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
Solar Thermal
Photovoltaic/Thermal
Photovoltaic
Nano-PCM
Solar Energy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,614
10,755
0.736
* Total Citation Counts Rankings
Ranking Based On Selection :2
Novel drug delivery systems
Clinical outcomes research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,177
4,399
0.361
* Total Citation Counts Rankings
Ranking Based On Selection :3
Super Green Hydrogen
Sustainable Energy
Superoxide Ion
Green Engineering
Deep Eutectic Solvents
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,432
8,817
0.771
* Total Citation Counts Rankings
Ranking Based On Selection :4
Lipid and Lipoprotein Disorders
Familial hypercholesterolemia
Cardiovascular Disease risk factors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,140
5,068
0.710
* Total Citation Counts Rankings
Ranking Based On Selection :5
Energy and Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,089
3,431
0.484
* Total Citation Counts Rankings
Ranking Based On Selection :6
Mixed-valent iron minerals
Magnetite
Advanced Oxidation
Environmental Remediation
Fenton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,724
6,151
0.915
* Total Citation Counts Rankings
Ranking Based On Selection :7
Polymer nanocomposites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,541
3,690
0.666
* Total Citation Counts Rankings
Ranking Based On Selection :8
Vision
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,390
2,340
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :9
Health Outcomes Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,633
2,991
0.646
* Total Citation Counts Rankings
Ranking Based On Selection :10
HVACR
Energy Renewal.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,478
3,161
0.706
* Total Citation Counts Rankings
Ranking Based On Selection :11
Applied plant molecular breeding
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,185
1,339
0.320
* Total Citation Counts Rankings
Ranking Based On Selection :12
medical informatics
medical education
e-learning
m-learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,985
2,385
0.598
* Total Citation Counts Rankings
Ranking Based On Selection :13
Obesity
Inflammation
Metabolism
Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,640
1,579
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :14
Helping Others
Second interest
Teaching.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,519
283
0.080
* Total Citation Counts Rankings
Ranking Based On Selection :15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,479
2,634
0.757
* Total Citation Counts Rankings
Ranking Based On Selection :16
Well testing
EOR
Reservoir Managment and Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,361
1,862
0.554
* Total Citation Counts Rankings
Ranking Based On Selection :17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,019
1,331
0.441
* Total Citation Counts Rankings
Ranking Based On Selection :18
Secondary metabolites
Mevalonic acid pathways
essential oil
Irradiated polysaccharides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,964
1,609
0.543
* Total Citation Counts Rankings
Ranking Based On Selection :19
Clinical medicine
immunology
microbiology
surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,921
862
0.295
* Total Citation Counts Rankings
Ranking Based On Selection :20
Diabetes
Autism
mental health
CNCD
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,852
1,393
0.488
* Total Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,734
1,535
0.561
* Total Citation Counts Rankings
Ranking Based On Selection :22
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,486
989
0.398
* Total Citation Counts Rankings
Ranking Based On Selection :23
Liquefaction
Regasification
Process Systems Engineering
Water Harvesting
LNG
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,442
1,899
0.778
* Total Citation Counts Rankings
Ranking Based On Selection :24
Knowledge Management System
Knowledge Management
Learning Management Systems
Knowledge Economy
IS/ICT investments
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,264
1,460
0.645
* Total Citation Counts Rankings
Ranking Based On Selection :25
Solar energy application
Laser ablation
PVD
Wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,121
1,746
0.823
Hussein A Kazem
Sohar University
Sohar, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,614
10,755
0.736
Solar Thermal
Photovoltaic/Thermal
Photovoltaic
Nano-PCM
Solar Energy
Alka Ahuja
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,177
4,399
0.361
Maan Hayyan
Muscat University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,432
8,817
0.771
Super Green Hydrogen
Sustainable Energy
Superoxide Ion
Green Engineering
Deep Eutectic Solvents
Khalid Al Rasadi
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,140
5,068
0.710
Lipid and Lipoprotein Disorders
Familial hypercholesterolemia
Cardiovascular Disease risk factors
Sabah Ahmed Abdul Wahab Al Sulaiman
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,089
3,431
0.484
Muhammad Usman
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,724
6,151
0.915
Mixed-valent iron minerals
Magnetite
Advanced Oxidation
Environmental Remediation
Fenton
Aamir Hussain Bhat
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,541
3,690
0.666
Barry Winn
Sohar University
Sohar, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,390
2,340
0.434
Ibrahim Al Zakwani
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,633
2,991
0.646
Shahid Ali Khan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,478
3,161
0.706
Hesham Agrama
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,185
1,339
0.320
Ken Masters
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,985
2,385
0.598
Shaikh Mizanoor Rahman
University of Nizwa
Nizwa, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,640
1,579
0.434
Lamk Lamki
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,519
283
0.080
Myo Tay Zar Myint
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,479
2,634
0.757
Ali S Al Bemani Al Bemani
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,361
1,862
0.554
Anvar Kacimov
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,019
1,331
0.441
Mohammad Idrees
Dhofar University
Salalah, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,964
1,609
0.543
Secondary metabolites
Mevalonic acid pathways
essential oil
Irradiated polysaccharides
Eugene Johnson
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,921
862
0.295
Mohammad Al Shafaee
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,852
1,393
0.488
Syed Abdullah Gilani
University of Nizwa
Nizwa, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,734
1,535
0.561
Faisal Mnif
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,486
989
0.398
Mohd Shariq Khan
Dhofar University
Salalah, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,442
1,899
0.778
Liquefaction
Regasification
Process Systems Engineering
Water Harvesting
LNG
Kamla Ali Al Busaidi
Sultan Qaboos University
Muscat, Oman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,264
1,460
0.645
Knowledge Management System
Knowledge Management
Learning Management Systems
Knowledge Economy
IS/ICT investments
Mohamed Salah Mahmoud
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,121
1,746
0.823
Solar energy application
Laser ablation
PVD
Wastewater treatment