and breed soybeans that tolerate it."
Date:
February 24, 2006
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Air Pollution and Greenhouse Gas Emissions from Ships
This report provides information regarding pollution from ships and port facilities; discusses some of the measures being implemented and considered by local, state, and federal regulatory agencies; discusses the efforts to ratify and to strengthen Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL); and describes legislation in Congress to control emissions from ships by amending the Clean Air Act (CAA).
Date:
February 24, 2009
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library
Air Pollution and Greenhouse Gas Emissions from Ships
This report provides information regarding pollution from ships and port facilities; discusses some of the measures being implemented and considered by local, state, and federal regulatory agencies; discusses the efforts to ratify and to strengthen Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL); and describes legislation in Congress to control emissions from ships by amending the Clean Air Act (CAA).
Date:
February 24, 2009
Creator:
McCarthy, James E.
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 124, No. 39, Ed. 1 Thursday, February 24, 2000
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 24, 2000
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. 129, No. 39, Ed. 1 Thursday, February 24, 2005
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
February 24, 2005
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 100, No. 291, Ed. 1 Thursday, February 24, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 103, No. 307, Ed. 1 Sunday, February 24, 2002
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2002
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 105, No. 294, Ed. 1 Tuesday, February 24, 2004
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2004
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 106, No. 275, Ed. 1 Thursday, February 24, 2005
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2005
Creator:
Andrews, Mike
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Altus Times (Altus, Okla.), Vol. 107, No. 277, Ed. 1 Friday, February 24, 2006
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2006
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 109, No. 228, Ed. 1 Sunday, February 24, 2008
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2008
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Times (Altus, Okla.), Vol. 111, No. 164, Ed. 1 Tuesday, February 24, 2009
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 24, 2009
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 111, No. 15, Ed. 1 Sunday, February 24, 2002
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
February 24, 2002
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
The Alvin Sun (Alvin, Tex.), Vol. 112, No. 15, Ed. 1 Monday, February 24, 2003
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
February 24, 2003
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
Amtrak: Budget and Reauthorizaton
The report discusses the most recent developments, backgrounds and analysis, finances and congressional hearing, Reports and Documents.
Date:
February 24, 2005
Creator:
Peterman, David Randall & Harrison, Glennon J.
Object Type:
Report
System:
The UNT Digital Library
Amtrak: Budget and Reauthorizaton
This issue brief discusses reform proposals from both the Administration and Amtrak in the 109th Congress. It addresses the appropriations requested by Amtrak, the reluctance of the Administration to provide aid, and its willingness to let Amtrak enter bankruptcy, resulting in restructuring and reform of inefficient operations.
Date:
February 24, 2005
Creator:
Peterman, David R. & Harrison, Glennon J.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Aquifer Response, Groundwater Flow, and PlumeEvolution at Site OU 1, Former Fort Ord, California
This report presents a continuation from Oldenburg et al. (2002) of analysis of the hydrogeology, In-Situ Permeable Flow Sensor (ISPFS) results, aquifer response, and changes in the trichloroethylene (TCE) groundwater plume at Operational Unit 1 (OU 1) adjacent to the former Fritzsche Army Airfield at the former Fort Ord Army Base, located on Monterey Bay in northern Monterey County. Fuels and solvents were burned on a portion of OU 1 called the Fire Drill Area (FDA) during airport fire suppression training between 1962 and 1985. This activity resulted in soil and groundwater contamination in the unconfined A-aquifer. In the late 1980's, soil excavation and bioremediation were successful in remediating soil contamination at the site. Shortly thereafter, a groundwater pump, treat, and recharge system commenced operation. This system has been largely successful at remediating groundwater contamination at the head of the groundwater plume. However, a trichloroethylene (TCE) groundwater plume extends approximately 3000 ft (900 m) to the northwest away from the FDA. In the analyses presented here, we augment our prior work (Oldenburg et al., 2002) with new information including treatment-system totalizer data, recent water-level and chemistry data, and data collected from new wells to discern trends in contaminant migration and …
Date:
February 24, 2005
Creator:
Jordan, Preston D.; Oldenburg, Curtis M. & Su, Grace W.
Object Type:
Report
System:
The UNT Digital Library
Analysis of systematic errors in lateral shearing interferometry for EUV optical testing
Lateral shearing interferometry (LSI) provides a simple means for characterizing the aberrations in optical systems at EUV wavelengths. In LSI, the test wavefront is incident on a low-frequency grating which causes the resulting diffracted orders to interfere on the CCD. Due to its simple experimental setup and high photon efficiency, LSI is an attractive alternative to point diffraction interferometry and other methods that require spatially filtering the wavefront through small pinholes which notoriously suffer from low contrast fringes and improper alignment. In order to demonstrate that LSI can be accurate and robust enough to meet industry standards, analytic models are presented to study the effects of unwanted grating and detector tilt on the system aberrations, and a method for identifying and correcting for these errors in alignment is proposed. The models are subsequently verified by numerical simulation. Finally, an analysis is performed of how errors in the identification and correction of grating and detector misalignment propagate to errors in fringe analysis.
Date:
February 24, 2009
Creator:
Miyakawa, Ryan; Naulleau, Patrick & Goldberg, Kenneth A.
Object Type:
Article
System:
The UNT Digital Library
An Anelastic Allspeed Projection Method for GravitationallyStratified Flows
This paper looks at gravitationally-stratified atmospheric flows at low Mach and Froude numbers and proposes a new algorithm to solve the compressible Euler equations, in which the asymptotic limits are recovered numerically and the boundary conditions for block-structured local refinement methods are well-posed. The model is non-hydrostatic and the numerical algorithm uses a splitting to separate the fast acoustic dynamics from the slower anelastic dynamics. The acoustic waves are treated implicitly while the anelastic dynamics is treated semi-implicitly and an embedded-boundary method is used to represent mountain ranges. We present an example that verifies our asymptotic analysis and a set of results that compares very well with the classical gravity wave results presented by Durran.
Date:
February 24, 2005
Creator:
Gatti-Bono, Caroline & Colella, Phillip
Object Type:
Article
System:
The UNT Digital Library
Anodic Kinetics of NiCriMo Alloys during Localized Corrosion
This report talks about Anodic Kinetics of NiCriMo Alloys during Localized Corrosion
Date:
February 24, 2006
Creator:
He, David X. & Newman, Roger C.
Object Type:
Article
System:
The UNT Digital Library