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Solar-powered miniature robot for on-site oil spill treatment under magnetic steering

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Science China(Technological Sciences) 2024年第7期67卷 2164-2175页

作者： wang ben CHEN YunRui wang Yun JI FengTong LI HongYuan NIU ShiChao HAN ZhiWu ZHANG YaBin GUO ZhiGuang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures Ministry of Education Key Laboratory of New Processing Technology for Nonferrous Metals and Materialsand School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Key Laboratory for Bionic Engineering Ministry of Education Jilin UniversityChangchun 130022China Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Green Preparation and Application of Functional MaterialsHubei UniversityWuhan 430062China Wellcome Trust/Cancer Research UK Gurdon Institute University of CambridgeCambridge CB21QNUK Department of Physiology Development and NeuroscienceUniversity of CambridgeCambridge CB21QNUK State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceBeijing Innovation Center for Engineering Science and Advanced TechnologyCollege of EngineeringPeking UniversityBeijing 100871China

Walking on the water surface is an effective method for miniature robots to transport payloads with dramatically decreased interfacial drag. Current aquatic robots reported are generally actuated by a beam of focused light that can trigger asymmetrical deformation, enabling the directional movement through horizontal momentum transfer of photoinduced actuation force to the water. However, the operations are heavily dependent on manual manipulation of the focused light, making the long-term actuation and application of the aquatic robots in vast scenarios challenging. Herein, we developed a kind of water striderinspired robot that can autonomously manage the motion on the water surface under solar irradiation, with their direction steerable by a magnetic field. The motion of this bioinspired robot on the water surface was achieved by the use of a solar cell panel as a driving module to enable propulsive motion based on the conversion of light-electric-mechanical energies. The superhydrophobic design of its leg surfaces enables the aquatic robots with weight-bearing and drag-reducing abilities. With the assistance of magnetic navigation, the bioinspired robot can continuously and controllably locomote to the oily spill floating on the water body and collect them with high efficiency. For further demonstration, the treatment of oil spills in a campus pool with high efficiency has also been achieved. This on-site oil-spill treating strategy, taking advantage of a home-made bioinspired robot actuated by natural sunlight under magnetic steering, shows great potential applications in water-body remediation.

关键词： miniature robot superhydrophobic water strider interfacial friction magnetic actuation

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Polyzwitterionic cross-linked double network hydrogel electrolyte enabling high-stable Zn anode

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Nano Research 2024年第6期17卷 5278-5287页

作者： Mengyu Shi Junlong Zhang Guochuan Tang ben wang Sen wang Xiaoxian Ren Guojie Li Weihua Chen Chuntai Liu Changyu Shen State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China Research Institute of Interdisciplinary Science and School of Materials Science and Engineering Dongguan University of TechnologyDongguan 523808China

Zn metal anode suffers from dendrite issues and passive byproducts,which severely plagues the practical application of aqueous Zn metal ***,a polyzwitterionic cross-linked double network hydrogel electrolyte composed of physical crosslinking(hyaluronic acid)and chemical crosslinking(synthetic zwitterionic monomer copolymerized with acrylamide)is introduced to overcome these *** the one hand,highly hydrophilic physical network provides an energy dissipation channel to buffer stress and builds a H_(2)O-poor interface to avoid side *** the other hand,the charged groups(sulfonic and imidazolyl)in chemical crosslinking structure build anion/cation transport channels to boost ions’kinetics migration and regulate the typical solvent structure[Zn(H_(2)O)_(6)]^(2+)to R-SO_(3)^(−)[Zn(H_(2)O)_(4)]^(2+),with uniform electric field distribution and significant resistance to dendrites and parasitic *** on the above functions,the symmetric zinc cell exhibits superior cycle stability for more than 420 h at a high current density of 5 mA·cm^(−2),and Zn||MnO_(2)full cell has a reversible specific capacity of 150 mAh·g^(−1)after 1000 cycles at 2 C with this hydrogel ***,the pouch cell delivers impressive flexibility and cyclability for energy-storage applications.

关键词： Zn anode dendrites parasitic reactions polyzwitterion double network hydrogel electrolyte

Efficacy and safety of single microneedle radiofrequency *** therapy on moderate-to-severe acne vulgaris:A prospective,randomized,controlled study

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Chinese Medical Journal 2024年第8期137卷 1006-1008页

作者： Chuchu Huang Mengping Mao Yiran Peng ben wang Yuxuan Deng Hongfu Xie Dan Jian Department of Dermatology Xiangya HospitalCentral South UniversityChangshaHunan 410008China National Clinical Research Center for Geriatric Disorders Xiangya HospitalCentral South UniversityChangshaHunan 410008China Hunan Key Laboratory of Aging Biology Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Dermatology and Allergy and Christine Kühne-Center for Allergy Research and EducationUniversity Hospital of BonnD-53127BonnGermany

To the Editor:Acne vulgaris is a prevalent skin disorder affecting both physical and psychosocial health.[1]Although photodynamic therapy(PDT)exists for moderate-to-severe acne,due to its adverse reactions,we are still looking forward to a novel therapeutic option with fewer side ***,radiofrequency has been used to treat moderate acne.[2]In this study,we aimed to evaluate the efcacy and safety of moderate-to-severe acne treatment based on a single microneedle with radiofrequency(MRF)*** during three consecutive sessions through a prospective,randomized,and controlled trial study.

