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  • 1
    Electronic Resource
    Electronic Resource
    Fast deposition of amorphous hydrogenated carbon films using a supersonically expanding arc plasma (1990)
    Springer
    Plasma chemistry and plasma processing 10 (1990), S. 49-69 
    Details
    ISSN: 1572-8986
    Keywords: Plasma deposition ; amorphous hydrogenated carbon ; supersonic expansion ; cascaded arc ; ellipsometry ; chemical reaction rate equation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Experiments concerning the growth rate and quality of an amorphous hydrogenated carbon film deposited in a reactor based on the supersonic expansion of an arc plasma are reported. In order to be able to calculate the deposition rate, an existing flow model has been completed with chernical reaction rate equations. The methane gas that is injected in the arc appears to be dissociated and ionized completely. The calculated deposition rates agree well with the experimental values obtained within-situ ellipsometry. The growth rates are an order of magnitude larger than those reported in the literature. Still, the film quality, expressed in terms of refractive index, optical bandgap, and hardness, is similar to those obtained by other authors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01460447
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The meiobenthos of five mangrove vegetation types in Gazi Bay, Kenya (1992)
    Springer
    Hydrobiologia 247 (1992), S. 99-108 
    Details
    ISSN: 1573-5117
    Keywords: meiobenthos ; mangroves ; distribution ; Kenya
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The vertical distribution of meiofauna in the sediments ofAvicennia marina,Bruguiera gymnorrhiza,Ceriops tagal,Rhizophora mucronata andSonneratia alba at Gazi Bay (Kenya), is described. Seventeen taxa were observed, with highest densities in the sediments ofBruguiera (6707 ind. 10 cm−2), followed byRhizophora (3998 ind. 10 cm−2),Avicennia (3442 ind. 10 cm−2),Sonneratia (2889 ind. 10 cm−2) andCeriops (1976 ind. 10 cm−2). Nematodes accounted for up to 95% of total densities; other common taxa were copepods, turbellarians, oligochaetes, polychaetes, ostracods and rotifers. High densities occurred to about 20 cm depth in the sediment. EspeciallyCeriops sediments show still high densities of nematodes (342 ind. 10 cm−2) and copepods (11 ind. 10 cm−2) in the deepest layer (15–22 cm). Particle size and oxygen conditions were major factors influencing meiobenthic distribution;Uca burrows had a major impact on distribution and abundance of meiofauna.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00008208
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    Paper (German National Licenses)
    Fulltext
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