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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 06, 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 (0) 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
686
World Rank
10
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Electrocatalysis | photocatalysis | energy conversion and storage | RNA deliver
Electrocatalysis | photocatalysis | energy conversion and storage | RNA deliver
H-Index Metrics
-
H-Index204
-
i10 Index553
-
Citation Counts157,076
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* Total H Index Rankings
Rankings
921
World Rank
20
Country Rank
3
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Catalysis | Adsorption | Photocatalysis | Nanomaterials | Chemical Engineerin
Catalysis | Adsorption | Photocatalysis | Nanomaterials | Chemical Engineerin
H-Index Metrics
-
H-Index187
-
i10 Index775
-
Citation Counts119,760
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* Total H Index Rankings
Rankings
3,847
World Rank
133
Country Rank
12
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
photocatalysis | aggregation | catalysis | energy conversion | nanomaterial
photocatalysis | aggregation | catalysis | energy conversion | nanomaterial
H-Index Metrics
-
H-Index130
-
i10 Index526
-
Citation Counts58,125
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* Total H Index Rankings
Rankings
5,231
World Rank
182
Country Rank
3
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Chemical engineering | catalysis | materials chemistry | energy | environmenta
Chemical engineering | catalysis | materials chemistry | energy | environmenta
H-Index Metrics
-
H-Index120
-
i10 Index320
-
Citation Counts47,198
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* Total H Index Rankings
Rankings
5,617
World Rank
202
Country Rank
16
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Polymer science | Macromolecular engineering | NanoMedicine | Energ
Polymer science | Macromolecular engineering | NanoMedicine | Energ
H-Index Metrics
-
H-Index118
-
i10 Index396
-
Citation Counts45,086
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* Total H Index Rankings
Rankings
6,427
World Rank
238
Country Rank
26
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Separation membrane | water desalination and purification | ion transport and separation | chira
Separation membrane | water desalination and purification | ion transport and separation | chira
H-Index Metrics
-
H-Index114
-
i10 Index462
-
Citation Counts47,437
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* Total H Index Rankings
Rankings
8,775
World Rank
348
Country Rank
3
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Food engineering | food materials science | food packaging | nutrition | chemical engineerin
Food engineering | food materials science | food packaging | nutrition | chemical engineerin
H-Index Metrics
-
H-Index105
-
i10 Index406
-
Citation Counts34,362
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* Total H Index Rankings
Rankings
10,990
World Rank
443
Country Rank
38
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
12,482
World Rank
25
Country Rank
2
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Biochemical Engineering | Bioprocess Engineering | Algal Biotechnology | Fermentation Technolog
Biochemical Engineering | Bioprocess Engineering | Algal Biotechnology | Fermentation Technolog
H-Index Metrics
-
H-Index96
-
i10 Index312
-
Citation Counts61,058
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* Total H Index Rankings
Rankings
13,345
World Rank
571
Country Rank
6
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
Industrial Chemistry | Chemical Engineering | Materials Science | Bio-inorganic and Medicinal Chemistr
Industrial Chemistry | Chemical Engineering | Materials Science | Bio-inorganic and Medicinal Chemistr
H-Index Metrics
-
H-Index94
-
i10 Index523
-
Citation Counts31,642
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* Total H Index Rankings
Rankings
14,267
World Rank
616
Country Rank
69
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Membrane technology | Functional materials | Electrochemistr
Membrane technology | Functional materials | Electrochemistr
H-Index Metrics
-
H-Index92
-
i10 Index231
-
Citation Counts27,057
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* Total H Index Rankings
Rankings
15,655
World Rank
693
Country Rank
64
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
membrane science and technology | nanocomposites | surface functionalization | gas separation | wate
membrane science and technology | nanocomposites | surface functionalization | gas separation | wate
H-Index Metrics
-
H-Index90
-
i10 Index202
-
Citation Counts26,728
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* Total H Index Rankings
Rankings
16,984
World Rank
763
Country Rank
8
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
Heterogeneous Catalysis | Green Chemistry | Renewable Feedstocks | Biofuel
Heterogeneous Catalysis | Green Chemistry | Renewable Feedstocks | Biofuel
H-Index Metrics
-
H-Index88
-
i10 Index284
-
Citation Counts27,786
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* Total H Index Rankings
Rankings
17,531
World Rank
804
Country Rank
79
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
carbon material | electrocatalyst | energy storage | membrane | antibacteria
carbon material | electrocatalyst | energy storage | membrane | antibacteria
H-Index Metrics
-
H-Index87
-
i10 Index256
-
Citation Counts30,778
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* Total H Index Rankings
Rankings
22,432
World Rank
1,060
Country Rank
70
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Electrochemical Energy Technologies | Carbon Materials | 2D Material
Electrochemical Energy Technologies | Carbon Materials | 2D Material
H-Index Metrics
-
H-Index81
-
i10 Index217
-
Citation Counts37,356
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* Total H Index Rankings
Rankings
23,241
World Rank
1,104
Country Rank
55
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Molecular Modelling | Computational Electrochemistry | Energy Material
Molecular Modelling | Computational Electrochemistry | Energy Material
H-Index Metrics
-
H-Index80
-
i10 Index132
-
Citation Counts46,598
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* Total H Index Rankings
Rankings
23,380
World Rank
1,113
Country Rank
29
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
25,506
World Rank
1,233
Country Rank
122
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
26,637
World Rank
1,302
Country Rank
63
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Water and wastewater treatment | Resource recovery and energy production | Functional materials | Desalination | Bioelectrochemica
Water and wastewater treatment | Resource recovery and energy production | Functional materials | Desalination | Bioelectrochemica
H-Index Metrics
-
H-Index77
-
i10 Index308
-
Citation Counts28,717
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* Total H Index Rankings
Rankings
27,534
World Rank
1,333
Country Rank
130
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
wearable biosensors | bioelectronics | self-assembly of nanocrystals | plasmene nanosheets | DN
wearable biosensors | bioelectronics | self-assembly of nanocrystals | plasmene nanosheets | DN
H-Index Metrics
-
H-Index76
-
i10 Index199
-
Citation Counts22,418
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* Total H Index Rankings
Rankings
31,072
World Rank
1,502
Country Rank
32
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
44,634
World Rank
2,196
Country Rank
196
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
MOFs | Membrane Engineering | Mechanochemistry | Glass Composit
MOFs | Membrane Engineering | Mechanochemistry | Glass Composit
H-Index Metrics
-
H-Index65
-
i10 Index129
-
Citation Counts13,523
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* Total H Index Rankings
Rankings
45,870
World Rank
2,275
Country Rank
54
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
energy and fuels | biochar | bio-oil and biorefinery | thermochemical processing | pollutant
energy and fuels | biochar | bio-oil and biorefinery | thermochemical processing | pollutant
H-Index Metrics
-
H-Index65
-
i10 Index199
-
Citation Counts14,678
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* Total H Index Rankings
Rankings
48,401
World Rank
2,376
Country Rank
216
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
51,320
World Rank
2,520
Country Rank
210
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Food Structure_ Enzyme Kinetics | Plant Proteins | Phytochemcial | Functional Foods-Non-thermal processing of Foods_ Food wast
Food Structure_ Enzyme Kinetics | Plant Proteins | Phytochemcial | Functional Foods-Non-thermal processing of Foods_ Food wast
H-Index Metrics
-
H-Index62
-
i10 Index119
-
Citation Counts10,757
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Premium Data
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