The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Per Halkjær Nielsen sits on this spectrum.
This scientist: 571 publications — 97th percentile
97% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 1,028 publications or more.
The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Per Halkjær Nielsen sits on this spectrum.
This scientist: 119 D-Index — 97th percentile
97% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 167 D-Index or more.
Per Halkjær Nielsen is affiliated with Aalborg University in Denmark and has a significant body of research focused on environmental science. Their extensive publication record reflects substantial work in pollution, ecology, molecular biology, environmental engineering, and health, toxicology, and mutagenesis.
Their main research topics include:
Prominent recent publications by Nielsen include:
Frequent co-authors collaborating with Nielsen are:
Their work has appeared repeatedly in key publication venues within their field, including:
Nielsen is also credited with contributions to books, notably with a publication titled "How a Water/Wastewater Utility Has Successfully Incorporated the UN Sustainable Development Goals in Their Daily Operations," published by the Water Environment Federation in 2020.
Bo Frølund;Rikke Palmgren;Kristian Keiding;Per Halkjær Nielsen
Holger Daims;Elena V. Lebedeva;Petra Pjevac;Ping Han
Maartje A. H. J. van Kessel;Daan R. Speth;Mads Albertsen;Per Halkjær Nielsen
B. Frølund;T. Griebe;P. H. Nielsen
Mads Albertsen;Philip Hugenholtz;Adam Skarshewski;Kåre Lehmann Nielsen
Holger Daims;Jeppe L. Nielsen;Per H. Nielsen;Karl-Heinz Schleifer
Natuscka Lee;Per Halkjær Nielsen;Kjær Holm Andreasen;Stefan Juretschko
Linwei Wu;Daliang Ning;Bing Zhang;Yong Li
Kamma Raunkjær;Thorkild Hvitved-Jacobsen;Per Halkjær Nielsen
Aaron Marc Saunders;Mads Albertsen;Jes Vollertsen;Per Halkjær Nielsen
Robert Seviour;Per Halkjær Nielsen
Mads Albertsen;Søren Michael Karst;Anja Sloth Ziegler;Rasmus Hansen Kirkegaard
Whonchee Lee;Zbigniew Lewandowski;P. H. Nielsen;W. A. Hamilton
Hanna Koch;Sebastian Lücker;Mads Albertsen;Katharina Kitzinger
Eva Gilbert;Shelesh Agrawal;Søren Michael Karst;Harald Horn
Per Halkjær Nielsen;Andreas Jahn;Rikke Palmgren
Poul Larsen;Jeppe Lund Nielsen;Morten Simonsen Dueholm;Ronald Wetzel
Yunhong Kong;Jeppe Lund Nielsen;Per Halkjær Nielsen
Jo De Vrieze;Aaron Marc Saunders;Ying He;Jing Fang
Mads Albertsen;Søren Michael Karst;Anja Sloth Ziegler;Kåre Lehmann Nielsen
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