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Advances in Electrostatic Plasma Methods for Purification of Airborne Pathogenic Microbial Aerosols:Mechanism,Modeling and Application

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Environment & Health 2024年第9期2卷 596-617页

作者： shanlong Tao Yong Zhu Mingxia Chen Wenfeng Shangguan Research Center for Combustion and Environmental Technology School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240PR China School of Mechanical and Power Engineering East China University of Science and TechnologyShanghai 200237PR China

The transmission of pathogenic airborne microorganisms significantly impacts public health and societal *** healthy indoor air quality in public spaces is *** various air purification technologies,electrostatic precipitation and atmospheric pressure nonthermal plasma are notable for their broad-spectrum effectiveness,high efficiency,cost-effectiveness,and *** review investigates the primary mechanisms by which these electrostatic methods collect and disinfect pathogenic *** also delves into recent advancements in enhancing their physical and chemical mechanisms for improve ***,a thorough summary of mathematical models related to the migration and deactivation of pathogenic aerosols in electrostatic purifiers is *** will help us to understand the behavior of aerosols in purification ***,the review discusses the current research on creating a comprehensive health protection system and addresses the challenges of balancing byproduct control with *** aim is to establish a foundation for future research and development in electrostatic aerosol purification and develop integrated air purification technologies that are both efficient and safe.

关键词： electrostatic microbial aerosols inactivation collection air purification

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马克思交往理论视域下“欢乐春节”传播研究

三明学院学报 2024年第1期41卷 32-38,80页

作者：李善龙福州大学马克思主义学院福建福州350108

交往是马克思主义哲学的一个重要范畴,也是“欢乐春节”传播的应有之义。春节不仅是中华儿女的传统节日,而且已由族别标识向族际共享转变。中国与世界的交往新格局提升了“欢乐春节”在国际上的传播力和影响力。“多主体交往实践”突显... 详细信息

交往是马克思主义哲学的一个重要范畴,也是“欢乐春节”传播的应有之义。春节不仅是中华儿女的传统节日,而且已由族别标识向族际共享转变。中国与世界的交往新格局提升了“欢乐春节”在国际上的传播力和影响力。“多主体交往实践”突显“欢乐春节”的公共性,变革性的传播媒介力量助推春节成为国际性的共享节日。“欢乐春节”在海外不断传播,增进了族群内部和族群间的情感共鸣,形塑和推动了族群间的价值共识,成为实现中外民众民心相通的重要途径。中国应充分利用“欢乐春节”平台,加强文化间交往交流,以节日为媒,推动文化共通,助力民心相通。

关键词：马克思交往理论节日传播 “欢乐春节”

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线缆掩膜中心线代数化重建弯曲半径计算方法

激光杂志 2024年第1期45卷 59-64页

作者：曹国群刘桂雄周善龙华南理工大学机械与汽车工程学院广州510640 广州市方瞳科技有限责任公司广州510640

大型电气设备中线缆起到输送、信号传递重要作用,线缆弯曲半径测量是安装过程质量保证的重要环节。针对测量线缆弯曲半径传统方法存在操作不便、效率较低的问题,提出一种非接触式机器视觉线缆弯曲半径测量方法,基于深度学习RGB-D双模态... 详细信息

大型电气设备中线缆起到输送、信号传递重要作用,线缆弯曲半径测量是安装过程质量保证的重要环节。针对测量线缆弯曲半径传统方法存在操作不便、效率较低的问题,提出一种非接触式机器视觉线缆弯曲半径测量方法,基于深度学习RGB-D双模态语义分割网络分割线缆掩膜,从掩膜图像中提取线缆特征中心线,进而构建线缆空间特征点集,对缆空间特征点集用参数曲线代数化重建得线缆空间特征曲线,再利用质点空间曲线运动规律求解线缆弯曲半径。为验证本方法实际应用效果,用半径R=1.0 mm、1.5 mm标准圆弧固定线缆,由弦高法人工直尺测量结果与本方法测量结果对比,实验表明:本方法测量弯曲半径较人工直尺测量平均误差分别降低7.2%、2.2%,测量时间分别减少93.8%、92.2%。所提出的非接触式的机器视觉线缆弯曲半径测量方法在掩膜图像基础上代数化重建线缆空间特征曲线,计算其空间弯曲半径,测量结果可靠,较人工手动测量精度高、速度快,能适用于各种场合的线缆弯曲半径测量任务。

关键词：线缆弯曲半径等弧弦距采样方法代数化重建

Phase diagrams, mechanisms and unique characteristics of alternating-structured polymer self-assembly via simulations

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Science China Chemistry 2019年第2期62卷 226-237页

作者： shanlong Li Chunyang Yu Yongfeng Zhou School of Chemistry & Chemical Engineering State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong University

