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  • 1
    Electronic Resource
    Electronic Resource
    Role of molybdenum complex [Cp*Mo(.mu.-S)]2S2CH2 in dichloromethane hydrogenolysis (1991)
    s.l. : American Chemical Society
    Organometallics 10 (1991), S. 4066-4070 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00058a022
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Acetabular cup-siting device for total hip arthroplasty (1989)
    Springer
    Archives of orthopaedic and trauma surgery 108 (1989), S. 317-321 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A method for improving acetabular cup positioning at arthroplasty is introduced. The anatomic and engineering principles involved are explained. The device used for this method of siting is described. The method was tested in cadaver experiments and resulted in a 380% improvement of anteversion-retroversion position and a 370% improvement in abduction position over conventional siting. The value of this method in conventional and revision arthroplasty is suggested.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00932323
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Organelle loss in the endosymbiont ofGymnodinium acidotum (Dinophyceae) (1990)
    Springer
    Protoplasma 153 (1990), S. 178-185 
    Details
    ISSN: 1615-6102
    Keywords: Cryptophyceae ; Dinoflagellate ; Dinophyceae ; Endosymbiosis ; Gymnodinium ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The freshwater dinoflagellateGymnodinium acidotum is known to harbor a cryptomonad endosymbiont whose chloroplasts give the organism its blue-green coloration. Every cell examined from a wild population possessed chloroplasts, mitochondria, and other organelles which are of endosymbiotic origin. Transmission electron microscopy and fluorescence microscopy revealed that only 33% of these cells possessed the nucleus of the endosymbiont. The lack of a cryptomonad nucleus in some cells did not appear to affect the cells' ability to photosynthesize or move in response to varying levels of illumination. This represents the first report of a host/endosymbiont relationship in which a significant number of individuals from a given population lack a major endosymbiont organelle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01354002
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Unsteady axisymmetric creeping flow from an orifice (1991)
    Springer
    Acta mechanica 88 (1991), S. 61-75 
    Details
    ISSN: 1619-6937
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary The slow unsteady motion of a viscous incompressible fluid which issues from a finite orifice into the half-space,x〉0 is considered. By slow it is meant that the convective acceleration (i.e. nonlinear) terms in the Navier-Stokes equations are of negligible magnitude in comparison with terms attributable to viscosity. Only axisymmetric motions will be considered. The assumed nature of the motion along with the resultant linearization of the Navier-Stokes equations allows the construction of the Stokes stream function for the flow. Others have discussed this problem when the motion is steady. A general representation for the flow is given when the motion is unsteady and numerical results are presented for the resulting evolutionary motion of specific flows issuing from the orifice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01170593
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    The microtubular cytoskeleton of three dinoflagellates: an immunofluorescence study (1988)
    Springer
    Protoplasma 144 (1988), S. 68-71 
    Details
    ISSN: 1615-6102
    Keywords: Amphidinium ; Dinoflagellates ; Cytoskeleton ; Gymnodinium ; Immunofluorescence ; Microtubules
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The sub-thecal microtubular cytoskeleton of the dinoflagellatesAmphidinium rhynchocephalum, Gymnodinium sanguineum, andGymnodinium. sp has been investigated by indirect immunofluorescence microscopy. In these cells, the majority of cytoskeletal microtubules lie in the anterior-posterior plane. These longitudinal microtubules clearly originate from one of two radially arranged microtubular bands that correspond in location with the anterior and posterior edge of the cingolar depression. Despite the morphological variability of these gymnodinioid dinoflagellates, our data indicate that the microtubular cytoskeleton perfectly reflects the spatial patterning of the epicone and hypocone in each cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01320283
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  • 6
    Electronic Resource
    Electronic Resource
    An ultrastructural comparison of the mitotic apparatus, feeding apparatus, flagellar apparatus and cytoskeleton in euglenoids and kinetoplastids (1991)
    Springer
    Protoplasma 164 (1991), S. 91-104 
    Details
    ISSN: 1615-6102
    Keywords: Bodonid ; Crithidia ; Cytoskeleton ; Cytostome ; Diplonema ; Euglena ; Feeding apparatus ; Flagellar apparatus ; Microtubular root ; Mitosis ; Pellicle ; Rhynchomonas ; Trypanoplasma
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The euglenoids and kinetoplastids form a diverse assemblage of organisms which show no obvious phylogenetic relationship with other flagellates. An ultrastructural examination and comparison of the flagellar apparatus, the feeding apparatus, and mitotic nucleus indicate a number of shared morphological features which support a common ancestry for the two groups. Of particular interest is the euglenoid,Petalomonas cantuscygni, which shares many of the ultrastructural features common to both groups. Based on the data presented, we hypothesize that a euglenoid with features similar to those now present inP. cantuscygni was ancestral to both the euglenoid and kinetoplastid lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01320817
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    Paper (German National Licenses)
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