نتایج جستجو برای: pollutant levels

تعداد نتایج: 935156  

Journal: :Applied sciences 2021

Assamra wastewater treatment plant (WWTP) is the largest facility in Jordan. Treated discharged into Zarqa River (ZR) and used to irrigate fodder vegetables. ZR also includes surface runoff, stormwater, raw illegally river. This study examined pharmaceutically active compounds (PhAC) water resources basin. Samples of WWTP influent effluent river from four sites along were collected. Concentrati...

2011
Krishnan Bhaskaran Shakoor Hajat Ben Armstrong Andy Haines Emily Herrett Paul Wilkinson Liam Smeeth

OBJECTIVES To investigate associations between air pollution levels and myocardial infarction (MI) on short timescales, with data at an hourly temporal resolution. DESIGN Time stratified case crossover study linking clinical data from the Myocardial Ischaemia National Audit Project (MINAP) with PM(10), ozone, CO, NO(2), and SO(2) data from the UK National Air Quality Archive. Pollution effect...

Journal: :The Science of the total environment 2010
Dai-Hua Tsai Jia-Lin Wang Kai-Jen Chuang Chang-Chuan Chan

In this study, the relationship between cardiovascular mortality and traffic-related air pollutants (NO(2), CO, PM(10), and six volatile organic compounds (VOCs), propane, iso-butane, propylene, benzene, meta-, para-, and ortho-xylenes) was investigated. The concentrations of NO(2), PM(10) and CO from 1993 to 2006 were measured at a fixed-site air monitoring station, and VOC data from 2003 to 2...

Journal: :Biomedical and environmental sciences : BES 2006
Wen-Jie Zhang Ye-Le Sun Guo-Shun Zhuang Dong-Qun Xu

OBJECTIVE To investigate the seasonal characteristics and the sources of elements and ions with different sizes in the aerosols in Beijing. METHODS Samples of particulate matters (PM2.5), PM10, and total suspended particle (TSP) aerosols were collected simultaneously in Beijing from July 2001 to April 2003. The aerosol was chemically characterized by measuring 23 elements and 18 water-soluble...

2011
Lyndsey A. Darrow Mitchel Klein Matthew J. Strickland James A. Mulholland Paige E. Tolbert

BACKGROUND An emerging body of evidence suggests that ambient levels of air pollution during pregnancy are associated with fetal growth. OBJECTIVES We examined relationships between birth weight and temporal variation in ambient levels of carbon monoxide, nitrogen dioxide (NO₂), sulfur dioxide (SO₂), ozone, particulate matter ≤ 10 μm in diameter (PM₁₀), ≤ 2.5 μm (PM(2.5)), 2.5 to 10 µm (PM(2....

Journal: :Int. J. Systems Science 2011
Bowen Lu John Oluwagbemiga Oyekan Dongbing Gu Huosheng Hu Hossein Farid Ghassem Nia

This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, redistribution , reselling , loan, sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date...

2015
Chih-Cheng Chen Shang-Shyue Tsai Chun-Yuh Yang Paul B. Tchounwou

This study was undertaken to determine whether there was an association between fine particle (PM₂.₅) levels and daily clinic visits for migraine in Taipei, Taiwan. Daily clinic visits for migraine and ambient air pollution data for Taipei were obtained for the period from 2006-2011. The odds ratio of clinic visits was estimated using a case-crossover approach, controlling for weather variables...

2003
A. DONINI

I briefly review the source of the so-called intrinsic ambiguity and show how the combination of “golden” and “silver” channel at the Neutrino Factory can solve the problem, in the absence of other sources of degeneracies. I then relaxed the hypothesis θ23 = 45◦ and show how the different dependence of the two channels on θ23 can help in solving the intrinsic and θ23-octant ambiguity at the sam...

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