Alternating-structured polymers(ASPs), like alternating copolymers, regular multiblock copolymers and polycondensates, are very important polymer structures with broad applications in photoelectric materials. However, their self-assembly behaviors,especially the self-assembly of alternating copolymers, have not been clearly studied up to now. Meanwhile, the unique characteristics therein have not been systematically disclosed yet by both experiments and theories. Herein, we have performed a systematic simulation study on the self-assembly of ASPs with two coil alternating segments in solution through dissipative particle dynamics(DPD) simulations. Several morphological phase diagrams were constructed as functions of different impact parameters. Diverse self-assemblies were observed, including spherical micelles, micelle networks, worm-like micelles, disklike micelles, multimicelle aggregates, bicontinuous micelles, vesicles, nanotubes and channelized micelles. Furthermore, a morphological evolutionary roadmap for all these self-assemblies was constructed, along with which the detailed molecular packing models and self-assembly mechanisms for each aggregate were disclosed. The ASPs were found to adopt a folded-chain mechanism in the self-assemblies. Finally, the unique characteristics for the self-assembly of alternating copolymers were revealed especially, including(1. ultra-fine and uniform feature sizes of the aggregates;(2) independence of self-assembled structures from molecular weight and molecular weight distribution;(3) ultra-small unimolecular aggregates. We believe the current work is beneficial for understanding the self-assembly of alternating structured polymers in solution and can serve as a guide for the further experiments.

关键词： alternating-structured polymer self-assembly dissipative particle dynamics simulations phase diagram

风化砂岩石窟表面热响应及力学性能变化:对砂岩石窟本体表层风化(劣化)评价的启示

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文物保护与考古科学 2024年第5期36卷 8-16页

作者：王颖红郭青林杨善龙张晖安徽大学历史学院安徽合肥230039 国家古代壁画与土遗址保护工程技术研究中心(敦煌研究院) 甘肃酒泉736200 浙江大学艺术与考古学院浙江杭州310028

表层风化问题严重影响石窟寺类文物的长久保存。如何通过风化表层的性能变化来对石窟寺进行病害诊断和风险评估是预防性保护的关键问题。本研究利用便携式无损检测手段(ProceqEquotip 550里氏硬度计、FLIR T660红外热成像仪)对甘肃庆阳... 详细信息

表层风化问题严重影响石窟寺类文物的长久保存。如何通过风化表层的性能变化来对石窟寺进行病害诊断和风险评估是预防性保护的关键问题。本研究利用便携式无损检测手段(ProceqEquotip 550里氏硬度计、FLIR T660红外热成像仪)对甘肃庆阳北石窟寺外立面8个研究面进行表面硬度测试及表面温度监测,分析其典型风化病害的热响应情况及力学性能变化规律。研究结果显示,病害类型对其表面硬度值和温度波动幅度有不同程度的方向性影响。水锈结壳的表面昼夜温度波动幅度最小,表面硬度离散地分布在较高水平;粉化剥落和泛盐的表面昼夜温度波动较平缓,表面硬度值集中分布在较低水平;沟槽状溶蚀(差异风化)的表面昼夜温度波动幅度略高于粉化剥落表面,其表面硬度集中分布在较高水平;微生物覆盖的表层,昼夜温度波动幅度最大,表面硬度值离散地分布在较低水平。上述病害-性能对应关系有助于在石窟寺类文物的日常监测中判别风化病害的分布及变化趋势,对砂岩石窟的风险预警有一定指示作用。

关键词：砂岩石窟寺风化(劣化)表面表面硬度表面温度蒸发通量预防性保护

Process and challenges of stainless steel based bipolar plates for proton exchange membrane fuel cells

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International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 1099-1119页

作者： Gaoyang Liu Faguo Hou shanlong Peng Xindong Wang Baizeng Fang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Chemical and Biological Engineering University of British Columbia2360 East MallVancouverBC V6T 1Z3Canada

Proton exchange membrane fuel cell(PEMFC)powered automobiles have been recognized to be the ultimate solution to replace traditional fuel automobiles because of their advantages of PEMFCs such as no pollution,low temperature start-up,high energy density,and low *** one of the core components,the bipolar plates(BPs)play an important role in the PEMFC *** graphite BPs and composite BPs have been criticized for their shortcomings such as low strength,high brittleness,and high processing *** contrast,stainless steel BPs(SSBPs)have recently attracted much attention of domestic and foreign researchers because of their excellent comprehensive performance,low cost,and diverse options for automobile ***,the SSBPs are prone to corrosion and passivation in the PEMFC working environment,which lead to reduced output power or premature *** review is aimed to summarize the corrosion and passivation mechanisms,characterizations and evaluation,and the surface modification technologies in the current SSBPs *** non-coating and coating technical routes of SSBPs are demonstrated,such as substrate component regulation,thermal nitriding,electroplating,ion plating,chemical vapor deposition,and physical vapor deposition,*** coating materials for SSBPs are metal coatings,metal nitride coatings,conductive polymer coatings,and polymer/carbon coatings,*** the surface modification technologies can solve the corrosion resistance problem of stainless steel without affecting the contact resistance,however still facing restraints such as long-time stability,feasibility of low-cost,and mass production *** paper is believed to enrich the knowledge of high-performance and long-life BPs applied for PEMFC automobiles.

