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Encapsulating perovskite quantum dots into 3D COF for visible light-driven CO2 reduction

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Science China Chemistry 2025年

作者： xinxin wang Yucheng Jin Xiya Yang Qingyu Luan Tianyu wang Dongdong Qi Kang wang Jianzhuang Jiang College of Chemistry and Materials Science Anhui Normal University Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of Chemistry and Chemical Engineering School of Chemistry and Biological EngineeringUniversity of Science and Technology Beijing

Lead halide perovskite quantum dots（LHP QDs） have been revealed to possess great potential in photocatalytic applications including CO2reduction, which however suffer from poor stability. Herein, a high crystalline hydrazine-linked three-dimensional（3D） covalent organic framework, USTB-17, was fabricated from the reaction between 12-connected building block and 4-connected 3,5,7-tetrakis（4-aldophenyl）-adamantane. Post-modification with Ni2+affords the metallic framework USTB-17（Ni）followed by sequential deposition of the CH3NH2PbI3（MAPbI3） perovskite QDs into its pores, generating the USTB-17（Ni）@MAPbI3composite. Powder X-ray diffraction analysis together with theoretical simulations and transmission electron microscopy discloses the crystalline nature of USTB-17, USTB-17（Ni）, and USTB-17（Ni）@MAPbI3with an unprecedented noninterpenetrated hpt topology. The close contact of QDs inside the COF pores with the Ni catalytic site locating at the pore surface of COF allows a rapid transfer of the photogenerated electrons in QDs to the Ni catalytic sites, enhancing the photocatalytic activity for CO2reduction. This endows USTB-17（Ni）@MAPbI3with efficient photocatalysis performance for photocatalytic CO2reduction with CO generation rate of 365 μmol g-1h-1and CO selectivity up to 96% under visible-light irradiation, 7 times higher than that of USTB-17（Ni）. After four cycles of reactions, the photocatalytic CO generation rate remains almost unchanged, demonstrating its excellent cycle stability.

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认知决策视角下的智能系统:机遇与挑战

管理工程学报 2025年第2期39卷 1-13页

作者：徐泽水王新鑫牛若轩四川大学商学院四川成都610041

新兴技术的快速发展和智能系统产品的逐渐成熟极大地推动了认知学习的发展,显著提高了经济服务的效率,挖掘了决策模式的潜在价值,使智能决策系统成为现代生活中不可或缺的一部分。认知视角下的智能决策系统旨在发挥人类认知和机器智能... 详细信息

新兴技术的快速发展和智能系统产品的逐渐成熟极大地推动了认知学习的发展,显著提高了经济服务的效率,挖掘了决策模式的潜在价值,使智能决策系统成为现代生活中不可或缺的一部分。认知视角下的智能决策系统旨在发挥人类认知和机器智能的核心优势,实现智能决策的新生态。本文运用文献计量的定量研究方法和文献分析的定性研究方法对现代环境下智能决策系统的认知特性进行了全面分析,重点从信息融合、认知计算和人机交互三方面阐述了智能系统的研究进展。同时,本文从系统管理的视角提出了认知视角下智能决策的挑战,并展望了未来的研究方向,期望为智能决策系统的发展提供理论和实践指导,推动其持续进步。

关键词：认知决策智能系统信息融合认知计算人机交互

Catalyst-free,radical-mediated intermolecular 1,2-arylheteroarylation of alkenes by cleaving inert C–C bond

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Science China Chemistry 2021年第10期64卷 1703-1708页

作者： Meishan Ji xinxin wang Jige Liu xinxin Wu Chen Zhu Key Laboratory of Organic Synthesis of Jiangsu Province College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Key Laboratory of Synthetic Chemistry of Natural Substances Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China

A novel photoinduced intermolecular 1,2-arylheteroarylation of alkenes and the efficient synthesis of valuable polyarylalkanes are *** reaction is operationally simple,proceeds under mild conditions and with no additional catalyst and *** strategically designed radical cascade reaction is enabled by electron transfer,and involves cleavage of an inert C–C *** process features broad functional group compatibility as well as high product transformability.

