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Permeable carbon fiber based thermoelectric film with exceptional EMI shielding performance and sensor capabilities

Journal of Advanced Ceramics 2024年第8期13卷 1119-1131页

作者： Junjie Zhu Chuan Sun wanlin Feng Mengran Chen Peng-An Zong Chunlei Wan College of Materials Science and Engineering Nanjing Tech UniversityNanjing 211800China Nationai Innovation Institute of Defense Technology Academy of Military Sciences of the People's Liberation Army of ChinaBeijing 100089China Institute of Nuclear Physics and Chemistry Innovation Research Team for Advanced CeramicsChina Academy of Engineering PhysicsMianyang 621900China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Thermoelectric(TE)technologies offer a promising approach for directly converting skin heat into electricity for wearable *** p-type Sb2Tes and n-type BizTes as top-performing materials at room temperature,their rigid inorganic structure,with ultralow moisture permeability,poses challenges in warm and humid conditions,fostering bacterial growth and potential skin *** address this issue,we developed a cross-linked core-shell structure by electrodepositing Sb_(2)Te_(3)(Bi_(2)Te_(3))onto carbon fiber(CF).This architecture significantly improved the electrical conductivity and the Seebeck coefficient,resulting in a remarkable 300-fold increase in the power factor compared to that of pure *** CF/Sb_(2)Te_(3) and CF/Bi2Te films demonstrated optimal power factors of 450 and 121μW·m^(-1)·K^(-2),***,the fabricated films exhibited outstanding moisture permeability,over 3000 g·m^(-2)·d^(-1),exceptional electromagnetic interference shielding efficiency approaching 93 dB,and versatility as sensors for language assistance and respiratory *** attributes underline their broad applicability,emphasizing their suitability for human health protection in diverse scenarios.

关键词： thermoelectric(TE) carbon fiber(CF) Bi_(2)Te_(3) electrodeposition moisture permeability electromagnetic interference shielding

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Finite Groups with Some Self-Conjugate-Permutable Subgroups

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Journal of Mathematical Research with Applications 2024年第2期44卷 199-208页

作者： wanlin WANG Pengfei GUO School of Mathematics and Statistics Hainan Normal University

A subgroup H of a group G is said to be self-conjugate-permutable if H Hx= HxH implies Hx= H for any x of G. A finite group G is called an SC-group(P SC-group, respectively)if all cyclic subgroups of G of order 2 or order 4(prime order or order 4, respectively) are selfconjugate-permutable in G. In this paper, we first investigate the structure of finite non-solvable groups all of whose second maximal subgroups are SC-groups; then we mainly investigate the structure of finite groups in which all of maximal subgroups of even order are P *** fact, we describe the structure of finite groups which are not P SC-groups but all of whose maximal subgroups of even order are P SC-groups.

关键词： SC-group PSC-group self-conjugate-permutable subgroup maximal subgroup

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Effect of phosphorus content on interfacial heat transfer and film deposition behavior during the high-temperature simulation of strip casting

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1016-1025页

作者： wanlin Wang Cheng Lu Liang Hao Jie Zeng Lejun Zhou Xinyuan Liu Xia Li Chenyang Zhu School of Metallurgy and Environment Central South UniversityChangsha 410083China National Center for International Research of Clean Metallurgy Central South UniversityChangsha 410083China Institute of Research of Iron and Steel ShasteelJiangsu ProvinceZhangjiagang 215625China

The interfacial wettability and heat transfer behavior are crucial in the strip casting of high phosphorus-containing steel.A hightemperature simulation of strip casting was conducted using the droplet solidification technique with the aims to reveal the effects of phosphorus content on interfacial wettability,deposited film,and interfacial heat transfer *** showed that when the phosphorus content increased from 0.014wt%to 0.406wt%,the mushy zone enlarged,the complete solidification temperature delayed from1518.3 to 1459.4℃,the final contact angle decreased from 118.4°to 102.8°,indicating improved interfacial contact,and the maximum heat flux increased from 6.9 to 9.2 MW/*** the phosphorus content from 0.081wt%to 0.406wt%also accelerated the film deposition rate from 1.57 to 1.73μm per test,resulting in a thickened naturally deposited film with increased thermal resistance that advanced the transition point of heat transfer from the fifth experiment to the third experiment.

