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    Sur les glandes pygidiennes chez les Carabides et les Dytiscides [Col.]

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    Dierckx Fr. Sur les glandes pygidiennes chez les Carabides et les Dytiscides [Col.]. In: Bulletin de la Société entomologique de France, volume 4 (11),1899. pp. 200-202

    Sur les glandes pygidiennes chez les Carabides et les Dytiscides [Col.]

    No full text
    Dierckx Fr. Sur les glandes pygidiennes chez les Carabides et les Dytiscides [Col.]. In: Bulletin de la Société entomologique de France, volume 4 (11),1899. pp. 200-202

    Sur la valeur des glandes pygidiennes pour la classification des Carabiques, d'après le mémoire du P. Dierckx

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    Fauvel Albert. Sur la valeur des glandes pygidiennes pour la classification des Carabiques, d'après le mémoire du P. Dierckx. In: Bulletin de la Société entomologique de France, volume 4 (13),1899. pp. 247-248

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Studies in relation to biosynthesis. VII. 2-Hydroxy-6-methylbenzoic acid in Penicillium griseofulvum Dierckx

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    The general problem of the biosynthesis of depsides and depsidones is considered. Feeding experiments using sodium acetate isotopically labelled in the carboxyl group have demonstrated that the mould Penicillium griseofulvum Dierckx (Raistrick's strain P68) elaborates 2-hydroxy-6-methylbenzoic acid (VII) by the head-to-tail linkage of acetic acid units in accord with the hypothesis of Birch and Donovan (1953). This demonstration constitutes the first definite support for the hypothesis based on bio- chemical experiments. </jats:p
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