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  • 1970-1974  (3)
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  • 1
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Pneumoencephalo-roulette tomography has been carried out in seven cases of primary pontine haemorrhage. An extensive mass lesion has been distinctly visualized in all cases during life without any severe complications. An intrapontine haematoma has been removed in a 47-year-old male, and a ventriculo-atrial shunt has been done in a 41-year-old male. These two surgically treated patients have survived primary pontine haemorrhage. Eight cases of successful surgical approach to intrapontine haematoma have been previously reported in the literature.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Alors que le signe du remplissage précoce des veines d'une région en cas d'infarctus du cerveau est bien connu, la notion de ce phénomène en cas d'hémorragie intracérébrale hypertensive est beaucoup moins répandue. Afin d'étudier la fréquence des anomalies du remplissage veineux dans les hémorragies du ganglion basal au coure de la phase aigue ainsi que les modifications survenant ensuite les suteurs ont fait une étude comparative de 45 cas de contrôle normaux et 45 cas d'hémorragie ihtracérébrale. On obtient les résultats suivants: dans les angiogrammes précoces (réalisés en moyenne 4 jours après l'hémorragie), le phénomène ne pouvait pas être affirmé avec l'augmentation du temps circulatoire cérébral après l'ictus. Cette tendance au remplissage veineux précoce semblait s'atténuer lors des examens ultérieurs pratiqués en moyenne un mois après le début de l'hémorragie, tant chez les malades opérés que chez les malades non-opérés, bien que dans aucun des groupes les signes n'avaient complètemnt disparu.
    Abstract: Zusammenfassung Es handelt sich um vergleichende Untersuchungen von 45 normalen Patienten und 45 Patienten mit einer intracerebralen Blutung. Bei ihnen bestand eine avaskuläre Raumforderung im Bereich der Stammganglien. Dabei zeigt es sich, daß die Füllung der Venen unterschiedlich ist und daß die frühe Venenfüllung bei einer cerebrovaskulären Läaion nur vorübergehend auftritt.
    Notes: Summary While the pattern of early filling of the regional veins in cerebral infarction is well documented, knowledge of the phenomenon in hypertensive intracerebral haemorrhage remains limited. In order to evaluate the occurrence of abnormalities of venous filling in basalganglionic haemorrhage during the acute stage as well as the changes occurring subsequently, a comparative study was made between 45 normal controls and 45 cases of intracerebral haemorrhage. The following results were obtained; in the initial angiograms (carried out on average 4 days after the haemorrhage), the phenomenon did not correlate significantly with the prolonged cerebral circulation time following the stroke. This tendency towards abnormal early venous filling was shown to be on the decline in the follow-up studies made on average one month after the onset of the haemorrhage in both the operated and non-operated groups, although in neither had the patterns yet returned to complete normality.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2234
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Störungsrechnung von Murrell, Randic und Williams für intermolekulare Wechselwirkung wurde in Verbindung mit der Annahme von lokalen ZDO zur Berechnung der Cycloaddition von Singulett-Methylen oder -Halogencarbenen an Olefine angewendet. Die Resultate, die über die CNDO/2-Ergebnisse für die isolierten Moleküle erhalten wurden, lassen die Rolle der einzelnen Energieanteile erkennen, die die Stereochemie der Reaktion beeinflussen. Die syn/anti-Stereoselektivität der Halogencarbene gegenüber cis-2-Buten wird durch die Coulomb-, Dispersions-, Charge-transfer- und Austausch-Wechselwirkung gemeinsam bestimmt. Auch die d-Orbitale von Chlor sind für den Charge transfer von Bedeutung.
    Notes: Abstract The perturbation theory of Murrell, Randić and Williams for intermolecular interaction has been combined with the assumption of local zero-differential overlaps. The theory has been applied to the cycloadditions of singlet methylene and halocarbenes toward olefins. The results, obtained by use of the CNDO/2 energies and wave functions for isolated molecules, quantitatively assess the roles of various types of energies influencing the stereochemical courses of reaction. The syn/anti stereoselectivities of halocarbenes in their cycloadditions toward cis-butene-2 are found to be governed by the Coulombic, dispersion, charge-transfer and exchange-repulsion energies altogether. Participation of the d orbitals of the chlorine atom in charge transfer is emphasized.
    Type of Medium: Electronic Resource
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