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University, Subject, Country, Region, World
Nigeria 251 Scientists Subject Rankings
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].
* Total H Index Rankings
Rankings
37,166
World Rank
10
Country Rank
1
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Environmental Sustainability | Clean Energy | Nanomaterials | Catalysi
Environmental Sustainability | Clean Energy | Nanomaterials | Catalysi
H-Index Metrics
-
H-Index69
-
i10 Index239
-
Citation Counts15,851
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* Total H Index Rankings
Rankings
61,729
World Rank
21
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Sustainable Materials | Biofuels Production | Solid Waste Recycling | Biocha
Sustainable Materials | Biofuels Production | Solid Waste Recycling | Biocha
H-Index Metrics
-
H-Index58
-
i10 Index210
-
Citation Counts11,344
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* Total H Index Rankings
Rankings
106,691
World Rank
55
Country Rank
3
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Wastewater treatment | Biomass | Biogas | Modeling and Optimization | Chemical Engineerin
Wastewater treatment | Biomass | Biogas | Modeling and Optimization | Chemical Engineerin
H-Index Metrics
-
H-Index47
-
i10 Index120
-
Citation Counts7,334
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* Total H Index Rankings
Rankings
131,918
World Rank
80
Country Rank
4
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Kinetics and catalysis | composite Studies | Adsorption/Coagulation Studies | Corrosion | Bioenerg
Kinetics and catalysis | composite Studies | Adsorption/Coagulation Studies | Corrosion | Bioenerg
H-Index Metrics
-
H-Index43
-
i10 Index212
-
Citation Counts7,901
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* Total H Index Rankings
Rankings
132,194
World Rank
81
Country Rank
3
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Chemical Engineering | Alternative energy and Nanotechnolog
Chemical Engineering | Alternative energy and Nanotechnolog
H-Index Metrics
-
H-Index43
-
i10 Index140
-
Citation Counts7,439
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* Total H Index Rankings
Rankings
132,676
World Rank
82
Country Rank
5
University
Ranking Based On Selection:
6
Engineering & Technology / Chemical Engineering
Biofuel Development | Bioprocessing | Catalysis | Process Modeling and Optimization | Process Intensificatio
Biofuel Development | Bioprocessing | Catalysis | Process Modeling and Optimization | Process Intensificatio
H-Index Metrics
-
H-Index43
-
i10 Index74
-
Citation Counts5,513
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* Total H Index Rankings
Rankings
187,601
World Rank
170
Country Rank
3
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Biochemical Engineering | Bioenvironmental Engineering | Bioenergy Technology | Bioremediation Technolog
Biochemical Engineering | Bioenvironmental Engineering | Bioenergy Technology | Bioremediation Technolog
H-Index Metrics
-
H-Index37
-
i10 Index90
-
Citation Counts3,802
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* Total H Index Rankings
Rankings
195,109
World Rank
186
Country Rank
6
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
198,338
World Rank
195
Country Rank
10
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Applied Catalysis | Water Treatment | Heavy Oil Upgradin
Applied Catalysis | Water Treatment | Heavy Oil Upgradin
H-Index Metrics
-
H-Index36
-
i10 Index68
-
Citation Counts3,114
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* Total H Index Rankings
Rankings
227,806
World Rank
256
Country Rank
3
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
Catalysis | renewable energy | adsorption | wastewater management | material science and engineerin
Catalysis | renewable energy | adsorption | wastewater management | material science and engineerin
H-Index Metrics
-
H-Index33
-
i10 Index85
-
Citation Counts4,172
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* Total H Index Rankings
Rankings
261,631
World Rank
344
Country Rank
12
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Environmental Chemical Engineering | Raw materials processing and utilization | Biomass energ
Environmental Chemical Engineering | Raw materials processing and utilization | Biomass energ
H-Index Metrics
-
H-Index31
-
i10 Index65
-
Citation Counts3,135
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* Total H Index Rankings
Rankings
273,006
World Rank
367
Country Rank
6
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
