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MoS_(2) nanoflowers and PEDOT:PSS nanocomposite enabling wearable dual-mode pressure sensors

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Science China(Technological Sciences) 2024年第6期67卷 1737-1747页

作者： wang FengMing YANG WeiJia MA Ke SHEN GengZhe SU DaoJian LI BaiJun wang ShuangPeng QIN BoLong ZHANG Chi XIN Yue CAO XiaoBing HE Xin School of Applied Physics and Materials Wuyi UniversityJiangmen529020China Biomaterials R&D Center Zhuhai Institute of Advanced TechnologyChinese Academy of SciencesZhuhai519003China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao999078China

A versatile sensing platform employing inorganic MoS_(2) nanoflowers and organic poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)(PEDOT:PSS)has been investigated to develop the resistive and capacitive force-sensitive *** microstructure of the sensing layer heightens the sensitivity and response time of the dual-mode pressure sensors by augmenting electron pathways and inner stress in response to mechanical ***,the capacitive and resistive sensors exhibit sensitivities of 0.37 and 0.12 kPa^(-1),respectively,while demonstrating a remarkable response time of approximately 100 ***,it is noteworthy that the PEDOT:PSS layer exhibits excellent adhesion to polydimethylsiloxane(PDMS)substrates,which contributes to the development of highly robust force-sensitive sensors capable of enduring more than 10000loading/unloading *** combination of MoS_(2)/PEDOT:PSS layers in these dual-mode sensors has shown promising results in detecting human joint movements and subtle physiological ***,the sensors have achieved a remarkable precision rate of 98%in identifying target *** outcomes underscore the significant potential of these sensors for integration into applications such as electronic skin and human-machine interaction.

关键词： MoS_(2)/PEDOT:PSS nanocomposite force-sensitive sensor multi-scaled microstructure physiological signals monitoring object grasping recognition

面向计算思维培养的算法学习过程导向样例设计与迁移效果研究

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现代教育技术 2024年第8期34卷 69-78页

作者：王悦张冠文山东师范大学教育学部山东济南250014 山东师范大学新闻与传媒学院山东济南250014

算法与程序设计课程是中小学培养学生计算思维的主要方式,在教学中普遍采用样例教学法,并以能达到良好的算法迁移为检验目标。然而,教学实践和研究中的程序样例设计多从编程语言的语法语义出发,围绕代码的组织展开讨论,缺乏问题解决过... 详细信息

算法与程序设计课程是中小学培养学生计算思维的主要方式,在教学中普遍采用样例教学法,并以能达到良好的算法迁移为检验目标。然而,教学实践和研究中的程序样例设计多从编程语言的语法语义出发,围绕代码的组织展开讨论,缺乏问题解决过程和策略两方面的整合。基于此,文章提出面向计算思维培养的算法学习过程导向样例模型,并通过实证研究检验其对算法迁移的效果。研究发现,面向计算思维培养的算法学习过程导向样例能够有效促进学生的算法迁移绩效,且相对于子目标样例对低计算思维学生的远迁移绩效有显著的促进效果。此外,文章还针对结果提出程序样例设计建议,以期为计算教育和算法教学资源设计提供参考。

关键词：计算思维样例学习算法迁移问题解决

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Constructing highly safe and long-life calcium ion batteries based on hydratedvanadium oxide cathodes featuring a pillar structure

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Rare Metals 2024年第6期43卷 2597-2612页

作者： Chun-Fang wang Shi-Wei Zhang Lan Huang Yuan-Min Zhu Feng Liu Jian-Chuan wang Li-Ming Tan Chun-Yi Zhi Cui-Ping Han Powder Metallurgy Research Institute Central South UniversityChangsha410083China Songshan Lake Materials Laboratory Dongguan 523808China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China Department of Materials Science and Engineering City University of Hong KongHong Kong 999077China Faculty of Materials Science and Energy Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

Calcium-ion batteries(CIBs)have generated intense interest due to the growing demand for safer,cheaper,and large-scale energy storage ***,their development is still in its infancy,owing to the lack of suitable cathodes for sustaining reversiblc Ca^(2+)intercalation/***,layered H_(2)V_(3)O_(8)(HVO)with Zn^(2+)pre-insertion(ZHVO)is reported as a high-rate and highly durable cathode material for *** existence of Zn^(2+)and H_(2)O pillars could expand the interlayer spacing up to 1.8 nm,which is favorable for the diffusion of bulky Ca^(2+).The formation of Zn-O bonds facilitates electron transfer and enhances electrical ***,the ZHVO cathode achieves superior capacity performance(213.9 mAh·g^(-1)at 0.2 A·g^(-1))and long lifespan(78.3%for 1,000 cycles at 5 A·g^(-1))compared to pristine *** functional theory(DFT)calculations revealed that Zn^(2+)moved during Ca^(2+)intercalation,thereby reducing the diffusion energy barrier and facilitating Ca^(2+)***,a safe aqueous calcium ion cell was successfully assembled.

