Ralf Kellmann

2.5k total citations
26 papers, 2.0k citations indexed

About

Ralf Kellmann is a scholar working on Environmental Chemistry, Molecular Biology and Endocrinology, Diabetes and Metabolism. According to data from OpenAlex, Ralf Kellmann has authored 26 papers receiving a total of 2.0k indexed citations (citations by other indexed papers that have themselves been cited), including 15 papers in Environmental Chemistry, 10 papers in Molecular Biology and 7 papers in Endocrinology, Diabetes and Metabolism. Recurrent topics in Ralf Kellmann's work include Marine Toxins and Detection Methods (11 papers), Protist diversity and phylogeny (9 papers) and Hormonal and reproductive studies (5 papers). Ralf Kellmann is often cited by papers focused on Marine Toxins and Detection Methods (11 papers), Protist diversity and phylogeny (9 papers) and Hormonal and reproductive studies (5 papers). Ralf Kellmann collaborates with scholars based in Norway, Australia and Sweden. Ralf Kellmann's co-authors include Brett A. Neilan, Troco Kaan Mihali, Leanne A. Pearson, Michelle C. Moffitt, Anke Stüken, Francesco Pomati, Russell Pickford, Young Jae Jeon, Kjetill S. Jakobsen and Russell J. S. Orr and has published in prestigious journals such as PLoS ONE, Applied and Environmental Microbiology and The Journal of Clinical Endocrinology & Metabolism.

In The Last Decade

Ralf Kellmann

25 papers receiving 1.9k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Ralf Kellmann Norway 17 1.4k 703 687 653 284 26 2.0k
Paul M. D’Agostino Germany 21 849 0.6× 370 0.5× 629 0.9× 287 0.4× 212 0.7× 47 1.6k
Tetsuya Ohta Japan 11 1.1k 0.7× 590 0.8× 368 0.5× 207 0.3× 455 1.6× 18 1.6k
Néstor Lagos Chile 23 1.4k 1.0× 482 0.7× 507 0.7× 319 0.5× 152 0.5× 58 1.8k
Noureddine Bouaı̈cha France 24 1.5k 1.0× 812 1.2× 212 0.3× 470 0.7× 627 2.2× 48 1.9k
Axel Oberemm Germany 24 928 0.6× 473 0.7× 392 0.6× 246 0.4× 317 1.1× 48 2.0k
Darı́o Andrinolo Argentina 21 1.3k 0.9× 629 0.9× 218 0.3× 312 0.5× 320 1.1× 50 1.6k
Shinshi Oishi Japan 22 875 0.6× 521 0.7× 193 0.3× 208 0.3× 342 1.2× 47 2.1k
Kathleen S. Rein United States 29 1.2k 0.8× 420 0.6× 850 1.2× 309 0.5× 152 0.5× 72 2.1k
Andrew R. Humpage Australia 21 1.9k 1.3× 742 1.1× 183 0.3× 519 0.8× 566 2.0× 26 2.5k
Mats X. Andersson Sweden 32 212 0.1× 273 0.4× 1.5k 2.2× 248 0.4× 138 0.5× 70 3.1k

