The mixture can be subjected to, e.g., a compression or injection molding process, to obtain {HEAD ~ solid spheres} for the center or hemispherical {TAIL ~ shells} for forming an intermediate layer 
for
The mixture can be subjected to , e.g. , a compression or injection molding process , to obtain { HEAD ~ solid spheres } for the center or hemispherical { TAIL ~ shells } for forming an intermediate layer
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH