Personal Name: Yahiya Kadaf Ahmed Title: lecturer of bio-nanomaterials and environmental chemistry Surname: Manea Date of birth: 13/05/1979 Sex: Male Marital status: Married Citizenship: Yemeni Languages: English (V.Good) , Arabic (excellent ) and Urdu (Faier) Address work: Chemistry. Dept., Faculty of Science, University of Aden, Aden, Yemen. Current address. E-mail: [email protected] Mobile: +91 8755086373 Highest degree: Msc. (chemistry) Academic background: (1) B. Sc (Chemistry), Department of Chemistry, Faculty of Education, Zabid, Aden University of Hodeida, Yemen June 2004. (2) M. Sc (Pure Chemisstry), Department of Chemistry, Aden University, Yemen 12 / 02 / 2011. Titlel " " Previous and current professional positions (1) Demonstrator, Dept. of chemistry, faculty of Education Zabid, Univ. of Hodeida from 2004 to 2006. (2) Lecturer, in Al-salam School for Education – Bait Al-Faqih 2006-2011. (3) Demonstrator, Dept. of chemistry, faculty of Education Hodeida, Univ. of Hodeida from 2010 to 2011. (4) Assist. Lecturer, Dept. of Chemistry, faculty of Education, faculty of Education from 2006 to 2008. (5) Lecturer, Dept. of chemistry, faculty of Education, Aden University, Aden-Yemen from 2012 -2019.