One use of the asymmetric membranes of this invention as {HEAD ~ semipermeable membranes} is {TAIL ~ a reverse osmosis procedure} for liquids as illustrated in FIG 2 
One use of the asymmetric membranes of this invention as { HEAD ~ semipermeable membranes } is { TAIL ~ a reverse osmosis procedure } for liquids as illustrated in FIG 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH