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Mathematical models of interaction between pollutant and environment

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3 Author(s)
A. Bratus ; Moscow State Univ., Russia ; A. Mescherin ; A. Novozhilov

Various mathematical models of the interaction between the animate nature and a pollutant are considered. It is known that the animate nature can absorb pollutant up to certain limits (threshold value). Experiments show that the dependence between the emitted quantity of a pollutant and the remaining quantity can be described by a certain function. If some quantity of the pollutant is emitted regularly, we obtain an iterative process for a sequence of functions describing the dependence between the emitted and remaining quantities of the pollutant. We prove that this sequence converges. Using this discrete functional model, we construct a system of two differential equations of Lotka-Volterra types. This, in turn, enables us to build a distributed model on the plane and in three-dimensional space. Taking into account the diffusion of the pollutant and the distribution of plants, we obtain the system of three semi-linear parabolic equations. We present various results of numerical simulation for our distributed model

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Control of Oscillations and Chaos, 2000. Proceedings. 2000 2nd International Conference  (Volume:3 )

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