In recent years, agricultural non-point source pollution (ANPSP) has become increasingly
prominent, and nitrogen plays an important role in ANPSP. Therefore, we carried out …

The overuse of nitrogen fertilizer in rice field of China leads to nitrogen loss and serious
water pollution, so it is vital to accurately predict soil nitrogen transport in rice field. But the …

This paper is concerned with a spatial S− I epidemic model with nonlinear incidence rate.
First, the existence of the equilibrium is discussed in different conditions. Then the main …

The spread of infectious diseases often presents the emergent properties, which leads to
more difficulties in prevention and treatment. In this paper, the SIR model with both delay …

Spatial epidemic has increasingly become the focus of attention of the global population,
and epidemics modeling is an important tool for its prevention and control. However, how to …

A basic mathematical model in epidemiology is the SIR (Susceptible–Infected–Removed)
model, which is commonly used to characterize and study the dynamics of the spread of …

Un modelo matemático básico en epidemiologıa es el modelo SIR (Susceptible-Infectado-
Removido), que se utiliza habitualmente para caracterizar y estudiar la dinámica de …