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  • 1
    Electronic Resource
    Electronic Resource
    Stark modulation spectrometer using a wideband Zeeman-tuned He-Xe laser (1981)
    Springer
    Applied physics 24 (1981), S. 187-195 
    Details
    ISSN: 1432-0630
    Keywords: 32.20.Dr ; 42.60.Cz ; 42.60.Lh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A 200 GHz-tunable 3.51 μm He−Xe laser is employed in Stark-modulation spectroscopy, and good performance of the spectrometer is demonstrated by an exemplary measurement on the HDO spectrum. Various spectral features and the anomalous line shapes due to the Stark effect are interpreted and used as an important clue to identification of the absorption lines.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00899754
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Efferent fibers and daily rhabdomal changes in the anteromedial eye of the liphistiid spider, Heptathela kimurai (1993)
    Springer
    Cell & tissue research 272 (1993), S. 517-522 
    Details
    ISSN: 1432-0878
    Keywords: Retina ; Innervation ; Rhabdomeres ; Synaptoid contacts ; Heptathela kimurai (Chelicerata)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The presence of efferent fibers in the retina of liphistiid spiders, kept in natural daily cycles of illuminance, was examined by electron microscopy. The efferent fibers were observed to extend their processes through the ocellar nerve to the retina. They contained characteristic large electron-dense granules and branched repeatedly within the retina with varicosities, to provide synaptoid contacts with the receptor cells. They ran mostly among receptor cells and glial cells but sometimes protruded into receptor cells to establish invaginated synaptoid contacts. The synaptoid structures were characterized by spherical clear vesicles located at the presynaptic region, with electron-dense material adhering to the plasma membranes of the receptor cell and the efferent fiber, and a cleft about 10 nm wide formed by the two opposed parallel membranes. The clear vesicles and the electron-dense granules were secreted by exocytosis. The efferent fiber was characteristically presynaptic in relation to the receptor cell. In addition, the rhabdoms differed in size from day to night.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00318558
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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