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SALT PHASE CHLORINATION OF REACTOR FUELS. IV. NIOBIUM BEHAVIOR IN THE LEAD CHLORIDE AND CHLORINE-LEAD CHLORIDE SYSTEMS

Description: Investigation of the behavior of Nb in PbCl/sub 2/ showed that the Nb dissolution rate is quite low. Since stirring increases the rate appreciably, it is likely that the initial reaction is diffusion controlled. A subsequent reaction is linear in rate with an activation energy of 23.4 kcal per mole. Incomplete volatilization of dissolved Nb from PbCl/sub 2/ is due to the presence of lower oxidation states of Nb. The addition of Cl to PbCl/sub 2/ increases the rate of dissolution of Nb. The rate… more
Date: March 15, 1962
Creator: Teague, J. L.; Hahn, H. T. & Vander Wall, E. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

National uranium resource evaluation program: hydrogeochemical and stream sediment reconnaissance basic data for Ely quadrangle, Nevada; Utah

Description: Field and laboratory data are presented for 1937 sediment samples from the Ely Quadrangle, Nevada; Utah. The samples were collected by Savannah River Laboratory; laboratory analysis and data reporting were performed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.
Date: October 15, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Near Term Hybrid Passenger Vehicle Development Program. Phase I, Final report. Appendix B: trade-off studies. Volume II. Appendices. [SPEC-78]

Description: These appendices to the Near Term Hybrid Vehicle Trade-off Studies reports present data on the SPEC-78 computer model for simulating vehicle performance, fuel economy, and exhaust emissions; propulsion system alternatives; lead-acid and sodium-sulfur batteries; and production cost estimates. (LCL)
Date: June 15, 1979
Creator: Traversi, M. & Piccolo, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Lead Poisoning: Federal Health Care Programs Are Not Effectively Reaching At-Risk Children

Description: A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO examined: (1) the risk of lead poisoning faced by young children served by federal health care programs; (2) the extent to which children served by these programs have been screened for this condition; (3) key reasons why screenings may not be occurring; and (4) problems that federal health care programs face in ensuring that children who have harmful lead levels in th… more
Date: January 15, 1999
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Breakthrough Energy Savings with Waterjet Technology

Description: Experiments performed at the University of Missouri-Rolla's Waterjet Laboratory have demonstrated clearly the ability of waterjets to disaggregate, in a single step, four different mineral ores, including ores containing iron, lead and copper products. The study focused mainly on galena-bearing dolomite, a lead ore, and compared the new technology with that of traditional mining and milling to liberate the valuable constituent for the more voluminous host rock. The technical term for the disint… more
Date: May 15, 2007
Creator: Saperstein, Lee W.; Grayson, R. Larry; Summers, David A.; Garcia-Joo, Jorge; Sutton, Greg; Woodward, Mike et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some TPC (Time Projection Chamber) measurements in an oxygen beam at the AGS

Description: The principal detector for AGS Experiment 810 is a Time Projection Chamber (TPC) in which it is intended to measure momenta and angles of a major fraction of the charged particles from each light ion collision. This report describes the results of a test of a prototype of the TPC in a beam of (14.6 /times/ 16 = 233.6 GeV/c) oxygen ions run in June of this year.
Date: November 15, 1988
Creator: Love, W. A.; Bonner, B. E.; Buchanan, J. A.; Chan, C. S.; Chiou, C. N.; Clement, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Performance of the Lester battery charger in electric vehicles

Description: Tests were performed on an improved battery charger manufactured by Lester Electrical of Nebraska, Inc. This charger was installed in a South Coast Technology Rabbit No. 4, which was equipped with lead-acid batteries produced by ESB Company. The primary purpose of the testing was to develop test methodologies for battery charger evaluation. To this end tests were developed to characterize the charger in terms of its charge algorithm and to assess the effects of battery initial state of charge a… more
Date: April 15, 1984
Creator: Vivian, H. C. & Bryant, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

