Biography: Alan R. Katritzky (b. 1928, London, U. K.) is Kenan Professor of Chemistry and Director of the Institute for Heterocyclic Compounds at the University of Florida. A light-hearted account of his life appeared in J. Het. Chem, 31,569-602 (1994), and an overview of his scientific work in Heterocycles, 37,3-130 (1994). He is actively engaged in research and teaching, editing, industrial c...

Aerosol measurements have been carried out at Kolhapur (16°42′N, 74°14′E) by using Twilight Photometer, which is indigenously designed and developed at the Indian Institute of Tropical Meteorology, a tropical station, Pune. The basic principle of this technique is if more number of aerosols exists in the atmosphere then more scattering takes place. Twilight observations have been carried out ma...