检索结果-南通市图书馆

维普期刊数据库博看期刊

C学院现代物流管理专业校企合作“新零售”实践教学基地建设探究

在线全文

学校读者我要写书评

暂无评论

广州城市职业学院学报 2024年第1期18卷 26-29页

作者：张建奇广州城市职业学院数字商务学院广东广州510405

当前,高职院校校企合作共建实践教学基地过程中还存在着企业参与积极性不够、难从校企合作中直接获利、政策支持不完善等问题。通过分析C学院现代物流管理专业与R零售连锁集团之间校企合作“新零售”实践教学基地的建设,归纳了两者合作... 详细信息

当前,高职院校校企合作共建实践教学基地过程中还存在着企业参与积极性不够、难从校企合作中直接获利、政策支持不完善等问题。通过分析C学院现代物流管理专业与R零售连锁集团之间校企合作“新零售”实践教学基地的建设,归纳了两者合作的途径主要包括:构建组织结构、建立运行规则、打造师资队伍、丰富实践形式、共同申报科研项目等。并在此基础上,提出了推进校企合作共建实践教学基地工作的建议:找到校企双方的合作契合点;提供政策支持;建立合作效果评价体系。

关键词：高职院校校企合作物流管理专业零售连锁实践教学基地

WO_(3)改性及其光催化降解污染物研究进展

在线全文

学校读者我要写书评

暂无评论

应用化工 2024年第4期53卷 974-977,981页

作者：程帅倪泽南郭玉鑫张启俭辽宁工业大学化学与环境工程学院辽宁锦州121001

综述了WO_(3)在处理污染物中的光催化作用机理并进行了系统的总结,介绍了提高WO_(3)在处理污染物中光催化活性的主要策略,如掺杂元素、负载、半导体复合等。指出了WO_(3)基光催化剂的发展前景。综述可为低成本、高效的新型WO_(3)基光催... 详细信息

综述了WO_(3)在处理污染物中的光催化作用机理并进行了系统的总结,介绍了提高WO_(3)在处理污染物中光催化活性的主要策略,如掺杂元素、负载、半导体复合等。指出了WO_(3)基光催化剂的发展前景。综述可为低成本、高效的新型WO_(3)基光催化剂的设计提供改进方法和研究方向,以满足高效利用太阳能降解在环境净化领域的应用前景。

关键词： WO_(3) 光催化降解污染物

在线全文

学校读者我要写书评

暂无评论

基于隔震技术的地铁车辆段跨缝技术应用研究

河南城建学院学报 2024年第3期33卷 47-55页

作者：张健琦徐继东崔家春顾伟华华东建筑集团股份有限公司上海200041

提出了一种基于隔震技术的地铁车辆段跨缝设计方案,通过隔震转换的方式实现地铁车辆段盖上结构的开发,有效避免了盖下结构缝对盖上结构造成的限制。在车辆段的顶部设置隔震转换层,并调整隔震支座的布置和参数使盖上结构在跨越盖下结构... 详细信息

提出了一种基于隔震技术的地铁车辆段跨缝设计方案,通过隔震转换的方式实现地铁车辆段盖上结构的开发,有效避免了盖下结构缝对盖上结构造成的限制。在车辆段的顶部设置隔震转换层,并调整隔震支座的布置和参数使盖上结构在跨越盖下结构缝时能够满足温度、地震引起的变形要求,确保结构的安全性和使用功能。以上海某车辆段工程为依托,对所提跨缝技术方案进行研究,结果表明,采用隔震转换的方式可以实现盖上结构的跨缝布置,使盖上建筑的布局更加灵活,有利于地铁车辆段盖上建筑的高质量开发。

关键词：跨缝技术地铁车辆段隔震支座结构缝温度应力隔震转换抗震性能

Investigating Periodic Dependencies to Improve Short-Term Load Forecasting

在线全文

学校读者我要写书评

暂无评论

Energy Engineering 2024年第3期121卷 789-806页

作者： Jialin Yu Xiaodi zhang qi Zhong jian Feng State Grid Zhejiang Jiaxing Electric Power Co. Ltd.Jiaxing314000China State Grid Zhejiang Electric Power Co. Ltd.Hangzhou310000China

With a further increase in energy flexibility for customers,short-term load forecasting is essential to provide benchmarks for economic dispatch and real-time alerts in power *** electrical load series exhibit periodic patterns and share high associations with metrological ***,current studies have merely focused on point-wise models and failed to sufficiently investigate the periodic patterns of load series,which hinders the further improvement of short-term load forecasting ***,this paper improved Autoformer to extract the periodic patterns of load series and learn a representative feature from deep decomposition and *** addition,a novel multi-factor attention mechanism was proposed to handle multi-source metrological and numerical weather prediction data and thus correct the forecasted electrical *** paper also compared the proposed model with various competitive *** the experimental results reveal,the proposed model outperforms the benchmark models and maintains stability on various types of load consumers.