关键词： Multivalent batteries Calcium-ion batteries Layered structure Vanadium oxide Cathode materials

Plastic mulch increases dryland wheat yield and water-use productivity,while straw mulch increases soil water storage

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Journal of Integrative Agriculture 2024年第9期23卷 3174-3185页

作者： Hubing Zhao Guanfei Liu Yingxia Dou Huimin Yang Tao wang Zhaohui wang Sukhdev Malhi Adnan Anwar Khan College of Natural Resources and Environment Northwest A&F UniversityYangling 712100China Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China Ministry of Agriculture and Rural AffairsYangling 712100China Department of Renewable Resources University of AlbertaEdmonton T6G 2H1Canada

Amplifying drought stress and high precipitation variability impair dryland wheat *** problems can potentially be minimized by using plastic mulch(PM)or straw mulch(SM).Therefore,wheat grain yield,soil water storage,soil temperature and water-use productivity of PM and SM treatments were compared with no mulch(CK)treatment on dryland wheat over a period of eight *** to the CK treatment,PM and SM treatments on average significantly increased grain yield by 12.6 and 10.5%,*** to the CK treatment,SM treatment significantly decreased soil daily temperature by 0.57,0.60 and 0.48℃ for the whole seasons,growing periods and summer fallow periods,*** contrast,compared to the CK treatment,PM treatment increased soil daily temperature by 0.44,0.51 and 0.27℃ for the whole seasons,growing periods and summer fallow periods,*** soil temperature under SM allowed greater soil water storage than under *** water storage pre-seeding was 17%greater under the SM than under the PM *** water storage post-harvest was similar for the PM and SM treatments,but evapotranspiration was 4.5%higher in the SM than in the PM ***,water-use productivity was 6.6%greater under PM than under the SM ***,PM treatment increased dryland wheat yield and water-use productivity,while straw mulch increased soil water storage.

关键词： plastic mulch soil water storage straw mulch water-use productivity winter wheat

Experimental Study on Gas Flow Uniformity in a Diesel Particulate Filter Carrier

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Fluid Dynamics & Materials Processing 2024年第1期20卷 193-204页

作者： Zhengyong wang Jianhua Zhang Guoliang Su Peixing Yang Xiantao Fan Shuzhan Bai Ke Sun Guihua wang School of Energy and Power Engineering Shandong UniversityJinan250061China State Key Laboratory of Engines Tianjin UniversityTianjin300072China Weichai Power Emission Solutions Technology Company Limited Weifang261043China China·Shandong·YYO Emission Control System Co. Ltd.Liaocheng252100China

A Diesel Particulate Filter(DPF)is a critical device for diesel engine exhaust products *** using active-regeneration purification methods,on the one hand,a spatially irregular gas flow can produce relatively high local temperatures,potentially resulting in damage to the carrier;On the other hand,the internal temperature field can also undergo significant changes contributing to increase this *** study explores the gas flow uniformity in a DPF carrier and the related temperature behavior under drop-to-idle(DTI)condition by means of bench *** is shown that the considered silicon carbide carrier exhibits good flow uniformity,with a temperature deviation of no more than 2%with respect to the same radius measurement point at the outlet during the regeneration *** the DTI test,the temperature is relatively high within r/2 near the outlet end,where the maximum temperature peak occurs,and the maximum radial temperature gradient is located between r/2 and the *** these quantities grow as the soot load increases,thereby making the risk of carrier burnout ***,it is shown that the soot load limit of the silicon carbide DPF can be extended to 11 g/L,which reduces the frequency of active regeneration by approximately 40%compared to a cordierite DPF.

关键词： DPF flow uniformity DTI silicon carbide carrier soot load

Face animation based on multiple sources and perspective alignment

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虚拟现实与智能硬件（中英文） 2024年第3期6卷 252-266页

作者： Yuanzong MEI wenyi wang Xi LIU Wei YONG Weijie WU Yifan ZHU Shuai wang Jianwen CHEN School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhou 324000China

Background Face image animation generates a synthetic human face video that harmoniously integrates the identity derived from the source image and facial motion obtained from the driving *** technology could be beneficial in multiple medical fields,such as diagnosis and privacy *** studies on face animation often relied on a single source image to generate an output *** a significant pose difference between the source image and the driving frame,the quality of the generated video is likely to be suboptimal because the source image may not provide sufficient features for the warped feature *** In this study,we propose a novel face-animation scheme based on multiple sources and perspective alignment to address these *** first introduce a multiple-source sampling and selection module to screen the optimal source image set from the provided driving *** then propose an inter-frame interpolation and alignment module to further eliminate the misalignment between the selected source image and the driving *** The proposed method exhibits superior performance in terms of objective metrics and visual quality in large-angle animation scenes compared to other state-of-the-art face animation *** indicates the effectiveness of the proposed method in addressing the distortion issues in large-angle animation.

