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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 01, 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
27,473
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Nanotechnology | Ultrasound | Pharmaceuticals | Water treatment | Extractio
Nanotechnology | Ultrasound | Pharmaceuticals | Water treatment | Extractio
H-Index Metrics
-
H-Index76
-
i10 Index263
-
Citation Counts18,162
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* Total H Index Rankings
Rankings
56,191
World Rank
7
Country Rank
3
University
Ranking Based On Selection:
2
Engineering & Technology / Computer Science
Process Modeling Control and Optimization | Systems Engineering | AI-ML | nanomaterial | Remediatio
Process Modeling Control and Optimization | Systems Engineering | AI-ML | nanomaterial | Remediatio
H-Index Metrics
-
H-Index60
-
i10 Index166
-
Citation Counts10,840
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* Total H Index Rankings
Rankings
79,844
World Rank
9
Country Rank
4
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Environmental Engineering | Water and Wastewater Treatment | Solid Waste Managemen
Environmental Engineering | Water and Wastewater Treatment | Solid Waste Managemen
H-Index Metrics
-
H-Index53
-
i10 Index170
-
Citation Counts15,645
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* Total H Index Rankings
Rankings
102,335
World Rank
11
Country Rank
6
University
Ranking Based On Selection:
4
Engineering & Technology / Energy Engineering
Energy | Functional Materials | Fuel Cells | Biomass | Photocatalys
Energy | Functional Materials | Fuel Cells | Biomass | Photocatalys
H-Index Metrics
-
H-Index48
-
i10 Index140
-
Citation Counts12,525
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* Total H Index Rankings
Rankings
132,317
World Rank
13
Country Rank
8
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Bioanalytical Chemistry | Bio/Nano materials | Biosensors | Diagnostics | Food Chemistr
Bioanalytical Chemistry | Bio/Nano materials | Biosensors | Diagnostics | Food Chemistr
H-Index Metrics
-
H-Index43
-
i10 Index103
-
Citation Counts6,071
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* Total H Index Rankings
Rankings
163,698
World Rank
18
Country Rank
13
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
163,909
World Rank
19
Country Rank
14
University
Ranking Based On Selection:
7
Engineering & Technology / Mechanical Engineering
Vibration | Mechanical and Manufacturing Engineering | Mechatronics | Machine Learnin
Vibration | Mechanical and Manufacturing Engineering | Mechatronics | Machine Learnin
H-Index Metrics
-
H-Index39
-
i10 Index124
-
Citation Counts6,571
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* Total H Index Rankings
Rankings
184,717
World Rank
23
Country Rank
17
University
Ranking Based On Selection:
8
Engineering & Technology / Metallurgical & Materials Engineering
plasmonics | machine learning algorithms | Environmental chemistry | wastewater remediation | Water sensor
plasmonics | machine learning algorithms | Environmental chemistry | wastewater remediation | Water sensor
H-Index Metrics
-
H-Index37
-
i10 Index59
-
Citation Counts3,285
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* Total H Index Rankings
Rankings
185,036
World Rank
24
Country Rank
18
University
Ranking Based On Selection:
9
Engineering & Technology / Computer Science
Speech Processing | Smart Grid | Smart Sensors | Smart Hom
Speech Processing | Smart Grid | Smart Sensors | Smart Hom
H-Index Metrics
-
H-Index37
-
i10 Index83
-
Citation Counts6,711
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* Total H Index Rankings
Rankings
192,245
World Rank
27
Country Rank
21
University
Ranking Based On Selection:
10
Engineering & Technology / Energy Engineering
Biomass Characterisation | Catalytic Pyrolysis of Biomass | Biorefinery | Renewable Energy | Circular Bioeconom
Biomass Characterisation | Catalytic Pyrolysis of Biomass | Biorefinery | Renewable Energy | Circular Bioeconom
H-Index Metrics
-
H-Index36
-
i10 Index58
-
Citation Counts4,181
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* Total H Index Rankings
Rankings
245,802
World Rank
38
Country Rank
31
University
Ranking Based On Selection:
11
Engineering & Technology / Computer Science
Machining | Sustainable Manufacturing | Intelligent Manufacturing | Optimizatio
Machining | Sustainable Manufacturing | Intelligent Manufacturing | Optimizatio
H-Index Metrics
-
H-Index32
-
i10 Index63
-
Citation Counts2,907
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* Total H Index Rankings
Rankings
250,640
World Rank
39
Country Rank
32
University
Ranking Based On Selection:
12
Engineering & Technology / Petroleum Engineering
Petrogenesis of Ophiolites | Chromites and PGE | Soil Geochemistry | Synthesis of Abiotic Methan
Petrogenesis of Ophiolites | Chromites and PGE | Soil Geochemistry | Synthesis of Abiotic Methan
H-Index Metrics
-
H-Index32
-
i10 Index78
-
Citation Counts2,834
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* Total H Index Rankings
