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1,853 results on '"Guo, Jiao"'

4. Viscous infuences on jetting process from an impacted concave free surface

Author

Cheng, Xiang-Gang, Chen, Xiao-Peng, Ding, Hang, Zhang, Chun-Yu, Guo, Jiao-Jiao, and Jia, Lai-Bing

Subjects
Physics - Fluid Dynamics
Abstract

A focused jet is generated from a concave free surface through an impact of a tube. Experimental and numerical studies were conducted to explore the viscous influences. The results show that a strong vorticity sheet is generated along the free surface just after impact, and the liquid bulk is initialized ($t\le$$10^{-4}$s). After the impact, the liquid surface evolves freely and a jet is ejected ($t\gg$$10^{-4}$s). Pronounced tangential flow is found, and the material in the jet mainly originates from the viscous penetrating layer below the free surface. According to the above observations, a vorticity mechanism of the free surface evolution is proposed. Further, by combining the viscous and interfacial tension effects, a scaling relation estimating the jetting velocity is derived, which agrees with the numerical and experimental results well. The work will be valuable for viscous droplets preparation., Comment: 13 pages, 7 figures

Published
2022

6. Noninvasive and affordable type 2 diabetes screening by deep learning-based risk assessment and detection using ophthalmic images inspired by traditional Chinese medicine

Author

Zhang, Zhi, Wang, Han, Chen, Lei, Cao, Chensi, Liu, Tengwen, Ren, Ruifang, Zhou, Ruixing, Huang, Rudan, Hu, Dan, Zhu, Chenxing, Lu, Chong, Xu, Yunsheng, Fang, Zhaohui, Lu, Fuer, Pan, Huimin, Su, Yanjin, Fu, Nanlin, Zhan, Huixia, Si, Qin, Bai, Chenze, Le Ge, Ri, Cao, Hongmei, Dong, Wei, Yang, Guohui, Wu, Lan, Guo, Jiao, and Cheng, Jing

Published
2023
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27. Research on Civic Education for Students Based on the Curriculum Cultivation System of Higher Education Institutions

Author

Ding, Feng, Lei, Daohai, Guo, Jiao, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Khan, Intakhab Alam, editor, Ramaswamy, Ganesan, editor, and Hussin, Zaharah Binti, editor

Published
2023
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28. Understanding the characteristics of loess strata and quaternary climate changes in Luochuan, Shaanxi Province, China, through core analysis

Author

Guo Jiao, Shi Jiansheng, Song Chao, Dong Qiuyao, and Wang Wei

Subjects
paleoclimate, loess characteristics, paleomagnetism, magnetic susceptibility, particle size, loss on ignition, Geology, QE1-996.5
Abstract

Profile sampling, which causes missing or overlapping horizons, has been generally used while studying loess stratigraphy and paleoclimate. Conversely, drill sampling of thick loess can provide a relatively complete and actual record of the Quaternary climate and environmental changes. Here, paleomagnetic chronological analysis and particle size and magnetic susceptibility analyses were performed to accurately reveal the loess stratigraphy characteristics of Luochuan loess tableland in Fu County, Shaanxi Province, China. The FX core revealed that the Quaternary loess layer was 167.03 m thick and consisted of 33 layers of developed loess/paleosol sequences and 37 loess/paleosol assemblages. The paleosol horizons indicated relatively warm and humid climatic period, while loess/sand reflected cold and arid climate. Since 2.6 Ma, the climate of the region has undergone 37 warm and cold cycles trending toward an increasingly dry and cold climate. During this time, 10 paleoclimate cycles occurred during 2.6–1.6 Ma, 15 climate cycles occurred during 1.6–0.8 Ma, and 12 loess–paleosol cycles have occurred from 0.8 Ma to the present day. Our study provides a basis for accurately and comprehensively interpreting the paleoclimate and paleoenvironment during loess deposition formation.

Published
2023
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