نتایج جستجو برای: air pollution

تعداد نتایج: 250473  

Journal: :محیط شناسی 0
غلامحسین کیانی استادیار گروه اقتصاد، دانشکدۀ علوم اداری و اقتصاد، دانشگاه اصفهان فاطمه یاری دانشجوی کارشناسی ارشد علوم اقتصادی، دانشکدۀ علوم اداری و اقتصاد، دانشگاه اصفهان هادی امیری استادیار گروه اقتصاد، دانشکدۀ علوم اداری و اقتصاد، دانشگاه اصفهان

introduction air pollution is one of the critical challenges in metropolitans around the world. according to world health organization (who), three millions people die from air pollution annually. in some studies mortality costs by air pollution was estimated. social cost of air pollution was estimated 28990 billions rials in tehran city. the mortality cost by air pollution was estimated about ...

2009
Brendon Barnes Angela Mathee Elizabeth Thomas Nigel Bruce

Indoor air pollution due to the indoor burning of polluting fuels has been associated with Acute Lower Respiratory Infections (ALRI) amongst children less than five years old. This paper reviews evidence of the association between household energy, indoor air pollution and child ALRI in South Africa. Studies show evidence consistent with the international literature with the likelihood of ALRI ...

2015
Jong Han Leem Soon Tae Kim Hwan Cheol Kim

OBJECTIVES Air pollution contributes to mortality and morbidity. We estimated the impact of outdoor air pollution on public health in Seoul metropolitan area, Korea. Attributable cases of morbidity and mortality were estimated. METHODS Epidemiology-based exposure-response functions for a 10 μg/m3 increase in particulate matter (PM2.5 and PM10) were used to quantify the effects of air pollutio...

2016
Sangita Vyas Nikhil Srivastav Dean Spears

Particulate pollution has important consequences for human health, and is an issue of global concern. Outdoor air pollution has become a cause for alarm in India in particular because recent data suggest that ambient pollution levels in Indian cities are some of the highest in the world. We study the number of particles between 0.5μm and 2.5μm indoors while using affordable air purifiers in the...

2017
Dongsheng Zhan Mei-Po Kwan Wenzhong Zhang Shaojian Wang Jianhui Yu

In recent years, severe and persistent air pollution episodes in China have drawn wide public concern. Based on ground monitoring air quality data collected in 2015 in Chinese cities above the prefectural level, this study identifies the spatiotemporal variations of air pollution and its associated driving factors in China using descriptive statistics and geographical detector methods. The resu...

Journal: :Environmental Health 2008
Fredrik Niclas Piro Christian Madsen Øyvind Næss Per Nafstad Bjørgulf Claussen

OBJECTIVE To explore various contributors to people's reporting of self reported air pollution problems in area of living, including GIS-modeled air pollution, and to investigate whether those with respiratory or other chronic diseases tend to over-report air pollution problems, compared to healthy people. METHODS Cross-sectional data from the Oslo Health Study (2000-2001) were linked with GI...

2010
Lejla Muhamedagić Belma Muhamedagić

An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets, or gases. In addition, they may be natural or man-made. Pollutants can be classified as either primary or secondary. Air pollution, both indoors and outdoors, is a major environmental health problem affecting everyone in develo...

Journal: :international journal of epidemiology research 0
mokhtar soheilyzad health education dept., hamadan university of medical sciences, hamadan, i.r. iran salman khazaei epidemiology dept., hamadan university of medical sciences, hamadan, i.r. iran rizan rezaeian social determinants of health research center , kurdistan university of medical sciences, sanandaj, i.r. iran mahmood hajipour student research committee, epidemiology dept., shahid beheshti university of medical sciences, tehran, i.r. iran shahab rezaeian social determinants of health research center , kurdistan university of medical sciences, sanandaj, i.r. iran

background and aims: air pollution is one of the health problems worldwide. previous epidemiological studies have investigated the impacts of air pollution on respiratory and cardiovascular diseases. the aim of this study was to determine the associations between air pollution levels and different health indicators among world countries. methods: this ecological study was performed in 2013 by u...

2006
David J. Nowak Daniel E. Crane Jack C. Stevens

A modeling study using hourly meteorological and pollution concentration data from across the coterminous United States demonstrates that urban trees remove large amounts of air pollution that consequently improve urban air quality. Pollution removal (O3, PM10, NO2, SO2, CO) varied among cities with total annual air pollution removal by US urban trees estimated at 711,000 metric tons ($3.8 bill...

Journal: :ارتقای ایمنی و پیشگیری از مصدومیتها 0
سعید متصدی زرندی s motesaddi zarandi دانشگاه علوم پزشکی شهید بهشتیسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) محمد رضا مسعودی نژآد mr massoudinejad دانشگاه علوم پزشکی شهید بهشتیسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) اشرف مظاهری تهرانی a mazaheri tehrani دانشگاه علوم پزشکی کاشان حامد پوری h pouri دانشگاه صنعتی شریف

backgrounds and aims: ammonia removal from air to prevent severe damage to the environment and living organisms is very important. biofiltration is an efficient, easy, cost-effective, and environmentally friendly process for degradation of ammonia from waste air. the aim of this study is to investigate the efficiency of biological filtration using a compost and scallop bed for ammonia removal. ...

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