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235U and TRU Holdup Measurements on the 321-M Sawbenches
The Analytical Development Section of Savannah River Technology Center (SRTC) was requested by the Facilities Disposition Projects (FDP) 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 on two sawbench components that were used for cutting U-Al fuel rods. The benches contained U-Al residue scattered on the bench tops and bagged up in plastic containers. It was very important to obtain an estimate of the HEU content of this residue in order to remove criticality concerns before vacuuming it into a much smaller volume. A portable high purity germanium (HPGe) detection system and a portable sodium iodide (NaI) detection system were used to determine highly enriched uranium (HEU) holdup and to determine holdup Np-237 and Am-241 that were observed in these components. The measured Np-237 and Am-241 contents were especially important in these components …
Date:
July 2, 2004
Creator:
Dewberry, R
Object Type:
Report
System:
The UNT Digital Library
Production of Depleted UO<sub>2</sub>Kernels for the Advanced Gas-Cooled Reactor Program for Use in TRISO Coating Development
The main objective of the Depleted UO{sub 2} Kernels Production Task at Oak Ridge National Laboratory (ORNL) was to conduct two small-scale production campaigns to produce 2 kg of UO{sub 2} kernels with diameters of 500 {+-} 20 {micro}m and 3.5 kg of UO{sub 2} kernels with diameters of 350 {+-} 10 {micro}m for the U.S. Department of Energy Advanced Fuel Cycle Initiative Program. The final acceptance requirements for the UO{sub 2} kernels are provided in the first section of this report. The kernels were prepared for use by the ORNL Metals and Ceramics Division in a development study to perfect the triisotropic (TRISO) coating process. It was important that the kernels be strong and near theoretical density, with excellent sphericity, minimal surface roughness, and no cracking. This report gives a detailed description of the production efforts and results as well as an in-depth description of the internal gelation process and its chemistry. It describes the laboratory-scale gel-forming apparatus, optimum broth formulation and operating conditions, preparation of the acid-deficient uranyl nitrate stock solution, the system used to provide uniform broth droplet formation and control, and the process of calcining and sintering UO{sub 3} {center_dot} 2H{sub 2}O microspheres to form dense …
Date:
December 2, 2004
Creator:
Collins, J. L.
Object Type:
Report
System:
The UNT Digital Library
High Throughput Synthesis, Performance and Stability of Electrocatalysts for Hydrogen-Air Fuel Cells
None
Date:
November 2, 2004
Creator:
Sun, Yipeng; Rice, Gordon & Atanassova, Paolina
Object Type:
Article
System:
The UNT Digital Library
Massive Star Formation in a Gravitationally-Lensed H II Galaxy at z = 3.357
The Lynx arc, with a redshift of 3.357, was discovered during spectroscopic follow-up of the z = 0.570 cluster RX J0848+4456 from the ROSAT Deep Cluster Survey. The arc is characterized by a very red R - K color and strong, narrow emission lines. Analysis of HST WFPC 2 imaging and Keck optical and infrared spectroscopy shows that the arc is an H II galaxy magnified by a factor of {approx} 10 by a complex cluster environment. The high intrinsic luminosity, the emission line spectrum, the absorption components seen in Ly{alpha} and C IV, and the restframe ultraviolet continuum are all consistent with a simple H II region model containing {approx} 10{sup 6} hot O stars. The best fit parameters for this model imply a very hot ionizing continuum (T{sub BB} {approx} 80, 000 K), high ionization parameter (log U {approx} -1), and low nebular metallicity (Z/Z{sub {circle_dot}} {approx} 0.05). The narrowness of the emission lines requires a low mass-to-light ratio for the ionizing stars, suggestive of an extremely low metallicity stellar cluster. The apparent overabundance of silicon in the nebula could indicate enrichment by past pair instability supernovae, requiring stars more massive than {approx}140M{sub {circle_dot}}.
Date:
March 2, 2004
Creator:
Villar-Martin, M.; Stern, D.; Hook, R. N.; Rosati, P.; Lombardi, M.; Humphrey, A. et al.
Object Type:
Article
System:
The UNT Digital Library
FY 2005 Budget Summary
This budget summary provides descriptions and data on NOAA's programs, cross-cutting themes, and strategic goals for the 2005 fiscal year.
Date:
February 2, 2004
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
The K-selected Butcher-Oemler Effect
We investigate the Butcher-Oemler effect using samples of galaxies brighter than observed frame K* + 1.5 in 33 clusters at 0.1 {approx}< z {approx}< 0.9. We attempt to duplicate as closely as possible the methodology of Butcher & Oemler. Apart from selecting in the K-band, the most important difference is that we use a brightness limit fixed at 1.5 magnitudes below an observed frame K* rather than the nominal limit of rest frame M(V ) = -20 used by Butcher & Oemler. For an early type galaxy at z = 0.1 our sample cutoff is 0.2 magnitudes brighter than rest frame M(V ) = -20, while at z = 0.9 our cutoff is 0.9 magnitudes brighter. If the blue galaxies tend to be faint, then the difference in magnitude limits should result in our measuring lower blue fractions. A more minor difference from the Butcher & Oemler methodology is that the area covered by our galaxy samples has a radius of 0.5 or 0.7 Mpc at all redshifts rather than R{sub 30}, the radius containing 30% of the cluster population. In practice our field sizes are generally similar to those used by Butcher & Oemler. We find the fraction of …
Date:
March 2, 2004
Creator:
Stanford, S. A.; De Propris, R.; Dickinson, M. & Eisenhardt, P. R.
