Login
Pricing & Plans
Citation Rankings
Smart Institutional Excellence Plan
World Scientist and University Rankings 2026
World Engineering & Technology 19.629 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 01, 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 (1.131.755) 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
496
World Rank
166
Country Rank
3
University
Ranking Based On Selection:
1
Engineering & Technology / Environmental Science & Engineering
environmental engineering | membrane separations | environmental nanotechnology | desalination | wate
environmental engineering | membrane separations | environmental nanotechnology | desalination | wate
H-Index Metrics
-
H-Index219
-
i10 Index589
-
Citation Counts173,864
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
893
World Rank
60
Country Rank
1
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Global change | soils | carbon | climate change | mitigatio
Global change | soils | carbon | climate change | mitigatio
H-Index Metrics
-
H-Index189
-
i10 Index876
-
Citation Counts153,119
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
974
World Rank
74
Country Rank
1
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Polymer nanocomposites | Conducting Polymers | Sustainability | Environmental Engineering | Electronic
Polymer nanocomposites | Conducting Polymers | Sustainability | Environmental Engineering | Electronic
H-Index Metrics
-
H-Index184
-
i10 Index1,050
-
Citation Counts115,982
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,039
World Rank
389
Country Rank
13
University
Ranking Based On Selection:
4
Engineering & Technology / Environmental Science & Engineering
biogeochemistry | ecology | environmental science | climate change | ecohydrolog
biogeochemistry | ecology | environmental science | climate change | ecohydrolog
H-Index Metrics
-
H-Index181
-
i10 Index517
-
Citation Counts184,784
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,125
World Rank
26
Country Rank
1
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
Environmental Soil Science & Biogeochemistr
Environmental Soil Science & Biogeochemistr
H-Index Metrics
-
H-Index177
-
i10 Index809
-
Citation Counts112,290
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,173
World Rank
91
Country Rank
1
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
Climate | Climate Change | Paleoclimat
Climate | Climate Change | Paleoclimat
H-Index Metrics
-
H-Index175
-
i10 Index592
-
Citation Counts172,499
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,197
World Rank
465
Country Rank
1
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Microbial fuel cells | microbial electrolysis cells | thermal batteries | desalination | water electrolyzer
Microbial fuel cells | microbial electrolysis cells | thermal batteries | desalination | water electrolyzer
H-Index Metrics
-
H-Index174
-
i10 Index558
-
Citation Counts127,717
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,262
World Rank
24
Country Rank
1
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
integrated assessment | climate change | environmental science | global change | sustainable developmen
integrated assessment | climate change | environmental science | global change | sustainable developmen
H-Index Metrics
-
H-Index171
-
i10 Index606
-
Citation Counts207,240
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,303
World Rank
511
Country Rank
20
University
Ranking Based On Selection:
9
Engineering & Technology / Environmental Science & Engineering
climate change | ecology | carbon cycle | leaf nitroge
climate change | ecology | carbon cycle | leaf nitroge
H-Index Metrics
-
H-Index170
-
i10 Index394
-
Citation Counts176,453
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,447
World Rank
582
Country Rank
6
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
Environmental & soil chemistry | adsorption | nanoparticles | microplastics | food safet
Environmental & soil chemistry | adsorption | nanoparticles | microplastics | food safet
H-Index Metrics
-
H-Index165
-
i10 Index954
-
Citation Counts115,465
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,667
World Rank
54
Country Rank
6
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
air pollution | environmental health | environmental epidemiology | built environmen
air pollution | environmental health | environmental epidemiology | built environmen
H-Index Metrics
-
H-Index159
-
i10 Index472
-
Citation Counts204,113
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
1,735
World Rank
141
Country Rank
1
University
Ranking Based On Selection:
12
Engineering & Technology / Environmental Science & Engineering
Environmental behaviour and effects of organic contaminants | passive sampling technique
Environmental behaviour and effects of organic contaminants | passive sampling technique
H-Index Metrics
