Search Results - Chao Li

Let A be a unital ∗-algebra with the unit I and ZSA be the symmetric center of A. Assume that A contains a nontrivial projection P such that AAP=0 implies A=0 and AAI−P=0 implies A=0. In this paper, we proved that if a map φ:A⟶A satisfies φA,B∗=−φB,A∗ for all A,B∈A, then there exists a map f:A⟶ZSA s...

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We address the optimal transmission of LED-based visible light communication (VLC) system using direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) modulation and avalanche photodiode (APD) receiver. The peak-to-average-power ratio (PAPR) characteristic of O-OFDM sign...

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Japan’s economic landscape is undergoing profound transformations due to shifting demographic trends, including population decline, aging, and urban-rural disparities. This study applies advanced machine learning techniques and stepwise updating methodologies to predict city-level taxpayer numbers a...

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ObjectiveTo investigate the impact of high myopia on the surgical dose–response in unilateral recession and resection (R&R) surgery for exotropia.MethodsA retrospective analysis was conducted on 101 Chinese patients who underwent unilateral R&R surgery for concomitant exotropia betwe...

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IntroductionIn this study, we used an approach by conjugating Fondaparinux Sodium (FS) with selected drugs to generate proteolysis-targeting chimeras (PROTACs).MethodsBy applying bioprocess engineering principles, the direct amidation reaction was optimized –through precise control of pH, substrate...

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The Yellow River is a renowned sediment-laden river and analyzing its water–sediment evolution characteristics and trends is critical for rational water resource utilization and water security. Using annual runoff and sediment transport data from Toudaoguai Hydrological Station (1960–2019), Mann–Ken...

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Against the backdrop of increasing urban population and continuous expansion of urban scales, achieving “people-centered” urban sustainable development, namely building livable and sustainable cities, faces formidable challenges. Under the shared global vision of achieving the 2030 Sustainable Devel...

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The composite geomembrane-soil-bentonite (CGSB) cutoff wall is one of the most effective barriers to prevent pollutant transport in groundwater. However, geomembranes may have defects during construction, significantly increasing the risk of pollutant leakage. Currently, little is known about pollut...

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Astrocytic tumors are the most common neuroepithelial neoplasms with high relapse rate after surgery. Understanding the molecular mechanisms for astrocytic tumorigenesis and progression will lead to early diagnosis and effective treatment of astrocytic tumors. The DEK mRNA and protein expression in...

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Marine cold-spells (MCSs), the cold ocean temperature extremes as the counterpart to marine heatwaves (MHWs), may have brutal impacts on marine ecosystems and fisheries. However, recent MCS-related researches mainly focused on the ocean surface, while the character of bottom MCSs (BMCSs) remains unc...

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A multi-layer feature optimization Transformer-based tooth position prediction method is proposed to address the problems of difficult access to high-precision medical data and the difficulty of capturing and representing hierarchical features and spatial relationships among teeth by current methods...

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Swainsonine (SW) is an indolizidine alkaloid first discovered in Swainsona canescens. This study explored the effects of SW on mouse embryo fibroblast NIH-3T3 cell proliferation and collagen synthesis, as well as potential molecule mechanisms. We discovered that SW exposure lowered the viability and...

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The tension-compression asymmetry presents notable challenges for the application of magnesium alloys in many fields. In this study, the solid-solution treated Mg-8.5Gd-4.5Y-0.8Zn-0.4Zr alloy's tension-compression asymmetry was examined using optical microscope (OM), x-ray diffraction (XRD), vi...

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Synthetic aperture radar (SAR) image target recognition has important application values in security reconnaissance and disaster monitoring. However, due to speckle noise and target orientation sensitivity in SAR images, traditional spatial domain recognition methods face challenges in accuracy and...

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Previous studies have demonstrated that the surge in jacking force during the Guanjingkou project is caused by the contact conditions of the debris bentonite slurry outside the pipe. Therefore, this paper further systematically investigates the influence of different debris slurry mass ratios (SLRs)...

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Objective To explore the influence related factors of endoscopic assistant in gasless transaxillary endoscopic thyroidectomy by using machine learning and nomogram, and construct an endoscopic assistant system.Methods A skilled endoscopic assistant(Group A, n = 50)and an unskilled endoscopic assista...

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This study aimed to optimize the enzyme-assisted extraction of polysaccharides (RTFPs) from <i>Rosa roxburghii</i> fruit using response surface methodology. Under the optimal extraction conditions, the yield of RTFPs reached 14.02%, which was close to the predicted value of 13.96%. The p...

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Abstract Fault detection and identification are pivotal in seismic interpretation, benefitting reservoir characterization and hydrocarbon exploration. Classic fault segmentation methods are mainly based on seismic attributes. With the rapid development of computational power, numerous deep learning...

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Based on a self-developed abrasive water jet (AWJ) descaling test bench, the effects of process parameters on surface roughness, plastic deformation, material erosion, and microhardness of hot-rolled 304 stainless steel were investigated. The results show that the AWJ descaling process changes the a...

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