All correspondence relating to NAMP and TNAMP Publications should be addressed to the Editor-in-Chief, whose address is: Prof. Ben. Iyorzor, Department of Physics, University of Benin, Benin City, Nigeria. Email: editor.jnamp@uniben.edu Tel. +2347035400919 For further information and the submission of articles for publication , check our website: https://nampjournals.org.ng