1,734,319 research outputs found

    Studies on the Constituents of Rodgersia podophylla A. GRAY. II

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    Four constituents, (-)-catechin, (-)-epicatechin, 11-O-galloylbergenin and phloridzin were isolated from the rhizomes of Rodgersia podophylla A. GRAY. Their structures were established on the basis of spectral data.departmental bulletin pape

    argentea

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    Raillardella argentea  (A. Gray) A. GraySilky raillardellaplentiful above timber lineAlpine plan

    ambiguum

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    Eriophyllum ambiguum  (A. Gray) A. GrayAnnual woolly sunflower,  Beautiful woolly sunflowerRed Rock Canyo

    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

    nothofulvus

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    Plagiobothrys nothofulvus  (A. Gray) A. GrayRusty haired popcorn flower,  Rusty popcorn flower, Rusty popcornflowerMt. Hamilto

    rattanii

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    Diplacus rattanii (A. Gray) NesomRattan's monkeyflowerMimulus rattaniiPine Mt.Chaparral burn3300 fee

    nothofulvus

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    Plagiobothrys nothofulvus  (A. Gray) A. GrayRusty haired popcorn flower,  Rusty popcorn flower, Rusty popcornflowerPacific Union College, Angwin1650 fee

    nardosmia

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    Cacaliopsis nardosmia (A. Gray) A. Graysilvercrowncacalie faux-pétasiteapprox. 1 mile S. of Hart's Pass, roadsideopen Pseudotsuga roadsid

    californica

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    Brickellia californica  (Torrey & A. Gray) A. GrayBrickell bush,  California brickellbush, California brickelliaSanta Rita Mountain
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