Showing 1 - 20 results of 29 for search '"Ankang"', query time: 0.04s Refine Results
  1. 1

    Characteristic Analysis and Prediction of Rainfall and Runoff in Ankang Section of Hanjiang River Basin by LIU Yiwen, LI Jiake, DING Qiang, HAO Gairui

    Published 2021-01-01
    “…Accurate runoff simulation plays a very important role in the planning and management of water resources.However,traditional methods have some limitations in the simulation of runoff near peaks and abrupt points.This paper identifies the abrupt change components of rainfall and runoff in the basins above the controlled section of Ankang Hydrological Station in the Hanjiang River Basin through the Mann-Kendall test.analyzes the trend and cycle of the rainfall and runoff by R/S analysis and wavelet analysis,simulates the runoff series with the partial least squares regression (PLSR) and BP neural network-partial least squares regression (BP-PLSR),and analyzes the simulation effect of runoff near peaks and abrupt points.The results show that:The abrupt points of rainfall appear in 1973,1984 and 2002;and those of runoff appear in 1977 and 1985.The Hurst index of rainfall and runoff is close to 0,indicating that there will be an anti-continuous trend in the future.The simulation effect of BP-PLSR on runoff (RMSE=92.863,NSE=0.797) is better than PLSR (RMSE=152.182,NSE=0.456),and preprocessing the original data by BP can better avoid the over-fitting and local optimization near the abrupt points.…”
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    Dynamic Response Analysis of Super Shallow-Buried Rectangular Tunnel by Sanqing Su, Tao Yin, Zhen Cao, Bin Lei, Zhao Liu, Wenxu Lin, Anyuan Kuang

    Published 2022-01-01
    “…Relying on the project of the open-cut municipal tunnel undercrossing Ankang Freight V yard, the train dynamic response and seismic response of ultrashallow-buried rectangular tunnel of the lower interchange are studied, respectively, by combining the method of field measurement and numerical simulation. …”
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  19. 19

    Metabolomic Analysis of the Chemical Composition of Chongjue Luohan Tea by QIAN Yuanfeng, YANG Gaozhong, XU Weilin, XU Guodong, DENG Huifang, LAN Bingying, LIN Zhi, LÜ Haipeng

    Published 2025-02-01
    “…To elucidate the chemical material basis of the flavor quality of Chongjue Luohan tea, four representative tea samples (Zifu, Ankang, Ping’an and Jufu teas) were analyzed by sensory evaluation and metabolomics based on ultra-high performance liquid chromatography-quadrupole-mass spectrometry (UPLC-Q-MS). …”
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