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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 25 (1969), S. 370-371 
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Application of ACh on the isolated perfused retina of the frog elicited spikes of the optic nerve. The extent of this spike activity depended on the amount of ACh applied. The retinal response to ACh was varied by prostigmine and atropine as expected by their pharmacological properties. From these experiments it cannot be concluded that ACh is acting on the synapses of the firing ganglion cells directly.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annali di matematica pura ed applicata 31 (1950), S. 65-68 
    ISSN: 1618-1891
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Description / Table of Contents: Summary A theorem due toLaguerre gives a particularly simple and generally very precise upper limit for the number of roots 〉 α, α〉0, of an algebraic equation. A new proof of this theorem is given which shows thatLaguerre’s bound is never less than that obtained fromBudan-Fourier theorem.
    Notes: Sunto Un teorema dovuto aLaguerre dà un limite superiore per il numero delle radici 〉 α, α〉0, di un’equazione algebrica. In questa nota il teorema diLaguerre è provato con un ragionamento che mostra che il limite diLaguerre non è mai inferiore a quello ottenuto col teorema diBudan-Fourier.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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