关键词： strip casting interfacial heat transfer interfacial wettability naturally deposited film phosphorus content

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18世纪中后期朝鲜教科书《汉语抄》中的东北官话词汇考证

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民族语文 2022年第6期 102-110页

作者：金哲俊郜婉琳延边大学朝汉文学院延吉300072 吉林外国语大学长春133002

明清时期中国与朝鲜交流频繁,汉语北方官话成为朝鲜学习的重要对象。根据实际需要,朝鲜刊行了朝鲜语、汉语对译词汇系列书籍,其中,成书于18世纪中后期的《汉语抄》收录了5097条近代汉语词汇。这些词汇涉及汉语多个方言,是研究明清时期... 详细信息

明清时期中国与朝鲜交流频繁,汉语北方官话成为朝鲜学习的重要对象。根据实际需要,朝鲜刊行了朝鲜语、汉语对译词汇系列书籍,其中,成书于18世纪中后期的《汉语抄》收录了5097条近代汉语词汇。这些词汇涉及汉语多个方言,是研究明清时期汉语方言词汇的珍贵材料。本文借助有关工具书,梳理出47条汉语东北官话词汇并对其中的11条进行了考证。

关键词：朝鲜语《汉语抄》近代汉语词汇汉语方言东北官话

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基于WebGIS的农业科技成果价值评估系统研究

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农业机械学报 2017年第3期48卷 238-244页

作者：陈雪瑞贾敬敦高万林任延昭中国农业大学现代精细农业系统集成研究教育部重点实验室北京100083 中国农村技术开发中心北京100045

为了促进农业科技成果交易,加快农业科技成果转化,将WebGIS技术与综合模糊评价模型相结合,设计并开发了基于WebGIS的农业科技成果价值评估系统。系统实现了农业科技成果时空数据的存储与管理、农业科技成果价值评估、价值评估结果时空... 详细信息

为了促进农业科技成果交易,加快农业科技成果转化,将WebGIS技术与综合模糊评价模型相结合,设计并开发了基于WebGIS的农业科技成果价值评估系统。系统实现了农业科技成果时空数据的存储与管理、农业科技成果价值评估、价值评估结果时空特征分析以及结果的可视化,为农业科技成果管理部门提供了一个集数据管理与时空分析为一体的工具。研究构建了价值评估三级指标体系,综合考虑技术、效益和市场三方面因素对农业科技成果进行综合价值评估,能够为农业科技成果的转化交易提供参考。

关键词：农业科技成果 WebGIS 价值评估

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DBSCAN算法优化及在村镇管理决策中的应用

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农业机械学报 2016年第10期47卷 346-350页

作者：彭波史春雷高万林中国农业大学信息与电气工程学院北京100083

作为空间数据挖掘技术中的一种,带有噪声的空间聚类应用算法(DBSCAN算法)是基于密度的聚类算法,其可以从空间数据库中发现任意形状的聚类。本文研究了基于密度的空间聚类算法优化原理及实现过程,分析了原始DBSCAN算法存在的问题,通过避... 详细信息

作为空间数据挖掘技术中的一种,带有噪声的空间聚类应用算法(DBSCAN算法)是基于密度的聚类算法,其可以从空间数据库中发现任意形状的聚类。本文研究了基于密度的空间聚类算法优化原理及实现过程,分析了原始DBSCAN算法存在的问题,通过避免公共领域对象的重复查询,减少对核心对象邻域查询的计算,优化后算法的时间效率提高了33.73%。将优化后的DBSCAN算法应用于村镇网格化管理,可对网格化管理系统中的数据记录进行有效挖掘,为村镇管理工作提供信息和辅助决策。

关键词：数据挖掘空间聚类村镇管理 DBSCAN算法

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Mechanism of water-evaporation-induced electricity beyond streaming potential

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Nano Research Energy 2024年第2期3卷 12-19页

作者： Sunmiao Fang Huan Lu Weicun Chu wanlin Guo State Key Laboratory of Mechanics and Control of Mechanical Structures Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of EducationNanjing University of Aeronautics and AstronauticsNanjing 210016China College of Aerospace Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China Institute for Frontier Science Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Since its first discovery in 2017,evaporation-induced electricity has attracted extensive attention and shown significant advantages in green energy *** the streaming potential-related electrokinetic effect has been intensively explored and widely recognized as the underlying mechanism,the role of coupling between water molecules and charge carriers in the material remains *** we show through carefully designed experiments that the streaming potential effect indeed plays a role but can only contribute about half to the total water-evaporation-induced voltage occurring within the partially-wetted region of the carbon black film where the solid-liquid-gas three-phase interface *** is also shown that water evaporation from carboxyl and amino-functionalized carbon black films produces opposite voltage *** first-principles calculations unveil that the adsorption of water molecules can lead to reversed charge transfer in the carboxyl and amino-functionalized carbon ***,an evaporation-driven charge transport mechanism is proposed for the induced electricity mediated by the coupling between water molecules and charge carriers in the *** results reveal the important role of direct interaction between water molecules and materials,deepening our understanding of the mechanism for evaporation-induced hydrovoltaic effect beyond streaming potential.

