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 02, 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
Bioprocess Engineering | Biotechnology | Environmental Engineerin
H-Index Metrics
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H-Index74
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i10 Index192
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Citation Counts19,652
Rankings
Membrane Processes | Water Reuse | Water Treatment | Wastewater Treatmen
H-Index Metrics
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H-Index57
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i10 Index204
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Citation Counts11,562
Rankings
Rankings
Air Pollution | persistent organic pollutant
H-Index Metrics
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H-Index50
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i10 Index82
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Citation Counts7,510
Rankings
Rankings
Membrane Processes | water and wastewater recovery | biotechnolog
H-Index Metrics
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H-Index49
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i10 Index117
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Citation Counts7,697
Rankings
çevre kimyası | kimyasal arıtma prosesleri | ileri oksidasyon prosesleri | ozonlama | su ve atıksu arıtım
H-Index Metrics
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H-Index49
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i10 Index119
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Citation Counts9,421
Rankings
membrane processes | water/wastewater treatment | reuse | clean production | DBP
H-Index Metrics
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H-Index49
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i10 Index74
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Citation Counts8,085
Rankings
Environmental science and technology | nanoremediation | Water pollution control | Advanced treatmen
H-Index Metrics
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H-Index46
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i10 Index92
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Citation Counts11,271
Rankings
anaerobik aerobik arıtma | ekotoksikoloji | toksik kirleticiler | endüstri atıks
H-Index Metrics
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H-Index42
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i10 Index83
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Citation Counts6,164
Rankings
Rankings
Rankings
Environmental Engineering | Biotechnology | Activated Sludge Modeling | Industrial Pollution Control | Reuse-Recover
H-Index Metrics
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H-Index37
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i10 Index105
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Citation Counts5,035
Rankings
Water Treatment | Wastewater Treatment | Environmental Biotechnology | Adsorption Processes | Effects of Hazardous Substances on Bi
H-Index Metrics
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H-Index37
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i10 Index57
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Citation Counts4,141
Rankings
Environmental Engineering | Water and water treatment | Water chemistry | Industrial Waste Managemen
H-Index Metrics
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H-Index36
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i10 Index72
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Citation Counts4,600
Rankings
Environmental biotechnology | bioenergy | green chemistr
H-Index Metrics
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H-Index36
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i10 Index58
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Citation Counts5,353
Rankings
Rankings
environmental engineering | air pollution and control | atmospheric deposition | exchange processe
H-Index Metrics
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H-Index35
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i10 Index81
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Citation Counts4,175
Rankings
Rankings
wastewater treatment | anaerobic biotechnology | membrane technology | anaerobic membrane bioreactor | dynamic membran
H-Index Metrics
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H-Index34
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i10 Index66
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Citation Counts4,781
Rankings
Environmental Biotechnology | Resource Recover
H-Index Metrics
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H-Index34
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i10 Index58
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Citation Counts3,590
Rankings
atmospheric pollution | aerosol | remote sensin
H-Index Metrics
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H-Index33
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i10 Index52
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Citation Counts3,588
Rankings
Rankings
indoor air quality | environmental exposure and risk assessmen
H-Index Metrics
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H-Index32
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i10 Index52
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Citation Counts3,505
Rankings
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