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INTERFACIAL AREA BY ALPHA OR BETA DOSIMETRY--A FEASIBILITY STUDY

Description: Oak Ridge National Lab., Tenn. A survey of chemical radiolysis methods of measuring interfacial area by means of short range particle irradiation of a liquid interface indicated the most promising system was an aqueous solution of polonium210 in contact with a benzene solution of tetrachloroethylene. Experimentally, the rate of chloride liberation was quite low, and when measured by activation analysis, the specific rate of chloride production was subject to a very large relative error. (auth)
Date: September 1, 1956
Creator: Morgan, D.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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SPECTROPHOTOMETRIC DETERMINATION OF ALUMINUM IN PLUTONIUM-ALUMINUM ALLOYS

Description: The method described involves the spectrophotometric determination of aluminum in plutoniumaluminum alloys following the separation of the excess plutonium and small amounts of iron from the aluminum by extraction of the cupferrate into chloroform. The aluminum concentration is determined on a Beckman Model DU spectrophotometer by measuring the optical density of the aluminum 8-hydroxyquinolate in chloroform at 385 millimicrons (m mu ). A correction is made for the small amount of plutonium whi… more
Date: November 1, 1955
Creator: Cleveland, J.M. Jr. & Nance, P.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Correlation of Chemisorption and Electronic Effects for Metal Oxide Interfaces: Transducing Principles for Temperature Programmed Gas Microsensors

Description: The spectrum of chemical monitoring problems faced by the Department of Energy at its hazardous waste sites is formidable. It is likely that a variety of existing types of instrumentation will be applied in the years ahead, with varying degrees of practicality and success. A tremendous impact could be realized, however, if instrumental methods could be supplemented by a low-cost, reliable sensing technology for continuous monitoring of a range of species, including, for example, volatile organi… more
Date: January 3, 2002
Creator: Semancik, Dr. Steve
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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PRESSURE DROP EXPERIMENTS OF THE TITLE II FUEL ASSEMBLY FOR THE EXPERIMENTAL GAS COOLED REACTOR. SECTION III OF THE FUEL ASSEMBLY HEAT TRANSFER AND CHANNEL PRESSURE DROP EXPERIMENTS FOR THE EGCR RESEARCH AND DEVELOPMENT PROGRAM

Description: Data are presented on the pressure drop tests of the Title II fuel assembly design modification and refinements as occurred during the Title II test phase. All tests were conducted with the chosen 3.000-in. ID fuel assembly sleeve and with the outer six tubes of the seven-tabe cluster located on a 2.000- in. dia bolt circle. The tests included two designs of spider support pieces and three designs of midlength spacers. The pressure loss data are presented in the form of velocity head coefficien… more
Date: October 1, 1960
Creator: Crandall, W.H. & Higgins, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Radiochemical Determination of Americium in the Presence of Plutonium in Urine

Description: Americium is precipitated with bismuth phosphate from a nitric acid- digested urine sample. The bismuth phosphate is wet-ashed, dissolved in 6N--HCl, and the americium is precipitated with lamthanum fluoride. The lanthanum fluoride is metathesized to the hydroxide, and the precipitate is dissolved in 2N- nitric acid. Removal of concurrently metabolized plutonium is accomplished by liquid-liquid extraction of the nitric acid soiution with 0.1-M di(2- ethylhexyl)phosphoric acid (D2EIIPA) in chlor… more
Date: January 1, 1961
Creator: Bokowski, D.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Index of Refraction and Dispersion of Several Gases in Cerenkov Counter Use

Description: Measurements of index of refraction as a function of gas pressure for carbon dioxide, ethane, methane, sulfur hexafluoride, Freon 13, Freon 14, and Freon 23, which are suitable for Cerenkov Counter use, are reported. These gases do not react with Al or Ag mirror coatings, or other materials used in such counters, and have indices of refraction that are large enough to permit the use of these gases at reasonable pressures. Methane and ethane are both toxic and highly explosive; the remainder of … more
Date: December 1, 1961
Creator: Niederer, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Study of the Flow of Saturated Freon-11 Through Apertures and Short Tubes

Description: An experimental study on the discharge rates of saturated and subcooled Freon-11 through apertures and short tubes is reported. The experiment covered a range of modified cavitation numbers between 0 and 500, length-to-diameter ratios of small-diameter tubes between 2 and 55, and sharp-edge apertures of nine different geometric configurations. It was found that below the modified cavitation number of 10, the iluid exhibits completely metastable singlephase ilow. When the modified cavitation num… more
Date: January 1, 1963
Creator: Fauske, H. K. & Min, T. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Pilot Plant for the Reduction of Uranium Hexafluoride to Uranium Tetrafluoride with Trichloroethylene

