Citation Rankings
Highly Cited Researchers

Engineering & Technology / Environmental Science & Engineering Highly Cited Researchers Citation Rankings 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
Pakistan
Abdul Sattar Nizami
Waste biorefinery
Waste-to-energy
Biofuels
Circular economy
Bioeconomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,527
14,288
0.815
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Pakistan
Laila Shahzad
Climate Change
Disaster Risk Reduction
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
442
438
0.991
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Pakistan
Gul Zareen Ghafoor
Climate Change
Health and Environment
Environmental Microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
220
213
0.968
* Total Citation Counts Rankings
Rankings
48,578
Pakistan
63
1
Ranking Based On Selection: 1
Abdul Sattar Nizami
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,527
14,288
0.815
Waste biorefinery
Waste-to-energy
Biofuels
Circular economy
Bioeconomy
* Total Citation Counts Rankings
Rankings
967,796
Pakistan
5,400
51
Ranking Based On Selection: 2
Laila Shahzad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
442
438
0.991
* Total Citation Counts Rankings
Rankings
1,254,277
Pakistan
8,509
79
Ranking Based On Selection: 3
Gul Zareen Ghafoor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
220
213
0.968
Climate Change
Health and Environment
Environmental Microbiology