1,721,260 research outputs found
Asplenium caudatum G. Forster 1786
No full textAsplenium caudatum G.Forst. ISLANDS OF THE PACIFIC OCEAN. Isotypes, islands of the Pacific Ocean, G. Forster s.n. (BM001048371!); G. Forster s. n. (LIV!); islands of Pacific Sea, G. Forster s.n. (GOET012797!). FRENCH POLYNESIA, Society islands, Tahiti: vers 1200 m, Nadeaud s. n. (P!); Herbier E. Drake, Savatier s. n. (two sheets, P!); Herbier E. Drake, Nadeaud s. n. (P!); Vallée de la rivière Paho, Toahotu, crête sud, 149°16’W, 17°47’S, 650 m, Florence & Jourdan 11075 (US01517559!); Island of Moorea: Mt. Muaroa, elev. 429 m, 17.54735ºS, 149.84485ºW, 12 August 2010, J . Nitta 570 (P00847390!). Marquesas Islands, Ua Pou Island, Poumaka, mid-elevation wet forest, 680 m, 9° 23′ 26″, 140° 4′ 58″, 30 October 2017, Schuettpelz, E . Wood, K.R. & Butaud, J.-F. 1857 (US01936878!); Hivaoa, F.W . Christian s.n. (P!); Fatu Hiva, K.R . Wood 4491, 2 sheets (P!).Published as part of Salgado, Arthur Edward, 2021, Taxonomic and nomenclatural notes on Philippine ferns. IV. Asplenium pahli (Polypodiales, Aspleniineae, Aspleniaceae), a new species from Leyte, Philippines, pp. 71-84 in Phytotaxa 524 (2) on page 81, DOI: 10.11646/phytotaxa.524.2.1, http://zenodo.org/record/564203
Fitoquímica y propiedades biológicas de Drimys winteri JR et G. Forster var chilensis (DC) A.
Full text linkDrimys winteri JR et G. Forster var chilensis (DC) A. is a tree native to central and southern Chile. Also it found in part of Argentina. It is abundant in wet swampy localities from sea level to an altitude of 1700 m. This tree is sacred for the Mapuche culture; it is used in folk medicine in such as inflammatory and painful processes. Phytochemical studies have demonstrated that this plant contains mainly sesquiterpenes of the drimane type, flavonoids, essential oils, phytosterols and some lignans. These drimanes have attracted interest because of their antifeedant, plant growth regulation, cytotoxic, antimicrobial and insecticidal properties. The objective of this review is to establish clearly the phytochemistry and biological activity of Drimys winteri JR et G. Forster var chilensis (DC) A. Articles based on other varieties are not considered.Drimys winteri JR et G. Forster var chilensis (DC) A. es un árbol nativo del centro y sur de Chile. Tambien se encuentra en parte de Argentina. Es abundante en localidades pantanosas y húmedas desde el nivel del mar hasta una altitud de 1700 m. Este árbol es sagrado para la cultura mapuche. Se utiliza en la medicina popular para tratar enfermedades como procesos inflamatorios y dolorosos. Los estudios fitoquímicos han demostrado que esta planta contiene principalmente sesquiterpenos del tipo drimano, flavonoides, aceites esenciales, fitoesteroles y algunos lignanos. Estos drimanos han despertado interés debido a sus propiedades antialimentarias, regulación del crecimiento de las plantas, propiedades citotóxicas, antimicrobianas e insecticidas. El objetivo de este examen es establecer claramente la fitoquímica y la actividad biológica de Drimys winteri JR et G. Forster var chilensis (DC) A. No se consideran los artículos basados en otras variedades D. winteri var winteri
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
On the occurrence of parasitic plant Balanophora fungosa J.R. Forster & G. Forster (Balanophoraceae) in Andhra Pradesh, India
No full textBalanophora fungosa J.R. Forster & G. Forster (Balanophoraceae), a holoparasitic species is recorded as an addition to the flora of Andhra Pradesh, India. It is described here along with its distribution and threats. Field photographs have been provided to facilitate identification of the species.</p
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
The occurrence of axial latex tubes in the secondary xylem of some species of Artocarpus J. R. & G. Forster (Moraceae)
No full textIn a number of species of Artocarpus J.R. & G. Forster (Moraceae) laticifers were not only observed as radial tubes, enclosed in the ray tissue, but also as axial tubes, enclosed in the fibre tissue. Both types of latex tubes are connected and considered as one branched laticiferous system. A detailed description of the individual latex tubes and the whole system, based on light microscopic and scanning electron microscopic observation, is presented
The occurrence of axial latex tubes in the secondary xylem of some species of Artocarpus J. R. & G. Forster (Moraceae)
No full textIn a number of species of Artocarpus J.R. & G. Forster (Moraceae) laticifers were not only observed as radial tubes, enclosed in the ray tissue, but also as axial tubes, enclosed in the fibre tissue. Both types of latex tubes are connected and considered as one branched laticiferous system. A detailed description of the individual latex tubes and the whole system, based on light microscopic and scanning electron microscopic observation, is presented
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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