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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron 25 (1969), S. 287-293 
    ISSN: 0040-4020
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron Letters 8 (1967), S. 3877-3880 
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 99 (1987), S. 151-167 
    ISSN: 1437-1596
    Keywords: Air embolism or putrefaction ; Gas analysis, in air embolism ; Luftembolie oder Fäulnis ; Gasanalyse, bei Luftembolie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Bei 111 Sektionen wurde Gas aus dem Herzen entnommen. Die Volumina wurden gemessen, anschließend wurden die Proben gaschromatographisch analysiert. In 70 Fällen enthielt das Gasgemisch H2, so daß eindeutig Fäulnis vorlag. In 36 der verbleibenden Fälle war nach kritischer Prüfung von einer Luftembolie auszugehen. Lufteintrittspforten waren in dieser Gruppe mit wenigen Ausnahmen schwere Schädeltraumata oder eröffnete Venen des Vorderhalses und der oberen Thoraxapertur. Als gute gasanalytische Kriterien einer Luftembolie erwiesen sich CO2-Konzentrationen unter 15%, N2-Konzentrationen über 70% und ein Quotient CO2/N2 unter 0,2. Dagegen ergaben die gemessenen Volumina, die O2-Konzentrationen und die Quotienten CO2/O2 keine scharfe Diskriminierung zwischen Luftembolie und Fäulnis. Das bei Luftembolie gewonnene Gas weist im Vergleich zu atmosphärischer Luft, offenbar unabhängig von Fäulnisveränderungen, erniedrigte O2- und erhöhte CO2-Konzentrationen auf. Wir sehen hierin die Folge eines Gasaustausches zwischen dem venösen Blut des rechten Herzens und der eingedrungenen Luft; das Ausmaß der O2- und CO2-Konzentrationsänderungen ist durch agonale Hypoxie und Hyperkapnie erklärbar.
    Notes: Summary Gas was detected in the hearts of 111 necropsy cases. The gas was quantified and then analyzed by gas chromatography. In 70 cases H2, a clear marker of putrefaction, could be identified in the samples. After critical consideration, air embolism was accepted in 36 of the remaining cases. In nearly all instances, severe skull trauma or stab wounds to the neck or clavicular region gave rise to the air embolism. When the gas analysis data were compared, clear-cut differences were found between the two groups of putrefaction and air embolism. CO2 concentrations below 15%, N2 concentrations above 70%, and a CO2/N2 ratio below 0.2 proved to be good criteria to determine an air embolism. However, gas volumes, O2 concentrations, and CO2/O2 ratios largely overlapped in the two groups. Air embolism samples consistently had lower O2 concentrations and higher CO2 concentrations than atmospheric air, and this was evidently independent from incipient putrefaction. We suggest that these deviations result from a gas exchange between the venous blood and the embolized air volume taking place in the right heart ventricle. The dimensions of the concentration shifts may be understood from severe agonal hypoxia and hyperkapnia.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 5 (1966), S. 6-15 
    ISSN: 0570-0833
    Keywords: Radical reactions ; Free radicals ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The paper describes the application and limitations of magnetic methods to the problems of free-radical chemistry (detection and quantitative investigation of the free-radical state, relationships between structure and free-radical formation, “distribution” of the unpaired electron, detection of mesomeric C, O, N, P, As, and Sn radicals, g-factors, triplet states, and hyperfine structure). The problem of the diradical is described, and the paper closes with a discussion of the “Selwood effect”.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 78 (1966), S. 98-107 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Anwendung und Grenzen magnetischer Methoden auf Probleme der Radikalchemie (Nachweis des Radikalzustandes, seine quantitative Erfassung, Zusammenhänge zwischen Konstitution und Radikalbildung, „Verteilung“ des Einzelelektrons, Nachweis mesomerer C,O,N,P,As,Sn-Radikale, g-Faktoren, Triplettzustände und Hyperfeinstruktur) werden beschrieben. Die Problematik der Biradikale wird aufgezeigt. Eine Diskussion des „Selwood-Effektes“ beschließt die Arbeit.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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