-Nonlinear tidal waves in a kind of estuary are studied in the paper using one-dimensional nonlinear hydrody-namic equations with friction. The estuary has expo
A new oscillopolarographic method for the determination of Si (Ⅳ) is described in this paper. In the system HC1- Sb(Ⅲ) -Mo(Ⅵ) -NaCl-ethyl alcohol, Si (Ⅳ) wi