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Light-based 3D printing of stimulus-responsive hydrogels for miniature devices: recent progress and perspective

BIO-DESIGN AND MANUFACTURING 2024年第5期7卷 721-746页

作者： Xin, Chen xia, neng Zhang, Li Chinese Univ Hong Kong Dept Mech & Automat Engn Hong Kong 999077 Peoples R China Multiscale Med Robot Ctr Shatin NT Hong Kong Sci Pk Hong Kong 999077 Peoples R China Chinese Univ Hong Kong Chow Yuk Ho Technol Ctr Innovat Med Hong Kong 999077 Peoples R China Chinese Univ Hong Kong Dept Surg Hong Kong 999077 Peoples R China Chinese Univ Hong Kong CUHK T Stone Robot Inst Hong Kong 999077 Peoples R China

Miniature devices comprising stimulus-responsive hydrogels with high environmental adaptability are now considered competitive candidates in the fields of biomedicine, precise sensors, and tunable optics. Reliable and advanced fabrication methods are critical for maximizing the application capabilities of miniature devices. Light-based three-dimensional (3D) printing technology offers the advantages of a wide range of applicable materials, high processing accuracy, and strong 3D fabrication capability, which is suitable for the development of miniature devices with various functions. This paper summarizes and highlights the recent advances in light-based 3D-printed miniaturized devices, with a focus on the latest breakthroughs in light-based fabrication technologies, smart stimulus-responsive hydrogels, and tunable miniature devices for the fields of miniature cargo manipulation, targeted drug and cell delivery, active scaffolds, environmental sensing, and optical imaging. Finally, the challenges in the transition of tunable miniaturized devices from the laboratory to practical engineering applications are presented. Future opportunities that will promote the development of tunable microdevices are elaborated, contributing to their improved understanding of these miniature devices and further realizing their practical applications in various fields. [GRAPHICS] .

关键词： 3D printing Stimulus-responsive hydrogels Miniature devices Shape-morphing FABRICATION TEMPERATURE RESOLUTION MICROMACHINES POLYMERS RELEASE DESIGN

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Light-based 3D printing of stimulus-responsive hydrogels for miniature devices:recent progress and perspective

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Bio-Design and Manufacturing 2024年第05期 721-746页

作者： Chen Xin neng xia Li Zhang Department of Mechanical and Automation Engineering The Chinese University of Hong Kong Multi-Scale Medical Robotics Center Hong Kong Science Park Chow Yuk Ho Technology Center for Innovative Medicine The Chinese University of Hong Kong Department of Surgery The Chinese University of Hong Kong CUHK T Stone Robotics Institute The Chinese University of Hong Kong

Miniature devices comprising stimulus-responsive hydrogels with high environmental adaptability are now considered competitive candidates in the fields of biomedicine, precise sensors, and tunable optics. Reliable and advanced fabrication methods are critical for maximizing the application capabilities of miniature devices. Light-based three-dimensional(3D) printing technology offers the advantages of a wide range of applicable materials, high processing accuracy, and strong 3D fabrication capability, which is suitable for the development of miniature devices with various functions. This paper summarizes and highlights the recent advances in light-based 3D-printed miniaturized devices, with a focus on the latest breakthroughs in light-based fabrication technologies, smart stimulus-responsive hydrogels, and tunable miniature devices for the fields of miniature cargo manipulation, targeted drug and cell delivery, active scaffolds, environmental sensing, and optical imaging. Finally,the challenges in the transition of tunable miniaturized devices from the laboratory to practical engineering applications are presented. Future opportunities that will promote the development of tunable microdevices are elaborated, contributing to their improved understanding of these miniature devices and further realizing their practical applications in various fields.

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南方CASS软件在水利工程土方挖填中的应用研究

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价值工程 2024年第11期43卷 154-156页

作者：夏有能周斌云南建投第二水利水电建设有限公司昆明650506 云南建设基础设施投资股份有限公司昆明650506

随着人口的不断增长和经济的持续发展,对水资源的需求不断增加。为了满足人们的用水需求,提高水资源利用效率,水利工程建设已成为现代化城市和农村发展的一个重要方向。然而,水利工程建设需要进行大规模的土石方工程,包括开挖和填筑等... 详细信息

随着人口的不断增长和经济的持续发展,对水资源的需求不断增加。为了满足人们的用水需求,提高水资源利用效率,水利工程建设已成为现代化城市和农村发展的一个重要方向。然而,水利工程建设需要进行大规模的土石方工程,包括开挖和填筑等。为了提高土石方工程的效率和质量,CASS软件技术应用于水库开挖和填筑中,成为了一种重要的辅助工具。本文结合文山州德厚河流域白牛厂汇水外排工程菲古水库详细分析了南方CASS软件在水利工程土方挖填中的具体应用流程,其计算结果更为准确,起到了事半功倍的效果。通过对这一新技术在工程实践中的应用,为以后类似工程计量提供参考。

关键词：南方CASS软件水利工程土方挖填

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水利工程施工中导流施工技术的应用

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科学与信息化 2024年第12期 111-113页

作者：夏有能周斌云南建投第二水利水电建设有限公司云南昆明 650506 云南建设基础设施投资股份有限公司云南昆明 650506

导流施工技术是水利工程中关键的环节之一,它通过合理的设计和精密的施工,确保施工过程中水流的有序流动,并保证施工安全.本文主要介绍了常用导流施工技术及水利工程应用导流施工技术的提升对策,以期为相关领域提供参考.

