2,294 research outputs found
Healdianella subdistincta Wang 1983
No full textHealdianella cf. subdistincta Wang, 1983 Fig. 8Q–R Material examined CHINA • 1 complete carapace (Fig. 8Q); Blue Snake section, Tangbagou Formation, sample 19BAI 02; P6M 3912 • 1 complete carapace (Fig. 8R); Blue Snake section, Tangbagou Formation, sample 19BAI 02; P6M 3913 • 8 complete carapaces; Blue Snake section, Tangbagou Formation, samples 19BAI 03, 19BAI 08, 19BAI 23. All from the Tournaisian, early Carboniferous. Dimensions RV: L = 359–697µm, H = 189–300µm, H/L = 0.42–0.52. LV: L = 359–688µm, H = 200–291 µm, H/L = 0.42–0.56. Remarks This species is rare in the studied material. The specimens are morphologically close to Healdianella subdistincta Wang, 1983 from the Emsian, early Devonian of Guangxi, South China (Wang 1983a) but they have a more elongated morphology, a straight DB with Hmax developed all along DB and a straight PDB with distinct AD angulation. Healdianella subdistincta is larger, with L ranging from 1440 to 1760 µm, H from 880 to 1000µm and H/L between 0.57 and 0.61, while it is between 0.47 and 0.56 here. Our material has a small size and may correspond to juveniles so that we only compare them to Healdianella subdistincta until more material is found to clarify this issue. Occurrence Samples 19BAI 02, 19BAI 03, 19BAI 08, 19BAI 23, Tangbagou Formation, Blue Snake section, Tournaisian, early Carboniferous (this work).Published as part of Guillam, Elvis, Forel, Marie-Béatrice, Song, Junjun & Crasquin, Sylvie, 2022, Late Devonian-early Carboniferous ostracods (Crustacea) from South China: taxonomy, diversity and implications, pp. 1-62 in European Journal of Taxonomy 804 on page 33, DOI: 10.5852/ejt.2022.804.1689, http://zenodo.org/record/635931
Global reaction mechanisms for MILD oxy-combustion of methane
No full textAbstract not availableFan Hu, Pengfei Li, Junjun Guo, Zhaohui Liu, Lin Wang, Jianchun Mi, Bassam Dally, Chuguang Zhen
Outlier Detection and Comparison of Origin-Destination Flows Using Data Depth
No full textAdvances in location-aware technology have resulted in massive trajectory data. Origin-destination (OD) trajectories provide rich information on urban flow and transport demand. This study describes a new method for detecting OD flows outliers and conducting hypothesis testing between two OD flow datasets in terms of the variations of spatial extent, that is, spread. The proposed method is based on data depth, which measures the centrality and outlyingness of a point with respect to a given dataset in R^d. Based on the center-outward ordering property, the proposed method analyzes the underlying characteristics of OD flows, such as location, outlyingness, and spread. The ability of the method to detect OD anomalies is compared with that of the Mahalanobis distance approach, and an F-test is used to verify the difference in scale. Empirical evaluation has demonstrated that our method effectively identifies OD flows outliers in an interactive way. Furthermore, the method can provide new perspectives such as spatial extent by considering the overall structure of data when comparing two different OD flows in terms of scale
Bairdia nanbiancunensis Wang 1988
No full textBairdia nanbiancunensis Wang, 1988 Fig. 10D–E Bairdia nanbiancunensis Wang, 1988b: 239, pl. 60 figs 9–12. Bairdia nanbiancunensis – Olempska 1999: 428, fig. 29h. — Jones: unpublished data, fide Olempska 1999. Bairdia sp. – Coen 1989: 317, pl. 2 figs 2 – 3. non Bairdia beichuanensis Wei, 1983 – Song & Gong 2019: Song & Gong 2019: fig. 5a. Material examined CHINA • 1 complete carapace (Fig. 10D); Blue Snake section, Gelaohe Formation, sample 19BAI 69; P6M 3940 • 1 complete carapace (Fig. 10E); Blue Snake section, Gelaohe Formation, sample 19BAI 68; P6M 3941 • 4 complete carapaces; Blue Snake section, Gelaohe Formation, samples 19BAI 67, 19BAI 69, 19BAI 80. All from the Famennian, late Devonian. Dimensions RV: L = 941–2112 µm, H = 516–1050µm, H/L = 0.48–0.56. LV: L = 941–2136 µm, H = 536–1332 µm, H/L = 0.57–0.65. Remarks This species is rare in the studied material. Bairdia beichuanensis Wei, 1983 in Song & Gong (2019) from the Famennian and the Tournaisian of the Baihupo section, Guizhou, South China (Song & Gong 2019) does not belong to Bairdia beichuanensis as shown by the strong ventral and dorsal overlap and stocky morphology. Based on these characters, it is here reattributed to Bairdia nanbiancunensis Wang, 1988. Coen (1989) reported Bairdia sp. from the Gelaohe Formation, Baihupo section, Guizhou, South China, Famennian. Following Olempska (1999), we consider that it belongs to Bairdia nanbiancunensis. The specimens shown in Coen (1989: pl. 2 gigs 2b, 3b) and in Song & Gong (2019: fig. 5a) have a size similar to our material with respectively L = 1000–1100 µm, H = 650–675 µm, H/L = 0.59–0.67 and L = 1120µm, H = 706µm, H/L = 0.63. The specimen