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Assessing the premature death due to ambient particulate matter in China＇s urban areas from 2004 to 2013

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Frontiers of Environmental Science & Engineering 2016年第5期10卷 119-128页

作者： guoxia MA jinnan WANG Fang YU Xiaomin guo Yanshen ZHANG Chao LI Chinese Academy for Environmental Planning Beijing 100012 China Ministry of Environmental Protection of the People's Republic of China Beijing 100035 China

The Environmental Burden of Disease （EBD） approach for outdoor air pollution has been used to calculate premature deaths and average potential years of life lost attributable to air pollution in China over the past 10 years with differences between the North and the South of the country being *** results indicate that：（1） Between 2004 and 2013, annual premature deaths attributable to outdoor air pollution in China ranged from 350000 to 520000. In 2013, deaths resulting from air pollution in China represented 9.9% of the country＇s total deaths. （2） In 2004, the average life expectancy of the Chinese population and the number of potential years of life lost （PYLL） attributable to air pollutionwas 69.6 and 1.85 years respectively as compared to 74.4 and 0.67 years respectively in 2013. （3） The number of the PYLL attributable to air pollution in the northern regions of China is found to be larger than that of the southern regions. The PYLL figures of the northern and southern regions in 2004 were 2.3 and 1.8 years, respectively, with a difference of 0.5 years, as compared to 1.4 and 0.7 years respectively with a difference of 0.7 years in 2013.

关键词： Air pollution Public health Premature deaths Health assessment

两种中心静脉压测量途径在老年重症患者中应用比较

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中华现代护理杂志 2017年第17期23卷 2270-2275页

作者：邢宝坤绳宇夏莹桂岩胡珍珍郭劲男中国医学科学院北京协和医院保健医疗部ICU 100730 北京协和医学院护理学院 100144

目的比较在老年重症患者中经中央静脉置入中心静脉导管（CICC）和PICC两种不同途径测量的中心静脉压值是否一致.方法本研究为自身配对设计,通过对同时留置有CICC和PICC的患者测量中心静脉压时,经两种不同途径测量中心静脉压的值进行... 详细信息

目的比较在老年重症患者中经中央静脉置入中心静脉导管（CICC）和PICC两种不同途径测量的中心静脉压值是否一致.方法本研究为自身配对设计,通过对同时留置有CICC和PICC的患者测量中心静脉压时,经两种不同途径测量中心静脉压的值进行比较研究;通过对定量测量结果一致性评价的精度估算,应用枚举法算得当所需的样本量为70例时,精度即可满足要求.结果 70例样本数据显示,PICC法检测的CVP值为（7.995〈3.435）cmH2O,CICC法检测的CVP值为（7.743〈3.277）cmH2O,差异无统计学意义（t=1.622,P=0.109）.经两种不同途径测得的中心静脉压值的Pearson线性相关系数为0.926（P〈0.0001）.拟合经过原点的线性回归方程可得CVPPICC=1.023 CVPCICC,其R2值为0.978,预测线的95%CI包含了参考线.作Bland-Altman图可见64个样本落在一致性界限以内（-2.300-2.804）,一致率为91.43%,所有在LoA外的点均未超出LoA的95%CI范围.结论经中央静脉置入中心静脉导管和PICC两种不同途径测量的中心静脉压值具有高度的一致性,可以使用PICC代替经中央静脉置入中心静脉导管进行中心静脉压的监测.

关键词：中心静脉压经中央静脉置入中心静脉导管 PICC 重症患者

Cyclostratigraphy of the Induan (Early Triassic) in West Pingdingshan Section,Chaohu,Anhui Province

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Science China Earth Sciences 2008年第1期51卷 22-29页

作者： guo Gang TONG jinnan ZHANG ShiHong ZHANG Jie BAI LingYan GPMR and BGEG Laboratories at China University of Geosciences Wuhan 430074China School of the Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The Induan sequence in the West Pingdingshan Section, Chaohu, Anhui Province, displays a series of superimposed mudstone/limestone cycles. The lithological character of the cycles, combined with power spectral and wavelet analysis of magnetic susceptibility readings, reveals 12 short eccentricity and 56 precession Milankovitch cycles - obliquity cycles are not apparent. The uniformity of cycle thicknesses indicates a stable depositional setting making this section ideal to perform various geo-logical studies. Accordingly, the Induan Stage is estimated to have lasted 1.1 Ma, and the depositional rate for this part of the section is about 3.7 cm/ka. This places the Induan-Olenekian boundary in the West Pingdingshan Section at about 251.5 Ma based on an age of 252.6 Ma for the Permian-Triassic boundary.

