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  • 1
    Electronic Resource
    Electronic Resource
    Cæsium-137 Body Burden in Persons chosen at Random from Selected Areas in Norway (1963)
    [s.l.] : Nature Publishing Group
    Nature 200 (1963), S. 278-279 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The amount of fall-out deposited is normally a function of rainfall. Local areas with high precipitation on the northern hemisphere have thus shown by far the largest contamination. This is the case in certain districts on the west coast of Norway having a yearly precipitation ranging up to 3,500 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/200278a0
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  • 2
    Electronic Resource
    Electronic Resource
    Concentrating Ejaculated Sperm for Electron Microscopy (1963)
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 201-203 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Previously, Bloom and Nicander3 have described a method for fixation of sperm material from the cauda epididymis. They placed drops of the concentrated sperm suspensions obtained from this source on small paper strips which were then floated on to the surface of the fixative solution. After ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/199201a0
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrastructure of the Sterilizing ‘Knobbed-Sperm’ Defect in the Bull (1962)
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 989-990 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In a previous investigation of the ultrastructure of the sperm head in the bull a characteristic structure, that is, the apical body, situated at the front edge of the galea capitis, has been described1. In order to obtain a better understanding of the functional mechanism of this apical body it ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/194989a0
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  • 4
    Electronic Resource
    Electronic Resource
    An ‘Apical Body’ in the Galea Capitis of the Normal Bull Sperm (1961)
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 1127-1128 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] More recently we have attempted to get the semen samples centrifuged as soon after the ejaculation as possible, and two specimens have been fixed (1 per cent osmium tetroxide) within 30 min. In such freshly prepared material the following new observations on the head of the bull sperm have been ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1901127a0
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  • 5
    Electronic Resource
    Electronic Resource
    The shape of spiral arms (1986)
    Springer
    Astrophysics and space science 118 (1986), S. 395-399 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The response by a gaseous disc to perturbations is investigated. Spectral analysis of the resulting pattern indicates that information about the nature of the perturber is maintained only if the perturbation is strong.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651155
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  • 6
    Electronic Resource
    Electronic Resource
    A hypothesis to explain the virial discrepancy in clusters of galaxies (1977)
    Springer
    Astrophysics and space science 46 (1977), S. 335-339 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract On the basis of numerical experiments onn-body binding energies we tentatively consider the following hypothesis: If the distance between two galaxies forming a binary system isa g, and a cluster of galaxies that is substructured in a hierarchical fashion onall scales froma g upwards has a total massM, then the total gravitational binding energy of the cluster isΩ TH = −GM 2/2a g . As an explanation for ‘missing’ masses up to order 100 we test this hypothesis in three different ways, finding remarkable agreement with observation, with no need for physical missing mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644381
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  • 7
    Electronic Resource
    Electronic Resource
    Substructure in clusters of galaxies: A clue to the ‘missing’ mass? (1977)
    Springer
    Astrophysics and space science 46 (1977), S. 327-334 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The influence of subclustering in rich clusters of galaxies is examined using results from numericaln-body experiments. It is found that, under some conditions, the standard virial theorem is satisfied. No physical missing mass is needed because its role is replaced by the gravitational energy of the subclustering. We find that, in the Coma cluster, this effect masquerades as a ‘missing’ mass about 7 times that of the physical mass, so that the apparent extant virial discrepancy (M VT/M≃8) in this cluster is explained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00644380
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  • 8
    Electronic Resource
    Electronic Resource
    Computer simulations of gas flow around close binary systems (1975)
    Springer
    Astrophysics and space science 33 (1975), S. 465-480 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A gas-dynamical model of gas streams around close binary systems is given. The velocity feld and the density distribution are determined for different parameter ranges. The results succeed in explaining the formation of a ring and a disk around the accreting component. The models furthermore reveal the existence of a tongue of matter extending from the inner Lagrangian point and a jet perpendicular to the system axis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00640112
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of the capillarity on a creeping film flow down an inclined plane with an edge (2000)
    Springer
    Archive of applied mechanics 70 (2000), S. 81-90 
    Details
    ISSN: 1432-0681
    Keywords: Key words Thin film ; edge flow ; creeping flow ; capillarity ; film surface
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary In creeping flows of thin films, the capillarity can play a dominant role. In this paper, the creeping film flow down an inclined plane with an edge is considered. The influence of the capillarity on the velocity and the film surface is studied analytically, numerically and experimentally.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004199900039
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  • 10
    Electronic Resource
    Electronic Resource
    The influence of dewetting in filled elastomers on the changes of their mechanical properties (1996)
    Springer
    Archive of applied mechanics 66 (1996), S. 231-241 
    Details
    ISSN: 1432-0681
    Keywords: filled polymers ; dewetting ; Poisson's ratio ; nonlinearity ; softening
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Summary The changes of mechanical properties of filled polymers and their dependence on deformation history are the subject of this paper. For most of filled polymers in practical use, the theory of linear viscoelasticity cannot be applied, even at small deformations. In this work, samples of glass bead filled polybutadiene rubber with different filler levels were investigated at small strains (ε〈10%). The evolution of the relaxation modulus and Poisson's ratio was observed in cyclic experiments, which were also applied in inducing a defined deformation history for the succeeding relaxation experiments. In these experiments, the relaxation modulus and Poisson's ratio were measured as functions of time, with strain, strain rate, filler level and the preceeding deformation history as parameters. The results indicate dewetting as the main reason for the changes of the mechanical properties of the filled materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00787351
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