TJ Mechanical engineering and machinery 199 human 180 Humans 150 TP Chemical technology 139 TA Engineering (General). Civil engineering (General) 112 female 96 male 94 TK Electrical engineering. Electronics Nuclear engineering 92 Article 82 adult 73 Female 67 Male 65 controlled study 61 procedures 60 chemistry 54 Nanostructured materials 50 Adult 43 Scanning electron microscopy 41 QD Chemistry 40 middle aged 37 article 36 Adsorption 35 QC Physics 34 Microstructure 33 Middle Aged 33 Sustainable development 32 Morphology 30 diagnostic imaging 30 Compressive strength 29 Q Science (General) 27