The agreement of measuring methods is one of the main problems in medicine and others science in related to measure. In this article we deal with one of these methods and performance the statistical test and finally show their result. This method is interclass correlation coefficient.

A numerical method is implemented to investigate the influence of an insoluble surfactant on the deformation of a falling drop normal to a solid surface. In the constructed model, the liquid drop falls due to the gravity. The front-tracking method is used to solve free boundary motion of the two-phase Navier-Stokes equations and the surfactant evolution. Results show that the surfactant affects to slow the falling drop; more significant for a relatively small drop than a big one. When the drop has attained the solid surface, the contained-surfactant drop deforms easier than the free-surfactant drop.

In this paper, we have presented a new method to solve second order nonlinear differential equations. Using the pseudo-operations given by monotone and continuous function g, the reduction of a nonlinear ordinary pseudo-differential equation isintroduced and investigated.