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 04, 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 (1.131.911) 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
Cavitation | Sonochemistry | Design of multiphase reactors (Mechanically Agitated contactors | Bubble columns) | Wastewater treatme
H-Index Metrics
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H-Index109
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i10 Index401
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Citation Counts42,756
Rankings
Waste Biorefinery | Green Hydrogen | Microbial Fuel Cell | Algal Biorefinery | Circular Bioeconom
H-Index Metrics
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H-Index107
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i10 Index478
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Citation Counts39,935
Rankings
Chemical Engineering | Sonochemistry | Cavitation | Wastewater treatmen
H-Index Metrics
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H-Index105
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i10 Index380
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Citation Counts39,345
Rankings
Rankings
Food science and technology | Carbohydrate chemistry and technology | Bioprocess technolog
H-Index Metrics
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H-Index86
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i10 Index377
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Citation Counts31,923
Rankings
Catalysis | Green Chemistry | Homogeneous Catalysis | Organometallic Chemistry | Chemical Engineerin
H-Index Metrics
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H-Index77
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i10 Index415
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Citation Counts22,111
Rankings
Rankings
Rankings
Net Zero | Green H2 | Green Chem & Eng+Hetero Catal + PTC) | Sustainabilit
H-Index Metrics
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H-Index72
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i10 Index388
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Citation Counts21,116
Rankings
Rankings
Pharmacology | Pharmaceutics | Novel Drug Delivery System
H-Index Metrics
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H-Index66
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i10 Index203
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Citation Counts13,620
Rankings
Single-Atom Catalysts | Nanocatalysis | Green synthesis | Benign reaction technologie
H-Index Metrics
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H-Index63
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i10 Index142
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Citation Counts19,852
Rankings
nanotechnology | medical devices | cosmeceuticals | lipid delivery system
H-Index Metrics
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H-Index63
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i10 Index195
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Citation Counts16,299
Rankings
Nanomedicine | Drug Delivery | Biomaterials | Angiogenesis | Cancer Nanotechnolog
H-Index Metrics
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H-Index61
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i10 Index130
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Citation Counts11,926
Rankings
Rankings
Rankings
Rankings
Seaweed Biology | biofuels | seaweed farming and Cellular biotechnolog
H-Index Metrics
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H-Index54
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i10 Index103
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Citation Counts9,517
Rankings
Chemical Engineering | Membrane Science and Technology | Separation Processes | Polymer Scienc
H-Index Metrics
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H-Index55
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i10 Index127
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Citation Counts12,205
Rankings
Synthesis of Organic Dyes | Photoredox Catalysis(C-H Activation) | Organic Solar Cel
H-Index Metrics
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H-Index52
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i10 Index239
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Citation Counts10,483
Rankings
Food Science & Technology | Cold Plasma | Extrusion | Plant and Microbial Polysaccharide
H-Index Metrics
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H-Index52
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i10 Index151
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Citation Counts10,797
Rankings
Rankings
Hierarchical structured Materials Developmen
H-Index Metrics
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H-Index51
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i10 Index106
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Citation Counts9,504
Rankings
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