1. Department of Chemistry, Koneru Lakshmaih Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh, India
2. Electrical engineering department, Dr Narla Tata Rao Thermal Power Station, Vijayawada, Andhra Pradesh, India
3. CIMFR, Retd Chief Scientist, Dhanbad, India
4. Dept of Engineering Chemistry, JNTU College of Engineering, Ananthapuramu, Andhra Pradesh, India