In light of the growth in vertically specialized in global trade, the present paper uses input– output tables from the World Input–Output Database to construct an environmental multi-regional input–output model to calculate the CO₂ emissions embodied in China's international trade during...

A novel method for the synthesis of solid amine sorbents integrated into alumina-extraction from fly ash (FA) has been developed. The products, PEI-FA type sorbents, exhibit improved sorption performance and can be produced with a reasonable cost. Precursors for making these solid amine sorbents...

In this paper, an SEIR epidemic disease model with time delay and nonlinear incidence rate is studied, and the dynamical behavior of the model under pulse vaccination is analyzed. Using the discrete dynamical system determined by the stroboscopic map, we show that there exists an infection-free...

This article proposes a mathematical model which has been used to investigate the importance of lytic and non-lytic immune responses for the control of viral infections. By means of Lyapunov functions, the global properties of the model are obtained. The virus is cleared if the basic...

We introduce and study a chemostat model with plasmid-bearing, plasmid-free competition and impulsive effect. According to the stability analysis of the boundary periodic solution, we obtain the invasion threshold of the plasmid-free organism and plasmid-bearing organism. Furthermore, by using...