An ink jet cartridge is provided comprising an outlet port, an ink containing region, and a wick substantially surrounding a portion of the ink containing region, the wick being configured such that ink flows to the outlet port. Also, an internal combustion engine having such a traction-means tensioning device and a traction means. The extending portion being movable from a retracted to an extended position. The excess oxidants are neutralized and the treated effluent is discharged overboard the vessel. The high-pass filtered EDA signals are then fitted to a dictionary of feasible skin conductance response signals.