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 02, 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 (870.053) 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
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
Metrics
H-Index
i10 Index
Citation Counts
67
218
19,002
* Total H IndexRankings
Ranking Based On Selection: 2
Metrics
H-Index
i10 Index
Citation Counts
62
154
17,419
* Total H IndexRankings
Ranking Based On Selection: 3
Nanoscience/nanotechnology
Materials science
Composite/nanocomposite
Water Research & Inorg. Chem
Metrics
H-Index
i10 Index
Citation Counts
53
232
13,293
* Total H IndexRankings
Ranking Based On Selection: 4
Mathematics
Mathematical Physics
Mathematical Sciences
Metrics
H-Index
i10 Index
Citation Counts
50
133
9,562
* Total H IndexRankings
Ranking Based On Selection: 5
General Relativity
Dark Energy
Modified theories of gravity
Cosmology
Integrability
Metrics
H-Index
i10 Index
Citation Counts
48
148
8,669
* Total H IndexRankings
Ranking Based On Selection: 6
Biotechnology
Microbiology
Enzyme Technology
Metrics
H-Index
i10 Index
Citation Counts
47
164
9,447
* Total H IndexRankings
Ranking Based On Selection: 7
Pharmaceutical Chemistry
Metrics
H-Index
i10 Index
Citation Counts
43
164
7,944
* Total H IndexRankings
Ranking Based On Selection: 8
Sport Chiropractic
Metrics
H-Index
i10 Index
Citation Counts
43
84
5,140
* Total H IndexRankings
Ranking Based On Selection: 9
Algal Biofuels
Biotechnology
Nutrient recovery
Metrics
H-Index
i10 Index
Citation Counts
41
49
7,532
* Total H IndexRankings
Ranking Based On Selection: 10
Environmental Microbiology
Molecular Biology
Emerging Pathogens
Wastewater Treatment
Bioenergy from waste streams
Metrics
H-Index
i10 Index
Citation Counts
37
81
6,082
* Total H IndexRankings
Ranking Based On Selection: 11
Drug development
Metrics
H-Index
i10 Index
Citation Counts
37
79
6,637
* Total H IndexRankings
Ranking Based On Selection: 12
Applied & Theoretical Machine Learning
Knowledge Discovery and Reasoning with Uncertainty
Image and Signal Processing
Metrics
H-Index
i10 Index
Citation Counts
35
94
6,421
* Total H IndexRankings
Ranking Based On Selection: 13
Computational chemistry and Electroanalytical chemistry
Metrics
H-Index
i10 Index
Citation Counts
32
78
4,921
* Total H IndexRankings
Ranking Based On Selection: 14
Tourism
Community-based tourism
Food tourism
Food
Sport event tourism
Metrics
H-Index
i10 Index
Citation Counts
30
56
3,105
* Total H IndexRankings
Ranking Based On Selection: 15
Lignocellulose functionalisation
biocatalysis
bioactive compounds
antioxidants
oxidases
Metrics
H-Index
i10 Index
Citation Counts
30
47
2,964
* Total H IndexRankings
Ranking Based On Selection: 16
Metrics
H-Index
i10 Index
Citation Counts
30
45
2,843
* Total H IndexRankings
Ranking Based On Selection: 17
Mathematical modelling
Metrics
H-Index
i10 Index
Citation Counts
29
50
2,246
* Total H IndexRankings
Ranking Based On Selection: 18
criminolgy
urban studies
ethnography
urban safety
security governance
Metrics
H-Index
i10 Index
Citation Counts
29
62
2,743
* Total H IndexRankings
Ranking Based On Selection: 19
Water and wastewater treatment
Liquid extraction
Adsorption
Metrics
H-Index
i10 Index
Citation Counts
26
65
3,351
* Total H IndexRankings
Ranking Based On Selection: 20
Organic Chemistry
Natural Product Chemistry
Organic Synthesis
Metrics
H-Index
i10 Index
Citation Counts
26
40
3,528
* Total H IndexRankings
Ranking Based On Selection: 21
Natural fiber reinforced polymer composites
Surface treatment of natural fibers
Polymer nanocomposites
Barrier properties
El
Metrics
H-Index
i10 Index
Citation Counts
26
41
2,026
* Total H IndexRankings
