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 Jan 30, 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 (873.690) 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
Combustion
Nanofluid Heat Transfer
Renewable Energy
Computational Fluid Dynamics
Metrics
H-Index
i10 Index
Citation Counts
86
274
21,977
* Total H IndexRankings
Ranking Based On Selection: 2
Materials Sustainability
Energy Conversion Materials
Energy Storage Materials
Metrics
H-Index
i10 Index
Citation Counts
73
254
21,192
* Total H IndexRankings
Ranking Based On Selection: 3
Nanobiotechnology
Nanomedicine
Electrospinning
Stem cells
Tissue engineering
Metrics
H-Index
i10 Index
Citation Counts
69
134
18,537
* Total H IndexRankings
Ranking Based On Selection: 4
Green Energy
Biorenewables
Solar energy
Sustainability of energy systems
Exergy analysis
Metrics
H-Index
i10 Index
Citation Counts
64
180
15,265
* Total H IndexRankings
Ranking Based On Selection: 5
Mechanical Engineering
Nanofluid heat transfer
Advanced Material Processing
Machining
Nanocellulose
Metrics
H-Index
i10 Index
Citation Counts
59
238
12,564
* Total H IndexRankings
Ranking Based On Selection: 6
Metrics
H-Index
i10 Index
Citation Counts
58
145
10,840
* Total H IndexRankings
Ranking Based On Selection: 7
Engineering Technology
Membrane technologies
Haemodialysis
Energy
Water&Wastewater
Metrics
H-Index
i10 Index
Citation Counts
55
126
10,767
* Total H IndexRankings
Ranking Based On Selection: 8
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: 9
Mechanical Engineering
Renewable Energy
BTMS
Nanofluid Heat Transfer
PCM
Metrics
H-Index
i10 Index
Citation Counts
50
155
7,715
* Total H IndexRankings
Ranking Based On Selection: 10
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: 11
carbon
energy storage
sensor
Metrics
H-Index
i10 Index
Citation Counts
45
82
5,211
* Total H IndexRankings
Ranking Based On Selection: 12
Pavement Engineering
Highway Engineering
Civil Engineering
Metrics
H-Index
i10 Index
Citation Counts
44
176
7,660
* Total H IndexRankings
Ranking Based On Selection: 13
Solar Photovoltaic Materials
Energy Storage Materials
3D Printing Materials
Themal Energy Storage
Metrics
H-Index
i10 Index
Citation Counts
42
110
6,566
* Total H IndexRankings
Ranking Based On Selection: 14
Pavement Engineering
Highway Engineering
Civil Engineering
Cement Concrete
Bituminous Materials
Metrics
H-Index
i10 Index
Citation Counts
41
185
7,529
* Total H IndexRankings
Ranking Based On Selection: 15
Catalysis
Nanoparticles
Biomass Valorisation
Selective Oxidation
Renewable Energy
Metrics
H-Index
i10 Index
Citation Counts
41
90
7,259
* Total H IndexRankings
Ranking Based On Selection: 16
Biodiesel
Sustainable Energy
Heterogeneous Catalysis
Green Energy
Renewable Energy
Metrics
H-Index
i10 Index
Citation Counts
41
82
6,784
* Total H IndexRankings
Ranking Based On Selection: 17
Circular Supply Chain
Halal Supply Chain Management
Halal Logistics
Sustainable Digital Business
Metrics
H-Index
i10 Index
Citation Counts
40
102
7,424
* Total H IndexRankings
Ranking Based On Selection: 18
Combinatorial t-way testing
Search based Software Engineering
Computational Intelligence
Metrics
H-Index
i10 Index
Citation Counts
39
139
5,517
* Total H IndexRankings
Ranking Based On Selection: 19
Separation Technology
Enzyme Technology
Specialty Chemicals
Pharmaceutical Technology
Engineering Technology
Metrics
H-Index
i10 Index
Citation Counts
39
86
5,182
* Total H IndexRankings
Ranking Based On Selection: 20
Heterogeneous Catalysis
Chemical Reaction Engineering
Advanced Material
Metrics
H-Index
i10 Index
Citation Counts
36
89
4,166
* Total H IndexRankings
Ranking Based On Selection: 21
Population balance
CFD
Fluid mixing
Biofuel
Microencapsulation
Metrics
H-Index
i10 Index
Citation Counts
36
80
4,826
* Total H IndexRankings
Ranking Based On Selection: 22
Material Sciences
Energy Materials
Renewable Energy
Metrics
H-Index
i10 Index
Citation Counts
35
52
4,209
* Total H IndexRankings
Ranking Based On Selection: 23
Information Systems
IS/IT management
Digital sustainability
Metrics
H-Index
i10 Index
Citation Counts
34
70
3,593
* Total H IndexRankings
