This solution is then preferably removed from {HEAD ~ the matrix forming material} by {TAIL ~ vacuum} drying the layer at an elevated temperature 
by
This solution is then preferably removed from { HEAD ~ the matrix forming material } by { TAIL ~ vacuum } drying the layer at an elevated temperature
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH