TJ Mechanical engineering and machinery 11 Chemical engineering 3 Mechanics applied to machinery. Dynamics 2 Physical and theoretical chemistry 2 Biochemical engineering. Bioprocess engineering 1 Biodiesel fuels 1 Chemical elements 1 Conditions and laws of chemical reactions 1 Diseases of the circulatory (Cardiovascular) system 1 Environmental protection 1 Extraction (Chemistry) 1 Machine construction (General) 1 Machine design and drawing 1 Miscellaneous motors and engines.Including gas, gasoline, diesel engines 1 Nanoparticles 1 Oils, fats, and waxes 1 Palm oil 1 Surgery by region, system, or organ 1 TD Environmental technology. Sanitary engineering 1 Theory of solution 1