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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 03, 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
96,827
World Rank
15
Country Rank
3
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Water treatment | Air purification | Resource recovery | Bioenergy | Sensor
Water treatment | Air purification | Resource recovery | Bioenergy | Sensor
H-Index Metrics
-
H-Index49
-
i10 Index129
-
Citation Counts7,734
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* Total H Index Rankings
Rankings
114,444
World Rank
19
Country Rank
4
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Environmental Decision Making | Process Integration | Process Systems Engineering | Life Cycle Assessment | Renewable Energy System
Environmental Decision Making | Process Integration | Process Systems Engineering | Life Cycle Assessment | Renewable Energy System
H-Index Metrics
-
H-Index46
-
i10 Index156
-
Citation Counts6,865
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* Total H Index Rankings
Rankings
194,416
World Rank
46
Country Rank
10
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Decision and Risk analysis | Geopolymer and Advanced Materials Engineering Research for Sustainability | Environment and Energy |
Decision and Risk analysis | Geopolymer and Advanced Materials Engineering Research for Sustainability | Environment and Energy |
H-Index Metrics
-
H-Index36
-
i10 Index116
-
Citation Counts5,315
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* Total H Index Rankings
Rankings
267,485
World Rank
77
Country Rank
18
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Carbon dioxide capture | chemical thermodynamics | engineering thermodynamics | process simulation | property correlation developme
Carbon dioxide capture | chemical thermodynamics | engineering thermodynamics | process simulation | property correlation developme
H-Index Metrics
-
H-Index31
-
i10 Index45
-
Citation Counts2,789
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* Total H Index Rankings
Rankings
333,666
World Rank
108
Country Rank
2
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Thermodynamics | Biosorption | Biomass Energy | Membrane Applications | Plastics Separatio
Thermodynamics | Biosorption | Biomass Energy | Membrane Applications | Plastics Separatio
H-Index Metrics
-
H-Index27
-
i10 Index42
-
Citation Counts2,301
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* Total H Index Rankings
Rankings
378,968
World Rank
139
Country Rank
25
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
381,846
World Rank
146
Country Rank
28
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Biodiesel | life cycle assessment | chemical reactor dynamic
Biodiesel | life cycle assessment | chemical reactor dynamic
H-Index Metrics
-
H-Index25
-
i10 Index46
-
Citation Counts3,305
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* Total H Index Rankings
Rankings
390,863
World Rank
158
Country Rank
30
University
Ranking Based On Selection:
8
Engineering & Technology / Chemical Engineering
Chemical Engineering | Desulfurization | Adsorption | Response Surface Methodology | Fuzzy optimizatio
Chemical Engineering | Desulfurization | Adsorption | Response Surface Methodology | Fuzzy optimizatio
H-Index Metrics
-
H-Index24
-
i10 Index39
-
Citation Counts1,559
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* Total H Index Rankings
Rankings
585,854
World Rank
338
Country Rank
75
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
bioethanol | consolidated bioprocessing | solvothermal liquefaction | hydrothermal liquefaction | photocatalytic and electrocatalyt
bioethanol | consolidated bioprocessing | solvothermal liquefaction | hydrothermal liquefaction | photocatalytic and electrocatalyt
H-Index Metrics
-
H-Index18
-
i10 Index24
-
Citation Counts1,388
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* Total H Index Rankings
Rankings
613,602
World Rank
380
Country Rank
12
University
Ranking Based On Selection:
10
Engineering & Technology / Chemical Engineering
Supercritical Fluid EngineeringTechnology | Supercritical Fluid Extraction | Drug Discover
Supercritical Fluid EngineeringTechnology | Supercritical Fluid Extraction | Drug Discover
H-Index Metrics
-
H-Index17
-
i10 Index23
-
Citation Counts3,800
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* Total H Index Rankings
Rankings
622,215
World Rank
389
Country Rank
53
University
Ranking Based On Selection:
11
* Total H Index Rankings
Rankings
625,019
World Rank
