نتایج جستجو برای: causes of pollution

تعداد نتایج: 21182357  

Journal: :The European respiratory journal 2002
N Künzli

Assuming a causal relationship between current levels of air pollution and morbidity/mortality, it is crucial to estimate the public health relevance of the problem. The derivation of air pollution attributable cases faces inherent uncertainties and requires influential assumptions. Based on the results of the trinational impact assessment study of Austria, France, and Switzerland, where pruden...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

2013
Maggie L. Clark Jennifer L. Peel Kalpana Balakrishnan Patrick N. Breysse Steven N. Chillrud Luke P. Naeher Charles E. Rodes Alan F. Vette John M. Balbus

BACKGROUND Nearly 3 billion people worldwide rely on solid fuel combustion to meet basic household energy needs. The resulting exposure to air pollution causes an estimated 4.5% of the global burden of disease. Large variability and a lack of resources for research and development have resulted in highly uncertain exposure estimates. OBJECTIVE We sought to identify research priorities for exp...

2013
Esben Meulengracht Flachs Jan Sørensen Jakob Bønløkke Henrik Brønnum-Hansen

OBJECTIVE To explore how three different assumptions on demographics affect the health impact of Danish emitted air pollution in Denmark from 2005 to 2030, with health impact modeled from 2005 to 2050. METHODS Modeled air pollution from Danish sources was used as exposure in a newly developed health impact assessment model, which models four major diseases and mortality causes in addition to ...

ژورنال: سلامت و محیط زیست 2020

Background and Objective: Urban traffic, while affecting human health, causes physiological and biochemical changes in plants. The aim of this study was to investigate the bioaccumulation potential of Pb and Cd and assess air pollution tolerance index for a number of plants grown high traffic areas of Yazd. Materials and Methods: This cross-sectional, descriptive-analytical study was perfo...

2016
Nilesh Bhosale

Signal Coordination of consecutive intersections were carried out by thumb rule by coupling the indices depend on ratio of traffic volume to distance as well as modelled flow. As eminent resolution data is easily available from intersections, it becomes desire to analyses the actual stream of vehicle flow better to characterize is signal coordination desirable? As increase in vehicular populati...

Journal: :Environmental management 2008
Matthew W Diebel Jeffrey T Maxted Peter J Nowak M Jake Vander Zanden

Agricultural nonpoint source pollution remains a persistent environmental problem, despite the large amount of money that has been spent on its abatement. At local scales, agricultural best management practices (BMPs) have been shown to be effective at reducing nutrient and sediment inputs to surface waters. However, these effects have rarely been found to act in concert to produce measurable, ...

Journal: :Environmental Health Perspectives 2001
K Donaldson V Stone A Seaton W MacNee

Well-documented air pollution episodes throughout recent history have led to deaths among individuals with cardiovascular and respiratory disease. Although the components of air pollution that cause the adverse health effects in these individuals are unknown, a small proportion by mass but a large proportion by number of the ambient air particles are ultrafine, i.e., less than 100 nm in diamete...

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