关键词： Induan cyclostratigraphy magnetic susceptibility spectral analysis wavelet analysis Chaohu Anhui Province

Application of Drought-resistant Varieties in Urban Green Spaces

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Journal of Landscape Research 2014年第4期6卷 41-43页

作者： FU jinnan guo Jianjun LI Jiaxuan WANG Xiaoling GAO Zhu Institute of Microbiology Jiangxi Academy of Sciences Shanghai Key Laboratory of Urbanization Ecological Restoration East China Normal University Institute of Biological Resources Jiangxi Academy of SciencesJiangxi Engineering Research Center of Eco-Remedication of Heavy Metal Pollution

As the connotations of urban green spaces and urban eco-green spaces have been more realized,drought-resistant green spaces have become a unique development trend,and drought-resistant flowers have been more applied in green *** paper summarized characteristics of drought-resistant flowers,foreign and domestic researches in this field,advantages and disadvantages of their application in urban green spaces,and proposed key directions of the future researches.

关键词： Drought-resistant flowers Urban green spaces Application trend

An optimal medicinal and edible Chinese herbal formula attenuates particulate matter-induced lung injury through its anti-oxidative,anti-inflammatory and anti-apoptosis activities

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Chinese Herbal Medicines 2023年第3期15卷 407-420页

作者： Huan Zhang Jun Kang Wuyan guo Fujie Wang Mengjiao guo Shanshan Feng Wuai Zhou jinnan Li Ayesha T.Tahir Shaoshan Wang Xinjun Du Hui Zhao Weihua Wang Hong Zhu Bo Zhang TCM Network Pharmacology Department Tianjin Key Laboratory of Early Druggability Evaluation of Innovative DrugsTianjin International Joint Academy of BiomedicineTianjin 300457China School of Life Sciences Tianjin UniversityTianjin 300072China Chunfeng(Beijing)Health Technology Co. Ltd.Beijing 100176China Institute for TCM-X MOE Key Laboratory of BioinformaticsBioinformatics DivisionBNRistDepartment of AutomationTsinghua UniversityBeijing 100084China Department of Biosciences COMSAS University IslamabadIslamabad 44000Pakistan Tianjin Binhai New Area Han Gu Traditional Chinese Medical Hospitals Tianjin 300480China Key Laboratory of Food Nutrition and Safety Ministry of EducationTianjin University of Science and TechnologyTianjin 300457China School of Biotechnology and Food Science Tianjin University of CommerceTianjin 300134China Center of Pharmaceutical Technology Tsinghua UniversityBeijing 100084China Beijing Intelligent Medicine and Network Pharmacology Co. LtdBeijng 100020China

Objective:Identifying novel strategies to prevent particulate matter(PM)-induced lung injury is crucial for the reduction of the morbidity of chronic respiratory *** combined intervention represented by herbal formulae for simultaneously targeting multiple pathological processes can provide a more beneficial effect than the single *** aim of this paper is therefore to design a safe and effective medicinal and edible Chinese herbs(MECHs)formula against PM-induced lung ***:PM-induced oxidative stress,inflammatory response and apoptosis A549 cell model were used to screen anti-oxidant,anti-inflammatory and anti-apoptotic MECHs,respectively.A network pharmacology method was utilized to rationally design a novel herbal *** performance liquid chromatography-mass spectrometer was utilized to assess the quality control of MECHs *** excretion of magnetic iron oxide nanospheres of the MECHs formula was estimated in *** MECH formula against PM-induced lung injury was investigated with mice ***:Five selected herbs were rationally designed to form a new MECH formula,including Citri Exocarpium Rubrum(Juhong),Lablab Semen Album(Baibiandou),Atractylodis Macrocephalae Rhizoma(Baizhu),Mori Folium(Sangye)and Polygonati Odorati Rhizoma(Yuzhu).The formula effectively promoted the magnetic iron oxide nanospheres excretion in *** mid/high dose formula significantly prevented PM-induced lung damage in mice by enhancing the activity of SOD and GSH-Px,reducing the MDA and ROS level and attenuating the upregulation of pro-inflammatory cytokine(IL-6,IL-8,IL-1βand TNFa),down regulating the protein expression of NF-κB,STAT3 and ***:Our findings suggest that the effective MECHs formula will become a novel strategy for preventing PM-induced lung injury and provide a paradigm for the development of functional foods using MECHs.

关键词： apoptosis inflammatory response lung injury medicinal and edible Chinese herbs oxidative stress particulate matter

企业社交媒体使用加剧还是缓解员工情绪耗竭?情绪调节策略与工作自主性的作用

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中国人力资源开发 2022年第10期39卷 32-46页

作者：吴金南郭珊珊安徽工业大学商学院马鞍山243032 北京科技大学经济管理学院北京100083

员工在工作场所使用社交媒体从事社交活动的行为日益普遍,但是至今尚不清楚这种社交型企业社交媒体使用是加剧还是缓解了员工情绪耗竭。本研究基于工作要求-资源模型和情绪调节过程模型,构建了一个有调节的中介模型,研究认知重评和表达... 详细信息

