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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
149,542
World Rank
32
Country Rank
6
University
Ranking Based On Selection:
1
Engineering & Technology / Mechanical Engineering
Life Cycle Assessment | Energy Systems Modeling | Bioenergy Systems | Microalgae | Industrial Ecolog
Life Cycle Assessment | Energy Systems Modeling | Bioenergy Systems | Microalgae | Industrial Ecolog
H-Index Metrics
-
H-Index41
-
i10 Index99
-
Citation Counts6,361
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* Total H Index Rankings
Rankings
582,349
World Rank
335
Country Rank
12
University
Ranking Based On Selection:
2
Engineering & Technology / Mechanical Engineering
Chemical and Environmental Engineering | AI | ML | CF
Chemical and Environmental Engineering | AI | ML | CF
H-Index Metrics
-
H-Index18
-
i10 Index20
-
Citation Counts1,404
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* Total H Index Rankings
Rankings
635,683
World Rank
406
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Mechanical Engineering
Mechanical Engineering | Superconductivity | materials engineering | manufacturing technology | agricultural machinerie
Mechanical Engineering | Superconductivity | materials engineering | manufacturing technology | agricultural machinerie
H-Index Metrics
-
H-Index17
-
i10 Index26
-
Citation Counts803
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* Total H Index Rankings
Rankings
794,485
World Rank
649
Country Rank
2
University
Ranking Based On Selection:
4
Engineering & Technology / Mechanical Engineering
air quality monitoring | aerosol chemical speciation | emissions inventory | receptor modelin
air quality monitoring | aerosol chemical speciation | emissions inventory | receptor modelin
H-Index Metrics
-
H-Index13
-
i10 Index18
-
Citation Counts611
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* Total H Index Rankings
Rankings
899,226
World Rank
806
Country Rank
2
University
Ranking Based On Selection:
5
Engineering & Technology / Mechanical Engineering
Mechanical Engineering | Materials Engineering | Superconductivit
Mechanical Engineering | Materials Engineering | Superconductivit
H-Index Metrics
-
H-Index12
-
i10 Index15
-
Citation Counts481
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* Total H Index Rankings
Rankings
1,022,117
World Rank
1,018
Country Rank
34
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
1,104,320
World Rank
1,181
Country Rank
123
University
Ranking Based On Selection:
7
Engineering & Technology / Mechanical Engineering
Computational fluid dynamics | Fluid structure interaction | Building energy simulation | Disaster resiliency | Thermal comfor
Computational fluid dynamics | Fluid structure interaction | Building energy simulation | Disaster resiliency | Thermal comfor
H-Index Metrics
-
H-Index9
-
i10 Index9
-
Citation Counts314
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* Total H Index Rankings
Rankings
1,223,410
World Rank
1,477
Country Rank
6
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
1,224,751
World Rank
1,479
Country Rank
7
University
Ranking Based On Selection:
9
Engineering & Technology / Mechanical Engineering
Quantitative Management | Data Analytics | Mechanical Engineering | Management Engineerin
Quantitative Management | Data Analytics | Mechanical Engineering | Management Engineerin
H-Index Metrics
-
H-Index8
-
i10 Index7
-
Citation Counts247
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* Total H Index Rankings
Rankings
1,240,722
World Rank
1,524
Country Rank
63
University
Ranking Based On Selection:
10
Engineering & Technology / Mechanical Engineering
Engineering Materials | Surface Engineering | Material Characterization | Tribology | Welding
Engineering Materials | Surface Engineering | Material Characterization | Tribology | Welding
H-Index Metrics
-
H-Index8
-
i10 Index6
-
Citation Counts175
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* Total H Index Rankings
Rankings
1,323,426
World Rank
1,748
Country Rank
5
University
Ranking Based On Selection:
11
Engineering & Technology / Mechanical Engineering
Material Behavior | Mechanical Engineering | Additive Manufacturin
Material Behavior | Mechanical Engineering | Additive Manufacturin
H-Index Metrics
-
H-Index7
-
i10 Index7
-
Citation Counts270
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* Total H Index Rankings
Rankings
1,332,342
World Rank
1,776
Country Rank
503
University
Ranking Based On Selection:
12
Engineering & Technology / Mechanical Engineering
Mechanical Engineering | Renewable Energy | Fluid dynamic
Mechanical Engineering | Renewable Energy | Fluid dynamic
H-Index Metrics
-
H-Index7
-
i10 Index7
-
Citation Counts162
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* Total H Index Rankings
Rankings
1,353,928
World Rank
1,840
Country Rank
3
University
Ranking Based On Selection:
13
Engineering & Technology / Mechanical Engineering
superconductivity | material measurement behavior | mechanical propertie
superconductivity | material measurement behavior | mechanical propertie
H-Index Metrics
-
H-Index7
-
i10 Index6
-
Citation Counts161
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* Total H Index Rankings
Rankings
1,355,662
World Rank
1,846
Country Rank
81
University
Ranking Based On Selection:
14
Engineering & Technology / Mechanical Engineering
Nano fluids | Refrigeration | Phase change materials | Motor cooling | Two phase flow
Nano fluids | Refrigeration | Phase change materials | Motor cooling | Two phase flow
H-Index Metrics
-
H-Index7
-
i10 Index6
-
Citation Counts149
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* Total H Index Rankings
Rankings
1,359,060
World Rank
1,856
Country Rank
83
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
1,405,481
World Rank
2,011
Country Rank
4
University
Ranking Based On Selection:
16
Engineering & Technology / Mechanical Engineering
Mechanical Engineering | Bio-production Engineering | Environmental Resources | Mechatronic
Mechanical Engineering | Bio-production Engineering | Environmental Resources | Mechatronic
H-Index Metrics
-
H-Index7
-
i10 Index5
-
Citation Counts478
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* Total H Index Rankings
Rankings
1,422,200
World Rank
2,069
Country Rank
187
University
Ranking Based On Selection:
17
Engineering & Technology / Mechanical Engineering
Micro Hydro | Fluid Machines | Electric Vehicles | Machine Design | Industrial Desig
Micro Hydro | Fluid Machines | Electric Vehicles | Machine Design | Industrial Desig
H-Index Metrics
-
H-Index7
-
i10 Index3
-
Citation Counts110
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* Total H Index Rankings
Rankings
1,422,358
World Rank
2,070
Country Rank
102
University
Ranking Based On Selection:
18
Engineering & Technology / Mechanical Engineering
CFD | Heat transfer | Polymer Science | Thermal Management | Math. modeling & numerical method
CFD | Heat transfer | Polymer Science | Thermal Management | Math. modeling & numerical method
H-Index Metrics
-
H-Index7
-
i10 Index3
-
Citation Counts102
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* Total H Index Rankings
Rankings
1,723,074
World Rank
3,257
Country Rank
257
University
Ranking Based On Selection:
19
Engineering & Technology / Mechanical Engineering
Finite Element Analysis | Computational Fluid Dynamics | Semiconductor packaging | Biohydrogen | Waste-to-energ
Finite Element Analysis | Computational Fluid Dynamics | Semiconductor packaging | Biohydrogen | Waste-to-energ
H-Index Metrics
-
H-Index5
-
i10 Index2
-
Citation Counts94
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* Total H Index Rankings
Rankings
1,741,291
World Rank
3,377
Country Rank
40
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
1,749,197
World Rank
3,439
Country Rank
59
University
Ranking Based On Selection:
21
Engineering & Technology / Mechanical Engineering
mechanical engineering | thermal systems | ventilation and air conditioning systems | energy managemen
mechanical engineering | thermal systems | ventilation and air conditioning systems | energy managemen
H-Index Metrics
-
H-Index5
-
i10 Index0
-
Citation Counts52
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* Total H Index Rankings
Rankings
1,777,039
World Rank
3,587
Country Rank
194
University
Ranking Based On Selection:
22
Engineering & Technology / Mechanical Engineering
Thermodynamics | Building Heat Transfer | Waste Heat Recovery | Low Energy Coolin
Thermodynamics | Building Heat Transfer | Waste Heat Recovery | Low Energy Coolin
H-Index Metrics
-
H-Index5
-
i10 Index3
-
Citation Counts62
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* Total H Index Rankings
Rankings
1,787,576
World Rank
3,643
Country Rank
199
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
1,830,282
World Rank
3,840
Country Rank
66
University
Ranking Based On Selection:
24
Engineering & Technology / Mechanical Engineering
refrigeration and air conditioning | mechanical engineering | technology education/managemen
refrigeration and air conditioning | mechanical engineering | technology education/managemen
H-Index Metrics
-
H-Index4
-
i10 Index4
-
Citation Counts149
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* Total H Index Rankings
Rankings
1,861,451
World Rank
4,032
Country Rank
1,027
University
Ranking Based On Selection:
25
Engineering & Technology / Mechanical Engineering
heating | ventilation | air conditioning and refrigeration (HVAC-R
heating | ventilation | air conditioning and refrigeration (HVAC-R
H-Index Metrics
-
H-Index4
-
i10 Index3
-
Citation Counts89
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