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Fast spreading of surface ozone in both temporal and spatial scale in Pearl River Delta

Journal of Environmental Sciences 2024年第3期137卷 540-552页

作者： tianhui Cao Haichao Wang Lei Li Xiao Lu Yiming Liu Shaojia fan School of Atmospheric Sciences Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary Key Laboratory of Tropical Atmosphere-Ocean SystemMinistry of EducationZhuhai 519082China

Surface ozone(O_(3))is a major air pollutant and draw increasing attention in the Pearl River Delta(PRD),China.Here,we characterize the spatial-temporal variability of ozone based on a dataset obtained from 57 national monitoring sites during 2013-2019.Our results show that:(1)the seasonal difference of ozone distribution in the inland and coastal areas was significant,which was largely affected by the wind pattern reversals related to the East Asian monsoon,and local ozone production and destruction;(2)the daily maximum 8hr average(MDA8 O_(3))showed an overall upward trend by 1.11 ppbv/year.While the trends in the nine cities varied differently by ranging from-0.12 to 2.51 ppbv/year.The hot spots of ozone were spreading to southwestern areas from the central areas since 2016.And ozone is becoming a year-round air pollution problem with the pollution season extending to winter and spring in PRD region.(3)at the central and southwestern PRD cities,the percentage of exceedance days from the continuous type(defined as≥3 days)was increasing.Furthermore,the ozone concentration of continuous type was much higher than that of scattered exceedance type(<3 days).In addition,although the occurrence of continuous type starts to decline since2017,the total number of exceedance days during the continuous type is increasing.These results indicate that it is more difficult to eliminate the continuous exceedance than the scatter pollution days and highlight the great challenge in mitigation of O_(3)pollution in these cities.

关键词： Surface ozone pollution Ozone trend Spatial and temporal variability Pearl River Delta Pollution mitigation

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AN ASSIGNMENT METHOD FOR GROUP DECISION MAKING WITH UNCERTAIN PREFERENCE ORDINALS

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Journal of Systems Science and Systems Engineering 2012年第2期21卷 174-183页

作者： tianhui YOU Zhiping fan Zhuchao YU School of Business Administration Northeastern UniversityShenyang110819China

This paper presents an assignment method to solve the group decision making problem with uncertain preference information. The uncertain preference information is given as uncertain preference ordinals by decision makers. We first address the concept and calculation formulae of preference ordinal frequency, and then, uncertain preference ordinals are transformed into preference ordinal frequencies accordingly. Furthermore, a linear assignment model is built based on the derived preference ordinal frequencies, and the ranking of alternatives can be obtained by solving the model. Finally, a numerical example is used to illustrate the use of the proposed method.

关键词： Group decision making （GDM） uncertain preference ordinal preference ordinal frequency,linear assignment model ranking of alternatives

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Enhancement of solar-driven photocatalytic activity of oxygen vacancy-rich Bi/BiOBr/Sr_(2)LaF_(7)∶Yb^(3+),Er^(3+)composites through synergetic strategy of upconversion function and plasmonic effect

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Journal of Environmental Sciences 2022年第5期34卷 76-87页

作者： Yongjin Li Yingying Zhang Jiajing Wang Youzhun fan Taizhong Xiao Zhaoyi Yin tianhui Wang Jianbei Qiu Zhiguo Song School of Materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China

For better use of solar energy,the development of efficient broadband photocatalyst has attracted extraordinary attention.In this study,a ternary composite consisting of Sr_(2)LaF_(7)∶Yb^(3+),Er^(3+)upconversion(UC)nanocrystals and Bi nanoparticles loaded BiOBr nanosheets with oxygen vacancies(OVs,SLFBB)was designed and synthesized by multi-step solvent-thermal method.Mechanisms of in-situ formation of Bi nanoparticles and OVs in BiOBr/Sr_(2)LaF_(7)∶Yb^(3+),Er^(3+)composites(SFLB)are clarified.The Bi metal and OVs enhanced the light-harvesting capacity in the region of visible-near-infrared(Vis-NIR),and promoted the separation of electron-hole(e-/h+)pairs.Furthermore,the surface plasmon resonance(SPR)effect of Bi metal can improve the energy transfer from Sr_(2)LaF_(7)∶Yb^(3+),Er^(3+)to BiOBr via nonradiative energy transfer process,resulting in enhancing the light utilization from up-converting NIR into Vis light.Due to the synergistic effects of UC function,SPR and OVs,the SFLBB exhibited obviously enhanced photocatalytic ability for the degradation of BPA with a rate of 8.9×10^(-3) min^(-1),which is about 2.78 times higher than 3.2×10^(-3) min^(-1) of BiOBr(BOB)under UV-Vis-NIR light irradiation.This work provides a novel strategy for the project of high-efficiency Bismuth-based broadband photocatalysts,which is helpful to fur-ther understand the mechanism of enhanced photocatalysis by UC function and plasmonic effect.

关键词： BiOBr/Sr_(2)LaF_(7)∶Yb^(3+),Er^(3+)composites In-situ generation Bi metal Oxygen vacancies Broadband photocatalysis

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Probability Analysis of the Wave-Slamming Pressure Values of the Horizontal Deck with Elastic Support

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Journal of Ocean University of China 2018年第3期17卷 507-515页

作者： ZUO Weiguang LIU Ming fan tianhui WANG Pengtao North China University of Water Resources and Electric Power Zhengzhou 450045 China CCCC First Harbor Engineering Company Ltd. Tianjin 300461 China South China University of Technology Guangzhou 510640 China

This paper presents the probability distribution of the slamming pressure from an experimental study of regular wave slamming on an elastically supported horizontal deck. The time series of the slamming pressure during the wave impact were first obtained through statistical analyses on experimental data. The exceeding probability distribution of the maximum slamming pressure peak and distribution parameters were analyzed, and the results show that the exceeding probability distribution of the maximum slamming pressure peak accords with the three-parameter Weibull distribution. Furthermore, the range and relationships of the distribution parameters were studied. The sum of the location parameter D and the scale parameter L was approximately equal to 1.0, and the exceeding probability was more than 36.79% when the random peak was equal to the sample average during the wave impact. The variation of the distribution parameters and slamming pressure under different model conditions were comprehensively presented, and the parameter values of the Weibull distribution of wave-slamming pressure peaks were different due to different test models. The parameter values were found to decrease due to the increased stiffness of the elastic support. The damage criterion of the structure model caused by the wave impact was initially discussed, and the structure model was destroyed when the average slamming time was greater than a certain value during the duration of the wave impact. The conclusions of the experimental study were then described.

关键词：撞击压力概率分析波浪价值弹性水准甲板 Weibull

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Inhibition of gasdermin D-dependent pyroptosis attenuates the progression of silica-induced pulmonary inflammation and fibrosis

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Acta Pharmaceutica Sinica B 2022年第3期12卷 1213-1224页

作者： Meiyue Song Jiaxin Wang Youliang Sun Junling Pang Xiaona Li Yuan Liu Yitian Zhou Peiran Yang tianhui Fan Ying Liu Zhaoguo Li Xianmei Qi Baicun Li Xinri Zhang Jing Wang Chen Wang State Key Laboratory of Medical Molecular Biology Department of PhysiologyInstitute of Basic Medical Sciences Chinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijing 100730China Tsinghua-Peking Center for Life Sciences Department of BiologyCollege of MedicineTsinghua UniversityBeijing 100084China School of Pharmaceutical Sciences Tsinghua UniversityBeijing 100084China Department of Pulmonary and Critical Care Medicine Center of Respiratory MedicineChina-Japan Friendship HospitalBeijing 100029China National Clinical Research Center for Respiratory Diseases Beijing 100029China Peking Union Medical College Chinese Academy of Medical SciencesBeijing 100730China Peking Union Medical College MD ProgramBeijing 100730China Department of Respiratory the Second Affiliated Hospital of Harbin Medical UniversityHarbin 150086China Department of Pulmonary and Critical Care Medicine the First Hospital of Shanxi Medical UniversityTaiyuan 030001China

Silicosis is a leading cause of occupational disease-related morbidity and mortality worldwide,but the molecular basis underlying its development remains unclear.An accumulating body of evidence supports gasdermin D(GSDMD)-mediated pyroptosis as a key component in the development of various pulmonary diseases.However,there is little experimental evidence connecting silicosis and GSDMD-driven pyroptosis.In this work,we investigated the role of GSDMD-mediated pyroptosis in silicosis.Single-cell RNA sequencing of healthy and silicosis human and murine lung tissues indicated that GSDMD-induced pyroptosis in macrophages was relevant to silicosis progression.Through microscopy we then observed morphological alterations of pyroptosis in macrophages treated with silica.Measurement of interleukin-1βrelease,lactic dehydrogenase activity,and real-time propidium iodide staining further revealed that silica induced pyroptosis of macrophages.Additionally,we verified that both canonical(caspase-1-mediated)and non-canonical(caspase-4/5/11-mediated)signaling pathways mediated silica-induced pyroptosis activation,in vivo and in vitro.Notably,Gsdmd knockout mice exhibited dramatically alleviated silicosis phenotypes,which highlighted the pivotal role of pyroptosis in this disease.Taken together,our results demonstrated that macrophages underwent GSDMD-dependent pyroptosis in silicosis and inhibition of this process could serve as a viable clinical strategy for mitigating silicosis.

关键词： Silicosis Gasdermin D Pyroptosis Macrophage Pulmonary fibrosis

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广东海域风电场风浪联合分布研究

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中国造船 2022年第6期63卷 273-284页

作者：王凯万远琛刘天辉樊天慧麦志辉吴韩中山大学海洋工程与技术学院珠海519082 华南理工大学土木与交通学院广州510641 广东精铟海洋工程股份有限公司佛山528000

为了对风电场海况进行评估,以2010-2019年广东海域平均风浪时均数据为基础,选取5个风电站点的风况、波浪参数进行了长期联合分布拟合。采用双参数韦布尔分布模型计算平均风速的边缘分布,并采用Lonowe模型计算波高的边缘分布,以此为基础... 详细信息

为了对风电场海况进行评估,以2010-2019年广东海域平均风浪时均数据为基础,选取5个风电站点的风况、波浪参数进行了长期联合分布拟合。采用双参数韦布尔分布模型计算平均风速的边缘分布,并采用Lonowe模型计算波高的边缘分布,以此为基础结合正态分布得出波浪周期的分布以及平均风速、波高和波浪周期三者的联合概率密度分布,最后结合罗森布拉特变换得到50年重现周期的轮廓面。所开发的风浪联合概率分布模型及其分布轮廓面为广东海域风电场风力机结构在极端海况下的动力响应分析提供环境输入参数,并为广东海域风电场建设、评估提供有效的指导。

关键词：广东海域风电场建设长期统计风浪联合分布

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我国医养结合养老模式发展现状研究

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护理研究 2018年第11期32卷 1691-1693页

作者：夏天慧范玲中国医科大学附属盛京医院

对医养结合养老模式的产生背景、概念类型、现存问题等进行分析并提出若干建议,为未来医养结合养老模式的可持续发展提供理论参考。

关键词：医养结合养老模式老龄化养老需求社区护理综述

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Irradiation effects in polycarbonate induced by 2.1 GeV Kr ions

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Nuclear Science and Techniques 2003年第4期14卷 242-245页

作者： tianhui-Xian JINYun-fan ZHUZhi-Yong SUNYou-Mei WANGZhi-Guang InstituteofAppliedPhysicsandComputationalMathematics Beijing100088 InstituteofModernPhysics theChineseAcademyofSciencesLanzhou730000

