Per Nygaard

4.4k total citations
86 papers, 2.5k citations indexed

About

Per Nygaard is a scholar working on Molecular Biology, Plant Science and Genetics. According to data from OpenAlex, Per Nygaard has authored 86 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Molecular Biology, 19 papers in Plant Science and 17 papers in Genetics. Recurrent topics in Per Nygaard's work include Biochemical and Molecular Research (38 papers), Bacterial Genetics and Biotechnology (16 papers) and Enzyme Structure and Function (12 papers). Per Nygaard is often cited by papers focused on Biochemical and Molecular Research (38 papers), Bacterial Genetics and Biotechnology (16 papers) and Enzyme Structure and Function (12 papers). Per Nygaard collaborates with scholars based in Denmark, Norway and United States. Per Nygaard's co-authors include Hans H. Saxild, Kaj Frank Jensen, Bjarne Hove‐Jensen, Karin Hammer‐Jespersen, Mogens Kilstrup, Bjarne Jochimsen, Agnete Munch‐Petersen, Anna Charlotte Schultz, Zengyi Chang and Rodney E. Kellems and has published in prestigious journals such as SHILAP Revista de lepidopterología, Biochemistry and Analytical Biochemistry.

In The Last Decade

Per Nygaard

82 papers receiving 2.3k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Per Nygaard Denmark 28 1.8k 678 351 340 296 86 2.5k
José G. Gavilanes Spain 36 2.5k 1.4× 461 0.7× 194 0.6× 173 0.5× 428 1.4× 194 4.5k
Hideo Yamagata Japan 37 2.2k 1.2× 999 1.5× 744 2.1× 341 1.0× 277 0.9× 115 3.6k
Reinout Amons Netherlands 34 2.0k 1.1× 385 0.6× 264 0.8× 175 0.5× 166 0.6× 69 3.0k
Jiřı́ Jonák Czechia 19 1.4k 0.8× 481 0.7× 235 0.7× 110 0.3× 158 0.5× 62 2.0k
E. Schiltz Germany 20 1.5k 0.8× 410 0.6× 282 0.8× 212 0.6× 222 0.8× 29 2.5k
Hiroshi Nyunoya Japan 28 1.2k 0.7× 159 0.2× 128 0.4× 329 1.0× 629 2.1× 69 2.3k
David Gillespie United States 31 2.8k 1.5× 1.1k 1.6× 549 1.6× 130 0.4× 552 1.9× 83 4.2k
Arul Marie France 34 834 0.5× 382 0.6× 425 1.2× 92 0.3× 126 0.4× 70 2.9k
Lucy E. J. Lee Canada 30 711 0.4× 349 0.5× 384 1.1× 154 0.5× 96 0.3× 88 3.2k
Niels Ole Kjeldgaard Denmark 26 2.3k 1.3× 1.3k 2.0× 563 1.6× 181 0.5× 175 0.6× 45 3.4k

Countries citing papers authored by Per Nygaard

Since Specialization
Citations

This map shows the geographic impact of Per Nygaard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Per Nygaard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Per Nygaard more than expected).

Fields of papers citing papers by Per Nygaard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Per Nygaard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Per Nygaard. The network helps show where Per Nygaard may publish in the future.

Co-authorship network of co-authors of Per Nygaard

This figure shows the co-authorship network connecting the top 25 collaborators of Per Nygaard. A scholar is included among the top collaborators of Per Nygaard based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Per Nygaard. Per Nygaard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Øyen, Bernt‐Håvard & Per Nygaard. (2020). Naturlig utbredelse av gran i Norge. Duo Research Archive (University of Oslo). 2 indexed citations
2.
Nygaard, Per & Bernt‐Håvard Øyen. (2020). Skoghistorisk tilbakeblikk med vekt på utviklingen av bestandsskogbruket i Norge. Duo Research Archive (University of Oslo). 1 indexed citations
3.
Alfredsen, Gry, Clara Antón‐Fernández, Rasmus Astrup, et al.. (2020). Klimakur 2030 – beskrivelse av utvalgte klimatiltak knyttet til skog. Duo Research Archive (University of Oslo). 2 indexed citations
4.
Astrup, Rasmus, Even Bergseng, Ryan M. Bright, et al.. (2019). Effekter av planting av skog på nye arealer. Betydning for klima, miljø og næring. Duo Research Archive (University of Oslo).
5.
Øyen, Bernt‐Håvard, Heidi Lie Andersen, Tor Myking, Per Nygaard, & Odd Egil Stabbetorp. (2009). Økologiske egenskaper for noen utvalgte introduserte bartreslag i Norge. Duo Research Archive (University of Oslo). 1 indexed citations
6.
Nygaard, Per & Inger Sundheim Fløistad. (2007). Foryngelse for et bærekraftig skogbruk. 1 indexed citations
7.
Nygaard, Per, et al.. (1999). Naturlig spredning av utenlandske treslag. BIBSYS Brage (BIBSYS (Norway)).
8.
Schuch, Raymond, et al.. (1999). Nucleosides as a carbon source in Bacillus subtilis: characterization of the drm–pupG operon. Microbiology. 145(10). 2957–2966. 30 indexed citations
9.
Schnorr, Kirk, et al.. (1996). A second form of adenine phosphoribosyltransferase in Arabidopsis thaliana with relative specificity towards cytokinins. The Plant Journal. 9(6). 891–898. 41 indexed citations
10.
Saxild, Hans H., et al.. (1995). Functional analysis of the Bacillus subtilis purT gene encoding formate-dependent glycinamide ribonucleotide transformylase. Microbiology. 141(9). 2211–2218. 19 indexed citations
11.
Saxild, Hans H., et al.. (1994). Genetic and physiological characterization of a formate-dependent 5′-phosphoribosyl-1-glycinamide transformylase activity in Bacillus subtilis. Molecular and General Genetics MGG. 242(4). 415–420. 6 indexed citations
12.
Schnorr, Kirk, Per Nygaard, & Michel Laloue. (1994). Molecular characterization of Arabidopsis thaliana cDNAs encoding three purine biosynthetic enzymes. The Plant Journal. 6(1). 113–121. 28 indexed citations
13.
Christensen, L., Vibeke Andersen, Per Nygaard, & Klaus Bendtzen. (1992). Effects of Immunomodulators on Ecto‐5′‐Nucleotidase Activity on Blood Mononuclear Cells In Vitro. Scandinavian Journal of Immunology. 35(4). 407–413. 12 indexed citations
14.
Kilstrup, Mogens, et al.. (1990). Autoregulation of PurR repressor synthesis and involvement of purR in the regulation of pur B, purC, purL, purMN and guaBA expression in Escherichia coli. European Journal of Biochemistry. 187(2). 373–379. 81 indexed citations
15.
Nygaard, Per, et al.. (1990). Identification of hypoxanthine and guanine as the co‐repressors for the purine regulon genes of Escherichia coli. Molecular Microbiology. 4(12). 2187–2192. 68 indexed citations
16.
Christensen, L., et al.. (1989). Low 5′ Nucleotidase Activity in Mononuclear Cells of Patients with Defect T-Cell Function. Advances in experimental medicine and biology. 253B. 135–139. 3 indexed citations
17.
Hove‐Jensen, Bjarne & Per Nygaard. (1989). Role of Guanosine Kinase in the Utilization of Guanosine for Nucleotide Synthesis in Escherichia coli. Microbiology. 135(5). 1263–1273. 24 indexed citations
18.
19.
Petersen, Michael B., et al.. (1987). New assignment of the adenosine deaminase gene locus to chromosome 20q13 X 11 by study of a patient with interstitial deletion 20q.. Journal of Medical Genetics. 24(2). 93–96. 44 indexed citations
20.
Mejer, Johannes, et al.. (1984). Purine Metabolizing Enzymes in Lymphocytes from Patients with Solid Tumors. Acta Medica Scandinavica. 215(1). 5–11. 9 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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