{HEAD ~ An increase} in {TAIL ~ zinc} from about 23% to about 28 30% results in markedly higher electrical conductivity 
in
{ HEAD ~ An increase } in { TAIL ~ zinc } from about 23 % to about 28 30 % results in markedly higher electrical conductivity
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH