This study focuses on the reform and development of physical education in colleges and universities in the post-epidemic era,beginning from the design of an innovative“Internet Plus Swimming”teaching mode to enhance...This study focuses on the reform and development of physical education in colleges and universities in the post-epidemic era,beginning from the design of an innovative“Internet Plus Swimming”teaching mode to enhance the quality of swimming lessons in colleges and universities,and subsequently applying it to the teaching of technical movements in swimming,so as to promote the teaching reform of swimming lessons in colleges and universities,as well as improve the teaching quality.This study showed that the students in the experimental group were better than those in the control group in four aspects:theoretical knowledge of swimming,speed,technique,and students’independent learning ability.It can be concluded that it is both,effective and feasible to integrate multimedia learning resources,using digital information technology and network mobile devices,to construct the“Internet Plus Swimming”teaching mode and apply it to general swimming courses in colleges and universities in the post-epidemic era.展开更多
The polymer electrolyte membrane(PEM)electrolyzers are burdened with costly iridium(Ir)-based catalysts and high operation overpotentials for the oxygen evolution reaction(OER).The development of earth-abundant,highly...The polymer electrolyte membrane(PEM)electrolyzers are burdened with costly iridium(Ir)-based catalysts and high operation overpotentials for the oxygen evolution reaction(OER).The development of earth-abundant,highly active,and durable electrocatalysts to replace Ir is a critical step in reducing the cost of green hydrogen production.Here we develop a Ru5Mo4Ox binary oxide catalyst that exhibits high activity and stability in acidic OER.The electron-withdrawing property of Mo enriches the electrophilic surface oxygen species,which promotes acidic OER to proceed via the adsorbate evolution pathway.As a result,we achieve a 189 mV overpotential at 10 mA·cm^(-2) and a Tafel slope of 48.8 mV·dec^(-1).Our catalyst demonstrates a substantial 18-fold increase in intrinsic activity,as evaluated by turnover frequency,compared to commercially available RuO_(2) and IrO_(2) catalysts.Moreover,we report a stable OER operation at 10 mA·cm^(-2) for 100 h with a low degradation rate of 2.05 mV·h^(-1).展开更多
In recent years,wearable electrochemical biosensors have received increasing attention,benefiting from the growing demand for continuous monitoring for personalized medicine and point-of-care medical assistance.Incorp...In recent years,wearable electrochemical biosensors have received increasing attention,benefiting from the growing demand for continuous monitoring for personalized medicine and point-of-care medical assistance.Incorporating electrochemical biosensing and corresponding power supply into everyday textiles could be a promising strategy for next-generation non-invasive and comfort interaction mode with healthcare.This review starts with the manufacturing and structural design of electrochemical biosensing textiles and discusses a series of wearable electrochemical biosensing textiles monitoring various biomarkers(e.g.,pH,electrolytes,metabolite,and cytokines)at the molecular level.The fiber-shaped or textile-based solar cells and aqueous batteries as corresponding energy harvesting and storage devices are further introduced as a complete power supply for electrochemical biosensing textiles.Finally,we discuss the challenges and prospects relating to sensing textile systems from wearability,durability,washability,sample collection and analysis,and clinical validation.展开更多
The electrocatalytic approach of converting carbon dioxide(CO2)to valuable chemical commodities and feedstocks provides a promising solution to store intermittent renewable electricity in a high-energy-density way and...The electrocatalytic approach of converting carbon dioxide(CO2)to valuable chemical commodities and feedstocks provides a promising solution to store intermittent renewable electricity in a high-energy-density way and mitigate CO2 accumulation in atmosphere[1–3].Recently,the electrochemical CO2 reduction reaction(CO2RR)has made remarkable progress in yielding C1 products(such as carbon monoxide(CO)[4–6]and formate(HCOO−)[7–9])with significantly high current densities and high Faradaic efficiencies(FEs).展开更多
