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Crystalline framework nanosheets as platforms for functional materials

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International Journal of Minerals,Metallurgy and Materials 2023年第10期30卷 1986-2005页

作者： Yun Fan Cheng Chen siyao zhang Suoying zhang Fengwei Huo Weina zhang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing 211816China

The integration of organic and inorganic materials has been widely used in various applications to generate novel functional nanomaterials characterized by unique *** crystalline framework nanosheets and their synergistic effects have been studied recently for possessing the advantages of functional species as well as crystalline framework ***,we have focused on the preparation methods and applications of functional crystalline framework nanosheets in this *** introduced crystalline framework nanosheets and discussed the importance of integrating functional species with nanosheets to form functional crystalline framework ***,two aspects of the preparation methods of functional crystalline framework nanosheets were reviewed:in situ synthesis and post-synthesis ***,we discussed the properties of the crystalline framework nanosheets combined with various functional species and summarized their applications in catalysis,sensing,separation,and energy ***,we have shared our insights on the challenges of functional crystalline framework nanosheets,hoping to contribute to the knowledge base for optimizing the preparation methods,expanding categories,improving stability,and exploring potential applications.

关键词： functional materials crystalline framework nanosheets in situ synthesis post-synthesis modification unique properties

Electrocatalytic degradation of pesticide micropollutants in water by high energy pulse magnetron sputtered Pt/Ti anode

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Chinese Chemical Letters 2022年第12期33卷 5196-5199页

作者： Yuxin Zeng siyao zhang Lifeng Yin Yunrong Dai School of Environment Beijing Normal UniversityBeijing 100875China School of Water Resources and Environment China University of Geosciences(Beijing)Beijing 100083China

The increasing occurrence of pesticide micropollutants highlights the need for innovative water treatment technologies,particularly for small-community and household ***-oxidation is being widely studied in this area,unfortunately,safe,stable and efficient electrocatalytic anodes without released heavy metal ions are still highly *** this study,we fabricated a Pt/Ti anode by high energy pulse magnetron sputtering(HiPIMS-PtTi)which was used to decompose dichlorvos(DDVP)and azoxystrobin(AZX)in *** results show that the reaction rate constant(kENR)on HIPIMS was 35.7 min-1(DDVP)and 41.3 min-1(AZX),respectively,superior to electroplating Pt/Ti anode(EP-PtTi).The identification of radicals(^(·)OH,^(1)O_(2),^(·)O_(2)-)and micro-area analyses evidenced that Pt atoms were embedded into the TiO_(2) lattice on the surface of Ti plate by high-energy ions,which resulted in more adsorbed hydroxyls,and higher production of·OH under polarization ***,the electro-oxidation intermediates of DDVP and AZX were identified and the degradation pathways were speculated:(1)indirect oxidation dominated by·OH attack,and(2)direct electron transfer reaction of pesticides on the anode *** cooperated reactions achieve the complete degradation and highly efficient mineralization of DDVP and AZX.

关键词： Electrocatalysis Magnetron sputtering Pesticide Degradation mechanism Dichlorvos Azoxystrobin

Transmission Energy Allocation for Over-the-Air Computation with Energy Harvesting

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Journal of Communications and Information Networks 2024年第2期9卷 126-136页

作者： siyao zhang Zixiang Ren Xinmin Li Yin Long Jie Xu Shuguang Cui School of Computer Science and Technology Southwest University of Science and TechnologyMianyang 621010China Shenzhen Future Network of Intelligence Institute(FNii-Shenzhen) The Chinese University of Hong KongShenzhenGuangdong 518172China School of Information Science and Technology University of Science and Technology of ChinaHefei 230027China FNii-Shenzhen The Chinese University of Hong KongShenzhenGuangdong 518172China College of Computer Science Chengdu UniversityChengdu 610100China School of Science and Engineering FNii-Shenzhenand Guangdong Provincial Key Laboratory of Future Networks of IntelligenceThe Chinese University of Hong KongShenzhenGuangdong 518172China

Over-the-air computation(AirComp)has recently emerged as a promising multiple-access technique for fast wireless data aggregation(WDA)from distributed wireless devices(WDs). This paper investigates an energy harvesting (EH) AirComp system, in which multiple EH-powered single-antenna WDs simultaneously send wireless signals to a single-antenna access point (AP) with conventional energy supply for WDA via AirComp. Under this setup, we minimize the average computation mean square error(MSE)over a particular time period, by jointly optimizing the transmit energy allocation at the WDs and the AirComp denoising factors at the AP over time, subject to the energy causality constraints at individual WDs. First, we consider the offline scenario by assuming that the energy state information(ESI)and channel state information (CSI) are non-causally known at the beginning of the period, in which the formulated average MSE minimization corresponds to a non-convex optimization problem. We present a high-quality converged solution by using the techniques of alternating optimization and convex optimization. It is shown that for each WD,if the EH rate is sufficiently high,then the channel inversion power allocation is adopted;while if the EH rate is low, then all the harvested energy should be used up for transmission with proper energy allocation over time. Next, we consider the online scenario with causal ESI and CSI,in which the MSE minimization becomes a stochastic optimization *** this scenario, we present an offline-inspired online algorithm to obtain efficient online energy allocation designs by utilizing the obtained offline solutions. Finally,numerical results show that the proposed designs significantly outperform two benchmark schemes with power-halving and full-power transmission,respectively.

关键词： over-the-air computation(AirComp) power allocation energy harvesting(EH) optimization

Degradation of 2,4,6-trichlorphenol by producing hydrogen using ultrasonic mist generated from photocatalysts suspension

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Emerging Contaminants 2020年第1期6卷 155-161页

作者： Huihui Li Xin Chang Yuanzheng zhang siyao zhang Yunrong Dai Lifeng Yin State Key Laboratory of Environment Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing100875PR China School of Water Resources and Environment School of Scientific ResearchChina University of GeosciencesBeijing100083PR China

Photocatalytic hydrogen production synergized with the oxidation of pollutants is an environmentally friendly and economical approach to generate clean energy and remove the pollution from *** this study,photocatalytic hydrogen production cooperating with 2,4,6-trichlorophenol(2,4,6-TCP)degradation have been reinforced by introducing an ultrasonic *** degradation of 2,4,6-TCP in a mist of three photocatalysts(g-C3N4,TiO2,and Bi2O3)generated by ultrasonic atomization was performed under 254 nm ultraviolet(UV254)light *** results showed that,under UV254 irradiation,three different photocatalysts(g-C3N4,TiO2,and Bi2O3)all accelerated both hydrogen production and 2,4,6-TCP ***,2,4,6-TCP degradation and photocatalytic hydrogen production exhibited an obvious synergistic effect,since 2,4,6-TCP has a strong tendency to react with photo-generated holes and their second radicals so as to inhibit the recombination of carriers,and thus improved the efficiency of hydrogen production ***,by introducing ultrasonic atomization,the atomized droplets acted as micro-photocatalytic units to replace the macrophotocatalytic reaction ***,the mass transfer distance for free radicals was restricted and the utilization of light energy by photocatalysts was ***,the reaction efficiency was *** results reveal environmentally friendly and economical potential of hydrogen production by photocatalytic degradation of 2,4,6-TCP in atomized droplets.

关键词： Ultrasonic atomization Photocatalysis Hydrogen production 2,4,6-Trichlorophenol Degradation

The difference of Teaching Mode of Graphic Design Major in Chinese and American Universities

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Journal of Contemporary Educational Research 2020年第9期4卷 46-50页

作者： siyao zhang Faculty of Arts and Design Zhongyuan University of TechnologyZhengzhou 450007China

This article is based on personal visits to Louisiana State University in the United *** analyzes and introduces the hotspots of curriculum design,training methods,learning environment,professional ability and quality training of graphic design majors in American public comprehensive *** the teaching concepts and methods that are inspiring for the relevant design courses for our country from a personal perspective,and gain insights into the deep-seated problems in the cultivation of design innovation capabilities in China and the United States,in order to arouse everyone’s reflection and further develop our country’s design educational reform ideas.

