摘要
研究一类厌氧消化过程的微生物生态模型,通过适当的简化,得到了一个二阶微分方程组。然后,在非自治扰动下,利用迭合度理论讨论了该方程组解的存在性,并得到了该方程组周期解全局存在的充分条件。
In this paper, an ecological model of microbes in anaerobic digestion process is studied. Proper predigesting leads to a second order differential equations. In the non-autonomous perturbation case, some sufficient conditions for the global existence of periodic solutions of this system are obtained by using the theorem of coincidence degree.
出处
《黑龙江科技学院学报》
CAS
2006年第4期262-266,共5页
Journal of Heilongjiang Institute of Science and Technology
关键词
微生物学
生态模型
拓扑度
周期解
microbiology
ecological modeling
topological degree
periodic solution