关键词： Load forecasting transformer attention mechanism power grid

Evaluation of lightning-induced overvoltage on a 10 kV distribution line based on electromagnetic return-stroke model using finite-difference time-domain

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Voltage 2024年第2期9卷 356-366页

作者： Pan Duan Lianfang zhang Xiaogang Huang jian Sun Yue qi qing Yang School of Automation Chongqing University of Posts and TelecommunicationsChongqingChina Chongqing Power Co Tongnan BurChongqingChina China Southern Power Grid Science Research Institute GuangzhouChina State Key Laboratory of Power Transmission Equipment&System Security and New Technology Chongqing UniversityChongqingChina

Accurate simulation of lightning-induced overvoltage for overhead distribution lines is helpful to prevent lightning trip *** electromagnetic return-stroke model was used to represent lightning and then a 3D finite-difference time-domain(FDTD)method was adopted to simulate the lightning-induced overvoltage on a distribution line without a field-line coupling *** lightning-induced overvoltage behave for different ground conductivity and varying distance between the distribution line and the lightning channel was *** results showed that the overvoltage waveforms at the centre point of the line corresponding to lightning strikes on the lossy ground and an ideal ground(σ=∞)were similar;however,the peak amplitudes of the waveform were affected by soil conductivity at a close *** relationship between magnitude of the overvoltage and distance can be described by a second-order exponential decay ***,the overvoltage calculated using the proposed model was compared with those obtained based on Agrawal's model and measurements made using the newly developed intelligent insulator on *** these comparisons,it could be concluded that the FDTD method with the electromagnetic return-stroke model produces reasonably accurate results of the attenuated oscillation waveform,which can better reproduce the overvoltage on operational distribution lines.

关键词： lightning distribution return

Heterointerface engineering of rhombic Rh nanosheets confined on MXene for efficient methanol oxidation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第6期93卷 419-428,I0011页

作者： qi zhang Quanguo jiang Xiang Yang Chi zhang jian zhang Lu Yang Haiyan He Guobing Ying Huajie Huang College of Materials Science and Engineering Hohai UniversityNanjing 210098JiangsuChina New Energy Technology Engineering Lab of jiangsu Province College of ScienceNanjing University of Posts&Telecommunications(NUPT)Nanjing 210023JiangsuChina School of Materials Science and Engineering Southeast UniversityNanjing 211100JiangsuChina

Although metallic rhodium(Rh)is regarded as a promising platinum-alternative anode catalyst of direct methanol fuel cell(DMFC),the conventional"particle-to-face"contact model between Rh and matrix largely limits the overall electrocatalytic performance due to their insufficient cooperative ***,we report a controllable and robust heterointerface engineering strategy for the bottom-up fabrication of rhombic Rh nanosheets in situ confined on Ti_3C_(2)T_x MXene nanolamellas(Rh NS/MXene)via a convenient stereoassembly *** unique design concept gives the resulting 2D/2D Rh NS/MXene heterostructure intriguing textural features,including large accessible surface areas,strong"face-toface"interfacial interactions,homogeneous Rh nanosheet distribution,ameliorative electronic structure,and high electronic *** a consequence,the as-prepared Rh NS/MXene nanoarchitectures exhibit exceptional electrocatalytic methanol oxidation properties in terms of a large electrochemically active surface area of 126.2 m~2 g_(Rh)~(-1),a high mass activity of 1056.9 mA mg_(Rh)-~1,and a long service life,which significantly outperform those of conventional particle-shaped Rh catalysts supported by carbon black,carbon nanotubes,reduced graphene oxide,and MXene matrixes as well as the commercial Pt nanoparticle/carbon black and Pd nanoparticle/carbon black catalysts with the same noble metal loading *** functional theory calculations further demonstrate that the direct electronic interaction at the well-contacted 2D/2D heterointerfaces effectively enhances the adsorption energy of Rh nanosheets and induces a left shift of the d-band center,thereby making the Rh NS/MXene configuration suffer less from CO *** work highlights the importance of rational heterointerface design in the construction of advanced noble metal/MXene electrocatalysts,which may provide new avenues for developing the next-generation DMFC devices.

