The maladies caused by salt stress arise from the disruption of cellular aqueous and ionic equilibrium. Na+ accumulates excessively in the cytoplasm can be toxic to the metabolism and affects the regulation mechanism of the plant cell.
The auther considered the stability of solution for a kind of model of pest and tneir natural enemies,sufficient conditions are give to insure that the positive constant equilibrium of(E) are asymptotic stability and exterd result given in paper[1],[2].
In this paper, we discuss the behaviour of equilibrium points of the Volterra Predator - prey system x=ax (x- L ) (K - x) - bxy, y=-cy+dxy-ay2. In the mean time, we study the existence of separatrices cycle and limit cycle of the system under two positive equilibrium points.
The natural dehydration experiment indicated that P. mongolica seedlings reached equilibrium after 102 h in normal condition, but the dehydration rate decreased and the dehydration equilibrium time was delayed after 3 d of drought stress.
The denaturation data are analyzed based on the effective Gibbs free energy (ΔG°eff) approach and the chemical denaturation parameters including ΔG°eff, m value and equilibrium unfolding constant (KU) were obtained.
Two new classes of life distributions, namely the class of new better than its equilibrium life in convex ordering (NBELC), and its dual class, the class of new worse than its equilibrium life in convex ordering (NWELC), are introduced.