نتایج جستجو برای: pollutant levels
تعداد نتایج: 935156 فیلتر نتایج به سال:
Quantification of Pollutant Levels in Water, Sediment and Winkles in Akani Obio Uruan River, Nigeria
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...
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...
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...
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...
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....
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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...
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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