Ajay Tripathi

Effects of swift heavy ion-irradiation on mica- and coal-based rocks of Lower Himalayas in Sikkim, India

Naturally occurring mica schist and coal sedimentary sequence in Sikkimese Himalaya were collected and investigated by two micro-techniques: scanning electron microscopy/energy dispersive spectrometry and Raman spectroscopy. They were applied to identify the constituents and the structure of the minerals before and after swift heavy ion irradiation. Vibrational data and the constituents of abundantly found mica schist and coal-based rock were acquired at room temperature and were compared with those reported for their analogues in the previous reports.

Optical Characterization of Medicinal Plants’ Extracts Used for the Treatment of Diabetes

The fluorescence and absorption spectroscopy on the medicinal plants’ extracts used for the cure of diabetes in Eastern Himalayan region viz. Darjeeling and Sikkim are presented. The extracts from the seeds of Totola (Oroxylum indicum Vent.) and fruits of Harra (Terminalia chebula Retz.) and Barra (Terminalia belerica Roxb.) are studied using thin layer chromatography and atomic absorption spectroscopy. The results are compared with those of commercially prepared polyherbal formulations from Totola, Harra and Barra viz. Dashmool Kwath, Haritaki Churna and Triphala Churna.