关键词： alkene difunctionalization arylation catalyst-free C–C activation functional group migration radical reactions

The pathogenic mechanism of TAR DNA-binding protein 43(TDP-43)in amyotrophic lateral sclerosis

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Neural Regeneration Research 2024年第4期19卷 800-806页

作者： xinxin wang Yushu Hu Renshi Xu Medical College of Nanchang University Department of Neurology Jiangxi Provincial People's HospitalThe First Affiliated Hospital of Nanchang Medical CollegeThe Clinical College of Nanchang Medical College

The onset of amyotrophic lateral sclerosis is usually characterized by focal death of both upper and/or lower motor neurons occurring in the motor cortex,basal ganglia,brainstem,and spinal cord,and commonly involves the muscles of the upper and/or lower extremities,and the muscles of the bulbar and/or respiratory ***,as the disease progresses,it affects the adjacent body regions,leading to generalized muscle weakness,occasionally along with memory,cognitive,behavioral,and language impairments;respiratory dysfunction occurs at the final stage of the *** disease has a complicated pathophysiology and currently,only riluzole,edaravone,and phenylbutyrate/taurursodiol are licensed to treat amyotrophic lateral sclerosis in many industrialized *** TAR DNA-binding protein 43 inclusions are observed in 97%of those diagnosed with amyotrophic lateral *** review provides a preliminary overview of the potential effects of TAR DNAbinding protein 43 in the pathogenesis of amyotrophic lateral sclerosis,including the abnormalities in nucleoplasmic transport,RNA function,post-translational modification,liquid-liquid phase separation,stress granules,mitochondrial dysfunction,oxidative stress,axonal transport,protein quality control system,and non-cellular autonomous functions(e.g.,glial cell functions and prion-like propagation).

关键词： amyotrophic lateral sclerosis axonal transport liquid-liquid phase separation noncellular autonomous functions oxidative stress pathogenesis post-translational modification protein quality control system stress granules TAR DNA-binding protein 43(TDP-43)

Estimation of the Scale of Artificial Reef Sets on the Basis of Underwater 3D Reconstruction

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Journal of Ocean University of China 2021年第5期20卷 1195-1206页

作者： TANG Yanli ZHANG Zuhao wang xinxin Department of Fisheries College Ocean University of ChinaQingdao 266003China

The creation of three-dimensional models from an unorganized set of points is an active research area in computer *** of the purposes of this study is to explore the 3D reconstruction of a cube-type artificial reef(CTAR)set by linear structured light and binocular stereo vision technology in an underwater *** experimental setup is composed of two ca-meras in a stereo vision *** alpha shapes method can be used to construct a surface that most closely reflects the arti-ficial reef set described by the points.A parameter study is conducted to assess the scales of the set(i.e.,usable volume,surface area,projected area,height,and base diameter)on the basis of 3D *** results show that the quality of 3D recon-struction in an underwater environment is acceptable for estimating the scale size of the CTAR *** to the measurement of the scale sizing of the CTAR set,the relationships between the parameters of the CTAR set and the number of CTAR modules were ***,the usable volume of the CTAR set can be estimated depending on the basis of the number of CTAR modules.

关键词： cube-type artificial reef structured light binocular stereo vision three-dimensional reconstruction alpha shapes method

Three-dimensional time-varying sliding mode guidance law against maneuvering targets with terminal angle constraint

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Chinese Journal of Aeronautics 2022年第4期35卷 303-319页

作者： xinxin wang Hongqian LU Xianlin HUANG Yefeng YANG Zongyu ZUO Center for Control Theory and Guidance Technology Harbin Institute of TechnologyHarbin 150001China The Seventh Research Division Beihang UniversityBeijing 100191China

This paper deals with the problem of intercepting maneuvering targets with terminal angle constraints for missiles subjected to three-dimensional non-decoupling engagement *** achieve the finite-time interception and satisfactory overload characteristics, a time varying sliding mode control methodology is developed based on a time base generator function. The main feature of the proposed guidance law guarantees the Line-of-Sight(LOS) angles to converge to small neighborhoods of the desired values at the interception time. First, a fractional power extended state observer is used to estimate the unknown target acceleration, which can significantly reduce the adaptive switching gain. The fractional power extended state observer enjoys the advantage of better noise tolerance. Then, a newly designed sliding mode surface is constructed by introducing a time base generator function and the time-varying sliding mode guidance law is developed based on this time-varying sliding surface. The proposed guidance law significantly reduces the overload magnitudes. Numerical simulations are carried out to verify the performance of the proposed guidance law.

