Objective and Background: Among air pollutants, particles are the primary and major pollutant. Research conducted by World Health Organization (WHO) shows that per each 10 micrograms increase in the concentration of particles, the mortality rate rises 1 to 3 times. The purpose of this study has been to determine the concentration of PM2.5 and determinants of it distribution in Tehran’s metro st...

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

Introduction: Nowadays, the cement industry is regarded as one of the most important air pollution industries globally. This study aimed to simulate the emission of NOx, CO, SO2, and PM pollutants caused by the Sabzevar Cement Factory chimney by SCREEN3 software.  Materials and Methods: In this study, the SCREEN3 software was employed for the distribution of NOx, CO, SO2, and PM pollutants. Th...

Background & Aims: Nitrogen dioxide can cause changes in the tissues of kidney, liver, and heart and also may weaken the immune system against infectious diseases. Thus, the present study was conducted with the aim of quantifying and estimating health effects attributed to NO2 pollutant in Urmia city in 2013. Materials & Methods: In this descriptive-analytical study, after validating the hou...