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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 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 (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
123,592
World Rank
28
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
Environment | Ranking | Partial order | Hasse | QSA
Environment | Ranking | Partial order | Hasse | QSA
H-Index Metrics
-
H-Index45
-
i10 Index165
-
Citation Counts7,495
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* Total H Index Rankings
Rankings
206,201
World Rank
51
Country Rank
37
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Air pollution | Sustainability | Environmental Managemen
Air pollution | Sustainability | Environmental Managemen
H-Index Metrics
-
H-Index35
-
i10 Index81
-
Citation Counts5,016
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* Total H Index Rankings
Rankings
398,687
World Rank
132
Country Rank
89
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Environmental Engineering/Chemistry | Water/Wastewater Treatment | Nanomaterials | Sustainability | Energ
Environmental Engineering/Chemistry | Water/Wastewater Treatment | Nanomaterials | Sustainability | Energ
H-Index Metrics
-
H-Index24
-
i10 Index38
-
Citation Counts2,277
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* Total H Index Rankings
Rankings
651,922
World Rank
289
Country Rank
36
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
Environmental science | Analytical chemistry | Air pollution | SPME | MOF
Environmental science | Analytical chemistry | Air pollution | SPME | MOF
H-Index Metrics
-
H-Index16
-
i10 Index19
-
Citation Counts1,211
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* Total H Index Rankings
Rankings
909,553
World Rank
490
Country Rank
2
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
environmentel geology | economic geology | metallogen
environmentel geology | economic geology | metallogen
H-Index Metrics
-
H-Index12
-
i10 Index14
-
Citation Counts336
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* Total H Index Rankings
Rankings
1,411,106
World Rank
1,069
Country Rank
233
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
hydrology | ecology | climate change | ecological flo
hydrology | ecology | climate change | ecological flo
H-Index Metrics
-
H-Index7
-
i10 Index5
-
Citation Counts175
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* Total H Index Rankings
Rankings
1,477,384
World Rank
1,165
Country Rank
310
University
Ranking Based On Selection:
7
* Total H Index Rankings
Rankings
1,499,384
World Rank
1,187
Country Rank
5
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
1,691,045
World Rank
1,557
Country Rank
375
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
Energy efficient buildings | Phase change materials (PCM) | Flammability of PCM | Thermal Comfor
Energy efficient buildings | Phase change materials (PCM) | Flammability of PCM | Thermal Comfor
H-Index Metrics
-
H-Index5
-
i10 Index3
-
Citation Counts137
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* Total H Index Rankings
Rankings
1,700,134
World Rank
1,576
Country Rank
377
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Water/Wastewater Treatment | Membranes | Environmental Engineerin
Water/Wastewater Treatment | Membranes | Environmental Engineerin
H-Index Metrics
-
H-Index5
-
i10 Index3
-
Citation Counts99
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* Total H Index Rankings
Rankings
1,733,442
World Rank
1,664
Country Rank
391
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
Geotechnical engineering | Geomechanics | Ground support | Monitorin
Geotechnical engineering | Geomechanics | Ground support | Monitorin
H-Index Metrics
-
H-Index5
-
i10 Index2
-
Citation Counts65
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* Total H Index Rankings
Rankings
1,905,249
World Rank
2,154
Country Rank
458
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
air pollution | air pollution modeling | lung bioaccessibility | health risk assessment | sustainabilit
air pollution | air pollution modeling | lung bioaccessibility | health risk assessment | sustainabilit
H-Index Metrics
-
H-Index4
-
i10 Index2
-
Citation Counts61
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* Total H Index Rankings
Rankings
1,942,718
World Rank
2,272
Country Rank
475
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
Air Quality | Source Apportionmnet | Environmental Sciences at Nazarbayev Universit
Air Quality | Source Apportionmnet | Environmental Sciences at Nazarbayev Universit
H-Index Metrics
-
H-Index4
-
i10 Index1
-
Citation Counts42
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* Total H Index Rankings
Rankings
2,199,253
World Rank
3,353
Country Rank
229
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
Environmental Science | Waste treatment | Metallurgy | Thermodynamic modelling | Ecolog
Environmental Science | Waste treatment | Metallurgy | Thermodynamic modelling | Ecolog
H-Index Metrics
-
H-Index3
-
i10 Index1
-
Citation Counts35
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Premium Data
* Total H Index Rankings
Rankings
2,275,951
World Rank
3,790
Country Rank
708
University
Ranking Based On Selection:
15
* Total H Index Rankings
Rankings
2,296,778
World Rank
3,885
Country Rank
729
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
Supplementary cementitious materials | Industrial by-product | Geopolymer technology | Mineral carbonatio
Supplementary cementitious materials | Industrial by-product | Geopolymer technology | Mineral carbonatio
H-Index Metrics
-
H-Index2
-
i10 Index1
-
Citation Counts24
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* Total H Index Rankings
Rankings
2,317,399
World Rank
3,990
Country Rank
755
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Environmental Health | Air Pollution | Water Pollution | One Healt
Environmental Health | Air Pollution | Water Pollution | One Healt
H-Index Metrics
-
H-Index2
-
i10 Index1
-
Citation Counts17
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* Total H Index Rankings
Rankings
2,322,627
World Rank
4,019
Country Rank
581
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
water resources | water use | environmental engineerin
water resources | water use | environmental engineerin
H-Index Metrics
-
H-Index2
-
i10 Index1
-
Citation Counts15
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* Total H Index Rankings
Rankings
2,341,800
World Rank
4,155
Country Rank
1,109
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
2,512,960
World Rank
5,329
Country Rank
1,508
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
global environmental studies | japan studie
global environmental studies | japan studie
H-Index Metrics
-
H-Index1
-
i10 Index0
-
Citation Counts5
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Premium Data
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