Dear Sir, I'm reading research about Gasification of rice husk using aspen plus. The purpose of this work was to study the Effect of equivalence ratio (ER) ER = (weight O2/wieght dry biomass)/(stoi O2/biomass ratio) and I known the formula of ER's equation but don't know how to use this equation like the paper told they use ER = 0.37....so how do we...which item in aspen plus can varying ER