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Exploring formation mechanism and source attribution of ozone during the 2019 Wuhan Military World Games:Implications for ozone control strategies

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Journal of Environmental Sciences 2024年第2期136卷 400-411页

作者： Lei Zhang Lili wang runyu wang Nan Chen Yuan Yang Ke Li Jie Sun Dan Yao Yuesi wang Minghui Tao Yang Sun Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China Hubei Ecological Environment Monitoring Center Station Wuhan 430072China Guizhou Research and Designing Institute of Environmental Sciences Guizhou Academy of Environmental Science and DesignGuiyang 550081China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China School of Environment Key Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of EducationHenan Normal UniversityXinxiang 453007China Key Laboratory of Regional Ecology and Environmental Change School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China

A series of emission reduction measures were conducted in Wuhan,Central China,to ensure good air quality during the 7th Military World Games(MWG)in October *** better understand the implications for ozone(O_(3))pollution control strategies,we applied integrated analysis approaches based on the de-weathered statistical model,parameterization methods,chemical box model,and positive matrix factorization *** the MWG,concentrations of O_(3),NO_x,and volatile organic compound(VOCs),OFP(O_(3)formation potential),L_(OH)(OH radical loss rate)were 83μg/m^(3),43μg/m^(3),26 ppbv,188μg/m^(3),and 3.9 s^(-1),respectively,which were 26%,18%,3%,15%,and 13%lower than pre-MWG values and 6%,39%,30%,33%,and 50%lower than post-MWG values,*** removing meteorological influence,O_(3)and its precursors during the MWG decreased largely compared with post-MWG values,and only O_(3),NO_(2),and oxygenated VOCs(OVOCs)declined compared with pre-MWG values,which revealed the emission reduction measures during the MWG played an important role for O_(3)*** six VOCs sources,the mass contributions of biomass burning and solvents usage during the MWG decreased largely compared with pre-MWG values.O_(3)production was sensitive to VOCs and the key species were aromatics,OVOCs,and alkenes,which originated mainly from solvents usage,biomass burning,industrial-related combustion,and vehicle *** O_(3)concentration during the strict control was mainly caused by OVOCs reduction due to biomass burning ***,the O_(3)abatement strategies of Wuhan should be focused on the mitigation of high-reactivity VOCs.

关键词： VOCs Ozone Wuhan Military World Games Source apportionment Relative incremental reactivity Random forest

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暗渠抢险工程的质量安全管理

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南水北调与水利科技（中英文） 2024年第S01期22卷 132-135页

作者：王永军吴小海王润雨中国南水北调集团中线有限公司河北分公司石家庄050035 中国南水北调集团中线有限公司北京分公司北京100085

超大规模跨流域调水工程因其线路长、跨度大,受气候影响明显,特别是汛期局部地区的超标准洪水,对埋深较浅的暗渠安全威胁很大,极易造成工程损毁,甚至造成供水中断。调水工程抢险项目时间紧、任务重,必须进行科学合理的组织协调,并结合... 详细信息

超大规模跨流域调水工程因其线路长、跨度大,受气候影响明显,特别是汛期局部地区的超标准洪水,对埋深较浅的暗渠安全威胁很大,极易造成工程损毁,甚至造成供水中断。调水工程抢险项目时间紧、任务重,必须进行科学合理的组织协调,并结合工程实际,制定高效可行的质量安全管控措施,才能实现抢险阶段质量可靠和安全可控,确保抢险工程如期完工并正常发挥经济社会效益。

关键词：暗渠抢险质量安全管理

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回填砂砾料地基振冲挤密加固处理及质量控制

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南水北调与水利科技（中英文） 2024年第S01期22卷 161-164页

作者：范中亮王润雨魏新江中国南水北调集团中线有限公司河南分公司郑州450000 中国南水北调集团中线有限公司北京分公司北京100000 中国南水北调集团中线有限公司河北分公司石家庄050000

振冲挤密加固处理主要通过振冲器的强烈振动使基础颗粒重新排列、孔隙减少,依靠振冲器的水平振动力,把回填的粗集料挤入周边介质并将孔内粗集料压实,从而提高地基承载力。广泛应用在各类土的液化处理、砂土以及湿陷性土等基础的加固处理... 详细信息

振冲挤密加固处理主要通过振冲器的强烈振动使基础颗粒重新排列、孔隙减少,依靠振冲器的水平振动力,把回填的粗集料挤入周边介质并将孔内粗集料压实,从而提高地基承载力。广泛应用在各类土的液化处理、砂土以及湿陷性土等基础的加固处理,水下回填砂砾料基础由于砂砾料颗粒直径大、强度高,振冲挤密难以处理至设计深度,使用较少。

关键词：水下回填砂砾料振冲挤密加固处理质量控制

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Temporal and spatial variations of low-molecular-weight organic acids in Dianchi Lake, China

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Journal of Environmental Sciences 2011年第8期23卷 1249-1256页

作者： Min Xia Fengchang Wu runyu Zhang Liying wang XinqingLi Rongsheng Huang State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002 China.

Low-molecular-weight organic acids （LMWOAs） in eutrophic lake water of Dianchi, Southwestern China Plateau were investigated diurnally and vertically using ion chromatography. Two profiles （P1 and P2） were studied due to the difference of hydrochemical features. Lactic, formic, pyruvic and oxalic acid were detected as major components at P1 and P2 which were on average 7.98 and 6.53 ~tmol/L, respectively, corresponding to their proportions of 2.68% and 2.48% relative to DOC. Pyruvic acid was regarded as the uppermost species at P1 and P2, reaching up to 3.82 and 3.35 μmol/L and accounting for 47.9% and 51.3%, respectively, in individual TOA. Although humus were of biogenetic production at both sites, the significant negative correlation between diurnal variations of TOAs, fluorescence intensity （FI） of protein-like components and humic-like components at P1 indicated LMWOAs were greatly originated from bacterioplankton excretion and degradation. However, correlations between diurnal variations of humic-like FI and physicochemical parameters demonstrated algal origination of LMWOAs at P2. Although content of humus was high, TOA at P2 was 1.45 ~tmol/L lower than that at P1, due to the co-influence of more intense photo-oxidation and aggregation at P2. Therefore, TOAs exhibited quite opposite diurnal variation trends of increasing-decreasing and decreasing-increasing at P1 and P2, respectively. Except for impact of solar radiation, bacterial decomposition and assimilation rendered shifts of maximal LMWOAs along water column at P1. Covering with massive algae, UV rays penetrated shallower depth that LMWOAs assembled in surface layer water before 18：00 at P2 and represented decreasing profiles.

关键词： Dianchi Lake, humus, algae solar radiation low-molecular-weight organic acids

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水煤浆添加剂TS-M1对几种煤成浆效果的试验研究

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煤化工 2024年第1期52卷 56-59页

作者：胡兴刚王润宇陈志强中海油天津化工研究设计院有限公司天津300131 天津正达科技有限责任公司天津300308

为了考察复合高效水煤浆添加剂TS-M1在水煤浆制浆中的整体成浆效果,以4种特定的煤种为制浆对象,对煤浆质量分数、黏度、流动性及稳定性等进行了量化分析。试验结果及现场应用情况表明:针对煤气化项目现场的应用条件及4种特定煤种,复合... 详细信息

为了考察复合高效水煤浆添加剂TS-M1在水煤浆制浆中的整体成浆效果,以4种特定的煤种为制浆对象,对煤浆质量分数、黏度、流动性及稳定性等进行了量化分析。试验结果及现场应用情况表明:针对煤气化项目现场的应用条件及4种特定煤种,复合高效水煤浆添加剂TS-M1在常规添加量1‰~4.5‰范围内,可制得最高成浆质量分数分别为64%、63.5%、65%和68%的水煤浆,同时能保持良好的煤浆黏度、流动性及稳定性。

关键词：水煤浆 TS-M1添加剂成浆性粒度级配

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Electrical property enhancement and lattice thermal conductivity reduction of n-type Mg_(3)Sb_(1.5)Bi_(0.5)-based Zintl compound by In&Se co-doping

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Journal of Materiomics 2023年第3期9卷 431-437页

作者： Tong Liu Jiansong Liao Hang Liu runyu wang Guocai Yuan Jing Jiang Yi Niu Xiaobo Lei Lihong Huang Chao wang Qinyong Zhang Key Laboratory of Fluid and Power Machinery of Ministry of Education School of Materials Science&EngineeringXihua UniversityChengdu610039China Clean Energy Materials and Engineering Center State Key Laboratory of Electronic Thin Film and Integrated DeviceSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China

Mg_(3)Sb_(1.5)Bi_(0.5)-based Zintl compounds have attracted extensive attention as potential thermoelectric materials due to their earth-abundant ***,pure and intrinsic Mg_(3)Sb_(1.5)Bi_(0.5)manifests a poor thermoelectric performance because of its low electrical conductivity of about 3×10^(2)S/m at room *** this work,In and Se co-doping was carried out to optimize the thermoelectric perfor-mance of n-type Mg_(3)Sb_(1.5)Bi_(0.5)-based *** experimental results revealed that the carrier con-centration and mobility of Mg_(3)Sb_(1.5)Bi_(0.5)significantly increased after In and Se co-doping,leading to an improvement of power ***,lattice thermal conductivity was significantly reduced due to the large mass difference between In and Mg.A maximum zT of 1.64 at 723 K was obtained for the Mg_(3.17)In_(0.03)Sb_(1.5)Bi_(0.49)Se_(0.01)*** an average zT value of about 1.1 between 300 and 723 K was achieved,which insures its possible application at medium temperature range as a non-toxic and low-cost TE material.

关键词： Zintl compound Thermoelectric property n-type Mg_(3)Sb_(1.5)Bi_(0.5) In&Se co-doping

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酸性电解水理化性质及其脱色能力研究

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山西化工 2024年第7期44卷 11-13,23页

作者：李邦玉陈梅何莎莎苏盈盈王润宇苏州市职业大学应用化学研究所江苏苏州215000 扬州大学江苏扬州225001 常州大学江苏常州213164

初步比较了4种强电解质酸性电解水理化数据,考察了NaCI酸性电解水理化参数受温度、时间和浓度的影响。实验分析了浓度为0.43 mol/L的NaCI酸性电解水脱色性能。结果表明,不同电解质的酸性电解水理化参数与其表观解离度有正相关性。随电... 详细信息

初步比较了4种强电解质酸性电解水理化数据,考察了NaCI酸性电解水理化参数受温度、时间和浓度的影响。实验分析了浓度为0.43 mol/L的NaCI酸性电解水脱色性能。结果表明,不同电解质的酸性电解水理化参数与其表观解离度有正相关性。随电解质浓度、温度等变化,NaCI酸性电解水pH值降低、氧化电位值(ORP)、电导率(σ)和余氯含量(ACC)相应发生变化。酸性电解水与染料溶液体积比为1:1时,对红色、黄色、蓝色、印花蓝、藏青、黑色染料,1 min脱色率均高达90%以上。

关键词：酸性电解水理化性能氧化性脱色

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2.4μm波段全正色散飞秒克尔透镜锁模激光器(特邀)

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红外与激光工程 2021年第8期50卷 43-48页

作者：王润雨王庆北京理工大学光电学院北京100081 光电成像技术与系统教育部重点实验室北京100081

2μm波段的飞秒激光光源在高分辨分子光谱学、中红外光学频率梳产生和超宽光谱的中红外光源产生等方面都具有重要的应用价值。Cr:ZnS/ZnSe具有很宽的发射峰,使其成为该波段产生宽光谱短脉冲中红外飞秒激光的重要材料。全正色散锁模的飞... 详细信息