关键词： Graphic design Teaching mode Curriculum Chinese and American universities

Cell sheet formation enhances the therapeutic effects of human umbilical cord mesenchymal stem cells on myocardial infarction as a bioactive material

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Bioactive Materials 2021年第9期6卷 2999-3012页

作者： Rui Guo Feng Wan Masatoshi Morimatsu Qing Xu Tian Feng Hang Yang Yichen Gong Shuhong Ma Yun Chang siyao zhang Youxu Jiang Heqing Wang Dehua Chang Hongjia zhang Yunpeng Ling Feng Lan Department of Cardiac Surgery Peking University Third HospitalBeijing100191China Department of Cardiovascular Physiology Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama UniversityOkayama700-8558Japan Department of Cardiovascular Surgery Tongji University East HospitalShanghai200120China Department of Neurology Graduate School of MedicineDentistry and Pharmaceutical SciencesOkayama UniversityOkayama700-8558Japan State Key Laboratory of Cardiovascular Disease Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing100037China Department of Cardiac Surgery The University of Tokyo HospitalTokyo113-8655Japan Beijing Laboratory for Cardiovascular Precision Medicine MOE Key Laboratory of Medical Engineering for Cardiovascular DiseasesAnzhen HospitalCapital Medical UniversityBeijing100029China Fuwai Hospital Chinese Academy of Medical Sciences ShenzhenShenzhenChina

Stem cell-based therapy has been used to treat ischaemic heart diseases for two ***,optimal cell types and transplantation methods remain *** study evaluated the therapeutic effects of human umbilical cord mesenchymal stem cell(hUCMSC)sheet on myocardial infarction(MI).Methods:hUCMSCs expressing luciferase were generated by lentiviral transduction for in vivo bio-luminescent imaging tracking of *** applied a temperature-responsive cell culture surface-based method to form the hUCMSC *** retention was evaluated using an in vivo bio-luminescent imaging tracking *** transcriptional profiling of infarcted hearts and further immunohistochemical assessment of monocyte and macrophage subtypes were used to determine the mechanisms underlying the therapeutic effects of the hUCMSC *** and pathological analyses of heart sections were performed to evaluate cardiac function,angiogenesis and left ventricular ***:When transplanted to the infarcted mouse hearts,hUCMSC sheet significantly improved the retention and survival compared with cell *** the early stage of MI,hUCMSC sheet modulated inflammation by decreasing Mcp1-positive monocytes and CD68-positive macrophages and increasing Cx3cr1-positive non-classical macrophages,preserving the cardiomyocytes from acute ***,the extracellular matrix produced by hUCMSC sheet then served as bioactive scaffold for the host cells to graft and generate new epicardial tissue,providing mechanical support and routes for *** effects of hUCMSC sheet treatment significantly improved the cardiac function at days 7 and 28 ***:hUCMSC sheet formation dramatically improved the biological functions of hUCMSCs,mitigating adverse post-MI remodelling by modulating the inflammatory response and providing bioactive scaffold upon transplantation into the *** perspective:Due to its excellent availability as wel

关键词： Mesenchymal stem cells Cell sheet Myocardial infarction Regulation of inflammatory response Ventricular remodelling

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刘国钧先生在金陵大学图书馆时期的事业成就

图书馆杂志 2022年第3期41卷 54-60页

作者：张思瑶南京大学信息管理学院江苏南京210023

文章通过对金陵大学《图书馆报告》的解读,梳理了刘国钧先生学生时代和毕业留校工作后在金陵大学图书馆取得的工作业绩:一是在金陵大学图书馆勤工助学期间承担的工作,提出刘先生撰写《儿童劳动与教育》与《儿童图书馆和儿童文学》两文,... 详细信息

