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University, Subject, Country, Region, World
New Zealand 23 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 05, 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 (1.131.911) 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
12,482
World Rank
25
Country Rank
2
University
Ranking Based On Selection:
1
Engineering & Technology / Chemical Engineering
Biochemical Engineering | Bioprocess Engineering | Algal Biotechnology | Fermentation Technolog
Biochemical Engineering | Bioprocess Engineering | Algal Biotechnology | Fermentation Technolog
H-Index Metrics
-
H-Index96
-
i10 Index312
-
Citation Counts61,058
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* Total H Index Rankings
Rankings
83,142
World Rank
376
Country Rank
119
University
Ranking Based On Selection:
2
Engineering & Technology / Chemical Engineering
Chemical Engineering | Sustainability | Circular Economy | Waste MinimisaBiofuels | Wastewater treatmen
Chemical Engineering | Sustainability | Circular Economy | Waste MinimisaBiofuels | Wastewater treatmen
H-Index Metrics
-
H-Index52
-
i10 Index119
-
Citation Counts9,943
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* Total H Index Rankings
Rankings
122,226
World Rank
609
Country Rank
46
University
Ranking Based On Selection:
3
Engineering & Technology / Chemical Engineering
Biochemistry | Biomolecular Interactions | Enzymes | Enzyme Evolution | Enzyme Engineerin
Biochemistry | Biomolecular Interactions | Enzymes | Enzyme Evolution | Enzyme Engineerin
H-Index Metrics
-
H-Index45
-
i10 Index119
-
Citation Counts20,182
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* Total H Index Rankings
Rankings
231,467
World Rank
1,285
Country Rank
68
University
Ranking Based On Selection:
4
Engineering & Technology / Chemical Engineering
Energy | Process Integration | Heat Pumps | Digital Twin
Energy | Process Integration | Heat Pumps | Digital Twin
H-Index Metrics
-
H-Index33
-
i10 Index83
-
Citation Counts4,272
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* Total H Index Rankings
Rankings
231,467
World Rank
1,285
Country Rank
68
University
Ranking Based On Selection:
5
Engineering & Technology / Chemical Engineering
Energy | Process Integration | Heat Pumps | Digital Twin
Energy | Process Integration | Heat Pumps | Digital Twin
H-Index Metrics
-
H-Index33
-
i10 Index83
-
Citation Counts4,272
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* Total H Index Rankings
Rankings
265,268
World Rank
1,497
Country Rank
109
University
Ranking Based On Selection:
6
* Total H Index Rankings
Rankings
276,433
World Rank
1,568
Country Rank
85
University
Ranking Based On Selection:
7
Engineering & Technology / Chemical Engineering
Chemical Engineering | Process Integration | Pinch Analysis | Bioenerg
Chemical Engineering | Process Integration | Pinch Analysis | Bioenerg
H-Index Metrics
-
H-Index30
-
i10 Index70
-
Citation Counts2,792
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* Total H Index Rankings
Rankings
295,840
World Rank
1,666
Country Rank
425
University
Ranking Based On Selection:
8
* Total H Index Rankings
Rankings
335,833
World Rank
1,881
Country Rank
466
University
Ranking Based On Selection:
9
Engineering & Technology / Chemical Engineering
Environmental Biotechnology | Environmental Microbiology | Environmental Engineerin
Environmental Biotechnology | Environmental Microbiology | Environmental Engineerin
H-Index Metrics
-
H-Index27
-
i10 Index34
-
Citation Counts2,778
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* Total H Index Rankings
Rankings
336,617
World Rank
1,886
Country Rank
181
University
Ranking Based On Selection:
10
* Total H Index Rankings
Rankings
434,919
World Rank
2,456
Country Rank
180
University
Ranking Based On Selection:
11
Engineering & Technology / Chemical Engineering
Chemical engineering | dairy | evaporation | ultrafiltration | reverse osmosi
Chemical engineering | dairy | evaporation | ultrafiltration | reverse osmosi
H-Index Metrics
-
H-Index23
-
i10 Index34
-
Citation Counts1,722
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* Total H Index Rankings
Rankings
553,204
World Rank
3,080
Country Rank
322
University
Ranking Based On Selection:
12
* Total H Index Rankings
Rankings
603,789
World Rank
3,311
Country Rank
241
University
Ranking Based On Selection:
13
* Total H Index Rankings
Rankings
617,580
World Rank
3,358
Country Rank
247
University
Ranking Based On Selection:
14
Engineering & Technology / Chemical Engineering
Decarbonizing heavy industry | high temperature processes | numerical modelling | tree syru
Decarbonizing heavy industry | high temperature processes | numerical modelling | tree syru
H-Index Metrics
-
H-Index17
-
i10 Index32
-
Citation Counts1,040
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* Total H Index Rankings
Rankings
772,980
World Rank
3,960
Country Rank
875
University
Ranking Based On Selection:
15
Engineering & Technology / Chemical Engineering
Chemical Engineering | Higher Education | Thermal Energy Storage | Non-Thermal Food Processin
Chemical Engineering | Higher Education | Thermal Energy Storage | Non-Thermal Food Processin
H-Index Metrics
-
H-Index14
-
i10 Index16
-
Citation Counts6,508
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* Total H Index Rankings
Rankings
842,124
World Rank
4,178
Country Rank
227
University
Ranking Based On Selection:
16
* Total H Index Rankings
Rankings
1,079,124
World Rank
4,779
Country Rank
492
University
Ranking Based On Selection:
17
Engineering & Technology / Chemical Engineering
Chemical engineering | Powder technology | Powder flowability | Solid-state Fermentatio
Chemical engineering | Powder technology | Powder flowability | Solid-state Fermentatio
H-Index Metrics
-
H-Index10
-
i10 Index10
-
Citation Counts328
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Premium Data
* Total H Index Rankings
Rankings
1,188,480
World Rank
5,012
Country Rank
409
University
Ranking Based On Selection:
18
* Total H Index Rankings
Rankings
1,201,047
World Rank
5,031
Country Rank
126
University
Ranking Based On Selection:
19
Engineering & Technology / Chemical Engineering
Algal Biotechnology | Water Quality | CO2 Capture | Algal Bioremediation | Nutrient Recovery and Reus
Algal Biotechnology | Water Quality | CO2 Capture | Algal Bioremediation | Nutrient Recovery and Reus
H-Index Metrics
-
H-Index8
-
i10 Index8
-
Citation Counts333
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Premium Data
* Total H Index Rankings
Rankings
1,355,662
World Rank
5,299
Country Rank
444
University
Ranking Based On Selection:
20
* Total H Index Rankings
Rankings
1,973,993
World Rank
6,257
Country Rank
675
University
Ranking Based On Selection:
21
* Total H Index Rankings
Rankings
2,171,089
World Rank
6,566
Country Rank
596
University
Ranking Based On Selection:
22
* Total H Index Rankings
Rankings
2,462,337
World Rank
7,001
Country Rank
795
University
Ranking Based On Selection:
23
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