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World Scientist and University Rankings 2026
Portugal Natural Sciences 1.067 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 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 (0) 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
20
World Rank
1
Country Rank
1
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
118
World Rank
2
Country Rank
1
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
162
World Rank
3
Country Rank
2
University
Ranking Based On Selection:
3
* Total H Index Rankings
Rankings
530
World Rank
4
Country Rank
3
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
612
World Rank
5
Country Rank
1
University
Ranking Based On Selection:
5
Natural Sciences / Physics
Physics | High Energy Physics | New Physics Searches | Top Quark Physics | Machine Learnin
Physics | High Energy Physics | New Physics Searches | Top Quark Physics | Machine Learnin
H-Index Metrics
-
H-Index211
-
i10 Index884
-
Citation Counts262,103
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* Total H Index Rankings
Rankings
2,314
World Rank
9
Country Rank
1
University
Ranking Based On Selection:
6
Natural Sciences / Chemical Sciences
Natural products | Food Chemistry | Food Tecnology | Chemical characterization | Additive
Natural products | Food Chemistry | Food Tecnology | Chemical characterization | Additive
H-Index Metrics
-
H-Index147
-
i10 Index929
-
Citation Counts92,134
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* Total H Index Rankings
Rankings
5,048
World Rank
11
Country Rank
2
University
Ranking Based On Selection:
7
Natural Sciences / Chemical Sciences
Natural products | Food Chemistry | Food Tecnology | Chemical characterization | Phenolic compound
Natural products | Food Chemistry | Food Tecnology | Chemical characterization | Phenolic compound
H-Index Metrics
-
H-Index121
-
i10 Index697
-
Citation Counts58,166
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Premium Data
* Total H Index Rankings
Rankings
6,789
World Rank
14
Country Rank
2
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
9,615
World Rank
21
Country Rank
4
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
12,301
World Rank
26
Country Rank
1
University
Ranking Based On Selection:
10
Natural Sciences / Chemical Sciences
Bioactives | Bioproducts | Functional Ingredients | By-products | Circular Econom
Bioactives | Bioproducts | Functional Ingredients | By-products | Circular Econom
H-Index Metrics
-
H-Index96
-
i10 Index514
-
Citation Counts36,898
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* Total H Index Rankings
Rankings
12,349
World Rank
28
Country Rank
6
University
Ranking Based On Selection:
11
Natural Sciences / Physics
Astrophysics | galaxy evolution | dark matter in galaxies | massive stars in galaxies | integral field spectroscop
Astrophysics | galaxy evolution | dark matter in galaxies | massive stars in galaxies | integral field spectroscop
H-Index Metrics
-
H-Index96
-
i10 Index248
-
Citation Counts62,079
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* Total H Index Rankings
Rankings
12,891
World Rank
32
Country Rank
8
University
Ranking Based On Selection:
12
Natural Sciences / Chemical Sciences
Catalysis | Environmental Technologies | Carbon Materials | Functional Materials | Reaction Engineerin
Catalysis | Environmental Technologies | Carbon Materials | Functional Materials | Reaction Engineerin
H-Index Metrics
-
H-Index95
-
i10 Index407
-
Citation Counts39,775
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* Total H Index Rankings
Rankings
13,643
World Rank
38
Country Rank
9
University
Ranking Based On Selection:
13
Natural Sciences / Physics
cosmic rays | solar modulation | astroparticle physics | electromagnetic fields | computational physic
cosmic rays | solar modulation | astroparticle physics | electromagnetic fields | computational physic
H-Index Metrics
-
H-Index94
-
i10 Index314
-
Citation Counts35,807
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* Total H Index Rankings
Rankings
13,955
World Rank
40
Country Rank
1
University
Ranking Based On Selection:
14
Natural Sciences / Mathematical Sciences
Nonlinear Dynamics | Modelling | Fractional Calculus | Complex Systems | Entrop
Nonlinear Dynamics | Modelling | Fractional Calculus | Complex Systems | Entrop
H-Index Metrics
-
H-Index93
-
i10 Index599
-
Citation Counts43,626
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* Total H Index Rankings
Rankings
14,625
World Rank
42
Country Rank
11
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
15,958
World Rank
46
Country Rank
4
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
18,414
World Rank
53
Country Rank
6
University
Ranking Based On Selection:
17
Natural Sciences / Biological Science
Ecology | Biodiversity | Plant Sciences | Ecosystem Services | Agroecolog
Ecology | Biodiversity | Plant Sciences | Ecosystem Services | Agroecolog
H-Index Metrics
-
H-Index86
-
i10 Index236
-
Citation Counts32,309
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* Total H Index Rankings
Rankings
19,189
World Rank
55
Country Rank
1
University
Ranking Based On Selection:
18
Natural Sciences / Mathematical Sciences
Statistical Analysis | Structural Equation modelling | Psychometrics | International Large Scale Asses
Statistical Analysis | Structural Equation modelling | Psychometrics | International Large Scale Asses
H-Index Metrics
-
H-Index85
-
i10 Index340
-
Citation Counts54,323
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* Total H Index Rankings
Rankings
19,859
World Rank
56
Country Rank
15
University
Ranking Based On Selection:
19
Natural Sciences / Physics
General Relativity | Gravitation | Modified Theories of Gravity | Cosmology | Relativistic Astrophysic
General Relativity | Gravitation | Modified Theories of Gravity | Cosmology | Relativistic Astrophysic
H-Index Metrics
-
H-Index84
-
i10 Index211
-
Citation Counts27,648
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Premium Data
* Total H Index Rankings
Rankings
21,346
World Rank
61
Country Rank
6
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
24,849
World Rank
69
Country Rank
10
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
25,233
World Rank
70
Country Rank
7
University
Ranking Based On Selection:
22
Natural Sciences / Chemical Sciences
biochemistry | spectroscopy | protein chemistry | metalloprotein
biochemistry | spectroscopy | protein chemistry | metalloprotein
H-Index Metrics
-
H-Index79
-
i10 Index345
-
Citation Counts22,074
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* Total H Index Rankings
Rankings
27,304
World Rank
77
Country Rank
8
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
30,091
World Rank
84
Country Rank
11
University
Ranking Based On Selection:
24
Natural Sciences / Biological Science
Industrial Biotechnology | Synthetic Biology | Prebiotics | Cance
Industrial Biotechnology | Synthetic Biology | Prebiotics | Cance
H-Index Metrics
-
H-Index74
-
i10 Index211
-
Citation Counts18,977
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Premium Data
* Total H Index Rankings
Rankings
30,497
World Rank
86
Country Rank
12
University
Ranking Based On Selection:
25
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