关键词： evaporation-induced electricity streaming potential hydrovoltaic effect charge transfer

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基于Logistic映射的小波域图像加密技术

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中国农业大学学报 2006年第3期11卷 98-100页

作者：胡梅高万林中国农业大学信息与电气工程学院北京100083

针对图像小波编码混沌加密技术中出现的边界效应问题,提出基于区间小波编码的混沌加密新技术。相对于传统的图像延拓方法,该方法在小波变换前后,不需要对图像进行特殊的延拓处理,可在对图像加密的同时,压缩图像文件规模,有效消除边界效... 详细信息

针对图像小波编码混沌加密技术中出现的边界效应问题,提出基于区间小波编码的混沌加密新技术。相对于传统的图像延拓方法,该方法在小波变换前后,不需要对图像进行特殊的延拓处理,可在对图像加密的同时,压缩图像文件规模,有效消除边界效应;此外,调整被逼近信号函数的H lder连续指数L的大小,可满足对图像恢复精度的不同要求。实验结果表明,在L=1时,信号恢复精度已满足要求。

关键词：区间小波混沌加密边界效应

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Nano-frictional mechano-reinforcing porous nanowires scaffolds

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Friction 2024年第5期12卷 968-980页

作者： Licheng HUA Conghu HU Jingkang ZHANG Jin LI Chenjie GU Bin HUANG Guangyong LI Jianke DU wanlin GUO Smart Materials and Advanced Structures Laboratory School of Mechanical Engineering&MechanicsNingbo UniversityNingbo315211China Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education Nanjing University of Aeronautics and AstronauticsNanjing210016China Key Laboratory of Impact and Safety Engineering Ministry of EducationSchool of mechanical Engineering and MechanicsNingbo UniversityNingbo315211China Department of Microelectronics and Engineering Ningbo UniversityNingbo315211China

Artificial biomaterials with dynamic mechano-responsive behaviors similar to those of biological tissues have been drawing great *** this study,we report a TiO_(2)-based nanowire(TiO_(2)NWs)scaffolds,which exhibit dynamic mechano-responsive behaviors varying with the number and amplitude of nano-deformation *** is found that the elastic and adhesive forces in the TiO_(2)NWs scaffolds can increase significantly after multiple cycles of *** nanofriction experiments show the triboelectric effect of increasing elastic and adhesive forces during the nano-deformation cycles of TiO_(2)NWs *** properties allow the TiO_(2)NW scaffolds to be designed and applied as intelligent artificial biomaterials to simulate biological tissues in the future.

关键词： TiO_(2)NWs scaffolds nano-deformation mechano-reinforcing triboelectric effect intelligent artificial biomaterials

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RESEARCH OF TASK SCHEDULING BASED ON PERFORMANCE UNDER GRID ENVIRONMENT

RESEARCH OF TASK SCHEDULING BASED ON PERFORMANCE UNDER GRID ...

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World Automation Congress 2010

作者： ZILI LIU wanlin gao JIANQIN WANG XIANG SUN SIMON SEE YING YANG LINA YU College of Information and Electrical Engineering China Agricultural University National Engineering Research Center for Information Technology in Agriculture Asia Pacific Science and Technology Center Nanyang Technological University

Grid computing is a special kind of branch network computing which has important innovative ideas and great potential of *** forms a large use of each other and co-operation high-performance computing network by interconnecting a number of computing resources,data resources of the wide area network as well as other *** grid system is heterogeneous and dynamic,and the different resource requires of the applications running on grid system,grid task scheduling is extremely ***,how to syncopate the task will directly affect the overall scheduling performance of the task in a grid *** implementation process,different tasks need different resource,this article mainly aims at the demand of CPU and memory to establish a performance evaluation *** the evaluation results of CPU and memory,establish a rational task segmentation strategy to improve the quality of service,and realize grid load balancing,low communication complexity and high reliability between tasks,which achieve the purpose of minimizing the task execution time.

关键词： grid task scheduling performance task-segmentation

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