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  • 1985-1989  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Description of the Infraciliature and Morphogenesis in the Ciliate Urotricha ondina N. Sp. (Prorodontida, Urotrichidae) (1989)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 36 (1989), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Recent works on prostomatid ciliates show that some genera of this group have a differentiated oral infraciliature and that their stomatogenesis during division involves the proliferation of only a few somatic kineties. These findings have significant implications regarding the iaxonomic status of these genera and also on the terminology used for the oral structures. In Urotricha ondina, the oral infraciliature consists of (1) a paroral kinety formed of paired kinetosomes that encircle the cytostome at the anterior pole of the cell and (2) 3 adoral organelles, each formed of 2 rows of kinetosomes, ventral in position and obliquely disposed, lying above 3 short somatic kineties that do not reach the anterior pole of the cell. This oral ciliature —formerly known as the corona and brosse, respectively—originate during stomatogenesis from the proliferation of 4 somatic kineties that lie posterior to the adoral organelles of the parental cell.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1989.tb02719.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structure studies of non-crystalline materials by electron diffraction (1988)
    Springer
    Journal of materials science 23 (1988), S. 2021-2028 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The ability of electron diffraction to determine the structure of non-crystalline materials has been critically revised on the basis of the main sources of error: the premature temination of the experimental intensity curve and the problems associated with the elimination of the inelastically scattered intensity. A method of studying the problem is presented and the efficacy of the most representative procedures for reducing errors in the final correlation functions is checked.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01115764
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    High-temperature luminescence properties of Eu2+-activated alkali halide phosphor materials (1988)
    Springer
    Journal of materials science 7 (1988), S. 1310-1312 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00719967
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    XPS and TRP/TPO Study of the behaviour of rhodium particles supported on TiO2 (1988)
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 12 (1988), S. 247-252 
    Details
    ISSN: 0142-2421
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: Oxidation/reduction processes occurring in rhodium particles supported on TiO2 have been studied by a combination of XPS and TPR/TPO. Rh(I) and Rh(III) are formed by calcination in excess of O2 at 773k, Rh(III) being favoured for samples with very small metal particles. For samples with particles in the range 2.0-10.0 nm, oxidation up to Rh2O of the whole particles occurs followed by a kinetically controlled growth of a thin Rh2O3 layer at their surface together with the formation of Rh(III) species at the particle/support interface. H2 adsorption at 300 K on the highly oxidized particles (up to Rh2O3) is an activated process which implies reduction of Rh(III) into Rh(I). Further reduction at 373 K leads to Rh(O) formation although some Rh(I) and Rh(III) species still remain unreduced up to T 〉 473 K. A model is proposed to decribe the evolution of these rhodium oxide particles as well as to explain their different behaviour against H2 adsorption at 300 K.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/sia.740120404
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    Paper (German National Licenses)
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