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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 Dec 30, 2025, 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 (1.131.699) 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
3,641
World Rank
36
Country Rank
7
University
Ranking Based On Selection:
1
Engineering & Technology / Meteorology & Atmospheric Sciences
Atmospheric aerosols | Amazonia | global climate chang
Atmospheric aerosols | Amazonia | global climate chang
H-Index Metrics
-
H-Index132
-
i10 Index483
-
Citation Counts78,297
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* Total H Index Rankings
Rankings
4,422
World Rank
40
Country Rank
6
University
Ranking Based On Selection:
2
Engineering & Technology / Electrical & Electronic Engineering
Data Engineer | Signal Processing | Particle Physics | High Energ
Data Engineer | Signal Processing | Particle Physics | High Energ
H-Index Metrics
-
H-Index125
-
i10 Index269
-
Citation Counts51,729
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* Total H Index Rankings
Rankings
8,004
World Rank
63
Country Rank
1
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
11,044
World Rank
82
Country Rank
2
University
Ranking Based On Selection:
4
Engineering & Technology / Metallurgical & Materials Engineering
Materials Science | Nanotechnology | Polymer Scienc
Materials Science | Nanotechnology | Polymer Scienc
H-Index Metrics
-
H-Index99
-
i10 Index455
-
Citation Counts38,505
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* Total H Index Rankings
Rankings
14,783
World Rank
109
Country Rank
1
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Engenharia Química | Engenharia de Alimentos | Química | Adsorption | Wastewater treatmen
Engenharia Química | Engenharia de Alimentos | Química | Adsorption | Wastewater treatmen
H-Index Metrics
-
H-Index91
-
i10 Index444
-
Citation Counts30,066
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* Total H Index Rankings
Rankings
16,276
World Rank
115
Country Rank
4
University
Ranking Based On Selection:
6
Engineering & Technology / Biomaterials and Tissue Engineering
Oral Health | Epidemiology | Clinical trial
Oral Health | Epidemiology | Clinical trial
H-Index Metrics
-
H-Index89
-
i10 Index351
-
Citation Counts27,206
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* Total H Index Rankings
Rankings
16,995
World Rank
121
Country Rank
12
University
Ranking Based On Selection:
7
Engineering & Technology / Nanoscience and Nanotechnology
Bioactive peptides | Nanotechnology | Biotechnolog
Bioactive peptides | Nanotechnology | Biotechnolog
H-Index Metrics
-
H-Index88
-
i10 Index319
-
Citation Counts23,794
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* Total H Index Rankings
Rankings
18,891
World Rank
133
Country Rank
11
University
Ranking Based On Selection:
8
Engineering & Technology / Food Science and Engineering
Food Microbiology | Food Safety | Predictive Microbiology | Risk Analysis | Probiotic
Food Microbiology | Food Safety | Predictive Microbiology | Risk Analysis | Probiotic
H-Index Metrics
-
H-Index85
-
i10 Index300
-
Citation Counts23,844
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* Total H Index Rankings
Rankings
20,551
World Rank
149
Country Rank
2
University
Ranking Based On Selection:
9
Engineering & Technology / Computer Science
AI / Machine Learning | Data Science | Control / Robotics | Optimization | Forecasting / Identification
AI / Machine Learning | Data Science | Control / Robotics | Optimization | Forecasting / Identification
H-Index Metrics
-
H-Index83
-
i10 Index297
-
Citation Counts27,314
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* Total H Index Rankings
Rankings
21,504
World Rank
156
Country Rank
15
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
21,755
World Rank
161
Country Rank
9
University
Ranking Based On Selection:
11
Engineering & Technology / Marine Sciences and Engineering
Oceanography | microbiology | reefs | omic
Oceanography | microbiology | reefs | omic
H-Index Metrics
-
H-Index82
-
i10 Index267
-
Citation Counts27,336
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* Total H Index Rankings
Rankings
24,252
World Rank
185
Country Rank
12
University
Ranking Based On Selection:
12
Engineering & Technology / Civil Engineering
Concrete | building materials | fiber reinforced concrete | decarbonisation | sustainable constructio
Concrete | building materials | fiber reinforced concrete | decarbonisation | sustainable constructio
H-Index Metrics
-
H-Index79
-
i10 Index275
-
Citation Counts24,446
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* Total H Index Rankings
Rankings
24,267
World Rank
186
Country Rank
9
University
Ranking Based On Selection:
13
Engineering & Technology / Nanoscience and Nanotechnology
nanotecnologia | química ambiental | sistemas de liberação | nanopartículas poliméricas | pesticida
nanotecnologia | química ambiental | sistemas de liberação | nanopartículas poliméricas | pesticida
H-Index Metrics
-
H-Index79
-
i10 Index286
-
Citation Counts30,197
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* Total H Index Rankings
Rankings
25,705
World Rank
200
Country Rank
5
University
Ranking Based On Selection:
14
Engineering & Technology / Metallurgical & Materials Engineering
glass | glass-ceramics | crystallization | nucleation | bioglas
glass | glass-ceramics | crystallization | nucleation | bioglas
H-Index Metrics
-
H-Index78
-
i10 Index342
-
Citation Counts22,369
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* Total H Index Rankings
Rankings
26,372
World Rank
208
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Food Science and Engineering
Food Engineering | Biochemical Engineering | Bioprocess | Microalgae | Biotechnolog
Food Engineering | Biochemical Engineering | Bioprocess | Microalgae | Biotechnolog
H-Index Metrics
-
H-Index77
-
i10 Index370
-
Citation Counts23,962
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* Total H Index Rankings
Rankings
26,445
World Rank
211
Country Rank
58
University
Ranking Based On Selection:
16
Engineering & Technology / Computer Science
Artificial Intelligence | Machine Learning | Data Scienc
Artificial Intelligence | Machine Learning | Data Scienc
H-Index Metrics
-
H-Index77
-
i10 Index320
-
Citation Counts24,775
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* Total H Index Rankings
Rankings
26,774
World Rank
217
Country Rank
18
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
27,459
World Rank
223
Country Rank
11
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
environmental modeling | climate change | Amazon conservation | simulation softwar
environmental modeling | climate change | Amazon conservation | simulation softwar
H-Index Metrics
-
H-Index76
-
i10 Index168
-
Citation Counts29,892
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* Total H Index Rankings
Rankings
28,650
World Rank
234
Country Rank
22
University
Ranking Based On Selection:
19
Engineering & Technology / Food Science and Engineering
Reologia | emulsões | engenharia de alimento
Reologia | emulsões | engenharia de alimento
H-Index Metrics
-
H-Index75
-
i10 Index233
-
Citation Counts15,477
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* Total H Index Rankings
Rankings
28,825
World Rank
236
Country Rank
14
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
30,350
World Rank
253
Country Rank
2
University
Ranking Based On Selection:
21
Engineering & Technology / Metallurgical & Materials Engineering
Materiais poliméricos | caracterização de polimeros | biomateriai
Materiais poliméricos | caracterização de polimeros | biomateriai
H-Index Metrics
-
H-Index74
-
i10 Index237
-
Citation Counts17,496
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* Total H Index Rankings
Rankings
31,320
World Rank
268
Country Rank
25
University
Ranking Based On Selection:
22
Engineering & Technology / Food Science and Engineering
microencapsulação | secagem | processos de concentração por membrana | secagem por spra
microencapsulação | secagem | processos de concentração por membrana | secagem por spra
H-Index Metrics
-
H-Index73
-
i10 Index198
-
Citation Counts19,033
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* Total H Index Rankings
Rankings
31,851
World Rank
279
Country Rank
12
University
Ranking Based On Selection:
23
Engineering & Technology / Mechanical Engineering
vibration | structural dynamics | acoustics | energy_harvesting | wave_propagatio
vibration | structural dynamics | acoustics | energy_harvesting | wave_propagatio
H-Index Metrics
-
H-Index73
-
i10 Index238
-
Citation Counts21,435
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* Total H Index Rankings
Rankings
32,722
World Rank
288
Country Rank
5
University
Ranking Based On Selection:
24
Engineering & Technology / Food Science and Engineering
Food Processing | Bioprocess | Non thermal processin
Food Processing | Bioprocess | Non thermal processin
H-Index Metrics
-
H-Index72
-
i10 Index218
-
Citation Counts15,783
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* Total H Index Rankings
Rankings
32,895
World Rank
289
Country Rank
29
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Processos Industriais de Engenharia Química / Especialidade: Processos Bioquímicos - Operações Industriais e Equipamentos
Processos Industriais de Engenharia Química / Especialidade: Processos Bioquímicos - Operações Industriais e Equipamentos
H-Index Metrics
-
H-Index72
-
i10 Index375
-
Citation Counts23,982
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