R Lehnfeld

439 total citations
12 papers, 327 citations indexed

About

R Lehnfeld is a scholar working on Pathology and Forensic Medicine, Complementary and alternative medicine and Pharmacology. According to data from OpenAlex, R Lehnfeld has authored 12 papers receiving a total of 327 indexed citations (citations by other indexed papers that have themselves been cited), including 3 papers in Pathology and Forensic Medicine, 3 papers in Complementary and alternative medicine and 2 papers in Pharmacology. Recurrent topics in R Lehnfeld's work include Tea Polyphenols and Effects (3 papers), Neuroscience and Neuropharmacology Research (2 papers) and Advanced Chemical Sensor Technologies (2 papers). R Lehnfeld is often cited by papers focused on Tea Polyphenols and Effects (3 papers), Neuroscience and Neuropharmacology Research (2 papers) and Advanced Chemical Sensor Technologies (2 papers). R Lehnfeld collaborates with scholars based in Germany, Switzerland and Hungary. R Lehnfeld's co-authors include Björn Feistel, Hartwig Sievers, H. Winterhoff, Wilfried Dimpfel, Eugen J. Verspohl, Frank Begrow, W. Kehrl, Ivo Pischel, Hans‐Hinrich Sievers and Bruno Frank and has published in prestigious journals such as Journal of Pharmacy and Pharmacology, Phytomedicine and Journal of Neural Transmission.

In The Last Decade

R Lehnfeld

11 papers receiving 308 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
R Lehnfeld Germany	10	169	115	57	48	38	12	327
Björn Feistel Germany	9	165 1.0×	167 1.5×	64 1.1×	92 1.9×	92 2.4×	14	469
Nicolas Feuillère Spain	9	149 0.9×	99 0.9×	27 0.5×	127 2.6×	61 1.6×	10	383
Mehrdad Shahrani Iran	12	115 0.7×	146 1.3×	88 1.5×	67 1.4×	154 4.1×	49	538
Julie Whitehouse United Kingdom	11	162 1.0×	100 0.9×	91 1.6×	36 0.8×	55 1.4×	19	336
Mousa Khani Iran	7	150 0.9×	138 1.2×	30 0.5×	63 1.3×	130 3.4×	9	427
Edith Teles Venâncio Brazil	7	91 0.5×	59 0.5×	49 0.9×	84 1.8×	75 2.0×	14	339
Sumita Halder India	14	109 0.6×	100 0.9×	45 0.8×	71 1.5×	63 1.7×	29	397
Hyein Oh South Korea	6	86 0.5×	82 0.7×	106 1.9×	58 1.2×	58 1.5×	13	374
Michael Ploch Germany	7	62 0.4×	66 0.6×	84 1.5×	60 1.3×	44 1.2×	9	298
Emuesiri Goodies Moke Nigeria	13	70 0.4×	71 0.6×	50 0.9×	36 0.8×	83 2.2×	58	417

Countries citing papers authored by R Lehnfeld

Since Specialization

Citations

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

Fields of papers citing papers by R Lehnfeld

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R Lehnfeld

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

All Works

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12 of 12 papers shown

Ullmann, U., et al.. (2009). Relative bioavailability of imipramine (Tofranil) coated tablets in healthy volunteers. International Journal of Clinical Pharmacology and Therapeutics. 39(6). 271–6.

Begrow, Frank, et al.. (2009). Impact of Thymol in Thyme Extracts on Their Antispasmodic Action and Ciliary Clearance. Planta Medica. 76(4). 311–318. 51 indexed citations

Mueller, Silke, J. Majcher‐Peszynska, Ralf G. Mundkowski, et al.. (2008). No clinically relevant CYP3A induction after St. John’s wort with low hyperforin content in healthy volunteers. European Journal of Clinical Pharmacology. 65(1). 81–87. 42 indexed citations

Feistel, Björn, et al.. (2007). Extracts of Valeriana officinalis L. s.l. show anxiolytic and antidepressant effects but neither sedative nor myorelaxant properties. Phytomedicine. 15(1-2). 2–15. 123 indexed citations

Dimpfel, Wilfried, et al.. (2007). Theogallin and L-theanine as active ingredients in decaffeinated green tea extract: I. electrophysiological characterization in the rat hippocampus in-vitro. Journal of Pharmacy and Pharmacology. 59(8). 1131–1136. 12 indexed citations

Dimpfel, Wilfried, et al.. (2007). Source density analysis of the human EEG after ingestion of a drink containing decaffeinated extract of green tea enriched with L-theanine and theogallin. Nutritional Neuroscience. 10(3-4). 169–180. 15 indexed citations

Dimpfel, Wilfried, et al.. (2007). Theogallin and l-theanine as active ingredients in decaffeinated green tea extract: II. Characterization in the freely moving rat by means of quantitative field potential analysis. Journal of Pharmacy and Pharmacology. 59(10). 1397–1403. 16 indexed citations

Dimpfel, Wilfried, et al.. (2006). Neurophysiological characterization of a functionally active drink containing extracts of ginkgo and ginseng by source density analysis of the human EEG. Nutritional Neuroscience. 9(5-6). 213–224. 11 indexed citations

Sievers, Hans‐Hinrich, et al.. (2006). Efficacy and tolerability of a spray with Salvia officinalis in the treatment of acute pharyngitis - a randomised, double-blind, placebo-controlled study with adaptive design and interim analysis.. PubMed. 11(1). 20–6. 24 indexed citations

10.

Beuscher, N., et al.. (2005). Tolerability and efficacy of Bioaron CReg. syrup in treatment of upper respiratory tract infections in children. Results of a post-marketing surveillance study in Poland. Herba Polonica. 51. 45–53. 1 indexed citations

11.

Dimpfel, Wilfried, Ivo Pischel, & R Lehnfeld. (2004). Effects of lozenge containing lavender oil, extracts from hops, lemon balm and oat on electrical brain activity of volunteers.. PubMed. 9(9). 423–31. 19 indexed citations

12.

Gerlach, M., Ai Xiao, W. Kuhn, et al.. (2001). The central catechol-O-methyltransferase inhibitor tolcapone increases striatal hydroxyl radical production in l-DOPA/carbidopa treated rats. Journal of Neural Transmission. 108(2). 189–204. 13 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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