Résultats de la recherche - Li Cheng

Given the need to guarantee sustainable, high-quality preschool education and considering preschool teachers’ central role in children’s learning and growth, the effective development of preschool teachers requires serious attention. This study explored the current intention to stay and the factors...

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In order to improve the detection accuracy of SSD (Single Shot MultiBox Detector), an A-SSD (Anchor-object SSD) object detection algorithm based on Anchor-object matching is proposed. In the feature extraction part of the algorithm, parallel convolution and hole convolution are used to form the rece...

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Workshop staff detection is to use the target detection technology to detect the staff in the corresponding area of the factory production workshop, to ensue the life, health and safety of the staff in the production workshop. In this paper, the improved dark channel priority processing strategy is...

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Aiming at the multiobjective cloud resource scheduling problem, with the goal of optimizing the total completion time and total execution cost of the task, a fuzzy cloud resource scheduling model is established using the method of fuzzy mathematics.Utilizing the advantage of the covariance matrix t...

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<b>Background:</b> Acute respiratory distress syndrome (ARDS) is a high-mortality disease strongly associated with an imbalance in the inflammatory response. The ratio of helper T 17 (Th17) cells to regulatory T (Treg) cells is significantly correlated with prognosis and outcomes in ARDS...

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For rapid and sensitive detection of pathogenic bacterium Pseudomonas aeruginosa, the whole-cell systematic evolution of ligands by exponential enrichment (SELEX) technique was used to select single-stranded DNA (ssDNA) aptamers specific for P. aeruginosa. After 15 rounds of enrichment, 30 ssDNA seq...

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We develop a two-step infrared (IR) femtosecond fiber laser exposure technique to flexibly fabricate long period fiber gratings (LPFGs) with a high peak band-rejection efficiency of 35.4&#x00A0;dB, insertion loss of 4.36&#x00A0;dB, and 3&#x00A0;dB bandwidth of 13&#x00A0;nm. First, we...

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In recent years, with the rapid advancement of 3D printing technology, its applications have expanded across numerous fields. Notably, the fabrication of scaffolds using 3D printing has emerged as a major research focus. Researchers are investigating the properties of various printing materials and...

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The effect of seed soaking with zinc sulfate on growth and physiological characteristics of rice seedlings was studied using seeds of IR8192 and BY typed rice as subjects treated with different concentrations of zinc sulfate (0, 0.0005%, 0.001%, 0.005%, 0.01%, 0.05%, 0.10%, 0.15%, 0.25%). The result...

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Association rule mining is mainly used to discover knowledge hidden in the data. Weighted association rule mining can mine rules with different importance of the project more effectively. There is a certain subjective arbitrariness in the method of artificial weight assignment, existing the problem...

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In order to improve the corrosion protection performance of cold sprayed pure aluminum coating on the surface of magnesium - lithium alloy, a thin pure aluminum coating was first prepared on the surface of Mg - Li alloy LA43M by cold spraying technology, and then post shot peening treatment was empl...

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Six × his-hGM-CSF fusion gene was inserted in silkworm baculovirus transfer vector pBacPAK8 to construct the recombinant transfer vector pBacPAKHis-GM-CSF. The recombinant transfer vector DNA and linear virus Bm-BacPAK6 DNA were co-transfected into BmN cells. The homologous recombination occurred in...

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ABSTRACT The development of smart materials capable of underwater self‐healing, mechanical robustness and damage‐healing sensing attributes holds great promise for applications in marine energy exploitation. However, achieving excellent humidity self‐healing, superior adhesion, and effective damage...

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Objective To evaluate the application value of ultrasonic viscoelastic imaging technology in differentia-ting benign and malignant breast tumors. Methods A total of 717 patients with breast tumors confirmed by surgical patho-logy were consecutively enrolled at Ruijin Hospital, Shanghai Jiao Tong Uni...

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In this study, the effects of pregelatinization on the physicochemical properties of corn grits and the quality of cooked waxy corn wrapped in plant leaves were investigated. This investigation was conducted to address the issues of partial gelatinization and poor texture in corn grits when applied...

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The two-stage dough mixing process was innovated to improve the qualities of bread made from potato flour (PF) and wheat flour at a ratio of 1:1 (w/w). The final dough was first prepared from wheat flour before being added with PF. The effects of the method on enhancing the dough qualities were veri...

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To investigate the interaction effects of resting times (0, 6, and 12 h) and NaHCO₃ concentrations (0, 2, 4, and 6 g/kg) on chicken myofibrillar protein (CMP), this study analyzed the changes in solubility, active sulfhydryl groups, rheological behavior, fluorescence, and gel...

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