关键词： Guidance law Maneuvering target Terminal angle constraint Three-dimensional Time-varying sliding mode

Conditioning treatments mitigate the levels of fecal pollution indicators in soil during land-application of sewage sludge

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Science China(Technological Sciences) 2024年第10期67卷 3091-3102页

作者： wang YuHang LI Hua FANG WenHao wang Ru wang xinxin ZHENG GuanYu ZHOU LiXiang Department of Environmental Engineering College of Resources and Environmental SciencesNanjing Agricultural UniversityNanjing 210095China College of Materials and Chemical Engineering Pingxiang UniversityPingxiang 337055China Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization Nanjing 210095China

Sewage sludge is a major source of fecal pathogens in the environment,and its application to land can result in a significant release of these pathogens into the *** conditioning treatments are crucial for improving the dewatering process of sludge,their impact on the presence and behavior of fecal pathogens in soil remains *** study aims to assess four extraction methods for recovering fecal pollution indicators from soil amended with unconditioned and conditioned *** indicators include Escherichia coli(EC),human-specific HF183 Bacteroides(HF183),human adenovirus(HAdV),human BK polyomavirus(BKPyV),human JC polyomavirus(JCPyV),and cross-assembly phage(crAssphage).This study also examines how soil moisture content affects the decay of these fecal pollution indicators in soil amended with raw sludge and investigates the influence of conditioning treatments with cationic polyacrylamide(PAM),Fenton’s reagents,Fe[III]/CaO on their persistence in *** results indicated that the direct extraction method was the most effective and unbiased for recovering fecal pollution indicators from sludge-amended soil compared with the three elution-concentration *** fecal pollution indicators,except HAdV,remained stable under dry soil conditions,while high soil moisture content(48.39%‒53.14%)slowed the decay rates of these *** the application of sludge to soil,effective control of fecal pollution indicators was observed,with JCPyV and HAdV becoming undetectable within a short *** log reduction values of HF183,BKPyV,and crAssphage ranged from 0.1 to 2.8 logs after 30 d of *** application of conditioned sludge,especially Fenton’s reagent-conditioned sludge,resulted in a reduction in human fecal contamination in the receiving ***,implementing appropriate conditioning methods,such as using Fenton’s reagent,can effectively mitigate the health risks associated with fecal pathogens.

关键词： fecal pollution indicators sewage sludge conditioning treatment land application soil

Electron relaxation properties of Ar magnetron plasmas

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Plasma Science and Technology 2018年第3期20卷 87-94页

作者： Xinjing CAI xinxin wang Xiaobing ZOU Department of Electrical Engineering Northeast Electric Power UniversityJilin 132012People's Republic of China State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Tsinghua UniversityBeijing 100084People's Republic of China

An understanding of electron relaxation properties in plasmas is of importance in the application of *** improved multi-term approximation of the Boltzmann equation is employed to study electron transport and relaxation properties in ***,inelastic and nonconservative collisions between electrons and neutral particles are *** expressions for the transport coefficients are obtained using the expansion coefficients and the collision operator *** solutions of the matrix equations for the expansion coefficients are also *** calculations of the Reid model are presented to demonstrate the accuracy of the improved multi-term *** is shown that the twoterm approximation is generally not accurate enough and the magnetic fields can reduce the anisotropy of the velocity distribution *** electron relaxation properties of Ar plasmas in magnetrons for various magnetic fields are *** is demonstrated that the energy parameters change more slowly than the momentum parameters.

关键词： electron transport electron relaxation Boltzmann equation multi-term approximation

The group size effect and synchronization of vigilance in the Tibetan wild ass

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Current Zoology 2021年第1期67卷 11-16页

作者： xinxin wang Le YANG Yumeng ZHAO Cong Yu Zhongqiu Li Lab of Animal Behavior and Conservation School of Life SciencesNanjing University163 Xianlin AvenueNanjing210023China Tibet Plateau Institute of Biology 19 Beiing West RoadLhasa850000China

Vigilance behavior is considered as an effective strategy for prey species to detect *** individual benefits from living in a group by reducing the time spent being vigilant without affecting the probability of detecting a ***,the mechanism producing a decrease in vigilance with increasing group size is *** models of vigilance assume that group members scan independently of one *** in recent studies,the other 2 patterns of vigilance,coordination and synchronization,were reported in some *** 2 summers(2018 and 2019),we studied the group-size effect on vigilance and foraging of Tibetan wild ass in Chang Tang Nature Reserve of *** also tested whether individuals scan the environment independently,tend to coordinate their scans,or tend to synchronize their *** results showed that individuals decreased the time spent on vigilance with increasing group size,while increased the time spent *** members scanned the environment at the same time more frequently and there was a positive correlation between group members'behaviors,indicating that Tibetan wild asses tend to synchronize their vigilance.

关键词： group size effect synchronization of vigilance Tibetan wild ass