员工在工作场所使用社交媒体从事社交活动的行为日益普遍,但是至今尚不清楚这种社交型企业社交媒体使用是加剧还是缓解了员工情绪耗竭。本研究基于工作要求-资源模型和情绪调节过程模型,构建了一个有调节的中介模型,研究认知重评和表达抑制对社交型企业社交媒体使用与情绪耗竭关系的双重中介作用,以及工作自主性的调节效应。对来自中国29个省份的506名在职员工的数据进行层次回归分析和Bootstrap检验,结果表明:社交型企业社交媒体使用通过认知重评降低情绪耗竭水平,但是通过表达抑制增加情绪耗竭水平;工作自主性增强认知重评在社交型企业社交媒体使用与情绪耗竭关系中的中介效应,但是没有调节表达抑制的中介效应。研究结论揭示了员工社交型企业社交媒体使用对情绪耗竭的影响机理和边界条件,丰富了企业社交媒体使用行为的相关研究,为理解数字工作环境下的员工情绪耗竭提供了新视角,并为改善员工职场健康提供了理论支撑。

关键词：企业社交媒体使用工作自主性认知重评表达抑制情绪耗竭

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西方城市规划对居住分异的影响及其启示

北京大学学报（自然科学版） 2024年第5期60卷 945-956页

作者：刘炜刘梦姿龚岳阙槿楠郭传民武汉大学城市设计学院湖北省人居环境工程技术研究中心武汉430072 澳门理工大学人文社科学院中国澳门999078 北京大学深圳研究生院城市规划与设计学院深圳518055

针对居住分异易引发社会隔离等城市问题,从城市规划的角度,探讨和总结其对居住分异的作用。通过文献综述及案例分析,发现西方城市规划直接而显著地影响城市居住分异格局,主要体现在三方面:1)土地利用区划的包容性以及开发密度影响居住... 详细信息

针对居住分异易引发社会隔离等城市问题,从城市规划的角度,探讨和总结其对居住分异的作用。通过文献综述及案例分析,发现西方城市规划直接而显著地影响城市居住分异格局,主要体现在三方面:1)土地利用区划的包容性以及开发密度影响居住分异程度;2)住房规划中的住房类型与产权多样性能缓解居住分异;3)在城市形态方面,城市规模、住区封闭性和建筑地块的面积等可能影响居住分异程度。从土地利用、住区模式和街区形态角度,对我国城市规划应对居住分异提出建议。

关键词：居住分异城市规划土地利用区划住房规划城市形态

数值模拟研究螺筒结构对单螺杆挤出机性能的影响

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塑料科技 2012年第10期40卷 74-78页

作者：王建郭迪陈晋南北京理工大学化工与环境学院北京100081

通过数值模拟研究了机筒内壁开螺槽的螺筒结构对单螺杆挤出机性能的影响。采用POLYFLOW软件模拟了硬质聚氯乙烯(PVC-R)熔体在单螺杆螺筒挤出机以及传统单螺杆挤出机中的三维等温流场及混合过程,并对二者的混合挤出性能进行了比较。结果... 详细信息

通过数值模拟研究了机筒内壁开螺槽的螺筒结构对单螺杆挤出机性能的影响。采用POLYFLOW软件模拟了硬质聚氯乙烯(PVC-R)熔体在单螺杆螺筒挤出机以及传统单螺杆挤出机中的三维等温流场及混合过程,并对二者的混合挤出性能进行了比较。结果表明:机筒内壁为螺旋沟槽结构的单螺杆螺筒挤出机,其混合性能相对于传统单螺杆挤出机有所提高。

关键词：螺筒挤出混合数值模拟

Structural Transition Dynamics in Carbon Electrode-Based Single-Molecule Junctions

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Chinese Journal of Chemistry 2021年第2期39卷 223-231页

作者： Peihui Li Chuancheng Jia Xuefeng guo Center of Single-Molecule Sciences Institute of Modern OpticsCollege of Electronic Information and Optical EngineeringNankai University38 Tongyan RoadJinnan DistrictTianjin300350 China Beijing National Laboratory for Molecular Sciences State Key Laboratory for Structural Chemistry of Unstable and Stable SpeciesCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing100871 China

Monitoring the structural transitions of individual molecules is of great significance because it helps to in depth explore the properties of molecules and provide diverse possibilities for molecular applications in the fields of chemistry,biology and material *** review summarizes the strategy of using single-molecule electrical approaches to study molecular structure transitions at the single-molecule level in real ***,through the use of stable single-molecule devices for real-time electrical monitoring,the process of molecular structure transitions of a single molecule can be investigated,which helps to explore the nature of molecules in chemical and biological *** particular,the detection methods have been extended to the investigation of biological macromolecules for monitoring the conformational changes of nucleotide chains in different systems,such as double helix DNA,aptamer and DNA *** the end,we discuss the future challenges of probing structural transitions of single molecules,and provide prospects for further breakthroughs in this field.

关键词： Structural transition Photoisomerism Molecular electronics Noncovalent interactions Stereoelectronic effect