关键词：导流施工技术水利工程应用

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水库大坝沥青混凝土心墙施工技术及效益分析

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价值工程 2024年第19期43卷 44-46页

作者：夏有能周斌云南建投第二水利水电建设有限公司昆明650506 云南建设基础设施投资股份有限公司昆明650506

沥青混凝土因其出色的抗渗性、高变形容量、构造简洁、工程量小、施工迅速、安全可靠及环保特性,相较于其他心墙材料更具优势。其防渗性能优异,可达10-8以上,兼具良好的塑性与柔韧性,能自适应坝体形变,并对既有裂缝具有自我修复能力。... 详细信息

沥青混凝土因其出色的抗渗性、高变形容量、构造简洁、工程量小、施工迅速、安全可靠及环保特性,相较于其他心墙材料更具优势。其防渗性能优异,可达10-8以上,兼具良好的塑性与柔韧性,能自适应坝体形变,并对既有裂缝具有自我修复能力。自20世纪70年代以来,我国已建成多座沥青混凝土心墙坝。本文以广南县赛京水库大坝为例,深入探讨了沥青混凝土心墙的施工方法、工艺、拌和站布局、沥青混合料的拌制、机械配置及质量控制,旨在为中小型工程提供有益的沥青混凝土心墙施工方法参考。

关键词：水库大坝沥青混凝土心墙施工工艺

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基于PEEC的WPT系统磁芯结构建模

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电力电子技术 2024年第3期58卷 78-80,117页

作者：许肖颖夏能弘张帆李方深上海电力大学电气工程学院上海200090 国网安徽省电力公司安徽合肥230000

磁耦合机构作为无线电能传输的核心部分,直接决定系统的传输性能。目前广泛采用加装磁芯来提高耦合机构的传输性能。然而加入磁芯后,线圈与磁芯的融合建模及协同设计问题,目前多依赖于电磁仿真软件及二维分区建模,该方法无法量化磁芯参... 详细信息

磁耦合机构作为无线电能传输的核心部分,直接决定系统的传输性能。目前广泛采用加装磁芯来提高耦合机构的传输性能。然而加入磁芯后,线圈与磁芯的融合建模及协同设计问题,目前多依赖于电磁仿真软件及二维分区建模,该方法无法量化磁芯参数对系统传输性能的作用。此处基于部分元等效电路(PEEC)对磁芯进行建模,根据磁性材料特性分别从涡流、磁化强度两方面构建磁芯二元模型,并引入退磁因子对磁化强度模型进行修正。基于电场积分方程构建了以磁芯涡流、节点电压和磁化强度为未知量的解决矩阵,实现了线圈与磁芯融合建模。在融合建模的基础上,基于矢量磁位提取了带芯线圈的自感系数,将建模结果与商用仿真软件及实验进行对比,其误差控制在5%以内,验证了建模结果的准确性。带芯线圈自感参数量化了磁芯对线圈的附加耦合作用,为磁芯结构设计提供理论支撑。

关键词：无线电能传输部分元等效电路自感系数

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用于WPT的低损耗电磁超材料研究与设计

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电力电子技术 2024年第8期58卷 49-52,69页

作者：马骅祺夏能弘燕爽毛熙科上海电力大学电气工程学院上海200090

双层螺旋结构的电磁超材料常常用于无线电能传输(WPT)中来提升其传输效率。当它以阵列形式处于WPT的高频磁场中时,其交流电阻及其带来的损耗不可忽略。为降低损耗,此处以双层螺旋结构的电磁超材料为基础,通过采用非均匀线宽设计的方式,... 详细信息

双层螺旋结构的电磁超材料常常用于无线电能传输(WPT)中来提升其传输效率。当它以阵列形式处于WPT的高频磁场中时,其交流电阻及其带来的损耗不可忽略。为降低损耗,此处以双层螺旋结构的电磁超材料为基础,通过采用非均匀线宽设计的方式,提升了电磁超材料的品质因数,设计了一种新型的低损耗电磁超材料及其对应的混合电磁超材料阵列。对非均匀线宽结构的电磁超材料样品进行测试,实验结果证明相比均匀线宽结构,该非均匀线宽结构的等效电阻降低了约5.69%,等效电感上升了约2.49%,品质因数提升至556.87,损耗降低了20.17%。对应的混合电磁超材料阵列能够将WPT系统的效率提升33.06%。

关键词：无线电能传输电磁超材料低损耗

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General properties of the spectral form factor in open quantum systems

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Frontiers of physics 2024年第3期19卷 229-237页

