Results 1 to 10 of about 566 (92)

Keeping Fit in the Smog: Health, Self-Tracking and Air Pollution in Post-socialist China [PDF]

open access: yes, 2021
Special Section: Self-Tracking, Embodied Differences, and the Politics and Ethics of HealthThis article concerns the relation between health, the embodied self-tracking subject and the environment in postsocialist China.
Liu, Xin
core   +1 more source

Highly Efficient Biotransformation of Astragaloside IV to Cycloastragenol by Sugar-Stimulated ¥ é-Glucosidase and é é-Xylosidase from Dictyoglomus thermophilum

open access: yesJournal of Microbiology and Biotechnology, 2019
β-Glucosidases and β-xylosidases are two categories of enzymes that could cleave out nonreducing, terminal β-D-glucosyl and β-D-xylosyl residues with release of D-glucose and Dxylose, respectively. In this paper, two functional β-glucosidase Dth3 and β-xylosidase Xln-DT from Dictyoglomus thermophilum were heterologously expressed in E.coli BL21 (DE3 ...
Qi, Li   +5 more
openaire   +3 more sources

雾霾人工模拟试验平台搭建及雾霾模拟方法研究

open access: yesDianci bileiqi, 2020
雾霾环境中含有大量的可溶性和不可溶性污染物,在重力、电场力等作用下逐渐沉积在绝缘子表面,给输变电设备的外绝缘带来较大威胁。为了研究雾霾对电力系统输变电设备外绝缘的影响,搭建了雾霾人工模拟试验平台,分别利用电蒸汽锅炉和固体气溶胶发生器产生雾霾中的雾颗粒和霾颗粒。在此基础上,对人工模拟雾霾中最为复杂的霾制备与生成方式进行了研究,分析了固体颗粒物研磨与添加程序对雾霾浓度的影响,提出了人工雾霾模拟的方法,并对人工雾霾模拟效果进行验证,试验结果表明,所模拟的人工雾霾参数满足后续绝缘子试验要求。
高嵩   +5 more
doaj  

A heavy haze episode in Hangzhou city in the winter of 2017: Characteristics of PM2.5 water-soluble components, causes and origins(杭州市2017 年冬季一次重灰霾过程中PM2.5水溶性离子特征、来源及成因分析)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2019
利用在线监测仪测量了杭州市一次重灰霾过程(2017年12月29日至2018年1月3日) 中PM2.5主要水溶性离子(Cl- 、SO42- 、NO3- 、NH4+ 、Na+ 、Ga2+ 、Mg2+) 及主要气态污染物(SO2、NO2、O3、NO、CO、 HCl、NH3、HNO2、HNO3) 的小时浓度。结合混合受体模型和国控监测分析,研究了2017 年12 月30-31 日重灰霾事件的污染特征、来源和成因。研究结果表明:PM2.5 浓度高达318 μg·m-3; NO3-/SO42-最大值为2.68 ...
WANGPeng(汪鹏)   +8 more
doaj   +1 more source

E o palhaço o que é? É uma mulher

open access: yesArteriais - Revista do Programa de Pós-Gradução em Artes, 2019
ResumoEste ensaio traz a fala de uma mulher que descobre em si um palhaço, mesmo atuando, há 13 anos, como palhaça. O encontro com o palhaço Uisquisito ocorreu em 2012, no grupo de teatro Palhaços Trovadores, do qual faço parte há 10 anos. A partir disso, atuar na palhaçaria com gêneros diferentes, feminino e masculino, trouxe-me reflexões não só na ...
openaire   +3 more sources

The Fiscal and Taxation Policy Research on the Fog and Haze Governance in China [PDF]

open access: yes, 2015
雾霾作为一种环境污染,严重影响着人们的生产和生活。目前,我国部分地区雾霾污染严峻,其空气质量令人担忧,政府采取了多种政策手段进行治理,而效果却不是很好。究其原因,我们发现,并不是每种手段都发挥出其应有的作用。本文认为:财税政策是一种较好的调控手段,可以有效治理雾霾污染;通过财税政策干预经济活动,对于治理雾霾、加强环境保护工作,具有较强的指导意义。 本文在对与治理雾霾相关的财税理论进行分析的基础上,详细比较财税、市场、行政管制(命令)及排污权交易等手段。本文认为,对于治理雾霾,政府可以采取多种手段 ...
张晓锋
core  

The Public Perception and Willingness to Pay: from the Perspective of Smog Crisis in China [PDF]

open access: yes, 2016
近年中国境内雾霾天气频现,空气污染程度多次达到WHO(世界卫生组织)认定的危险水平。雾霾严重损害居民身心健康、影响民众日常生活,并导致巨大的经济损失,亦对社会稳定及其长远发展埋下重大隐患。民众对清洁空气的需求不断增加,缓解雾霾危机刻不容缓已是多方共识。当前已有部分文献针对空气污染进行研究,然而多数是针对空气污染的成因、危害,提出的政策建议亦主要基于技术层面,从公众认知角度出发,结合政府公信力等系列因素探究其与雾霾治理的相关性的文献则相对较少。 在此背景下,本文采用价值评估法 ...
袁祥
core  

“Para que tudo permaneça como é, é necessário que tudo mude”: O niilismo de O Leopardo de Lampedusa e o niilismo cristão kierkegaardiano no século das mudanças

open access: yesPensando - Revista de Filosofia, 2016
Não parece haver, ao menos num primeiro olhar, qualquer ponto de convergência entre a literatura de Lampedusa e a filosofia de Kierkegaard. Contudo, com um pouco mais de investigação, tal percepção revela-se falsa. Ambos os autores situam-se no século XIX e, nesse sentido, há forte conexão entre ambos a partir de uma análise histórica, filosófica e ...
openaire   +2 more sources

车顶绝缘子空气动力结构优化及其积污特性研究

open access: yesDianci bileiqi, 2023
为了提高高速列车运行安全稳定性,防止车顶绝缘子在雾霾天气下发生污闪,对污秽颗粒在绝缘子表面的沉积过程进行受力分析,根据受力分析结果对车顶绝缘子进行结构优化,提出两种空气动力结构绝缘子,并对优化结构进行流体力学仿真与风洞积污试验。结果表明:相比于传统结构绝缘子,空气动力结构绝缘子绕流速度大幅度提升,背风面流线有序不存在逆流现象,边界层分离点延后,旋涡运动大幅度减弱,气流分布状况得到了良好改善。空气动力型绝缘子的背风面积污量大幅减小,表面整体积污量小于传统结构绝缘子,积污更容易达到饱和,且污秽分布更加均匀。
陈然   +4 more
doaj  

A Mask for Every Occasion: How the Face Mask Connects Medicine, Fashion, and Politics in Chinese Narratives [PDF]

open access: yes, 2018
The presentation of this research won First Place at the Denman Undergraduate Research Forum in the category "History of People and Art" in 2018.The habit of mask wearing, which is now recognized internationally as a predominantly East Asian (especially ...
Fillmore, Harrison
core  

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