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  • 11
    Electronic Resource
    Electronic Resource
    Springer
    Neurosurgical review 12 (1989), S. 133-140 
    ISSN: 1437-2320
    Keywords: Brain edema ; brain swelling ; CT-densitometry ; head injury ; hyperaemia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Two-hundred and fifty-two computerized tomography (CT) scans of 107 patients with head injuries were analyzed. The most frequent consequence of trauma was a diffuse swelling of the brain in 91% of the cases. The severity of brain swelling and its course can be estimated by the compression of (or absence of) the intracranial cerebrospinal fluid space. These observations may be of prognostic value as well. By measurement of theHounsfield units (HU) in 52 cases the blood or water content in the brain tissues was assessed. An increase in blood content of the tissues (hyperaemia) can account for an increase in Hounsfield values. A decrease in HU suggests brain edema. The density measurements showed that in the first hours and days following head injury, the diffuse brain swelling was caused by severe cerebrovascular congestion in the majority (53%) of the cases. Immediate brain edema without a preceeding hyperaemic phase occurs less frequently (32%). Between the 1st and 4th day after injury, edema started to prevail, and between the 5th and 8th day the edematous type of brain swelling was present almost exclusively.
    Type of Medium: Electronic Resource
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  • 12
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 181 (1985), S. 408-411 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Es wird eine Methode zur Bestimmung von Kohlenhydraten mit Hilfe der Ionenaustauscherchromatographie der Boratkomplexe mit 2 Puffersystemen beschrieben, die die Analyse der Kohlenhydrate in Milch und Milchprodukten im Zusammenhang mit der Milcherhitzung ermöglicht. Die durch Erhitzung gebildeten Disaccharide Lactulose und Epilactose können selbst in Gegenwart von großen Mengen Lactose einwandfrei getrennt und quantitativ bestimmt werden (Pufferprogramm I). Durch Einführung eines zweiten Pufferprogrammes gelingt es außerdem, Lactulose auch bei Vorliegen von Fructose zu trennen und quantitativ zu bestimmen. Außerdem können andere Kohlenhydrate wie Ribose, Mannose, Galaktose und Glucose gleichzeitig bestimmt werden.
    Notes: Summary A method is described for the analysis of carbohydrates in milk and milk products which develop during heat treatment. It is based on the separation of their borate complexes by anion exchange chromatography using two optimized buffer systems. A reliable qualitative and quantitative determination of the disaccharides lactulose and epilactose is possible even in the presence of large amounts of lactose (buffer system 1). Using the second buffer system lactulose can also be detected in the presence of fructose. In addition other relevant carbohydrate components like ribose, mannose, galactose and glucose can be determined simultaneously.
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Springer
    European food research and technology 186 (1988), S. 99-107 
    ISSN: 1438-2385
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Zusammenfassung Ganglioside sind Sialinsäure enthaltende Lipide (N-Acetylneuraminsäure), die als funktionell wichtige Bausteine besonders in Membranen anzutreffen sind. Sie spielen eine wichtige Rolle in vielen elementaren physiologischen Vorgängen in tierischem Gewebe. Um ihre weite Bedeutung näher zu untersuchen bzw. die komplexe Struktur zu charakterisieren, sind aufwendige analytische Verfahren notwendig, die in dieser kurzen Übersicht dargestellt werden, d. h. Extraktion, Reinigung und Anreicherung Bowie chromatographische Methoden. In der Milch (Milchfettkügelchenmembran) wurden bisher drei Ganglioside in ihrer Struktur aufgeklärt. Sie werden bei der Verbutterung in der Buttermilch angereichert und könnten so als wichtiges analytisches Hilfsmittel dienen.
    Notes: Abstract Gangliosides are sialic acid containing lipid compounds of a very complex nature, which are involved in many physiological processes. Gangliosides are very important constituents of membrane material in animal tissue, where they occur at very low concentrations. Improved analytical procedures are therefore required to study their behaviour, their role in living systems and their isolation for further investigations. In this paper, all analytical methods which may be important in the analysis of gangliosides are summarized and discussed. These include extraction, purification, enrichment and chromatographic procedures. In bovine milk, three gangliosides of known structure are present. Their isolation, structure and analytical importance (buttermilk) are also reported.
    Type of Medium: Electronic Resource
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  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 373 (1988), S. 377-382 
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 15
    Electronic Resource
    Electronic Resource
    Springer
    GeoJournal 18 (1989), S. 20-20 
    ISSN: 1572-9893
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography
    Type of Medium: Electronic Resource
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  • 16
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 37 (1988), S. 83-100 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé Hellman et Schwalbe ont établi, dans un travail précédent, que, lorsque la ténacité à la rupture est exprimée par δ5, un critère de COD, les courbes R présentent un undépendance plus sérieuse par rapport à la géométrie que lorsque l'on retient J comme critère de ténacité. Ceci a été démontré pour trois matériaux, trois géométries et des tailles relatives de fissure variables. L'objet de la présente étude est de réévaluer ces mêmes données en utilisant comme critère de ténacité un paramètre J modifié (J M), et de démontrer que des courbes R d'une indépendance comparable par rapport à la géométrie peuvent être tracées. On développe un raisonnement établissant la compatibilité entre les critères de ténacité δ5 et J M.
    Notes: Abstract Previous work of Hellmann and Schwalbe [13] had shown that when fracture toughness is expressed in terms of δ5 (a crack opening displacement parameter), R curves have more consistent geometry independence than when the toughness parameter is J. This was shown for three materials, three geometries, and for variable relative crack sizes. The objective of the present study was to re-evaluate these same data using modified J (J M ) as the toughness criterion and to show that similar geometry independent R curves could be developed. A rationale for the consistency between δ5 and J M toughness criteria is developed.
    Type of Medium: Electronic Resource
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