J. Grain

1.6k total citations · 1 hit paper
40 papers, 1.2k citations indexed

About

J. Grain is a scholar working on Molecular Biology, Ecology and Agronomy and Crop Science. According to data from OpenAlex, J. Grain has authored 40 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 21 papers in Molecular Biology, 10 papers in Ecology and 8 papers in Agronomy and Crop Science. Recurrent topics in J. Grain's work include Protist diversity and phylogeny (17 papers), Ruminant Nutrition and Digestive Physiology (8 papers) and Microbial Community Ecology and Physiology (5 papers). J. Grain is often cited by papers focused on Protist diversity and phylogeny (17 papers), Ruminant Nutrition and Digestive Physiology (8 papers) and Microbial Community Ecology and Physiology (5 papers). J. Grain collaborates with scholars based in France, Cameroon and Canada. J. Grain's co-authors include J.P. Jouany, Daniël Demeyer, Gilbert Deroux, John O. Corliss, Victor Sprague, Norman D. Levine, Alfred R. Loeblich, Frederick C. Page, B. M. Honigberg and F. G. Wallace and has published in prestigious journals such as Animal Feed Science and Technology, Biology of the Cell and Canadian Journal of Animal Science.

In The Last Decade

J. Grain

40 papers receiving 1.1k citations

Hit Papers

A Newly Revised Classification of the Protozoa* 1980 2026 1995 2010 1980 100 200 300 400 500
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A Newly Revised Classification of the Protozoa*
    1980 566 citations J. Grain et al. The Journal of Protozoology profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
J. Grain France 15 629 454 216 193 167 40 1.2k
Johannes H. P. Hackstein Netherlands 31 1.5k 2.3× 719 1.6× 115 0.5× 205 1.1× 150 0.9× 54 2.3k
Anna Karnkowska Poland 18 858 1.4× 578 1.3× 82 0.4× 91 0.5× 73 0.4× 55 1.2k
H. D. Rodger Ireland 33 298 0.5× 1.0k 2.2× 48 0.2× 173 0.9× 202 1.2× 89 2.9k
D. J. S. Barr Canada 25 1.1k 1.7× 339 0.7× 161 0.7× 48 0.2× 50 0.3× 90 1.9k
Vladimı́r Hampl Czechia 28 1.4k 2.3× 965 2.1× 61 0.3× 643 3.3× 52 0.3× 71 2.6k
D. W. Bruno United Kingdom 29 281 0.4× 573 1.3× 28 0.1× 116 0.6× 41 0.2× 89 2.3k
Patricia Dyal United Kingdom 20 739 1.2× 916 2.0× 19 0.1× 177 0.9× 116 0.7× 28 1.6k
W. W. Guo China 6 935 1.5× 542 1.2× 42 0.2× 72 0.4× 134 0.8× 11 2.3k
Patrice Duroux France 3 639 1.0× 304 0.7× 30 0.1× 51 0.3× 30 0.2× 6 1.3k
Rupert De Wachter Belgium 7 585 0.9× 345 0.8× 15 0.1× 84 0.4× 32 0.2× 8 1.1k