文章通过对金陵大学《图书馆报告》的解读,梳理了刘国钧先生学生时代和毕业留校工作后在金陵大学图书馆取得的工作业绩:一是在金陵大学图书馆勤工助学期间承担的工作,提出刘先生撰写《儿童劳动与教育》与《儿童图书馆和儿童文学》两文,并非仅出自对于教育的关注和受相关教育理论的影响,也有实际的工作经验作依托;二是《中国图书分类法》的应用和影响;三是不断呼吁、要求,最终促成金陵大学图书馆新馆的建造;四是抗战期间在成都维持并拓展金陵大学图书馆的服务项目和内涵。文章力求将刘先生在金陵大学求学和工作的时段作为一个整体,展现他在金陵大学图书馆任职期间为图书馆所作的具体贡献。

关键词：图书馆史刘国钧刘衡如金陵大学图书馆

从《近代图书馆之性质》到《什么是图书馆学》——刘国钧先生图书馆学思想之理论与实践探源

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图书与情报 2024年第5期 1-13,F0002,F0003页

作者：张思瑶南京财经大学图书馆江苏南京210023

刘国钧(衡如)先生著述等身,一生共发表了237篇有关图书馆学的“撰述”文章和“演说”文稿,但其中表达他对图书馆性质与功用的认识,以及对图书馆学理论体系思考的作品仅有5篇,分别是《近代图书馆之性质》(1919)、《近代图书馆之性质及功... 详细信息

刘国钧(衡如)先生著述等身,一生共发表了237篇有关图书馆学的“撰述”文章和“演说”文稿,但其中表达他对图书馆性质与功用的认识,以及对图书馆学理论体系思考的作品仅有5篇,分别是《近代图书馆之性质》(1919)、《近代图书馆之性质及功用》(1922)、《图书馆学要旨》(1934)、《什么是图书馆学(供讨论用)》(1957)和《图书馆学概论》(1957)。文章立足于这5篇代表性的图书馆学文章,将它们作为一个整体,结合刘国钧先生一生的图书馆学实践,探究其图书馆学思想形成、发展和渐臻完善的理论脉络。

关键词：刘国钧(衡如) 国立西北图书馆《近代图书馆之性质》《什么是图书馆学》

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以人为镜,鉴彼知己——基于分类读物推广理念的“传记读物阅览室”建设

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图书馆杂志 2019年第11期38卷 49-55页

作者：张思瑶南京大学信息管理学院

"分类读物推广"即依图书分类推广主题读物的理念为依据,建议图书馆阅览空间中发展"传记读物阅览室",并做好传记佳作的阅读推广。图书馆拥有丰富的中外古今传记读物资源,但因《中图法》的分类和传记人物的不同内涵而往往分布在馆内不同区... 详细信息

"分类读物推广"即依图书分类推广主题读物的理念为依据,建议图书馆阅览空间中发展"传记读物阅览室",并做好传记佳作的阅读推广。图书馆拥有丰富的中外古今传记读物资源,但因《中图法》的分类和传记人物的不同内涵而往往分布在馆内不同区域,因此有必要将此馆藏资源加以集中,作专题性的读物展示和阅读推广。文章认同阅读中外传记读物佳作可以使读者获得励志奋发、感恩怀旧、心理疗愈、认知社会历史真相等精神营养的观点,进而认为强化传记读物的推广,能够有效对接文化教育需求、提升阅读推广效果、深化经典阅读推广,并可以达到创新馆内空间建设的目的。在"传记读物阅览室"的建设和运行过程中,要考虑到图书复本数量、书目选择、书评供给与合理排架等业务细节问题。

关键词：传记分类阅读专题阅览室