{HEAD ~ Interspersed particles} of a carbonaceous material may be used to improve {TAIL ~ the electrical conductivity} 
{ HEAD ~ Interspersed particles } of a carbonaceous material may be used to improve { TAIL ~ the electrical conductivity }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL