نتایج جستجو برای: pollution sources

تعداد نتایج: 351626  

2016
Magdalena Reizer Katarzyna Juda-Rezler

The main goal of this paper is to identify the drivers responsible for the high particulate matter concentrations observed in recent years in several urban areas in Poland. The problem was investigated using air quality and meteorological data from routine monitoring network, air mass back trajectories and multivariate statistical modelling. Air pollution in central and southern part of the cou...

Journal: :محیط زیست طبیعی 0
یوسفعلی احمدی ممقانی دانش آموخته کارشناسی ارشد شرکت مهندسان مشاور آب و عمران فرازاندیش، ایران نعمت ا... خراسانی استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران غلامرضا رفیعی استادیار دانشکده منابع طبیعی، دانشگاه تهران، ایران

rivers are one of the most valuable aquatic ecosystems that their physiochemical properties and the biology of their organisms have strong interactions. one of the major rivers in iran, which covers a variety of ecosystems, is called tajan river. in this research, the effect of different pollution sources on water quality of this water body was investigated. samples were collected in seven diff...

Roudbari, Alireza , Saeedi, Milad ,

Background and objectives: Tehran is one of the most polluted cities in the world in terms of air pollution. Modeling is a useful tool in air pollution management. The objectives of this study are to determine the distribution of the main air pollutants concentration in Tehran and to construct a photochemical model appropriate to the geography and natural characteristics of Tehran.   Methods: I...

2014
Nancy de Castro Stoppe Juliana Saragiotto Silva Tatiana Teixeira Torres Camila Carlos Elayse Maria Hachich Maria Inês Zanoli Sato Antonio Mauro Saraiva Laura Maria Mariscal Ottoboni

Different types of water bodies, including lakes, streams, and coastal marine waters, are often susceptible to fecal contamination from a range of point and nonpoint sources, and have been evaluated using fecal indicator microorganisms. The most commonly used fecal indicator is Escherichia coli, but traditional cultivation methods do not allow discrimination of the source of pollution. The use ...

2013
John K. Stranlund Carlos A. Chávez

All environmental policies involve costs of implementation and management that are distinct from pollution sources’ abatement costs. In practice, regulators and sources usually share these administrative costs. We examine theoretically an optimal policy consisting of an emissions tax and the distribution of administrative costs between the government and regulated sources of pollution. Our focu...

2012
M. R. Cave J. Wragg E. L. Ander

Potentially harmful elements (PHE) occur both naturally from geogenic sources and from anthropogenic derived pollution. Anthropogenic sources can be further categorised into those derived from point sources. A point source is a single identifiable source which is confined to a very small area such as that arising from disposal of waste material or from an industrial plant. Diffuse pollution ari...

2010
Jane E. Clougherty

Epidemiologic studies of air pollution effects on respiratory health report significant modification by sex, although results are not uniform. Importantly, it remains unclear whether modifications are attributable to socially derived gendered exposures, to sex-linked physiological differences, or to some interplay thereof. Gender analysis, which aims to disaggregate social from biological diffe...

2012
Mohammad Valipour Seyyed Morteza Mousavi Reza Valipour Ehsan Rezaei

Nowadays study of the industrial pollutions has become a controversial issue to reduce the risks of them in all of the world. Studding of air, water, and soil pollutions as separately may cause neglect from address to a comprehensive look in industrial pollution issue. In addition, without the exact information about quantity and quality of pollution sources, reduce or eliminate industrial poll...

2017
Nathan Cooper Donna Green Katrin J. Meissner

Publically accessible pollution databases, such as the Australian National Pollutant Inventory, contain information on chemical emissions released by industrial facility and diffuse sources. They are meant to enable public scrutiny of industrial activity, which in turn, is meant to lead to industries reducing their pollution. In Australia, however, concerns have been consistently raised that th...

Journal: :Japan journal of water pollution research 1989

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