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  • Cerebral arteries, anomaly  (1)
  • Distributed time delays  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Carotid syphon-pericallosal arterial anastomosis (1982)
    Springer
    Acta neurochirurgica 66 (1982), S. 61-69 
    Details
    ISSN: 0942-0940
    Keywords: Cerebral arteries, anomaly ; internal carotid artery ; anterior cerebral arteries, aneurysm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A new case of an unusual anomalous anastomotic vessel between the carotid syphon and the pericallosal artery is reported. The description of their most characteristic angiographic and anatomical features is completed with a survey of analogous anomalies found in the literature. The incidence of associated other congenital vascular anomalies and berry aneurysms is high. An explanation of the embryonic development of this vessel is hypothetical. Its angiographic recognition may be useful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01809304
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Global stability results for a generalized Lotka-Volterra system with distributed delays (1988)
    Springer
    Journal of mathematical biology 26 (1988), S. 661-688 
    Details
    ISSN: 1432-1416
    Keywords: Epidemic systems ; Lotka-Volterra systems ; Distributed time delays ; Equilibrium states ; Global stability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract The paper contains an extension of the general ODE system proposed in previous papers by the same authors, to include distributed time delays in the interaction terms. The new system describes a large class of Lotka-Volterra like population models and epidemic models with continuous time delays. Sufficient conditions for the boundedness of solutions and for the global asymptotic stability of nontrivial equilibrium solutions are given. A detailed analysis of the epidemic system is given with respect to the conditions for global stability. For a relevant subclass of these systems an existence criterion for steady states is also given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00276147
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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