Description: Pilot plant experiments are described in which trichloroethylene was used for the reduction of uranium hexafluoride to uranium tetrafluoride. After unsatisfactory preliminary results with liquid phase reduction, satisfactory results were obtained with a vapor phase reduction system. It was found that vapor phase reduction at approximately 450 deg F, produced a low density product which contained only small quantities of uranium(VI); sintering the uranium tetrafluoride in a hydrogen fluoride atm… more
Date: May 31, 1956
Creator: Baker, J. E.; Klaus, H. V.; Schmidt, R. A. & Smiley, S. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Spectrophotometric Determination of Copper in Yttrium Metal With Neocuproine

Description: The neocuproine colorimetric method was applied to the determination of copper in yttrium metal. From 5 to 80 - g of copper was determined in the presence of as much as 5OO mg of yttrium with a coefficient of variation of 2%. Copper was reduced to copper (I) with hydroxylamine and complexed with neocuproine (2,9-dimethyl-1,10-phenanthroline). The colored complex was extracted into chloroform and its absorbance measured, after dilution with ethanol, at 457 m - . (auth)
Date: April 21, 1959
Creator: White, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Hydrogen Bonding in $Beta$-Nitro Alcohols. Iii. Pyridine Complexes

Description: BETA -Nitro alcohols form stable 1:1 complexes with pyridine, examples of which were prepared. In solvents such as dichloromethane and carbon tetrachloride the complexes partially dissociate into their components. The dissociation constants for the equilibria were determined by infrared methods and may be used as a measure of the strength of the complex hydrogen bond. The dissociation constants decrease with increasing number of BETA -nitro groups. Some reactions of the pyridine complexes are d… more
Date: January 1, 1963
Creator: Ungnade, H. E.; Loughran, E. D. & Kissinger, L. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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ULTRAVIOLET SPECTROPHOTOMETRIC DETERMINATION OF OSMIUM TETROXIDE IN CHCl{sub 3}

Description: A method was developed for the determination of osmium by measuring the absorbancy of osmium tetroxide in CHCl/sub 3/. The osmium is first oxidized to the octavalent state and the osmium tetroxide which is formed is extracted selectively with CHCl/sub 3/. The ultraviolet absorption spectrum of OsO/sub 4/ in CHCl/sub 3/ has a series of absorption bands with peak absorbancies at 282, 289. 297, 304, and 312 m mu , and molar absorbancy indices of 1870. 1760, 1640, 1400, and 1000, respectively. For … more
Date: June 1, 1959
Creator: Goldstein, G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of the Continuous Method for the Reduction of Uranium Hexafluoride With Hydrogen-Process Development. Hot Wall Reactor

Description: >A continuous process for the reduction of uranium hexafluoride to uranium tetrafluoride was developed and proved on a pilot-plant scale. Complete conversion to uranium tetrafluoride was realized by contacting gaseous uranium hexafluoride with hydrogen in a heated, vertical, open-tube reactor. The purity and density of the solid product met metal grade uranium tetrafluoride specifications. Some difficulty with the accumulation of fused uranium fluorides in the tower was encountered, however,… more
Date: June 27, 1958
Creator: Smiley, S. H. & Brater, D. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Determination of Chlorine in Polyurethane Plastic

Description: Chlorine may be determined in polyurethane by gravimetric or spectrophotometric techniques. The sample is burned in a special combustion tube with two oxygen inlets, the products of combustion are absorbed in a solution containing sodium hydroxide and hydrogen peroxide, and the chlorine is measured either gravimetrically as silver chloride or spectrophotometrically using mercuric thiocyanate and ferric perchlorate. Eighteen determinations of cblorine in known solutions of sodium chloroacetate o… more
Date: October 1, 1959
Creator: Henicksman, A. L.; VanKooten, E. H.; Gardner, R. D. & Ashley, W. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Removal of Technetium, Carbon Tetrachloride, and Metals from DOE Properties - Final Report

Description: This research is a three year project involving close collaboration between chemists at Pennsylvania State University and materials scientists at Pacific Northwest National Laboratory (PNNL). The goal of the project is the development and characterization of supported reducing agents, and solid waste forms derived from them, which will be effective in remediation of aqueous wastes. The work follows the recent discovery that zero-valent metals, such as iron, are effective decontaminants for wast… more
Date: September 1, 2000
Creator: Mallouk, Thomas E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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