Polycarbonate foil stacks were irradiated with 2.1 GeV Kr ions under vacuum at room temperature.The modifications in chemical structure induced by the irradiation were studied by means of Fourier transform infra-red (FTIR) and ultraviolet visible (UV/VIS) spectroscopies. FTIR measurements reveal that material degradationsthrough bond breaking are the main effects. Alkyne end groups are produced by the irradiation. UV/VIS measure-ments indicate a shifting of the absorption edge from ultraviolet towards visible, and a strong increase of absorbancein the ultraviolet and visible regions. The changes in absorbance induced by the irradiation at wavelengths of 380 nm,450 nm and 500 nm scale well with Sne (Se is electronic energy loss) where the value of n increases from 1.69 to 2.02with increasing of the wavelength. The results are briefly discussed.

关键词：辐射防护聚碳酸酯氪 Fourier变换降解机制锗

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鸟巢式多功能新生儿护理用具的设计及应用

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中华护理杂志 2020年第9期55卷 1436-1438页

作者：范歆颀叶天惠华中科技大学同济医学院附属同济医院新生儿科武汉市430030 华中科技大学同济医学院附属同济医院儿科武汉市430030

目的设计并制作鸟巢式多功能新生儿护理用具,探讨其在早产儿中的应用效果。方法设计出的鸟巢式多功能新生儿护理用具由八角12边形的底单与8根系带组成。按照时间顺序,将2018年5月—12月武汉市某医院收治的197例早产儿作为试验组,使用鸟... 详细信息

目的设计并制作鸟巢式多功能新生儿护理用具,探讨其在早产儿中的应用效果。方法设计出的鸟巢式多功能新生儿护理用具由八角12边形的底单与8根系带组成。按照时间顺序,将2018年5月—12月武汉市某医院收治的197例早产儿作为试验组,使用鸟巢式多功能新生儿护理用具实施鸟巢式护理;将2017年5月—12月收治的194例早产儿作为对照组,应用新生儿大床单布卷实施鸟巢式护理,比较两组体位支持有效率及扁头综合征发生率。结果最终试验组192例、对照组186例完成研究。试验组体位支持有效率为91.0%,对照组为76.8%,两组比较,差异有统计学意义(χ~2=113.571,P<0.001);试验组扁头综合征发生率为8.3%,对照组为27.4%,两组比较,差异有统计学意义(χ~2=23.599,P<0.001)。结论使用鸟巢式多功能新生儿护理用具实施鸟巢式护理,可以有效改善早产儿体位支持效果,同时降低扁头综合征的发生率。

关键词：鸟巢式护理早产儿扁头综合征新生儿护理

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可行能力视域下新生代农民工多维相对贫困识别指标体系构建与实证测度

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中国西部 2021年第6期 1-14页

作者：杨帆庄天慧四川大学公共管理学院成都610065 四川农业大学经济学院成都611130

新生代农民工已成为农民工群体的中坚力量,在城市建设中发挥着重要作用,但同时也是城市相对贫困群体。文章在可行能力理论指导下,构建新生代农民工多维相对贫困识别指标体系,利用中国劳动力动态调查数据,运用多维贫困测度方法,测度新生... 详细信息

新生代农民工已成为农民工群体的中坚力量,在城市建设中发挥着重要作用,但同时也是城市相对贫困群体。文章在可行能力理论指导下,构建新生代农民工多维相对贫困识别指标体系,利用中国劳动力动态调查数据,运用多维贫困测度方法,测度新生代农民工的多维相对贫困状况。研究结果表明:(1)从单维来看,专业技术、技术培训、失业保险、工伤保险、闲暇时间、现代技能、工会加入等指标的贫困发生率较高;(2)从多维来看,以3个指标被剥夺界定多维相对贫困,新生代农民工的多维相对贫困发生率达61.30%,多维贫困指数达25.10%;(3)从指标贡献度均值来看,位列前三的依次是工会加入、劳动合同和收入水平;(4)从维度贡献度均值来看,由大到小依次是政治权益、防护性保障、透明性保证、社会机会、经济条件。

关键词：新生代农民工多维贫困相对贫困多维贫困测度方法精准扶贫

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