نتایج جستجو برای: pollution source

تعداد نتایج: 481458  

2002
P. Kathirgamanathan R. McKibbin

The goal is to develop an inverse model capable of simultaneously estimating the parameters appearing in an air pollution model for an instantaneous point source, by using measured gas concentration data. The approach taken was to develop the inverse model as a non-linear least squares estimation problem in which the source term is estimated using measurements of pollution concentration on the ...

1998
Béatrice Rey

This paper analyzes effects of nonpoint source pollution on regulation optimal contracts in asymmetric information situation. We consider a continuum of agents (to formalize major characteristic of nonpoint source pollution) which pollute another agent (affected agent). We distinguish different forms of externalities and examine if it is always necessary to modify optimal contract of each respo...

2015
Željko Kwokal Stanislav Frančišković-Bilinski Halka Bilinski

Concentrations of gaseous mercury (2.1 9.6 μg m−3) were measured within the former chlor-alkali plant in Kaštela Bay. This is a hazardous source of pollution and could present a serious problem for the town of Split and Jadro River. The aim of the work was to find the direction in which Hg-pollution was distributed. Soil samples were collected and total Hg concentrations were measured in soils ...

Journal: :محیط شناسی 0
علی جعفری دانشجوی دکتری برنامه ریزی محیط زیست، دانشکدة محیط زیست، دانشگاه تهران مسعود طاهریون دانشجوی دکتری مهندسی محیط زیست، دانشکدة محیط زیست، دانشگاه تهران احمدرضا یاوری دانشیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران اکبر باغوند دانشیار گروه برنامه ریزی و مدیریت محیط زیست، دانشکدة محیط زیست، دانشگاه تهران

water quality trading is a new approach in pollution control which satisfies water quality standards suggesting minimum cost solutions. this method uses tradable discharge permits based on pollution transfer coefficient in a river. this paper tries to establish a water quality trading program in a river basin according to transfer coefficients between pollution sources and evaluate cost effecti...

Background & Aims of the Study: In this research, Long-Term Hydrologic Impact Assessment model is selected for simulation of runoff and NPS pollution. The aim of this study is modeling of non-point source pollution by L-THIA model in Zayandehrood watershed in 2015. Materials & Methods: In this study, analytical survey and investigation of references in the context of libr...

Journal: :archives of hygiene sciences 0
mojgan mirzaei department of environmental sciences, malayer university, malayer, hamedan, iran. eisa solgi department of environmental sciences, malayer university, malayer, hamedan, iran. abdolrassoul salman mahiny gorgan university of agriculture sciences and natural resources, environmental sciences, college of fisheries and environmental sciences. gorgan, iran.

background & aims of the study: in this research, long-term hydrologic impact assessment model is selected for simulation of runoff and nps pollution. the aim of this study is modeling of non-point source pollution by l-thia model in zayandehrood watershed in 2015. materials & methods: in this study, analytical survey and investigation of references in the context of library studies has been us...

میرکریمی, سید حامد, پسندیده فرد, زهرا, اکبری, مرتضی , سلمان ماهینی, عبدالرسول , غلامعلی فرد, مهدی ,

The most important pollutants that cause water pollution are nitrogen and phosphorus from agricultural runoff called Non-Point Source Pollution (NPS). To solve this problem, management practices known as BMPs or Best Management Practices are applied. One of the common methods for Non-Point Source Pollution prediction is modeling. By modeling, efficiency of many practices can be tested before ap...

Journal: :Journal of the Air Pollution Control Association 1975

Journal: :Environmental Health Perspectives 2011

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