Hierarchical order by a relation Between self-propelled motion of individual E. coli and its macroscopic pattern

E.通过测量单个大肠杆菌的均方位移来估计大肠杆菌。大肠杆菌在不同的初始条件下，具有趋化性和非趋化性受体。结果表明，趋化细胞在不同营养盐初始浓度下的有效扩散系数没有差别，而非趋化细胞的有效扩散系数则取决于扩散前沿的速度。所提出的数值模型包含了上述实验特征，代表了E. coli模式。

The effective diffusion coefficient of E. coli was estimated by measuring the mean squaredisplacement of an individual E. coli having chemotactic and non-chemotactic receptorunder the different initial condition. As a result, the effective diffusion coefficients ofchemotactic cells in different initial concentrations of nutrient are not different, while thecoefficients of non- chemotactic cells are depended on the speed of propagation front. Theproposed numerical model including above experimental features, represented amacroscopic manner of E. coli pattern.