Tác giả: Phòng Thông Tin Truyền Thông (Thông Tin Truyền Thông Phòng)

Abstract We show that every non-invertible square matrix over a division ring D can be expressed as the product of a unipotent matrix and a nilpotent matrix. As an application, we further show that every non-invertible matrix over D can be expressed as the product of at most two matrices that lie in the image of some polynomial in...

Abstract Sequential reduction and oxidation processes are promising for mineralizing recalcitrant contaminants with high oxidation states. The reduction step transforms such contaminants into oxidizable intermediates that are subsequently mineralized in the oxidation step. In this study, we assessed a sequential reduction–oxidation system using silica-coated nanosized zero-valent iron particles (nZVI@SiO2) and persulfate to establish in situ...