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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 03, 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 (1.131.752) 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
253
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
2,896
World Rank
128
Country Rank
1
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
3,574
World Rank
57
Country Rank
13
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Chemical Engineering | Aerosols | Combustion | Sensors | Particle Technolog
Chemical Engineering | Aerosols | Combustion | Sensors | Particle Technolog
H-Index Metrics
-
H-Index133
-
i10 Index462
-
Citation Counts54,142
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* Total H Index Rankings
Rankings
6,275
World Rank
127
Country Rank
2
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
7,973
World Rank
63
Country Rank
9
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Enzyme Technology | Industrial Biotechnology | Enzyme Kinetics | Carbohydrate-active Enzyme
Enzyme Technology | Industrial Biotechnology | Enzyme Kinetics | Carbohydrate-active Enzyme
H-Index Metrics
-
H-Index108
-
i10 Index394
-
Citation Counts41,690
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* Total H Index Rankings
Rankings
7,986
World Rank
368
Country Rank
9
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Chemical Engineering | Membrane Science | Membrane Technology | Additive fabrication | Microfluidic
Chemical Engineering | Membrane Science | Membrane Technology | Additive fabrication | Microfluidic
H-Index Metrics
-
H-Index108
-
i10 Index584
-
Citation Counts47,875
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* Total H Index Rankings
Rankings
8,471
World Rank
388
Country Rank
4
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
8,853
World Rank
167
Country Rank
43
University
Ranking Based On Selection:
8
Engineering & Technology / Chemical Engineering
Zeolites | Reducible Oxides | Heterogeneous Catalysis | Synchrotron Radiation | Structure - Performanc
Zeolites | Reducible Oxides | Heterogeneous Catalysis | Synchrotron Radiation | Structure - Performanc
H-Index Metrics
-
H-Index105
-
i10 Index459
-
Citation Counts39,113
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* Total H Index Rankings
Rankings
9,243
World Rank
85
Country Rank
28
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
chemical kinetics | catalysis | chemical engineering | modelin
chemical kinetics | catalysis | chemical engineering | modelin
H-Index Metrics
-
H-Index104
-
i10 Index659
-
Citation Counts44,357
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* Total H Index Rankings
Rankings
10,399
World Rank
499
Country Rank
1
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
water oxidation | photosystem II | hydrogenases | artificial photosynthesis | hydrogenase model
water oxidation | photosystem II | hydrogenases | artificial photosynthesis | hydrogenase model
H-Index Metrics
-
H-Index101
-
i10 Index467
-
Citation Counts39,665
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* Total H Index Rankings
Rankings
10,786
World Rank
213
Country Rank
12
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
micropollutants | Anaerobic treatment | Wastewater treatment | Environmental Engineerin
micropollutants | Anaerobic treatment | Wastewater treatment | Environmental Engineerin
H-Index Metrics
-
H-Index100
-
i10 Index381
-
Citation Counts35,415
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* Total H Index Rankings
Rankings
11,745
World Rank
216
Country Rank
33
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
11,828
World Rank
1,089
Country Rank
104
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
Chemical Engineering | Energy | Electrochemical Devices | X-ray Imaging | Batterie
Chemical Engineering | Energy | Electrochemical Devices | X-ray Imaging | Batterie
H-Index Metrics
-
H-Index97
-
i10 Index437
-
Citation Counts33,267
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* Total H Index Rankings
Rankings
13,303
World Rank
1,203
Country Rank
50
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
13,456
World Rank
103
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Nanosafety | nanotoxicology | occupational health | genetic epidemiolog
Nanosafety | nanotoxicology | occupational health | genetic epidemiolog
H-Index Metrics
-
H-Index94
-
i10 Index387
-
Citation Counts29,817
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* Total H Index Rankings
Rankings
13,484
World Rank
105
Country Rank
15
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
13,508
World Rank
265
Country Rank
4
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
waste-water treatment | environmental engineering | environmental electrochemistry engineerin
waste-water treatment | environmental engineering | environmental electrochemistry engineerin
H-Index Metrics
-
H-Index94
-
i10 Index448
-
Citation Counts30,598
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* Total H Index Rankings
Rankings
15,714
World Rank
308
Country Rank
8
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
15,769
World Rank
310
Country Rank
14
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Life Cycle Assessment | Circular Economy | Carbon Footprint | Ecodesign | Biochemical Reactor
Life Cycle Assessment | Circular Economy | Carbon Footprint | Ecodesign | Biochemical Reactor
H-Index Metrics
-
H-Index90
-
i10 Index345
-
Citation Counts25,723
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* Total H Index Rankings
Rankings
15,851
World Rank
1,433
Country Rank
99
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
16,416
World Rank
1,483
Country Rank
25
University
Ranking Based On Selection:
21
Engineering & Technology / Chemical Engineering
Electrochemical Technologies | Liquid Salts | Energy Materials | Supercapattery & Supercapacito
Electrochemical Technologies | Liquid Salts | Energy Materials | Supercapattery & Supercapacito
H-Index Metrics
-
H-Index89
-
i10 Index274
-
Citation Counts29,101
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* Total H Index Rankings
Rankings
16,824
World Rank
331
Country Rank
5
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
Electrochemistry | Material science | Energy | Surfac
Electrochemistry | Material science | Energy | Surfac
H-Index Metrics
-
H-Index88
-
i10 Index182
-
Citation Counts61,450
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* Total H Index Rankings
Rankings
17,167
World Rank
327
Country Rank
46
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
photocatalysis | self disinfecting materials | water disinfectio
photocatalysis | self disinfecting materials | water disinfectio
H-Index Metrics
-
H-Index88
-
i10 Index276
-
Citation Counts27,890
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* Total H Index Rankings
Rankings
17,777
World Rank
1,609
Country Rank
113
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
18,432
World Rank
84
Country Rank
2
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
advanced oxidation processes (AOPs) | applied catalysis | environmental engineering | water/wastewater treatmen
advanced oxidation processes (AOPs) | applied catalysis | environmental engineering | water/wastewater treatmen
H-Index Metrics
-
H-Index86
-
i10 Index274
-
Citation Counts26,502
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Premium Data
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