The effect of added Trp on the endogenous antioxidant potential of HM and milk formula was tested with a ... desolvation temperature 200°C, cone gas 50 L/h, desolvation nitrogen gas 500 L/h ...

The formula for this is: ROI = (Sales growth- Marketing Cost) / Marketing Cost. There are also more elaborate ways to measure ROI, such as with campaign attributable ROI, which factors in existing ...