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  • 1985-1989  (4)
  • 1965-1969  (1)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 27 (1986), S. 442-446 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: An explicit basis is constructed for the symmetric irreducible representation (irrep) of SU(9)&supuline;SO(9)&supuline;SO(5)×SU1(2)×SU2(2). It is also indicated how good angular momentum states can be constructed. The techniques used are based on the well-known tensor algebra for the infinitesimal generators of simple Lie groups.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 1505-1507 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of radioanalytical and nuclear chemistry 90 (1985), S. 239-245 
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The present study explores the feasibility of the determination of phosphorus at the extreme trace levels in high-purity silicon by radioreagent method. After silicon dissolution with hydrofluoric and nitric acids and matrix volatilization, 12-molybdophosphoric acid (12-MPA) is formed by the addition of the radioreagent,99MoO 4 2− , in nitric acid medium and then extracted into isobutyl acetate. By plotting the phosphorus content against the radioactivity of99Mo in the organic phase, a linear relationship persisting down to 5 ng is obtained. Special effort has been made to the elimination of the unreacted99MoO 4 2− reagent and the optimal control of phosphorus blank introduced through the multistage analytical procedure in order to ensure reliable determination of phosphorus at the ppb level.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 6 (1968), S. 503-516 
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Description / Table of Contents: Sommaire Une cellule électrochimique implantable en platine-alumine peut fournir une puissance électrique d’environ 50–75 μW. Les implantations ont été pratiquées sur 12 lapins pour des périodes allant jusqu’à 200 jours. L’intensité de la réaction initiale du tissue et l’accumulation des produits d’oxydation de l’alumine insolubles apparaissent être les facteurs limitant la puissance utile disponible. Ces données, ainsi que la faible puissance requise par les dispositifs électroniques implantés (pacemakers, radio-sondes, etc.) laissent penser que l’on pourra utiliser ces types d’électrodes comme source de puissance de longue durée.
    Abstract: Zusammenfassung Etwa 50 bis 75 μW (Mikrowatt) elektrischer Leistung können von einer implantierbaren elektrochemischen Platin-Aluminium-Zelle abgeleitet werden. Bei Kaninchen wurden sie bis zu 200 Tagen Dauer implantiert. Das Ausmaß der anfänglichen Gewebsreaktion und der Ansammlung unlöslicher Aluminiumoxydationsprodukte scheinen die Nutzleistung zu begrenzen. Diese Angaben und der niedrige Strombedarf implantierbarer elektronischer Geräte (Schrittmacher, Telemetrie usw.) lassen eine nutzbringende Anwendung dieser Elektrodentypen als Dauerstromquellen erwarten.
    Notes: Abstract Approximately 50–75 μW (microwatts) of electrical power can be obtained from an implantable platinum-black aluminum electrochemical cell. The implantations have been conducted in twelve rabbits for periods up to 200 days. The intensity of the initial tissue reaction and accumulation of insoluble aluminum oxidation products appear to be the factors limiting useful power available. These data, together with the low power requirement of implantable electronic devices (pacemakers, telemeters, etc.), suggest the feasibility of using these types of electrodes as a long term power source.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Annals of biomedical engineering 16 (1988), S. 111-121 
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Type of Medium: Electronic Resource
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