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[Catalyst research]. Final Report

[Catalyst research]. Final Report

Date: March 14, 2005
Creator: (deceased), Ian P Rothwell & place), David R McMillin (in his
Description: Research results are the areas of catalyst precursor synthesis, catalyst fluxionality, catalyst stability, polymerization of {alpha}-olefins as well as the chemistry of Group IV and Group V metal centers with aryloxide and arylsulfide ligands.
Contributing Partner: UNT Libraries Government Documents Department
Closeout of Advanced Boron and Metal Loaded High Porosity Carbons.

Closeout of Advanced Boron and Metal Loaded High Porosity Carbons.

Date: May 1, 2011
Creator: (deceased), Peter C. Eklund; Chung, T. C. Mike; Foley, Henry C. & Crespi, Vincent H.
Description: The Penn State effort explored the development of new high-surface-area materials for hydrogen storage, materials that could offer enhancement in the hydrogen binding energy through a direct chemical modification of the framework in high specific-surface-area platforms. The team chemically substituted boron into the hexagonal sp2 carbon framework, dispersed metal atoms bound to the boro-carbon structure, and generated the theory of novel nanoscale geometries that can enhance storage through chemical frustration, sheet curvature, electron deficiency, large local fields and mixed hybridization states. New boro-carbon materials were synthesized by high temperature plasma, pyrolysis of boron-carbon precursor molecules, and post-synthesis modification of carbons. Hydrogen uptake has been assessed, and several promising leads have been identified, with the requirement to simultaneously optimize total surface area while maintaining the enhanced hydrogen binding energies already demonstrated.
Contributing Partner: UNT Libraries Government Documents Department
Final Technical Report "Energy Partitioning in Elementary Chemical Reactions"

Final Technical Report "Energy Partitioning in Elementary Chemical Reactions"

Date: October 3, 2005
Creator: (deceased), Richard Bersohn & investigator), James J. Valentini (reporting
Description: This is the final technical report of the subject grant. It describes the scientific results obtained during the reporting period. These results are focused on the reactions of atomic oxygen with terminal alkenes. We have studied the production of vinoxy in these reactions. We have characterized the energy disposal in the reactions and have elaborated the reaction mechanism.
Contributing Partner: UNT Libraries Government Documents Department
Acute Toxicity and Bioaccumulation of Chloroform to Four Species of Freshwater Fish

Acute Toxicity and Bioaccumulation of Chloroform to Four Species of Freshwater Fish

Date: August 1, 1980
Creator: ,
Description: Acute toxicity of chloroform to four species of freshwater fish was studied in flow-through 96-hr toxicity tests. Chloroform is toxic to fish in the tens of parts per million, a concentration well above that which would be expected to be produced under normal power plant chlorination conditions. Investigations of acute toxicity of chloroform and the bioaccumulation of chlorinated compounds in tissues of fish revealed differences in tolerance levels and tissue accumulations. Mean 96-hr LC{sub 50}s for chloroform were 18 ppm for rainbow trout and bluegill, 51 ppm for largemouth bass and 75 ppm for channel catfish. Mortalities of bluegill and largemouth bass occurred during the first 4 hr of exposure while rainbow trout and channel catfish showed initial tolerance and mortalities occurred during the latter half of the 96-hr exposure. Rainbow trout had the highest level of chloroform tissue accumulation, 7 {micro}g/g tissue, catfish the second highest, 4 {micro}g/g tissue, followed by bluegill and largemouth bass which each accumulated about 3 {micro}g/g tissue. Accumulation of chloroform was less than one order of magnitude above water concentrations for all species.
Contributing Partner: UNT Libraries Government Documents Department
Chronic Effects of Chlorination By-Products on Rainbow Trout, Salmo gairdneri

Chronic Effects of Chlorination By-Products on Rainbow Trout, Salmo gairdneri

Date: November 1, 1980
Creator: ,
Description: Rainbow trout were exposed to by-products of low-level water chlorination for several months in two separate experiments. In each test 2400 juvenile rainbow trout (Salmo gairdneri) were reared under chlorination conditions designed to simulate those of a power plant. Objectives were to determine effects of long term exposure to provide samples for tissue analysis of chlorination byroducts. No significant difference in fish condition factors was found between the test groups and controls, neither was there an apparent effect on mortality. Background levels of chloroform were found in all fish, but there was no evidence of an increased amount of chloroform or other chlorination by-products resulting from chronic low level exposure to chlorination by-products.
Contributing Partner: UNT Libraries Government Documents Department
Estimated Incremental Costs for NRC Licensees to Implement the US/IAEA Safeguards Agreement

Estimated Incremental Costs for NRC Licensees to Implement the US/IAEA Safeguards Agreement

Date: July 19, 1979
Creator: ,
Description: At the request of the U.S. Nuclear Regulatory Commission (NRC), the Pacific Northwest Laboratory (PNL), operated by Battelle Memorial Institute for the Department of Energy, conducted a brief study to identify the incremental cost for implementing the US/IAEA safeguards treaty agreement. The purpose of the study was to develop an estimate of the cost impact to eligible NRC licensees for complying with the proposed Part 75 of Title 10, Code of Federal Regulations (10 CFR 75), the rule which will implement the treaty. The study was conducted using cost estimates from several eligible licensees who will be affected by the agreement and from cost analyses by PNL staff. A survey instrument was developed and sent to 25 NRC licensees, some of whom had more than one licensed facility. Their responses were obtained primarily by telephone after they had reviewed the survey insttument and a list of assumptions. The primary information received from the licensees was the incremental cost to their particular facility in the form of manpower, dollars or both. In summary, the one-time cost to all eligible NRC licensees to implement 10 CFR 75 is estimated by PNL to range from $1.9 to $7.2 millions. The annual cost to ...
Contributing Partner: UNT Libraries Government Documents Department
Mathematical Simulation of Sediment and Radionuclide Transport in Surface Waters

Mathematical Simulation of Sediment and Radionuclide Transport in Surface Waters

Date: April 1, 1981
Creator: ,
Description: The study objective of "The Mathematical Simulation of Sediment and Radionuclide Transport in Surface Waters" is to synthesize and test radionuclide transport models capable of realistically assessing radionuclide transport in various types of surface water bodies by including the sediment-radionuclide interactions. These interactions include radionuclide adsorption by sediment; desorption from sediment into water; and transport, deposition, and resuspension of sorbed radionuclides controlled by the sediment movements. During FY-1979, the modification of sediment and contaminant (radionuclide) transport model, FETRA, was completed to make it applicable to coastal waters. The model is an unsteady, two-dimensional (longitudinal and lateral) model that consists of three submodels (for sediment, dissolved-contaminant, and particulate-contaminant transport), coupled to include the sediment-contaminant interactions. In estuaries, flow phenomena and consequent sediment and radionuclide migration are often three-dimensional in nature mainly because of nonuniform channel cross-sections, salinity intrusion, and lateral-flow circulation. Thus, an unsteady, three-dimensional radionuclide transport model for estuaries is also being synthesized by combining and modifying a PNL unsteady hydrothermal model and FETRA. These two radionuclide transport models for coastal waters and estuaries will be applied to actual sites to examine the validity of the codes.
Contributing Partner: UNT Libraries Government Documents Department
A Measurement Control Program for Nuclear Material Accounting

A Measurement Control Program for Nuclear Material Accounting

Date: June 1, 1980
Creator: ,
Description: A measurement control program for nuclear material accounting monitors and controls the quality of the measurements of special nuclear material that are involved in material balances. The quality is monitored by collecting data from which the current precision and accuracy of measurements can be evaluated. The quality is controlled by evaluations, reviews, and other administrative measures for control of selection or design of facilities. equipment and measurement methods and the training and qualification of personnel who perform SNM measurements. This report describes the most important elements of a program by which management can monitor and control measurement quality.
Contributing Partner: UNT Libraries Government Documents Department
Measurement of the D*(2010)+ Natural Line Width and the D*(2010)+ - D0 Mass Difference

Measurement of the D*(2010)+ Natural Line Width and the D*(2010)+ - D0 Mass Difference

Date: May 28, 2013
Creator: ,
Description: Abstract Not Provided
Contributing Partner: UNT Libraries Government Documents Department
Measurement of the Mass of the D0 Meson

Measurement of the Mass of the D0 Meson

Date: September 5, 2013
Creator: ,
Description: Abstract Not Provided
Contributing Partner: UNT Libraries Government Documents Department