Citation Rankings
Highly Cited Researchers
Universiti Sains Malaysia Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
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
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Medical Epidemiology
Disease Modelling
Biostatistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
114,892
104,443
0.909
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :2
Technology Acceptance
Technology Management
Operations Management
PLS
Technology Adoption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,153
43,284
0.732
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :3
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,336
26,064
0.563
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
Environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,147
23,275
0.595
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Public Health Nutrition
Nutritional Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,816
22,456
0.807
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Food Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,937
20,659
0.440
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Food Science and Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,547
18,059
0.538
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
Biopolymer
Biocomposite
Bioplastic
Aerogel
Nanofiber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,512
17,783
0.624
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
Pharmacy Practice Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,536
12,688
0.649
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Health economics
Consumer and household economics
Environmental economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,671
12,310
0.900
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
IoT
AI
Big Data
network
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,070
12,179
0.713
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
rubber
plastic
recycling
blends
composites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,076
11,649
0.430
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Analytical and Environmental Chemistry
Water pollutants
Water and wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,506
10,812
0.697
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Polymer Composites
Impact Dynamics
Sandwich Structures
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,055
10,379
0.646
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Water Treatment Technology
Water Security Management
Waste Utilization
Water-Food Nexus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,563
10,095
0.544
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,768
9,809
0.552
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
financial economics
Asia-Pacific
energy economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,978
9,678
0.646
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Utilization of bioresources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,091
9,440
0.587
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Biodegradable polymers
polyhydroxyalkanoates
rubber degradation
oil palm biomass
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,342
9,205
0.563
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Wood
non-wood
durability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,718
8,946
0.569
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
Medical Microbiology
Immunology
Science communication
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,171
8,816
0.416
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
Materials Chemistry
Environmental Chemistry
Waste to Resources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,112
8,417
0.924
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Sustainability Reporting
CSR and Corporate Governance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,754
8,412
0.716
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Lignocellulosic Materials
Microbial Fuel Cells
Electrode Fabrication
Biocomposite
Petroleum Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,205
8,316
0.815
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,191
8,281
0.679
* Last 6 Years Citation Counts Rankings
Rankings
657
2
1
Ranking Based On Selection: 1
Kamarul Imran Musa
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
114,892
104,443
0.909
* Last 6 Years Citation Counts Rankings
Rankings
3,574
8
2
Ranking Based On Selection: 2
T Ramayah|Ramayah Thurasamy, Thurasamy, R.
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,153
43,284
0.732
Technology Acceptance
Technology Management
Operations Management
PLS
Technology Adoption
* Last 6 Years Citation Counts Rankings
Rankings
7,919
16
3
Ranking Based On Selection: 3
Abdul Rahman Mohamed
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,336
26,064
0.563
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
* Last 6 Years Citation Counts Rankings
Rankings
9,433
20
4
Ranking Based On Selection: 4
Hamidi Abdul Aziz
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,147
23,275
0.595
Environmental engineering
* Last 6 Years Citation Counts Rankings
Rankings
9,987
22
5
Ranking Based On Selection: 5
Leng Huat Foo
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,816
22,456
0.807
Public Health Nutrition
Nutritional Epidemiology
* Last 6 Years Citation Counts Rankings
Rankings
11,301
25
6
Ranking Based On Selection: 6
Cheng LH
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,937
20,659
0.440
* Last 6 Years Citation Counts Rankings
Rankings
13,843
35
7
Ranking Based On Selection: 7
AA Karim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,547
18,059
0.538
Food Science and Technology
* Last 6 Years Citation Counts Rankings
Rankings
14,185
37
8
Ranking Based On Selection: 8
Abdul Khalil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,512
17,783
0.624
* Last 6 Years Citation Counts Rankings
Rankings
23,723
72
9
Ranking Based On Selection: 9
Mohamed Azmi Hassali
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,536
12,688
0.649
Pharmacy Practice Research
* Last 6 Years Citation Counts Rankings
Rankings
24,781
81
10
Ranking Based On Selection: 10
Andrew KG Tan
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,671
12,310
0.900
Health economics
Consumer and household economics
Environmental economics
* Last 6 Years Citation Counts Rankings
Rankings
25,170
83
11
Ranking Based On Selection: 11
Othman Jalil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,070
12,179
0.713
* Last 6 Years Citation Counts Rankings
Rankings
26,927
92
12
Ranking Based On Selection: 12
Hanafi Ismail
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,076
11,649
0.430
rubber
plastic
recycling
blends
composites
* Last 6 Years Citation Counts Rankings
Rankings
30,171
100
13
Ranking Based On Selection: 13
Mohd Rafatullah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,506
10,812
0.697
Analytical and Environmental Chemistry
Water pollutants
Water and wastewater treatment
* Last 6 Years Citation Counts Rankings
Rankings
32,121
112
14
Ranking Based On Selection: 14
Hazizan Md Akil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,055
10,379
0.646
Polymer Composites
Impact Dynamics
Sandwich Structures
* Last 6 Years Citation Counts Rankings
Rankings
33,485
120
15
Ranking Based On Selection: 15
Keng Yuen Foo
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,563
10,095
0.544
Water Treatment Technology
Water Security Management
Waste Utilization
Water-Food Nexus
* Last 6 Years Citation Counts Rankings
Rankings
34,856
128
16
Ranking Based On Selection: 16
Ahmad Zuhairi Abdullah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,768
9,809
0.552
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
* Last 6 Years Citation Counts Rankings
Rankings
35,505
131
17
Ranking Based On Selection: 17
Hooi Hooi Lean
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,978
9,678
0.646
financial economics
Asia-Pacific
energy economics
* Last 6 Years Citation Counts Rankings
Rankings
36,866
138
18
Ranking Based On Selection: 18
Rokiah Hashim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,091
9,440
0.587
* Last 6 Years Citation Counts Rankings
Rankings
38,301
144
19
Ranking Based On Selection: 19
Kumar Sudesh
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,342
9,205
0.563
Biodegradable polymers
polyhydroxyalkanoates
rubber degradation
oil palm biomass
* Last 6 Years Citation Counts Rankings
Rankings
39,961
151
20
Ranking Based On Selection: 20
Othman Sulaiman
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,718
8,946
0.569
Wood
non-wood
durability
* Last 6 Years Citation Counts Rankings
Rankings
40,822
155
21
Ranking Based On Selection: 21
Khayriyyah Mohd Hanafiah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,171
8,816
0.416
Medical Microbiology
Immunology
Science communication
* Last 6 Years Citation Counts Rankings
Rankings
43,623
162
22
Ranking Based On Selection: 22
Oh Wen Da
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,112
8,417
0.924
Materials Chemistry
Environmental Chemistry
Waste to Resources
* Last 6 Years Citation Counts Rankings
Rankings
43,662
163
23
Ranking Based On Selection: 23
Azlan Amran
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,754
8,412
0.716
Sustainability Reporting
CSR and Corporate Governance
* Last 6 Years Citation Counts Rankings
Rankings
44,415
167
24
Ranking Based On Selection: 24
Mohamad Nasir Mohamad Ibrahim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,205
8,316
0.815
Lignocellulosic Materials
Microbial Fuel Cells
Electrode Fabrication
Biocomposite
Petroleum Chemistry
* Last 6 Years Citation Counts Rankings
Rankings
44,695
168
25
Ranking Based On Selection: 25
Afidah Abdul Rahim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,191
8,281
0.679