INVESTIGATION OF THE EFFECTS OF THE ADDITION OF TITANIUM DIOXIDE (TiO2) NANOPARTICLE FUEL ADDITIVE IN COTTON BIODIESEL ON ENGINE PERFORMANCE. JESR [Internet]. 2024 Jul. 30 [cited 2025 Sep. 13];30(1):31-8. Available from: https://jesr.ub.ro/journal/article/view/430