182 resultados para URANIUM 234
em University of Michigan
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F available only in microfiche.
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"40 CFR Part 61, national emission standards for hazardous air pollutants."
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Publication date stamped on cover.
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"March 1957."
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This literature search consisting of 240 references to unclassified reports and published literature has been taken from Nuclear Science Abstracts, the official abstract journal of the United States Atomic Energy Commission. The period covered is January 1951 through May 31, 1961. Abstracts for the references can be found by use of the NSA abstract numbers provided.
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Bibliographical footnotes.
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Work performed at the Argonne National Laboratory.
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Uranium is a ductile metal and cannot be comminuted to a fine powder by any mechanical means such as crushing, milling or grinding. Uranium, however, reacts readily with hydrogen and forms UH3, which is a fine powder of less than 400 mesh screen size. The factors controlling the rats of the hydride formation are: (a) The surface area of the metal; (b) the temperature at which the reaction takes place; (c) the pressure of hydrogen. In order to increase the reaction area, one has to hydride small metal pieces rather than a single mass. The hydrogen reacts with uranium metal at temperatures as low as 100 deg to 1500 deg, and the reaction rate becomes quite rapid at approximately 225 deg C. The hydrogen for this purpose has to be of high purity and any small amount of oxygen in hydrogen delays the start of the reaction.
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Work performed at the Argonne National Laboratory.
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Item 498-B-4
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"U.S. AEC Contract No. AT-(40-1)-1337".
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"Contract No. AT-(40-1)-2558"
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"Contract no. AT-(40-1)-2559."
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Work conducted at the Metals Research Laboratories, Union Carbide Metals Company, a Division of Union Carbide Corporation, under the United States Atomic Energy Commission contract no. AT-(40-1)-2559.
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Report year runs ends June 30.