Search Results - Chen Shi

In machine learning-based fractional cover estimation, the fractional cover distribution in training samples critically influences model construction and, consequently the accuracy of the estimations. While some studies have descriptively compared the accuracies of machine learning-based estimations...

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In order to study the influence of the coupling coils on the transmission efficiency in wireless power transmission system with low-frequency excitation source, the dual software co-simulation method is used to analyze the magnetic field distribution under different placement modes of the electromag...

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This study was conducted to investigate the effect of chromium picolinate on performance and carcass characteristics in growing-finishing pigs.144 pigs were randomly allotted to three treatments. There were 48 pigs in each treatment with three replicate pens of 16 pigs. The pigs were fed the diets s...

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Electrodes with high activation efficiency and stability are critical for the electrochemical activation of persulfate. In this study, the effective degradation of acid orange 74 (AO 74) was achieved using the electrochemically activated peroxydisulfate (PDS) with a Ag nanoparticle–modified carbon p...

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Newly built microgrids lack historical operation data, making it challenging to predict renewable power output accurately using conventional data-driven methods, which in turn affects the accuracy of scheduling plans. To address this problem, an optimal scheduling method for newly built microgrids i...

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Loess, predominantly distributed in arid and semi-arid regions of central and western China, exhibits low shear strength and structural instability, rendering it prone to geological hazards such as landslides and collapses, which pose significant threats to local infrastructure and safety. This stud...

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In recent years, the transverse mode instability (TMI) has been a main limiting factor of average power scalability of high-power fiber lasers with near-diffraction-limited beam quality. A number of strategies in experimental or theoretical scopes have been proposed to mitigate the TMI, especially i...

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Background: This study developed an explainable machine learning model for baseline internal mammary lymph node metastasis (IMNM) in breast cancer patients. Materials and methods: This study included three cohorts: a derivation cohort (n = 1997) from Peking University Cancer Hospital, a temporal tes...

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In this paper, we construct a high power monolithic fiber laser oscillator based on a commercial ytterbium-doped fiber with core&#x002F;inner cladding diameter of 25&#x002F;400&#x00A0;<italic>&#x03BC;</italic>m. The output performances of the fiber oscillator are experime...

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Tight filtering and fiber Kerr effect both cause severe pattern-dependent distortions that need to be combated to achieve higher spectral efficiency (SE), larger capacity and greater achievable transmission distance in the next generation wavelength division multiplex (WDM) optical transmission syst...

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Immunotherapy has demonstrated potential in treating various malignant tumors, but its efficacy in pancreatic cancer (PC) remains limited, possibly due to the dense stromal components and immunosuppressive microenvironment of PC. Focal adhesion kinase (FAK), a non-receptor tyrosine kinase, plays a c...

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Abstract Thiourea derivatives are typical additives that exert different steric hindrance effects on the tensile strength of electrolytic copper foil (ECF). However, the underlying mechanisms remain unclear. Herein, thioureas with methyl, isopropyl, tertbutyl substituents, and unsubstituted thiourea...

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Tapered Yb-doped fiber (T-YDF) can balance the suppression of transverse mode instability (TMI) and stimulated Raman scattering (SRS) in high power fiber lasers. In this work, we have constructed an all-fiberized master oscillator power amplifier emitting at the central wavelength of 1050 nm based o...

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Fiber laser has been developed to the point where the average power scaling can reach several kilowatts readily for oscillators and more for amplifiers. In the meanwhile, the thermal effects inside the fiber laser also become prominent. Temperature rise of the fiber core caused by thermal effects ha...

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In this paper, we have constructed an all-fiberized bi-directional pumping fiber amplifier. The output time domain signals and limitations of copumping and counterpumping schemes were experimentally investigated. The power scaling of copumping and counterpumping scheme is restricted by stimulated Ra...

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Summary: Skeletal muscle organoids (SKMOs), neuromuscular organoids (NMOs), and assembloids have emerged as powerful in vitro models that simulate the intricate cellular interactions between muscle and nerve, offering a promising approach to study function, development, and disease at the neuromuscu...

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<h4>Background</h4>We performed a systematic review and meta-analysis to address the (added) value of intraoperative 5-aminolevulinic acid (5-ALA)-guided resection of high-grade malignant gliomas compared with conventional neuronavigation-guided resection, with respect to diagnostic accu...

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Abstract The chemokine CXCL6 is identified as a pivotal regulator of biological processes across multiple malignancies. However, its function in cholangiocarcinoma (CCA) is underexplored. Tumor profiling for CXCL6 is performed using a public database. Both in vitro and in vivo experiments are utiliz...

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