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Lei Ma, Shaoying Ma, Guiping Chen, Xu Lu, Qiang Chai and Sheng Li
Legumes have important nutritional and economic values, but their production faces continuous cropping obstacles that seriously affect their yield formation. In order to reduce the negative impact of the continuous cropping obstacles of legumes, it is ne...
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Lei Ma, Stefan Seipel, Sven Anders Brandt and Ding Ma
Examining the complexity of urban form may help to understand human behavior in urban spaces, thereby improving the conditions for sustainable design of future cities. Metrics, such as fractal dimension, ht-index, and cumulative rate of growth (CRG) inde...
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Zhibin Qi, Ruiping Zhang, Jianqiao Ma, Xiangfei Wang, Lei Ma, Zongyu Zhao and Youqiang Wu
To study the icing flashover characteristics displayed by insulators on the roof of a high-speed train at a low-speed or static state, an environment with a low temperature and high humidity is established in the artificial climate chamber to carry out t...
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Lei Sun, Honglei An, Hongxu Ma, Qing Wei and Jialong Gao
Lower limb knee?ankle prostheses can effectively assist above-knee amputees in completing their basic daily activities. This study explored methods for estimating the joint kinematics of intelligent lower limb prostheses to better adapt them to the walki...
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Ling Zhou, Peng Yan, Yanjun Zhang, Honglei Lei, Shuren Hao, Yueqiang Ma and Shaoyou Sun
The optimization of the production scheme for enhanced geothermal systems (EGS) in geothermal fields is crucial for enhancing heat production efficiency and prolonging the lifespan of thermal reservoirs. In this study, the 4100?4300 m granite diorite str...
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Huaisheng Zhang, Yonggao Lv, Tao Zhang, Lei Zhang, Xuemei Ma, Xuesong Liu and Sheng Lian
To explore the intricate interrelationship between groundwater microbial communities and hydrochemical characteristics in the Mancheng District, Baoding City, samples from karst groundwater and porous groundwater were collected. Hydrochemical analysis an...
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Ruoyang Li, Shuping Xiong, Yinchao Che, Lei Shi, Xinming Ma and Lei Xi
Semantic segmentation algorithms leveraging deep convolutional neural networks often encounter challenges due to their extensive parameters, high computational complexity, and slow execution. To address these issues, we introduce a semantic segmentation ...
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Hao Wu, Xuewen Lei, Xiang Chen, Jianhua Shen, Xinzhi Wang and Tiantian Ma
The reclamation coral sand (CS) layer is the survival environment for island reef vegetation in the South China Sea. The root system within the CS bed draws water necessary for vegetation growth, implying that the water-retention capacity of CS plays a p...
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Shengjie Zhou, Ninglu Zhang, Zhengyi Fu, Gang Yu, Zhenhua Ma and Lei Zhao
To understand the impacts of salinity stress on the antioxidation of yellowfin tuna Thunnus albacares, 72 fishes (646.52 ± 66.32 g) were randomly divided into two treatments (32? and 29?) and sampled at four time points (0 h, 12 h, 24 h, and 48 h). The s...
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Hongli Wang, Xucheng Zhang, Guoping Zhang, Yanjie Fang, Huizhi Hou, Kangning Lei and Yifan Ma
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Demeng Zhang, Guang Zheng, Hebing Liu, Xinming Ma and Lei Xi
Chinese named entity recognition of wheat diseases and pests is an initial and key step in constructing knowledge graphs. In the field of wheat diseases and pests, there are problems, such as lack of training data, nested entities, fuzzy entity boundarie...
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Daiwei Zhang, Chunyang Ying, Lei Wu, Zhongqiu Meng, Xiaofei Wang and Youhua Ma
Timely and accurate extraction of crop planting structure information is of great importance for food security and sustainable agricultural development. However, long time series data with high spatial resolution have a much larger data volume, which ser...
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Xin Ma, Lei Zheng, Zifu Li, Lingling Zhang, Shikun Cheng and Xuemei Wang
This study explored the nitrate reduction by Al-Fe alloy. The nitrate conversions of fresh, 30-day and 90-day alloys were 78.1%, 42.8% and 9.5%, respectively. Water activation promoted the reducing ability of the alloy (98% nitrate removal), which was hi...
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Xiaogang Ma, Mengying Bian, Yang Yang, Tingting Dai, Lei Tang and Jun Wang
This article explores the impact of inlet pre-swirl on pressure pulsation in a mixed-flow centrifugal pump through a combination of numerical simulations and experimental verification. Firstly, the mixed-flow centrifugal pump?s performance was initially ...
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Lei Zhang, Jin Mu, Hongtu Ma, Guicheng Dai and Shengxi Tong
General aviation is an important branch of the aviation field. As a green energy aircraft, the electric aircraft is an important component and development direction of general aviation aircraft, and its safety is crucial. In this paper, the aerodynamic a...
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Xiaoyi Fu, Lei Liang, Wenlai Ma, Hutao Cui and Yang Zhao
Designing spacecraft involves a careful equilibrium to avoid overengineering or underdesigning, which underscores the importance of employing thermal uncertainty analysis. A key part of this analysis is modeling thermal conditions, but this is often a co...
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Huaibo Yao, Yixin Huang, Wenlai Ma, Lei Liang and Yang Zhao
Joints are widely used in large deployable structures but show semi-rigidity due to performance degradation and some nonlinear factors affecting the structure?s dynamic characteristics. This paper investigates the influence of semi-rigid joints on the ch...
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Chuanwei Wang, Saisai Wang, Hongwei Ma, Heng Zhang, Xusheng Xue, Haibo Tian and Lei Zhang
Tracked inspection robots possess prominent advantages in dealing with severe environment rescue, safety inspection, and other important tasks, and have been used widely. However, tracked robots are affected by skidding and slipping, so it is difficult t...
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Long Qian, Yuanzhou Zheng, Lei Li, Yong Ma, Chunhui Zhou and Dongfang Zhang
Ship position prediction plays a key role in the early warning and safety of inland waters and maritime navigation. Ship pilots must have in-depth knowledge of the future position of their ship and target ship in a specific time period when maneuvering t...
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Lei Fu, Zepeng Ma, Debin Wu, Jia Liu, Fang Xu, Qi Zhong and Tiantian Zhu
Rolling bearing is a pivotal component for rotating equipment, which has high failure rates. Bearing failure can cause the equipment to lose control or even casualties, resulting in significant economic losses. This article diagnoses the bearings in vari...
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