Physical Chem. | Materials Chem. | Environmental Chemical Eng
Physical Chem. | Materials Chem. | Environmental Chemical Eng
H-Index Metrics
-
H-Index30
-
i10 Index55
-
Citation Counts2,335
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* Total H Index Rankings
Rankings
286,203
World Rank
411
Country Rank
8
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
294,452
World Rank
443
Country Rank
11
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
Multiphase flow | Petroleum | Chemical Engineering | Computational Fluid Dynamics (CFD) | Modellin
Multiphase flow | Petroleum | Chemical Engineering | Computational Fluid Dynamics (CFD) | Modellin
H-Index Metrics
-
H-Index29
-
i10 Index48
-
Citation Counts2,245
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* Total H Index Rankings
Rankings
310,616
World Rank
494
Country Rank
9
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Bioresource valorization | Heterogeneous catalysis | Biofuels | Organic acids | Pollution managemen
Bioresource valorization | Heterogeneous catalysis | Biofuels | Organic acids | Pollution managemen
H-Index Metrics
-
H-Index28
-
i10 Index76
-
Citation Counts3,066
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* Total H Index Rankings
Rankings
326,542
World Rank
546
Country Rank
14
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
352,937
World Rank
634
Country Rank
18
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
Zeolites | Catalysis | Separation | Sustainable environmental Technolog
Zeolites | Catalysis | Separation | Sustainable environmental Technolog
H-Index Metrics
-
H-Index26
-
i10 Index42
-
Citation Counts2,343
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* Total H Index Rankings
Rankings
366,911
World Rank
690
Country Rank
10
University
Ranking Based On Selection:
18
Engineering & Technology / Chemical Engineering
Adsorption | Corrosion | Water Treatment | Environmental Engineering | Renewable energ
Adsorption | Corrosion | Water Treatment | Environmental Engineering | Renewable energ
H-Index Metrics
-
H-Index25
-
i10 Index44
-
Citation Counts3,138
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* Total H Index Rankings
Rankings
369,390
World Rank
704
Country Rank
35
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Wastewater treatment | Bioenergy | Fuels and Chemicals from wastes | Environmental Engineerin
Wastewater treatment | Bioenergy | Fuels and Chemicals from wastes | Environmental Engineerin
H-Index Metrics
-
H-Index25
-
i10 Index36
-
Citation Counts2,465
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* Total H Index Rankings
Rankings
373,155
World Rank
725
Country Rank
39
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Chemical Engineering | (renewable Energy | Reaction Engineering) Bio-chemical Engineering (Environmental) Product Development
Chemical Engineering | (renewable Energy | Reaction Engineering) Bio-chemical Engineering (Environmental) Product Development
H-Index Metrics
-
H-Index25
-
i10 Index46
-
Citation Counts1,780
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* Total H Index Rankings
Rankings
375,693
World Rank
736
Country Rank
20
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
386,761
World Rank
777
Country Rank
1
University
Ranking Based On Selection:
22
Engineering & Technology / Chemical Engineering
Modelling | Simulation | Control | Reservoir Modelling and Simulation | AI Modelling and Simulatio
Modelling | Simulation | Control | Reservoir Modelling and Simulation | AI Modelling and Simulatio
H-Index Metrics
-
H-Index25
-
i10 Index51
-
Citation Counts1,584
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* Total H Index Rankings
Rankings
396,125
World Rank
821
Country Rank
38
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
420,376
World Rank
945
Country Rank
40
University
Ranking Based On Selection:
24
Engineering & Technology / Chemical Engineering
Deep learning | Generative AI | Digital forensics and Data Scienc
Deep learning | Generative AI | Digital forensics and Data Scienc
H-Index Metrics
-
H-Index23
-
i10 Index67
-
Citation Counts2,331
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* Total H Index Rankings
Rankings
445,898
World Rank
1,083
Country Rank
4
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Materials | Process | Energy Systems and Environmental Engineerin
Materials | Process | Energy Systems and Environmental Engineerin
H-Index Metrics
-
H-Index22
-
i10 Index38
-
Citation Counts1,821
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