World Scientist and University Rankings 2025
Nigeria Engineering & Technology 5.616 Scientists Subject Rankings - 2025
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 6 years. As of Jun 15, 2025, 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 (1.121.296) 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
47,019
World Rank
11
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-Index62
-
i10 Index224
-
Citation Counts13,290
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* Total H Index Rankings
Rankings
68,951
World Rank
20
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Process systems engineering | Biofuels Production | Solid Waste Recyclin
Process systems engineering | Biofuels Production | Solid Waste Recyclin
H-Index Metrics
-
H-Index54
-
i10 Index193
-
Citation Counts9,790
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* Total H Index Rankings
Rankings
103,838
World Rank
43
Country Rank
2
University
Ranking Based On Selection:
3
Engineering & Technology / Textile Engineering
Polymer Nanocomposites | Hybrid Bionanocomposites | Fire Retardancy | Engineering Textile
Polymer Nanocomposites | Hybrid Bionanocomposites | Fire Retardancy | Engineering Textile
H-Index Metrics
-
H-Index46
-
i10 Index96
-
Citation Counts6,045
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* Total H Index Rankings
Rankings
107,926
World Rank
46
Country Rank
2
University
Ranking Based On Selection:
4
Engineering & Technology / Computer Science
Science | computer and environmental education | quality assurance in higher educatio
Science | computer and environmental education | quality assurance in higher educatio
H-Index Metrics
-
H-Index46
-
i10 Index132
-
Citation Counts8,255
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* Total H Index Rankings
Rankings
109,248
World Rank
47
Country Rank
1
University
Ranking Based On Selection:
5
Engineering & Technology / Earth Sciences
Applied Geosciences | Environmental Science | Water/soil/air & human health | Natural hazards | AI & M
Applied Geosciences | Environmental Science | Water/soil/air & human health | Natural hazards | AI & M
H-Index Metrics
-
H-Index45
-
i10 Index96
-
Citation Counts5,616
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* Total H Index Rankings
Rankings
115,990
World Rank
55
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Food Science and Engineering
Food microbiology | Food safety | Fungal taxonomy | Mycotoxicolog
Food microbiology | Food safety | Fungal taxonomy | Mycotoxicolog
H-Index Metrics
-
H-Index44
-
i10 Index101
-
Citation Counts6,020
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* Total H Index Rankings
Rankings
121,434
World Rank
57
Country Rank
3
University
Ranking Based On Selection:
7
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-Index43
-
i10 Index107
-
Citation Counts6,249
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* Total H Index Rankings
Rankings
121,491
World Rank
58
Country Rank
1
University
Ranking Based On Selection:
8
Engineering & Technology / Food Science and Engineering
Microbiology | Biotechnology | and Nanotechnolog
Microbiology | Biotechnology | and Nanotechnolog
H-Index Metrics
-
H-Index43
-
i10 Index250
-
Citation Counts10,817
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* Total H Index Rankings
Rankings
122,123
World Rank
59
Country Rank
5
University
Ranking Based On Selection:
9
Engineering & Technology / Metallurgical & Materials Engineering
Physical Metallurgy | Mechanical Behavior of Materials | Composite Materials | Structural Integrity | Failure Analysi
Physical Metallurgy | Mechanical Behavior of Materials | Composite Materials | Structural Integrity | Failure Analysi
H-Index Metrics
-
H-Index43
-
i10 Index110
-
Citation Counts7,616
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* Total H Index Rankings
Rankings
123,775
World Rank
61
Country Rank
1
University
Ranking Based On Selection:
10
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* Total H Index Rankings
Rankings
128,951
World Rank
66
Country Rank
6
University
Ranking Based On Selection:
11
Engineering & Technology / Food Science and Engineering
Functional Foods | Nutraceuticals and Phytomedicine. Invertebrates | Drosophila and Lobster Cockroac
Functional Foods | Nutraceuticals and Phytomedicine. Invertebrates | Drosophila and Lobster Cockroac
H-Index Metrics
-
H-Index42
-
i10 Index90
-
Citation Counts7,653
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* Total H Index Rankings
Rankings
129,094
World Rank
67
Country Rank
4
University
Ranking Based On Selection:
12
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-Index42
-
