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6th International Conference on Blockchain and Trustworthy Systems, BlockSys 2024

作者： Qiu, Tao Lou, Xi Zhang, Ke Huang, Xiaoyan Wu, Fan School of information and communication Engineering University of Electronic Science and Technology of China Chengdu610000 China

ISBN: (纸本)9789819614134

The rise of intelligent vehicular applications has amplified the demand for high-performance computing, addressing the constraints of limited onboard computational resources through Vehicular Fog Computing (VFC). VFC offers low latency and swift response times but also presents security challenges. Blockchain technology can secure transactions in VFC, but it consumes significant resources. In addition, inefficient task scheduling strategies can increase task latency, reduce service quality, and raise the number of blockchain transactions, worsening resource consumption and straining the Internet of Vehicles (IoV) systems. To this end, we propose IADE-DPSAC, a task scheduling strategy based on heuristic algorithms and deep reinforcement learning, which jointly optimizes fog computing task offloading and resource allocation, significantly improving computational efficiency and reducing blockchain resource consumption. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Fog computing

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A Photonic Crystal Gel for Naked-Eye Detection of Uric Acid with High Sensitivity and Specificity

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 2024年第24期63卷 10615-10626页

作者： Yang, Li Yang, Hai-Yan Ju, Xiao-Jie Wang, Wei Liu, Zhuang Pan, Da-Wei Xie, Rui Chu, Liang-Yin Sichuan Univ Sch Chem Engn Chengdu 610065 Sichuan Peoples R China Sichuan Univ State Key Lab Polymer Mat Engn Chengdu 610065 Sichuan Peoples R China

Uric acid is a signal molecule that regulates the metabolic activities of the human body, and its abnormally high levels will result in multiple complications. However, the current methods for detecting uric acid generally require high-precision instruments and professional operation. Herein, a redox-responsive photonic crystal (PC) gel for specific detection of uric acid by visualized iridescent colors with high sensitivity is successfully developed by cross-linking N-isopropylacrylamide via both macromolecular poly(ethylene glycol) acrylamide (PEG) and N,N '-cystamine-bis-acrylamide (BAC). By adjusting the PEG and BAC content, the size and concentration of magnetite nanoparticles, and magnetic field strength, the PC gel prepared can specifically detect uric acid levels with the aid of uricase and achieve a color change from orange-red to blue. Such a PC gel has excellent repeatability, and the lowest relative error of uric acid in commercial rabbit serum between the results measured by the gel and enzyme-labeled instrument is merely 6%. This study provides an effective strategy for the visualizing of uric acid in actual urine and blood with high sensitivity and specificity.

关键词： Color Diffraction Magnetic properties Nanoparticles Quantum mechanics

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Reinforcement Learning and Its Applications in Modern Power and Energy Systems: A Review

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Journal of Modern Power Systems and Clean Energy 2020年第6期8卷 1029-1042页

作者： Di Cao Weihao Hu Junbo Zhao Guozhou Zhang Bin Zhang Zhou Liu Zhe Chen Frede Blaabjerg the Wide-area Measurement and Control Sichuan Provincial Key Laboratory School of Mechanical and Electrical EngineeringUniversity of Electronic Science and Technology of ChinaChengduChina the Department of Electrical and Computer Engineering Mississippi State UniversityStarkvilleMississippiUSA the Department of Energy Technology Aalborg UniversityAalborgDenmark

With the growing integration of distributed energy resources(DERs),flexible loads,and other emerging technologies,there are increasing complexities and uncertainties for modern power and energy *** brings great challenges to the operation and ***,with the deployment of advanced sensor and smart meters,a large number of data are generated,which brings opportunities for novel data-driven methods to deal with complicated operation and control *** them,reinforcement learning(RL)is one of the most widely promoted methods for control and optimization *** paper provides a comprehensive literature review of RL in terms of basic ideas,various types of algorithms,and their applications in power and energy *** challenges and further works are also discussed.

关键词： Reinforcement learning deep reinforcement learning power system operation and control optimization

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Flow Behavior in a Counter-Current Mini-Channel Extractor

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 2021年第50期60卷 18490-18500页

作者： Liu, Yi Zhang, Tao Lv, Li Chen, Yanxiao Tang, Shengwei Sichuan Univ MOEs Engn Res Ctr Comprehens Utilizat & Cleaning Sch Chem Engn Chengdu 610065 Peoples R China

