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Perpendicularly assembled oriented electrospinning nanofibers based piezoresistive pressure sensor with wide measurement range

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nano Research 2024年第7期17卷 6493-6501页

作者： Xiaoxue Bi Zhigang Duan Xiaojuan Hou Shuo Qian Mengjiao Yuan Jiajun Hu Jie Zhang Yuchen Lu Yanli Liu Jian He Zhiling Peng Xiujian chou School of Mechanical and Electrical Engineering North University of ChinaTaiyuan 030051China Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China School of Software North University of ChinaTaiyuan 030051China School of Information and Communication Engineering North University of ChinaTaiyuan 030051China

With the rapid development of wearable electronics,flexible pressure sensors have attracted wide attention in human–computer interaction and intelligent ***,it is a challenge to achieve a sensor with high sensitivity,wide measurement range,and wearing ***,we develop an oriented electrospinning thermoplastic polyurethane/polyacrylonitrile(TPU/PAN)nanofibers(OETPN)based piezoresistive pressure sensor(PONPS)in which the active layer and the electrode are assembled *** interdigital electrode is fabricated by spraying silver nanowires(AgNWs)on the OETPN through a mask *** active layer is composed of OETPN coated with MXene,encapsulated on the electrode by polyurethane(PU)*** porous structure of nanofibers membrane broadens the measurement range of the *** oriented nanofibers as active layer can improve the sensitivity in low pressure,because oriented nanofibers without interweaving nanofibers are more compressible than disordered *** prepared using the spraying method creates nanoscale microstructure and increases *** perpendicular assembly has greater response between the active layer and the electrode than the parallel assembly to improve the *** sensor exhibits high sensitivity(6.71 kPa^(−1),0.02–2 kPa)and wide measurement range(0.02–700 kPa).The sensor can detect weak signals such as radial artery.A pressure array constructed precisely represents the distribution of *** intelligent throat is created by combining machine learning algorithms with the *** can detect and recognize subtle throat vibrations while speaking,achieving recognition accuracy up to 100%using support vector machine(SVM)for five words with different *** fabricated sensor shows promising prospects in personal healthcare and intelligent robots.

关键词： oriented nanofibers perpendicular assembly parallel assembly intelligent throat machine learning algorithms

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Half-precessional cycle revealed by environment magnetism of stalagmite in Shizhu Cave from southwestern China during the Last Glacial

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Journal of Earth Science 2024年

作者： Huihui Yang Yu-Min chou Xiuyang Jiang Wenyue Xia Hai Li Yi Zhong Jingyu Zhang Yaoqi He Tsai-Luen Yu Qingsong Liu Chuan-chou Shen College of Tourism and Air Service， Guizhou Minzu University Research Center for Future Earth， Taiwan University Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) School of Environment， Harbin Institute of Technology High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC)， Department of Geosciences， Taiwan University Key Laboratory of Humid Subtropical Eco-Geographical Processes， College of Geography Science， Fujian Normal University Center for Marine Magnetism (CM2)， Department of Ocean Science and Engineering， Southern University of Science and Technology

The environmental magnetic proxies of stalagmites hold significant potential for reconstructing regional hydroclimate changes by revealing the content and grain size of magnetic particles within stalagmites. In this study， we present the contents and grain sizes of magnetic particles within a stalagmite SZ-1， from Shizhu Cave in southwestern China from 70.4 to 22.3 thousand years ago (ka) during the last glacial period. Specifically， the parameters IRMsoft， soil-derived magnetic minerals， and ARM/SIRM (anhysteretic remanent magnetization/saturation isothermal remanent magnetization)， the ratio of fine magnetic particles to total ferrimagnetic particles preserved in stalagmite SZ-1， indicate the fluctuation of regional precipitation. Obvious half-precessional cycles are evident in these two proxies， indicating that hydroclimatic variations in southwestern China may predominantly arise from the heat and moisture transported from tropical oceans. These variations are likely influenced by shifts in the Intertropical Convergence Zone and fluctuations in the Asian summer monsoon.

