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Multilayer entropy-weighted TOPSIS method and its decision-making in ecological operation during the subsidence period of the Three Gorges Reservoir.
Sci Rep
January 2025
State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan, 430,072, China.
Coordinating the downstream ecological demand and the power generation demand of hydropower stations is an important task in the operation of reservoirs, and how to evaluate the ecological satisfaction of the scheduling process is a difficult problem that needs to be solved urgently. A multi-objective optimal reservoir scheduling model was constructed to coordinate the spawning flow demand of " Four Major Chinese Carps"; The model takes the maximum power generation and the maximum membership degree of downstream river ecological water demand as the objective functions, and uses the dynamic programming multi-objective solution algorithm based on penalty factors to solve the problem, and obtains the non-inferior solution set in each scenario. The multilayer entropy-weighted TOPSIS method was used to study the non-inferior solution of the multi-objective scheduling model of the Three Gorges Reservoir, and the satisfactory solution ranking of the river flow rise process, ecological flow-related requirements, and power generation water requirements was obtained under the four schemes including 4d ~ 7d, which improved the reliability of the evaluation results and made up for the shortcomings of the traditional TOPSIS method in terms of hierarchy and weight science.
View Article and Find Full Text PDFInGaN multiquantum wells-problem of carrier injection.
Sci Rep
January 2025
Institute of High Pressure Physics, PAS, Warsaw, Poland.
This study addresses the issue of effective carrier injection to quantum wells in laser diode structures. The nitride light emitting structures used in this study were fabricated by Metal-Organic Vapor Phase Epitaxy (MOVPE). We developed three distinct sets of samples, with varying quantum barrier thickness, different QWs indium composition and different position relative to the p- and n-sides of the structure.
View Article and Find Full Text PDFDevelopment of a fixed-order [Formula: see text] controller for a robust P&O-MPPT strategy to control poly-crystalline solar PV energy systems.
Sci Rep
January 2025
Department of Electrical Engineering, College of Engineering, Taif University, Taif, 21944, Saudi Arabia.
This paper presents a novel approach to modeling and controlling a solar photovoltaic conversion system(SPCS) that operates under real-time weather conditions. The primary contribution is the introduction of an uncertain model, which has not been published before, simulating the SPCS's actual functioning. The proposed robust control strategy involves two stages: first, modifying the standard Perturb and Observe (P&O) algorithm to generate an optimal reference voltage using real-time measurements of temperature, solar irradiance, and wind speed.
View Article and Find Full Text PDFUnveiling the potential role of the shock index in maternal sepsis: reality or fantasy?
J Matern Fetal Neonatal Med
December 2025
Departamento de Ginecología y Obstetricia, Fundación Valle del Lili, Cali, Colombia.
Objective: Maternal sepsis continues to be a maternal health problem associated with 75,000 deaths per year worldwide, representing a greater burden in low- and middle-income countries (LMICs). Although the Shock Index (SI) has been widely studied in postpartum hemorrhage and in non-obstetric populations, it has not yet been widely studied in sepsis. We aimed to identify the relationship between Shock Index and suspected sepsis in pregnant and postpartum patients to explore the use of Shock index in the context of maternal sepsis and its relationship with sepsis-related outcomes.
View Article and Find Full Text PDFInhibition of PDT-induced PGE2 surge for enhanced photo-immunotherapy.
Biomaterials
January 2025
College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, Zhejiang, 310058, PR China; Zhejiang-California International Nanosystems Institute, Zhejiang University, Hangzhou, 310058, PR China; Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, Zhejiang, PR China.
Nowadays, photodynamic therapy (PDT) offers a non-invasive tumor treatment with high safety profiles and minimal side effects, implying a promising clinical application for patients with malignant tumors. However, the lack of efficacy in metastasis and recurrence still notably limits its application. To solve this problem, one promising strategy is to improve the immune response activated by PDT.
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