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].
Rankings
Nanotechnology | Ultrasound | Pharmaceuticals | Water treatment | Extractio
H-Index Metrics
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H-Index76
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i10 Index263
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Citation Counts18,162
Rankings
Process Modeling Control and Optimization | Systems Engineering | AI-ML | nanomaterial | Remediatio
H-Index Metrics
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H-Index60
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i10 Index166
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Citation Counts10,840
Rankings
Environmental Engineering | Water and Wastewater Treatment | Solid Waste Managemen
H-Index Metrics
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H-Index53
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i10 Index170
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Citation Counts15,645
Rankings
Energy | Functional Materials | Fuel Cells | Biomass | Photocatalys
H-Index Metrics
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H-Index48
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i10 Index140
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Citation Counts12,525
Rankings
Bioanalytical Chemistry | Bio/Nano materials | Biosensors | Diagnostics | Food Chemistr
H-Index Metrics
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H-Index43
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i10 Index103
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Citation Counts6,071
Rankings
Rankings
Vibration | Mechanical and Manufacturing Engineering | Mechatronics | Machine Learnin
H-Index Metrics
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H-Index39
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i10 Index124
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Citation Counts6,571
Rankings
plasmonics | machine learning algorithms | Environmental chemistry | wastewater remediation | Water sensor
H-Index Metrics
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H-Index37
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i10 Index59
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Citation Counts3,285
Rankings
Speech Processing | Smart Grid | Smart Sensors | Smart Hom
H-Index Metrics
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H-Index37
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i10 Index83
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Citation Counts6,711
Rankings
Biomass Characterisation | Catalytic Pyrolysis of Biomass | Biorefinery | Renewable Energy | Circular Bioeconom
H-Index Metrics
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H-Index36
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i10 Index58
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Citation Counts4,181
Rankings
Machining | Sustainable Manufacturing | Intelligent Manufacturing | Optimizatio
H-Index Metrics
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H-Index32
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i10 Index63
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Citation Counts2,907
Rankings
Petrogenesis of Ophiolites | Chromites and PGE | Soil Geochemistry | Synthesis of Abiotic Methan
H-Index Metrics
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H-Index32
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i10 Index78
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Citation Counts2,834
Rankings
Rankings
Hetereogeneous catalysis | Nanotechnology | Green Energ
H-Index Metrics
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H-Index28
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i10 Index53
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Citation Counts2,726
Rankings
Manufacturing | Micromachining | Engineering Design | Engineering Management | Project Managemen
H-Index Metrics
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H-Index28
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i10 Index72
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Citation Counts2,816
Rankings
Artificial Intelligence | Neural Network | Embedded Systems | Smart Sensor
H-Index Metrics
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H-Index27
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i10 Index39
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Citation Counts2,442
Rankings
Computational Intelligence | Metaheuristics | Optimization | Machine Learnin
H-Index Metrics
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H-Index27
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i10 Index40
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Citation Counts6,844
Rankings
Thermodynamics | Heat Transfer | Fluid Mechanics | Computational Fluid Dynamics | Refrigeration and Air Conditionin
H-Index Metrics
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H-Index27
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i10 Index45
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Citation Counts2,494
Rankings
Polymer composites and nano-composites | flame retardant polymers | Enhanced Oil Recovery (EOR
H-Index Metrics
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H-Index26
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i10 Index65
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Citation Counts2,317
Rankings
Petroleum Geology | Seismic interpretation | Well log analysis | Reservoir Characterization | Diagenesis/reservoir qualit
H-Index Metrics
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H-Index25
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i10 Index55
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Citation Counts2,561
Rankings
Power Electronics | renewable energy | Energy Economics | Artificial Intelligence | Machin
H-Index Metrics
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H-Index25
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i10 Index51
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Citation Counts1,721
Rankings
Rankings
Water | Waste Management | Climate Change | Sustainabilit
H-Index Metrics
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H-Index23
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i10 Index40
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Citation Counts2,715
Rankings
Biomaterials | Transdermal Drug Delivery | Natural Prodcut
H-Index Metrics
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H-Index23
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i10 Index38
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Citation Counts2,069
Rankings
Sustainable Construction | Procurement and Integration | Construction Industry Developmen
H-Index Metrics
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H-Index23
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i10 Index39
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Citation Counts3,390
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