檢索結果 - Feng Xu

The advent of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the subsequent coronavirus disease 2019 (COVID-19) pandemic have posed a serious threat to human health and society [...]

This paper studied the effects of crop insurance on agricultural output with an economic growth model. Based on Ramsey-Cass-Koopmans (RCK) model, a basic model of agriculture economic growth was developed. Extending the basic model to incorporate uncertainty and insurance mechanism, a risk model and...

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Fine-grained recognition tasks face significant challenges in differentiating subtle, class-specific details against cluttered backgrounds. This paper presents an efficient architecture built upon the Res2Net backbone, significantly enhanced by a dynamic Sparse Attention mechanism. The core approach...

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Forest land plays a vital role as a terrestrial carbon sink. Urbanization, particularly the conversion of forest land into agricultural and construction areas, has significantly affected the carbon sink capacity of forests. The protection of carbon sinks in forest land has become a critical issue in...

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Objective‍　‍To investigate the protective effects of Qiji Special Dietary Food on exercise-induced myocardial injury in mice. Methods‍　‍An exercise-induced myocardial injury model was established using a treadmill running protocol, and at the same time, the modeled mice were administered Qiji Specia...

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To address the control problem of high-speed trains operating under virtual coupling in actual communication environments, an event-triggered multi-trains cooperative tracking predictive control method is proposed considering the limited available resources of the system. Firstly, a multi-trains tra...

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BackgroundThe precise relationship between bone mineral density (BMD) and all-cause mortality in older adults remains incompletely understood. This study aimed to investigate the association between BMD and all-cause mortality and to explore the mediating role of body mass index (BMI) in adults aged...

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BackgroundOcclusion of the artery of Percheron (AOP), a rare variant of the paramedian thalamic artery, leads to bilateral paramedian thalamic infarction with or without midbrain involvement. AOP following surgical clipping of anterior circulation aneurysms has not been documented in the literature....

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We report a demonstration of a wide field-of-view (FOV) imaging with a wavefront coded diffractive photon sieves. In conventional diffractive photon sieves (or other diffractive optical elements), clear imaging can only be achieved within near-zero FOV due to the strict interference conditions impos...

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Abstract This study aims to compare the efficiencies of three noninvasive technologies in monitoring the perioperative hemodynamics of children with congenital heart disease (CHD) including ventricular septal defects with or without atrial septal defects. Three noninvasive technologies included tran...

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Impact and protection are hot topics of concern in modern military and civilian fields. However, existing research focuses more on high-speed, high-frequency impact, explosion, and other loading conditions, while studies on the protective mechanisms and stress-deformation processes of materials duri...

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IntroductionThe Gleditsia sinensis Lam. polysaccharide gum contained in G. sinensis seeds is not only an additive specified in national food standards, but also an important strategic resource for industrial raw materials such as oil and natural gas in China.The main component of G. sinensis polysac...

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ABSTRACT Objective This study aimed to investigate the predictive value of the radiographic tumor burden score (TBS) for long‐term outcomes in hepatocellular carcinoma (HCC) patients meeting Milan criteria after microwave ablation (MWA) and to delineate its significance in guiding treatment planning...

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<h4>Objective</h4>This meta-analysis aimed to investigate the efficacy and safety of plastic wrap applied after birth and during NICU in preterm infants for prevention of heat loss in preterm infants.<h4>Study methods</h4>The Medline (1950 to August 2015), the Cochrane Centra...

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PurposeThis study aims to generate and elucidate the latest perspectives on the application of artificial intelligence (AI) in ophthalmology using bibliometric methods. By analyzing literature from the past 5 years (2020–2024), we seek to outline the development trends of this technology, provide gu...

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Electron microscopic examination of renal biopsies is crucial for the diagnosis of kidney disease. In this study, we present an optimized protocol that significantly reduces processing time to 19.5 h, compared to 120 h with conventional methods, while preserving ultrastructural quality in 55 renal b...

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After the dual-arm space robot captures a noncooperative target, a closed-chain multibody system is formed, making dynamic modeling and detumbling trajectory planning particularly challenging. This paper proposes a novel trajectory planning strategy that guides the combined system into a uniaxial ro...

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Based on the Rayleigh scattering theory, the radiation forces and the trap stiffness on Rayleigh dielectric sphere induced by a focused Laguerre&#x2013;Gaussian correlated Schell-model (LGCSM) beam are theoretically studied. It is found that by choosing the appropriate transverse coherence width...

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Salt stress contains osmotic and ionic stress, while iso-osmotic polyethylene glycol (PEG) has only osmotic stress. This study aimed to compare the different effects on the activity of H+-ATPase, proton pump and Na+/H+ antiport in Malus seedlings between osmotic and ionic stress. Species of salt tol...

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A quantum dots optical fiber (QDOF) sensor is proposed for temperature sensing in this paper. The sensor is fabricated by the drop-on-demand inkjet printing technology. By controlling the diameter of droplet, the spacing between droplets and the number of printed layers, the QDOF is printed on the p...

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