Countries citing papers authored by J. Grain

Since Specialization
Citations

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

Fields of papers citing papers by J. Grain

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Grain

This figure shows the co-authorship network connecting the top 25 collaborators of J. Grain. A scholar is included among the top collaborators of J. Grain 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 J. Grain. J. Grain 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.
Ngassam, Pierre & J. Grain. (2002). Description of the new genus Hysterocinetoides (Ciliophora, Hysterocinetidae) and revision of the systematics of the subclass Hysterocinetia. European Journal of Protistology. 38(1). 11–17. 2 indexed citations
2.
Ngassam, Pierre & J. Grain. (2000). Contribution to the study of hysterocinetidae Ciliates of the genus Ptychostomum. Description of six new species. European Journal of Protistology. 36(3). 285–292. 3 indexed citations
3.
Grain, J., et al.. (1994). An attempt at reconstructing a phylogenetic tree of the Ciliophora using parsimony methods. European Journal of Protistology. 30(1). 1–17. 17 indexed citations
4.
Grain, J.. (1990). Cytology and cytochemistry of rumen protozoa.. ZOOLOGICAL SCIENCE. 7. 111–124. 3 indexed citations
5.
Bonhomme, Annie, et al.. (1989). Etude ultrastructurale de Troglodytella gorillae, cilié de l’intestin des gorilles. European Journal of Protistology. 24(3). 225–237. 15 indexed citations
6.
Jouany, J.P., Daniël Demeyer, & J. Grain. (1988). Effect of defaunating the rumen. Animal Feed Science and Technology. 21(2-4). 229–265. 125 indexed citations
7.
Grain, J.. (1986). The Cytoskeleton in Protists: Nature, Structure, and Functions. International review of cytology. 104. 153–249. 82 indexed citations
8.
Grain, J., et al.. (1986). Interactions entre espèces microbiennes anaérobies dans le rumen. annales de biologie animale biochimie biophysique. 26(1B). 147–159. 2 indexed citations
9.
Grain, J., et al.. (1984). Essai ďApplication de ľAnalyse Phénétique à la Classification du Phylum des Ciliophora. The Journal of Protozoology. 31(4). 496–507. 33 indexed citations
10.
Grain, J., J. Sénaud, C. A. Grolière, & J.P. Jouany. (1980). Implantation and development of ciliate populations (Polyplastron multivesiculatum, Entodinium sp., Isotricha prostoma) in the rumen of sheep under different alimentary regimes. III. General considerations on the rumen ecosystem.. Protist. 16(4). 501–506. 3 indexed citations
11.
Grolière, C. A., et al.. (1980). Observations on some species of endocommensal ciliates from echinoderms from the Gulf of Mexico and Caribbean Sea.. Protist. 16(2). 233–239. 13 indexed citations
12.
Grolière, C. A., et al.. (1980). Implantation and development of populations of ciliate protozoa (Polyplastron multivesiculatum, Entodinium sp., Isotricha prostoma) in the rumen of sheep fed with various diets. II. Diets of hay enriched with cereals.. Protist. 16(3). 385–394. 3 indexed citations
13.
Sénaud, J., et al.. (1980). Implantation and development of rumen ciliates (Polyplastron multivesiculatum, Entodinium sp., Isotricha prostoma) in sheep fed different diets. I. Lucerne-barley diet.. Protist. 16(2). 329–337. 7 indexed citations
14.
Grain, J., et al.. (1976). ULTRASTRUCTURE DU CORTEX BUCCAL ET EVOLUTION CHEZ LES CILIES.. 42 indexed citations
15.
Grain, J. & J. Sénaud. (1976). Oscillospira guillermondii, Bactérie du Rumen: Etude Ultrastructurale du Trichome et de la Sporulation. Journal of Ultrastructure Research. 55(2). 228–244. 5 indexed citations
16.
17.
Grain, J., et al.. (1973). Progress in protozoology : abstracts of papers read at the fourth International Congress on Protozoology, Clermont-Ferrand, 2-10 Septembre 1973. Medical Entomology and Zoology. 1 indexed citations
18.
Thurston, June P. & J. Grain. (1971). Holotrich Ciliates from the Stomach ofHippopotamus amphibius, with Descriptions of Two New Genera and Four New Species. The Journal of Protozoology. 18(1). 133–141. 18 indexed citations
19.
Grain, J.. (1966). [Confirmation by electron microscopy of the place of Balantidium in the order of Trichostomatida].. PubMed. 263(23). 1864–7. 1 indexed citations
20.
Grain, J., et al.. (1960). Sur deux grégarines du genre Monocystella endoparasites des planaires ochridiennes : Fonticola ochridana stankovič et Neodendrocoelum sancti-naùmi stankovič. Annales de Parasitologie Humaine et Comparée. 35(3). 197–208. 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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