Darshit S. Upadhyay, from Mechanical Engineering Department, presented a paper in “International Conference on Sustainable Energy and Environmental Challenges” organized by International Society for Energy, Environment and Sustainability (ISEES), IIT Roorkee and NIT Uttarakhand during 18-21 December 2018 at IIT Roorkee. Prof. Rajesh N. Patel was co-author in this paper. The title of the paper was “Elemental and heat loss analysis of different feedstock in the downdraft gasifier.” This paper was selected as the best paper award. Along with certificate and memento, 100 EUR book voucher (By springer) was also provided by the organizer.