Sustainable development 164 human 130 Nanostructured materials 123 Humans 114 Surveys 84 Manufacture 71 Malaysia 63 Construction industry 58 COVID-19 54 Thermoelectric equipment 50 Palm oil 49 female 45 male 44 Electronic equipment 42 Environmental technology 42 Tensile strength 39 Decision making 38 Scanning electron microscopy 38 Planning 37 Students 36 adult 35 controlled study 34 Forecasting 33 Article 32 Optimization 31 Compressive strength 29 Surveying 29 Sol-gels 28 Costs 27 Reinforced concrete 27