This effects {HEAD ~ additional release} of gas from the emulsion and {TAIL ~ stratification} of the oil and water 
This effects { HEAD ~ additional release } of gas from the emulsion and { TAIL ~ stratification } of the oil and water
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH