Biodegradable Polymers*. Shah, A. K. One Day Seminar on 'Polymer Science and Technology for a Better Tomorrow' organized by Indian Chemical Society (Vadodara Chapter) 3^rd Feb., 2002.

Biological Treatment of coloured effluents from dyestuff manufacturing units*, Desai, B., Iyer, B. D. and A. K. Shah AIBA 2001: Conference on Biotechnology - the Science and the Business at Indian Institute of Technology, New Delhi.

Bioremediation of caprolactam from the effluent and solid waste of nylon-6 plant*, Baxi, N. N. and Shah A. K. National Symposium on 'Sustainable environment: Achievements and future prospects' Department of Biosciences, Sardar Patel University, Vallabh Vidyanagar. Jan 4-6, 2001.

Microbial Exopolysaccharides as a Thickener in Textile Printing*, M. M. Gharia, S. Vishwas, B. Iyer and A. K. Shah, presented at XII Carbohydrate Conference organized by Association of Carbohydrate Chemists and Technologists (India), Nov. , 20-21, 1997, at University of Lucknow, Lucknow.

Evaluation of an Exopolysaccharide of Sphingomonas paucimobilis GS 1 as a Thickener in Textile Printing**, M. M. Gharia, N. B. Patel, G. Chawla and A. K. Shah, presented at XII Carbohydrate Conference organized by Association of Carbohydrate Chemists and Technologists (India), Nov. , 20-21, 1997, at University of Lucknow, Lucknow.

Bacillus brevis mediated suppression of Fusarial Wilt of Pigeon Pea*, S. R. Bapat and A. K. Shah, at TCDC International Workshop on Application of Biotechnology in Biofertilizers and Biopesticides, Oct. !5-18, 1997 at IIT, New Delhi.

New Dimensions in the management of waste from Caprolactam plant*, S. J. Patel, K. A. Patel, A. K. Shah and M. H. Mehta, Presented at the National Symposium on Frontiers in Applied Environmental Microbiology, Dec. 11-13, 1995 at Cochin.

Studies on Emulsifying properties of a microbial exopolysaccharide*. Anita Ashtaputre and A. K. Shah, Presented at the Fifth National Conference on Surfactants, Emulsions and Biocolloids, in Oct. 28-30, 1991 at Batoda.

Characterization of an extracellular polysaccharide from a nitrogen fixing, yellow pigmented Pseudomonas spp.*. Anita Ashtaputre, Juthika Menon, A. K. Shah, Presented at the International Symposium on Industrial Biotechnology, Nov. 18-20, 1990, Hyderabad.

Characterization and production of an extracellular polysaccharide from Azotobacter spp.*. C. Patki and A. K. Shah, Presented at the seminar on Recent Advances in Biochemical Engineering, Feb. 16-18, 1989 held at B. H. U., Varanasi.

A study on heterotrophy in a blue-green alga Chroococcus minutus* - at International conference on physiology at St. Johns New Foundland, Canada in August 1982.

Glucose induced alterations in enzyme levels in a heterotrophic Cyanobacterium Chroococcus minutus** at 50^th Annual meetings of Society of Biological Chemists (India) Nov. 18-20, 1981, Baroda.

Photoreactivation to UV damage in Blue-Green alga Chroococcus* at Symposium on Control Mechanisms in cellular process, BARC, Bombay, 1973.

Detection of pyrrole like compound in algal exudate** - at 60^th Indian Science Congress. Chandigarh, 1973.

Invited as a resource person for a workshop on Biotechnology and Bioprocess Engineering in December, 2003 to deliver 3 lectures: Microbial fermentation and Technology, Role of Biochemical Engineering in Scale-up of Biotechnological Processes and Mycelial morphology, Rheology and Productivity.

Invited as a resource person for Refresher course in Molecular Microbiology and Genetic Engineering to deliver a lecture Mycelial morphology, Rheology and Productivity in September, 2003.

Invited to deliver 9 lectures in Bioprocess Engineering and Industrial Biotechnology for Marine Biotechnology M. Sc. Programme between 6^th to 11^th October, 2003.

Invited to deliver 12 lectures in Bioprocess Engineering for Marine Biotechnology M. Sc. Programme between 6^th to 10^th October, 2002.

I have acted as a resource person during UGC sponsored refresher courses in Microbiology at Pune University in the month of July, 2001.

On invitation from Biotechnology Department, Goa University, Twelve Lectures on Bioprocess Engineering were delivered between 10^th to 17^th March, 2001.

On invitation from Microbiology Department, Goa University, Ten Lectures on Industrial Microbiology were delivered between 1^st March, 1999 to 6^th March, 1999.

On invitation from Bioscience Department, Sardar Patel University, Vallabh Vidyanagar, Several Lectures on Problems in the scale-up of microbial Fermentations were delivered in the first week of February, 1997.

On invitation from Biotechnology Department, Goa University, Ten Lectures on Bioprocess Engineering were delivered between 18^th Feb. 1991 to 23^rd Feb. 1991.

I have also acted as a resource person during UGC sponsored refresher courses in Microbiology at S. P. University, Vallabh Vidyanagar.