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...

currently all the waste produced are collected and transferred to the only landfill of tehran,aradkooh (kahrizak), that is located in the south of tehran. this landfill has been in use for over 45 years that has received over 35 million tons of waste during its life. in the present investigation 40 soil samples were collected from aradkooh landfill to know about the origin of metals. the sample...

Introduction: Among the environmental pollutions, noise is very important for its physiological  and psychological effects on human. Traffic noise is one of the most important pollutants and the  hospitals  are  one  of  the  critical  places  regarding  this  type  of  noise.  For  these  reasons,  in  the  summer  of  1382,  the  traffic  noise  of  Mashhad  main  streets  around  the  hospit...

the cities are home to half of the people who live on the planet earth. they stimulate economic growth and cultural prosperity, but they are also the center of pollution and poverty. therefore, the livability of cities, in particular urban distressed areas, has always been one of the issues and challenges facing thinkers in different fields of urban management. however, the planning to improve ...

the purpose of the present study was to provide empirical support for the construct of the involvement load hypothesis (ilh ) in an efl context. to fulfill the purpose of the study, 4 intact groups consisting of 126 intermediate-level students participated in this experiment. in order to ensure that the participants were at the same level of english language proficiency, the nelson test was adm...

The present study was conducted to assess the risk to human health by microbial load and heavy metals (Cr, Cu, Ni, Zn, Cd and Pb) through the intake of locally grown vegetables irrigated by metal contaminated water and waste water in Delhi and NCR region. Twenty-two varieties of vegetables grown in the agricultural land were collected for analysis. The results revealed that concentrations of co...

While more attention has been paid in recent years to urban point source pollution control through the establishment of wastewater treatment plants in many developing countries, no considerable planning nor any serious measures have been taken to control urban non-point source pollution (urban stormwater runoff). The present study is a screening analysis to investigate the pollution loads in ur...

Selected heavy metals (Cr, Cu, Ni, Pb and Zn) in surface sediments from the coastal Shandong Peninsula (Yellow Sea) have been determined to evaluate the spatial distribution and potential ecological risk. Results showed that heavy metal concentrations in the sediments generally met the criteria of China Marine Sediment Quality. However, both the enrichment factor (EF) and geoaccumulation index ...

Cr, Co, Cu, Zn, Cd and Pb in the bottom sediments from 93 sites at Quiberon bay were analyzed by Inductively Coupled Plasma Mass Spectrometry (ICPMS) after acid extraction. The ranges of the concentration in the sediments are as follows: 27.3 μg/g (Cr), 11.6 μg/g (Co), 13.8 μg/g (Cu), 42.0 μg/g (Zn), 0.08 μg/g (Cd) and 17.8 μg/g (Pb). Potential contamination of the bay was assessed by Igeo and ...

Several thousands of people, including children, suffer from acute respiratory disease (ARD) every year worldwide. Pro-active planning and mitigation for these diseases require identification of the major drivers in a location-specific manner. While the importance of air pollutants in ARD has been extensively studied and emphasized, the role of weather variables has been less explored. With Del...