The method 1 wherein {HEAD ~ the heating} in step is from {TAIL ~ about 1100° C.} to about 1360° C 
is from
The method 1 wherein { HEAD ~ the heating } in step is from { TAIL ~ about 1100 ° C. } to about 1360 ° C
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH