Browsing Ruhuna International Science and Technology Conference by Subject "LAeq"

Browsing Ruhuna International Science and Technology Conference by Subject "LAeq"

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  • Hearing threshold shift of workers in metal quarries and crushers due to high occupational noise exposure 
    Sethunga, S.M.N.; Abeysuriya, U.; Bodhika, J.A.P.; Dharmaratne, W.G.D.; Wickramasinghe, S.A. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2018-02-15)
    Occupational noise causes both auditory and non-auditory health effects. This study is focused on the variation of hearing threshold level of a sample of workers as Metal Crushers (MC) and Metal Quarries (MQ) at eleven ...
  • Noise level exposure in school classrooms 
    Sethunga, S. M. N.; Bodhika, J. A. P.; Dharmaratna, W. G. D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2016-01-28)
    Noise exposure inside classrooms may affect several ways to school children and teachers. According to the literature, high noise levels in classrooms minimize a wide range of attainments and performances in the areas ...
  • Noise pollution in Matara city 
    Sethunga, S.M.N.; Tharuka, N.H.R; Bodhika, J.A.P.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2017-01-26)
    Noise pollution is one of the major environmental problems in many urban cities in Asian Countries. In Sri Lanka as well, the number of vehicles registered per year has reached 6.33 million by the end of Feb 2016. Present ...
  • Study on noise exposure of train passengers in Sri Lanka 
    Sethunga, S.M.N.; Bodhika, J.A.P.; Dharmaratne, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2017-01-26)
    According to the statistics published, there are more than 300,000 train passengers per day and 90% of them are daily travelers. All of them are exposing to noise generated by running locomotives. The noise level would ...
  • Traffic noise contour mapping in Tangalle city - Sri Lanka 
    Sethunga, S.M.N.; Bodhika, J.A.P.; Dharmaratna, W.G.D. (Faculty of Science, University of Ruhuna, Matara, Sri Lanka, 2015-01-22)
    Noise pollution is one of the major environmental problems in many cities in Sri Lanka and therefore, systematic studies in city noise pollution are essential to control the situation. Noise from different sources or ...

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