University, Subject, Country, Region, World
Malaysia 283 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Feb 03, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.057) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
Metrics
H-Index
i10 Index
Citation Counts
112
525
48,334
* Total H IndexRankings
Ranking Based On Selection: 2
Renewable Solar Fuels
Photo-catalysis and Water Splitting
CO2 conversion and Hydrogen Production
Wastewater Treatment
Metrics
H-Index
i10 Index
Citation Counts
82
278
19,122
* Total H IndexRankings
Ranking Based On Selection: 3
Heterogeneous Catalysts
Biodiesel
Nano-magnetic Catalysts
Bio-based Catalysts
Metrics
H-Index
i10 Index
Citation Counts
78
302
21,314
* Total H IndexRankings
Ranking Based On Selection: 4
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
Metrics
H-Index
i10 Index
Citation Counts
71
205
18,654
* Total H IndexRankings
Ranking Based On Selection: 5
Process System Engineering
Modelling and Process Optimization
Direct Methanol fuel cell
Fuel cell technology
Metrics
H-Index
i10 Index
Citation Counts
70
215
20,744
* Total H IndexRankings
Ranking Based On Selection: 6
Metrics
H-Index
i10 Index
Citation Counts
66
179
23,740
* Total H IndexRankings
Ranking Based On Selection: 7
Renewable energy
biomass
biodiesel
bioethanol
microalgae
Metrics
H-Index
i10 Index
Citation Counts
65
150
15,355
* Total H IndexRankings
Ranking Based On Selection: 8
Biomass energy
catalysis
gasification
adsorption
environment
Metrics
H-Index
i10 Index
Citation Counts
62
157
13,372
* Total H IndexRankings
Ranking Based On Selection: 9
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
61
211
13,558
* Total H IndexRankings
Ranking Based On Selection: 10
REE detection
H2S conversion
Ionic Liquids
MOF
Li-ion Battery
Metrics
H-Index
i10 Index
Citation Counts
61
219
10,688
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* Total H IndexRankings
Ranking Based On Selection: 11
Ionic liquids
Biopolymer and Polymer Composite ...
Metrics
H-Index
i10 Index
Citation Counts
58
161
9,968
* Total H IndexRankings
Ranking Based On Selection: 12
Oils and Fats Processing
Renewable oil
Emulsions
Metrics
H-Index
i10 Index
Citation Counts
57
131
11,259
* Total H IndexRankings
Ranking Based On Selection: 13
Microalgae Technology
Food Waste
Biochemical Engineering
Biomass Conversion
Metrics
H-Index
i10 Index
Citation Counts
55
176
10,746
* Total H IndexRankings
Ranking Based On Selection: 14
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
55
183
13,819
* Total H IndexRankings
Ranking Based On Selection: 15
Activated carbon
Adsorption
Pyrolysis
Metrics
H-Index
i10 Index
Citation Counts
54
134
8,919
* Total H IndexRankings
Ranking Based On Selection: 16
Process Safety
CO2 Capture
Separation Processes
Metrics
H-Index
i10 Index
Citation Counts
53
220
9,902
* Total H IndexRankings
Ranking Based On Selection: 17
Ionic liquids
biotechnology
environment
pharmaceutics
Metrics
H-Index
i10 Index
Citation Counts
52
148
9,697
* Total H IndexRankings
Ranking Based On Selection: 18
Chemical Engineering
Catalysis
Biomass
Metrics
H-Index
i10 Index
Citation Counts
51
165
9,585
* Total H IndexRankings
Ranking Based On Selection: 19
Reaction Engineering
Heterogeneous catalysis
Wastewater treatment
Microbial fuel cell
CO2 reduction
Metrics
H-Index
i10 Index
Citation Counts
51
165
7,813
* Total H IndexRankings
Ranking Based On Selection: 20
Chemical Engineering
Metrics
H-Index
i10 Index
Citation Counts
50
133
7,735
* Total H IndexRankings
Ranking Based On Selection: 21
Membranes
Cultivation of Algae
Bioprocessing Engineering
Metrics
H-Index
i10 Index
Citation Counts
48
132
8,577
* Total H IndexRankings
Ranking Based On Selection: 22
Oil & Gas Technology
Wastewater Treatment
Natural Products
Stabilization and Demulsification of Crude Oil Emulsions ...