The droplet flow behavior in a home-made liquid-liquid countercurrent mini-channel was investigated systematically. Droplet formation regimes and Sauter mean diameters of droplets were investigated experimentally. The diameter of the home-made circular mini-channel is 4 mm, and the internal diameters of the equipped nozzles are 0.11, 0.16, 0.21, 0.26, and 0.29 mm. The continuous phase is water, and the dispersed phase is a mixture of n-butanol and 30% TBP (diluted with kerosene). The formation mechanism of droplets was simulated by computational fluid dynamics with the volume of fluid method. Dripping and jetting regimes were observed from the simulation results. From the simulated streamlines, a vortex flow in aqueous liquid was found. The mass transfer between the two phases is intensified by the vortex flow. A map of droplet formation regimes was built. The formation regimes include four regions, including down-dripping region, dripping region, transition region, and jetting region. In this study, Sauter mean diameters of droplets were between 1.47 and 3.19 mm. A model was established to predict the droplet Sauter mean diameters with an average deviation of +/- 10%.

关键词： Surface tension Liquids Fluid dynamics Fluids Biotechnology

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A particle-scale insight into the face stability of shallow EPB shield tunnels in dry cobble-rich soil

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TUNNELLING AND UNDERGROUND SPACE technology 2024年 144卷

作者： Wang, Jun Lin, Guojin Tang, Rui Zhang, Yan Yao, Zhigang Feng, Kun Tian, Ning Chen, Ziquan He, Chuan Sichuan Highway Planning Survey Design & Res Inst Chengdu 610041 Peoples R China Southwest Jiaotong Univ Key Lab Transportat Tunnel Engn Minist Educ Chengdu 610031 Peoples R China Southwest Jiaotong Univ Chengdu 610031 Peoples R China Sichuan Coll Architectural Technol Deyang 618000 Peoples R China

The aim of this paper is to provide a particle-scale insight into the face stability of shallow (C/D = 1.0;C = tunnel buried depth and D = tunnel diameter) earth pressure balanced (EPB) shield tunnels in cobble-rich soil, considering both the dynamic excavation process and particle size gradation. The work was performed by three dimensional discrete element method (DEM). Results show that particle size greatly influences the movement of cobble particles. The coarse particles serve as the skeleton of the ground and provide the stability. The erosion of fine particles has little influence on tunnel face stability, while the erosion of middle particles weakens tunnel face stability. The limit support pressure pf increases with increasing cutterhead rotating speed, and the normalized limit support pressure pf/gamma D (gamma = soil unit weight, D = tunnel diameter) obtained in this paper is larger than existing researches. The abrupt increase of middle particles in the muck composition can be recog-nized as the forewarning information against face failure.

关键词： Face stability Shallow EPB shield tunnel DEM Erosion Forewarning information

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Genetic status assessment and future development forecast for an isolated giant panda population

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GLOBAL ECOLOGY AND CONSERVATION 2025年 57卷

作者： Liu, Jiabin Yu, Jiaojiao Bi, Wenlei Fu, Mingxia Yu, Xiang Hou, Rong Song, Xinqiang Ma, Rui Zhou, Yanshan Li, Zusheng Yang, Hong Wu, Wei Gu, Jiang Huang, Chong Zhang, Long Gu, Xiaodong Gu, Haijun Yang, Daode Qi, Dunwu Cent South Univ Forestry & Technol Inst Wildlife Conservat Changsha 410004 Peoples R China Sichuan Key Lab Conservat Biol Endangered Wildlif Chengdu Peoples R China Daxiangling Nat Reserve Management & Protect Ctr Yaan 625200 Peoples R China Cent South Univ Forestry & Technol Coll Life & Environm Sci Changsha 410004 Peoples R China Sichuan Forestry & Grassland Bur Chengdu 610081 Peoples R China

The giant panda is a critical species for biodiversity conservation, yet the majority of its subpopulations are at high risk of extinction. To effectively guide conservation efforts and avert local extinctions, ongoing genetic monitoring is crucial. This study, focusing on the vital Daxiangling giant panda population in southwest China, utilized non-invasive genetic sampling and microsatellite markers to assess the genetic diversity and evaluate the impact of releasing captive-bred individuals on population viability. Our findings indicate that conservation efforts have reduced genetic differentiation between subpopulations (F-ST = 0.035). Although the Daxiangling population is small, it has moderate genetic diversity, suggesting potential adaptability. However, the future risks posed by small population size and inbreeding are still significant over the next century. To maintain 90 % of current genetic diversity, the Daxiangling population should have at least 80 individuals with a balanced sex ratio. Releasing the existing three female wild-training giant pandas can slightly boost the current genetic diversity, but the long-term survival probability is low (42.9 %). The interval of releases (every 5, 2, or 1 year) has little impact on long-term dynamics of population size, whereas the sex of released individuals does have a significant impact. Additionally, the duration of releases (spanning 20, 30, 50 or 100 years) also has notable effects on future population prospects. The most effective strategy to increase population size (to over 80 individuals), maintain the genetic diversity (above 90 %), and ensure a high survival probability (above 98 %) is to release at least one female panda annually for 50 years or two females annually for 30 years. These findings provide critical guidance for the future conservation of the Daxiangling giant panda population.

