The flux limited Keller–Segel system; properties and derivation from kinetic equations

B Perthame, N Vauchelet, Z Wang - Revista matemática iberoamericana, 2019 - ems.press
Abstract The flux limited Keller–Segel (FLKS) system is a macroscopic model describing
bacteria motion by chemotaxis which takes into account saturation of the velocity. The …

Stiff-response-induced instability for chemotactic bacteria and flux-limited Keller–Segel equation

B Perthame, S Yasuda - Nonlinearity, 2018 - iopscience.iop.org
Collective motion of chemotactic bacteria such as Escherichia coli relies, at the individual
level, on a continuous reorientation by runs and tumbles. It has been established that the …

Derivation of the bacterial run-and-tumble kinetic equation from a model with biochemical pathway

B Perthame, M Tang, N Vauchelet - Journal of mathematical biology, 2016 - Springer
Kinetic-transport equations are, by now, standard models to describe the dynamics of
populations of bacteria moving by run-and-tumble. Experimental observations show that …

[PDF][PDF] 土壤细菌趋化性研究进展

朱晓艳, 沈重阳, 陈国炜, 张伟, 李保国, 王钢 - 土壤学报, 2019 - researchgate.net
摘要土壤是地球生态系统中最具生命活性的组成部分, 特有的孔隙结构承载着生物圈中最丰富
多样的微生物生命形态, 为动植物提供了大量的调控功能. 土壤是一个不断演变和发展的生态 …

The role of intracellular signaling in the stripe formation in engineered Escherichia coli populations

X Xue, C Xue, M Tang - PLoS computational biology, 2018 - journals.plos.org
Recent experiments showed that engineered Escherichia coli colonies grow and self-
organize into periodic stripes with high and low cell densities in semi-solid agar. The stripes …

The fractional diffusion limit of a kinetic model with biochemical pathway

B Perthame, W Sun, M Tang - Zeitschrift für angewandte Mathematik und …, 2018 - Springer
Kinetic-transport equations that take into account the intracellular pathways are now
considered as the correct description of bacterial chemotaxis by run and tumble. Recent …

Kinetic chemotaxis tumbling kernel determined from macroscopic quantities

K Hellmuth, C Klingenberg, Q Li, M Tang - SIAM Journal on Mathematical …, 2024 - SIAM
Chemotaxis is the physical phenomenon that bacteria adjust their motions according to
chemical stimulus. A classical model for this phenomenon is a kinetic equation that …

Mathematical modeling of cell collective motion triggered by self-generated gradients

V Calvez, M Demircigil, R Sublet - Active Particles, Volume 3: Advances in …, 2021 - Springer
Self-generated gradients have attracted a lot of attention in the recent biological literature. It
is considered as a robust strategy for a group of cells to find its way during a long journey …

Multiple asymptotics of kinetic equations with internal states

B Perthame, W Sun, M Tang… - Mathematical Models and …, 2020 - World Scientific
The run and tumble process is well established in order to describe the movement of
bacteria in response to a chemical stimulus. However, the relation between the tumbling rate …

On the asymptotic behavior of a run and tumble equation for bacterial chemotaxis

JA Evans, H Yoldaş - SIAM Journal on Mathematical Analysis, 2023 - SIAM
We prove that linear and weakly nonlinear run and tumble equations converge to a unique
steady state solution with an exponential rate in a weighted total variation distance. In the …