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
Environmental Technology
Advanced Treatment
Water Splitting
Photocatalysis
Membrane Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,562
4,654
0.615
* Total Citation Counts Rankings
Ranking Based On Selection :2
Water wastewater treatment
ozonation
tetracycline
LSI
Arsenic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
658
367
0.558
* Total Citation Counts Rankings
Ranking Based On Selection :3
Aerosol Engineering and Science
Air Pollution Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
268
49
0.183
* Total Citation Counts Rankings
Ranking Based On Selection :4
Environmental engineering
water electrolysis
wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
253
253
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :5
Nanomaterials
Photocatalysis
Antibiotic Degradation
MDRBs Disinfection
Wastewater Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90
90
1.000
Young-Ho Ahn,
Yeungnam University
Gyeongsan, South Korea
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,562
4,654
0.615
Environmental Technology
Advanced Treatment
Water Splitting
Photocatalysis
Membrane Technology
M Hammad Khan
Yeungnam University
Gyeongsan, South Korea
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
658
367
0.558
Water wastewater treatment
ozonation
tetracycline
LSI
Arsenic
Hyuksang Chang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
268
49
0.183
Aerosol Engineering and Science
Air Pollution Engineering
Deepak Chauhan
Yeungnam University
Gyeongsan, South Korea
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
253
253
1.000
Environmental engineering
water electrolysis
wastewater treatment
Mohammad Obaid Qamar|Mohd Obaid Qamar, Obaid Qamar
Yeungnam University
Gyeongsan, South Korea
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90
90
1.000
Nanomaterials
Photocatalysis
Antibiotic Degradation
MDRBs Disinfection
Wastewater Treatment