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  • 1985-1989  (3)
  • 25.70.Jj  (1)
  • Benigne Systemerkrankung  (1)
  • Denervation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 334 (1986), S. 346-351 
    ISSN: 1432-1912
    Keywords: Nerve growth factor (NGF) ; Rat basal forebrain ; Cholinergic neurons ; Monoaminergic neurons ; Denervation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have investigated whether degeneration of basal forebrain cholinergic neurons is a potential trigger for increased NGF production in the adult rat brain. Electrolytic lesions of cholinergic neurons in the septum-diagonal band and in the nucleus basalis of Meynert induced a transient increase in NGF in the ventral hippocampus (+70%) and cerebral cortex (+125%), respectively. In contrast, selective aminergic denervation of the forebrain by electrolytic lesion of the medial forebrain bundle, did not increase NGF levels in hippocampus and cerebral cortex. Thus, a cholinergic mechanism appears to regulate NGF production in adult rat basal forebrain.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 369 (1986), S. 239-245 
    ISSN: 1435-2451
    Keywords: Benign systemic disorder ; Spleen ; Splenectomy ; Benigne Systemerkrankung ; Milz ; Splenektomie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die benignen Systemerkrankungen mit Milzbeteiligung umfassen haematologische Krankheiten, Speicherkrankheiten, Kollagenosen, Morbus Boeck, Infektionskrankheiten, Parasitosen und sonstige mit Blutabflußstörungen der Milz einhergehende Leiden. 4/5 der Fälle betreffen die haematologischen Erkrankungen des erythrocytären, thrombocytären und lymphatischen Systems sowie myeloproliferative und aplastische Syndrome. 227 von 1214 Splenektomien der letzten 20 Jahre wurden bei benignen Systemerkrankungen durchgeführt. Der ausgeprägte funktionelle und mechanische Hypersplenismus ergibt in der Regel die Indikation zur Operation. Die einzelnen Indikationen, die internistische Vorbehandlung und die Kombination mit nicht chirurgischen Maßnahmen werden dargestellt.
    Notes: Summary The benign systemic disorders with involvement of the spleen are divided into haematologic diseases, thesaurismosis, collagenosis, morbus Boeck, infectious diseases, parasitosis and others. 4/5 of the cases are haematologic diseases of the erythrocytic, the thrombocytic and lymphatic system as well as myeloproliferative and aplastic syndromes. 227 of 1214 splenectomies of the last 20 years were done in benign systemic diseases. The functional and mechanical hypersplenism as a rule is the cause for operation. The specific indications, the medical pretreatment and the combination of surgery and nonsurgical measures are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 326 (1987), S. 313-326 
    ISSN: 1434-601X
    Keywords: 25.70.Jj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Fission-fragment angular distributions were measured in the reaction of40Ar with208Pb near the fusion barrier. For nearly symmetric mass-/charge splits we find angular distributions symmetric around θ=90 degrees, however, with unusually large anisotropies. These develop gradually into forward-backward asymmetric distributions as one moves away from mass-/charge symmetry. This indicates that non-compound fission (‘quasi-fission’) competes with true fusion-fission. The relative contribution of quasi-fission to the total fission cross section is somewhere between 51 and 85%. In the framework of the extra-push model this is equivalent to an extra-extra push energy for compound-nucleus formation inside the true fission saddle point of 4〈E xx 〈9 MeV in agreement with a recent empirical parametrization of fusion-barrier shifts based on fusion-fission cross sections. On the basis of cross sections for fusion-evaporation residues it had previously been concluded that fusion of40Ar with Pb isotopes occurs unhindered. Possible reasons for this apparent discrepancy are discussed.
    Type of Medium: Electronic Resource
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