Rankings
279,403
World Rank
42
Country Rank
6
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
304,577
World Rank
45
Country Rank
37
University
Ranking Based On Selection:
14
Engineering & Technology / Metallurgical & Materials Engineering
Hetereogeneous catalysis | Nanotechnology | Green Energ
Hetereogeneous catalysis | Nanotechnology | Green Energ
H-Index Metrics
-
H-Index28
-
i10 Index53
-
Citation Counts2,726
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* Total H Index Rankings
Rankings
312,381
World Rank
48
Country Rank
7
University
Ranking Based On Selection:
15
Engineering & Technology / Industrial & Manufacturing Engineering
Manufacturing | Micromachining | Engineering Design | Engineering Management | Project Managemen
Manufacturing | Micromachining | Engineering Design | Engineering Management | Project Managemen
H-Index Metrics
-
H-Index28
-
i10 Index72
-
Citation Counts2,816
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* Total H Index Rankings
Rankings
330,117
World Rank
51
Country Rank
42
University
Ranking Based On Selection:
16
Engineering & Technology / Computer Science
Artificial Intelligence | Neural Network | Embedded Systems | Smart Sensor
Artificial Intelligence | Neural Network | Embedded Systems | Smart Sensor
H-Index Metrics
-
H-Index27
-
i10 Index39
-
Citation Counts2,442
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* Total H Index Rankings
Rankings
335,483
World Rank
52
Country Rank
8
University
Ranking Based On Selection:
17
Engineering & Technology / Computer Science
Computational Intelligence | Metaheuristics | Optimization | Machine Learnin
Computational Intelligence | Metaheuristics | Optimization | Machine Learnin
H-Index Metrics
-
H-Index27
-
i10 Index40
-
Citation Counts6,844
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* Total H Index Rankings
Rankings
339,658
World Rank
53
Country Rank
9
University
Ranking Based On Selection:
18
Engineering & Technology / Mechanical Engineering
Thermodynamics | Heat Transfer | Fluid Mechanics | Computational Fluid Dynamics | Refrigeration and Air Conditionin
Thermodynamics | Heat Transfer | Fluid Mechanics | Computational Fluid Dynamics | Refrigeration and Air Conditionin
H-Index Metrics
-
H-Index27
-
i10 Index45
-
Citation Counts2,494
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* Total H Index Rankings
Rankings
350,012
World Rank
58
Country Rank
10
University
Ranking Based On Selection:
19
Engineering & Technology / Petroleum Engineering
Polymer composites and nano-composites | flame retardant polymers | Enhanced Oil Recovery (EOR
Polymer composites and nano-composites | flame retardant polymers | Enhanced Oil Recovery (EOR
H-Index Metrics
-
H-Index26
-
i10 Index65
-
Citation Counts2,317
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* Total H Index Rankings
Rankings
372,783
World Rank
62
Country Rank
50
University
Ranking Based On Selection:
20
Engineering & Technology / Earth Sciences
Petroleum Geology | Seismic interpretation | Well log analysis | Reservoir Characterization | Diagenesis/reservoir qualit
Petroleum Geology | Seismic interpretation | Well log analysis | Reservoir Characterization | Diagenesis/reservoir qualit
H-Index Metrics
-
H-Index25
-
i10 Index55
-
Citation Counts2,561
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* Total H Index Rankings
Rankings
377,549
World Rank
64
Country Rank
11
University
Ranking Based On Selection:
21
Engineering & Technology / Computer Science
Power Electronics | renewable energy | Energy Economics | Artificial Intelligence | Machin
Power Electronics | renewable energy | Energy Economics | Artificial Intelligence | Machin
H-Index Metrics
-
H-Index25
-
i10 Index51
-
Citation Counts1,721
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* Total H Index Rankings
Rankings
417,935
World Rank
69
Country Rank
13
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
418,353
World Rank
70
Country Rank
14
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
Water | Waste Management | Climate Change | Sustainabilit
Water | Waste Management | Climate Change | Sustainabilit
H-Index Metrics
-
H-Index23
-
i10 Index40
-
Citation Counts2,715
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* Total H Index Rankings
Rankings
418,610
World Rank
71
Country Rank
55
University
Ranking Based On Selection:
24
Engineering & Technology / Biomaterials and Tissue Engineering
Biomaterials | Transdermal Drug Delivery | Natural Prodcut
Biomaterials | Transdermal Drug Delivery | Natural Prodcut
H-Index Metrics
-
H-Index23
-
i10 Index38
-
Citation Counts2,069
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* Total H Index Rankings
Rankings
430,081
World Rank
72
Country Rank
15
University
Ranking Based On Selection:
25
Engineering & Technology / Civil Engineering
Sustainable Construction | Procurement and Integration | Construction Industry Developmen
Sustainable Construction | Procurement and Integration | Construction Industry Developmen
H-Index Metrics
-
H-Index23
-
i10 Index39
-
Citation Counts3,390
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