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  • 1980-1984  (2)
  • 1975-1979  (3)
  • Chemistry  (5)
  • Adrenal Medulla
  • Catecholamines
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 15 (1984), S. 246-250 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Schallemissionsprüfung von Wärmetauschern des Reaktors SaphirDie Schallemissionsanalyse ist eine zerstörungsfreie Prüfmethode, die zur Untersuchung und Überwachung von Strukturen und druckführenden Komponenten verwendet wird. Das Ziel der Messung am 5 MW Forschungsreaktor Saphir war die Untersuchung und Auswertung der hohen Betriebsgeräusche in den Wärmetauschern des Kühl-systems.Die Ergebnisse zeigten, daß von den 9 Wärmetauschern, die in 3 Gruppen angeordnet sind, 5 Wärmetauscher ein hohes Betriebsgeräusch aufweisen. Die Ursache ist auf die Schwingung der Rohrbündel in Wärmetauschern beim Durchfluß des Pool-Wassers zurückzuführen. Die axiale Ortung bestätigte, daß die Geräusche von mehreren Quellen verursacht werden.
    Notes: The acoustic emission technique is a non-destructive testing method used for inspection and surveillance of structures and pressurized components. In particular, the purpose of the measurement on the 5 MW research reactor SAPHIR was to investigate and evaluate the abnormally high noise levels during operation of the heat exchangers of the cooling system.The results showed that 5 heat exchangers out of the total of 9 (assembled in 3 groups) were responsible for the higher noise level. This is probably due to some abnormal vibration of the tube bundles therein, caused by the through-flow of the pool water. Indeed, attempts of localizing the source showed that there must be several, distributed sources.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A low resolution, high sensitivity study has been made of the field desorption mass spectrum of glucagon, a 29 amino acid residue underivatized peptide. The highest molecular weight fragments observed, when spectra were taken under conditions which minimized surface reactions of the peptide on the emitter, were found to contain no more than 18 amino acid residues. The most probable fragmentation processes for ions larger than m/e 600 were the production of fragments containing 10, 11 or 12 amino acid residues.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The relationships between charge carrier transport and breakdown mechanism are summarily discussed and essential aspects of the electric breakdown in solid polymer insulating materials, particularly the effect of defects on the field strength at breakdown and the life time characteristics, are considered. The most important polymers applied in cable insulation are characterized with respect to their parameters and their application facilities are explained.
    Notes: Die Zusammenhänge zwischen Ladungstransport- und Durchschlagmechanismen werden zusammenfassend eingeschätzt und wesentliche Aspekte des elektrischen Durchschlagverhaltens polymerer Feststoffisolierungen dargestellt. Dabei wird besonders auf den Einfluß von Fehlstellen, auf die Durchschlagfeldstärke und die Lebensdauerkennlinien eingegangen. Die für den Einsatz in der Kabelisoliertechnik wichtigsten Polymere werden bezüglich ihrer Materialkenndaten charakterisiert und ihr Einsatz in der Kabeltechnik erläutert. Ferner werden die Kenndaten wichtiger polymerer Dielektrika und die Vorteile und Grenzen ihres Einsatzes als Kondensatorfolie zusammengefaßt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 11 (1976), S. 327-329 
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The field desorption temperatures of some compounds are determined by indirect heating of the emitters. The temperatures thus obtained are lower, compared with those determined by other authors. The reasons for this deviation are discussed.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 413 (1975), S. 94-96 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and X-ray Investigation of Zinc Azide TrihydrateZn(N3)2 · 3 H2O has been crystallized from an aqueous solution of zinc azide. Single crystals, which are unstable in air, were investigated my means of x-ray techniques. The lattice parameters are: a = 9.95 Å, b = 5.94 Å, c = 14,30 Å, β = 134.55°, N = 4. Indexd powder pattern are listed.
    Notes: Zn(N3)2 · 3 H2O wurde aus wäßriger Zinkazidlösung hergestellt. Die röntgenographische Untersuchung der an Luft unbeständigen Einkristalle ergab folgende Gitterkonstanten: a = 9,95 Å, b = 5,94 Å, c = 14,30 Å, β = 134,55°, N = 4. Indizierte Pulverdaten wurden tabelliert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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