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 06, 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 (0) 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
Rankings
Food Engineering | Bioseparation | Membrane Synthesis and Processes | Desalination and Water Treatmen
H-Index Metrics
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H-Index85
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i10 Index409
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Citation Counts31,345
Rankings
Blockchain | Agentic AI and LLMs | Cybersecurity | Cloud Computing | OS & Comp Network
H-Index Metrics
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H-Index81
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i10 Index249
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Citation Counts28,220
Rankings
solid mechanics | mechanics of materials | computational mechanics | damage mechanics | additive manufacturin
H-Index Metrics
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H-Index80
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i10 Index200
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Citation Counts21,544
Rankings
Rankings
Corrosion inhibition | Coordination Chemistry | Green corrosion inhibitors | Green Chemistr
H-Index Metrics
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H-Index77
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i10 Index229
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Citation Counts20,032
Rankings
Graphene | 2D Materials | Membrane separations | sustainable desalination | Research Managemen
H-Index Metrics
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H-Index76
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i10 Index153
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Citation Counts17,901
Rankings
Intelligent systems | cyber security | Big data analytics | Service-oriented computin
H-Index Metrics
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H-Index69
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i10 Index442
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Citation Counts29,578
Rankings
Energy | Reaction Engineering | Fuel Cell | Photocatalysis | Wastewater treatmen
H-Index Metrics
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H-Index68
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i10 Index205
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Citation Counts13,811
Rankings
Ionic liquids | deep eutectic solvents | green engineering | water and wastewater treatmen
H-Index Metrics
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H-Index67
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i10 Index156
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Citation Counts16,771
Rankings
Rankings
Operations research | Optimization | Combinatorial optimization | Mathematical Programming | Metaheuristic
H-Index Metrics
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H-Index67
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i10 Index207
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Citation Counts31,706
Rankings
Molecular Thermodynamics | Molecular Simulations | Carbon Capture and Utilization | Hydrogen production and storage | Adsorptio
H-Index Metrics
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H-Index66
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i10 Index233
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Citation Counts14,893
Rankings
Rankings
Rankings
separation materials | resource recovery | micro-pollutants management | green metallurgy | membrane
H-Index Metrics
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H-Index63
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i10 Index205
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Citation Counts13,583
Rankings
neuroimaging | cognitive neuroscience | brain mapping | biomedical engineering | scholarly communicatio
H-Index Metrics
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H-Index63
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i10 Index112
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Citation Counts16,867
Rankings
Rankings
water purification | wastewater treatment and reuse | water desalination | and nanotechnolog
H-Index Metrics
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H-Index60
-
i10 Index207
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Citation Counts14,497
Rankings
Digital Supply Chain | Blockchain & IoT | Supply Chain & Logistics | Healthcare Systems Engineerin
H-Index Metrics
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H-Index60
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i10 Index160
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Citation Counts13,153
Rankings
Corrosion Engineering | Electrometallurgy | Metallurgical Engineering | Extractive Metallurg
H-Index Metrics
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H-Index60
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i10 Index239
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Citation Counts14,036
Rankings
Advanced Signal Processing | Biomedical Engineering | Machine Learning | Digital Phenotyping | Biomusi
H-Index Metrics
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H-Index60
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i10 Index207
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Citation Counts13,785
Rankings
Rankings
Nanomaterials | membrane | cloud seeding materials | capacitive deionization | water purificatio
H-Index Metrics
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H-Index60
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i10 Index138
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Citation Counts15,543
Rankings
chemical engineering | applied thermodynamics | separation technolog
H-Index Metrics
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H-Index58
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i10 Index107
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Citation Counts12,546
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