Jan Raa

2.9k total citations
66 papers, 2.3k citations indexed

About

Jan Raa is a scholar working on Plant Science, Molecular Biology and Aquatic Science. According to data from OpenAlex, Jan Raa has authored 66 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Plant Science, 17 papers in Molecular Biology and 10 papers in Aquatic Science. Recurrent topics in Jan Raa's work include Aquaculture disease management and microbiota (10 papers), Aquaculture Nutrition and Growth (9 papers) and Fungal Plant Pathogen Control (7 papers). Jan Raa is often cited by papers focused on Aquaculture disease management and microbiota (10 papers), Aquaculture Nutrition and Growth (9 papers) and Fungal Plant Pathogen Control (7 papers). Jan Raa collaborates with scholars based in Norway, Canada and Australia. Jan Raa's co-authors include Asbjørn Gildberg, Knut Hjelmeland, Rolf Einar Engstad, Børre Robertsen, June Olley, Mark R. Christie, Arnold Berstad, Jørgen Valeur, Marit Espe and Leif Rein Njaa and has published in prestigious journals such as Applied and Environmental Microbiology, Food Chemistry and Journal of Nutrition.

In The Last Decade

Jan Raa

63 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Jan Raa Norway 27 966 946 693 347 344 66 2.3k
Takeshi Kobayashi Japan 21 875 0.9× 985 1.0× 543 0.8× 137 0.4× 204 0.6× 62 1.9k
Gary E. Rodrick United States 23 199 0.2× 609 0.6× 517 0.7× 181 0.5× 173 0.5× 63 1.8k
Galina Jeney Hungary 30 1.7k 1.8× 2.2k 2.4× 415 0.6× 313 0.9× 162 0.5× 59 3.3k
J. M. Shewan United Kingdom 22 231 0.2× 406 0.4× 751 1.1× 216 0.6× 494 1.4× 56 1.9k
Suxu He China 26 1.1k 1.2× 1.5k 1.6× 532 0.8× 63 0.2× 160 0.5× 39 1.9k
Masashi Maita Japan 26 1.4k 1.4× 1.3k 1.4× 260 0.4× 103 0.3× 204 0.6× 102 2.3k
Aihua Li China 27 472 0.5× 1.2k 1.3× 725 1.0× 335 1.0× 62 0.2× 98 2.4k
Francisco A. Guardiola Spain 33 1.8k 1.9× 2.5k 2.6× 456 0.7× 182 0.5× 179 0.5× 110 3.7k
Douglas P. Anderson United States 17 1.7k 1.7× 2.0k 2.2× 243 0.4× 144 0.4× 118 0.3× 27 2.4k
Roshada Hashim Malaysia 27 1.8k 1.8× 1.1k 1.2× 266 0.4× 112 0.3× 146 0.4× 72 2.3k

Countries citing papers authored by Jan Raa

Since Specialization
Citations

This map shows the geographic impact of Jan Raa'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 Jan Raa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Jan Raa more than expected).

Fields of papers citing papers by Jan Raa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jan Raa. 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 Jan Raa. The network helps show where Jan Raa may publish in the future.

Co-authorship network of co-authors of Jan Raa

This figure shows the co-authorship network connecting the top 25 collaborators of Jan Raa. A scholar is included among the top collaborators of Jan Raa 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 Jan Raa. Jan Raa 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.
Berstad, Arnold, Jan Raa, Tore Midtvedt, & Jørgen Valeur. (2016). Probiotic lactic acid bacteria – the fledgling cuckoos of the gut?. Microbial Ecology in Health and Disease. 27(0). 31557–31557. 15 indexed citations
2.
Berstad, Arnold, Jan Raa, & Jørgen Valeur. (2015). Indole – the scent of a healthy ‘inner soil’. Microbial Ecology in Health and Disease. 26(0). 27997–27997. 31 indexed citations
3.
Raa, Jan. (2015). Immune modulation by non-digestible and non-absorbable beta-1,3/1,6-glucan. Microbial Ecology in Health and Disease. 26(0). 27824–27824. 41 indexed citations
4.
Berstad, Arnold, Jan Raa, & Jørgen Valeur. (2014). Tryptophan: ‘essential’ for the pathogenesis of irritable bowel syndrome?. Scandinavian Journal of Gastroenterology. 49(12). 1493–1498. 27 indexed citations
5.
Höper, Anje Christina, Ahmed M. Khalid, Anne D. Hafstad, et al.. (2013). Oil from the marine zooplanktonCalanus finmarchicusimproves the cardiometabolic phenotype of diet-induced obese mice. British Journal Of Nutrition. 110(12). 2186–2193. 33 indexed citations
6.
Höper, Anje Christina, Anne D. Hafstad, Jim Lund, et al.. (2013). Wax Esters from the Marine Copepod Calanus finmarchicus Reduce Diet-Induced Obesity and Obesity-Related Metabolic Disorders in Mice. Journal of Nutrition. 144(2). 164–169. 33 indexed citations
7.
Raa, Jan. (2000). The use of immune-stimulants in fish and shellfish feeds. 77 indexed citations
8.
Raa, Jan, et al.. (2000). 10.1016/0967-0653(96)80400-u. Time to knit. 3(1). 115–119. 26 indexed citations
9.
Raa, Jan. (1992). The use of immunostimulants to increase resistance of aquatic organism to microbial infections. Medical Entomology and Zoology. 39–50. 130 indexed citations
10.
Bjelland, Svein, G Volden, & Jan Raa. (1988). A simple assay for determining keratin and collagen degradation in vitro. Archives of Dermatological Research. 280(1). 50–53. 4 indexed citations
11.
Kavli, G, et al.. (1983). Extraction, separation, quantification and evaluation of the phototoxic potency of furocoumarins in different parts of Heracleum laciniatum. Photobiochemistry and photobiophysics.. 5(3). 159–168. 6 indexed citations
12.
Jönsson, S., et al.. (1983). Amino Acid Degradation by a Lactobacillus plantarum Strain from Fish. Systematic and Applied Microbiology. 4(1). 148–154. 45 indexed citations
13.
Hjelmeland, Knut, Mark R. Christie, & Jan Raa. (1983). Skin mucus protease from rainbow trout, Salmo gairdneri Richardson, and its biological significance. Journal of Fish Biology. 23(1). 13–22. 152 indexed citations
14.
Kavli, G, G Volden, & Jan Raa. (1982). Accidental induction of photocontact allergy to Heracleum laciniatum. Acta Dermato Venereologica. 62(5). 435–438. 6 indexed citations
15.
Hjelmeland, Knut & Jan Raa. (1982). Characteristics of two trypsin type isozymes isolated from the Arctic fish capelin (Mallotus villosus). Comparative Biochemistry and Physiology Part B Comparative Biochemistry. 71(4). 557–562. 76 indexed citations
16.
Egidius, Emmy, et al.. (1981). Bath-vaccination against vibriosis. Duo Research Archive (University of Oslo). 4 indexed citations
17.
18.
Tronsmo, Anne Marte & Jan Raa. (1977). Cytology and Biochemistry of Pathogenic Growth of Botrytis cinerea Pers. in Apple Fruit. Journal of Phytopathology. 89(3). 208–215. 6 indexed citations
19.
Raa, Jan & A. Kaars Sijpesteijn. (1968). A biochemical mechanism of natural resistance of apple to Venturia inaequalis. European Journal of Plant Pathology. 74(6). 229–231. 8 indexed citations
20.
Raa, Jan & Jostein Goksøyr. (1966). Substrate Dependent Reversibility of Inhibition by β‐Thujaplicin of Glucose and Acetate Respiration in Saccharomyces cerevisiae. Physiologia Plantarum. 19(3). 840–847. 2 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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