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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
28,868
World Rank
236
Country Rank
14
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
66,048
World Rank
824
Country Rank
39
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Energy | Climate Change | Thermodynamics | Petroleum | Fuel
Energy | Climate Change | Thermodynamics | Petroleum | Fuel
H-Index Metrics
-
H-Index57
-
i10 Index166
-
Citation Counts10,868
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* Total H Index Rankings
Rankings
73,690
World Rank
181
Country Rank
3
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
76,564
World Rank
1,032
Country Rank
83
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
perovskite solar cells | photocatalysis | quantum dots | polymer electrolyte | organic and dye sensitised solar cell
perovskite solar cells | photocatalysis | quantum dots | polymer electrolyte | organic and dye sensitised solar cell
H-Index Metrics
-
H-Index54
-
i10 Index154
-
Citation Counts13,219
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* Total H Index Rankings
Rankings
121,723
World Rank
2,195
Country Rank
78
University
Ranking Based On Selection:
5
* Total H Index Rankings
Rankings
138,418
World Rank
514
Country Rank
180
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
Energy | Environmental catalysis | Chemical Engineering | and Waste conversio
Energy | Environmental catalysis | Chemical Engineering | and Waste conversio
H-Index Metrics
-
H-Index42
-
i10 Index79
-
Citation Counts5,120
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* Total H Index Rankings
Rankings
143,554
World Rank
550
Country Rank
188
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
145,297
World Rank
2,966
Country Rank
102
University
Ranking Based On Selection:
8
Engineering & Technology / Energy Engineering
Energia | Mudanças Climáticas | Teoria do Conhecimento
Energia | Mudanças Climáticas | Teoria do Conhecimento
H-Index Metrics
-
H-Index42
-
i10 Index106
-
Citation Counts5,429
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* Total H Index Rankings
Rankings
152,480
World Rank
610
Country Rank
205
University
Ranking Based On Selection:
9
Engineering & Technology / Energy Engineering
solar air condicioning | heat transformers | absorption cooling systems | wind energ
solar air condicioning | heat transformers | absorption cooling systems | wind energ
H-Index Metrics
-
H-Index41
-
i10 Index90
-
Citation Counts5,848
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* Total H Index Rankings
Rankings
158,454
World Rank
184
Country Rank
38
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
161,098
World Rank
664
Country Rank
46
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
161,253
World Rank
668
Country Rank
5
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Sustainable use of water and energy - Process integration - Renewable energy and biorefinerie
Sustainable use of water and energy - Process integration - Renewable energy and biorefinerie
H-Index Metrics
-
H-Index40
-
i10 Index78
-
Citation Counts4,509
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* Total H Index Rankings
Rankings
180,161
World Rank
801
Country Rank
61
University
Ranking Based On Selection:
13
Engineering & Technology / Energy Engineering
Solar Cells | Semiconductor Physics | Photovoltaic System
Solar Cells | Semiconductor Physics | Photovoltaic System
H-Index Metrics
-
H-Index38
-
i10 Index87
-
Citation Counts4,525
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* Total H Index Rankings
Rankings
180,871
World Rank
4,164
Country Rank
55
University
Ranking Based On Selection:
14
Engineering & Technology / Energy Engineering
energia solar | sensores | nanotubos de carbono | grafeno | polímero
energia solar | sensores | nanotubos de carbono | grafeno | polímero
H-Index Metrics
-
H-Index38
-
i10 Index108
-
Citation Counts7,276
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* Total H Index Rankings
Rankings
204,107
World Rank
463
Country Rank
50
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Solar Energy | Thermal Storage | Applied Thermodynamics | Refrigeratio
Solar Energy | Thermal Storage | Applied Thermodynamics | Refrigeratio
H-Index Metrics
-
H-Index35
-
i10 Index74
-
Citation Counts3,582
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* Total H Index Rankings
Rankings
205,272
World Rank
1,005
Country Rank
14
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
Energy and environmental Systems | Artificial Intelligence | Optimization | RIBIERSE-CYTED | RIPEBA-CYT
Energy and environmental Systems | Artificial Intelligence | Optimization | RIBIERSE-CYTED | RIPEBA-CYT
H-Index Metrics
-
H-Index35
-
i10 Index81
-
Citation Counts3,530
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* Total H Index Rankings
Rankings
216,187
World Rank
5,342
Country Rank
197
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Energy System | Integrated Assessment Model | Climate Chang
Energy System | Integrated Assessment Model | Climate Chang
H-Index Metrics
-
H-Index34
-
i10 Index57
-
Citation Counts4,305
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* Total H Index Rankings
Rankings
219,000
World Rank
291
Country Rank
33
University
Ranking Based On Selection:
18
Engineering & Technology / Energy Engineering
Energy | Internal combustion engines | biofuels | pollutant emissions | modellin
Energy | Internal combustion engines | biofuels | pollutant emissions | modellin
H-Index Metrics
-
H-Index34
-
i10 Index77
-
Citation Counts5,485
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* Total H Index Rankings
Rankings
224,125
World Rank
588
Country Rank
4
University
Ranking Based On Selection:
19
Engineering & Technology / Energy Engineering
energy | hydrogen | carbon dioxide | material science | catalysi
energy | hydrogen | carbon dioxide | material science | catalysi
H-Index Metrics
-
H-Index34
-
i10 Index89
-
Citation Counts3,983
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Premium Data
* Total H Index Rankings
Rankings
234,621
World Rank
1,222
Country Rank
385
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
237,681
World Rank
1,261
Country Rank
398
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
239,584
World Rank
1,292
Country Rank
408
University
Ranking Based On Selection:
22
Engineering & Technology / Energy Engineering
solar energy | spray pyrolysis | solar photovoltaic | Reliablit
solar energy | spray pyrolysis | solar photovoltaic | Reliablit
H-Index Metrics
-
H-Index33
-
i10 Index60
-
Citation Counts4,438
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* Total H Index Rankings
Rankings
246,543
World Rank
601
Country Rank
19
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Energy Conversion | Combustion | Fire | Engineering | Microgravit
Energy Conversion | Combustion | Fire | Engineering | Microgravit
H-Index Metrics
-
H-Index32
-
i10 Index77
-
Citation Counts3,199
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* Total H Index Rankings
Rankings
250,826
World Rank
1,367
Country Rank
426
University
Ranking Based On Selection:
24
Engineering & Technology / Energy Engineering
Solar Energy | Concentrated Solar Power | Radiative Transfer | Solar Chemistry | Solar Desalinatio
Solar Energy | Concentrated Solar Power | Radiative Transfer | Solar Chemistry | Solar Desalinatio
H-Index Metrics
-
H-Index32
-
i10 Index62
-
Citation Counts3,071
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Premium Data
* Total H Index Rankings
Rankings
252,305
World Rank
1,400
Country Rank
437
University
Ranking Based On Selection:
25
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