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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 05, 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].
* Total H Index Rankings
Rankings
150,215
World Rank
67
Country Rank
22
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
177,250
World Rank
80
Country Rank
26
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
313,885
World Rank
255
Country Rank
64
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Water policy and management | Pollution prevention and Cleaner production | Waste managemen
Water policy and management | Pollution prevention and Cleaner production | Waste managemen
H-Index Metrics
-
H-Index28
-
i10 Index38
-
Citation Counts2,376
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* Total H Index Rankings
Rankings
322,475
World Rank
267
Country Rank
64
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
bioenergy | separation | wastewater treatment | thermodynamics | fermentatio
bioenergy | separation | wastewater treatment | thermodynamics | fermentatio
H-Index Metrics
-
H-Index28
-
i10 Index46
-
Citation Counts2,484
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* Total H Index Rankings
Rankings
338,105
World Rank
297
Country Rank
2
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Chemical Industries | Desalination | Fertilizers | Pharmaceuticals | Qur'an and Linguistic
Chemical Industries | Desalination | Fertilizers | Pharmaceuticals | Qur'an and Linguistic
H-Index Metrics
-
H-Index27
-
i10 Index57
-
Citation Counts1,919
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* Total H Index Rankings
Rankings
342,351
World Rank
301
Country Rank
75
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Chemical Engineering | Industrial Mathematics | Process Modeling and Simulation | CFD of Two-phase flo
Chemical Engineering | Industrial Mathematics | Process Modeling and Simulation | CFD of Two-phase flo
H-Index Metrics
-
H-Index27
-
i10 Index54
-
Citation Counts2,159
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* Total H Index Rankings
Rankings
399,041
World Rank
405
Country Rank
99
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
409,872
World Rank
428
Country Rank
103
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
417,241
World Rank
443
Country Rank
16
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Supercritical Fluids | Aerogel | Life Science Application | renewable energy | Uranium Hydrometallurg
Supercritical Fluids | Aerogel | Life Science Application | renewable energy | Uranium Hydrometallurg
H-Index Metrics
-
H-Index23
-
i10 Index31
-
Citation Counts3,514
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* Total H Index Rankings
Rankings
431,029
World Rank
471
Country Rank
110
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
431,354
World Rank
473
Country Rank
11
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Chemical Engineering | Adsorption | Catalytic reactio
Chemical Engineering | Adsorption | Catalytic reactio
H-Index Metrics
-
H-Index23
-
i10 Index31
-
Citation Counts2,015
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* Total H Index Rankings
Rankings
459,251
World Rank
543
Country Rank
33
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
Water and environment | ISO 14000 | GIS | Climate change | Chemical Industrie
Water and environment | ISO 14000 | GIS | Climate change | Chemical Industrie
H-Index Metrics
-
H-Index22
-
i10 Index37
-
Citation Counts1,940
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* Total H Index Rankings
Rankings
512,628
World Rank
652
Country Rank
165
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
Material Science and Engineering | Material Nanotechnology (mainly nanocomposites
Material Science and Engineering | Material Nanotechnology (mainly nanocomposites
H-Index Metrics
-
H-Index20
-
i10 Index31
-
Citation Counts1,175
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* Total H Index Rankings
Rankings
514,527
World Rank
658
Country Rank
167
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
Desalination | membrane technology | solar energy | heat and mass transfe
Desalination | membrane technology | solar energy | heat and mass transfe
H-Index Metrics
-
H-Index20
-
i10 Index24
-
Citation Counts3,925
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* Total H Index Rankings
Rankings
524,708
World Rank
680
Country Rank
43
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Crystallization | water desalination | water treatmen
Crystallization | water desalination | water treatmen
H-Index Metrics
-
H-Index20
-
i10 Index28
-
Citation Counts1,123
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* Total H Index Rankings
Rankings
591,018
World Rank
851
Country Rank
23
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
632,433
World Rank
965
Country Rank
70
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
643,945
World Rank
1,008
Country Rank
218
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Olive mill wastewater | oil shale | catalysis | wastewater treatment | composite material
Olive mill wastewater | oil shale | catalysis | wastewater treatment | composite material
H-Index Metrics
-
H-Index17
-
i10 Index19
-
Citation Counts1,077
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* Total H Index Rankings
Rankings
644,020
World Rank
1,009
Country Rank
219
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Renewable Energy | Environment | Nanotechnolgy | Utilization of Solid wastes | Film coatin
Renewable Energy | Environment | Nanotechnolgy | Utilization of Solid wastes | Film coatin
H-Index Metrics
-
H-Index17
-
i10 Index18
-
Citation Counts1,342
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* Total H Index Rankings
Rankings
647,166
World Rank
1,016
Country Rank
264
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Chemical Engineering: Modeling | simulation and contro
Chemical Engineering: Modeling | simulation and contro
H-Index Metrics
-
H-Index17
-
i10 Index21
-
Citation Counts854
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* Total H Index Rankings
Rankings
648,901
World Rank
1,022
Country Rank
71
University
Ranking Based On Selection:
21
Engineering & Technology / Chemical Engineering
Water and Wastewater treatment | Advanced Oxidation Processes | Process Modeling | Nanotechnology and Ener
Water and Wastewater treatment | Advanced Oxidation Processes | Process Modeling | Nanotechnology and Ener
H-Index Metrics
-
H-Index16
-
i10 Index24
-
Citation Counts1,051
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* Total H Index Rankings
Rankings
662,315
World Rank
1,052
Country Rank
73
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
Oil shale pyrolysis | Biomass kinetics | Kinetic Modelling | Hydraulic fracking fluids | Crude oi
Oil shale pyrolysis | Biomass kinetics | Kinetic Modelling | Hydraulic fracking fluids | Crude oi
H-Index Metrics
-
H-Index16
-
i10 Index24
-
Citation Counts1,242
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* Total H Index Rankings
Rankings
711,108
World Rank
1,219
Country Rank
41
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
721,338
World Rank
1,249
Country Rank
261
University
Ranking Based On Selection:
24
* Total H Index Rankings
Rankings
732,162
World Rank
1,279
Country Rank
95
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Energy & Conversion | Membranes and nanotubes technologies | electrochemical | Industrial wastes and contaminants treatment and re
Energy & Conversion | Membranes and nanotubes technologies | electrochemical | Industrial wastes and contaminants treatment and re
H-Index Metrics
-
H-Index15
-
i10 Index16
-
Citation Counts942
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