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Advances in air pollution control for key industries in China during the 13th five-year plan

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Journal of Environmental Sciences 2023年第1期123卷 446-459页

作者： Xuecheng Wu Yanping Yang Yue Gong Zhiwen Deng Ying Wang Weihong Wu Chenghang Zheng yongxin zhang State Key Laboratory of Clean Energy Utilization College of Energy EngineeringZhejiang UniversityHangzhou 310027China Jiaxing Research Institute of Zhejiang University Jiaxing 314051China

Industrial development is an essential foundation of the national economy,but the industry is also the largest source of air pollution,of which power plants,iron and steel,building materials,and other industries emit large amounts of ***,the Chinese government has promulgated a series of stringent emission regulations,and it is against this backdrop that research into air pollution control technologies for key industrial sectors is in full *** particular,during the 13th Five-Year Plan,breakthroughs have been made in pollution control technology for key industrial sectors.A multi-pollutant treatment technology system of desulfurization,denitrification,and dust collection,which applies to key industries such as power plants,steel,and building materials,has been ***-performance materials for the treatment of different pollutants,such as denitrification catalysts and desulfurization absorbers,were *** the same time,multi-pollutant synergistic removal technologies for flue gas in various industries have also become a hot research topic,with important breakthroughs in the synergistic removal of NO_(x),SO_(x),and *** to the increasingly stringent emission standards and regulations in China,there is still a need to work on the development of multi-pollutant synergistic technologies and further research and development of synergistic abatement technologies for CO_(2) to meet the requirements of ultra-low emissions in industrial sectors.

关键词： Key industries Desulfurization Denitrification Dust collection Multi-pollutant control

Theoretical connection from the dielectric constant of films to the capacitance of capacitors under high temperature

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High Voltage 2023年第4期8卷 707-716页

作者： yongxin zhang Qikun Feng Shaolong Zhong Jiayao Pei Fangyi Chen Lei Huang Zhe Yang Zhimin Dang Department of Electrical Engineering Tsinghua UniversityBeijingChina Department of Electrical and Computer Engineering Carnegie Mellon UniversityPittsburghPennsylvaniaUSA Department of Energy Technology Aalborg UniversityAalborgDenmark

In the process of coping with energy and environmental protection issues,technologies such as energy materials,energy devices,and energy systems have made great *** excellent performance,film capacitors play an increasingly important role in energyrelated *** the increase of application scenarios and the continuous development of film material technology,it is urgent to establish a better theoretical connection from films to ***,the main components of the capacitor including the film and the positional relationships among them are ***,from the two perspectives of indirect calculation according to the volume and the direct calculation according to the winding process,the equation between the dielectric constant of films and the corresponding capacitance of capacitors is ***,the measurement data and error analysis results of the built test platform prove the accuracy and great potential of the proposed calculation *** addition,error sources,including film thickness uniformity,are ***,the challenges faced by the proposed calculation methods and the paths that can be referenced for future research are summarised and discussed.

关键词： film dielectric capacitance

A survey on federated learning:a perspective from multi-party computation

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Frontiers of Computer Science 2024年第1期18卷 93-103页

作者： Fengxia LIU Zhiming ZHENG Yexuan SHI yongxin TONG Yi zhang Institute of Artificial Intelligence and Key Laboratory of Mathematics Informatics Behavioral Semantics Beihang UniversityBeijing 100191China State Key Laboratory of Software Development Environment and Advanced Innovation Center for Future Blockchain and Privacy Computing Beihang UniversityBeijing 100191China Pengcheng Laboratory Shenzhen 518055China Zhongguancun Laboratory Beijing 100190China Institute for Mathematical Sciences and Engineering Research Center of Financial Computing and Digital Engineering Renmin University of ChinaBeijing 100872China

Federated learning is a promising learning paradigm that allows collaborative training of models across multiple data owners without sharing their raw *** enhance privacy in federated learning,multi-party computation can be leveraged for secure communication and computation during model *** survey provides a comprehensive review on how to integrate mainstream multi-party computation techniques into diverse federated learning setups for guaranteed privacy,as well as the corresponding optimization techniques to improve model accuracy and training *** also pinpoint future directions to deploy federated learning to a wider range of applications.

关键词： sfederated learning multi-party ycomputation privacy-preserving data mining distributed learning

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研制低压配变电缆出线防护装置

农村电气化 2024年第2期 73-74,91页

作者：黄天祥张琰美张永鑫刘渝铭曹先德国网福建省电力有限公司龙岩市新罗区供电公司福建龙岩361000

本研究旨在解决低压配电网中电缆出线短路隐患的问题。为此,设计了一种新型防护管,主要由聚四氟乙烯管、连接机构和防护机构3部分组成。该防护管能够有效保护电缆免受外界环境的影响,同时快速安装和拆卸,便于故障排查。该防护管可以有... 详细信息

本研究旨在解决低压配电网中电缆出线短路隐患的问题。为此,设计了一种新型防护管,主要由聚四氟乙烯管、连接机构和防护机构3部分组成。该防护管能够有效保护电缆免受外界环境的影响,同时快速安装和拆卸,便于故障排查。该防护管可以有效降低电缆故障率,提高电力供应的稳定性和可靠性。本研究对解决低压配变电缆出线短路隐患提供了新的解决方案。

关键词：低压配变电缆出线短路隐患防护管

A cell-based high-throughput approach to identify inhibitors of influenza A virus

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Acta Pharmaceutica Sinica B 2014年第4期4卷 301-306页

作者： Qian Gao Zhen Wang Zhenlong Liu Xiaoyu Li yongxin zhang Zhizhen zhang Shan Cen Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijingChina Department of Biochemistry Guangdong Medical CollegeZhanjiang524023China

Influenza is one of the most common infections threatening public health worldwide and is caused by the influenza *** emergence of drug resistance has led to an urgent need to develop new anti-influenza *** this study we established a 293T cell line that constitutively synthesizes a virus-based negative strand RNA,which expresses Gaussia luciferase upon influenza A virus *** this cell line,an assay was developed and optimized to search for inhibitors of influenza virus *** studies and statistical analyses presented herein demonstrate the sensitivity and reproducibility of the assay in a high-throughput format(Z 0 factor value40.8).A pilot screening provides further evidence for validation of the *** together,this work provides a simple,convenient,and reliable HTS assay to identify compounds with anti-influenza activity.

关键词： Cell-based assay Gaussia luciferase Influenza A virus High-throughput screen

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基于糖谱法的地黄药材及饮片定性定量分析

中国实验方剂学杂志 2024年第18期30卷 157-163页

作者：戴梦茹李春李娆娆林丽美沈春修张永欣冯伟红王智民中国中医科学院中药研究所中药质量控制技术国家工程实验室北京100700 宜春学院江西省作物生长发育调控重点实验室江西宜春336000 湖南中医药大学长沙410208

目的:以地黄中低聚糖类成分为研究对象,建立含量测定方法及薄层色谱法(TLC)鉴别方法,探究不同地黄药材及饮片中低聚糖类成分含量及分布规律。方法:收集鲜地黄和生地黄药材各10批,生地黄和熟地黄饮片各12批,采用硅胶G薄层板,以乙酸乙酯-... 详细信息

目的:以地黄中低聚糖类成分为研究对象,建立含量测定方法及薄层色谱法(TLC)鉴别方法,探究不同地黄药材及饮片中低聚糖类成分含量及分布规律。方法:收集鲜地黄和生地黄药材各10批,生地黄和熟地黄饮片各12批,采用硅胶G薄层板,以乙酸乙酯-水-无水甲酸-冰乙酸(12∶6∶5∶4)为展开剂,10%硫酸乙醇溶液为显色剂,建立地黄中果糖、蔗糖、棉籽糖、甘露三糖和水苏糖的TLC鉴别方法;采用高效液相色谱-蒸发光散射检测法(HPLC-ELSD),建立不同地黄药材及饮片中果糖、葡萄糖、蔗糖、蜜二糖、棉籽糖、甘露三糖和水苏糖7种糖类成分的含量测定方法。对不同地黄药材及饮片中7种糖类成分含量进行主成分分析(PCA)及偏最小二乘法-判别分析(PLS-DA),以变量重要性投影(VIP)值>1筛选差异性成分。结果:TLC鉴别结果显示,鲜地黄、生地黄药材和生地黄饮片样品在与水苏糖、棉籽糖和蔗糖对照品相应的位置上显现相同颜色的斑点,而熟地黄饮片在此基础上与甘露三糖和果糖对照品相应的位置上显示相同颜色的斑点。7种待测成分的方法学考察结果均符合含量测定的要求。鲜地黄、生地黄药材中仅检出葡萄糖、蔗糖、棉籽糖和水苏糖,其在鲜地黄药材中的平均质量分数分别为0.84%、4.62%、2.42%和57.90%,在生地黄药材中的平均质量分数分别为3.16%、9.36%、7.05%和38.10%。生地黄饮片中,果糖、葡萄糖、蔗糖、蜜二糖、棉籽糖、甘露三糖和水苏糖的平均质量分数分别为1.68%、4.27%、9.96%、0.53%、6.85%、3.05%和37.52%;熟地黄饮片中,上述7种糖的平均质量分数分别为10.62%、11.01%、1.25%、3.35%、1.12%、28.16%和6.39%。多元统计分析结果显示,糖类成分可明显区分鲜地黄、生地黄和熟地黄,三者的主要差异性成分分别为水苏糖、蔗糖、棉籽糖和甘露三糖。结论:地黄不同药材及饮片中糖类成分的含量及种类存在较大差异,且基于此建立的薄层色谱鉴别方法可用于区分生地黄和熟地黄,可为地黄质量标准提升和地黄不同炮制品中低聚糖开发及应用奠定基础。