关键词： Face animation Multiple-source driving Generative adversarial network Medical diagnostics

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一种水压驱动机器人关节动态特性分析及优化

机械设计与制造 2024年第5期399卷 338-344,350页

作者：王璐张文平无锡科技职业学院智能制造学院江苏无锡214028 江西理工大学电气工程与自动化学院江西赣州341000

为减小水压机器人关节尺寸,提出了一种体积小、输出力矩大的水压驱动的转角伺服机器人关节执行器。首先根据水压转角伺服机器人关节作动器的结构和工作原理,建立了关节作动器的数学模型,推导了关节作动器的控制方程并进行了线性化处理,... 详细信息

为减小水压机器人关节尺寸,提出了一种体积小、输出力矩大的水压驱动的转角伺服机器人关节执行器。首先根据水压转角伺服机器人关节作动器的结构和工作原理,建立了关节作动器的数学模型,推导了关节作动器的控制方程并进行了线性化处理,并建立了机器人关节执行器的AMESim模型,验证了线性化控制方程的可靠性,在此基础上根据输入角幅值、外部负载扭矩和水压对关节执行器进行优化,优化后的水压驱动机器人关节执行器具有位置跟踪精度高,动态响应快等优点。

关键词：水压伺服机器人关节作动器 AMESim模型动态响应位置跟踪

Disastrous effects of climate change on High Mountain Asia

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Advances in Climate Change Research 2024年第3期15卷 365-366页

作者： Peng CUI Yao-Ming MA Yan wang Bin-Binwang Institute of Geographic Sciences and Natural Resources Research The Chinese Academy of Sciences(CAS)Beijing 100101China Institute of Mountain Hazards and Environment CASChengdu 610041China China-Pakistan Joint Research Center on Earth Sciences CAS-HECIslamabad 45320Pakistan State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchCASBeijing 100101China

High Mountain Asia(HMA),encompassing the Tibetan Plateau and the surrounding high mountain ranges of the Hindu Kush and Tianshan,is a region characterised by large terrain,complex topography and the interplay of vario... 详细信息

关键词： terrain Tianshan Tibetan

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基于电泳沉积工艺的低黏附抗菌涂层的制备

精细化工 2024年第7期41卷 1535-1541页

作者：王瑶芝于丹凤文武钱钦吴旭广州大学化学化工学院广州大学精细化工研究所广东广州510006 北京师范大学珠海校区理工实验平台广东珠海519087 中国石油化工股份有限公司胜利油田分公司石油工程技术研究院山东东营257000

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、甲基丙烯酸二甲氨基乙酯(DMAEMA)、甲基丙烯酸羟丙酯(HPMA)和乙烯基硅油(Vi-PDMS)为单体,合成了乙烯基硅油改性聚丙烯酸酯。将其与六亚甲基二异氰酸酯三聚体(HDIT)固化剂共混,利用电泳沉积工艺... 详细信息

以甲基丙烯酸甲酯(MMA)、丙烯酸丁酯(BA)、甲基丙烯酸二甲氨基乙酯(DMAEMA)、甲基丙烯酸羟丙酯(HPMA)和乙烯基硅油(Vi-PDMS)为单体,合成了乙烯基硅油改性聚丙烯酸酯。将其与六亚甲基二异氰酸酯三聚体(HDIT)固化剂共混,利用电泳沉积工艺,阳离子树脂带动功能性单体定向移动到阴极表面与羟基反应并沉积,经过交联固化后,进一步负载纳米银杀菌剂,获得了兼具抗细菌黏附与杀菌功能的涂层。采用FTIR、^(1)HNMR、SEM对涂层进行了表征,采用光学接触角测量仪测试了涂层的水接触角和滑动角,对其抗细菌黏附性能及杀菌性能进行了测试。结果表明,成功合成了兼具低黏附与杀菌功能涂层。涂层表面具有优异的防油污、细菌及猪血黏附的能力,涂层对大肠杆菌和金黄色葡萄球菌的抗细菌黏附效果达到99.9%以上。即使经过强酸、强碱等极端环境以及摩擦3000次后,涂层表面仍具有优异的防液体黏附效果。

关键词：抗菌性低黏附涂层电泳沉积聚丙烯酸酯乙烯基硅油纳米银功能材料