In a method of controlling an internal combustion engine wherein an injection begin is calculated depending at least on an actual engine speed and the injection begin is corrected, the injection begin correction is calculated from a deviation of a desired air mass flow from an actual air mass flow. The sanitary napkin has an elongated main absorbent region surrounded by compressed grooves that are formed in a skin-side surface. The method continues by determining a present hub power state for the input-output hub, wherein depth of the present hub power state is less than or equal to depth of the lowest allowable hub power state. Each of the multiple collimators is associated with one an LED of the LED array and focus the light into beams. Other embodiments are disclosed. A tensiometer includes a stainless steel casing.