.TILMedia.BaseClasses.PartialGasObjectFunctions.isothermalCompressibility_psxi .TILMedia.BaseClasses.PartialGasObjectFunctions.isothermalCompressibility_psxipartial function isothermalCompressibility_psxi = TILMedia.BaseClasses.PartialGasObjectFunctionPrototypes.isothermalCompressibility_psxi;