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
Chemical Engineering
Mineral Processing
Electrochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
284
258
0.908
* Total Citation Counts Rankings
Ranking Based On Selection :2
Bioprocess enigneering
biotechnology
Catalysis
Petrochemical Engineering
Biorefining
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146
145
0.993
* Total Citation Counts Rankings
Ranking Based On Selection :3
Chemical and Process Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34
34
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :4
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
19
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :5
Phase equilibria
Supercritical fluid fractionation
Mass transfer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
* Total Citation Counts Rankings
Ranking Based On Selection :6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16
16
1.000
* Total Citation Counts Rankings
Ranking Based On Selection :7
Chemical Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
1
0.091
* Total Citation Counts Rankings
Ranking Based On Selection :8
Chemical engineering
Lignin chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Margreth Tadie
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
284
258
0.908
Chemical Engineering
Mineral Processing
Electrochemistry
Oscar Koku Kplorm Bedzo
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
146
145
0.993
Bioprocess enigneering
biotechnology
Catalysis
Petrochemical Engineering
Biorefining
Ayman Abufalgha
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34
34
1.000
Chemical and Process Engineering
Danielle Lee De Klerk
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20
19
0.950
Neo Motang
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
Phase equilibria
Supercritical fluid fractionation
Mass transfer
Susanna H Du Plessis
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16
16
1.000
Tanya Linde-Meyer
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11
1
0.091
Q Ngiba
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Chemical engineering
Lignin chemistry