TA Engineering (General). Civil engineering (General) 484 TJ Mechanical engineering and machinery 442 TK Electrical engineering. Electronics Nuclear engineering 279 Mechanical engineering & materials 38 Materials science 33 T Technology (General) 31 Compressive strength 30 TP Chemical technology 30 Nanostructured materials 25 Finite element method 23 Materials of engineering and construction 23 human 22 TS Manufactures 21 Tensile strength 20 Sustainable development 16 TD Environmental technology. Sanitary engineering 16 Machine design and drawing 15 Porous materials 15 Heat transfer 14 Humans 14 Environmental engineering 13 Mechanical properties 13 Scanning electron microscopy 13 TH Building construction 13 chemistry 13 Article 12 Biomedical engineering 12 Building construction & materials 12 Engineering: general 12 Environmental science, engineering & technology 12