Design of a self-powered triboelectric face mask.

Usage of a face mask has become mandatory in many countries after the outbreak of SARS-CoV-2, and its usefulness in combating the pandemic is a proven fact. There have been many advancements in the design of a face mask and the present treatise describes a face mask in which a simple triboelectric nanogenerator (TENG) with an electrocution layer may serve the purpose of filtration and deactivation of SARS-CoV-2. The proposed mask is designed with multilayer filters, in which the inner three layers act as a triboelectric (TE) filter and the outer one as an electrocution layer (EL).

Comparative study of known nonsteroidal antiinflammatory drugs with glycosidal fraction isolated from Maesa chisia D. don var angustifolia Hook F and Th.

Antiinflammatory, analgesic and antipyretic activities of glycosidal fraction isolated from M. chisia were compared in battery of animal tests with known nonsteroidal antiinflammatory drugs (NSAIDs). The pharmacological activities compared favourably with NSAIDs whereas remarkable lack of toxicity was an added advantage.