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World Scientist and University Rankings 2026
Denmark Engineering & Technology / Environmental Science & Engineering 107 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 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
5,502
World Rank
42
Country Rank
7
University
Ranking Based On Selection:
1
* Total H Index Rankings
Rankings
5,943
World Rank
44
Country Rank
15
University
Ranking Based On Selection:
2
Engineering & Technology / Environmental Science & Engineering
Air pollution | oxidative stress | inflammation | particle toxicology | environmental epidemiolog
Air pollution | oxidative stress | inflammation | particle toxicology | environmental epidemiolog
H-Index Metrics
-
H-Index117
-
i10 Index435
-
Citation Counts45,593
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* Total H Index Rankings
Rankings
18,523
World Rank
161
Country Rank
29
University
Ranking Based On Selection:
3
Engineering & Technology / Environmental Science & Engineering
Biogeochemistry | Arctic and boreal ecosystems | climate chang
Biogeochemistry | Arctic and boreal ecosystems | climate chang
H-Index Metrics
-
H-Index86
-
i10 Index191
-
Citation Counts27,723
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* Total H Index Rankings
Rankings
26,766
World Rank
244
Country Rank
76
University
Ranking Based On Selection:
4
* Total H Index Rankings
Rankings
27,681
World Rank
251
Country Rank
32
University
Ranking Based On Selection:
5
Engineering & Technology / Environmental Science & Engineering
environmental engineering | microbial ecology | environmental microbiolog
environmental engineering | microbial ecology | environmental microbiolog
H-Index Metrics
-
H-Index76
-
i10 Index226
-
Citation Counts19,786
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* Total H Index Rankings
Rankings
28,789
World Rank
263
Country Rank
54
University
Ranking Based On Selection:
6
Engineering & Technology / Environmental Science & Engineering
Air Pollution | Environmental Assessment | Air Quality Modellin
Air Pollution | Environmental Assessment | Air Quality Modellin
H-Index Metrics
-
H-Index75
-
i10 Index229
-
Citation Counts18,609
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* Total H Index Rankings
Rankings
30,311
World Rank
278
Country Rank
84
University
Ranking Based On Selection:
7
Engineering & Technology / Environmental Science & Engineering
Biogeochemistry | soil sciences | environmental impac
Biogeochemistry | soil sciences | environmental impac
H-Index Metrics
-
H-Index74
-
i10 Index231
-
Citation Counts22,834
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* Total H Index Rankings
Rankings
30,698
World Rank
283
Country Rank
86
University
Ranking Based On Selection:
8
Engineering & Technology / Environmental Science & Engineering
Regional climate | climate phenomena | climate chang
Regional climate | climate phenomena | climate chang
H-Index Metrics
-
H-Index74
-
i10 Index167
-
Citation Counts81,092
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* Total H Index Rankings
Rankings
32,120
World Rank
297
Country Rank
19
University
Ranking Based On Selection:
9
* Total H Index Rankings
Rankings
33,339
World Rank
304
Country Rank
40
University
Ranking Based On Selection:
10
Engineering & Technology / Environmental Science & Engineering
PFAS | ecotoxicology | chemicals | nanotechnolog
PFAS | ecotoxicology | chemicals | nanotechnolog
H-Index Metrics
-
H-Index72
-
i10 Index150
-
Citation Counts24,186
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* Total H Index Rankings
Rankings
36,365
World Rank
337
Country Rank
47
University
Ranking Based On Selection:
11
Engineering & Technology / Environmental Science & Engineering
Biogeochemistry | Ecophysiology | Global Climate Change | Carbon Sequestratio
Biogeochemistry | Ecophysiology | Global Climate Change | Carbon Sequestratio
H-Index Metrics
-
H-Index70
-
i10 Index161
-
Citation Counts39,717
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* Total H Index Rankings
Rankings
38,705
World Rank
366
Country Rank
54
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
43,550
World Rank
412
Country Rank
85
University
Ranking Based On Selection:
13
Engineering & Technology / Environmental Science & Engineering
Glacial microbiology | biogeochemistr
Glacial microbiology | biogeochemistr
H-Index Metrics
-
H-Index66
-
i10 Index121
-
Citation Counts11,569
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* Total H Index Rankings
Rankings
47,165
World Rank
444
Country Rank
68
University
Ranking Based On Selection:
14
Engineering & Technology / Environmental Science & Engineering
Waste management and resource recover
Waste management and resource recover
H-Index Metrics
-
H-Index64
-
i10 Index154
-
Citation Counts12,282
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* Total H Index Rankings
Rankings
48,506
World Rank
462
Country Rank
71
University
Ranking Based On Selection:
15
Engineering & Technology / Environmental Science & Engineering
Groundwater contamination | risk assessment | sustainable remediatio