Flexible sensors have attracted significant attention as they could be directly attached to/implanted into the body or incorporated into textiles to monitor human activities and give feedbacks for healthcare.A typical...Flexible sensors have attracted significant attention as they could be directly attached to/implanted into the body or incorporated into textiles to monitor human activities and give feedbacks for healthcare.A typical fabrication method is the direct use of intrinsically flexible active materials such as carbon nanotubes(CNTs).CNTs are generally assembled into aligned structures to extend their remarkable chemical,mechanical,and electrical properties to macroscopic scale to afford high sensing performances.In this review,we present the recent advance of CNT assemblies as electrodes or functional materials for flexible sensors.The realizations of aligned CNTs are firstly investigated.A variety of flexible sensors based on the aligned CNTs are then carefully explored,with an emphasis on understanding the working mechanism for their high sensing properties.The main attention is later paid to comparing two main categories of flexible sensors with fiber and film shapes.The remaining challenges are finally highlighted to offer some insights for future study.展开更多
文摘This study focuses on the reform and development of physical education in colleges and universities in the post-epidemic era,beginning from the design of an innovative“Internet Plus Swimming”teaching mode to enhance the quality of swimming lessons in colleges and universities,and subsequently applying it to the teaching of technical movements in swimming,so as to promote the teaching reform of swimming lessons in colleges and universities,as well as improve the teaching quality.This study showed that the students in the experimental group were better than those in the control group in four aspects:theoretical knowledge of swimming,speed,technique,and students’independent learning ability.It can be concluded that it is both,effective and feasible to integrate multimedia learning resources,using digital information technology and network mobile devices,to construct the“Internet Plus Swimming”teaching mode and apply it to general swimming courses in colleges and universities in the post-epidemic era.
基金support from the National Natural Science Foundation of China(No.52103300)the Guangdong Basic and Applied Basic Research Foundation(No.2023A1515010572)+7 种基金the Shenzhen Science and Technology Program(Nos.JCYJ20210324132806017 and GXWD20220811163904001)the Innovation Material Research Center of Harbin Institute of Technology,Shenzhen for the instrumentation assistance.Y.H.W.acknowledges the funding support from the National Natural Science Foundation of China(No.22179088)the Natural Science Foundation of Jiangsu Province of China(No.BK20210699)the National Natural Science Fund for Excellent Young Scientists Fund Program(Overseas)the Program for Jiangsu Specially-Appointed Professors,the Program of Soochow Innovation and Entrepreneurship Leading Talents(No.ZXL2022450)the start-up supports of Soochow University,Suzhou Key Laboratory of Functional Nano&Soft Materials,the Collaborative Innovation Center of Suzhou Nano Science&Technology,the 111 Project,the Joint International Research Laboratory of Carbon-Based Functional Materials and Devices.J.Z.acknowledges the funding support from the State Key Laboratory of Urban Water Resources&Environment(Harbin Institute of Technology)(No.2022TS36)Computer time made available by the National Supercomputing Center of China in Shenzhen(Shenzhen Cloud Computing Center)is gratefully acknowledged.J.L.acknowledges the start-up funding support from Shanghai Jiao Tong University(No.WH220432516)This research used synchrotron resources of the Advanced Photon Source,an Office of Science User Facility operated for the US Department of Energy Office of Science by Argonne National Laboratory and was supported by the US Department of Energy under contract No.DE-AC02-06CH11357 and the Canadian Light Source and its funding partners.
文摘The polymer electrolyte membrane(PEM)electrolyzers are burdened with costly iridium(Ir)-based catalysts and high operation overpotentials for the oxygen evolution reaction(OER).The development of earth-abundant,highly active,and durable electrocatalysts to replace Ir is a critical step in reducing the cost of green hydrogen production.Here we develop a Ru5Mo4Ox binary oxide catalyst that exhibits high activity and stability in acidic OER.The electron-withdrawing property of Mo enriches the electrophilic surface oxygen species,which promotes acidic OER to proceed via the adsorbate evolution pathway.As a result,we achieve a 189 mV overpotential at 10 mA·cm^(-2) and a Tafel slope of 48.8 mV·dec^(-1).Our catalyst demonstrates a substantial 18-fold increase in intrinsic activity,as evaluated by turnover frequency,compared to commercially available RuO_(2) and IrO_(2) catalysts.Moreover,we report a stable OER operation at 10 mA·cm^(-2) for 100 h with a low degradation rate of 2.05 mV·h^(-1).
基金National Natural Science Foundation of China,Grant/Award Number:52103300Guangdong Basic and Applied Basic Research Foundation,Grant/Award Number:2023A1515010572Shenzhen Science and Technology Program,Grant/Award Numbers:JCYJ20210324132806017,GXWD20220811163904001。
文摘In recent years,wearable electrochemical biosensors have received increasing attention,benefiting from the growing demand for continuous monitoring for personalized medicine and point-of-care medical assistance.Incorporating electrochemical biosensing and corresponding power supply into everyday textiles could be a promising strategy for next-generation non-invasive and comfort interaction mode with healthcare.This review starts with the manufacturing and structural design of electrochemical biosensing textiles and discusses a series of wearable electrochemical biosensing textiles monitoring various biomarkers(e.g.,pH,electrolytes,metabolite,and cytokines)at the molecular level.The fiber-shaped or textile-based solar cells and aqueous batteries as corresponding energy harvesting and storage devices are further introduced as a complete power supply for electrochemical biosensing textiles.Finally,we discuss the challenges and prospects relating to sensing textile systems from wearability,durability,washability,sample collection and analysis,and clinical validation.
基金supported by the Ministry of Science and Technology(2016YFA0203302)the National Natural Science Foundation of China(21875042,21634003,51573027 and 21975148)+6 种基金the Science and Technology Commission of Shanghai Municipality(16JC1400702 and 18QA1400800)Shanghai Municipal Education Commission(2017-01-07-00-07-E00062)the Program of Eastern Scholar at Shanghai Institutions and Yanchang Petroleum Group,the Natural Science Foundation of Jiangsu Higher Education Institutions(SBK20190810)Jiangsu Province High-Level Talents(JNHB-106)the China Postdoctoral Science Foundation(2019M660128)the start-up supports of Soochow University and the Program for Jiangsu Specially Appointed Professorsthe Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。
文摘The electrocatalytic approach of converting carbon dioxide(CO2)to valuable chemical commodities and feedstocks provides a promising solution to store intermittent renewable electricity in a high-energy-density way and mitigate CO2 accumulation in atmosphere[1–3].Recently,the electrochemical CO2 reduction reaction(CO2RR)has made remarkable progress in yielding C1 products(such as carbon monoxide(CO)[4–6]and formate(HCOO−)[7–9])with significantly high current densities and high Faradaic efficiencies(FEs).
基金MOST,Grant/Award Number:2016YFA0203302NSFC,Grant/Award Numbers:52103300,22109067+2 种基金Harbin Institute of Technology,Grant/Award Number:HA45001121Southern University of Science and Technology,Grant/Award Numbers:Y01336230,Y01336130Shenzhen Science and Technology Program,Grant/Award Numbers:JCYJ20210324132806017,KQTD20200820113045083。
文摘Flexible sensors have attracted significant attention as they could be directly attached to/implanted into the body or incorporated into textiles to monitor human activities and give feedbacks for healthcare.A typical fabrication method is the direct use of intrinsically flexible active materials such as carbon nanotubes(CNTs).CNTs are generally assembled into aligned structures to extend their remarkable chemical,mechanical,and electrical properties to macroscopic scale to afford high sensing performances.In this review,we present the recent advance of CNT assemblies as electrodes or functional materials for flexible sensors.The realizations of aligned CNTs are firstly investigated.A variety of flexible sensors based on the aligned CNTs are then carefully explored,with an emphasis on understanding the working mechanism for their high sensing properties.The main attention is later paid to comparing two main categories of flexible sensors with fiber and film shapes.The remaining challenges are finally highlighted to offer some insights for future study.
