TA Engineering (General). Civil engineering (General) 25 TP Chemical technology 17 TJ Mechanical engineering and machinery 13 TK Electrical engineering. Electronics Nuclear engineering 10 Catalysts 6 T Technology (General) 6 Chemical reactions 5 Esterification 5 Nanofluidics 5 Transesterification 5 Biomass 4 Chemical engineering 4 Hybrid nanofluid 4 Magnetohydrodynamics 4 Mass transfer 4 Palm oil 4 Phase interfaces 4 Redox reactions 4 chemistry 4 Bacteria 3 Biodiesel 3 CONVERSION 3 Calcium 3 Carbon 3 Carbon dioxide 3 Catalysis 3 Cellulose 3 Degradation 3 Electrodes 3 Esters 3