Li Xu

Description of a new clutch of Nanhsiungoolithus chuetienensis reveals possible parataxonomic affiliation of dromaeosaurid egg

Xufeng Zhu, Yu Li, Qiang Wang, Rui Qiu et autres

A new clutch of a rarely described oospecies, Nanhsiungoolithus chuetienensis is detailed in this work. The clutch contains 14 eggs radially arranged in two concentric rings, representing the most complete clutch of N. chuetienensis yet described. The morphology and microstructure of this …

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An Improved CenterNet2 Model for Long-Arm Engineering Vehicle Object Detection

Yunhao Li, Jie Hua, Zhongyuan Wang, Li Xu et autres

Because the power grid system is easily damaged by external forces from construction vehicles, performing early warning of construction vehicles through object detection is of practical significance for protecting the safety of the power grid. However, accurate detection of engineering vehicles under …

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A new anguimorph lizard from the Upper Cretaceous of Henan Province, China

Li Xu, Liping Dong, Diansong Gao, Yu Li et autres

A new genus and species of anguimorph lizard, Zhongyuanxi jiai gen. et sp. nov., is described from the Upper Cretaceous (?Maastrichtian) Qiupa Formation of Henan Province, China. Its holotype specimen is represented by a three-dimensionally preserved partial skull and is described based …

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RMP-UNet: An Efficient and Lightweight Model for Apple Leaf Disease Segmentation

Wenbo Zhao, Lisha Hu, Hongxin Wu, Jiangbo Wang et autres

As an important and nutrient-rich economic crop, apple is significantly threatened by leaf diseases, which severely impact yield, making the timely and accurate diagnosis and segmentation of these diseases crucial. Traditional segmentation models face challenges such as low segmentation accuracy and excessive …

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Triple oxygen isotope evidence for the widespread distribution of recycled sediments in the deep mantle

Guanghui Wu, Li Xu, Xiaobin Cao, Li‐Hui Chen et autres

Research Progress of Microplastic Pollution Status and Risk Assessment of Typical Rivers in China

Jie Zhang, Lei Hong, Ke Ming Wu, Qun Wang et autres

Abstract Microplastics (MPs) have received a lot of attention since they were recognized as an emerging pollutant. Rivers transport 80 % of the land’s MPs to the oceans. With so many rivers in China, the problem of MPs pollution cannot be ignored. …

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Research on Walnut (Juglans regia L.) Classification Based on Convolutional Neural Networks and Landsat-8 Remote Sensing Imagery

Jingming Wu, Li Xu, Ziyan Shi, Senwei Li et autres

The study explores the use of convolutional neural networks (CNNs) and satellite remote sensing imagery for walnut analysis in Ganquan Township, Alar City, Xinjiang. The recent growth of walnut cultivation in Xinjiang presents challenges for manual data collection, making satellite imagery and …

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Remote sensing assessment and prediction of forest vegetation carbon sequestration in the Beijing-Tianjin-Hebei urban area

Li Xu, Wang Chun-yan, ZENG Jiaji, Nianpeng He

Using chemostratigraphy and biostratigraphy methods to define the unconformity underlying the Upper Ordovician Pagoda Formation in the Upper Yangtze Platform

Xueying Ma, Shenghui Deng, Yuanzheng Lu, Ru Fan et autres

The discovery of hydrocarbon in the Pagoda Formation in South China has received attention from the petroleum industry. This research paper identifies the discontinuity surface underlying the Pagoda Formation. The Upper Ordovician strata were correlated in different regions using the conodont biostratigraphy, …

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The Clay Mineralogy and Geochemistry of Sediments in the Beibu Gulf, South China Sea: A Record of the Holocene Sedimentary Environmental Change

Yao Guan, Yuxi Chen, Xiaoming Sun, Li Xu et autres

In this study, we analyzed the clay mineralogy and geochemistry of surface and drill core samples from the northeastern Beibu Gulf in order to unravel the sediment provenance of, and factors controlling, the sedimentary environment. The main clay mineral assemblage in the …

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Fe-Cu-Zn Isotopic Compositions in Polymetallic Sulfides from Hydrothermal Fields in the Ultraslow-Spreading Southwest Indian Ridge and Geological Inferences

Yan Wang, Zhongwei Wu, Yi Huang, Xiaoming Sun et autres

Submarine hydrothermal sulfides from the ultraslow-spreading Southwest Indian Ridge (SWIR) were sampled from three hydrothermal fields, and the Fe-Cu-Zn isotopic compositions were analyzed in this study. The Fe isotopes ranged from −0.011‰ to −1.333‰. We believe the processes controlling the Fe isotope …

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Evolution of the Chenglingji–Datong Channel in the Middle and Lower Reaches of the Yangtze River and Its Drivers

Xiaoai Dai, Wenyu Li, Shijin Chen, Jianwen Zeng et autres

In recent years, the water–sand composition of the Yangtze River channel has changed due to the influence of human factors, especially the construction of water reservoirs such as the Three Gorges Project. Changing water–sand conditions have a long-term impact on the shaping …

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