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  • 1
    Electronic Resource
    Electronic Resource
    Mechanism of non-adhesiveness of endothelial and epithelial surfaces (1978)
    [s.l.] : Nature Publishing Group
    Nature 274 (1978), S. 710-711 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Endothelial cells in vivo form coherent monolayer sheets at the inner surface of blood vessels3. Endothelial cells in cultures also form monolayers on the substrate4'5. Coherent sheets of similar morphology are formed in cultures by many types of epithelia6'11, and the upper surfaces of various ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/274710a0
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  • 2
    Electronic Resource
    Electronic Resource
    Integrability of linear and nonlinear evolution equations and the associated nonlinear fourier transforms (1994)
    Springer
    Letters in mathematical physics 32 (1994), S. 189-210 
    Details
    ISSN: 1573-0530
    Keywords: 34A34 ; 35Q20 ; 58F07 ; 58G37
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The inverse spectral method is a nonlinear Fourier transform method for solving certain equations. Here, we emphasize that such transforms should be considered in their own right. We also elucidate further the connection between the Fourier transform and inverse spectral methods by establishing that linear equations can also be solved through the inverse spectral method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00750662
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  • 3
    Electronic Resource
    Electronic Resource
    GG Functions and their Relations to General Hypergeometric Functions (1999)
    Springer
    Letters in mathematical physics 50 (1999), S. 1-28 
    Details
    ISSN: 1573-0530
    Keywords: hypergeometric functions ; A-systems
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract In this Letter, we present a new approach to the notion of hypergeometric functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007653012080
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  • 4
    Electronic Resource
    Electronic Resource
    The algebra of Weyl symmetrised polynomials and its quantum extension (1991)
    Springer
    Communications in mathematical physics 136 (1991), S. 487-499 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The Algebra of Weyl symmetrised polynomials in powers of Hamiltonian operatorsP andQ which satisfy canonical commutation relations is constructed. This algebra is shown to encompass all recent infinite dimensional algebras acting on two-dimensional phase space. In particular the Moyal bracket algebra and the Poisson bracket algebra, of which the Moyal is the unique one parameter deformation are shown to be different aspects of this infinite algebra. We propose the introduction of a second deformation, by the replacement of the Heisenberg algebra forP, Q with aq-deformed commutator, and construct algebras ofq-symmetrised Polynomials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02099070
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  • 5
    Electronic Resource
    Electronic Resource
    On the localization of topological invariants (1992)
    Springer
    Communications in mathematical physics 146 (1992), S. 73-90 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The approach of formal differential geometry to the topological invariants which can be localized is developed. The universal space and universal characteristic forms are constructed. They give rise to primary and secondary characteristic forms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02099208
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  • 6
    Electronic Resource
    Electronic Resource
    Origin of signals conveyed by the ventral spino-cerebellar tract and spino-reticulo-cerebellar pathway (1984)
    Springer
    Experimental brain research 54 (1984), S. 426-431 
    Details
    ISSN: 1432-1106
    Keywords: Spinal cord ; Scratch reflex ; Ventral spino-cerebellar tract ; Spino-reticulo-cerebellar pathway ; Cerebellum ; Cooling the nervous tissue ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary (1) The “fictitious” scratch reflex was evoked in decerebrate curarized cats by pinna stimulation. Activity of neurons of the ventral spinocerebellar tract (VSCT) from the L4 and L5 segments of the spinal cord as well as of neurons of the spinoreticulo-cerebellar pathway (SRCP) from the lateral reticular nucleus of the medulla oblongata was recorded. Cooling and destruction of different parts of the lumbo-sacral enlargement of the spinal cord were performed. (2) Cooling of the L5 or L6 segment abolished the rhythmic activity in the greater part of the spinal hindlimb centre but did not affect the generation of rhythmic oscillations in the remaining (rostral) segments of the lumbo-sacral enlargement. Under these conditions, neither the rhythmic activity of VSCT neurons located rostral to the thermode nor that of SRCP neurons changed. (3) A normal rhythmic activity of SRCP neurons also persisted after destruction of grey matter in the L3 and L4 segments. It can be concluded that activity of these neurons is independent of whichever part of the enlargement generates rhythmic oscillations. (4) From these observations a hypothesis is advanced that the main content of signals conveyed by the VSCT and SRCP to the cerebellum is the information regarding activity of the generator of rhythmic oscillations that is located in the L3-L5 spinal segments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00235467
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  • 7
    Electronic Resource
    Electronic Resource
    Surfaces on Lie groups, on Lie algebras, and their integrability (1996)
    Springer
    Communications in mathematical physics 177 (1996), S. 203-220 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract It is shown that the problem of the immersion of a 2-dimensional surface into a 3-dimensional Euclidean space, as well as then-dimensional generalization of this problem, is related to the problem of studying surfaces in Lie groups and surfaces in Lie algebras. A particular case of the general formalism presented here implies that any surface can be characterized in terms of 2×2 matrices using an arbitrary parametrization. It is also shown that this generality of parametrization is useful for studying integrable surfaces, i.e. surfaces described by integrable equations. In particular starting from a suitable Lax pair (i.e. a suitable integrable equation), it is possible to construct explicitly large classes of integrable surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02102436
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  • 8
    Electronic Resource
    Electronic Resource
    Projective representations of the current group SU(1, 1) X (1993)
    Springer
    Functional analysis and its applications 27 (1993), S. 275-277 
    Details
    ISSN: 1573-8485
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01078846
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  • 9
    Electronic Resource
    Electronic Resource
    A correction to the paper “hypergeometric functions and toric varieties” (1993)
    Springer
    Functional analysis and its applications 27 (1993), S. 295-295 
    Details
    ISSN: 1573-8485
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01078854
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  • 10
    Electronic Resource
    Electronic Resource
    Stimulation of DNA synthesis in cultures of mouse embryo fibroblast-like cells (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 75 (1970), S. 305-313 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Stimulation of the DNA synthesis and mitoses in stationary cultures of mouse embryo fibroblast-like cells was induced by various agents such as ribonuclease, digitonin, fresh medium and commercial preparations of hyaluronidases. Time sequence of stimulation was similar in experiments with all these agents. Cells were activated to enter S phase from GI phase. The rise of the number of DNA-synthesizing cells was preceded by a latent period of about 8-12 hours with the maximal number of DNA-synthesizing cells being observed at 16-24 hours. Mitotic wave was observed after the wave of DNA synthesis. Stimulation of DNA synthesis and mitosis was not preceded by any significant decrease of an average cell density in the culture. The progeny of activated cells had no greater chance than other cells to be activated again when stimulation was repeated.It is concluded that similar proliferative reactions can be induced in stationary cultures by a variety of diverse agents. Possible role of cell surface changes in the induction of these reactions is discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040750307
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