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  • 1990-1994  (3)
  • 1970-1974  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    A Stroock Varadhan support theorem in non-linear filtering theory (1990)
    Springer
    Probability theory and related fields 84 (1990), S. 119-139 
    Details
    ISSN: 1432-2064
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary Let (ρ t ϕ)0≦t≦1 be the unnormalized filter arising in the filtering theory of correlated diffusions. In this article, ϱ. φ. is considered as a stochastic process taking values inC(ℝ n ,ℝ); a description of the support of its law in the Fréchet spaceC([0,1],C(ℝ n ,R)) is given. This result is the analogue for stochastic partial differential equations of the celebrated Stroock-Varadhan theorem for diffusion processes. The support of the law of the filter is shown to be the closure of the set of trajectories obtained from the Zakai equation by replacing the Stratonovitch differentialdy by anH 1-control (herey denotes the observation process).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288562
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Prompt fission induced by antiproton annihilation at rest on heavy nuclei (1992)
    Springer
    The European physical journal 342 (1992), S. 183-189 
    Details
    ISSN: 1434-601X
    Keywords: 25.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Antiproton induced fission probabilities of U238, Bi209, Pb208 and Au177 are reported together with the mass distribution of the fission fragments in the U238 and Bi209 cases. The charged particles multiplicities observed in co-incidence with fission have, also, been measured for U and Bi and are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288467
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Contribution à l'étude infrastructurale du système neurosécréteur rétrocérébral chez Locusta migratoria migratorioides (R. et F.) (1970)
    Springer
    Cell & tissue research 111 (1970), S. 471-482 
    Details
    ISSN: 1432-0878
    Keywords: Corpora cardiaca ; Insects ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé L'étude infrastructurale des corpora cardiaca de Locusta révèle l'existence de 3 types de fibres neurosécrétrices (portion neurohémale) et d'un seul type de cellules glandulaires (portion endocrine intrinsèque). Elle permet également d'envisager les modalités du rejet des sécrétions exogènes et endogènes.
    Notes: Summary An ultrastructural study of the corpora cardiaca of Locusta migratoria migratorioides shows three neurosecretory fiber types in the neurohaemal part of these organs; only one cellular type constitutes the intrinsic glandular part of the corpora cardiaca. This study also shows sites of release of stored extrinsic neurosecretory material and of products elaborated by intrinsic glandular cells of the corpora cardiaca.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330925
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Contribution à l'étude infrastructurale du système neurosécréteur rétrocérébral chez Locusta migratoria migratorioides (R. et F.) (1970)
    Springer
    Cell & tissue research 111 (1970), S. 483-492 
    Details
    ISSN: 1432-0878
    Keywords: Neurosecretory Pathways ; Insects ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Résumé L'étude infrastructurale des nerfs cardiaques afférents et des nerfs allato-cardiaques qui entrent dans la constitution du système neurosécréteur rétrocérébral de Locusta migratoria migratorioides (R. et F.) révèle l'existence des trois types de fibres neurosécrétrices définis dans les corpora cardiaca. Une quatrième catégorie de fibres caractérisées par la présence de vésicules claires existe dans les nerfs allato-cardiaques et dans les corpora allata. L'origine des fibres et l'évolution des grains de neurosécrétion au cours de leur transit sont envisagées.
    Notes: Summary An ultrastructural study of the nervi corporis cardiaci and nervi corporis allati, which are part of the retrocerebral neurosecretory system of Locusta migratoria migratorioides, reveals the existence of three neurosecretory fiber types. A fourth neurosecretory fibertype with electron lucent vesicles is also present in the nervi corporis allati and in the corpora allata. The fibers are characterized by differences in the size and electron opacity of the neurosecretory granules. The origin of the various neurosecretory fiber types and the evolution of the neurosecretory granules are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00330926
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Excitation of multiply charged ions by electron impact (1991)
    Springer
    The European physical journal 21 (1991), S. S203 
    Details
    ISSN: 1434-6079
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new crossed beam apparatus has been developed for measuring differential cross sections for the excitation of multiply charged ions by electron impact. First results have been obtained for sodium-like Argon (Ar7+); the 3s-3p transition with an excitation energy of ∼ 17.5 eV has been studied at an electron energy of 100 eV. The preliminary experimental values are compared with theoretical results obtained within a Born-approximation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01426290
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    Paper (German National Licenses)
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