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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 05, 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
79,535
World Rank
46
Country Rank
2
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
82,989
World Rank
49
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Drying | Adsorption | Extraction | Essential Oils | Biofuel
Drying | Adsorption | Extraction | Essential Oils | Biofuel
H-Index Metrics
-
H-Index52
-
i10 Index140
-
Citation Counts8,324
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* Total H Index Rankings
Rankings
125,170
World Rank
141
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Chemical Engineering | Bioprocess | Food Engineering | Microalgae
Chemical Engineering | Bioprocess | Food Engineering | Microalgae
H-Index Metrics
-
H-Index44
-
i10 Index193
-
Citation Counts7,847
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* Total H Index Rankings
Rankings
174,141
World Rank
286
Country Rank
10
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Virtual Material and Artificial Intelligence | Sustainability | Ionic Liquid
Virtual Material and Artificial Intelligence | Sustainability | Ionic Liquid
H-Index Metrics
-
H-Index38
-
i10 Index71
-
Citation Counts4,236
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* Total H Index Rankings
Rankings
185,067
World Rank
341
Country Rank
4
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Supercritical Fluids Technology | Extraction | Micronization | Material Synthesi
Supercritical Fluids Technology | Extraction | Micronization | Material Synthesi
H-Index Metrics
-
H-Index37
-
i10 Index105
-
Citation Counts5,235
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* Total H Index Rankings
Rankings
201,764
World Rank
406
Country Rank
1
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
216,707
World Rank
506
Country Rank
7
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Food Engineering | Chemical Reaction Engineering | Membrane Development for WWT | Separation Processe
Food Engineering | Chemical Reaction Engineering | Membrane Development for WWT | Separation Processe
H-Index Metrics
-
H-Index34
-
i10 Index101
-
Citation Counts3,974
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* Total H Index Rankings
Rankings
229,884
World Rank
573
Country Rank
8
University
Ranking Based On Selection:
8
Engineering & Technology / Chemical Engineering
Chemical Reaction Engineering | Biofuel | Essential oil | sonochemistry | microwave chemistr
Chemical Reaction Engineering | Biofuel | Essential oil | sonochemistry | microwave chemistr
H-Index Metrics
-
H-Index33
-
i10 Index116
-
Citation Counts4,140
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* Total H Index Rankings
Rankings
230,690
World Rank
583
Country Rank
22
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Process system engineering | Microalgae biorefinery | Energy & exergy analysis | Biodiesel | Biomass to energ
Process system engineering | Microalgae biorefinery | Energy & exergy analysis | Biodiesel | Biomass to energ
H-Index Metrics
-
H-Index33
-
i10 Index120
-
Citation Counts4,576
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* Total H Index Rankings
Rankings
260,565
World Rank
773
Country Rank
12
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
Biotechnology | Chemical Engineering | Bio Energy | Food Engineering | Food Technolog
Biotechnology | Chemical Engineering | Bio Energy | Food Engineering | Food Technolog
H-Index Metrics
-
H-Index31
-
i10 Index71
-
Citation Counts2,832
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* Total H Index Rankings
Rankings
271,255
World Rank
813
Country Rank
12
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Membrane Technology | Inorganic Membranes | organa-silica membranes | Wetland saline water | Coal Bed Methan
Membrane Technology | Inorganic Membranes | organa-silica membranes | Wetland saline water | Coal Bed Methan
H-Index Metrics
-
H-Index30
-
i10 Index78
-
Citation Counts3,415
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* Total H Index Rankings
Rankings
272,877
World Rank
844
Country Rank
18
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
287,607
World Rank
923
Country Rank
1
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
287,724
World Rank
934
Country Rank
12
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
292,483
World Rank
1,018
Country Rank
16
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
chemical engineering | aerosol technology | particles technolog
chemical engineering | aerosol technology | particles technolog
H-Index Metrics
-
H-Index29
-
i10 Index73
-
Citation Counts3,233
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* Total H Index Rankings
Rankings
293,284
World Rank
1,029
Country Rank
4
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Chemical Engineering | Environment | Nanomaterials | Biomass Valorizatio
Chemical Engineering | Environment | Nanomaterials | Biomass Valorizatio
H-Index Metrics
-
H-Index29
-
i10 Index47
-
Citation Counts2,978
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* Total H Index Rankings
Rankings
307,981
World Rank
1,152
Country Rank
14
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
Water and Waste Water Treatment | Membrane Technolog
Water and Waste Water Treatment | Membrane Technolog
H-Index Metrics
-
H-Index28
-
i10 Index62
-
Citation Counts2,093
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* Total H Index Rankings
Rankings
309,268
World Rank
1,163
Country Rank
57
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Chemical Engineering | Bioprocess Engineering | Environmental Engineerin
Chemical Engineering | Bioprocess Engineering | Environmental Engineerin
H-Index Metrics
-
H-Index28
-
i10 Index87
-
Citation Counts3,034
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* Total H Index Rankings
Rankings
312,864
World Rank
1,189
Country Rank
58
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Reaction engineering | Catalysis | Chemical and Natural New Product Design | Natural resources utilizatio
Reaction engineering | Catalysis | Chemical and Natural New Product Design | Natural resources utilizatio
H-Index Metrics
-
H-Index28
-
i10 Index59
-
Citation Counts2,642
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* Total H Index Rankings
Rankings
323,856
World Rank
1,225
Country Rank
1
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Biorefinery | Bioprocess | Catalysis | Marine Natural Produc
Biorefinery | Bioprocess | Catalysis | Marine Natural Produc
H-Index Metrics
-
H-Index27
-
i10 Index53
-
Citation Counts2,220
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* Total H Index Rankings
Rankings
329,038
World Rank
1,341
Country Rank
37
University
Ranking Based On Selection:
21
Engineering & Technology / Chemical Engineering
Emulsion | membrane | membrane emulsification | surfactant
Emulsion | membrane | membrane emulsification | surfactant
H-Index Metrics
-
H-Index27
-
i10 Index73
-
Citation Counts2,678
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* Total H Index Rankings
Rankings
331,001
World Rank
1,364
Country Rank
40
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
346,413
World Rank
1,484
Country Rank
64
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
Metallurgy | Circular Economy | Mineral Processing | Hydrometallurgy | Hydro-electrometallurg
Metallurgy | Circular Economy | Mineral Processing | Hydrometallurgy | Hydro-electrometallurg
H-Index Metrics
-
H-Index26
-
i10 Index78
-
Citation Counts2,569
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* Total H Index Rankings
Rankings
346,428
World Rank
1,487
Country Rank
42
University
Ranking Based On Selection:
24
Engineering & Technology / Chemical Engineering
bioenergy and biofuel | energy conservation | food fermentation | material technology | catalyst and catalysi
bioenergy and biofuel | energy conservation | food fermentation | material technology | catalyst and catalysi
H-Index Metrics
-
H-Index26
-
i10 Index74
-
Citation Counts2,658
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Premium Data
* Total H Index Rankings
Rankings
350,252
World Rank
1,568
Country Rank
49
University
Ranking Based On Selection:
25
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