关键词： needle prospective randomized

由武劲向文雅:明清之际徽州宗族发展路径的内在转变——以歙县瞻淇汪氏四友堂支派为例

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安徽大学学报（哲学社会科学版） 2024年第3期48卷 11-22页

作者：汪奔安徽师范大学历史学院安徽芜湖241002

歙县瞻淇汪氏四友堂支派在明清之际迎来快速发展,凭借生员群体与科举入仕之风形成群体性人才优势。在明清之际的时势变迁大背景下,加之清初国家政策调整以及支派成员自身价值观念等因素,该支派发展路径由明末的武劲之风向清初的文雅之... 详细信息

歙县瞻淇汪氏四友堂支派在明清之际迎来快速发展,凭借生员群体与科举入仕之风形成群体性人才优势。在明清之际的时势变迁大背景下,加之清初国家政策调整以及支派成员自身价值观念等因素,该支派发展路径由明末的武劲之风向清初的文雅之风转变,从而在整体上不仅延续其在徽州本土社会既有的宗族地位与声望,同时也较为顺利地融入到侨寓地社会之中。与同时期江南士大夫家族相比,四友堂支派发展命运可谓共性与个性并存。明清之际徽州宗族发展转变体现在诸多层面,今后研究仍须将自上而下的王朝国家视角与自下而上的宗族成员个人视角相结合,从多维度剖析典型个案,以求对该阶段徽州宗族发展面貌的认识更为全面清晰。

关键词：明末清初徽州宗族发展路径武劲之风文雅之风瞻淇汪氏

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光量子精密测量研究进展(特邀)

中国激光 2024年第1期51卷 354-368页

作者：王犇张利剑南京大学现代工程与应用科学学院江苏南京210023 智能光传感与调控技术教育部重点实验室江苏南京210023 人工微结构科学与技术协同创新中心江苏南京210023 南京大学固体微结构物理国家重点实验室江苏南京210023

量子精密测量作为当代量子力学的主要应用方面之一,近些年来一直是量子科技的重要研究和发展方向。量子精密测量的主要研究目标是针对物理系统中的未知参数,利用量子资源进行量子增强测量,以提升参数测量精度。与其他物理系统相比,光子... 详细信息

量子精密测量作为当代量子力学的主要应用方面之一,近些年来一直是量子科技的重要研究和发展方向。量子精密测量的主要研究目标是针对物理系统中的未知参数,利用量子资源进行量子增强测量,以提升参数测量精度。与其他物理系统相比,光子系统具有相干时间长、不易受到环境干扰等优越性,因而常被用作量子信息处理的载体。以光子为基础的传感器提升传感精度是光量子精密测量的主要任务。介绍了量子精密测量的一般性原理,给出参数估计的量子极限精度下界。同时,介绍了目前光量子精密测量的理论与实验研究进展以及相应的挑战。

关键词：量子光学量子精密测量参数估计海森堡极限传感

Intestinal Microecology in Children with Pneumonia: The Relationship Between Digestive Health and Disease Recovery

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Journal of Clinical and Nursing Research 2024年第6期8卷 15-20页

作者： Weina Song Shuyan Zhang Zhaorui wang Fanyan Meng ben wang Ning Yang Department of Pediatrics Shandong University Qilu HospitalDezhou HospitalDezhou 253000Shandong ProvinceChina Gastrointestinal Endoscopy Centre Qilu Hospital Dezhou HospitalShandong UniversityDezhou 253000Shandong ProvinceChina Gastrointestinal Endoscopy Centre Linyi People's HospitalLinyi 276000Shandong ProvinceChina

This paper explores the association between intestinal microecology and digestive health and disease recovery in children with *** microecological imbalance is common in children with pneumonia,which is closely associated with digestive health and disease *** microecological imbalance may affect digestive enzyme activity,intestinal mucosal barrier function,and nutrient absorption,which in turn affects digestive *** addition,intestinal microecological imbalances may be associated with immune regulation,inflammatory responses,and pathogen suppression,affecting disease *** to regulate intestinal microecology include probiotic supplementation,dietary modification,and pharmacological ***,the study of intestinal microecology in children with pneumonia faces challenges,and there is a need for improved research methods,individualized treatment strategies,and the development of novel *** conclusion,the intestinal microecology of children with pneumonia is closely related to digestive health and disease recovery,and the regulation of intestinal microecology is of great significance to the treatment of children with ***,future research should further explore the application of the microecology of the intestinal microecology in the treatment of children with pneumonia.

