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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
67,948
World Rank
25
Country Rank
6
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Adsorption | Environmental science | Chemical engineering | Material scienc
Adsorption | Environmental science | Chemical engineering | Material scienc
H-Index Metrics
-
H-Index56
-
i10 Index101
-
Citation Counts13,717
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* Total H Index Rankings
Rankings
131,680
World Rank
69
Country Rank
10
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
168,138
World Rank
103
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Catalysis | Green chemistry | Metal-organic framework
Catalysis | Green chemistry | Metal-organic framework
H-Index Metrics
-
H-Index39
-
i10 Index96
-
Citation Counts8,074
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* Total H Index Rankings
Rankings
194,024
World Rank
131
Country Rank
4
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Materials | Chemical/Biosensors - Analytical Chemistry-Inorganic Chemistry-Nanomaterial
Materials | Chemical/Biosensors - Analytical Chemistry-Inorganic Chemistry-Nanomaterial
H-Index Metrics
-
H-Index36
-
i10 Index74
-
Citation Counts4,589
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* Total H Index Rankings
Rankings
241,298
World Rank
190
Country Rank
3
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Graphene and Graphene-based composites | Membrane Technology | Renewable Technology of Energy | Natural Product
Graphene and Graphene-based composites | Membrane Technology | Renewable Technology of Energy | Natural Product
H-Index Metrics
-
H-Index32
-
i10 Index126
-
Citation Counts3,635
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* Total H Index Rankings
Rankings
246,029
World Rank
195
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Membrane technology | physicochemical process | Synthesizing adsorption material and membrane | Solid waste treatment | Air polluti
Membrane technology | physicochemical process | Synthesizing adsorption material and membrane | Solid waste treatment | Air polluti
H-Index Metrics
-
H-Index32
-
i10 Index54
-
Citation Counts3,715
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* Total H Index Rankings
Rankings
420,952
World Rank
450
Country Rank
15
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
425,215
World Rank
457
Country Rank
23
University
Ranking Based On Selection:
8
Engineering & Technology / Chemical Engineering
Nano material fabrication and applications | Microfluidic devices fabrication for chemical | optical and electrochemical applicat
Nano material fabrication and applications | Microfluidic devices fabrication for chemical | optical and electrochemical applicat
H-Index Metrics
-
H-Index23
-
i10 Index34
-
Citation Counts1,270
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* Total H Index Rankings
Rankings
442,809
World Rank
488
Country Rank
1
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Catalysis | Chemical Engineering | Functional material
Catalysis | Chemical Engineering | Functional material
H-Index Metrics
-
H-Index22
-
i10 Index42
-
Citation Counts1,906
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* Total H Index Rankings
Rankings
451,100
World Rank
515
Country Rank
14
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
membrane technology | food | bioactive compounds | green technologies | biodegradable film
membrane technology | food | bioactive compounds | green technologies | biodegradable film
H-Index Metrics
-
H-Index22
-
i10 Index28
-
Citation Counts2,661
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* Total H Index Rankings
Rankings
509,796
World Rank
635
Country Rank
2
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Membrane technology | Solid waste | Wasterwater resus
Membrane technology | Solid waste | Wasterwater resus
H-Index Metrics
-
H-Index20
-
i10 Index25
-
Citation Counts1,365
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* Total H Index Rankings
Rankings
511,606
World Rank
644
Country Rank
19
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
Nanomaterials | adsorption | catalysis | green chemistry | construction material
Nanomaterials | adsorption | catalysis | green chemistry | construction material
H-Index Metrics
-
H-Index20
-
i10 Index35
-
Citation Counts1,084
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* Total H Index Rankings
Rankings
512,141
World Rank
646
Country Rank
37
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
545,213
World Rank
718
Country Rank
25
University
Ranking Based On Selection:
14
* Total H Index Rankings
Rankings
579,346
World Rank
791
Country Rank
43
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
catalysis | zeolite | biomass conversion | green synthesi
catalysis | zeolite | biomass conversion | green synthesi
H-Index Metrics
-
H-Index18
-
i10 Index27
-
Citation Counts882
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* Total H Index Rankings
Rankings
633,325
World Rank
935
Country Rank
84
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Chemical Engineering | Structured Nanomaterials | Batter
Chemical Engineering | Structured Nanomaterials | Batter
H-Index Metrics
-
H-Index17
-
i10 Index20
-
Citation Counts951
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* Total H Index Rankings
Rankings
653,177
World Rank
972
Country Rank
31
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
Chemical engineering | Gas adsorption | MOF-supported catalyst | MOF/polymer granular composit
Chemical engineering | Gas adsorption | MOF-supported catalyst | MOF/polymer granular composit
H-Index Metrics
-
H-Index16
-
i10 Index17
-
Citation Counts838
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* Total H Index Rankings
Rankings
670,826
World Rank
1,044
Country Rank
30
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Biochemical Engineering | Synthetic Biology | Metabolic Engineerin
Biochemical Engineering | Synthetic Biology | Metabolic Engineerin
H-Index Metrics
-
H-Index16
-
i10 Index21
-
Citation Counts716
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* Total H Index Rankings
Rankings
714,133
World Rank
1,171
Country Rank
36
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
740,253
World Rank
1,238
Country Rank
43
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Water Splitting | Hydrogen Production | Bipolar Membran
Water Splitting | Hydrogen Production | Bipolar Membran
H-Index Metrics
-
H-Index14
-
i10 Index22
-
Citation Counts724
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* Total H Index Rankings
Rankings
765,719
World Rank
1,359
Country Rank
47
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
794,368
World Rank
1,428
Country Rank
108
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
chemical engineering | catalysis | catalytic materials | adsorption | petrochemical processe
chemical engineering | catalysis | catalytic materials | adsorption | petrochemical processe
H-Index Metrics
-
H-Index13
-
i10 Index18
-
Citation Counts670
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* Total H Index Rankings
Rankings
809,891
World Rank
1,518
Country Rank
53
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
Food and Bioprocess Engineering | Membrane separation | Dryin
Food and Bioprocess Engineering | Membrane separation | Dryin
H-Index Metrics
-
H-Index13
-
i10 Index17
-
Citation Counts432
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Premium Data
* Total H Index Rankings
Rankings
879,760
World Rank
1,777
Country Rank
11
University
Ranking Based On Selection:
24
Engineering & Technology / Chemical Engineering
Heterogeneous catalysis | Design of Experiment & ANN | Renewable energy | Zeolites | Chemica
Heterogeneous catalysis | Design of Experiment & ANN | Renewable energy | Zeolites | Chemica
H-Index Metrics
-
H-Index12
-
i10 Index13
-
Citation Counts757
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Premium Data
* Total H Index Rankings
Rankings
887,420
World Rank
1,803
Country Rank
50
University
Ranking Based On Selection:
25
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