[1] Tenth International Conference on Rapidly Quenched and Metastable Materials (RQ-10), held at Indian Institute of Science, Bangalore, India, August 23-27, 1999. [2] Workshop on Thermal Analysis for the Next Millennium held at Indian Institute of Technology Madras, Chennai, October 21-23, 1999. [3] Magnetics Society of India: Sixteenth Technical Meet and National Seminar on Advances in Magnetic Materials and Applications held at Department of Nuclear Physics, University of Madras, Chennai, September 22-23, 2000. [4] Workshop on Advanced Microscopic Techniques for Materials Analysis at University of Pune, December 11-16, 2000. [5] Symposium on 'Current Trends in Magnetism' at University of Madras, Chennai, February 19-22, 2001 [6] 44th DAE Solid State Physics Symposium at BARC, Mumbai, December 26-30,2001 [7] Seminar on 'Computer Simulations in Physics' at Madurai Kamarajar University, Madurai, February 4 and 5, 2002. [8] 13th Annual General Meeting of Materials Research Society of India at IICT/DMRL, Hyderabad, February 7-9, 2002. [9] 14th Annual General Meeting of Materials Research Society of India at BARC, Mumbai, February 11-13, 2003. [10] International Conference on Magnetism (ICM2003), Rome, Italy,July 26 - August 1, 2003. [11] Japanese-French magnetic fluid workshop, Tohoku University, Sendai, Japan during November 5-6, 2003. [12] 1st International workshop on water dynamics,Tohoku University, Sendai, Japan,17-19 March 2004. [13] Nanotechnology conference,Tokyo, Japan,May 9-11, 2004. [14] 3RD International workshop on water dynamics, Tohoku University, Sendai, 16-17 November, 2005. [15] International workshop on metal and alloy nanoparticles in US-Japan, Sendai, 12th Jan 2006. [16] 8th International symposium on hydrothermal reactions and 7th international conference on solvothermal reactions (ISHR&ICSTR2006), Sendai, Japan, August 5-9, 2006. [17] Internation conference on magnetism (ICM2006), Kyoto, Japan, August 20 - 25, 2006. [18] 4th Intl workshop on water dynamics, Sendai, Japan, November 7-8, 2006. Talks (1) DMRL, Hyderabad, 2001, 3 day talk on Mossbauer spectroscopy (2) April 27, 2006, Chemical synthesis of magnetic nanoparticles, Dept. of Nuclear Physics, University of Madras, Chennai, India.