Countries citing papers authored by Ralf Kellmann

Since Specialization
Citations

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

Fields of papers citing papers by Ralf Kellmann

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ralf Kellmann

This figure shows the co-authorship network connecting the top 25 collaborators of Ralf Kellmann. A scholar is included among the top collaborators of Ralf Kellmann 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 Ralf Kellmann. Ralf Kellmann 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.
Viste, Kristin, Christopher‐John L. Farrell, Ralf Kellmann, et al.. (2025). A Parametric Empirical Bayes Approach to Personalized Reference Intervals and Reference Change Values. Clinical Chemistry. 71(11). 1147–1157.
2.
Viste, Kristin, Ralf Kellmann, Bashir Alaour, et al.. (2024). Estimating Reference Change Values Using Routine Patient Data: A Novel Pathology Database Approach. Clinical Chemistry. 71(2). 307–318. 2 indexed citations
3.
Viste, Kristin, Bashir Alaour, Marit Sverresdotter Sylte, et al.. (2022). Sex Hormones and Adrenal Steroids: Biological Variation Estimated Using Direct and Indirect Methods. Clinical Chemistry. 69(1). 100–109. 14 indexed citations
4.
Ueland, Grethe Åstrøm, Ralf Kellmann, Kristin Viste, et al.. (2021). Bedtime Salivary Cortisol as a Screening Test for Cushing Syndrome in Children. Journal of the Endocrine Society. 5(5). bvab033–bvab033. 8 indexed citations
5.
Kellmann, Ralf, Kristin Viste, Hans Petter Eikesdal, et al.. (2020). An Ultrasensitive Routine LC-MS/MS Method for Estradiol and Estrone in the Clinically Relevant Sub-Picomolar Range. Journal of the Endocrine Society. 4(6). bvaa047–bvaa047. 24 indexed citations
6.
Mazmouz, Rabia, Russell Pickford, Bakir Al‐Sinawi, et al.. (2020). Heterologous Expression of an Unusual Ketosynthase, SxtA, Leads to Production of Saxitoxin Intermediates in Escherichia coli. ChemBioChem. 22(5). 845–849. 11 indexed citations
7.
Karlsen, Odd André, Jørn V. Sagen, Gunnar Mellgren, et al.. (2018). LC-MS/MS based profiling and dynamic modelling of the steroidogenesis pathway in adrenocarcinoma H295R cells. Toxicology in Vitro. 52. 332–341. 19 indexed citations
8.
Ueland, Grethe Åstrøm, Paal Methlie, Marianne Øksnes, et al.. (2018). The Short Cosyntropin Test Revisited: New Normal Reference Range Using LC-MS/MS. The Journal of Clinical Endocrinology & Metabolism. 103(4). 1696–1703. 43 indexed citations
9.
Karlsen, Odd André, Nello Blaser, Karin Zimmer, et al.. (2018). Effects of defined mixtures of POPs and endocrine disruptors on the steroid metabolome of the human H295R adrenocortical cell line. Chemosphere. 218. 328–339. 18 indexed citations
10.
Hudnell, H. Kenneth, Ralf Kellmann, Brett A. Neilan, et al.. (2015). The genetics and genomics of cyanobacterial toxicity. 1 indexed citations
11.
Stüken, Anke, Russell J. S. Orr, Ralf Kellmann, et al.. (2011). Discovery of Nuclear-Encoded Genes for the Neurotoxin Saxitoxin in Dinoflagellates. PLoS ONE. 6(5). e20096–e20096. 175 indexed citations
12.
Kellmann, Ralf, et al.. (2010). Biosynthesis and Molecular Genetics of Polyketides in Marine Dinoflagellates. Marine Drugs. 8(4). 1011–1048. 103 indexed citations
13.
Mihali, Troco Kaan, Ralf Kellmann, & Brett A. Neilan. (2009). Characterisation of the paralytic shellfish toxin biosynthesis gene clusters in Anabaena circinalis AWQC131C and Aphanizomenon sp. NH-5. BMC Biochemistry. 10(1). 8–8. 149 indexed citations
14.
Kellmann, Ralf, et al.. (2009). Proteomic response of human neuroblastoma cells to azaspiracid-1. Journal of Proteomics. 72(4). 695–707. 20 indexed citations
15.
Neilan, Brett A., et al.. (2008). The genetics and genomics of cyanobacterial toxicity. Advances in experimental medicine and biology. 619. 417–452. 31 indexed citations
16.
Kellmann, Ralf, et al.. (2008). Identification of a Saxitoxin Biosynthesis Gene with a History of Frequent Horizontal Gene Transfers. Journal of Molecular Evolution. 67(5). 526–538. 77 indexed citations
17.
Kellmann, Ralf, Troco Kaan Mihali, Young Jae Jeon, et al.. (2008). Biosynthetic Intermediate Analysis and Functional Homology Reveal a Saxitoxin Gene Cluster in Cyanobacteria. Applied and Environmental Microbiology. 74(13). 4044–4053. 317 indexed citations
18.
Kellmann, Ralf & Brett A. Neilan. (2007). BIOCHEMICAL CHARACTERIZATION OF PARALYTIC SHELLFISH TOXIN BIOSYNTHESIS IN VITRO1. Journal of Phycology. 43(3). 497–508. 67 indexed citations
19.
Kellmann, Ralf, et al.. (2006). Functional Modeling and Phylogenetic Distribution of Putative Cylindrospermopsin Biosynthesis Enzymes. Journal of Molecular Evolution. 62(3). 267–280. 74 indexed citations
20.
Pomati, Francesco, et al.. (2006). Comparative gene expression of PSP-toxin producing and non-toxic Anabaena circinalis strains. Environment International. 32(6). 743–748. 11 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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