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To better study the chloride ion migration in concrete with fly ash or ground granulated blast furnace slag under low fatigue load, a Caputo time fractional-order chloride diffusion model is developed in this paper. The model, grounded in Fick's second law with a fractional-order derivative, employs an implicit numerical method for discretization, resulting in a fractional-order numerical scheme. The stability and convergence of the scheme are rigorously proven within the paper. The model's unknown parameters are estimated using genetic algorithm with a grid method. To validate the model's effectiveness, its numerical solution is juxtaposed with experimental results from chloride erosion studies. Furthermore, the fitting efficacy of the Caputo time fractional-order numerical scheme is compared with that of the classical Fick's second law numerical scheme and analytical solution. The research findings demonstrate that the fractional-order numerical scheme can more accurately simulate the chloride concentration in concrete containing fly ash or slag. Additionally, the model shows promise in predicting the service life of fly ash or slag concrete. [ABSTRACT FROM AUTHOR]

All-inorganic perovskite quantum dots (CsPbX3 QDs) (X = Cl, Br, I) have the advantages of adjustable emission position, narrow emission spectrum, high fluorescence quantum efficiency (PLQY), easy preparation, and elevated defect tolerance; therefore, they are widely used in optoelectronic devices, such as solar cells, light-emitting diodes, and lasers. However, their stability still constrains their development due to their intrinsic crystal structure, ionic exchange of surface ligands, and exceptional sensitivity to environmental factors, such as light, water, oxygen, and heat. Therefore, in this paper, we investigate the stability improvement of CsPbX3 QDs and apply fabricated high-efficiency, stable perovskite QDs to solar cells to improve the performance of the cells further. In this paper, we focus on CsPbBr3 QDs with intrinsic extreme stability and optimize CsPbBr3 QDs using strategies, such as Mn+ doping, ligand regulation, and polymer encapsulation, which can improve optical properties while ensuring their stability. The test results show that the above five methods can improve the strength and luminescence performance of QDs, with the best stability achieved when PMMA encapsulates QDs with a ratio of PMMA = 2:1 and PLQY increases from 60.2% to 90.1%. [ABSTRACT FROM AUTHOR]

Background: Identifying the definition of "being a good parent" facilitates the understanding of parents' personal beliefs and deeds regarding their ill child., Objective: The aim of this study was to explore the concept of "being a good parent to my ill child" during pediatric cancer treatment from the perspective of Chinese children, parents, and providers., Methods: A descriptive qualitative study was conducted with 6 children, 18 parents, 5 doctors, 19 nurses, and 3 social workers by semistructured interviews at 3 Chinese hospitals., Results: Except for "letting the Lord lead," 7 themes from the original conceptual model were validated, for example, "being there for my child" (n = 51, 100.0%); "doing right by my child" (n = 38, 74.5%), "being an advocate for my child" (n = 27, 52.9%), "conveying love to my child" (n = 26, 51.0%), "making my child healthy" (n = 18, 35.3%), "being a good life example" (n = 13, 25.5%), and "not allowing suffering" (n = 13, 25.5%). A new theme, "rebuilding myself" (n = 39, 76.5%), emerged in the Chinese context. "Being a good parent to my ill child" is perceived differently among stakeholders. Healthcare professionals' facilitation to fulfill the concept included "recognizing the individualized good-parent definition," "providing best available care" and "establishing a supportive environment.", Conclusion: "Being a good parent to my ill child" is meaningfully expressed by Chinese parents and recognized by children and providers during pediatric cancer treatment., Implications for Practice: It is important to support parents in conveying their internal good parent definition and sharing it with stakeholders. Attention should be paid to related cultural influencers, a supportive family-friendly environment, and shared decision making involving the child's voice., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)

Background: Evidence suggests that digital health interventions are feasible and acceptable in pediatric cancer survivors. Efforts to synthesize user experiences, however, are limited., Objective: The aim of this study was to systematically identify, appraise, and synthesize qualitative evidence on the user experiences of pediatric cancer survivors participating in digital health interventions., Methods: We searched 4 databases to identify studies with qualitative data of the digital health intervention user experiences from childhood, adolescent, and young adult pediatric cancer survivors, published from the databases' inception to January 31, 2020. Studies that met inclusion criteria were selected and reviewed for quality. The extracted data were analyzed by thematic synthesis., Results: Sixteen articles met the inclusion criteria. Two analytic themes emerged, each with 3 descriptive themes: (1) the favorable experience of using digital health interventions, including "knowing about oneself and one's cancer," "connecting with others in a trustworthy and safe way," and "getting empowered and rewarded"; and (2) the challenges of using digital health interventions, including "challenges from the content of the program," "technology challenges," and "user challenges.", Conclusions: This systematic review supports the value of digital health interventions as an acceptable and convenient approach for delivering care to pediatric cancer survivors. It is essential to understand the users' positive experiences and challenges to customize interventions and achieve positive health outcomes., Implications for Practice: Nurses can contribute to the development and implementation of digital health interventions for pediatric cancer survivors through advocacy, navigation, feedback, and multidisciplinary collaboration. We recommended system-level support in modifying and developing relevant workflows or practice guidelines for implementation., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2020 Wolters Kluwer Health, Inc. All rights reserved.)