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236 results on '"Kang, Hongliang"'

14. SDUW-Net: An Effective Retinal Vessel Segmentation Model

Author

Lin, Hongkai, Kang, Hongliang, Cao, Xinrong, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Chen, Xiaofeng, editor, Yan, Hongyang, editor, Yan, Qiben, editor, and Zhang, Xiangliang, editor

Published
2020
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15. Soil Erosion Characteristics of the Agricultural Terrace Induced by Heavy Rainfalls on Chinese Loess Plateau: A Case Study.

Author

Kang, Hongliang, Wang, Wenlong, Li, Liangna, Han, Lei, and Wei, Sihan

Subjects
*SOIL conservation, *SOIL erosion, *SINKHOLES, *CLIMATE change, *PLASTIC mulching, *LANDSLIDES, *EROSION
Abstract

Terrace erosion has become increasingly pronounced due to the rising incidence of heavy rainfalls resulting from global climate change; however, the processes and mechanisms governing erosion of loess terraces during such events remain poorly understood. A field investigation was performed following a heavy rainfall event in the Tangjiahe Basin to examine the soil erosion characteristics of loess terraces subjected to heavy rainfall events. The results show that various types of erosion occurred on the terraced fields, including rill, gully, and scour hole in water erosion, and sink hole, collapse, and shallow landslide in gravity erosion. Rill erosion and shallow landslide erosion exhibited the highest frequency of occurrence on the new and old terraces, respectively. The erosion moduli of the gully, scour hole, and sink hole on the new terraces were 171.0%, 119.5%, and 308.7% greater than those on the old terraces, respectively. In contrast, lower moduli of collapse and landslide were observed on the new terraces in comparison to the old terraces, reflecting reductions of 34.2% and 23.4%, respectively. Furthermore, the modulus of water erosion (32,102 t/km2) was 4.5 times that of gravity erosion on the new terraces. Conversely, on the old terrace, the modulus of gravity erosion (8804.1 t/km2) exceeded that of water erosion by 14.5%. Gully erosion and collapse dominated the erosion processes, contributing 67.8% and 9.4% to soil erosion on the new terraces and 38.7% and 34.0%, respectively, on the old terraces. In the study area, the new terraces experienced significantly greater erosion (39,252 t/km2) compared to the old terraces (16,491 t/km2). Plastic film mulching, loose and bare ridges and walls, inclined terrace platforms, and high terrace walls, as well as the developing flow paths, might be the key factors promoting the severe erosion of the terraces during heavy rainfall. Improvements in terrace design, construction technologies, temporary protective measures, agricultural techniques, and management strategies could enhance the prevention of soil erosion on terraces during heavy rainfall events. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Evolution of molecular structure of TATB under shock loading from transient Raman spectroscopic technique

Author

Kang, Hongliang, Yang, Xue, Yuan, Wenshuo, Yang, Lei, Li, Xinghan, Liu, Fusheng, Liu, Zhengtang, and Liu, Qijun

Abstract

By combination of the transient Raman spectroscopic measurement and the density functional theoretical calculations, the structural evolution and stability of TATB under shock compression was investigated. Due to the improvement in synchronization control between two-stage light gas gun and the transient Raman spectra acquisition, as well as the sample preparation, the Raman peak of the N–O mode of TATB was firstly observed under shock pressure up to 13.6 GPa, noticeably higher than the upper limit of 8.5 GPa reported in available literatures. By taking into account of the continuous shift of the main peak and other observed Raman peaks, we did not distinguish any structural transition or any new species. Moreover, both the present Raman spectra and the time-resolved radiation of TATB during shock loading showed that TATB exhibits higher chemical stability than previous declaration. To reveal the detailed structural response and evolution of TATB under compression, the density functional theoretical calculations were conducted, and it was found that the pressure make N–O bond lengths shorter, nitro bond angles larger, and intermolecular and intra-molecular hydrogen bond interactions enhanced. The observed red shift of Raman peak was ascribed to the abnormal enhancement of H-bound effect on the scissor vibration mode of the nitro group.

Published
2024
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49. Variation in soil properties and its influence on the dynamic change of soil erosion resistance to overland flow in the water-level fluctuation zone of the Three Gorges Reservoir, China

Author

Xiao, Hai, primary, Guo, Ping, additional, Zhang, Qianheng, additional, Hu, Huan, additional, Hong, Huan, additional, Zhang, Lun, additional, Yang, Yueshu, additional, Xia, Zhenyao, additional, Li, Mingyi, additional, Kang, Hongliang, additional, and Zhang, Guanhua, additional

Published
2022
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