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Characterization, Leaching, and Filtration Testing for Tributyl Phosphate (TBP, Group 7) Actual Waste Sample Composites
.A testing program evaluating actual tank waste was developed in response to Task 4 from the M-12 External Flowsheet Review Team (EFRT) issue response plan. The bulk water-insoluble solid wastes that are anticipated to be delivered to the Waste Treatment and Immobilization Plant (WTP) were identified according to type such that the actual waste testing could be targeted to the relevant categories. Eight broad waste groupings were defined. Samples available from the 222S archive were identified and obtained for testing. The actual waste-testing program included homogenizing the samples by group, characterizing the solids and aqueous phases, and performing parametric leaching tests. The tributyl phosphate sludge (TBP, Group 7) is the subject of this report. The Group 7 waste was anticipated to be high in phosphorus as well as aluminum in the form of gibbsite. Both are believed to exist in sufficient quantities in the Group 7 waste to address leaching behavior. Thus, the focus of the Group 7 testing was on the removal of both P and Al. The waste-type definition, archived sample conditions, homogenization activities, characterization (physical, chemical, radioisotope, and crystal habit), and caustic leaching behavior as functions of time, temperature, and hydroxide concentration are discussed in this report. …
Date:
March 9, 2009
Creator:
Edwards, Matthew K.; Billing, Justin M.; Blanchard, David L.; Buck, Edgar C.; Casella, Amanda J.; Casella, Andrew M. et al.
Object Type:
Report
System:
The UNT Digital Library
Lexington Observer (Lexington, Okla.), Vol. 10, No. 48, Ed. 1 Thursday, March 9, 2006
Weekly newspaper from Lexington, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 9, 2006
Creator:
Edwards, Olvis
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oral History Interview with Eli Escobar, March 9, 2004
The National Museum of the Pacific War presents an interview with Eli Escobar. Escobar was drafted into the Army in May 1944. When Escobar arrived in France in November, 1944, he joined Company K, 242nd Infantry Regiment, 42nd Infantry Division. In January, 1945, Escobar got captured by German troops near Haguenau. He spent the remainder of the war as a prisoner of war. He was liberated in late April and returned to the US. Escobar was discharged in November, 1945.
Date:
March 9, 2004
Creator:
Escobar, Eli
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Eli Escobar, March 9, 2004
The National Museum of the Pacific War presents an interview with Eli Escobar. Escobar was drafted into the Army in May 1944. When Escobar arrived in France in November, 1944, he joined Company K, 242nd Infantry Regiment, 42nd Infantry Division. In January, 1945, Escobar got captured by German troops near Haguenau. He spent the remainder of the war as a prisoner of war. He was liberated in late April and returned to the US. Escobar was discharged in November, 1945.
Date:
March 9, 2004
Creator:
Escobar, Eli
Object Type:
Text
System:
The Portal to Texas History
Anodic Polarization Behavior of Titanium Grade 7 in Dust Deliquescence Salt Environments
It is planned to use the highly corrosion resistant titanium grade 7 (Ti Gr 7) and a high strength titanium alloy (Ti Gr 29) to fabricate the drip shield for the Yucca Mountain repository. Ti Gr 7 contains 0.15% Palladium (Pd) to increase its corrosion performance, mainly under reducing conditions. It was important to determine the corrosion behavior of Ti Gr 7 in concentrated brines at temperatures higher than 100 C, which may represent the behavior of dust deliquescence solutions. Tests were performed in concentrated NaCl + KCl solutions containing also nitrates and fluorides. Results show that Ti Gr 7 was highly resistant to general and localized corrosion. Some specimens were polarized to potentials higher than 4 volts. None of the tightly creviced specimens suffered crevice corrosion. The presence of fluoride promoted localized corrosion around the edges of the crevice former.
Date:
March 9, 2007
Creator:
Evans, K J & Rebak, R B
Object Type:
Article
System:
The UNT Digital Library
The Canadian Record (Canadian, Tex.), Vol. 110, No. 10, Ed. 1 Thursday, March 9, 2000
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
March 9, 2000
Creator:
Ezzell, Nancy & Brown, Laurie Ezzell
Object Type:
Newspaper
System:
The Portal to Texas History
Improved Spatial Resolution in Thick, Fully-Depleted CCDs withEnhanced Red Sensitivity
The point spread function (PSF) is an important measure of spatial resolution in CCDs for point-like objects, since it affects image quality and spectroscopic resolution. We present new data and theoretical developments for lateral charge diffusion in thick, fully-depleted charge-coupled devices (CCDs) developed at Lawrence Berkeley National Laboratory (LBNL). Because they can be over-depleted, the LBNL devices have no field-free region and diffusion is controlled through the application of an external bias voltage. We give results for a 3512 x 3512 format, 10.5 {micro}m pixel back-illuminated p-channel CCD developed for the SuperNova/Acceleration Probe (SNAP), a proposed satellite-based experiment designed to study dark energy. The PSF was measured at substrate bias voltages between 3 V and 115 V. At a bias voltage of 115 V, we measure an rms diffusion of 3.7 {+-} 0.2 {micro}m. Lateral charge diffusion in LBNL CCDs will meet the SNAP requirements.
