.TILMedia.BaseClasses.PartialGasObjectFunctions.der_gaseousMassFraction_pTxi .TILMedia.BaseClasses.PartialGasObjectFunctions.der_gaseousMassFraction_pTxipartial function der_gaseousMassFraction_pTxi = TILMedia.BaseClasses.PartialGasObjectFunctionPrototypes.der_gaseousMassFraction_pTxi;