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  • 1
    ISSN: 1432-1920
    Keywords: Cavernous sinus ; Paracavernous cranial nerves ; Microdissection ; Computed tomography ; Plain craniograms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have evaluated the anatomical structure of cavernous sinuses in parasellar blocks obtained from adult cadavers to gain clinically useful information. Ten microdissectional studies of parasellar blocks (20 sides of cavernous sinus) were carried out with special emphasis on the course of paracavernous cranial nerves (3rd to 6th). These were also examined on plain radiographs. Secondly, CT investigations of the cavernous sinuses (notably as to paracavernous cranial nerves) were undertaken in twenty clinical cases having presumed parasellar lesions and in three parasellar blocks from cadavers. The results from microdissectional studies and plain radiographs were as follows. It was found that the 3rd cranial nerve entered the lateral wall of the cavernous sinus close to the antero-inferior part of the posterior clinoid on lateral projection. The 4th cranial nerve, on the other hand, entered near the postero-inferior portion of the posterior clinoid on the same view. Variations in Parkinson's triangle were fairly often noted, although marked asymmetry was not seen in individual cases. From CT findings, it was found that a postenhanced, magnified direct coronal study was essential for identifying paracavernous cranial nerves more clearly. The 3rd and 5th cranial nerves were fairly well identified on axial and coronal projections. Careful radiological investigation including plain skull radiographs & CT seems to be of value for those who diagnose or treat parasellar lesions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 384 (1971), S. 191-192 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Consecutive reactions of artinite (MgCO3 ·Mg(OH)2 · 3 H2O) into magnesite (MgCO3) through hydromagnesite (4MgCO3 Mg(OH)2 · 4 H2O) were studied directly by an X-ray diffraction method under hydrothermal conditions using a micro autoclave results were discussed from the point of kinetic analysis. Both reactions from artinite to hydromagnesite and from hydromagnesite to magnesite were of first order with apparent activation energies 21 kcal/mol, 12 kcal/mol respectively.
    Notes: Die Umwandlungen des Artinits (MgCO3 · Mg(OH)2 · 3 H2O) in den Hydromagnesit (4 MgC03 · Mg(OH)2 · 4 H2O) und weiter in den Magnesit (MgCO3) wurden röntgenographisch unmittelbar unter hydrothermalen Bedingungen in einem Mikro-Autoklaven untersucht und kinetisch analysiert. Beide Reaktionen sind von erster Ordnung; Aktivierungsenergien: etwa. 21 kcal/Mol bzw. 12 kcal/Mol.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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