content_image/327258.jpg content_image/327257.jpg content_image/327259.jpg content_image/327260.jpg content_image/327261.jpg
On the other hand, since 

<img src='content_image/327258.jpg'>

and 

we have 

<img src='content_image/327257.jpg'>

<img src='content_image/327259.jpg'>

We see that there exists a constant γ$_{1}$ such that for arbitrary γ > γ$_{1}$, the terms of X$_{1}$ and X$_{5}$ can be absorbed by 64 δ 2 $_{0}$s$^{3}$γ 4 ∫ Ω ϕ 3 | z | $^{2}$dxdydt , and we have 

<img src='content_image/327260.jpg'>

Since ϕ > 0 on ¯ Ω for γ > γ$_{1}$, there exist constants C$_{5}$ = C$_{5}$ ( γ ) and s$_{1}$ = s$_{1}$ ( γ ) such that for all s > s$_{1}$, 

<img src='content_image/327261.jpg'>