关键词： Daxiangling mountains Genetic diversity Genetic rescue Giant panda Population rejuvenation

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Incorporating Mixed-Ligand Zeolitic Imidazolate Framework into Polydimethyldiethoxysilane (PDMDES) Membrane for Enhancing Alcohol Pervaporation Recovery

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ACS APPLIED MATERIALS & INTERFACES 2024年第48期16卷 66594-66610页

作者： Chen, Xiaole Zhou, Qulan Zhang, Yafei Chen, Linyu Li, Na Xian Shiyou Univ Coll Mech Engn Xian 710000 Peoples R China Xi An Jiao Tong Univ Sch Energy & Power Engn State Key Lab Multiphase Flow Power Engn Xian 710049 Peoples R China

In the present study, a zeolitic imidazolate framework with mixed ligands, ZIF-8-90, was synthesized and embedded into an ultrathin polydimethyldiethoxysilane (PDMDES) matrix to prepare a ZIF-8-90/PDMDES mixed matrix membrane (MMM) for the enhanced recovery of alcohols from dilute aqueous solutions via pervaporation, using a facile solution coating method. The synthesized ZIF-8-90 particles demonstrated superior hydrophobicity and thermal stability compared to those of both ZIF-8 and ZIF-90 particles. Furthermore, the hydrophobicity, thermal stability, and sorption ability for alcohols of the ZIF-8-90/PDMDES MMM were significantly improved, attributed to the incorporation of mixed-ligand ZIF-8-90. Notably, the MMMs displayed two distinct cross-sectional morphologies: (1) ZIF-8-90 particles enveloped by PDMDES polymer forming filler bulges and (2) an accumulation of ZIF-8-90 particles resembling a brick-wall-like structure. The MMM incorporating 2.5 wt % ZIF-8-90 exhibited the optimal performance among the fabricated MMMs with various ZIF-8-90 loadings, spanning from 0 to 3.2 wt %. The effects of feed concentrations and operation temperatures were systematically investigated. The best pervaporation performance was achieved using the 2.5 wt % ZIF-8-90-filled MMM, effectively separating a 5.0 wt % ethanol/water mixture at 60 degrees C, yielding a distinguished total flux of 7.70 kgm-2h-1, an improved separation factor of 9.96, and an extraordinarily high PSI of 68.99 kgm-2h-1. Comparative analyses highlighted the superior pervaporation performance of the ZIF-8-90/PDMDES MMM over ZIF-8/PDMDES MMM, ZIF-90/PDMDES MMM, and other MMMs, underscoring its potential for practical applications in alcohol recovery.

关键词： Mixed-ligand ZIF PDMDES MMMs Pervaporationseparation Alcohols recovery

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Fast Gelation and Mechanical Reinforcement of Tetrahydroxydiboron-Induced Free Radical Polymerized Hydrogels under Harsh Conditions

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MACROMOLECULES 2024年第21期57卷 9965-9976页

作者： Wang, Yi Yuan, Wanting Liang, Qianqian Lv, Hongyi Liu, Xiaoting Zhao, Lijuan Wu, Jinrong Sichuan Normal Univ Coll Chem & Mat Sci Chengdu 610068 Peoples R China Sichuan Univ Coll Polymer Sci & Engn State Key Lab Polymer Mat Engn Chengdu 610065 Peoples R China

Hydrogels prepared through free radical polymerization hold great promise for large-scale production and practical applications but face challenges due to oxygen inhibition during polymerization and poor mechanical properties. These issues often necessitate complex structural designs and time-consuming anaerobic processes. This work presents a novel approach using tetrahydroxydiboron (THDB) combined with potassium persulfate (KPS) to rapidly produce hydrogels with enhanced mechanical properties under aerobic conditions, overcoming traditional limitations. The THDB-KPS system facilitates the gelation of acrylamide (AM) precursors in just 2 min under ambient conditions, significantly outperforming existing systems. This method is versatile across various monomer types, including hydrophilic, electrolyte, macromolecular and zwitterionic monomers. This rapid gelation effect stems from the THDB's ability to interact with dissolved oxygen to neutralize the inhibitory effects of oxygen, and to promote persulfate decomposition efficiently by homolytic cleavage to produce (HO)(2)B radicals through the coordination of N or O in the vinyl monomers with the diboron structure. Meanwhile, boron-induced hydrogen bonding and coordination interactions, along with the fast rise in temperature and viscosity of the reaction system, contribute to the shortened gelation time as well. These factors also lead to the formation of multiple physical cross-links as well as a network of densely and loosely cross-linked regions. Consequently, the mechanical properties of the hydrogel are significantly enhanced through the progressive deformation of these densely and loosely cross-linked regions along with the breakage of physical cross-links. This rapid gelation and mechanical reinforcement effect remains effective even under challenging conditions, including acidic or alkaline environments, low temperatures and impurity-laden environments. Therefore, this breakthrough offers a scala

