Based on the distance matrix and adjacent matrix of molecular structure, a novel topological index is proposed. A set of topological parameters is built to refl
An analytical method has been developed to determine bisphenol A and five degradation products of al-kylphenol ethoxylates in sewage and sludge. The parameters
In order to clarify occurrence regularity of major damage generations of Nilaparvata lugens( Stl) in Sandu Shui Autonomous County( Sandu County for short),Gui