2026. Synthesis and characterization of biodiesel from black date (Canarium schweinfurtii) seed kernel oil in the presence of green-synthesized Cu-Mn/TiO2 nanocatalyst using central composite design approach. Recent Advances in Natural Sciences. 4, 1 (Apr. 2026), 227. DOI:https://doi.org/10.61298/rans.2026.4.1.227.