关键词： Hydrogen bonds

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Strengthening of CMAS corrosion resistance of thermal barrier coatings by surface Al-Ce modification

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Surface and Coatings technology 2025年 510卷

作者： Wang, Haodong Zhuo, Xueshi Zhang, Jungui Cheng, Dingxiang Dong, Hao Lin, Xiankun Qin, Boying Mao, Jie Deng, Chunming Zhang, Xiaofeng Guangxi Key Laboratory of Automobile Components and Vehicle Technology School of Mechanical and Automotive Engineering Guangxi University of Science & Technology Liuzhou545006 China National Engineering Laboratory for Modern Materials Surface Engineering Technology Institute of New Materials Guangdong Academy of Science Guangzhou510651 China State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University Xi'an710054 China School of Materials Science and Engineering Shandong University Jinan250061 China

Molten Calcium-Magnesium-Aluminum-Silicate (CMAS) corrosion poses a significant challenge to the long-term durability of plasma-sprayed physical vapor deposition (PS-PVD) thermal barrier coatings(7YSZ TBCs). In this work, a novel two-element surface modification method is proposed to improve the corrosion resistance of 7YSZ TBCs against CMAS. The reaction mechanism of the Al-Ce modified layer is investigated. Experimental results from CMAS corrosion test demonstrate that the penetration of molten CMAS is effectively inhibited by the protective Al2O3 and CeAlO3 layers. The wetting and spreading behavior of molten CMAS on both the as-sprayed and Al-Ce modified coatings was observed in situ at 1200 °C for 3600 s. The Al-Ce modified coatings exhibited excellent CMAS corrosion resistance, providing a promising solution to the limitations of the feather-like columnar structure in PS-PVD TBCs. © 2025 Elsevier B.V.

关键词： Corrosion resistant coatings

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Unraveling the Connection between PCOS and renal Complications: Current insights and Future Directions

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Diabetes Research and Clinical Practice 2025年 224卷 112235-112235页

作者： Peng, Haoyu Ren, Junyi Zhao, Yang Fang, Xinyi Wang, Xiaoxiao Liu, Chi Wan, Zhengwei School of Medicine University of Electronic Science and Technology of China Chengdu China Department of Health Management Center & Institute of Health Management Sichuan Provincial People's Hospital School of Medicine University of Electronic Science and Technology of China Chengdu China Department of Organ Transplantation Sichuan Provincial People's Hospital School of Medicine University of Electronic Science and Technology of China Chengdu China Department of Nephrology Sichuan Clinical Research Center for Kidney Disease Sichuan Provincial People's Hospital University of Electronic Science and Technology Chengdu China

Polycystic ovary syndrome (PCOS) represents the most prevalent endocrine disorder among women of reproductive age, affecting approximately 5–18% of females worldwide. Characterized by irregular ovulation, hyperandrogenism, and polycystic ovaries, hyperandrogenism is the defining feature. Recent evidence highlights that, in addition to its notable reproductive and metabolic consequences, PCOS may also contribute to an elevated risk of renal complications. This increased risk is attributed to chronic low-grade inflammation, hormonal dysregulation, and disturbances in lipid metabolism inherent to the condition. However, the pathological mechanisms, clinical manifestations, and progression of secondary renal damage in this cohort remain insufficiently studied. This review consolidates current understanding of the relationship between PCOS and chronic kidney disease (CKD), aiming to clarify potential mechanisms by which PCOS may induce secondary renal dysfunction, encompassing both direct renal impairment and indirect damage mediated through systemic alterations. Furthermore, it advocates for comprehensive management strategies to mitigate renal risks in patients with PCOS, emphasizing the necessity of multidisciplinary approaches and further research to address these critical gaps. © 2025 Elsevier B.V.

关键词： Androgen Chronic Kidney Disease (CKD) Inflammation Insulin Resistance (IR) Metabolic disorder Oxidative Stress Polycystic ovary syndrome (PCOS)

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