Date:
March 9, 2006
Creator:
Fairfield, Jessamyn A.; Groom, Donald E.; Bailey, Stephen J.; Bebek, Christopher J.; Holland, Stephen E.; Karcher, Armin et al.
Object Type:
Article
System:
The UNT Digital Library
Analysis of Americium in Transplutonium Process Solutions
One of the more difficult analyses in the transplutonium field is the determination of americium at trace levels in a complex matrix such as a process dissolver solution. Because of these conditions a highly selective separation must precede the measurement of americium. The separation technique should be mechanically simple to permit remote operation with master-slave manipulators. For subsequent americium measurement by the mass spectroscopic isotopic-dilution technique, plutonium and curium interferences must also have been removed.
Date:
March 9, 2001
Creator:
Ferguson, R.B.
Object Type:
Article
System:
The UNT Digital Library
Nuclear Safety Evaluation of Units Containing 238Pu and 239Pu as Oxides
This study evaluates the nuclear safety of {sup 238}Pu and PuO{sub 2} under a variety of conditions for shipping and storage and is applicable to mixtures of {sup 238}Pu-{sup 239}Pu oxides. Evaluations were made for a three-container shipping package (Plutonium Finishing Shipping Cask) for compliance with AECM Chapter 0529 Shipping Regulations. Some calculations were also made for the two inner containers as a storage unit to extend the usefulness to cover B-Line storage. This safety analysis was developed with {sup 239}Pu and {sup 238}Pu cross sections using KENO, a multigroup Monte Carlo criticality program. Conservative allowances were made so that the results are valid for all mixtures of {sup 238}Pu-{sup 239}Pu. For storage conditions a planar array one unit tall of two or three container packages is shown to be safe regardless of water moderation provided the spacing is 2.375'' center-to-center or greater.
Date:
March 9, 2001
Creator:
Fernandez, L. P.
Object Type:
Report
System:
The UNT Digital Library
The DARHT Scattering Wire Spectrometer: Operation and Checkout on ETA II
The DARHT Scattering wire energy spectrometer has been realized and checked out on ETA II. The ETA II beam energy is generally around 5.3 MeV. This value varies from pulse-to-pulse by around 0.5% and from month-to-month by as much as 6%. The energy acceptance of the spectrometer is {+-} 5% and the time response is less than 10 ns. The instrument was calibrated to enable absolute measurements of the ETA II beam energy accurate to {+-}3%. The beam energy in MeV is related to the bending magnetic field B{sub kG} according to E{sub MeV} = 0.511[{radical}(1+347.2B{sub kG}{sup 2}) -1]. The major difficulty encountered was in the development of detectors for the scattered electrons passing through the instrument. Fortunately one detector was fabricated that worked satisfactorily which enabled us to complete the tests on ETA II. The ETA II experiments and initial FXR experiments suggest that spurious X-ray signals will not prove troublesome. No results are yet available in the x-ray environment of DARHT.
Date:
March 9, 2005
Creator:
Fessenden, T J
Object Type:
Report
System:
The UNT Digital Library
The Federal Networking and Information Technology Research and Development Program: Funding Issues and Activities
This report describes the federal networking and information technology research and development program on funding issues and activities.
Date:
March 9, 2005
Creator:
Figliola, Patricia Moloney
Object Type:
Report
System:
The UNT Digital Library
Seminole Sentinel (Seminole, Tex.), Vol. 95, No. 42, Ed. 1 Sunday, March 9, 2003
Semi-weekly newspaper from Seminole, Texas that includes local, state, and national news along with extensive advertising.
Date:
March 9, 2003
Creator:
Fisher, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Sachse News (Sachse, Tex.), Vol. 2, No. 6, Ed. 1 Thursday, March 9, 2006
Weekly newspaper from Sachse, Texas that includes local, state and national news along with advertising.
