Search Results - (Author, Cooperation:H. E. Newsom)

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  1. 1
    Staff View
    Publication Date:
    2013-06-01
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2013-12-11
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Extraterrestrial Environment/*chemistry ; Ferrosoferric Oxide/analysis/chemistry ; Geologic Sediments/analysis/*chemistry ; *Mars ; Minerals/analysis/*chemistry ; Silicates/analysis/chemistry ; Silicon Compounds/analysis/chemistry
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    S. M. McLennan ; R. B. Anderson ; J. F. Bell, 3rd ; J. C. Bridges ; F. Calef, 3rd ; J. L. Campbell ; B. C. Clark ; S. Clegg ; P. Conrad ; A. Cousin ; D. J. Des Marais ; G. Dromart ; M. D. Dyar ; L. A. Edgar ; B. L. Ehlmann ; C. Fabre ; O. Forni ; O. Gasnault ; R. Gellert ; S. Gordon ; J. A. Grant ; J. P. Grotzinger ; S. Gupta ; K. E. Herkenhoff ; J. A. Hurowitz ; P. L. King ; S. Le Mouelic ; L. A. Leshin ; R. Leveille ; K. W. Lewis ; N. Mangold ; S. Maurice ; D. W. Ming ; R. V. Morris ; M. Nachon ; H. E. Newsom ; A. M. Ollila ; G. M. Perrett ; M. S. Rice ; M. E. Schmidt ; S. P. Schwenzer ; K. Stack ; E. M. Stolper ; D. Y. Sumner ; A. H. Treiman ; S. VanBommel ; D. T. Vaniman ; A. Vasavada ; R. C. Wiens ; R. A. Yingst
    American Association for the Advancement of Science (AAAS)
    Published 2013
    Staff View
    Publication Date:
    2013-12-11
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Bays ; Calcium Sulfate/analysis/chemistry ; Chlorine/analysis/chemistry ; *Exobiology ; Extraterrestrial Environment/*chemistry ; Ferrosoferric Oxide/analysis/chemistry ; Geologic Sediments/*chemistry ; Halogens/analysis/chemistry ; Hydrogen-Ion Concentration ; Iron/analysis/chemistry ; Magnesium/analysis/chemistry ; *Mars ; Silicates/analysis/chemistry ; Water/chemistry
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Newsom, H. E. ; Palme, H.
    Springer
    Published 1984
    Staff View
    ISSN:
    1588-2780
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Energy, Environment Protection, Nuclear Power Engineering
    Notes:
    Abstract A metal-silicate extraction technique combined with neutron activation analysis has been developed to determine molybdenum in geological samples. The samples are equilibrated with Femetal powder at high temperatures. Molybdenum is completely extracted into the metal phase because of very reducing conditions in the furnace. The metal spherule is separated from the silicates, irradiated and dissolved in an acid solution. The molybdenum is precipitated as a sulfide and the precipitate is dissolved in aqua regia and counted on a Ge/Li/detector. The radiochemical yield is obtained by irradiation of the solution. The method avoids production of99Mo from induced fission of235U by performing the metal-silicate separation before irradiation. The precipitation step may be necessary to remove the high background from the decay of59Fe. Mo concentrations down to 15 ng/g have been obtained using this method.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses