نتایج جستجو برای: light and noise

تعداد نتایج: 16914688  

Journal: :Journal of Environmental Health Science and Engineering 2015

Journal: :Journal of the Korean Society for Aeronautical & Space Sciences 2013

  Background: Educational centers have higher standards for controlling noise pollution as it has been shown that noise pollution is a major cause of discomfort for teachers and students. Noise pollution reduces concentration, interferes in the conversation, and leads to dropouts and lower grades especially in mathematics. The present study aimed to evaluate noise pollution in the schools ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید