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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 02, 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
71,366
World Rank
79
Country Rank
4
University
Ranking Based On Selection:
1
Engineering & Technology / Energy Engineering
Energy and environment management | Renewable Energy | Solar Energy | Waste Managemen
Energy and environment management | Renewable Energy | Solar Energy | Waste Managemen
H-Index Metrics
-
H-Index55
-
i10 Index150
-
Citation Counts10,741
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* Total H Index Rankings
Rankings
92,339
World Rank
113
Country Rank
3
University
Ranking Based On Selection:
2
Engineering & Technology / Energy Engineering
Nanotech | Supercapacitors | Batteries | Electrocatalysis | Graphen
Nanotech | Supercapacitors | Batteries | Electrocatalysis | Graphen
H-Index Metrics
-
H-Index50
-
i10 Index155
-
Citation Counts8,159
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* Total H Index Rankings
Rankings
112,673
World Rank
148
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Energy Engineering
Algae Biofuels | Energy Engineering | Food Microbiology | Bioprocess Technology | Biotechnolog
Algae Biofuels | Energy Engineering | Food Microbiology | Bioprocess Technology | Biotechnolog
H-Index Metrics
-
H-Index46
-
i10 Index145
-
Citation Counts6,697
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* Total H Index Rankings
Rankings
113,635
World Rank
150
Country Rank
10
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
Energy Engineering | Biomass Conversion | Aerosol Technolog
Energy Engineering | Biomass Conversion | Aerosol Technolog
H-Index Metrics
-
H-Index46
-
i10 Index180
-
Citation Counts7,405
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* Total H Index Rankings
Rankings
135,515
World Rank
192
Country Rank
41
University
Ranking Based On Selection:
5
Engineering & Technology / Energy Engineering
fuel cell | hydrogen | renewable energy | energy storag
fuel cell | hydrogen | renewable energy | energy storag
H-Index Metrics
-
H-Index43
-
i10 Index120
-
Citation Counts5,371
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* Total H Index Rankings
Rankings
151,322
World Rank
223
Country Rank
21
University
Ranking Based On Selection:
6
Engineering & Technology / Energy Engineering
Energy Engineering | Mechanical Engineering | Thermal Engineerin
Energy Engineering | Mechanical Engineering | Thermal Engineerin
H-Index Metrics
-
H-Index41
-
i10 Index111
-
Citation Counts4,673
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* Total H Index Rankings
Rankings
228,485
World Rank
396
Country Rank
7
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
243,730
World Rank
444
Country Rank
24
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
253,471
World Rank
472
Country Rank
56
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
263,582
World Rank
490
Country Rank
16
University
Ranking Based On Selection:
10
Engineering & Technology / Energy Engineering
Renewable Energy | Bioenergy | Energy Efficiency | Climate Change Mitigatio
Renewable Energy | Bioenergy | Energy Efficiency | Climate Change Mitigatio
H-Index Metrics
-
H-Index31
-
i10 Index42
-
Citation Counts4,366
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* Total H Index Rankings
Rankings
373,989
World Rank
796
Country Rank
2
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
397,280
World Rank
881
Country Rank
25
University
Ranking Based On Selection:
12
Engineering & Technology / Energy Engineering
Smartgrid & Microgrid | AI & ML Applications in Renewable Energy Forecasting | Electric Vehicle
Smartgrid & Microgrid | AI & ML Applications in Renewable Energy Forecasting | Electric Vehicle
H-Index Metrics
-
H-Index24
-
i10 Index56
-
Citation Counts2,152
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* Total H Index Rankings
Rankings
432,864
World Rank
993
Country Rank
29
University
Ranking Based On Selection:
13
Engineering & Technology / Energy Engineering
Renewable Energy | Photovoltaic System | Smart Grid Tecnolog
Renewable Energy | Photovoltaic System | Smart Grid Tecnolog
H-Index Metrics
-
H-Index23
-
i10 Index35
-
Citation Counts1,874
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* Total H Index Rankings
Rankings
550,094
World Rank
1,435
Country Rank
49
University
Ranking Based On Selection:
14
Engineering & Technology / Energy Engineering
Power Systems | Power Electronics | Induction Heating | Wireless Power Transfe
Power Systems | Power Electronics | Induction Heating | Wireless Power Transfe
H-Index Metrics
-
H-Index19
-
i10 Index49
-
Citation Counts1,702
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* Total H Index Rankings
Rankings
594,095
World Rank
1,591
Country Rank
99
University
Ranking Based On Selection:
15
Engineering & Technology / Energy Engineering
Ruminant Nutrition | Energy requirement | Enteric Methane | Rumen fermentation | Sustainable syste
Ruminant Nutrition | Energy requirement | Enteric Methane | Rumen fermentation | Sustainable syste
H-Index Metrics
-
H-Index18
-
i10 Index28
-
Citation Counts1,363
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* Total H Index Rankings
Rankings
594,711
World Rank
1,593
Country Rank
1
University
Ranking Based On Selection:
16
Engineering & Technology / Energy Engineering
Renewable Energy | Thermoelectric Materials | Materials Scienc
Renewable Energy | Thermoelectric Materials | Materials Scienc
H-Index Metrics
-
H-Index18
-
i10 Index26
-
Citation Counts1,126
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* Total H Index Rankings
Rankings
655,074
World Rank
1,807
Country Rank
147
University
Ranking Based On Selection:
17
Engineering & Technology / Energy Engineering
Energy technology | Climate Action | Energy and GHG Policy and Planning | Energy and GHG Data Analysi
Energy technology | Climate Action | Energy and GHG Policy and Planning | Energy and GHG Data Analysi
H-Index Metrics
-
H-Index16
-
i10 Index24
-
Citation Counts831
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* Total H Index Rankings
Rankings
666,371
World Rank
1,864
Country Rank
62
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
688,252
World Rank
1,947
Country Rank
16
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
696,023
World Rank
1,976
Country Rank
43
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
734,679
World Rank
2,136
Country Rank
128
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
829,087
World Rank
2,540
Country Rank
2
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
847,884
World Rank
2,623
Country Rank
136
University
Ranking Based On Selection:
23
Engineering & Technology / Energy Engineering
Power System Reliability | Power System Planning | Power System Operation | Asset Managemen
Power System Reliability | Power System Planning | Power System Operation | Asset Managemen
H-Index Metrics
-
H-Index13
-
i10 Index17
-
Citation Counts1,281
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* Total H Index Rankings
Rankings
866,438
World Rank
2,729
Country Rank
1
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
881,207
World Rank
2,824
Country Rank
38
University
Ranking Based On Selection:
25
Engineering & Technology / Energy Engineering
Renewable Energy | Biomass and Bioenergy | Catalysis | Kinetic Study | Reactor desig
Renewable Energy | Biomass and Bioenergy | Catalysis | Kinetic Study | Reactor desig
H-Index Metrics
-
H-Index12
-
i10 Index13
-
Citation Counts474
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Premium Data
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