关键词： Children with pneumonia Intestinal microecology Digestive health Disease recovery Probiotics Immunomodulation

基于改进布谷鸟算法结合电导增量法的最大功率点追踪

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科学技术与工程 2024年第13期24卷 5388-5395页

作者：王犇朱武卞正兰上海电力大学电子与信息工程学院上海200090

动态遮阴下,光伏阵列的输出P-U曲线会出现多个功率极值点,传统最大功率点追踪会陷入局部最优。为此,提出基于自适应差分进化的改进布谷鸟搜索(improved cuckoo search,ICS)算法与电导增量法(incremental conductance,INC)相结合的复合算... 详细信息

动态遮阴下,光伏阵列的输出P-U曲线会出现多个功率极值点,传统最大功率点追踪会陷入局部最优。为此,提出基于自适应差分进化的改进布谷鸟搜索(improved cuckoo search,ICS)算法与电导增量法(incremental conductance,INC)相结合的复合算法(ICS-INC)。该算法在前期提出自适应的抛弃概率和随机步长因子,结合差分变异进行随机偏好游走,使算法的搜索开发能力得到提升,有效跳出局部最优。通过改进Lévy飞行公式减小其随机性,减小算法的迭代次数来缩短跟踪时间,实现快速高效定位最大功率点区域,在后期由INC实现局部快速搜索,稳定输出最大功率。在MATLAB/Simulink中建立了仿真模型,对多种算法进行实验,仿真结果表明该算法的追踪速度、全局搜索性以及环境变化的适应能力均得到提升。

关键词：布谷鸟搜索 Lévy飞行差分进化动态局部遮阴电导增量法

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基于事件触发的直流微电网无差拍预测控制

自动化学报 2024年第3期50卷 475-485页

作者：王本斐张荣辉冯国栋 Manandhar Ujjal 郭戈中山大学智能工程学院深圳518000 中山大学广东省智能交通系统重点实验室广州510275 南洋理工大学电气与电子工程学院新加坡308232 东北大学流程工业综合自动化国家重点实验室沈阳110004

针对光伏(Photovoltaic, PV)-电池-超级电容直流微电网系统中光伏发电间歇性造成的功率失配问题,提出一种基于事件触发的无差拍预测控制(Event-triggered deadbeat predictive control, ETDPC)方法,以实现有效的能量管理. ETDPC方法结... 详细信息

针对光伏(Photovoltaic, PV)-电池-超级电容直流微电网系统中光伏发电间歇性造成的功率失配问题,提出一种基于事件触发的无差拍预测控制(Event-triggered deadbeat predictive control, ETDPC)方法,以实现有效的能量管理. ETDPC方法结合事件触发控制策略和无差拍预测控制策略(Deadbeat predictive control, DPC)的优点,根据微电网的拓扑结构构建状态空间模型,用于设计适用于微电网能量管理的触发条件:当ETDPC的触发条件满足时, ETDPC中无差拍预测控制模块被激活,可以在一个控制周期内产生最优控制信号,实现对于扰动的快速响应,减小母线电压纹波;当系统状态不满足ETDPC中的触发条件时,无差拍预测控制模块被挂起,从而消除非必要运算,以减轻实现能量管理的运算负担.因此,对于电池-超级电容器混合储能系统(Hybrid energy storage system, HESS), ETDPC能够缓解间歇性光伏发电与负荷需求之间的功率失衡,以稳定母线电压.最后,数字仿真和硬件在环(Hardware-in-loop, HIL)实验结果表明,相较于传统无差拍控制方法,运算负担减小了50.63%,母线电压纹波小于0.73%,验证了ETDPC方法的有效性与性能优势,为直流微电网的能量管理提供了一种参考.

关键词：微电网光伏混合储能系统事件触发控制无差拍预测控制

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海上油田导管架防腐涂装施工项目质量管理研究

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全面腐蚀控制 2024年第5期38卷 148-152,158页

作者：王超本中海油常州涂料化工研究院有限公司上海海铠防腐工程技术分公司天津300452

海上采油平台导管架涂装工程作为重要的防蚀工程之一,能否高标准、高质量的实施会对石油企业的经济效益和社会效益产生直接的影响。海上平台导管架涂装项目专业技术性较强、施工风险高、施工成本高,作为海洋石油外防腐的一项系统工程,... 详细信息

海上采油平台导管架涂装工程作为重要的防蚀工程之一,能否高标准、高质量的实施会对石油企业的经济效益和社会效益产生直接的影响。海上平台导管架涂装项目专业技术性较强、施工风险高、施工成本高,作为海洋石油外防腐的一项系统工程,影响其施工质量的因素很多,海洋石油涂装工程项目质量管理一直在探索的路上不断进步,然而目前我国海上采油平台并未形成一套标准的针对导管架涂装项目质量管理的完整性的评价方法,同时针对此类问题的研究也相对不多,因此对海上平台导管架涂装项目进行质量管理综合评价研究显得十分重要,如何对此类涂装项目进行科学合理的综合评价是本文的研究重点内容。

关键词：海上油田防腐导管架涂装质量研究项目管理