Ranking Based On Selection: 24
Organic chemistry/Medicinal Chemistry/ Organic Synthesis
Metrics
H-Index
i10 Index
Citation Counts
34
80
3,441
* Total H IndexRankings
Ranking Based On Selection: 25
Biotechnology
Metrics
H-Index
i10 Index
Citation Counts
33
69
3,936
Rizalman Mamat
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
86
274
21,977
Combustion
Nanofluid Heat Transfer
Renewable Energy
Computational Fluid Dynamics
Rajan Jose
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
73
254
21,192
Materials Sustainability
Energy Conversion Materials
Energy Storage Materials
Venugopal Jayarama Reddy
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
69
134
18,537
Nanobiotechnology
Nanomedicine
Electrospinning
Stem cells
Tissue engineering
Sudhakar Kumarasamy|K Sudhakar
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
64
180
15,265
Green Energy
Biorenewables
Solar energy
Sustainability of energy systems
Exergy analysis
Kumaran Kadirgama
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
59
238
12,564
Mechanical Engineering
Nanofluid heat transfer
Advanced Material Processing
Machining
Nanocellulose
Wh Azmi|W A W Hamzah
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
58
145
10,840
Zularisam AB Wahid
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
55
126
10,767
Engineering Technology
Membrane technologies
Haemodialysis
Energy
Water&Wastewater
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
MMNoor|Muhamad Mat Noor, Muhamad M. Noor, Muhamad M.N.
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
50
155
7,715
Mechanical Engineering
Renewable Energy
BTMS
Nanofluid Heat Transfer
PCM
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 ...
Kwok Feng Chong
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
45
82
5,211
carbon
energy storage
sensor
Mohd Rosli Hainin
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
44
176
7,660
Pavement Engineering
Highway Engineering
Civil Engineering
Mahendran Samykano
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
42
110
6,566
Solar Photovoltaic Materials
Energy Storage Materials
3D Printing Materials
Themal Energy Storage
Ramadhansyah Putra Jaya
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
41
185
7,529
Pavement Engineering
Highway Engineering
Civil Engineering
Cement Concrete
Bituminous Materials
Mohd Hasbi AB Rahim
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
41
90
7,259
Catalysis
Nanoparticles
Biomass Valorisation
Selective Oxidation
Renewable Energy
Gaanty Pragas Maniam
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
41
82
6,784
Biodiesel
Sustainable Energy
Heterogeneous Catalysis
Green Energy
Renewable Energy
Yudi Fernando
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
40
102
7,424
Circular Supply Chain
Halal Supply Chain Management
Halal Logistics
Sustainable Digital Business
Kamal Z Zamli
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
39
139
5,517
Combinatorial t-way testing
Search based Software Engineering
Computational Intelligence
Mimi Sakinah Abdul Munaim
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
39
86
5,182
Separation Technology
Enzyme Technology
Specialty Chemicals
Pharmaceutical Technology
Engineering Technology
Herma Dina Setiabudi
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
36
89
4,166
Heterogeneous Catalysis
Chemical Reaction Engineering
Advanced Material
Jolius Gimbun
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
36
80
4,826
Population balance
CFD
Fluid mixing
Biofuel
Microencapsulation
Jamil Ismail
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
35
52
4,209
Material Sciences
Energy Materials
Renewable Energy
Mohammed A Al Sharafi|Mohammed Abdullah Ali Al-Sharafi, MA Al-Sharafi, Mohammed Al-Sharafi
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
34
70
3,593
Information Systems
IS/IT management
Digital sustainability
Muhammad Nadeem Akhtar
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
34
80
3,441
Organic chemistry/Medicinal Chemistry/ Organic Synthesis
Muhammad Mukhtar
Universiti Malaysia Pahang
Pahang, Malaysia
Metrics
H-Index
i10-Index
Citation Counts
33
69
3,936