Domestic Radon Safety Measures – Indoor Air Quality Management Law Amendment
* Radon(Rn) : Radon is a chemical element of which element symbol is Rn and element number is 86. Radon is inert radioactive gas without color, taste and smell and heavier than air. In the nature, it is generated by na..
* Green tide: Due to mass increase of floating current in eutrophicated lake or river with slow velocity, the phenomenon of accumulation of the floating current on the water surface causing the color of water to be substantially green. Eutrophication occ..
* The biosensor has characteristics of being used as an indicator of the organic load variation or as an indicator of the air quantity control by measuring the disappearing characteristics of electrons by transferring them to different electron recepto..
* The noise generated from the densely built apartment house is transmitted to the adjacent generation as well as the noise generation households and, as most of the equipment pipes of the apartment house pass through the floor slab an..
Trend of River Purification Business (Removal of Substances Causing Microalgae)
* Recently, there have emerged problems due to water pollution.
- There occur problems such as climate change and abnormal climate such as the increase in heat period, increase of drought, decrease of rainy season, in..