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Flexible wide-range multidimensional force sensors inspired by bones embedded in muscle

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Microsystems & nanoengineering 2024年第3期10卷 49-61页

作者： Jie Zhang Xiaojuan Hou Shuo Qian Jiabing Huo Mengjiao Yuan Zhigang Duan Xiaoguang Song HuiWu Shuzheng Shi Wenping Geng Jiliang Mu Jian He Xiujian chou Science and Technology on Electronic Test and Measurement Laboratory North University of ChinaTaiyuan 030051China School of Software North University of ChinaTaiyuan 030051China School of Mechanical Engineering Hebei University of ArchitectureZhangjiakou 075000China HBIS Group Co.Ltd. Shijiazhuang 050023China

Flexible sensors have been widely studied for use in motion monitoring,human‒machine interactions(HMIs),personalized medicine,and soft intelligent ***,their practical application is limited by their low output performance,narrow measuring range,and unidirectional force ***,to achieve flexibility and high performance simultaneously,we developed a flexible wide-range multidimensional force sensor(FWMFS)similar to bones embedded in muscle *** adjustable magnetic field endows the FWMFS with multidimensional perception for detecting forces in different *** multilayer stacked coils significantly improved the output from theμV to the mV level while ensuring FWMFS *** optimized FWMFS exhibited a high voltage sensitivity of 0.227 mV/N(0.5–8.4 N)and 0.047 mV/N(8.4–60 N)in response to normal forces ranging from 0.5 N to 60 N and could detect lateral forces ranging from 0.2–1.1 N and voltage sensitivities of 1.039 mV/N(0.2–0.5 N)and 0.194 mV/N(0.5–1.1 N).In terms of normal force measurements,the FWMFS can monitor finger pressure and sliding trajectories in response to finger taps,as well as measure plantar pressure for assessing human *** plantar pressure signals of five human movements collected by the FWMFS were analyzed using the k-nearest neighbors classification algorithm,which achieved a recognition accuracy of 92%.Additionally,an artificial intelligence biometric authentication system is being developed that classifies and recognizes user *** on the lateral force measurement ability of the FWMFS,the direction of ball movement can be distinguished,and communication systems such as Morse Code can be *** research has significant potential in intelligent sensing and personalized spatial recognition.

关键词： password Morse force

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Identifying the origin of porous evolution of microsized bismuth in potassium-ion batteries

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Science China Chemistry 2024年第7期67卷 2234-2239页

作者： Shenxu Chu Kaixiang Lei Qian Yang Jiaxin Li Yuqing Zhao Mengjia Gu Lin Li Xing Hu Yu Zhang Zhuo Chen Shuo Shi Shulei chou Shijian Zheng Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Materials Science and EngineeringHebei University of TechnologyTianjin 300401China Institute for Carbon Neutralization Technology College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325035China

Microsized bismuth(Bi)with in-situ constructed three-dimensional(3D)porous network has been considered as a promising anode for high-performance potassium-ion batteries(PIBs).However,the mechanism of the in-situ porous evolution of microsized Bi during the charge/discharge process is still ***,various electrolytes are employed to disclose the origin of porous evolution of microsized Bi in *** and theoretically,the 3D porous network originates from the uniform interfacial charge distribution on the Bi surface in the linear ether-based *** addition,the universality of the interfacial charge distribution mechanism was verified by microsized Sn and *** in-situ constructed 3D porous network of Bi enables a superior potassium storage performance in a wide temperature range from-40 to 40℃.More importantly,the K_(0.9)Mn_(0.7)Ni_(0.3)O_(2)||Bi full cell delivers excellent cycling stability(a high capacity retention of 88.44%even after 2,000 cycles)and good temperature *** work gives a distinct clarification of the origin of the porous evolution of microsized Bi during cycling,which is critical for developing high-performance PIBs.