Ranking Based On Selection: 22
Food chemistry and processing
Metrics
H-Index
i10 Index
Citation Counts
23
39
1,737
* Total H IndexRankings
Ranking Based On Selection: 23
Electrical
Electronic and Computer Engineering
Metrics
H-Index
i10 Index
Citation Counts
23
63
2,704
* Total H IndexRankings
Ranking Based On Selection: 24
Peacebuilding
restorative justice
inequality
Metrics
H-Index
i10 Index
Citation Counts
23
68
2,230
* Total H IndexRankings
Ranking Based On Selection: 25
Microalgae
Algal Biotechnology
Bioremediation
Metrics
H-Index
i10 Index
Citation Counts
22
25
2,322
Faizal Bux
Metrics
H-Index
i10-Index
Citation Counts
67
218
19,002
Wastewater Technology
Algal Biotechnology
Biofuels
Bioremediation
TA Stenstrom
Metrics
H-Index
i10-Index
Citation Counts
62
154
17,419
Ajay Kumar Mishra
Metrics
H-Index
i10-Index
Citation Counts
53
232
13,293
Nanoscience/nanotechnology
Materials science
Composite/nanocomposite
Water Research & Inorg. Chem
S Moyo
Metrics
H-Index
i10-Index
Citation Counts
50
133
9,562
Mathematics
Mathematical Physics
Mathematical Sciences
Andronikos Paliathanasis
Metrics
H-Index
i10-Index
Citation Counts
48
148
8,669
General Relativity
Dark Energy
Modified theories of gravity
Cosmology
Integrability
Suren Singh
Metrics
H-Index
i10-Index
Citation Counts
47
164
9,447
Biotechnology
Microbiology
Enzyme Technology
Katharigatta Narayanaswamy Venugopala
Metrics
H-Index
i10-Index
Citation Counts
43
164
7,944
Pharmaceutical Chemistry
Henry Pollard
Metrics
H-Index
i10-Index
Citation Counts
43
84
5,140
Ismail Rawat
Metrics
H-Index
i10-Index
Citation Counts
41
49
7,532
Algal Biofuels
Biotechnology
Nutrient recovery
Sheena Kumari
Metrics
H-Index
i10-Index
Citation Counts
37
81
6,082
Environmental Microbiology
Molecular Biology
Emerging Pathogens
Wastewater Treatment
Bioenergy from waste streams
Bharti Odhav
Metrics
H-Index
i10-Index
Citation Counts
37
79
6,637
Bhekisipho Twala
Metrics
H-Index
i10-Index
Citation Counts
35
94
6,421
Applied & Theoretical Machine Learning
Knowledge Discovery and Reasoning with Uncertainty
Image and Signal Processing
Krishna Bisetty
Metrics
H-Index
i10-Index
Citation Counts
32
78
4,921
Computational chemistry and Electroanalytical chemistry
Andrea Giampiccoli
Metrics
H-Index
i10-Index
Citation Counts
30
56
3,105
Tourism
Community-based tourism
Food tourism
Food
Sport event tourism
Tukayi Kudanga
Metrics
H-Index
i10-Index
Citation Counts
30
47
2,964
Lignocellulose functionalisation
biocatalysis
bioactive compounds
antioxidants
oxidases
Kugen Permaul
Metrics
H-Index
i10-Index
Citation Counts
30
45
2,843
Kevin Jan Duffy
Metrics
H-Index
i10-Index
Citation Counts
29
50
2,246
Monique Michal Marks
Metrics
H-Index
i10-Index
Citation Counts
29
62
2,743
criminolgy
urban studies
ethnography
urban safety
security governance
Sudesh Rathilal
Metrics
H-Index
i10-Index
Citation Counts
26
65
3,351
Water and wastewater treatment
Liquid extraction
Adsorption
Francis Shode
Metrics
H-Index
i10-Index
Citation Counts
26
40
3,528
Organic Chemistry
Natural Product Chemistry
Organic Synthesis
Tp Mohan
Metrics
H-Index
i10-Index
Citation Counts
26
41
2,026
Natural fiber reinforced polymer composites
Surface treatment of natural fibers
Polymer nanocomposites
Barrier properties
El
Eric Amonsou
Metrics
H-Index
i10-Index
Citation Counts
23
39
1,737
Food chemistry and processing
Inno Davidson
Metrics
H-Index
i10-Index
Citation Counts
23
63
2,704
Electrical
Electronic and Computer Engineering
Geoff Harris
Metrics
H-Index
i10-Index
Citation Counts
23
68
2,230
Peacebuilding
restorative justice
inequality
Nirmal Renuka
Metrics
H-Index
i10-Index
Citation Counts
22
25
2,322
Microalgae
Algal Biotechnology
Bioremediation