نتایج جستجو برای: particulate matter 25 pm25

تعداد نتایج: 574691  

Journal: :سلامت و محیط زیست 0
اصغر علیزاده داخل a. alizadehdakhel department of chemistry, islamic azad university, rasht branch guilan, iranکارشناس ارشد مهندسی شیمی-عضو هیئت علمی دانشگاه آزاد اسلامی-واحد رشت- گروه شیمی. آریامن قویدل a. ghavidel member of scientific board of environmental research institute of jahad daneshgahi, rasht, gilan, irکارشناس ارشد بهداشت محیط- عضو هیئت علمی پژوهشکده محیط زیست جهاد دانشگاهی محمد پناهنده m. panahandeh member of scientific board of environmental research institute of jahad daneshgahi, rasht, gilan, irکارشناس ارشد بهداشت محیط- عضو هیئت علمی پژوهشکده محیط زیست جهاد دانشگاهی.

backgrounds and objectives: the dispersion of particulate matter has been known as the most serious environmental pollution of cement plants. in the present work, dispersion of the particulate matter from stack of kerman cement plant was investigated using computational fluid dynamics (cfd) modeling.materials and methods: in order to study the dispersion of particulate matter from the stack, a ...

Ershadifar, Hamid, Koochaknejad, Emad, Kor, Kamalodin,

Abstract In the present study, sampling and analysis of size-fractionated suspended particulate matter (SPM) in coastal waters of Chabahar Bay have been done for the first time. Sampling has been conducted on December 25 of 2018 from 5 stations in different locations of the Bay in order to evaluate the effects of natural and human activities on SPM mass and composition. With an overall average...

ژورنال: سلامت و محیط زیست 2016

Background and Objective: The presence of fungal bioaerosols in hospitals indoor environments have affected the health of patients with the defect in immunity system. Therefore, determination of the rate and species of these agents is essential. This study aimed to investigate association between fungi contamination and particulate matter (PM10, PM2.5 and PM1) concentrations in the main indoor ...

Journal: :تحقیقات نظام سلامت 0
کاظم ندافی دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی تهران، تهران، ایران. رامین نبی زاده دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی تهران، تهران، ایران. شاهرخ نظم آرا کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی، تهران، ایران. حشمت اله نورمرادی دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. فاضل محمدی مقدم دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: contemporary development of growing urban communities and increasing the economical and industrial activities in the current century without paying attention to assess the effect of these activities on human health, as the axis of the development, is caused urban air pollution and risks from different pollutant emissions. tehran air pollution has received considerable media coverage...

Journal: :international journal of environmental research 0
e. chianese department of environmental science, university “parthenope” of naples, centro direzionale isola c4, 80143 napoli, italy a. riccio department of applied science, university “parthenope” of naples, centro direzionale isola c4, 80143 napoli, italy i. duro department of chemistry, university “federico ii” of naples, via cintia monte sant’angelo, 80126 napoli, italy m. trifuoggi department of chemistry, university “federico ii” of naples, via cintia monte sant’angelo, 80126 napoli, italy p. iovino department of environmental science, seconda università di napoli, via vivaldi 43, 80100 caserta, italy s. capasso department of environmental science, seconda università di napoli, via vivaldi 43, 80100 caserta, italy g. barone

the state of works of art exhibited inside museums can be strongly influenced by indoor air quality, due to chemical activity of gaseous pollutants and particulate matter. for that reason it is important to carry out periodic air quality controls to check if the concentration levels of air pollutants comply with the limits specified by the national laws. in this work we show results obtained in...

Journal: :iranian journal of public health 0
m kermani k naddafi m shariat as mesbah

since particulate matter (total suspended particles and particulate matter with median aerodynamic diameter less than 10 µm) is one of the important pollutants in the ambient air of tehran, the capital of iran, organic substances, inorganic substances and lead levels in tsp and pm10, correlation between tsp and pm10 concentrations, ratio among the two fractions and relation between tsp and pm10...

2001
W H Roemer J H van Wijnen

n Amsterdam, the Netherlands, we measured airborne particulate matter (PM) during winter 1998-1999, taking daily average measurements at an urban background site, at a busy street, and at a motorway. Comparison of black smoke, PM(10), and PM(1.0) levels showed that daily averages were highly correlated over time. Median daily concentrations were elevated at sites affected by traffic. The highes...

Journal: :The New England journal of medicine 2007
Morton Lippmann

ژورنال: ابن سینا 2019

Background: Exposure to particulate air pollutants is one of the major problems and crises in Tehran metropolis, Iran. Various studies have shown the effect of particulate matter of air contaminants as an increase in cardiovascular and oxidative stress. So, the purpose of this study was to examine the relationship of <2.5 micrometers and <10 micrometers microns particulate matter (PM2.5 and PM1...

Journal: :international journal of environmental research 2015
m. piccinini a. sanchez caro m. l. gultemiriam a. giorgi

a 3-km reach of the luján river was studied by establishing 6 sampling stations, which were from 300 to 500 m apart. the first station was the control reading for river nutrients and particulate material. the second station measured the continuous effluent from a wastewater treatment plant flow of the city of luján and was, therefore, considered a continuous addition point of nutrients. the oth...

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