TP Chemical technology 142 TJ Mechanical engineering and machinery 134 human 116 Humans 76 TA Engineering (General). Civil engineering (General) 75 TK Electrical engineering. Electronics Nuclear engineering 59 Product design 56 article 56 Article 49 controlled study 44 QA75 Electronic computers. Computer science 41 T Technology (General) 39 Design 38 female 38 male 38 adult 34 nonhuman 33 Sustainable development 29 Decision making 27 Malaysia 27 Sustainability 27 metabolism 27 Animals 26 animal 25 QD Chemistry 24 chemistry 23 TS Manufactures 21 sustainability 21 China 20 genetics 20