关键词： Rhodium nanosheet Ti_(3)C_(2)T_(x)MXene Heterointerface Electrocatalyst Fuel cell

Cosmological Constraints on Neutrino Masses in Light of JWST Red and Massive Candidate Galaxies

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2024年第4期24卷 7-12页

作者： jian-qi Liu Zhi-qi Huang Yan Su School of Physics and Astronomy Sun Yat-sen UniversityZhuhai 519082China CSST Science Center for the Guangdong-Hong Kong-Macao Greater Bay Area Zhuhai 519082China

The overabundance of the red and massive candidate galaxies observed by the James Webb Space Telescope(JWST)implies efficient structure formation or large star formation efficiency at high redshift z~*** the scenario of a low or moderate star formation efficiency,because massive neutrinos tend to suppress the growth of structure of the universe,the JWST observation tightens the upper bound of the neutrino *** A cold dark matter cosmology and a star formation efficiency∈[0.05,0.3](flat prior),we perform joint analyses of Planck+JWST and Planck+BAO+JWST,and obtain improved constraints∑m_(ν)<0.196 eV and ∑m_(ν)+<0.111 eV at 95% confidence level,*** on the above assumptions,the inverted mass ordering,which implies ∑m_(ν)≥0.1 eV,is excluded by Planck+BAO+JWST at 92.7% confidence level.

关键词： (cosmology:)cosmological parameters galaxies:abundances galaxies:formation neutrinos

Recent advances in multifunctional shape memory photonic crystals and practical applications

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第1期17卷 79-96页

作者： Yong qi Shufen zhang State Key Laboratory of Fine Chemicals Frontier Science Center for Smart MaterialsDalian University of TechnologyDalian 116024China

Shape memory photonic crystals(SMPCs)are smart composite materials with changeable structural color integrated by shape memory polymer and photonic *** can produce one or more temporary shapes through nanoscale deformation,memorizing current *** can be recovered to their original shapes or some intermediate states under external stimuli,accompanied by the variation of structural *** porous carriers with built-in sensing properties,SMPCs promoted the interdisciplinary development of nanophotonic technology in materials science,environmental engineering,biomedicine,chemical engineering,and ***,the recent progress on multifunctional SMPCs and practical applications,including traditional and cold programmable SMPCs,is summarized and *** primary concern is shape programming at the nanoscale that has demonstrated numerous attractive functions,including smart sensing,ink-free printing,solvent detection,reprogrammable gradient wetting,and controllable bubble transportation,under variations of the surface *** aims to figure out the nanoscale shape memory effects on structural color conversion and additional performance,inspiring the fabrication of the next generation of ***,perspectives on future research directions and applications are also *** is believed that multifunctional SMPCs are powerful nanophotonic tools for the interdisciplinary development of numerous disciplines in the future.

关键词： photonic crystal shape memory structural color cold programmable shape recovery

Asymmetric reversible structural switching of a diene coordination polymer promoted by UV-visible light

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2024年第2期67卷 536-541页

作者： Yong Wang qiaoqiao zhang Yong-Yong Cao qi Liu Brendan F.Abrahams jian-Ping Lang College of Chemistry Chemical Engineering and MaterialsSoochow UniversitySuzhou215123China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai200032China College of Biological Chemical Science and EngineeringJiaxing UniversityJiaxing314001China School of Chemistry University of MelbourneVictoria3010Australia

In natural and artificial systems,reversible reactions are commonly asymmetric with respect to the time scale and nature of the stimuli which drive the forward and backward *** applications for which switching behavior is required,it is desirable that the reversible reaction goes as close to symmetric as possible;however,such systems are ***,we report an example of ultraviolet(UV)-visible light-regulated asymmetric reversible structural switching involving a diene-based coordination polymer,CP1 and its monocyclobutane product,*** is possible to cycle at least ten times through a forward [2+2] photocycloaddition reaction and the reverse,photocleavage reaction.A single cycle can be completed within a few *** transformation is accompanied by fast and distinct fluorescence changes,arising from optimisation of the reaction *** functional theory calculations allow rationalisation of the asymmetric reversible transformation between CP1 and CP1a rather than between CP1 and its dicyclobutane product *** work provides a clear illustration of reversible structural switching which approaches symmetric behaviour with respect to reaction rate and *** insights gained from this work also assist in the design of fast,reversible switching materials.

关键词： asymmetrical reversible structural switching coordination polymer photocycloaddition UV-visible light-controlled fluorescence switching