期刊
JOURNAL OF MATHEMATICAL CHEMISTRY
卷 43, 期 1, 页码 338-349出版社
SPRINGER
DOI: 10.1007/s10910-006-9200-z
关键词
variable yield; periodically pulsed substrate; permanence; chaotic attractor
In this paper, we consider the dynamic behaviors of a mathematical chemostat model with variable yield and periodically impulsive perturbation on the substrate. The microbial growth rate is the Monod function mu S/a+S and the variable yield coefficient delta(S) is quadratic (1 + cS(2)). Using Floquet theory and small amplitude perturbation method, we establish the condition under which the boundary periodic solution is globally asymptotically stable. Moreover, the permanence of the system is discussed in detail. Finally, by means of numerical simulation, we demonstrate that with the increasing of the pulsed substrate in the feed the system exhibits the complex dynamics.
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