Author/Authors :
Kannekanti، Vijaya Kumar نويسنده Department of Engineering Chemistry, Andhra University, Vishakapatnam-530 003, India , , Molli، Vijaya نويسنده Department of Engineering Chemistry, Andhra University, Vishakapatnam-530 003, India , , Batthula، Venkateswara Rao نويسنده Department of Engineering Chemistry, Andhra University, Vishakapatnam-530 003, India ,