shown in Olempska (1999: fig. 29h) is as long as our biggest specimen and higher (L = 2310µm, H = 1540 µm, H/L = 0.67) but we consider that these differences are intraspecific variability. Three ontogenetic stages (A-2 to Ad) are present in our material; they only differ by the size without major changes throught ontogeny. Occurrence Nanbiancun, Guilin, South China, middle Tournaisian, (Wang 1988b). Gelaohe Formation, Baihupo section, Guizhou, South China, Famennian, late Devonian (Coen 1989). Muhua Formation, Guizhou, South China, early Carboniferous (Olempska 1999). Laurel Formation, Canning Basin, Western Australia, Tournaisian, early Carboniferous (Jones, unpublished data, fide Olempska 1999). Gelaohe and Tangbagou Formation, Blue Snake section, Guizhou, South China, Famennian–Tournaisian, late Devonian–early Carboniferous (Song & Gong 2019). Samples 19BAI 67, 19BAI 69, 19BAI 80, Blue Snake section, Gelaohe Formation, Famennian, late Devonian (this work).Published as part of Guillam, Elvis, Forel, Marie-Béatrice, Song, Junjun & Crasquin, Sylvie, 2022, Late Devonian-early Carboniferous ostracods (Crustacea) from South China: taxonomy, diversity and implications, pp. 1-62 in European Journal of Taxonomy 804 on pages 35-36, DOI: 10.5852/ejt.2022.804.1689, http://zenodo.org/record/635931
Fig. 8 in Terpene Shikimate conjugated meroterpenoids from the endophytic fungus Guignardia mangiferae
No full textFig. 8. ΔδH(S-R) value of MTPA esters of 6 in CDCl3.Published as part of Chen, Keliang, Chen, Chunmei, Liu, Xiulan, Sun, Weiguang, Deng, Yanfang, Liu, Junjun, Wang, Jianping, Luo, Zengwei, Zhu, Hucheng & Zhang, Yonghui, 2021, Terpene Shikimate conjugated meroterpenoids from the endophytic fungus Guignardia mangiferae, pp. 1-9 in Phytochemistry (112860) 190 on page 6, DOI: 10.1016/j.phytochem.2021.112860, http://zenodo.org/record/825739
Fig. 2. Key 1H–1H in Terpene Shikimate conjugated meroterpenoids from the endophytic fungus Guignardia mangiferae
No full textFig. 2. Key 1H–1H COSY and HMBC correlations of compounds 1, 3, 6, and 9.Published as part of Chen, Keliang, Chen, Chunmei, Liu, Xiulan, Sun, Weiguang, Deng, Yanfang, Liu, Junjun, Wang, Jianping, Luo, Zengwei, Zhu, Hucheng & Zhang, Yonghui, 2021, Terpene Shikimate conjugated meroterpenoids from the endophytic fungus Guignardia mangiferae, pp. 1-9 in Phytochemistry (112860) 190 on page 4, DOI: 10.1016/j.phytochem.2021.112860, http://zenodo.org/record/825739
High-Performance Nanofiltration Membrane with Dual Resistance to Gypsum Scaling and Biofouling for Enhanced Water Purification
No full textNanofiltration (NF) technology is pivotal for ensuring a sustainable and reliable supply of clean water. To address the critical need for advanced thin-film composite (TFC) polyamide (PA) membranes with exceptional permselectivity and fouling resistance for emerging contaminant purification, we introduce a novel high-performance NF membrane. This membrane features a selective polypiperazine (PIP) layer functionalized with amino-containing quaternary ammonium compounds (QACs) through an in situ interfacial polycondensation reaction. Our investigation demonstrated that precise QAC functionalization enabled the construction of the selective PA layer with increased surface area, enhanced microporosity, stronger electronegativity, and reduced thickness compared to the control PIP membrane. As a result, the QAC NF membrane exhibited an approximately 51% increase in water permeance compared to the control PIP membrane, while achieving superior retention capabilities for divalent salts (>99%) and emerging organic contaminants (>90%). Furthermore, the incorporation of QACs into the PIP selective layer was proved to be effective in mitigating mineral scaling by allowing selective passage of scale-forming cations, while simultaneously exhibiting strong antimicrobial properties to combat biofouling. The in situ QAC incorporation strategy presented in this study provides valuable guidelines for the fit-for-purpose design of the selective PA layer, which is crucial for the development of high-performance NF membranes for efficient water purification.
Fig. 3 in Structurally diverse and bioactive alkaloids from an insect-derived fungus Neosartorya fischeri
No full textFig. 3. Selected NOESY/ROESY correlations of compounds 1–4, 8, 12, and 16.Published as part of Lin, Shuang, He, Yan, Li, Fengli, Yang, Beiye, Liu, Mengting, Zhang, Sitian, Liu, Junjun, Li, Huaqiang, Qi, Changxing, Wang, Jianping, Hu, Zhengxi & Zhang, Yonghui, 2020, Structurally diverse and bioactive alkaloids from an insect-derived fungus Neosartorya fischeri, pp. 1-10 in Phytochemistry (112374) 175 on page 4, DOI: 10.1016/j.phytochem.2020.112374, http://zenodo.org/record/829536
Theories of Self-Cultivation in Painting - a discussion on the transition from nature to nurture of the concepts in Qi-Yun 氣韻 (Artistic Appeal)
No full text
- …
