{HEAD ~ The nanosize particulate additions} are predominantly present inside {TAIL ~ the matrix grains} and not in the grain boundaries 
are predominantly present inside
{ HEAD ~ The nanosize particulate additions } are predominantly present inside { TAIL ~ the matrix grains } and not in the grain boundaries
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH