Study of Catalyst Used to Polymerize Ethylene in FCC Dry Gas for Producing Polyethylene Paraffin;

The morphology of a cochineal insect,Dactylopius confuses and the ultra-morphology of its wax secretion.;

The wax glands,wax secretion and the formation of the felt sac of Asiacornococcus kaki(Kuwana) was studied by scanning electron microscope.

Ultra-morphology and chemical composition of waxes secreted by the scale insect Dicyphococcus bigibbus (Homoptera: Coccidae);

Ultra-morphology and infrared absorption spectra of the waxes secreted by a scale insect,Didesmococcus koreanus (Homoptera:Coccidae);

Ultra-morphology and infrared absorption spectra of the waxes secreted by a scale insect, Eulecanium gigantea (Homoptera: Coccidae);