关键词： automobile application proton exchange membrane fuel cell stainless steel bipolar plates corrosion resistance contact resistance

Novel Au nanoparticles-inlaid titanium paper for PEM water electrolysis with enhanced interfacial electrical conductivity

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International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 1090-1098页

作者： Yue Liu Shaobo Huang shanlong Peng Heng Zhang Lifan Wang Xindong Wang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Department of Energy Storage Science and Engineering School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China School of Physics and Engineering Henan University of Science and TechnologyLuoyang 471023China

Proton-exchange membrane water electrolysis(PEM WE)is a particularly promising technology for renewable hydrogen ***,the excessive passivation of the gas diffusion layer(GDL)will seriously affect the high surface-contact resistance and result in energy ***,a mechanism for improving the conductivity and interface stability of the GDL is an urgent *** this work,we have prepared a hydrophilic and corrosion resistant conductive composite protective *** polydopamine(PDA)film on the Ti surface,which was obtained via the solution oxidation method,ensured that neither micropores nor pinholes existed in the final hybrid ***-situ reduced gold nanoparticles(AuNPs)improved the conductivity to achieve the desired interfacial contact resistance and further enhanced the corrosion *** surface composition of the treated samples was investigated using scanning electron microscopy(SEM),transmis-sion electron microscopy(TEM),X-ray diffraction(XRD),and Fourier transform infrared spectroscopy(FTIR).The results indicated that the optimized reaction conditions included a pH value of 3 of HAuCl_(4) solution with PDA deposition(48 h)on papers and revealed the lowest con-tact resistance(0.5 mΩ·cm^(2))and corrosion resistance(0.001.A·cm^(−2))in a 0.5 M H_(2)SO_(4)+2 ppm F−solution(1.7 V ***)among all the modified specimens,where RHE represents reversible hydrogen *** findings indicated that the Au-PDA coating is very appropriate for the modification of Ti GDLs in PEM WE systems.

关键词： water electrolysis proton-exchange membrane hydrogen energy titanium paper diffusion layer Au nanoparticles inlaid titanium gold–polydopamine nanocomposite

从少阳证阴证机转论述柴胡桂枝干姜汤的临床应用及验案举隅

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中国中医药现代远程教育 2024年第8期22卷 77-80页

作者：李明婷郑力强崔山龙聊城市第四人民医院神经内科山东聊城252000

柴胡桂枝干姜汤为小柴胡汤的变化方,病位在半表半里,临床变证繁多,历代医家对其病机认识存在争议。陈慎吾先生首先提出阴证机转理论,认为柴胡桂枝干姜汤用于少阳病而又兼见阴证机转者最恰。阴证机转乃疾病由阳转阴、由热转寒、由实转虚... 详细信息

柴胡桂枝干姜汤为小柴胡汤的变化方,病位在半表半里,临床变证繁多,历代医家对其病机认识存在争议。陈慎吾先生首先提出阴证机转理论,认为柴胡桂枝干姜汤用于少阳病而又兼见阴证机转者最恰。阴证机转乃疾病由阳转阴、由热转寒、由实转虚的临界点,是病情发展的转折点。作者结合众多医家对柴胡桂枝干姜汤的注解及以方测证,认为从少阳证阴证机转理论去阐释本方,具有更广泛的含义。少阳小柴胡证而有太阴脾寒证;少阳小柴胡证而有肺寒痰饮咳喘证;少阳小柴胡证而有厥阴寒热错杂、上热下寒证等,拓宽了此方的应用范围,并以临床验案佐证。

关键词：柴胡桂枝干姜汤少阳证阴证机转验案经方

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高校建筑工程质量安全监管的实践路径

鞍山师范学院学报 2024年第3期26卷 110-112页

作者：刘善龙沈峰葛轩迪鞍山师范学院辽宁鞍山114007 湖南大学设计艺术学院湖南长沙410082

建筑工程质量安全监督管理是一项系统性工作,是全面保障建筑工程各个环节质量安全的重要环节,是切实维护人民群众生命财产安全和社会和谐稳定的重要基础。分析高校建筑工程质量安全监管存在的诸多问题,提出相应的解决对策:完善法律法规... 详细信息

建筑工程质量安全监督管理是一项系统性工作,是全面保障建筑工程各个环节质量安全的重要环节,是切实维护人民群众生命财产安全和社会和谐稳定的重要基础。分析高校建筑工程质量安全监管存在的诸多问题,提出相应的解决对策:完善法律法规体系,强化制度保障;优化安全监管体系,提升监管实效;坚持技术创新,提升监管水平;完善培训机制,提升人员素质。

关键词：高校建筑工程质量安全监管实践路径