i10 Index198
-
Citation Counts7,260
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* Total H Index Rankings
Rankings
129,699
World Rank
69
Country Rank
5
University
Ranking Based On Selection:
13
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-Index42
-
i10 Index68
-
Citation Counts5,095
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* Total H Index Rankings
Rankings
134,203
World Rank
76
Country Rank
4
University
Ranking Based On Selection:
14
Engineering & Technology / Textile Engineering
Polymer Science and technology | composites and polymer processin
Polymer Science and technology | composites and polymer processin
H-Index Metrics
-
H-Index42
-
i10 Index112
-
Citation Counts6,887
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* Total H Index Rankings
Rankings
135,365
World Rank
77
Country Rank
3
University
Ranking Based On Selection:
15
Engineering & Technology / Civil Engineering
Structural retrofitting | Soft computing techniques | Recycled concrete | Fire resistance | Therma
Structural retrofitting | Soft computing techniques | Recycled concrete | Fire resistance | Therma
H-Index Metrics
-
H-Index41
-
i10 Index108
-
Citation Counts5,826
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* Total H Index Rankings
Rankings
136,394
World Rank
79
Country Rank
1
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Chemical Engineering | Alternative energy and Nanotechnolog
Chemical Engineering | Alternative energy and Nanotechnolog
H-Index Metrics
-
H-Index41
-
i10 Index130
-
Citation Counts6,420
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* Total H Index Rankings
Rankings
145,595
World Rank
91
Country Rank
1
University
Ranking Based On Selection:
17
Engineering & Technology / Nanoscience and Nanotechnology
Carbon Technology | Energy Materials | Spectroscopy | Supercapacitors | LIB
Carbon Technology | Energy Materials | Spectroscopy | Supercapacitors | LIB
H-Index Metrics
-
H-Index40
-
i10 Index82
-
Citation Counts4,526
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* Total H Index Rankings
Rankings
151,244
World Rank
95
Country Rank
1
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
152,099
World Rank
100
Country Rank
17
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
157,560
World Rank
107
Country Rank
4
University
Ranking Based On Selection:
20
Engineering & Technology / Mechanical Engineering
Corrosion science and engineering | Metallurgy | Electrodeposition | Powder metallurgy | Electroless coatin
Corrosion science and engineering | Metallurgy | Electrodeposition | Powder metallurgy | Electroless coatin
H-Index Metrics
-
H-Index39
-
i10 Index133
-
Citation Counts5,309
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* Total H Index Rankings
Rankings
159,374
World Rank
109
Country Rank
9
University
Ranking Based On Selection:
21
Engineering & Technology / Metallurgical & Materials Engineering
Materials for solar energy conversion and storage | thin films | supercapacitor
Materials for solar energy conversion and storage | thin films | supercapacitor
H-Index Metrics
-
H-Index38
-
i10 Index82
-
Citation Counts4,492
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* Total H Index Rankings
Rankings
162,629
World Rank
117
Country Rank
11
University
Ranking Based On Selection:
22
Engineering & Technology / Metallurgical & Materials Engineering
METALLURGICAL AND MATERIALS ENGINEERIN
METALLURGICAL AND MATERIALS ENGINEERIN
H-Index Metrics
-
H-Index38
-
i10 Index125
-
Citation Counts5,800
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* Total H Index Rankings
Rankings
169,456
World Rank
123
Country Rank
3
University
Ranking Based On Selection:
23
Engineering & Technology / Computer Science
Data Science | Computer Vision | Machine Learning | Medical Image Analysis | Artificial Intelligenc
Data Science | Computer Vision | Machine Learning | Medical Image Analysis | Artificial Intelligenc
H-Index Metrics
-
H-Index37
-
i10 Index66
-
Citation Counts8,979
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* Total H Index Rankings
Rankings
170,838
World Rank
125
Country Rank
5
University
Ranking Based On Selection:
24
Engineering & Technology / Mechanical Engineering
Energy Systems | Energy Informatics | Energy Systems' Dynamics | Low Carbon Energy System
Energy Systems | Energy Informatics | Energy Systems' Dynamics | Low Carbon Energy System
H-Index Metrics
-
H-Index37
-
i10 Index69
-
Citation Counts4,175
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* Total H Index Rankings
Rankings
171,133
World Rank
127
Country Rank
4
University
Ranking Based On Selection:
25
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