الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
One of the dominant sources of air pollution affecting environmental
living quality in urban areas is road traffic-induced air pollution. Providing
information about traffic air pollution and finding out its distribution is
therefore a crucial starting point for planning effective measures to improve
air quality. Such information helps decision makers to optimize e.g. urban
design.
In the present work, a line source model, developed in laboratory of
environmental physics, faculty of science at Qena, Egypt is proposed to
describe the downwind dispersion of pollutants near roadways, at different
cities in Egypt. The model is adopted completely Graphical User Interface
(GUI) technique for operating in various windows-based microcomputers.
The software interface and code have been designed by Microsoft Visual
basic 6.0 based on the Gaussian diffusion equation. This software is
developed to predict concentrations of gaseous pollutants (eg. CO, SO2, NO2
and particulates) at a user specified receptor.
This thesis contains four chapters, summarized as follows:
Chapter one gives a general introduction for air pollutant dispersion
models and its applications. Also, necessity and the aim of this study have
been presented. In this regard the main aim of this work is restricted to study
air pollutant dispersion in urban environment released from a line source with
the aid Gaussian model using computer simulation. In this consideration the
following have been carried out:
1. Developing a predictive model using computer program designed
by the authors using Microsoft Visual basic 6.0 to predict