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The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textYuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai, Chen, Diling (2021): The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves. Phytochemistry (112572) 181: 1-10, DOI: 10.1016/j.phytochem.2020.112572, URL: http://dx.doi.org/10.1016/j.phytochem.2020.11257
Fig. 1. Chemical structures for compounds 1–10 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 1. Chemical structures for compounds 1–10.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 2, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
Fig. 6 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 6. The CD spectra of compounds 1–8.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 8, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
Fig. 3 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 3. Key COSY, HMBC and selected observed ROE correlations of compounds 1–5 and 8.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 4, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
Fig. 5 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 5. Plausible MS/MS fragment ion structures of truxinate forms (2–4, 8) during the fragmentation process in the positive and negative ion mode. It showed that the main fragmentation pattern of truxinate configurations was complex and asymmetrical.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 7, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
Fig. 4 in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 4. Plausible MS/MS fragment ion structures of truxillate forms (1, 5–7) and their precursors (9, 10) during the fragmentation process in negative and positive ion mode. It showed that the main fragmentation pattern of truxillate configurations was symmetric dissociation.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 6, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
Fig. 2. X in The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves
No full textFig. 2. X-ray structure of compound 1, the displacement ellipsoids are drawn at the 50% probability level. Another molecular compound 1, H2O molecules, CO molecule and Ca atoms are not shown. H atoms are shown as small spheres of arbitrary radii.Published as part of Yuan, Xujiang, Liu, Yadi, Zhao, Huan, Men, Lijiao, He, Cuimin, Qiu, Yu, Yu, Qiangqiang, Li, Kunping, Qi, Longkai & Chen, Diling, 2021, The isolation, structure and fragmentation characteristics of natural truxillic and truxinic acid derivatives in Abrus mollis leaves, pp. 1-10 in Phytochemistry (112572) 181 on page 2, DOI: 10.1016/j.phytochem.2020.112572, http://zenodo.org/record/829114
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
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
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