检索结果-南通市图书馆

Global Alliance against Chronic Respiratory Diseases demonstration project:aerosol pollution and its seasonal peculiarities in primary schools of Vilnius

引用

Chinese Medical Journal 2020年第13期133卷 1516-1525页

作者： Nina Prokopciuk Ulrich Franck Vadimas Dudoitis Nikolaj Tarasiuk Izabele Juskiene Daiva Cepuraite Kestutis Staras Algirdas valiulis Vidmantas Ulevicius arunas valiulis department of Environmental Research SRI Center for Physical Sciences and TechnologyVilniusLT-02300Lithuania Department of Public Health Institute of Health Sciencesand Department of Children's DiseasesInstitute of Clinical MedicineVilnius University Faculty of MedicineVilniusLT-03101Lithuania Department of Environmental Immunology Helmholtz Centre for Environmental Research-UFZLeipzigGE-04318Germany Department of Public Administration Mykolas Romeris UniversityVilnius Centro Outpatient ClinicVilniusLT-01117Lithuania Department of Public Health Vilnius University Faculty of MedicineVilnius Centro Outpatient ClinicVilniusLT-01117Lithuania Department of Rehabilitation Physical and Sports MedicineVilnius University Medical FacultyInstitute of Health SciencesVilniusLT-03101Lithuania

Background:The growing public health concern caused by non-communicable diseases in urban surroundings cannot be solved by health care alone;therefore a multidisciplinary approach is *** study aimed to evaluate the airborne aerosol pollution level in primary schools as possible factor influencing origin and course of the diseases in ***:Seasonal aerosol particle number concentration(PNC)and mass concentration(PMC)were studied in the randomly selected eleven primary schools in the Lithuanian capital,Vilnius,as model of a middle-size Eastern European *** PNC in the size range from 0.01 to>1.0μm in diameter was measured using a condensation particle *** an optical particle sizer,PNC was measured and PMC estimated for particles from 0.3 to 10.0μm.A descriptive statistics was used to estimate the aerosol pollution ***:During all seasons,local cafeterias in the absence of ventilation were the main sources of the elevated levels of indoor PMC and PNC(up to 97,500 particles/cm3).The other sources of airborne particulates were the children’s activity during the lesson breaks with PMC up to 586μg/*** furniture,carpets in the classrooms and corridors were responsible for PMC up to 200μg/*** aerosol pollution(up to 18,170 particles/cm3)was higher for schools in city *** air pollution in classrooms also resulted from intermittent sources,such as construction work during classes(200-1000μg/m3)and petrol-powered lawn trimmers(up to 66,400 particles/cm3).Conclusion:The results of our survey show that even in a relatively low polluted region of Eastern Europe there are big differences in aerosol pollution within middle-sized *** efforts are needed to improve air quality in schools:more frequent wet cleaning,monitoring the operation of ventilation systems,a ban on construction works during school year,on a use of sandblasting mechanisms in the neighborhood of schools.

关键词： Children Indoor aerosol Pollution levels Primary school Systematic and occasional sources Ventilation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of ZnO/graphene nanolaminate periodicity on their structural and mechanical properties

引用

Journal of Materials Science & Technology 2018年第9期34卷 1487-1493页

作者： Igor Iatsunskyi Margarita Baitimirova Emerson Coy Luis Yate Roman Viter arunas Ramanavicius Stefan Jurga Mikhael Bechelany Donats Erts NanoBioMedical Centre. Adam Mickiewicz University 85 Urnultowska str. 61-614. Poznan Poland Institute of Chemical Physics and Institute of Atomic Physics and Spectroscopy University of Latvia 19 Raina Boulevard LV 1586 Riga Latvia Surface Analysis and Fabrication Platform CIC biomaGUNE Paseo Miramoin 182 20009 Donostia-San Sebastian Spain Department of Physical Chemistry Institute of Chemistry Faculty of Chemistry and Geosciences Vilnius UniversityNaugarduko str. 24 LT-03225 VilniusLithuania Institut Européen des Membranes IEM - UMR 5635 ENSCM CNRS Univ Montpellier Montpellier France

Structural, electronic and mechanical properties of ZnO/Graphene（ZnO/G） nanolaminates fabricated by low temperature atomic layer deposition（ALD） and chemical vapor deposition（CVD） were *** performed scanning and transmission electron microscopy（SEM/TEM）, X-ray diffraction（XRD）, electron energy loss spectroscopy（EELS）, Raman spectroscopy, X-Ray photoelectron spectroscopy（XPS） and nanoindentation to characterize the ZnO/G nanolaminates. The main structural and mechanical parameters of ZnO/G nanolaminates were calculated. The obtained results were analyzed and interpreted taking into account mechanical interaction and charge effects occurring at the G-ZnO interface. The influence of graphene sublayers number on the mechanical behavior of the ZnO/G nanolaminates was studied. By reducing the bilayer thickness, the mechanical parameters of the films can be tuned（Young＇s modulus100-200 GPa, hardness 3-9 GPa）. The softer response of the multilayers as compared to the single layers of ZnO and graphene was attributed to the structural changes in the ZnO layer and the interfaces. This study shows the mechanical behavior of ZnO/G nanolaminates and their influence on the development of novel electro-optical devices based on these structures.

关键词： Nanolaminate Graphene ZnO XPS Nanointendation Multilayers Atomic layer deposition Chemical vapor deposition

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：