关键词： potassium-ion batteries microsized Bi porous evolution linear ether-based electrolyte interfacial charge distribution

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孟子性善论的伦理使命

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东南大学学报（哲学社会科学版） 2024年第5期26卷 22-31,148页

作者：任丑西南大学国家治理学院重庆400715

孟子性善论试图打通天道与人道、真与善、外在环境与内在自我之间的鸿沟。此宏大的理论抱负集中体现为三大伦理使命:(一)人性存在论确立人性的本体根据,断定人性是人人生而固有的先天之心;(二)人性价值论肯定人性善是人性先天具有的、... 详细信息

孟子性善论试图打通天道与人道、真与善、外在环境与内在自我之间的鸿沟。此宏大的理论抱负集中体现为三大伦理使命:(一)人性存在论确立人性的本体根据,断定人性是人人生而固有的先天之心;(二)人性价值论肯定人性善是人性先天具有的、源自“四心”的道德价值,是不受任何外在因素影响的内在善,是人之为人的内在价值;(三)人性方法论主张人性善的实践程序是天道通过君子实践人道,也就是说,君子秉承天道,自觉地保持善、追求善、彰显善。孟子性善论既有其生命力与合理性,亦有其不足之处。其伦理使命的当下践行,尚需注入新的时代要素。

关键词：性善论人性存在论人性价值论人性方法伦理使命

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统筹发展和安全:中国国家治理实践与经验的世界价值

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北京行政学院学报 2024年第4期 49-60页

作者：丑则静国际关系学院国家安全学院北京100065

发展和安全是国家治理的基础议题及需要统筹实现的两大主要目标。党的十八大以来,以习近平同志为核心的党中央创造性地提出统筹发展和安全战略构想,坚持发展和安全并重,高质量发展和高水平安全动态平衡、良性互动的国家治理实践全面展... 详细信息

发展和安全是国家治理的基础议题及需要统筹实现的两大主要目标。党的十八大以来,以习近平同志为核心的党中央创造性地提出统筹发展和安全战略构想,坚持发展和安全并重,高质量发展和高水平安全动态平衡、良性互动的国家治理实践全面展开。从世界范围而言,发展和安全的价值目标得到普遍性认同,但发展和安全并未受到同等重视,发展与安全相互促进的治理实践也尚未实现。中国统筹发展和安全实践与经验的世界意义正不断凸显。中国相继提出并落实三大全球倡议,全面正视全球发展和安全问题的基础性地位,在统筹发展和安全的国家治理实践中不断探索,更好助力世界范围内发展与安全治理统筹互促。

关键词：统筹发展和安全国家治理时代价值实践要求三大全球倡议

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Light-Controlled Chemical Reaction Pathways in Disulfide-Based Nonequilibrium Systems

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CCS Chemistry 2024年第6期6卷 1571-1580页

作者： Yingshuai Zhao Peng Zhao Jingyi Zhang Yuanfeng Zhao Bohan Li Guoxiu Hao Yuanyuan An Wei Zhou Yan Lu Lien-Yang chou Yijun Zheng School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210

Pathway selection in a complex chemical reaction network(CRN)enables organisms to adapt,evolve,and even learn in response to changing *** by this,herein we report an artificial system,where light signal was used to manipulate the reaction pathways in a disulfide-based nonequilibrium *** changing the photon energy and irradiation window,the anion or new radical-mediated pathways were selectively triggered,resulting in a user-defined evolution *** photodissipative cycles were achieved by UV(365 nm)irradiation,increasing the total number of reactions from 3 to *** emerging pathway selection of the CRN is accurately predictable and controllable even in complex organo-hydrogel *** demonstrate up to five-state autonomous sol-gel transitions and the formation of fuel-driven dissipative organo-hydrogel through both chemical and light *** work represents a new approach to allowing CRNs to communicate with the environment that can be used in the development of materials with lifelike behaviors.

关键词： chemical reaction networks light regulation kinetic control pathway selection disulfide

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游戏教学法在汉语初级口语课中的应用研究 ——以马来西亚诗巫技职学院为例

游戏教学法在汉语初级口语课中的应用研究 ——以马来西亚诗巫技...

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作者： CHRISTINE SIA chou ENG（谢周訇）河北大学

学位级别：硕士

人际关系是否融洽,口语交际能力至关重要。如何提升学生的口语表达能力,是汉语作为第二语言教学中要思考的重要问题之一。游戏教学法,寓教于乐,将其应用于汉语口语课堂,可以激发学生学习的兴趣。论文将理论与实践相结合,以作者在马来西... 详细信息

人际关系是否融洽,口语交际能力至关重要。如何提升学生的口语表达能力,是汉语作为第二语言教学中要思考的重要问题之一。游戏教学法,寓教于乐,将其应用于汉语口语课堂,可以激发学生学习的兴趣。论文将理论与实践相结合,以作者在马来西亚诗巫技职学院所执教的2022级四年级烹饪班为研究对象,运用游戏教学法设计了具体的教学方案,并以《汉语》I中第四课的内容为基础进行了教学实践。通过调查问卷和口语测试的方法,对游戏教学法在教学中的效果进行了评估。研究结果表明,游戏教学法在激发学习兴趣、促进同学间关系融洽、丰富教学形式等方面具有显著的帮助效果。这一方法不仅增强了课堂互动,还为汉语教学提供了新思路,对推广汉语作为第二语言教学具有重要价值。但是经过教学实践也发现其应用过程中容易出现游戏目标模糊、时长不易掌控、及游戏类型选择不当等各种问题。针对上述问题,从游戏设计、游戏实施和口语测试三个阶段提出一些建议。教师必须要有精准的时间规划,以确保教学内容能在规定的时间内顺利完成,这包括提前制定游戏规则,并在课堂上清晰地解释,从而节省时间并确保学生能够全面理解游戏的要求和规则。除此之外,教师在实行游戏教学法时应考虑教学目标和内容,这是教师设计游戏时应该特别注意的关键点。这意味着教师需要在设计游戏时明确教学目标,并确保游戏的每个环节都与这些目标紧密相关,使学生在游戏过程中能够获得足够的语言输入和实践机会,并最终达到教学目标。最后,希望此研究可以为职业院校的汉语口语教学提供参考。

关键词：游戏教学法马来西亚技职学院初级汉语口语课

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Study of Reducing Non-Ideal Effects Based on TiN Sensitive Electrode with Front-End Offset Circuit

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稀有金属材料与工程 2006年第A3期35卷 248-249页

作者： Jung-Chuan chou Cheng-hsin Liu Graduate School of Electronic Engineering National Yunlin University of Science and TechnologyDouliouTaiwan 640China

The structure of the extended gate ion sensitive field effect transistor (EGISFET) is similar to the structure of the ion sensitive field effect transistor (ISFET).Moreover,the non-ideal effect of EGISFET is the main impediment to development of commercial processes for sensitive *** is necessary to promote the stability and reliability of the devices by employing calibration circuits and the better fabrication *** temporal drift exists in the entire measurement experiment. Furthermore,in this study we can reduce the temporal drift effect which influences the stability of the TiN sensitive electrode with the differential front-end offset *** measurement system combines with shifting circuit,differential and instrument *** employ the calibration circuit to compare with the variations of the output voltage,and expectably improve the stability and reliability of the TiN sensitive electrode by the novel calibration circuit.

关键词： TiN sensitive electrode stability reliability temporal drift effect front-end offset circuit

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Distinct Cytoskeletal Injuries Induced by As,Cd,Co,Cr,and Ni Compounds

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Biomedical and Environmental Sciences 1989年第4期2卷 358-365页

作者： IIH-nan chou Departments of Microbiology and Pathology Boston University School of Medicine80 East Concord StreetBostonMassachusetts 02118

The risks of metal compounds to human health are highlighted by the ubiquity of exposure and their persistence in the *** compounds of As,Cd,Co,Cr,and Ni are known or“reasonably anticipated”to be carcinogenic to humans and/or experimental animals, the cellular targets of these health hazards and the underlying mechanisms of their carcinogenic- ity are still *** show in this report that dramatic,time-and dose-dependent cytoskeletal perturbations,especially in the distribution and organization patterns of microtubules and mi- crofilaments,two of the principal components of the cytoskeleton,occurred in 3T3 cells upon exposure to these metal *** metal salt appeared to induce a different,typical pattern of cytoskeletal injury,probably reflecting the specificity of action of each metal *** results suggest that the cytoskeleton can indeed act as a target for injury by epigenetic carcinogenic metal compounds in the *** findings should help our efforts to understand the mechanisms of action of metal compounds at the subcellular and molecular levels.1989 Academic Press,Inc.

关键词： MT Distinct Cytoskeletal Injuries Induced by As,Cd,Co,Cr,and Ni Compounds MF NISO As Cr Ni

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