Date:
March 9, 2006
Creator:
Fisher, Donnita Nesbit
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 18, No. 46, Ed. 1 Thursday, March 9, 2000
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
March 9, 2000
Creator:
Fleming, Jackie
Object Type:
Newspaper
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 93, No. 7, Ed. 1 Wednesday, March 9, 2005
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
March 9, 2005
Creator:
Fowler, Whitney
Object Type:
Newspaper
System:
The Portal to Texas History
Hydrodynamic Simulations of Tilted Thick-Disk Accretion onto a Kerr Black Hole
None
Date:
March 9, 2005
Creator:
Fragile, P C & Anninos, P
Object Type:
Article
System:
The UNT Digital Library
Potential Impacts of Leakage from Black Rock Reservoir on the Hanford Site Unconfined Aquifer: Initial Hypothetical Simulations of Flow and Contaminant Transport
Initial scoping calculations of the unconfined aquifer at the Hanford Site were carried out for the U.S. Bureau of Reclamation (USBR) to investi¬gate the potential impacts on the Hanford unconfined aquifer that would result from leakage from the proposed Black Rock Reservoir to the west. Although impacts on groundwater flow and contaminant transport were quantified based on numerical simulation results, the investigation represented a quali¬tative assessment of the potential lateral recharge that could result in adverse effects on the aquifer. Because the magnitude of the potential leakage is unknown, hypothetical bounding calculations were performed. When a quantitative analysis of the magnitude of the potential recharge from Black Rock Reservoir is obtained, the hydrologic impacts analysis will be revisited. The analysis presented in this report represent initial bounding calculations. A maximum lateral recharge (i.e., upland flux) was determined in the first part of this study by executing steady-state flow simulations that raised the water table no higher than the elevation attained in the Central Plateau during the Hanford operational period. This metric was selected because it assumed a maximum remobilization of contaminants that existed under previous fully saturated conditions. Three steady-state flow fields were then used to analyze impacts to transient …
Date:
March 9, 2007
Creator:
Freedman, Vicky L.
Object Type:
Report
System:
The UNT Digital Library
High-resolution, high-transmission soft x-ray spectrometer for the study of biological samples
We present a variable line-space grating spectrometer for soft x-rays that covers the photon energy range between 130 and 650 eV. The optical design is based on the Hettrick-Underwood principle and tailored to synchrotron-based studies of radiation-sensitive biological samples. The spectrometer is able to record the entire spectral range in one shot, i.e., without any mechanical motion, at a resolving power of 1200 or better. Despite its slitless design, such a resolving power can be achieved for a source spot as large as 30x3000 mu m2, which is important for keeping beam damage effects in radiation-sensitive samples low. The high spectrometer efficiency allows recording of comprehensive two-dimensional resonant inelastic soft x-ray scattering (RIXS) maps with good statistics within several minutes. This is exemplarily demonstrated for a RIXS map of highly oriented pyrolytic graphite, which was taken within 10 min.
Date:
March 9, 2009
Creator:
Fuchs, Oliver; Weinhardt, L.; Blum, M.; Weigand, M.; Umbach, E.; Bar, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Senior Recital: 2007-03-09 - Romel Fuenmayor, violin
Access:
Use of this item is restricted to the UNT Community
A senior recital presented at the UNT College of Music Recital Hall.
Date:
March 9, 2007
Creator:
Fuenmayor, Romel
Object Type:
Sound
System:
The UNT Digital Library
The Oklahoma Daily (Norman, Okla.), Vol. 90, No. 117, Ed. 1 Thursday, March 9, 2006
Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 9, 2006
Creator:
Ganus, Sara
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Thermochemistry is not a lower bound to the activation energy of endothermic reactions: A kinetic study of the gas-phase reaction of atomic chlorine with ammonia
Article on a kinetic study of the gas-phase reaction of atomic chlorine with ammonia.
Date:
March 9, 2006
Creator:
Gao, Yide; Alecu, I. M.; Hsieh, P-C; Morgan, Brad P.; Marshall, Paul & Krasnoperov, Lev N.
Object Type:
Article
System:
The UNT Digital Library
Soft Mode Anomalies in the Perovskite Relaxor Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}
Neutron inelastic scattering measurements of the polar TO phonon mode in the cubic relaxor Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}, at room temperature, reveal anomalous behavior similar to that recently observed in Pb(Zn{sub 1/3}Nb{sub 2/3}){sub 0.92}Ti{sub 0.08}O{sub 3} in which the optic branch appears to drop precipitously into the acoustic branch at a finite value of the momentum transfer q = 0.2 {angstrom}{sub {minus}1}, measured from the zone center. By contrast, a recent neutron study indicates that PMN exhibits a normal TO phonon dispersion at 800 K. The authors speculate this behavior is common to all relaxor materials, and is the result of the presence of nanometer-scale polarized domains in the crystal that form below a temperature T{sub d}, which effectively prevent the propagation of long wavelength (q = 0) phonons.
Date:
March 9, 2000
Creator:
Gehring, P. M.; Vakrushev, S. B. & Shirane, G.
Object Type:
Article
System:
The UNT Digital Library
Child Care Issues in the 109th Congress
This report discusses how the federal support for child care comes in many forms, ranging from grant programs to tax provisions. It also points out how some programs serve as specifically dedicated funding sources for child care services, while for others, child care is just one of many purposes for which funds may be used.
Date:
March 9, 2006
Creator:
Gish, Melinda
Object Type:
Report
System:
The UNT Digital Library
Today Cedar Hill (Duncanville, Tex.), Vol. 34, No. 50, Ed. 1 Thursday, March 9, 2000
Weekly newspaper published in Duncanville, Texas that includes local Cedar Hill, state, and national news along with advertising.
Date:
March 9, 2000
Creator:
Gooch, Robin
Object Type:
Newspaper
System:
The Portal to Texas History