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  • 1
    ISSN: 1432-203X
    Keywords: Key words Cucumis sativus ; Plasma membrane ; H+-ATPase ; H+-transport rate ; Root temperature
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Cucumber plants (Cucumis sativus L.) were grown at different root temperatures and the H+-ATPase activities in the root plasma membranes were investigated. Electrolyte leakages and the amount of water transported from root to shoot indicated the sensitivity of cucumber root systems to low root temperature. The increase in H+-ATPase activity after 1 day of low root temperature treatment was reversed and gradually diminished as root temperatures of 10 °C continued for another 6 days. The H+-transport rate of the plasma membranes and the transcriptional activity of the corresponding gene expression closely followed the H+-ATPase activity. The role of H+-ATPase in root plasma membranes in terms of the root acclimation process at low root temperature is discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Optical and quantum electronics 29 (1997), S. 877-881 
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We propose the concept of an incident angle in the form of complex number and analyse planar optical waveguides by applying the concept. The complex angle of incidence is concerned with the modelling of prism–gap–waveguide structures. It is shown that, when optical waveguides are analysed by means of the transfer matrix method, the proposed concept enables us to find solutions faster and more accurately than by using the method utilizing the leaky structure.
    Type of Medium: Electronic Resource
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