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  • 1
    Electronic Resource
    Electronic Resource
    Dielectric properties of thin sections of barium titanate ceramics (1981)
    Springer
    Applied physics 25 (1981), S. 195-200 
    Details
    ISSN: 1432-0630
    Keywords: 77
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Thin sections in the thickness range down to 3–5 μm were produced from bariumtitanate ferroelectric ceramics. The small signal dielectric constant, as well as hysteresis loops were measured. Significant deviations from the bulk properties were observed, when the thickness of the sample was decreased to the average diameter of the grains. The measured results are discussed proposing a model with internal stresses and a distorted surface layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00902972
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Interaction between mianserin and clonidine at α 2-Adrenoceptors (1982)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 318 (1982), S. 288-294 
    Details
    ISSN: 1432-1912
    Keywords: Mianserin ; Clonidine ; Desipramine ; Acetylcholine ; α2-Adrenoceptors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The purpose of the present study was to characterize the effects of mianserin at α2-adrenoceptors. Firstly, the action of mianserin on postganglionic sympathetic fibres has been studied using the tachycardia induced by stimulation of the cardiac nerve in dogs. Mianserin increased this tachycardia, but could not prevent the inhibitory effect of clonidine in this model. However, an antagonistic effect of mianserin against clonidine was observed when animals were pretreated with desipramine. Secondly, mianserin antagonized the inhibitory effect of clonidine on the electrically stimulated guinea-pig ileum. In high concentrations, mianserin reduced both electrically and acetylcholine induced contractions. Thirdly, mianserin antagonised the sleep induced by clonidine in chickens. These results are consistent with α2-adrenoceptor blocking properties of mianserin in peripheral noradrenergic fibres in dogs, in cholinergic fibres in guinea-pig ileum and in the central nervous system in chickens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00501167
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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