The geometrical analysis theory on grand potential and opposite chemical potential has been proposed.

According to the definition of the grand potential of an atom g,g vs chemicalpotential μ_i curves were obtained from the free energy of an atom-composition curves by ageometrical method and an important relationship had been achieved as follows:(?)Using this geometry analysis,it can be seen clearly that the grand potential condition is the sameas the common tangent rule for the phase equilibrium.

A new method for phase equilibrium calculation has been proposed in subregular solution model based on the concept of equality of two-phase equilibrium criterion of both the effective chemical potential and the grand potential.

The dissimilar phase equilibrium in ternary system was analyzed by grand potentialmethod, which determined the calculation way of dissimilar phase equilibrium in ternary system bygrand potential method.

The Blow-up Property of Nonlinear Schrdinger Equations with Potential;

The potential problem s method of analysis in axial symmetry;

In order to compare 10 data analysis methods under the Plackett-Burman saturated design,standardized by using Experiment-wise Error Rate,the critical value table of each method under 12 run and 20-run Plackett-Burman design was proposed by simulating using the SAS/IML language,and some primary compared studying conclusion was put forward using power as the evaluation criteria.