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Against the backdrop of cap-and-trade regulations, we construct a low-carbon supply chain in which a seller holds the manufacturer's equity. We investigate the impact of the seller's equity holding and the cap-and-trade regulations on the supply chain members' optimal decisions, profits and coordination in the cases of information symmetry and asymmetry. We find that, regardless of whether there is information asymmetry or symmetry, the manufacturer always benefits from an equity holding, while the seller can only earn higher profits through equity holding if the percentage of equity holding and the level of consumer low-carbon awareness are both sufficiently high. Both the seller and the manufacturer prefer the information asymmetry scenario when the manufacturer's efficiency in emission reduction is below a particular threshold. In addition, equity holding can incentivize the manufacturer to share its information with the seller. Equity holding is beneficial for emission reduction and market demand but is not always beneficial for improving the supply chain's total profit and reducing the supply chain's total carbon emissions. Finally, with a transfer payment contract, a decentralized supply chain can obtain the same optimal profits as in the centralized supply chain scenario, and both the manufacturer and seller can earn higher profits than before. [ABSTRACT FROM AUTHOR]

Selenium nanoparticles (SeNPs) are of interest for their versatility and low toxicity, but bare SeNPs are unstable and tend to aggregate and precipitate as black elemental Se, which limits the application of SeNPs. This study evaluated the physicochemical properties, physical stability, antioxidant activities and cytotoxicity of SeNPs stabilized by Grifola frondosa polysaccharides (GFPs) and GFPs-gallic acid conjugates (GFPs-GA). The results showed that the particle size (PZ), polymer index (PDI) and zeta potential (ZP) of the GFPs-SeNPs and GFPs-GA-SeNPs were 58.72 ± 0.53 nm, 0.11, -8.36 ± 0.21 mV and 61.80 ± 0.16 nm, 0.12, -9.37 ± 0.13 mV, respectively. Besides, the GFPs-SeNPs and GFPs-GA-SeNPs remained stable when stored at 4 °C for 70 days in darkness. SeNPs stabilized with GFPs have improved the antioxidant activity and selective toxicity to tumour cells. Interestingly, SeNPs stabilized with GFPs-GA further enhanced these biological activities. This work provided a simple and effective method to construct well-dispersed SeNPs in aqueous systems, demonstrating the important roles of GFPs and GFPs-GA in the size control, dispersion and stabilization of SeNPs. The prepared GFPs-SeNPs and GFPs-GA-SeNPs can serve as good selenium supplements and have potential prospects for antioxidant activity and tumour inhibition., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)

Background: Recent years have seen an increase in school refusal behavior among adolescents, potentially due to factors like excessive short-form video viewing, bullying, and school anxiety. Limited research has investigated how these factors contribute to school refusal behavior. This study used random forest regression, path analysis, and network analysis to identify key variables and pathways leading to school refusal behavior., Methods: In this cross-sectional questionnaire-based study, 2,056 (996 male, 1,060 female, mean age: 14.79 ± 1.24 years) middle and senior high school students were asked to complete the School Refusal Behavior Assessment questionnaire to assess school refusal behavior features, the Excessive Short-Form Video Viewing Scale as well as self-reported viewing times during leisure days to assess excessive short-form video viewing, the SNAP-IV Rating Scale to assess the severity of inattention symptoms, and the self-administered questionnaires to assess experiences of being bullied and school anxiety., Results: The prevalence of school refusal behavior in the surveyed adolescents was found to be 31.9% [95% confidence interval (CI): 29.8-33.9%]. In terms of significance, the severity of inattention symptoms exhibited the greatest predictive power, while excessive short-form video viewing accounted for the most variance. Path analysis revealed that excessive short-form video viewing not only directly affects school refusal behavior features but also does so indirectly through severity of inattention symptoms and school anxiety. Key bridge factors in this pathway include intense fear and anxiety associated with school attendance, manifesting as somatic symptoms and avoidance behaviors., Conclusion: The findings indicate that not only does excessive short-form video viewing directly influence school refusal behavior features in adolescents, but it also indirectly impacts these features through mechanisms involving severity of inattention symptoms and school anxiety. The bridge factors highlight potential targets for interventions among the SRB features and predictors., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Du, Wang, Wang, Liu, Li, Lv, Peng, Chang, Li, Liu, Liu, Yu and Li.)