# AcknowledgmentThis research was supported by the International Research

The solution of the diffusion equation provides for the different parts of the terrace [16]equation(8)n(x)neq("1x1")=1+R×λ2(p×a2−a2−p)2(D×neq)"1×1"(p×a−a−p)X−R×λ22(D×neq)"1×1"X2(0≤X≤?/λ)equation(9)n(x)neq(7×7)=1+R×λ2(p×a2−a2−p)2(D×neq)(7×7)(p×a−a−p)(X−1)−R×λ22(D×neq)(7x7)(X2−1)(?/λ≤X≤1)where ? is hair bulb the position of the domain boundary, p is the ratio (D×neq)“1×1”/(D×neq)7×7 and a=?/λ. Using the values estimated for the (D×neq)7×7 and (D×neq)“1×1” we obtain p=7 at 1060 K.