This paper presents a nitrogen-phosphorus-phytoplankton model in a water ecosystem.The main aim of this research is to analyze the global system dynamics and to study the wilds of eldraine prerelease guide existence and stability of equilibria.It is shown that the phytoplankton-eradication equilibrium is globally asymptotically stable if the input
The Battle of Adrianople has been presented as a turning point in history by classical as well as by modern authors.In this paper, classical sources, especially the res gestae, are being set into context together with modern works, trying to point out a balanced view on historical events and their interpretation by historians.Special attention is b
Urban garden landscape is a topic of great concern in the process of modern urban construction.It belongs 730 sunken lake road to the landscape with vitality in the construction process.The plant landscape is also the product of the combination of economy, politics, culture and technology.The cold land plants belong to the only life-changing and cy
Considering the coexistence of cold chain agro-products and ordinary agro-products in the market, the research object is the cold chain logistics subsidy.It is designed that a supply chain system consisting of duopoly upstream agro-products suppliers and a downstream agro-products retailer for research.The mechanism of cold chain logistics subsidy