Through a detailed research of several pedigrees spanning hundreds of years of Cheng clan in Xin’an, this paper illustrates the Cheng’s cognition on ancestor and their process of creating ancestor in different periods.

To study special Markov processes with infinitely divisible limit distributions, the characteristic function was used.

The concept of average Markov process is introduced.

Based on the description of hybrid states and under certain assumptions, the system becomes a time-homogeneous hybrid state Markov process.

Cole Brook White equation is a complicated semi experience formula which describes practical pipe friction characteristics.

The experiment with different concentrations of pollutant atrazine indicated that the reaction accorded with the model 1 of dynamics and the curve belonged to the first phase curve of Michaelis equation when the concentrations of pollutant atrazine were lower.

Another experi ment w ith different concentrations of pollutant atrazine indicated that the reaction a ccord with the model 1 of dynamics and the curve is belonging to the first phase curve of Michaelis equation when .

The optimum conditions affecting the hydrolysis activity of metmyoglobin reductase (MetMbase) from porcine cardiac muscle towards porcine metmyoglobin (MetMb) were determined with the equine MetMb purchased from Sigma Company as a standard marker using orthogonal array design, and the Michaelis equation and the enzyme kinetics were investigated as well.