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Crane Body Found]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 2, 2004
Creator:
NBC 5 (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Missing Woman]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
February 2, 2004
Creator:
NBC 5 (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: President Votes]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
November 2, 2004
Creator:
NBC 5 (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[Press release: The Black Academy of Arts and Letters Presents A FilmFeast and Film Talk with Actor and Producer Tim Reid on Saturday, March 13, 2004]
Press release from the Black Academy of Arts and Letters discussing a film festival featuring actor Tim Reid on March 13, 2004 at the Dallas Convention Center Theatre Complex.
Date:
March 2, 2004
Creator:
Black Academy of Arts and Letters
Object Type:
Text
System:
The UNT Digital Library
Timpson & Tenaha News (Timpson, Tex.), Vol. 19, No. 35, Ed. 1 Thursday, September 2, 2004
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
September 2, 2004
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Rains County Leader (Emory, Tex.), Vol. 116, No. 37, Ed. 1 Tuesday, March 2, 2004
Weekly newspaper from Emory, Texas that includes local, state, and national news along with advertising.
Date:
March 2, 2004
Creator:
Hill, Earl Clyde, Jr.
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 109, No. 1, Ed. 1 Friday, January 2, 2004
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 2, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 109, No. 23, Ed. 1 Friday, April 2, 2004
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
April 2, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 122, No. 36, Ed. 1 Sunday, May 2, 2004
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
May 2, 2004
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Assessment of Food Chain Pathway Parameters in Biosphere Models: Annual Progress Report for Fiscal Year 2004
This Annual Progress Report describes the work performed and summarizes some of the key observations to date on the U.S. Nuclear Regulatory Commission’s project Assessment of Food Chain Pathway Parameters in Biosphere Models, which was established to assess and evaluate a number of key parameters used in the food-chain models used in performance assessments of radioactive waste disposal facilities. Section 2 of this report describes activities undertaken to collect samples of soils from three regions of the United States, the Southeast, Northwest, and Southwest, and perform analyses to characterize their physical and chemical properties. Section 3 summarizes information gathered regarding agricultural practices and common and unusual crops grown in each of these three areas. Section 4 describes progress in studying radionuclide uptake in several representative crops from the three soil types in controlled laboratory conditions. Section 5 describes a range of international coordination activities undertaken by Project staff in order to support the underlying data needs of the Project. Section 6 provides a very brief summary of the status of the GENII Version 2 computer program, which is a “client” of the types of data being generated by the Project, and for which the Project will be providing training to …
Date:
December 2, 2004
Creator:
Napier, Bruce A.; Krupka, Kenneth M.; Fellows, Robert J.; Cataldo, Dominic A.; Valenta, Michelle M. & Gilmore, Tyler J.
Object Type:
Report
System:
The UNT Digital Library
Texas Jewish Post (Fort Worth, Tex.), Vol. 58, No. 49, Ed. 1 Thursday, December 2, 2004
Weekly Jewish newspaper from Fort Worth, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 2, 2004
Creator:
Wisch, Rene & Wisch-Ray, Sharon
Object Type:
Newspaper
System:
The Portal to Texas History
The Odem-Edroy Times (Odem, Tex.), Vol. 58, No. 48, Ed. 1 Thursday, December 2, 2004
Weekly newspaper from Odem, Texas that includes local, state, and national news along with advertising.
Date:
December 2, 2004
Creator:
Tracy, Jimmy
Object Type:
Newspaper
System:
The Portal to Texas History
The Odem-Edroy Times (Odem, Tex.), Vol. 58, No. 35, Ed. 1 Thursday, September 2, 2004
Weekly newspaper from Odem, Texas that includes local, state, and national news along with advertising.
Date:
September 2, 2004
Creator:
Tracy, Jimmy
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 109, No. 36, Ed. 1 Friday, July 2, 2004
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
July 2, 2004
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 122, No. 97, Ed. 1 Thursday, December 2, 2004
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
December 2, 2004
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 118, No. 49, Ed. 1 Thursday, December 2, 2004
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 2, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Hondo Anvil Herald (Hondo, Tex.), Vol. 118, No. 36, Ed. 1 Thursday, September 2, 2004
Weekly newspaper from Hondo, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 2, 2004
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Polk County Enterprise (Livingston, Tex.), Vol. 122, No. 71, Ed. 1 Thursday, September 2, 2004
Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.
Date:
September 2, 2004
Creator:
White, Barbara
Object Type:
Newspaper
System:
The Portal to Texas History