关键词：地黄单糖低聚糖定性分析定量分析主成分分析(PCA) 偏最小二乘法-判别分析(PLS-DA)

基于人工智能的工程监理信息异常检测仿真技术研究

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粘接 2024年第2期51卷 171-174页

作者：黄赐豪张建宁张永炘侯铁铸黄鸿杰广东创成建设监理咨询有限公司广东广州520000

为降低工程监理信息系统异构感知网络的入侵攻击,建立了工程监理信息系统入侵检测模型,并将聚类协议与人工智能算法相结合,以提高系统入侵检测效率。实验结果表明,人工智能算法的准确率、F1分数、召回率均大于99.5%,可有效检测到工程监... 详细信息

为降低工程监理信息系统异构感知网络的入侵攻击,建立了工程监理信息系统入侵检测模型,并将聚类协议与人工智能算法相结合,以提高系统入侵检测效率。实验结果表明,人工智能算法的准确率、F1分数、召回率均大于99.5%,可有效检测到工程监理数据信息异常获取,拒绝服务类攻击及病毒类攻击,从而保证工程监理信息系统运行正常。当误报率为0时,基于人工智能算法的入侵检测率高达97.3%;当误报率为100%,入侵检测率仍高达91.2%。研究结果可为工程监理信息系统检测提供参考依据。

关键词：人工智能算法工程监理信息系统检测异构感知网络

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直流支撑电容器圆元件的散热模型与仿真研究

电力电容器与无功补偿 2024年第1期45卷 121-127页

作者：左强林雷乔舒钟少龙张涌新党智敏无锡赛晶电力电容器有限公司江苏无锡214177 清华大学电机系新型电力系统运行与控制全国重点实验室北京100084

随着自愈干式金属化薄膜电容器应用范围的不断扩展,其散热方式与内部温升问题成为了重要的理论与工程问题。鉴于此,本文基于直流支撑电容器圆元件的发热规律,分析了电容器元件圆柱状整体均匀发热时发热体的热流分布。进一步,结合电热对... 详细信息

随着自愈干式金属化薄膜电容器应用范围的不断扩展,其散热方式与内部温升问题成为了重要的理论与工程问题。鉴于此,本文基于直流支撑电容器圆元件的发热规律,分析了电容器元件圆柱状整体均匀发热时发热体的热流分布。进一步,结合电热对偶原理,建立了圆元件热计算模型,并通过微分单元积分,得到了圆元件的热阻计算公式。最后,通过试验验证了圆元件的热计算模型的正确性,且提出了圆元件热计算的验证方法,为直流支撑电容器圆元件的发热提供理论与试验参考。

关键词：直流支撑电容器干式电容器圆元件散热模型轴向散热径向散热

Identification and characterization of loop7 motif and its role in regulating biological function of human APOBEC3G through molecular modeling and biological assay

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Acta Pharmaceutica Sinica B 2017年第5期7卷 571-582,616页

作者： Congjie Zhai Ling Ma Zhixin zhang Jiwei Ding Jing Wang yongxin zhang Xiaoyu Li Fei Guo Liyan Yu Jinming Zhou Shan Cen Institute of Medicinal Biotechnology Chinese Academy of Medical Science Institute of Pathogen Biology Chinese Academy of Medical Science

Human APOBEC3G(h A3G) is a cytidine deaminase which inhibits HIV-1 replication. The HIV-1 accessory protein viral infectivity factor(Vif) counteracts with hA3G by targeting it for proteasomal degradation. In this work, we constructed and optimized molecular models of the hA3G dimer and the h A3G–Vif complex. The molecular modeling study revealed that the loop7 motif of hA3G appears on the interfaces of both the h A3G–Vif complex and the hA3G dimer. Biochemical analysis provided evidence suggesting that binding of Vif to hA3G results in steric blocking of hA3G dimerization, implying that monomeric hA3G serves as a substrate for Vif-mediated ***, we presented evidence for the important roles of the loop7 motif, especially the central residues within the region, in hA3G dimerization, h A3G–Vif interaction, Vif-mediated hA3G degradation as well as subcellular localization of hA3G. This work highlights a multiple-task interface formed by loop7 motif, which regulates biological function of hA3G, thus providing the feasibility of the strategy of blocking Vif-mediated A3 G degradation by targeting the putative site around loop7.

关键词： HIV Vif APOBEC3G Motif Modeling hA3G–Vif complex hA3G dimer