1,721,208 research outputs found
High-performance purification of quaternary alkaloids from Corydalis yanhusuo W. T. Wang using a new polarcopolymerized stationary phase
No full textHigh-performance purification of quaternary alkaloids from Corydalis yanhusuo W. T. Wang using a new polarcopolymerized stationary phas
Gyrocheilos W. T. Wang (Gesneriaceae) a new genus for the flora of Vietnam
No full textGyrocheilos W. T. Wang (Gesneriaceae) a new genus for the flora of Vietna
Diterpenoid alkaloids from the root of <i>Aconitum sinchiangense</i> W. T. Wang with their antitumor and antibacterial activities
No full textA phytochemical study of the root barks of Aconitum sinchiangense W. T. Wang, a traditional Chinese herb medicine, led to the isolation of 15 diterpenoid alkaloids, including one new C19-diterpenoid alkaloid, sinchiangensine A (1), whose structure was determined by spectral methods including 2D NMR. Additionally, sinchiangensine A and its known analogue 3 were first reported as potential antitumor and antibacterial diterpenoid alkaloids, which showed significant antitumor activities against tumour cells (HL-60, A-549, SMCC-7721, MCF-7 and SW480), with IC50 comparable to cisplatin, and significant antibacterial activities against Staphylococcus aureus ATCC-25923 with MIC value of 0.147 and 0.144 μmol/mL, respectively.</p
The complete chloroplast genome sequence of Aconitum austroyunnanense W. T. Wang (Ranunculaceae): a medicinal plant endemic to China
No full textThe complete chloroplast (cp) genome of Aconitum austroyunnanense W. T. Wang, a rare and endangered medicinal plant endemic to southwestern China, was sequenced to be 155,818 bp in length, including two inverted repeat (IR, 26,128 bp) regions, one large single-copy region (LSC) and one small single-copy region (SSC) of 86,555 bp and 17,007 bp, respectively. The cp genome has 131 annotated genes, including 85 protein-coding genes, 37 tRNA genes, 8 rRNA genes, and a pseudogene (ycf1). The overall GC content of it is 38.1%. Phylogenetic analysis revealed that the cp genome of A. austroyunnanense is closely related to that of Aconitum hemsleyanum
Applying target data screening followed by characteristic fragment filtering for the comprehensive screening and identification of alkaloids in <i>Corydalis yanhusuo</i> W. T. Wang by UPLC-Q-TOF/MS<sup>E</sup>
No full textA target data screening strategy followed by characteristic fragment filtering by UPLC-Q-TOF/MSE was developed for rapidly and comprehensively identifying alkaloids in Corydalis yanhusuo W. T. Wang (Yanhusuo).</p
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Variations on the Author
Get PDF“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
FIGURE 4, A–D. Elatostema androstachyum W. T. Wang Y. G. Wei & A in Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi
No full textFIGURE 4, A–D. Elatostema androstachyum W. T. Wang Y. G. Wei & A. Monro: A, Habitat; B, Habit with staminate (centre) and pistillate inflorescences (bottom-right) visible; C, Pistillate inflorescence; D, Staminate inflorescence. (A–D by Yi-Gang Wei from the isotype)Published as part of Wei, Yi-Gang, Monro, A.K. & Wang, Wen-Tsai, 2013, Additions to the Flora of China: three new species of Elatostema (Urticaceae) from Guangxi, pp. 1-12 in Phytotaxa 147 (1) on page 7, DOI: 10.11646/phytotaxa.147.1.1, http://zenodo.org/record/510017
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
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