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Exploring the impact of new particle formation events on PM_(2.5) pollution during winter in the Yangtze River Delta,China

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Journal of Environmental Sciences 2022年第1期34卷 75-83页

作者： Jinping Ou Qihou Hu Haoran Liu Shiqi Xu Zhuang wang Xiangguang Ji xinqi wang Zhouqing Xie Hui Kang Institute of Physical Science and Information Technology Anhui UniversityHefei 230601China Key Lab of Environmental Optics and Technology Anhui Institute of Optics and Fine MechanicsHefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China School of Environmental Science and Optoelectronic Technology University of Science and Technology of ChinaHefei 230026China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China Institute of Polar Environment&Anhui Province Key Laboratory of Polar Environment and Global Change Department of Environment Science and TechnologyUniversity of Science and Technology of ChinaHefei 230026China

New particle formation(NPF)events are an increasingly interesting topic in air quality and climate *** this study,the particle number size distributions,and the frequency of NPF events over Hefei were investigated from November 2018 to February *** proportions of the nucleation mode,Aitken mode,and accumulation mode were 24.59%,53.10%,and 22.30%,respectively,which indicates the presence of abundant ultrafine particles in ***-six NPF events occurred during the observation days,accounting for 41.82%of the entire observation ***,the favorable meteorological conditions,potential precursor gases,and PM_(2.5)range of the NPF events were *** to non-NPF days,the NPF events preferentially occurred on days with lower relative humidity,higher wind speeds,and higher *** the PM_(2.5) was 15–20,70–80,and105–115μg/m^(3),the frequency of the NPF events was *** mode particles were positively related to atmospheric oxidation indicated by ozone when PM_(2.5) ranged from 15 to 20μg/m^(3),and related to gaseous precursors like SO_(2) and NO_(2) when PM_(2.5)was located at 70-80 and 105–115μg/m^(3).On pollution days,NPF events did not directly contribute to the increase in the PM_(2.5) in the daytime,however,NPF events would occur during the night and the growth of particulate matter contributes to the nighttime PM_(2.5) *** could lead to pollution that lasted into the next *** findings are significant to the improvement of our understanding of the effects of aerosols on air quality.

关键词： New particle formation Aerosols PM_(2.5) Hefei Meteorological conditions

Parameters Optimization and Performance Evaluation of the Tuned Inerter Damper for the Seismic Protection of Adjacent Building Structures

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Computer Modeling in Engineering & Sciences 2024年第1期138卷 551-593页

作者： Xiaofang Kang Jian Wu xinqi wang Shancheng Lei Key Laboratory of Intelligent Underground Detection Technology School of Civil EngineeringAnhui Jianzhu UniversityHefei230601China Chengnan College Changsha University of Science and TechnologyChangsha410015China

In order to improve the seismic performance of adjacent buildings,two types of tuned inerter damper(TID)damping systems for adjacent buildings are proposed,which are composed of springs,inerter devices and dampers in serial or in *** dynamic equations of TID adjacent building damping systems were derived,and the H2 norm criterion was used to optimize and adjust them,so that the system had the optimum damping performance under white noise random *** TID frequency ratio and damping ratio as optimization parameters,the optimum analytical solutions of the displacement frequency response of the undamped structure under white noise excitation were *** results showed that compared with the classic TMD,TID could obtain a better damping effect in the adjacent *** the TIDs composed of serial or parallel,it was found that the parallel TIDs had more significant advantages in controlling the peak displacement frequency response,while the H2 norm of the displacement frequency response of the damping system under the coupling of serial TID was *** the adjacent building composed of two ten-story frame structures as an example,the displacement and energy collection time history analysis of the adjacent building coupled with the optimum design parameter TIDs were carried *** was found that TID had a better damping effect in the full-time range compared with the classic *** paper also studied the potential power of TID in adjacent buildings,which can be converted into available power resources during earthquakes.

关键词： Adjacent buildings tuned inerter damper(TID) H2 norm optimization vibration control energy harvesting

A Miniature Video Stabilization System for Flapping-Wing Aerial Vehicles

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Guidance, Navigation and Control 2022年第1期2卷 1-22页

作者： Qiang Fu xinqi wang Yao Zou Wei He School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing 100083P.R.China Institute of Arti¯cial Intelligence University of Science and Technology BeijingBeijing 100083P.R.China

In this paper,a miniature video stabilization system is designed to deal with the image jitter and motion blur problem for°apping-wing aerial vehicles(FWAVs).First,a light and two-axis pan–tilt(about 13 g)is built for the FWAV to counteract most of the jitter e®***,an electronic image stabilization method combined with a Micro-Electro Mechanical Systems(MEMSs)gyroscope is proposed to further stabilize the ***,°ight experiment results show that the designed video stabilization system e®ectively improves the quality of aerial videos.

