When the resulting water and alkaline chemical are mixed with {TAIL ~ the heavy crude oil} in {HEAD ~ the presence} of ultrasonic stimulation, a semi stable to stable emulsion is rapidly formed which has a dramatically lower viscosity than the untreated viscous oil 
When the resulting water and alkaline chemical are mixed with { TAIL ~ the heavy crude oil } in { HEAD ~ the presence } of ultrasonic stimulation , a semi stable to stable emulsion is rapidly formed which has a dramatically lower viscosity than the untreated viscous oil
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH