background: noise pollution is currently a major health risk factor for workers in industries. the aim of this study was to investigate noise pollution and implement a control intervention plan for blast furnace in a steel industry. methods: the measurement of sound pressure level (spl) along with frequency analysis was done with the sound-level-meter cell-450 . personal noise exposure was perf...

The classical electrostatic image principle for a perfectly conducting object consisting of two orthogonally intersecting spheres is revisited through vector analysis. A method for finding the image of a given charge distribution by splitting it in three virtual singlesphere problems is described. Also, a simple relation between the image charges of a given point charge is found. The method is ...

BACKGROUND Twenty-two million workers are exposed to hazardous noise in the United States. The purpose of this study is to estimate the prevalence of hearing loss among U.S. industries. METHODS We examined 2000-2008 audiograms for male and female workers ages 18-65, who had higher occupational noise exposures than the general population. Prevalence and adjusted prevalence ratios (PRs) for hea...

Background Manufacturing sector accounts for 18.1% of the total employed persons in Malaysia, which is known for the utilisation of noisy machinery to establish output. Even though it is compulsory for employers to notify any hearing loss cases to the authority annually, there is still scarcity of occupational hearing loss cases. Therefore, this study aimed to estimate the total number of worke...

Industrial noise induced hearing loss is an increasingly prevalent disorder that is the result of exposure to high intensity sounds, especially over a long period of time. .Noises of industry can cause partial deafness, interference with communication by speech and annoy. These undesirable effects are best avoided by reducing the noise to acceptable levels. Several investigations on industrial ...

Background: Simultaneous exposure to noise and organic solvents such as styrene is an indispensable part of today’s industries. Numerous studies were done related to ototoxic effects of co-exposure to noise and styrene while some evidences showed the adverse effects of such exposure on other organs. In this study, we aimed to assess the subacute effects of combined exposure to noise and s...

conclusions according to the factory noise map, except for the control rooms with 81 dba noise, other cases of measuring stations were higher than the standard exposure of 85 dba noise. as a result, the implementation of control strategies, such as inspection and performance of control systems and insulation of the control room to prevent unnecessary exposure noise, are necessary. background st...

Malaysia has become part of the world’s manufacturer among Asian country. This has put manufacturing industry as a major sector in the foreign direct investment (FDI) in this country. However, this recognition has created occupational safety and health (OSH) issues among the workers while they are at work. These emerging OSH issues impacted additional noise sources, use of hazardous material, i...