关键词： Flapping-wing aerial vehicle image jitter pan-tilt MEMS gyroscope video stabilization

VqMAPK3/VqMAPK6, VqWRKY33, and VqNSTS3 constitute a regulatory node in enhancing resistance to powdery mildew in grapevine

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Horticulture Research 2023年第7期10卷 293-308页

作者： Wandi Liu Chaohui Yan Ruimin Li Guanyu Chen xinqi wang Yingqiang Wen Chaohong Zhang Xiping wang Yan Xu Yuejin wang College of Horticulture Northwest A&F UniversityYanglingShaanxi712100China Key Laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China Ministry of AgricultureYanglingShaanxi712100China State Key Laboratory of Crop Stress Biology in Arid Areas Northwest A&F UniversityYanglingShaanxi712100China

Grapevine powdery mildew is caused by Erysiphe necator,which seriously harms grape production in the *** synthase makes phytoalexins that contribute to the resistance of grapevine against powdery mildew.A novel VqNSTS3 was identified and cloned from Chinese wild Vitis quinquangularis accession *** novel VqNSTS3 was transferred into susceptible‘Thompson Seedless’by Agrobacterium-mediated *** transgenic plants showed resistance to the disease and activated other resistance-related ***3 expression in grapevine is regulated by VqWRKY33,and which binds to TTGACC in the VqNSTS3 ***,VqWRKY33 was phosphorylated by VqMAPK3/VqMAPK6 and thus led to enhanced signal transduction and increased VqNSTS3 ***3::VqNSTS3-GFP of transgenic VqNSTS3 in Arabidopsis thaliana was observed to move to and wrap the pathogen’s haustoria and block invasion by Golovinomyces *** results demonstrate that stilbene accumulation of novel VqNSTS3 of the Chinese wild Vitis quinquangularis accession Danfeng-2 prevented pathogen invasion and enhanced resistance to powdery ***,VqNSTS3 can be used in generating powdery mildew-resistant grapevines.

关键词： invasion expression. resistance

Effect of Low pH on Forming Process of Desulfurization Gypsum Composite Boards Strengthened by Melamine-formaldehyde Resin

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1223-1228页

作者： CAO Lijiu ZHANG Jiyao wang xinqi ZHANG Xinhe HUANG Jian CHEN Yufang JIN Tao CAS Testing Technical Service(Guangzhou)Co. Ltd.Guangzhou 510650China Xuefeng Innovation(Beijing)Technology Co. Ltd.Beijing 102200China Guangzhou Institute of Chemistry Chinese Academy of SciencesGuangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China

Through exploring the effects of low pH on the composite system of desulfurization gypsum(DG)enhanced by melamine-formaldehyde resin(MF),it is found that the inducing of sulfate-ion,in contrast to chloride and oxalate ions,favors the longitudinal growth of the crystalline form of the hydration product,which was relatively simple and had the highest length to width(L/D)*** the same time,MF can also improve L/D ratio of gypsum hydration products,which favors the formation of hydrated ***,in a composite system composed of hemihydrate gypsum,MF,and glass fibers,when dilute sulfuric acid was used to regulate pH=3-4,the tight binding formed among the components of the composite system compared to pH=*** hydration product of gypsum adheres tightly to glass fiber surface and produces a good cross-linking and binding effect with *** flexural strength,compressive strength,elastic modulus,and water absorption of the desulphurized gypsum composite board is 22.7 MPa,39.8 MPa,5608 MPa,and 1.8%,respectively.

关键词： MF-reinforced desulphurized gypsum board composite forming system low pH condition hydration process aspect ratio synergistic effect

New controllable premixed combustion for dimethyl ether engine

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Science Bulletin 2003年第11期48卷 1157-1160页

作者： SONG Jun,HUANG Zhen,QIAO xinqi,wang Wanli,FANG Junhua,ZHANG Guangde Shanghai Jiaotong Unversity School of Mechnical and Power Engineering Shanghai Jiaotong Unversity Shanghai 200030 China Shanghai 200030 China Shanghai 200030 China Shanghai 200030 China School of Mechnical and Power Engineering Shanghai 200030 China Shanghai 200030 China Shanghai Jiaotong Unversity School of Mechnical and Power Engineering Shanghai Jiaotong Unversity School of Mechnical and Power Engineering Shanghai Jiaotong Unversity School of Mechnical and Power Engineering Shanghai Jiaotong Unversity School of Mechnical and Power Engineering

A new concept of the controllable premixed combustion (CPC) system was proposed for dimethyl ether (DME) to explore a new approach to achieving ultra-low NOX emissions with the zero level of particulate matter exhaust emissions. The DME fuel was injected into the premix chamber by means of the electronically controlled low pressure injection system, then the mixture formation and combustion process were controlled with a control-valve set between the main chamber and the premix chamber. The test bench was constructed based on a single diesel engine. Preliminary studies demonstrated that ultra-low NOX emissions had been realized with zero particulate matter emissions under the optimum specifications of the DME engine, NOX emissions were less than 65 10-6. According to the engine combustion analysis, it was found that the control-valve played an important role in the pre-mixture formation and ignition timing.

关键词： dimethyl ether controllable premixed combustion emission performance combustion characteristic.

A Tuberculosis Outbreak at a School-Xinjiang Uygur Autonomous Region, China, 2019

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China CDC weekly 2020年第46期2卷 881-883页

作者： Senlu wang Yan Cui Nianqiang Liu Xijiang wang xinqi wang Weidong Wu Canyou Zhang Maiwulan Parehati Zhi Li Chunhui Yu Lijie Zhang Jun Cheng Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention UrumqiXinjiang Uygur Autonomous RegionChina Chinese Field Epidemiology Training Program BeijingChina Chinese Center for Disease Control and Prevention BeijingChina Suqian Center for Disease Control and Prevention SuqianJiangsu ProvinceChina Xin Jiang Field Epidemiology Training Program UrumqiXinjiang Uygur Autonomous RegionChina

Summary What is already known about this topic?Worldwide,tuberculosis(TB)continues to be the most important cause of death from a single infectious agent,and China has a high TB *** the reported incidence of TB in students is lower than that in general population,TB outbreaks in schools have continuously been reported in the past years,suggesting that schools are a high-risk setting for TB transmission.

关键词： death tuberculosis Xinjiang

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一种新型空间原子钟原型的原子频率移动分析

中国激光 2000年第5期27卷 401-406页

作者：王新旗王育竹中国科学院上海光机所量子光学开放研究实验室上海201800

原子频标中微波场与原子的作用方式是决定其潜在精度的主要因素之一。在分析作者建议的一种新型空间原子钟原型中原子与场作用特点的基础上 ,探讨几种因素对该原型中原子跃迁频率的影响及相应的减少频移措施。

关键词：原子跃迁频移激光冷却原子钟微重力

基于输出误差模型优化的甲板运动预报算法研究

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智能系统学报 2023年第1期18卷 75-85页

作者：王鑫琦朱齐丹哈尔滨工程大学智能科学与工程学院黑龙江哈尔滨150001

本文提出了一种适用于多种复杂海况的大型舰船甲板运动预报方法,目的在于提高算法对不同海域复杂海况的适用性,以及对甲板运动模型的辨识精度与预报精度。该方法通过将量测数据的时间滞后处理引入输出误差模型来描述甲板运动的动力学模... 详细信息

本文提出了一种适用于多种复杂海况的大型舰船甲板运动预报方法,目的在于提高算法对不同海域复杂海况的适用性,以及对甲板运动模型的辨识精度与预报精度。该方法通过将量测数据的时间滞后处理引入输出误差模型来描述甲板运动的动力学模型,引入定阶准则确定了模型最优阶数数对。在此基础上应用了辅助模型递推最小二乘算法进行系统参数辨识并估计输出误差模型中的状态变量。实验结果表明,本文所提出的预报方法在系统参数辨识阶段可以将递推最小二乘算法的辨识精度提高5.13%,并且在预报阶段可以有效地将甲板运动的幅值与相位预测精度提高3.17%。该方法在复杂海况下具备良好的预测性能,适用于大型舰船甲板运动预报。

关键词：大型舰船甲板极短期运动预报时间滞后模型最优阶数数对系统参数辨识输出误差模型状态变