1. Department of Chemistry, Government College of Engineering, Sengipatti, Thanjavur, India.
2. Department of Chemistry, AnnaiVailankanni Arts and Science College, Bishop Sundaram Campus (Affiliated to Bharathidasan University), Thanjavur, India.
3. PG and Research Department of Botany, Nehru Memorial College (Autonomous), Puthanampatti, (Affiliated to Bharathidasan University), Tamil Nadu, India.
4. PG and Research Department of Botany, AVVM Sri Pushpam College (Autonomous) Poondi, (Affiliated to Bharathidasan University), Thanjavur (Dist), India.
5. Department of Botany, Government Arts College, Kumbakonam, India.
6. Department of Zoology, Government Arts College for Women (Autonomous), Kumbakonam, Thanjavur, India.
7. Department of Botany, Annai Vailankanni Arts and Science College, Bishop Sundaram Campus (Affiliated to Bharathidasan University), Thanjavur, India.