R. Hardeland

811 total citations
26 papers, 627 citations indexed

About

R. Hardeland is a scholar working on Endocrine and Autonomic Systems, Molecular Biology and Cellular and Molecular Neuroscience. According to data from OpenAlex, R. Hardeland has authored 26 papers receiving a total of 627 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Endocrine and Autonomic Systems, 12 papers in Molecular Biology and 8 papers in Cellular and Molecular Neuroscience. Recurrent topics in R. Hardeland's work include Circadian rhythm and melatonin (13 papers), Photoreceptor and optogenetics research (7 papers) and bioluminescence and chemiluminescence research (5 papers). R. Hardeland is often cited by papers focused on Circadian rhythm and melatonin (13 papers), Photoreceptor and optogenetics research (7 papers) and bioluminescence and chemiluminescence research (5 papers). R. Hardeland collaborates with scholars based in Germany, United States and Kazakhstan. R. Hardeland's co-authors include B. Fuhrberg, Ivonne Balzer, Rüssel J. Reiter, Lucien C. Manchester, Dun‐Xian Tan, Annia Galano, Burkhard Pöeggeler, Ewa Sewerynek, Lornell Barlow‐Walden and R. J. Reiter and has published in prestigious journals such as Journal of Experimental Botany, Oecologia and Planta.

In The Last Decade

R. Hardeland

26 papers receiving 607 citations

Peers

R. Hardeland

EAS

CMN

PHYSI

B. Fuhrberg Germany

Yushu Huo China

R. Dubbels Germany

HANS WALTER SCHIWARA Germany

Luise Fuhr Germany

E. Schnakenberg Germany

Delio Tolivia Spain

Alessandra Porcu Italy

Yawara Sumi Japan

B. Fuhrberg Germany

R. Hardeland

423 ×1.1

EAS

151 ×0.7

133 ×0.8

109 ×0.9

CMN

80 ×0.9

PHYSI

Citations per year, relative to R. Hardeland R. Hardeland (= 1×) peers B. Fuhrberg

Countries citing papers authored by R. Hardeland

Since Specialization

Citations

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

Fields of papers citing papers by R. Hardeland

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R. Hardeland

This figure shows the co-authorship network connecting the top 25 collaborators of R. Hardeland. A scholar is included among the top collaborators of R. Hardeland 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 R. Hardeland. R. Hardeland is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Hardeland, R.. (2018). Extended Signaling by Melatonin. 3(1). 1–13. 9 indexed citations

Tan, Dun‐Xian, R. Hardeland, Lucien C. Manchester, Annia Galano, & Rüssel J. Reiter. (2014). Cyclic-3-hydroxymelatonin (C3HOM), A Potent Antioxidant, Scavenges Free Radicals and Suppresses Oxidative Reactions. Current Medicinal Chemistry. 21(13). 1557–1565. 79 indexed citations

Hardeland, R.. (2014). Melatonin in plants and other phototrophs: advances and gaps concerning the diversity of functions. Journal of Experimental Botany. 66(3). 627–646. 125 indexed citations

Hardeland, R.. (2010). Which mechanisms are involved in the protective actions of melatonin against oxidative stress?. Klinische Neurophysiologie. 41(1). 1 indexed citations

Stebelová, Katarína, Michal Zeman, Germaine Cornélissen, et al.. (2005). Chronomics reveal and quantify circadian rhythmic melatonin in duodenum of rats. Biomedicine & Pharmacotherapy. 59. S209–S212. 11 indexed citations

Hardeland, R., et al.. (2001). INTRACELLULAR IMAGING OF BIOLUMINESCENCE IN PYROCYSTIS NOCTILUCA. 19–22. 1 indexed citations

Burkhardt, S, et al.. (1997). Requirement of Indoleamines and a V-type Proton ATPase for the Expression of the Circadian Glow Rhythm in Gonyaulax polyedra. Biological Rhythm Research. 28(1). 151–159. 7 indexed citations

Hardeland, R. & B. Fuhrberg. (1996). Ubiquitous melatonin-presence and effects in unicells, plants and animals. 126 indexed citations

Reiter, R. J., et al.. (1995). Melatonin, a mediator of electron transfer and repair reactions, acts synergistically with the chain-breaking antioxidants ascorbate, trolox and glutathione. 17(2). 87–92. 71 indexed citations

10.

Balzer, Ivonne & R. Hardeland. (1991). Circadian rhythmicity in the stimulation of bioluminescence by biogenic amines and MAO inhibitors inGonyaulax polyedra. International Journal of Biometeorology. 34(4). 231–234. 17 indexed citations

11.

Balzer, Ivonne & R. Hardeland. (1991). Stimulation of bioluminescence by 5-methoxylated indoleamines in the dinoflagellate, Gonyaulax polyedra. Comparative Biochemistry and Physiology Part C Comparative Pharmacology. 98(2-3). 395–397. 19 indexed citations

12.

Neuhaus‐Steinmetz, Ulrich, Ivonne Balzer, & R. Hardeland. (1990). Ultradian rhythmicity of tyrosine aminotransferase activity inEuglena gracillis: Analysis by cosine and non-sinusoidal fitting procedures. International Journal of Biometeorology. 34(1). 28–34. 8 indexed citations

13.

Balzer, Ivonne, et al.. (1989). A role of melatonin in dinoflagellates?. European Journal of Endocrinology. 120(3_Suppl). S97–S97. 25 indexed citations

14.

Balzer, Ivonne & R. Hardeland. (1989). Structural specificity of catecholamine action in the dinoflagellate, Gonyaulax Polyedra. Comparative Biochemistry and Physiology Part C Comparative Pharmacology. 92(2). 297–300. 3 indexed citations

15.

Hardeland, R., et al.. (1979). Diurnal rhythmicity of nuclear and cytoplasmic polyadenylylated ribonucleic acids and or polyadenylate-dependent polyadenylate polymerase in rat liver.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 6(1). 23–30. 8 indexed citations

16.

Balzer, Ivonne & R. Hardeland. (1979). Rhythmicity of hepatic tyrosine aminotransferase: Role of enzyme activation. Journal of Interdisiplinary Cycle Research. 10(2). 119–123. 1 indexed citations

17.

Hardeland, R.. (1976). Further evidence for a post‐transcriptional component in the regulation of Circadian rhythmicity in cultured liver cells. Possible significance of RNA processing. Journal of Interdisiplinary Cycle Research. 7(4). 291–297. 2 indexed citations

18.

Hardeland, R.. (1975). Diurnal rhythm in rat liver histidase activity. Journal of Interdisiplinary Cycle Research. 6(2). 163–166. 2 indexed citations

19.

Hardeland, R.. (1970). Steigerung der Tyrosin-Transaminase-Aktivit�t durch Chinolins�ure. Die Naturwissenschaften. 57(5). 252–253. 2 indexed citations

20.

Hardeland, R.. (1969). Geschlechtsbedingte Unterschiede bei Tagesrhythmen von Insekten. Oecologia. 3(2). 207–213. 5 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.

Explore authors with similar magnitude of impact