-
H-Index158
-
i10 Index862
-
Citation Counts99,490
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,039
World Rank
174
Country Rank
2
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
2,119
World Rank
39
Country Rank
8
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
climate change | land-climate dynamics | climate extreme
climate change | land-climate dynamics | climate extreme
H-Index Metrics
-
H-Index150
-
i10 Index363
-
Citation Counts115,403
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,136
World Rank
64
Country Rank
1
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
environmental science | pollution | risk and remediatio
environmental science | pollution | risk and remediatio
H-Index Metrics
-
H-Index150
-
i10 Index967
-
Citation Counts95,469
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,138
World Rank
44
Country Rank
6
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
land use change | global environmental change | geography | land use | land cove
land use change | global environmental change | geography | land use | land cove
H-Index Metrics
-
H-Index150
-
i10 Index482
-
Citation Counts77,590
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,184
World Rank
6
Country Rank
1
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Chemistry | Environmental Engineering | Green Chemistry | Chemical Engineering | Water Treatmen
Chemistry | Environmental Engineering | Green Chemistry | Chemical Engineering | Water Treatmen
H-Index Metrics
-
H-Index149
-
i10 Index1,114
-
Citation Counts108,276
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,185
World Rank
70
Country Rank
2
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
Water Treatment Processes | Environmental Nanotechnology | Advanced Oxidation | Membrane Technolog
Water Treatment Processes | Environmental Nanotechnology | Advanced Oxidation | Membrane Technolog
H-Index Metrics
-
H-Index149
-
i10 Index896
-
Citation Counts83,922
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,505
World Rank
1,068
Country Rank
8
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
2,851
World Rank
92
Country Rank
3
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
2,879
World Rank
4
Country Rank
3
University
Ranking Based On Selection:
21
Engineering & Technology / Environmental Science & Engineering
Water Treatment | Waste to Value-added Product
Water Treatment | Waste to Value-added Product
H-Index Metrics
-
H-Index140
-
i10 Index567
-
Citation Counts104,009
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,892
World Rank
94
Country Rank
11
University
Ranking Based On Selection:
22
Engineering & Technology / Environmental Science & Engineering
Climate change | Tropical marine biology | Coral reef
Climate change | Tropical marine biology | Coral reef
H-Index Metrics
-
H-Index140
-
i10 Index400
-
Citation Counts113,050
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
2,970
World Rank
255
Country Rank
1
University
Ranking Based On Selection:
23
* Total H Index Rankings
Rankings
3,254
World Rank
1,421
Country Rank
16
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
environmental chemistry | atmospheric chemistry | environmental engineerin
environmental chemistry | atmospheric chemistry | environmental engineerin
H-Index Metrics
-
H-Index136
-
i10 Index443
-
Citation Counts87,948
Get Full Access to
Premium Data
* Total H Index Rankings
Rankings
3,336
World Rank
1,454
Country Rank
7
University
Ranking Based On Selection:
25
Engineering & Technology / Environmental Science & Engineering
Oceanography | Biogeochemistry | Marine Ecosystems | Climate | Carbon Cycl
Oceanography | Biogeochemistry | Marine Ecosystems | Climate | Carbon Cycl
H-Index Metrics
-
H-Index135
-
i10 Index393
-
Citation Counts98,754
Get Full Access to
Premium Data
Unify strategy, analytics, and growth in one powerful platform. Turn academic data into actionable strategy for sustainable excellence.
Track your performance in real time — benchmark, compare, and improve. Stay ahead with instant insights and global peer comparisons.
Attract world-class talent across 211 disciplines. Find, connect, and recruit the brightest minds worldwide.
Unlock researcher and institutional impact with transparent contribution scores. Recognize, measure, and reward academic excellence at every level.
Ensuring quality standards and accreditation compliance in higher education.
Advancing global partnerships, mobility, and international visibility.
🌍 Be Our Partner: Representation & Collaboration
Represent AD Scientific Index in your country or region — and grow with us.
- ✅ Official recognition as a regional partner
- ✅ Visibility partnership with full brand support
- ✅ Help institutions in your region enhance their academic visibility
- ✅ Contribute to value-driven projects with measurable academic impact
Limited Opportunities Available
