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The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 211 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 5 years. As of Jan 04, 2026, 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 (1.131.911) 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 Index Rankings
Rankings
5,263
World Rank
9
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Reaction Engineering & Catalysis | Air Pollution and Waste Water Control Engineering | Fuel Technology | Nanoscience & Nanotechno
Reaction Engineering & Catalysis | Air Pollution and Waste Water Control Engineering | Fuel Technology | Nanoscience & Nanotechno
H-Index Metrics
-
H-Index120
-
i10 Index558
-
Citation Counts56,467
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* Total H Index Rankings
Rankings
18,126
World Rank
29
Country Rank
4
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
2D Materials | Photocatalysis | Green hydrogen | Energy storage | CO2 conversio
2D Materials | Photocatalysis | Green hydrogen | Energy storage | CO2 conversio
H-Index Metrics
-
H-Index86
-
i10 Index286
-
Citation Counts21,932
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* Total H Index Rankings
Rankings
19,761
World Rank
38
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Heterogeneous Catalysts | Biodiesel | Nano-magnetic Catalysts | Bio-based Catalyst
Heterogeneous Catalysts | Biodiesel | Nano-magnetic Catalysts | Bio-based Catalyst
H-Index Metrics
-
H-Index84
-
i10 Index338
-
Citation Counts24,189
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* Total H Index Rankings
Rankings
21,631
World Rank
43
Country Rank
2
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Chemical engineering | fuel cell | hydrogen energy | drying technology | food technology
Chemical engineering | fuel cell | hydrogen energy | drying technology | food technology
H-Index Metrics
-
H-Index82
-
i10 Index292
-
Citation Counts26,701
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* Total H Index Rankings
Rankings
27,755
World Rank
64
Country Rank
8
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Chemical reaction | renewable energy | environmental engineering | oleochemical engineerin
Chemical reaction | renewable energy | environmental engineering | oleochemical engineerin
H-Index Metrics
-
H-Index76
-
i10 Index218
-
Citation Counts21,220
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* Total H Index Rankings
Rankings
30,114
World Rank
70
Country Rank
5
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Process System Engineering | Modelling and Process Optimization | Direct Methanol fuel cell | Fuel cell technolog
Process System Engineering | Modelling and Process Optimization | Direct Methanol fuel cell | Fuel cell technolog
H-Index Metrics
-
H-Index74
-
i10 Index226
-
Citation Counts23,188
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* Total H Index Rankings
Rankings
34,084
World Rank
81
Country Rank
4
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Renewable energy | biomass | biodiesel | bioethanol | microalga
Renewable energy | biomass | biodiesel | bioethanol | microalga
H-Index Metrics
-
H-Index71
-
i10 Index167
-
Citation Counts17,662
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* Total H Index Rankings
Rankings
34,211
World Rank
85
Country Rank
2
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
40,596
World Rank
105
Country Rank
3
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Microalgae Technology | Food Waste | Biochemical Engineering | Biomass Conversio
Microalgae Technology | Food Waste | Biochemical Engineering | Biomass Conversio
H-Index Metrics
-
H-Index67
-
i10 Index217
-
Citation Counts16,069
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* Total H Index Rankings
Rankings
41,324
World Rank
111
Country Rank
2
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
Biomass energy | catalysis | gasification | adsorption | environmen
Biomass energy | catalysis | gasification | adsorption | environmen
H-Index Metrics
-
H-Index67
-
i10 Index167
-
Citation Counts14,593
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* Total H Index Rankings
Rankings
45,076
World Rank
120
Country Rank
5
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
REE detection | H2S conversion | Ionic Liquids | Metal Organic Framework(MOF) | Electrochemistr
REE detection | H2S conversion | Ionic Liquids | Metal Organic Framework(MOF) | Electrochemistr
H-Index Metrics
-
H-Index65
-
i10 Index230
-
Citation Counts12,148
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* Total H Index Rankings
Rankings
47,204
World Rank
129
Country Rank
19
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
56,751
World Rank
167
Country Rank
3
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
Oils and Fats Processing | Lipids extraction | Lipid analyses | Biofuel | Emulsion
Oils and Fats Processing | Lipids extraction | Lipid analyses | Biofuel | Emulsion
H-Index Metrics
-
H-Index60
-
i10 Index140
-
Citation Counts12,707
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* Total H Index Rankings
Rankings
57,147
World Rank
170
Country Rank
6
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
59,264
World Rank
182
Country Rank
21
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
61,941
World Rank
191
Country Rank
33
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
65,405
World Rank
209
Country Rank
7
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
68,157
World Rank
218
Country Rank
8
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Ionic liquids | environment | Composite & Biomaterial
Ionic liquids | environment | Composite & Biomaterial
H-Index Metrics
-
H-Index56
-
i10 Index180
-
Citation Counts11,460
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* Total H Index Rankings
Rankings
75,652
World Rank
256
Country Rank
8
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Reaction Engineering | Heterogeneous catalysis | Wastewater treatment | Microbial fuel cell | CO2 reductio
Reaction Engineering | Heterogeneous catalysis | Wastewater treatment | Microbial fuel cell | CO2 reductio
H-Index Metrics
-
H-Index54
-
i10 Index182
-
Citation Counts8,836
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* Total H Index Rankings
Rankings
75,796
World Rank
259
Country Rank
10
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
80,970
World Rank
292
Country Rank
13
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
91,927
World Rank
346
Country Rank
43
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
Materials Chemistry | Environmental Chemistry | Waste to Resource
Materials Chemistry | Environmental Chemistry | Waste to Resource
H-Index Metrics
-
H-Index50
-
i10 Index118
-
Citation Counts11,891
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* Total H Index Rankings
Rankings
93,013
World Rank
357
Country Rank
34
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
Membranes | Cultivation of Algae | Bioprocessing Engineerin
Membranes | Cultivation of Algae | Bioprocessing Engineerin
H-Index Metrics
-
H-Index50
-
i10 Index135
-
Citation Counts9,227
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* Total H Index Rankings
Rankings
97,439
World Rank
389
Country Rank
14
University
Ranking Based On Selection:
24
Engineering & Technology / Chemical Engineering
Chemical Engineering | Membrane | Absorption | Process Modeling and Scale-up | Computational Flui
Chemical Engineering | Membrane | Absorption | Process Modeling and Scale-up | Computational Flui
H-Index Metrics
-
H-Index49
-
i10 Index125
-
Citation Counts6,711
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* Total H Index Rankings
Rankings
103,363
World Rank
415
Country Rank
50
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Magnetic Nanoparticles | Magnetic Separation | Magnetophoresis | Colloid and Interface Scienc
Magnetic Nanoparticles | Magnetic Separation | Magnetophoresis | Colloid and Interface Scienc
H-Index Metrics
-
H-Index48
-
i10 Index89
-
Citation Counts8,467
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Premium Data
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Track your performance in real time — benchmark, compare, and improve. Stay ahead with instant insights and global peer comparisons.
Attract world-class talent across 211 disciplines. Find, connect, and recruit the brightest minds worldwide.
Unlock researcher and institutional impact with transparent contribution scores. Recognize, measure, and reward academic excellence at every level.
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