1,722,240 research outputs found
Metabolites from the marine-facultative Aspergillus sp. MEXU 27854 and Gymnoascus hyalinosporus MEXU 29901 from Caleta Bay, Mexico
No full textDuring our ongoing research on fungal strains from unexplored sources, the reinvestigation of the CHCl3-MeOH extract of the marine-facultative Aspergillus sp. MEXU 27854 yielded a new N-methyl cyclic pentapeptide (1) along with known butyrolactone II and PF1233 A. In addition, from the marine-facultative Gymnoascus hyalinosporus MEXU 29901, a new alternariol glucoside, 10-O-[ß-d-(4-methoxyl-glucopyranosyl)]-4-O-methylalternariol (2) and known alternariol 4-O-methyl ether, alternariol and beauvericin, were isolated. The structures of 1 and 2 were established by detailed spectroscopic data, and their absolute configuration was ascertained by Marfey’s analysis and HRESIMS-MS/MS data for 1, and by chemical degradation and optical rotation analysis for 2
Linked collectors and determiners for: MEXU/Asteraceae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Asteraceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/8506ad84-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/8506ad84-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/8506ad84-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/8506ad84-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: MEXU/Leguminosae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Leguminosae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/96acabd8-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/96acabd8-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/96acabd8-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/96acabd8-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
La colección briológica del Herbario Nacional de México (MEXU)
No full textThe bryophyte collection at MEXU was formally established in 1973 with about 3000 specimens; at present, it contains nearly 35000. Emphasis has been made on Mexican and tropical American localities, but herbarium holdings also include temperate areas. Herbarium information is now being stored in a database to assist floristic and taxonomic research in progress and for further reference
Linked collectors and determiners for: MEXU/Agavaceae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Agavaceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/96adf006-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/96adf006-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/96adf006-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/96adf006-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: MEXU/Pinaceae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Pinaceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/96b064a8-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/96b064a8-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/96b064a8-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/96b064a8-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: MEXU/Asclepiadaceae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Asclepiadaceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/861bff1c-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/861bff1c-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/861bff1c-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/861bff1c-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Linked collectors and determiners for: MEXU/Pinaceae.
No full textNatural history specimen data linked to collectors and determiners held within, "MEXU/Pinaceae". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/96b064a8-f762-11e1-a439-00145eb45e9a">https://bionomia.net/dataset/96b064a8-f762-11e1-a439-00145eb45e9a</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/96b064a8-f762-11e1-a439-00145eb45e9a">https://gbif.org/dataset/96b064a8-f762-11e1-a439-00145eb45e9a</a>. Formatted as a Frictionless Data package
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