حمیدی, منصوره

[ 1 ] - بررسی آلودگی صوتی در راه آهن شهری و حومه تهران درسال1389

  Background and aims: Noise pollution is one of the risk factors of the human environment that may seriously threat physical and mental health of human beings. One of the main sources of this type of pollution is the noise produced by urban transportation and traffic, particularly subway in the environment. This article aims at study and evaluation of the noise condition in drivers’ cabin and ...

[ 2 ] - Feasibility study of silica aerogel nanocomposites application to enhance acoustic properties

Background and Objective: Noise pollution is one of the serious environmental issue. Sound control technologies based on sound absorption and sound insulation are considered as the two widely used methods. Therefore, the aim of this study was to modify silica aerogel nanocomposites to improve its acoustic properties. Materials and Methods:  This applied experimental research involved in examin...