نتایج جستجو برای: and air pollutants co

تعداد نتایج: 16917307  

Journal: :Environmental science & technology 2003
Tracey Holloway Arlene Fiore Meredith Galanter Hastings

We examine the emergence of InterContinental Transport (ICT) of air pollution on the agendas of the air quality and climate communities and consider the potential for a new treaty on hemispheric air pollution. ICT is the flow of air pollutants from a source continent (e.g., North America) to a receptor continent (e.g., Europe). ICT of air pollutants occurs through two mechanisms: (i) episodic a...

Journal: :Arhiv za higijenu rada i toksikologiju 2000
H G Mücke

An important aim of air quality assessment is to provide information about population exposure and health impact assessment. Numerous epidemiological studies have already shown that exposure to excessive levels of ambient air pollutants are associated with either acute or chronic health effects. Until recently, the adequacy of monitoring population exposure in relation to quantitative assessmen...

2013
Sudhir Nigam Rashmi Nigam Sangeeta Kapoor

Air pollution has emerged as a serious problem affecting health and environment. Out of many pollutants Carbon Monoxide (CO) gas is considered as a silent and lethal killer. In large urban areas such as Delhi, the CO emissions from the Transport sector pose unprecedented risks to the commuters and inhabitants. In order to eradicate the adverse impact of CO pollution, there exists a need for an ...

2003
Y-L. Lee C-K. Shaw J-S. Lai Y-C. Ko S-L. Huang F-C. Sung Y. L. Guo

Climate, trafŽ c-related air pollutants and allergic rhinitis prevalence in middle-school children in Taiwan. Y-L. Lee, C-K. Shaw, H-J. Su, J-S. Lai, Y-C. Ko, S-L. Huang, F-C. Sung, Y.L. Guo. #ERS Journals Ltd 2003. ABSTRACT: The prevalence of allergic rhinitis, a common respiratory disorder, may be rapidly increasing. Epidemiological studies, however, indicate little about its association with...

Journal: :British journal of sports medicine 2001
A J Carlisle N C Sharp

OBJECTIVES To establish by literature survey: (a) levels at which air pollutants are considered damaging to human health and to exercisers in particular; (b) the current ambient levels experienced in the United Kingdom; (c) whether athletes are especially at risk. METHODS Six major urban air pollutants were examined: carbon monoxide (CO); nitrogen oxides (NO(X)); ozone (O(3)); particulate mat...

Introduction and purpose: Long term exposure to air pollutants can result in the development and acceleration of various conditions, such as cardiac and respiratory problems, reduced lung function, chronic bronchitis, asthma, pulmonary cancer, and even death. Regarding this, the aim of the present study was to perform a spatial analysis of air pollution and mortality in Isfahan,...

2013
Kyra Naumoff Shields Jennifer M Cavallari Megan J Olson Hunt Mariana Lazo Mario Molina Luisa Molina Fernando Holguin

BACKGROUND While air pollution exposures have been linked to cardiovascular outcomes, the contribution from acute gas and particle traffic-related pollutants remains unclear. Using a panel study design with repeated measures, we examined associations between personal exposures to traffic-related air pollutants in Mexico City and changes in heart rate variability (HRV) in a population of researc...

Journal: :Mathematical and Computer Modelling 2011
A. Suárez Sánchez P. J. García Nieto P. Riesgo Fernández J. J. del Coz Díaz Francisco Javier Iglesias-Rodríguez

The objective of this study is to build a regression model of air quality by using the support vector machine (SVM) technique in the Avilés urban area (Spain) at local scale. Hazardous air pollutants or toxic air contaminants refer to any substance that may cause or contribute to an increase in mortality or serious illness, or that may pose a present or potential hazard to human health. To acco...

ثقفی, محمدعلی, علی اکبری بیدختی, عباسعلی,

Nowadays air pollution in large cities such as Tehran have dramatic effects on public health, hence study of the way air pollutions varies with meteorological parameters appears to be important. One important aspect of sustainability of large cities such as Tehran, is controlling the emissions of pollutants as the meteorological (climatic) conditions are becoming more acute in terms of air poll...

Journal: :The Science of the total environment 2013
Susanne Steinle Stefan Reis Clive Eric Sabel

Quantifying human exposure to air pollutants is a challenging task. Ambient concentrations of air pollutants at potentially harmful levels are ubiquitous in urban areas and subject to high spatial and temporal variability. At the same time, every individual has unique activity-patterns. Exposure results from multifaceted relationships and interactions between environmental and human systems, ad...

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