Machinability and tribological optimization of origami-inspired Almond Shell–PMMA via RSM, ML, and TOPSIS - Biplab Bhattacharjee; S. Sivalingam; Raman Kumar; Jasgurpreet Singh Chohan; Sandeep V.; Ripendeep Singh; Anupama Routray; Jibitesh Kumar Panda (PLoS ONE, 2026)