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Yunrui Yang, Erfu Dai, Jun Yin, Lizhi Jia, Peng Zhang and Jianguo Sun
Based on the data of 2254 daily meteorological stations in China from 1961 to 2021, this study calculated the standardized precipitation evapotranspiration index (SPEI) of the national multi-time scale by using the FAO Penman?Monteith model to quantify t...
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Qi-Ang Wang, Xin-Yu Huang, Jun-Fang Wang, Yi-Qing Ni, Sheng-Cai Ran, Jian-Peng Li and Jia Zhang
Rail corrugation is a serious problem in a railway transportation system, aggravating the operational risk and shortening the lifetime of train?track system. In order to ensure the safety and reliability of the railway system, the detection of rail corru...
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Shoubo Shang, Xiangyu Wang, Qingnan Han, Peng Jia, Feihong Yun, Jing Wen, Chao Li, Ming Ju and Liquan Wang
This paper proposes a version of the deep-sea environment simulated test system for subsea control modules to solve the problem of incomplete testing systems for electro-hydraulic subsea control modules. Based on the subsea control module test requiremen...
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Hao Qi, Shi-Jie Cao, Jia-Yue Wu, Yi-Ming Peng, Hong Nie and Xiao-Hui Wei
The tail-sitter VTOL UAV boasts not only high-speed cruising and air hovering capabilities, but also its unique tail-sitting vertical takeoff and landing and hovering attitude enable aerial operations with an exceptionally small cross-sectional area. Thi...
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Peizhao Zhong, Weiqing Jia, Wenwu Yang, Jianfei He, Erli Zhang, Dongyang Yu, Yuhang Xu, Jianpeng Chen, Feihu Peng, Guoxiang Zeng, Chen Zhang, Shiqi Zeng, Bo Gao, Haihai Pei and Zaiman Wang
The parameters of the discrete element simulation model for rice field soils serve as valuable data references for investigating the dynamic characteristics of the walking wheel of high-speed precision seeding machinery in paddy fields. The research spec...
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Shuhan Xu, Feng Wang, Yuling Ding, Wenchao Liu, Yiyu Lan, Qingqing Jia, Peng Sun and Zhimin Sha
Rice?duckweed coculturing as an advanced technique has proven effective for weed control. However, the complex environmental interactions underlying its effectiveness remain unclear. In this study, a controlled pot experiment was conducted to isolate the...
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Bingfan Wang, Zhaoyang Li, Zihan Liu, Jinwen Pang, Peng Zhang and Zhikuan Jia
Background: Traditional polyethylene film mulching is widely used in the Loess Plateau region of China to improve crop yields. However, whether long-term polyethylene film mulching can continue to ensure crop yield under future climate change conditions ...
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Zhenyu Li, Gang Wang, Shaoming Yao, Feihong Yun, Peng Jia, Chao Li and Liquan Wang
To predict the sealing performance of the subsea pipeline compression connector, a semi-analytical method is proposed and verified. The leakage condition is obtained as a function of the minimum radial deflection. The semi-analytical method consists of t...
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Peng Xu, Shanshan Jia, Dongao Li, Ould el Moctar and Changqing Jiang
Vortex-induced vibration (VIV) of bluff bodies is one type of flow-induced vibration phenomenon, and the possibility of using it to harvest hydrokinetic energy from marine currents has recently been revealed. To develop an optimal harvester, various para...
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Jia Yuan, Zhen Liu, Hua Geng, Songtao Zhang, Lihua Liang and Peng Zhao
In order to reduce the offshore wind power operation and maintenance vessel motion induced by severe sea states, a suitable stabilizer with the ship based on linear quadratic regulator strategy is proposed in this paper. First of all, the dynamics of the...
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