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  • Drosophila melanogaster subgroup  (1)
  • Ludwig–Soret effect  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Negative phototaxis inDrosophila associated with a morphological change in the compound eye (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 611-612 
    Details
    ISSN: 1420-9071
    Keywords: Drosophila melanogaster subgroup ; phototaxis, negative ; eye, compound
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The ultrastructure of the compound eyes of several photonegative selection lines and their unselected photopositive controls of five species of themelanogaster subgroup was analyzed. A qualitative phenotypic change concerning the rhabdomeres in one of the photonegative selection lines ofD. mauritiana could be detected. It was proved that this structural aberration of the rhabdomeres is caused by a parallel mutation of the mutantora (outer rhabdomeres absent) ofD. melanogaster.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02007682
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  • 2
    Electronic Resource
    Electronic Resource
    Stochastic Thermal-Diffusion Forced Rayleigh Scattering (1999)
    Springer
    International journal of thermophysics 20 (1999), S. 1-18 
    Details
    ISSN: 1572-9567
    Keywords: diffusion ; forced Rayleigh scattering ; Fourier transform ; Ludwig–Soret effect ; polymer solutions ; stochastic excitation ; thermal diffusion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The holographic grating technique of thermal-diffusion forced Rayleigh scattering (TDFRS) utilizes the Ludwig–Soret effect to induce a concentration modulation within a binary liquid. The signal generation is described in terms of a linear response formalism, and the memory function for the concentration mode g(t) and its Fourier transform, the diffusion susceptibility, are measured by means of pseudostochastic random binary sequences with flat power spectra in combination with fast Fourier transform and correlation techniques. For polydisperse polymer solutions the individual modes contribute proportional to their concentration to g(t), contrary to photon-correlation spectroscopy, where the correlation function is dominated by the high molar mass components. Other advantages of stochastic TDFRS are time-scale delocalization of dust spikes and frequency multiplexing. Measurements are reported on monodisperse and bimodal polystyrene in toluene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021461726559
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