Search Results - Xu Chen

Previous research on the jumping structures of insects with strong leaping abilities mainly focused on overall jumping mechanisms. Our study reveals that the unilateral jumping structures (UJSs) of <i>L. delicatula</i> has relative functional autonomy. The UJSs consist of three distinct...

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ObjectiveTo analyze the trends in incidence and mortality of nasopharyngeal cancer (NPC) in China and its age-period-cohort effect, providing evidence for developing prevention and control strategies for NPC.MethodsNPC data were obtained from the Chinese Cancer Registry Annual Reports covering the p...

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ABSTRACT Lung abscess is a common disease in respiratory medicine, which is a suppurative lesion caused by various pathogens, and microbiological examination is crucial for the treatment of lung abscess. Due to the widespread use of antibiotics, it is difficult to obtain reliable microbiological evi...

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Previous studies on deviant behaviors in digital environments have predominantly focused on the concept of cyber deviance, online deviance and online deviant behavior, a broad behavioral framework encompassing diverse and varied actions. However, existing research has not systematically classified t...

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In order to understand the microbial community composition and the evolution of volatile flavor substances during the fermentation process of grass carp with rice wine less and to explore the possibility of using rice wine mash instead of rice wine lees for the fermentation of grass carp, high-throu...

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BackgroundIschemic stroke (IS) is a limited ischemic necrosis or softening of brain tissue caused by impaired blood supply to the brain, ischemia, and hypoxia, ultimately leading to various neurological dysfunctions. In recent years, with the continuous development of imaging technology, diffusion t...

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Abdominal organ segmentation in CT images is crucial for accurate diagnosis, treatment planning, and condition monitoring. However, the annotation process is often hindered by challenges such as low contrast, artifacts, and complex organ structures. While unsupervised domain adaptation (UDA) has sho...

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Quantum mechanics enables the generation of genuine randomness through its intrinsic indeterminacy. In device-independent (DI) and semi-device-independent (SDI) frameworks, randomness generation protocols can further ensure that the output remains secure and unaffected by internal device imperfectio...

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The detection efficiency evaluation of sonars is crucial for optimizing task planning and resource scheduling. The existing static evaluation methods based on single indicators face significant challenges. First, static modeling has difficulty coping with complex scenes where the relative situation...

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The remote sensing inversion of internal solitary waves (ISWs) enables the retrieval of ISW parameters and facilitates the analysis of their spatial variability. In this study, we utilize continuous optical imagery from the FY-4B satellite to extract real-time ISW propagation speeds throughout their...

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Natural rubber (NR) is an irreplaceable biopolymer of economic and strategic importance owing to its unique physical and chemical properties. The Pará rubber tree (Hevea brasiliensis (Willd. ex A. Juss.) Müll. Arg.) is currently the exclusive commercial source of NR, and it is primarily grown in pla...

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Abstract Loss or downregulation of major histocompatibility complex (MHC) molecules represents a key mechanism by which tumours escape immune recognition and acquire resistance to immunotherapeutic interventions. This review focuses on the central regulatory pathways. These includes transcriptional...

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Accurate multi-energy load forecasting is a prerequisite for on-demand energy supply in integrated energy systems. However, due to differences in response characteristics and load patterns among electrical, heating, and cooling loads, multi-energy load forecasting faces the challenges of heterogeneo...

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Theoretically, the Yarkovsky–O’Keefe–Radzievskii–Paddack (YORP) effect induced by thermal reemission from asteroid surfaces can either accelerate or decelerate their rotation. However, in the past decade or so, 12 asteroids confirmed to exhibit the YORP effect all show spinning-up behavior, raising...

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Aiming at the problems of the joint debugging test of optical fiber differential protection, the two terminal testers can not achieve synchronous control, and carry out the fault test of both sides and automatic test of ratio braking characteristics. By using PTP synchronization technology, the dist...

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TiN hard films are the basis of many existing multi - component nitride hard films. The N/Ti atomic ratio has important influences on TiN hard films. Based on the preparation process methods of TiN hard films, the influencing factors and control ways of the change of N content in the films were disc...

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Compressed Air Energy Storage (CAES) is a long-time electricity storage technology, whereas the low efficiency restricts its popularization. Recycling waste heat from interstage coolers can enhance performance of CAES, and organic Rankine cycle (ORC) shows good potential. Interstage coolers have mul...

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Abstract Human‐induced increase in atmospheric nitrogen (N) deposition has decreased species diversity at the local scale (α diversity) over global grasslands. However, whether and how biodiversity at the larger spatial scale (γ diversity) responds to N deposition remains an open question. As γ dive...

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The traditional finite element method deals with the temperature field around the cooling tube due to the computational efficiency problems caused by grid division and the uncertainty of the convective heat transfer coefficient, resulting in inaccurate calculation results around the cooling tube. We...

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