National uranium resource evaluation program: hydrogeochemical and stream sediment reconnaissance basic data for Fresno quadrangle, California

Description: Field and laboratory data are presented for 1038 sediment samples from the Fresno Quadrangle, California. The samples were collected by Savannah River Laboratory; laboratory analysis and data reporting were perfomed by the Uranium Resource Evaluation Project at Oak Ridge, Tennessee.
Date: October 15, 1981
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Vehicle test report: South Coast Technology electric cconversion of a Volkswagen Rabbit

Description: The South Coast Technology Volkswagen Rabbit, an electric vehicle manufactured by South Coast Technology of Santa Barbara, California was tested at the Jet Propulsion Laboratory's (JPL) dynamometer facility in Pasadena and at JPL's Edwards Test Station (ETS) located near Lancaster, California. The tests were conducted between April and July, 1979. These tests were performed to characterize certain parameters of the South Coast Rabbit and to provide baseline data that will be used for the compar… more
Date: February 15, 1981
Creator: Price, T. W.; Shain, T. W. & Bryant, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Building Toxic Metal Characterization and Decontamination Report: Area 6, Building 914

Description: The purpose of this report is to outline the toxic metal characterization and decontamination efforts in Area 6, Building 914. This includes the initial building inspection, the hotspot sampling, results/findings, building cleanup, and the verification sampling. Building 914 is a steel light frame building that was constructed in 1992. It is about 16,454 square feet, and five employees are assigned to this building. According to the building's floor plan blueprints, it could be inferred that th… more
Date: August 15, 2011
Creator: Hygiene, NSTec Industrial
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Ultrafast Photovoltaic Response in Ferroelectric Nanolayers

Description: We show that light drives large-amplitude structural changes in thin films of the prototypical ferroelectric PbTiO3 via direct coupling to its intrinsic photovoltaic response. Using time-resolved x-ray scattering to visualize atomic displacements on femtosecond timescales, photoinduced changes in the unit-cell tetragonality are observed. These are driven by the motion of photogenerated free charges within the ferroelectric and can be simply explained by a model including both shift and screenin… more
Date: February 15, 2012
Creator: Daranciang, Dan
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CORROSION OF LEAD SHIELDING IN MODEL 9975 PACKAGE

Description: Experiments were performed to determine the corrosion rate of lead when exposed to off-gas or degradation products of organic materials used in the model 9975 package.[1] The experiments were completed within the framework of a parametric test matrix with variables of organic configuration, temperature, humidity and the effect of durations of exposure on the corrosion of lead in the 9975 package. The room temperature vulcanizing (RTV) sealant was the most corrosive organic species in the testin… more
Date: March 15, 2006
Creator: Subramanian, K
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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2004 Toxic Chemical Release Inventory Report for the Emergency Planning and Community Right-to-Know Act of 1986, Title III, Section 313

Description: Section 313 of Emergency Planning and Community Right-to-Know Act (EPCRA) specifically requires facilities to submit a Toxic Chemical Release Inventory Report (Form R) to the U.S. Environmental Protection Agency (EPA) and state agencies if the owners and operators manufacture, process, or otherwise use any of the listed toxic chemicals above listed threshold quantities. EPA compiles this data in the Toxic Release Inventory database. Form R reports for each chemical over threshold quantities mus… more
Date: January 15, 2006
Creator: Stockton, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In situ measurement of electromigration-induced transient stress in Pb-free Sn-Cu solder joints by synchrotron radiation based X-ray polychromatic microdiffraction

Description: Electromigration-induced hydrostatic elastic stress in Pb-free SnCu solder joints was studied by in situ synchrotron X-ray white beam microdiffraction. The elastic stresses in two different grains with similar crystallographic orientation, one located at the anode end and the other at the cathode end, were analyzed based on the elastic anisotropy of the {beta}-Sn crystal structure. The stress in the grain at the cathode end remained constant except for temperature fluctuations, while the compre… more
Date: May 15, 2009
Creator: Chen, Kai; Tamura, Nobumichi; Kunz, Martin; Tu, King-Ning & Lai, Yi-Shao
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