作者： Yi-neng Zhou Tian-Gang Zhou Pengfei Zhang Institute for Advanced Study Tsinghua UniversityBeijing 100084China Department of Physics Fudan UniversityShanghai 200438China

The spectral form factor(SFF)can probe the eigenvalue statistic at different energy scales as its time variable *** closed quantum chaotic systems,the SFF exhibits a universal dip-ramp-plateau behavior,which reflects the spectrum rigidity of the *** this work,we explore the general properties of SFF in open quantum *** find that in open systems the SFF first decays exponentially,followed by a linear increase at some intermediate time scale,and finally decreases to a saturated plateau *** derive general relations between(i)the early-time decay exponent and Lindblad operators;(ii)the long-time plateau value and the number of steady *** also explain the effective field theory perspective of general *** verify our theoretical predictions by numerically simulating the Sachdev−Ye−Kitaev(SYK)model,random matrix theory(RMT),and the Bose−Hubbard model.

关键词： spectral form factor open quantum system quantum chaos

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Analysis of Common Respiratory Infected Pathogens in 3100 Children after the Coronavirus Disease 2019 Pandemic

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Current Medical Science 2022年第5期42卷 1094-1098页

作者： Jun-e MA Qing-feng MA Wei WANG Yan ZENG xiang-hua CUI Guo-lei WANG Si-yu LIU Zhen WANG Xuan xiaO Zu-neng xia Heng-cheng ZHU Cheng-liang ZHU Department of Clinical Laboratory Renmin Hospital of Wuhan UniversityWuhan430060China Department of Clinical Laboratory Liyuan HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430077China Department of Clinical Laboratory Wuhan Fourth HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430077China Department of Urology Renmin Hospital of Wuhan UniversityWuhan430060China State Key Laboratory of Virology College of Life SciencesWuhan UniversityWuhan430060China Department of Ophthalmology Renmin Hospital of Wuhan UniversityWuhan430060China

Objective To investigate the epidemiological features in children after the coronavirus disease 2019(COVID-19)*** This study collected throat swabs and serum samples from hospitalized pediatric patients of Renmin Hospital of Wuhan University,Wuhan,Hubei province,China before and after the COVID-19 *** infected pathogens[adenovirus(ADV),influenza virus A/B(Flu A/B),parainfluenza virus 1/2/3(PIV1/2/3),respiratory syncytial virus(RSV),Mycoplasma pneumoniae(MP),and Chlamydia pneumoniae(CP)]were *** pathogens,age,and gender were used to analyze the epidemiological features in children after the COVID-19 *** The pathogen detection rate was significantly higher in females than in males(P<0.05),and the infection of PIV1 and MP was mainly *** the COVID-19 pandemic,PIV1,PIV3,RSV,and MP had statistically different detection rates among the age groups(P<0.05),and was mainly detected in patients aged 0–6 years,0–3 years,0–3 years,and 1–6 years,*** comparing before the COVID-19 pandemic,the total detection rate of common respiratory pathogens was lower(P<0.05).Except for the increase in the detection rate of PIV1 and CP,the infection rate of other pathogens had almost *** The prevention and control measures for the COVID-19 pandemic effectively changed the epidemiological features of common respiratory tract infectious diseases in pediatric children.

关键词： before and after the COVID-19 pandemic common respiratory infectious pathogens pediatric children

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Heterogeneous Task Allocation Model and Algorithm for Intelligent Connected Vehicles

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CMC-COMPUTERS MATERIALS & CONTINUA 2024年第3期80卷 4281-4302页

作者： Wan, neng Zeng, Guangping Zhou, xianwei Univ Sci & Technol Beijing Sch Comp & Commun Engn Beijing 100083 Peoples R China Southwest Forestry Univ Sch Mech & Transportat Kunming 650224 Peoples R China

With the development of vehicles towards intelligence and connectivity, vehicular data is diversifying and growing dramatically. A task allocation model and algorithm for heterogeneous Intelligent Connected Vehicle (ICV) applications are proposed for the dispersed computing network composed of heterogeneous task vehicles and Network Computing Points (NCPs). Considering the amount of task data and the idle resources of NCPs, a computing resource scheduling model for NCPs is established. Taking the heterogeneous task execution delay threshold as a constraint, the optimization problem is described as the problem of maximizing the utilization of computing resources by NCPs. The proposed problem is proven to be NP-hard by using the method of reduction to a 0-1 knapsack problem. A many-to-many matching algorithm based on resource preferences is proposed. The algorithm first establishes the mutual preference lists based on the adaptability of the task requirements and the resources provided by NCPs. This enables the filtering out of un-schedulable NCPs in the initial stage of matching, reducing the solution space dimension. To solve the matching problem between ICVs and NCPs, a new many-to-many matching algorithm is proposed to obtain a unique and stable optimal matching result. The simulation results demonstrate that the proposed scheme can improve the resource utilization of NCPs by an average of 9.6% compared to the reference scheme, and the total performance can be improved by up to 15.9%.

关键词： Task allocation intelligent connected vehicles dispersed computing matching algorithm RESOURCE-ALLOCATION PARADIGM

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