Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Renewable Enenrgy
Catalysis
Adsorption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,625
5,257
0.495
* Total Citation Counts Rankings
Ranking Based On Selection :2
Process Systems Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,329
1,975
0.848
* Total Citation Counts Rankings
Ranking Based On Selection :3
Sustainability
Nanotechnology
Drug Delivery
Pharmaceutical Waste Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
738
0.465
* Total Citation Counts Rankings
Ranking Based On Selection :4
Water treatment
Waste management
Green energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
646
350
0.542
Mohammad Ahmad
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,625
5,257
0.495
Renewable Enenrgy
Catalysis
Adsorption
Joseph Zeaiter
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,329
1,975
0.848
Process Systems Engineering
Walid Saad
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
738
0.465
Sustainability
Nanotechnology
Drug Delivery
Pharmaceutical Waste Treatment
Yousef Salameh
American University of Beirut
Beirut, Lebanon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
646
350
0.542
Water treatment
Waste management
Green energy