细胞骨架中磁小体的随机动力学
Stochastic Dynamics of Magnetosomes in Cytoskeleton
摘要：
旋转的微观磁性颗粒，磁小体，嵌入到细胞骨架和受到的影响，交流磁场和热噪声被认为是。磁小体动力学符合随机共振的条件下，不太紧的约束下的字符的粒子的紧固。规则旋转的偏移量达到了弧度的量级，这有助于解释低频弱磁场和地磁波动的生物效应。这样的1-rad旋转被200 nT量级的缓慢磁场变化有效地控制。
英文摘要：
Rotations of microscopic magnetic particles, magnetosomes, embedded into the cytoskeleton and subjected to the influence of an ac magnetic field and thermal noise are considered. Magnetosome dynamics is shown to comply with the conditions of the stochastic resonance under not-too-tight constraints on the character of the particle's fastening. The excursion of regular rotations attains the value of order of radian that facilitates explaining the biological effects of low-frequency weak magnetic fields and geomagnetic fluctuations. Such 1-rad rotations are effectively controlled by slow magnetic field variations of the order of 200 nT.
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