Groundwater contamination | risk assessment | sustainable remediatio
H-Index Metrics
-
H-Index64
-
i10 Index149
-
Citation Counts16,030
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* Total H Index Rankings
Rankings
54,538
World Rank
525
Country Rank
85
University
Ranking Based On Selection:
16
Engineering & Technology / Environmental Science & Engineering
Wastewater treatment | Environmental chemistry | disinfection | ozonation | Water treatmen
Wastewater treatment | Environmental chemistry | disinfection | ozonation | Water treatmen
H-Index Metrics
-
H-Index61
-
i10 Index127
-
Citation Counts14,079
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* Total H Index Rankings
Rankings
62,319
World Rank
593
Country Rank
35
University
Ranking Based On Selection:
17
Engineering & Technology / Environmental Science & Engineering
Urban waters | wastewater collection systems | stormwater management systems | microplastic quantification | wastewater treatment t
Urban waters | wastewater collection systems | stormwater management systems | microplastic quantification | wastewater treatment t
H-Index Metrics
-
H-Index58
-
i10 Index166
-
Citation Counts13,777
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* Total H Index Rankings
Rankings
65,151
World Rank
621
Country Rank
135
University
Ranking Based On Selection:
18
Engineering & Technology / Environmental Science & Engineering
ventilation | indoor climate | air quality | air distributio
ventilation | indoor climate | air quality | air distributio
H-Index Metrics
-
H-Index57
-
i10 Index285
-
Citation Counts12,159
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* Total H Index Rankings
Rankings
67,251
World Rank
651
Country Rank
6
University
Ranking Based On Selection:
19
Engineering & Technology / Environmental Science & Engineering
Marine Biology | Oceanography | Zooplankton | Aquacultur
Marine Biology | Oceanography | Zooplankton | Aquacultur
H-Index Metrics
-
H-Index57
-
i10 Index171
-
Citation Counts12,146
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* Total H Index Rankings
Rankings
68,091
World Rank
655
Country Rank
142
University
Ranking Based On Selection:
20
Engineering & Technology / Environmental Science & Engineering
PFAS | Environmental Chemistry | Advanced Oxidation Process | Sonochemistr
PFAS | Environmental Chemistry | Advanced Oxidation Process | Sonochemistr
H-Index Metrics
-
H-Index56
-
i10 Index99
-
Citation Counts9,805
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* Total H Index Rankings
Rankings
71,591
World Rank
692
Country Rank
188
University
Ranking Based On Selection:
21
Engineering & Technology / Environmental Science & Engineering
Environmental Epidemiology | Biostatistics | Climate Change | Air pollution | Public Healt
Environmental Epidemiology | Biostatistics | Climate Change | Air pollution | Public Healt
H-Index Metrics
-
H-Index55
-
i10 Index159
-
Citation Counts8,828
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* Total H Index Rankings
Rankings
75,677
World Rank
727
Country Rank
156
University
Ranking Based On Selection:
22
Engineering & Technology / Environmental Science & Engineering
sustainable development | engineered ecosystem services | circular resource economy | climate neutral production systems | risk cyc
sustainable development | engineered ecosystem services | circular resource economy | climate neutral production systems | risk cyc
H-Index Metrics
-
H-Index54
-
i10 Index144
-
Citation Counts11,382
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* Total H Index Rankings
Rankings
77,755
World Rank
741
Country Rank
8
University
Ranking Based On Selection:
23
Engineering & Technology / Environmental Science & Engineering
Blue Carbon | Climate change effects | Kelp forest ecology | Coastal eutrophication | Seaweed & Seagrass Ecophysiology
Blue Carbon | Climate change effects | Kelp forest ecology | Coastal eutrophication | Seaweed & Seagrass Ecophysiology
H-Index Metrics
-
H-Index54
-
i10 Index77
-
Citation Counts8,475
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* Total H Index Rankings
Rankings
79,031
World Rank
751
Country Rank
125
University
Ranking Based On Selection:
24
Engineering & Technology / Environmental Science & Engineering
Life cycle assessment | carbon footprint | SDG performances | Environmental sustainability assessmen
Life cycle assessment | carbon footprint | SDG performances | Environmental sustainability assessmen
H-Index Metrics
-
H-Index53
-
i10 Index100
-
Citation Counts11,752
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* Total H Index Rankings
Rankings
80,100
World Rank
761
Country Rank
127
University
Ranking Based On Selection:
25
Engineering & Technology / Environmental Science & Engineering
Risk assessment | regulation and risk governance of nanomaterials and emerging risk
Risk assessment | regulation and risk governance of nanomaterials and emerging risk
H-Index Metrics
-
H-Index53
-
i10 Index122
-
Citation Counts8,738
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