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  • Chemotaxis  (1)
  • ultrasonics  (1)
  • Conformational change
  • Cytochrome P-450 conversion
  • 1985-1989  (2)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Critical dynamic viscosities in a binary mixture (1989)
    Springer
    International journal of thermophysics 10 (1989), S. 379-387 
    Details
    ISSN: 1572-9567
    Keywords: critical phenomena ; cyclohexane ; polystyrene ; shear modulus ; ultrasonics ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Ultrasonic shear measurements were conducted on polystyrene-cyclohexane solutions at 3, 51, and 252 kHz using the crystal fork and torsion methods. The real and imaginary parts of the complex shear modulus above the critical point are compared with modified theoretical expressions derived within the framework of the decoupled-mode theory. For this comparison, a background part was assumed to be described by a scaling form proposed by de Gennes. Numerical analysis of the data shows a satisfactory agreement between the theory and the experiments for ultrasonic shear data over a wide range of reduced frequencyω ... In addition, it is shown that the description of the simple viscosity dynamical scaling function is broken at a high-frequency limit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01133534
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Information processing for the organization of chemotactic behavior ofPhysarum polycephalum studied by micro-thermography (1987)
    Springer
    Protoplasma 138 (1987), S. 98-104 
    Details
    ISSN: 1615-6102
    Keywords: Chemotaxis ; Information processing ; Oscillation ; Physarum polycephalum ; Thermal image camera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The spatial and temporal pattern of oscillating temperatures on the cell surface of a plasmodial strand ofPhysarum polycephalum was measured with a sensitive thermal image camera. The longitudinal tension of the strand was studied simultaneously. In the absence of chemical stimulation, the phases of the temperature oscillation observed at various portions of the strand were entrained with almost coincidental phase. The temperature and tension oscillation were synchronized, although the phase difference between them was occasionally changed. With local chemical stimulation, the phase of the temperature oscillation advanced in the portion to which the plasmodium would be induced to migrate. The phases between temperature and tension oscillations then became constant. The mechanism by which the plasmodium processes local information of chemical stimulus to global information for the migration is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01281018
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    Paper (German National Licenses)
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