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Estimation of Small Quantities of Uranium in Thorium

Description: Abstract: "Estimation of the intensity of the uranyl fluorescence furnishes a method for the determination of quantities of uranium as low as one-half microgram of uranium in one-half illilitor of glassy phosphoric acid. The test has been used to detect directly three parts of uranium in one million parts of thorium" (p. 1).
Date: 1946
Creator: Weissman, S. I. & Duffield, R. B.
Item Type: Refine your search to only Report
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Factors Affecting the Precipitation of Uranium Peroxide

Description: Abstract: "This is a compilation of the data on uranium peroxide precipitations appearing in several reports. The solubility product is measured. The effect of many individual ions on the hydrogen peroxide decomposition rate and the complexing of uranium is demonstrated. Studies on plant and other highly contaminated solutions are not included."
Date: July 8, 1946
Creator: Mogg, D. W. & Larson, C. E.
Item Type: Refine your search to only Report
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Fluorescence Analysis for Uranium

Description: From abstract: "An adaptation of a colorimeter for the rapid estimation of small amounts of uranium to ± 5% by fluorescence of a sodium fluoride bead or fluoride-carbonate melt is described. Solutions containing from 0.1 to 1000 micrograms per milliliter may be tested directly. The limit of visual detection on a 20 mg. bead is about 0.0003 microgram of uranium. A periodic chart of interferences is presented. The strangest interferences center around the latter parts of each transition series o… more
Date: 1946
Creator: Zebroski, E. L.; Newton, T. W. (Thomas William), 1923- & Ripple, F. T.
Item Type: Refine your search to only Report
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Fractionation of Fission Products and Heavy Elements by Volatilization Methods

Description: Technical report describing the attempt to separate the long lived fission product oxides by volatilization methods. A fractionization crucible was used. The fractionations give a fair idea of the relative volatilities of the longer lived fission products and also of the degrees of separation of the plutonium oxide or oxides from the fission products.
Date: August 27, 1946
Creator: Erway, N. D. & Simpson, O. C.
Item Type: Refine your search to only Report
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The Geochemistry of Columbium and Tantalum

Description: From abstract: "This is a review, with annotated bibliography, of the mode of occurrence of the elements columbium and tantalum. It is not a list of specific ore deposits, but a summary of the types of minerals and rocks in which these elements have been reported to occur. In addition, the unpublished spectrographic studies of the Geological Survey are summarized, best sources for columbium and tantalum are indicated, and suggestions are made for further investigation."
Date: June 1946
Creator: Fleischer, Michael, 1908-1998 & Harder, James O.
Item Type: Refine your search to only Report
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Geochemistry of Germanium

Description: From abstract: "This is a review, with annotated bibliography, of the mode of occurrence of the element germanium. It is not a list of specific ore deposits, but a summary of the types of minerals and rocks in which germanium has been reported to occur. Best sources for germanium are indicated, based on the data in the literature and on the unpublished spectrographic studies of the Geological Survey on mill and smelter products. Suggestions are made for further investigations."
Date: 1946
Creator: Fleischer, Michael, 1908-1998 & Harder, James O.
Item Type: Refine your search to only Report
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The Geochemistry of Indium

Description: Abstract" This is a review, with annotated bibliography, of the mode of occurrence of the element indium. It is not a list of specific ore deposits, but a summary of the types of minerals and rocks in which indium has been reported to occur. In addition, the unpublished spectrographic studies of the Geological Survey on mill and smelter products are summarized, best sources of indium are indicated, and suggestions are made for further investigations. Indium has been found to occur most abund… more
Date: June 1946
Creator: Fleischer, Michael, 1908-1998 & Harder, James Otto.
Item Type: Refine your search to only Report
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Geology and Ore Resources of the Uranium-Vanadium Depositional Province of the Colorado Plateau Region

Description: From introduction and acknowledgements: This report is written to supplement and complete the record contained in some fifty district and special reports already submitted, and duplication of material in district reports has been studiously avoided. The data herein contained are largely of a regional type, inclusion of which was not wholly appropriate to the district reports.
Date: 1946
Creator: Webber, Benjamin N.
Item Type: Refine your search to only Report
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Half-Life of Polonium

Description: Abstract: "The half-life of polonium has been measured by a calorimetric method using samples several thousand times larger than have been previously available. The value is found to be 138.3 +/- 0.1% days."
Date: September 9, 1946
Creator: Beamer, William H. & Easton, William E.
Item Type: Refine your search to only Report
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High Temperature Refractories for Uranium

Description: Abstract: "Experiments are described wherein uranium metal was heated in ten different refractory materials under conditions approximating those of the uranium J. The refractory crucibles containing the uranium were placed in graphite crucibles and heated in vacuum for four hours at 1800-1850 C by means of an induction furnace. MgO, W, and TiH were found to be unacceptable containers for uranium at these temperatures. BeO, ThO2 and Un showed some reaction with the uranium, whereas UO2, ZrH, CeS… more
Date: June 3, 1946
Creator: Hoff, R. L.; Sausville, J. W. & Larson, Clarence E.
Item Type: Refine your search to only Report
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Identification and Characterization of Shielded Isotopes in Uranium Fission

Description: Abstract: "The first shielded isotope, 34th Br-82 has been isolated in fission. Its fission yield is about 3 x 10-(-5)%. This is a direct measurement of the yield of a primary fission product and gives direct information as to the distribution of nuclear charge among primary fission fragments of given mass numbers as discussed by Glendenin and Coryell."
Date: November 27, 1946
Creator: Feldman, Milton H.
Item Type: Refine your search to only Report
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Infrared Spectrum of Benzene

Description: From abstract: "Benzene shows weak absorption bands in the 3 aliphatic C-Z region of the spectrum. The peaks of these bands are at 3.439, 3.459, 3.504, and 3.545."
Date: 1946
Creator: Flanagan, John; Gardner, R.; McKee, Frances & Schlegel, Richard, 1913-
Item Type: Refine your search to only Report
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Inorganic Separations Using Ion Exchange

Description: From summary: "In previous project work, dilute mixtures of inorganic cations in aqueous solution have been concentrated by adsorption of the cations on a synthetic resin and they have been fractionated by selective desorption of the cations from the resin. In this report..the general procedure used in chemical separation, the equipment used, and the theory of the exchange equilibria and of the reaction rates are presented."
Date: August 29, 1946
Creator: Peterson, H. D.
Item Type: Refine your search to only Report
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Isotopic Examination of Tantalum

Description: Introduction: "The ionization region in the Nier mass spectrometer is customarily constructed of copper. Various other metals were tried for this purpose; among them tantalum and molybdenum, with both metals it was found that a spectrum of the fluoride of the metal appeared when uranium hexafluoride was admitted. It was thus possible to produce tantalum fluoride with comparative ease and to make a critical examination of the mass spectrum to set an upper limit of abundance of tantalum isotopes.… more
Date: January 18, 1946
Creator: Cameron, Alan E. & White, J. R.
Item Type: Refine your search to only Report
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A Mass Spectrograph for the Analysis of Fission Product Mixtures

Description: From introduction: "The analysis of mixtures of fission products with a mass spectrograph offers certain advantages. A chemical separation of the fission products found in the solution at Hanford is not necessary with the mass spectrograph technique. A sample of the mixtures can be placed on the sample holder and then the sample holder is mounted in the mass spectrograph. This reduces the amount of handling of the active solutions to one relatively simple and short operation. The health hazards… more
Date: June 12, 1946
Creator: Lewis, Lloyd G., 1917-
Item Type: Refine your search to only Report
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