Metrics
H-Index
i10 Index
Citation Counts
46
140
8,908
* Total H IndexRankings
Ranking Based On Selection: 23
Magnetic Nanoparticles
Magnetic Separation
Magnetophoresis
Colloid and Interface Science
Metrics
H-Index
i10 Index
Citation Counts
46
84
7,764
* Total H IndexRankings
Ranking Based On Selection: 24
Materials Chemistry
Environmental Chemistry
Waste to Resources
Metrics
H-Index
i10 Index
Citation Counts
45
108
9,995
* Total H IndexRankings
Ranking Based On Selection: 25
Chemical Engineering
Membrane
Absorption
Process Modeling and Scale-up
Computational Fluid
Metrics
H-Index
i10 Index
Citation Counts
45
119
5,941
Abdul Rahman Mohamed
Universiti Sains Malaysia
Penang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
112
525
48,334
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
Muhammad Tahir
Metrics
H-Index
i10-Index
Citation Counts
82
278
19,122
Renewable Solar Fuels
Photo-catalysis and Water Splitting
CO2 conversion and Hydrogen Production
Wastewater Treatment
Umer Rashid
Universiti Putra Malaysia
Seri Kembangan, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
78
302
21,314
Heterogeneous Catalysts
Biodiesel
Nano-magnetic Catalysts
Bio-based Catalysts
Ahmad Zuhairi Abdullah
Universiti Sains Malaysia
Penang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
71
205
18,654
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
Siti Kartom Kamarudin
Metrics
H-Index
i10-Index
Citation Counts
70
215
20,744
Process System Engineering
Modelling and Process Optimization
Direct Methanol fuel cell
Fuel cell technology
Siang Piao Chai
Monash University Malaysia
Selangor, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
66
179
23,740
Man Kee Lam
Metrics
H-Index
i10-Index
Citation Counts
65
150
15,355
Renewable energy
biomass
biodiesel
bioethanol
microalgae
Asadullah Mohammad
Universiti Teknologi MARA
Shah Alam, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
62
157
13,372
Biomass energy
catalysis
gasification
adsorption
environment
Robiah Yunus
Universiti Putra Malaysia
Seri Kembangan, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
61
211
13,558
Mohamad Azmi Bustam
Metrics
H-Index
i10-Index
Citation Counts
61
219
10,688
REE detection
H2S conversion
Ionic Liquids
MOF
Li-ion Battery
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Zakaria Man
Metrics
H-Index
i10-Index
Citation Counts
58
161
9,968
Ionic liquids
Biopolymer and Polymer Composite ...
Seng Chan
Monash University Malaysia
Selangor, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
57
131
11,259
Oils and Fats Processing
Renewable oil
Emulsions
Kuan Shiong Khoo
Metrics
H-Index
i10-Index
Citation Counts
55
176
10,746
Microalgae Technology
Food Waste
Biochemical Engineering
Biomass Conversion
Luqman Chuah Abdullah Chuah Teong Guan Chuah Abdullah Luqman Chuah Teong Guan
Universiti Putra Malaysia
Seri Kembangan, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
55
183
13,819
Mohd Azmier Ahmad
Universiti Sains Malaysia
Penang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
54
134
8,919
Activated carbon
Adsorption
Pyrolysis
Azmi Mohd Shariff
Metrics
H-Index
i10-Index
Citation Counts
53
220
9,902
Process Safety
CO2 Capture
Separation Processes
Muhammad Moniruzzaman
Metrics
H-Index
i10-Index
Citation Counts
52
148
9,697
Ionic liquids
biotechnology
environment
pharmaceutics
Yoshimitsu Uemura
Metrics
H-Index
i10-Index
Citation Counts
51
165
9,585
Chemical Engineering
Catalysis
Biomass
Maksudur Rahman Khan
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
51
165
7,813
Reaction Engineering
Heterogeneous catalysis
Wastewater treatment
Microbial fuel cell
CO2 reduction
Murugesan Thanabalan
Metrics
H-Index
i10-Index
Citation Counts
50
133
7,735
Ir Ani Idris
Metrics
H-Index
i10-Index
Citation Counts
48
132
8,577
Membranes
Cultivation of Algae
Bioprocessing Engineering
Abdurahman Nour
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
46
140
8,908
Oil & Gas Technology
Wastewater Treatment
Natural Products
Stabilization and Demulsification of Crude Oil Emulsions ...
Jitkang Lim
Universiti Sains Malaysia
Penang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
46
84
7,764
Magnetic Nanoparticles
Magnetic Separation
Magnetophoresis
Colloid and Interface Science
Oh Wen Da
Universiti Sains Malaysia
Penang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
45
108
9,995
Materials Chemistry
Environmental Chemistry
Waste to Resources
Lau Kok Keong
Metrics
H-Index
i10-Index
Citation Counts
45
119
5,941
Chemical Engineering
Membrane
Absorption
Process Modeling and Scale-up
Computational Fluid