2μm波段的飞秒激光光源在高分辨分子光谱学、中红外光学频率梳产生和超宽光谱的中红外光源产生等方面都具有重要的应用价值。Cr:ZnS/ZnSe具有很宽的发射峰,使其成为该波段产生宽光谱短脉冲中红外飞秒激光的重要材料。全正色散锁模的飞秒激光由于更容易实现较短的脉冲宽度与较高的峰值功率而受到青睐。文中在Cr:ZnS上实现全正色散条件下的克尔透镜锁模运转。在5.1 W的泵浦功率下实现波长覆盖范围2.0~2.7μm,平均功率660 m W,脉冲宽度37 fs的稳定锁模脉冲输出,这是首次在Cr:ZnS中实现全正色散锁模运转的固体激光器。Cr:ZnS全正色散锁模的飞秒激光器在高分辨分子光谱学、宽光谱中红外光光源产生等方面具有广阔的应用前景。

关键词：全正色散克尔透镜锁模 Cr:ZnS 中红外飞秒激光

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Optically-generated focused ultrasound for noninvasive brain stimulation with ultrahigh precision

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Light(Science & Applications) 2022年第11期11卷 2817-2831页

作者： Yueming Li Ying Jiang Lu Lan Xiaowei Ge Ran Cheng Yuewei Zhan Guo Chen Linli Shi runyu wang Nan Zheng Chen Yang Ji-Xin Cheng Department of Mechanical Engineering Boston UniversityBostonMA 02215USA Graduate Program for Neuroscience Boston UniversityBostonMA 02215USA Department of Electrical and Computer Engineering Boston UniversityBostonMA 02215USA Department of Chemistry Boston UniversitBostonMA 02215USA Department of Biomedical Engineering Boston UniversityBostonMA 02215USA Division of Materials Science and Engineering Boston UniversityBostonMA 02215USA Department of Biological Engineering Massachusetts Institute of TechnologyCambridgeMA 02142USA

High precision neuromodulation is a powerful tool to decipher neurocircuits and treat neurological *** non-invasive neuromodulation methods offer limited precision at the milimeter ***,we report opticallygenerated focused ultrasound(OFUS)for non-invasive brain stimulation with ultrahigh *** is generated by a soft optoacoustic pad(SOAP)fabricated through embedding candle soot nanoparticles in a curved polydimethylsiloxane *** generates a transcranial ultrasound focus at 15 MHz with an ultrahigh lateral resolution of 83μm,which is two orders of magnitude smaller than that of conventional transcranial-focused ultrasound(tFUS).Here,we show effective OFUS neurostimulation in vitro with a single ultrasound *** demonstrate submillimeter transcranial stimulation of the mouse motor cortex in *** acoustic energy of 0.6 mJ/cm?,four orders of magnitude less than that of tFUS,is suffcient for successful OFUS *** offers new capabilities for neuroscience studies and disease treatments by delivering a focus with ultrahigh precision noninvasively.

关键词： SOAP stimulation precision

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Single-cell protein-DNA interactomics and multiomics tools for deciphering genome regulation

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National Science Open 2023年第3期2卷 64-82页

作者： Haiqing Xiong runyu wang Aibin He State Key Laboratory of Experimental Hematology National Clinical Research Center for Blood DiseasesHaihe Laboratory of Cell EcosystemInstitute of Hematology&Blood Diseases HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin 300020China Peking University-Tsinghua University-National Institute of Biological Science Joint Graduate Program Academy for Advanced Interdisciplinary StudiesPeking UniversityBeijing 100871China Institute of Molecular Medicine College of Future TechnologyPeking-Tsinghua Center for Life SciencesPeking UniversityBeijing 100871China

The emergence of single-cell genomic and transcriptomic sequencing accelerates the development of single-cell epigenomic technologies,providing an unprecedented opportunity for decoding cell fate decisions largely encoded in the *** advances in single-cell multimodality epigenomic technologies facilitate directly interrogating the reg-ulatory relationship between multi-layer molecular information in the same *** this review,we discuss recent progress in development of single-cell multimodality epigenomic technologies and applications in elucidating cellular diversifications in development and diseases,with a focus on protein-DNA interactomics and regulatory links between epigenome and ***,we provide perspective on the future direction of single-cell multiomics tool development as well as challenges facing ahead.

关键词： single-cell protein-DNA interaction single-cell multiomics single-cell epigenomics epigenome genome regulation

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