public double get_bY() {
Enumeration<Spezies> e;
Spezies spez;
double sum_dmj_Rj = 0D;
e = dmj_ein.keys();
while (e.hasMoreElements()) {
spez = e.nextElement();
sum_dmj_Rj = sum_dmj_Rj + dmj_ein.get(spez) * spez.get_R();
}
e = null;
e = dm_aus.keys();
while (e.hasMoreElements()) {
spez = e.nextElement();
sum_dmj_Rj = sum_dmj_Rj - dm_aus.get(spez) * spez.get_R();
}
double bY = T_Zone * sum_dmj_Rj;
return bY;
}