The Speciation of Groundwater Contaminated with Coal Pile Leachate at the Savannah River Site, South Carolina

Description: Modeling the transport of contaminant metals and designing systems for their remediation requires an understanding of the metal`s speciation. Thus, analysis of contaminant speciation and evaluation of the processes that can change the speciation should be done during characterization of the contaminated site. This approach is being used at the Savannah River Site for a metals contaminated site that will serve as a test platform for metals remediation technologies. The site is adjacent to a coal… more
Date: May 15, 1995
Creator: Denham, M. E. & Nichols, R. L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Anomalous creep in Sn-rich solder joints

Description: This paper discusses the creep behavior of example Sn-rich solders that have become candidates for use in Pb-free solder joints. The specific solders discussed are Sn-3.5Ag, Sn-3Ag-0.5Cu, Sn-0.7Cu and Sn-10In-3.1Ag, used in thin joints between Cu and Ni-Au metallized pads.
Date: March 15, 2002
Creator: Song, Ho Geon; Morris, John W., Jr. & Hua, Fay
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Wetting and interface integrity of Sn-Ag-Bi solder/Fe-42 percent Ni alloy system

Description: The wetting and interfacial integrity of lead-free Sn-Ag and Sn-Ag-Bi solders with 42 alloy (Fe-42wt percent Ni) were investigated. A tin-iron intermetallic layer formed at the interface and, during cooling, Ni3Sn4 platelets precipitated in the solder. After bonding, the Sn-3Ag joints have a eutectic microstructure, with a fine network of Ag3Sn particles surrounding large primary -Sn grains. Bismuth addition to Sn-3Ag improved wettability, but decreased the joint strength, owing to Bi segregati… more
Date: January 15, 2002
Creator: Hwang, C.-W.; Suganuma, K.; Saiz, E. & Tomsia, A.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Raman phonons in RPO{sub 4} crystals.

Description: Orthophosphates formed by elements in the first half of the lanthanide transition series (La, Pr, Nd, Sm, Eu and Gd) are structural analogs to the monoclinic mineral monazite. This mineral is characterized by an almost unique combination of properties that make its synthetic forms attractive as possible hosts for the long-term storage of actinide wastes. Crystals of lanthanide orthophosphates were grown by dissolving and by reacting lanthanide oxides in molten lead pyrophosphate at high tempera… more
Date: May 15, 2002
Creator: Paschoal, C. W. A.; Ayala, A. P.; Guedes, I.; Loong, C.-K. & Boatner, L. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New experiments elucidating the current limiting mechanisms of Ag-sheathed (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} tapes.

Description: Multiple current limiting mechanisms exist from the nanometer to millimeter scale in Ag-sheathed (Bi,Pb)-2223 tapes. Recent studies of the zero-field critical current density (J{sub c} (0T, 77K)), the irreversibility field (H*) and the crack microstructure elucidate these properties. We show that H*(77K) can vary significantly over the range {approximately}120-260 mT, independently of J{sub c} (0T, 77K). Cracks, actual or incipient, exist on the sub to several hundred micron scale. Surface magn… more
Date: January 15, 1999
Creator: Anderson, J. W.; Babcock, S. E.; Cai, X. Y.; Dorris, S. E.; Feldmann, M.; Jiang, J. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sodium Graphite Reactor Quarterly Progress Report for October-December 1955. Section A. Section B

Description: An analysis was made of the nuclear parameters for sodium graphite reactor lattices. These parameters include thermal utilization, macroscopic cross sections, thermal diffusion length, and neutron absorption. Results of all calculations are given in graphical form. Test fuel slugs for the SRE were cycled up to 500 times between 100 and 500 deg C at the rate of 2 cycles/hr. Results are tabulated. The centrifugal casting of U alloy fuel slugs is briefly evaluated. Results of the microscopic exami… more
Date: April 15, 1956
Creator: Martin, A. B. & Cochran, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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