function XX_ss=ss2var(alfa,delttass,Ass,rss,gss,hb,deltah,ksi,epsilonass,Qh0, Nc0)
options=optimset('Display','Final','TolX',1e-10,'TolFun',1e-10);
[XX_ss,fval,exitf]  =   fsolve(@(XX)f_qhncsp(XX,alfa,delttass,Ass,rss,gss,hb,deltah,ksi,epsilonass),[Qh0 Nc0]);
