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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 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
193,680
World Rank
48
Country Rank
1
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
214,964
World Rank
58
Country Rank
5
University
Ranking Based On Selection:
2
* Total H Index Rankings
Rankings
323,594
World Rank
132
Country Rank
9
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Environmental sciences | Nanohybrids | Adsorbents | Advanced Oxidative Processes | Membran
Environmental sciences | Nanohybrids | Adsorbents | Advanced Oxidative Processes | Membran
H-Index Metrics
-
H-Index27
-
i10 Index49
-
Citation Counts2,275
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* Total H Index Rankings
Rankings
354,358
World Rank
157
Country Rank
3
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
Engineering Projects | Sustainability | Sustainable Tourism | Environmental Engineerin
Engineering Projects | Sustainability | Sustainable Tourism | Environmental Engineerin
H-Index Metrics
-
H-Index26
-
i10 Index52
-
Citation Counts2,684
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* Total H Index Rankings
Rankings
391,031
World Rank
181
Country Rank
10
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Climate and health | harmful algal bloom | ocean healt
Climate and health | harmful algal bloom | ocean healt
H-Index Metrics
-
H-Index24
-
i10 Index37
-
Citation Counts2,173
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* Total H Index Rankings
Rankings
443,393
World Rank
225
Country Rank
26
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
Fresh Water | Wastewater Treatment | Bioremediation | Sustainabilit
Fresh Water | Wastewater Treatment | Bioremediation | Sustainabilit
H-Index Metrics
-
H-Index22
-
i10 Index35
-
Citation Counts2,727
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* Total H Index Rankings
Rankings
500,908
World Rank
273
Country Rank
14
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Enviromental Radioactivity | ionizing radiation | radioprotection | nanomaterial
Enviromental Radioactivity | ionizing radiation | radioprotection | nanomaterial
H-Index Metrics
-
H-Index20
-
i10 Index31
-
Citation Counts1,377
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* Total H Index Rankings
Rankings
517,772
World Rank
293
Country Rank
15
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
Environmental chemistry | detection of adulteration | Raman spectroscopy | water treatment | analytical chemistr
Environmental chemistry | detection of adulteration | Raman spectroscopy | water treatment | analytical chemistr
H-Index Metrics
-
H-Index20
-
i10 Index27
-
Citation Counts1,046
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* Total H Index Rankings
Rankings
543,115
World Rank
329
Country Rank
18
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
Rainfall | Climate in South America | ENSO | Climate Change and variability | Dynamical and statistical downscalin
Rainfall | Climate in South America | ENSO | Climate Change and variability | Dynamical and statistical downscalin
H-Index Metrics
-
H-Index19
-
i10 Index27
-
Citation Counts1,174
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* Total H Index Rankings
Rankings
569,253
World Rank
369
Country Rank
20
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Climatologia | Erosion de Suelos | Vegetatio
Climatologia | Erosion de Suelos | Vegetatio
H-Index Metrics
-
H-Index18
-
i10 Index28
-
Citation Counts1,528
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* Total H Index Rankings
Rankings
588,640
World Rank
399
Country Rank
35
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
Emission inventories. Air pollution modeling. Volcanic ash dispersio
Emission inventories. Air pollution modeling. Volcanic ash dispersio
H-Index Metrics
-
H-Index18
-
i10 Index32
-
Citation Counts1,237
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* Total H Index Rankings
Rankings
710,997
World Rank
578
Country Rank
22
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
Sustainability | Environment | Health
Sustainability | Environment | Health
H-Index Metrics
-
H-Index15
-
i10 Index20
-
Citation Counts651
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* Total H Index Rankings
Rankings
712,593
World Rank
581
Country Rank
31
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
Climate Change | Agroecology | Landscape planning | One Healt
Climate Change | Agroecology | Landscape planning | One Healt
H-Index Metrics
-
H-Index15
-
i10 Index18
-
Citation Counts980
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* Total H Index Rankings
Rankings
758,285
World Rank
652
Country Rank
45
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
Fish biology | fish diversity | fish vision | climate chang
Fish biology | fish diversity | fish vision | climate chang
H-Index Metrics
-
H-Index14
-
i10 Index15
-
Citation Counts791
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* Total H Index Rankings
Rankings
884,127
World Rank
860
Country Rank
26
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
Ambiental | Contaminaciones | Impacto ambienta
Ambiental | Contaminaciones | Impacto ambienta
H-Index Metrics
-
H-Index12
-
i10 Index12
-
Citation Counts583
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* Total H Index Rankings
Rankings
886,347
World Rank
865
Country Rank
1
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
944,471
World Rank
972
Country Rank
6
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Solar heating and cooling | buildings energy efficiency | air quality | bioenerg
Solar heating and cooling | buildings energy efficiency | air quality | bioenerg
H-Index Metrics
-
H-Index11
-
i10 Index15
-
Citation Counts975
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* Total H Index Rankings
Rankings
1,033,049
World Rank
1,148
Country Rank
37
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
IT | Environmental Sciences | Soil Microbiology | Innovatio
IT | Environmental Sciences | Soil Microbiology | Innovatio
H-Index Metrics
-
H-Index10
-
i10 Index11
-
Citation Counts396
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* Total H Index Rankings
Rankings
1,053,491
World Rank
1,198
Country Rank
11
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Medio ambiten | Fuentes renovables de Energía | Tratamiento anaerobio | Residuos sólidos biodegradable
Medio ambiten | Fuentes renovables de Energía | Tratamiento anaerobio | Residuos sólidos biodegradable
H-Index Metrics
-
H-Index10
-
i10 Index11
-
Citation Counts364
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* Total H Index Rankings
Rankings
1,072,072
World Rank
1,240
Country Rank
40
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
1,128,766
World Rank
1,322
Country Rank
28
University
Ranking Based On Selection:
21
Engineering & Technology / Environmental Science & Engineering
Ingeniería Ambiental | Materiales sustentable
Ingeniería Ambiental | Materiales sustentable
H-Index Metrics
-
H-Index9
-
i10 Index5
-
Citation Counts426
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* Total H Index Rankings
Rankings
1,211,454
World Rank
1,498
Country Rank
12
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
1,596,020
World Rank
2,568
Country Rank
28
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
1,671,578
World Rank
2,769
Country Rank
118
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Environmental Engineering | Civil Engineering | CoDa | numerical modelling | Climate chang
Environmental Engineering | Civil Engineering | CoDa | numerical modelling | Climate chang
H-Index Metrics
-
H-Index5
-
i10 Index4
-
Citation Counts105
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* Total H Index Rankings
Rankings
1,690,740
World Rank
2,843
Country Rank
29
University
Ranking Based On Selection:
25
Engineering & Technology / Environmental Science & Engineering
Sostenibilidad | Ecuador COVID 19 | Transporte y Comercio | Emprendimiento rural | Cambio Climátic
Sostenibilidad | Ecuador COVID 19 | Transporte y Comercio | Emprendimiento rural | Cambio Climátic
H-Index Metrics
-
H-Index5
-
i10 Index3
-
Citation Counts132
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Premium Data
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