394
Country Rank
54
University
Ranking Based On Selection:
12
Engineering & Technology / Chemical Engineering
membrane separation | wastewater treatment | carbon sequestration | eletrolysis of seawater | mine waste utilization and treatmen
membrane separation | wastewater treatment | carbon sequestration | eletrolysis of seawater | mine waste utilization and treatmen
H-Index Metrics
-
H-Index17
-
i10 Index26
-
Citation Counts1,174
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* Total H Index Rankings
Rankings
654,609
World Rank
428
Country Rank
57
University
Ranking Based On Selection:
13
Engineering & Technology / Chemical Engineering
water treatment | wastewater treatment | acid mine drainag
water treatment | wastewater treatment | acid mine drainag
H-Index Metrics
-
H-Index16
-
i10 Index25
-
Citation Counts1,076
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* Total H Index Rankings
Rankings
690,061
World Rank
475
Country Rank
64
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
Process Systems Engineering | Biochemical Engineering | Wastewater treatment | Nanotechnology | Biofuels and Renewable Energ
Process Systems Engineering | Biochemical Engineering | Wastewater treatment | Nanotechnology | Biofuels and Renewable Energ
H-Index Metrics
-
H-Index16
-
i10 Index16
-
Citation Counts1,334
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* Total H Index Rankings
Rankings
690,830
World Rank
476
Country Rank
65
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Supercritical Extraction | Water and Wastewater Treatment Technology | Hazardous WAste Treatmen
Supercritical Extraction | Water and Wastewater Treatment Technology | Hazardous WAste Treatmen
H-Index Metrics
-
H-Index16
-
i10 Index18
-
Citation Counts591
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* Total H Index Rankings
Rankings
725,706
World Rank
536
Country Rank
68
University
Ranking Based On Selection:
16
Engineering & Technology / Chemical Engineering
Water and Wastewater | Environmental Engineering | Pollution Remediation | Phytoremediatio
Water and Wastewater | Environmental Engineering | Pollution Remediation | Phytoremediatio
H-Index Metrics
-
H-Index15
-
i10 Index19
-
Citation Counts719
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* Total H Index Rankings
Rankings
773,543
World Rank
616
Country Rank
167
University
Ranking Based On Selection:
17
* Total H Index Rankings
Rankings
800,533
World Rank
659
Country Rank
179
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
862,632
World Rank
744
Country Rank
11
University
Ranking Based On Selection:
19
* Total H Index Rankings
Rankings
865,281
World Rank
748
Country Rank
197
University
Ranking Based On Selection:
20
Engineering & Technology / Chemical Engineering
Electrochemical engineering | Batteries | Fuel Cells | Energy Storag
Electrochemical engineering | Batteries | Fuel Cells | Energy Storag
H-Index Metrics
-
H-Index12
-
i10 Index13
-
Citation Counts478
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* Total H Index Rankings
Rankings
892,140
World Rank
794
Country Rank
93
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
925,798
World Rank
847
Country Rank
2
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
1,000,119
World Rank
987
Country Rank
2
University
Ranking Based On Selection:
23
Engineering & Technology / Chemical Engineering
Chemical Engineering | Catalysis | Supercritical Fluid
Chemical Engineering | Catalysis | Supercritical Fluid
H-Index Metrics
-
H-Index10
-
i10 Index12
-
Citation Counts306
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* Total H Index Rankings
Rankings
1,098,783
World Rank
1,167
Country Rank
15
University
Ranking Based On Selection:
24
Engineering & Technology / Chemical Engineering
Chemical Engineering | Enzyme Technology | Bioactive Compound
Chemical Engineering | Enzyme Technology | Bioactive Compound
H-Index Metrics
-
H-Index9
-
i10 Index9
-
Citation Counts382
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* Total H Index Rankings
Rankings
1,111,880
World Rank
1,201
Country Rank
328
University
Ranking Based On Selection:
25
Engineering & Technology / Chemical Engineering
Chemical Engineering | Organic Synthesis | Nanotechnology | Green Chemistry | Environmental Engineerin
Chemical Engineering | Organic Synthesis | Nanotechnology | Green Chemistry | Environmental Engineerin
H-Index Metrics
-
H-Index9
-
i10 Index9
-
Citation Counts236
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Premium Data
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