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Nitrogen compunds in the surface water identifying concentrations and sources
(10th International Conference “Environmental Engineering” (ICEE-2017), 2017)
The main objective of the surface water monitoring – periodically to conduct water quality testing, to find out the possible sources of pollution in time and to warn population. Water samples for analysis of surface water ...
Theoretical end experimental evaluation of perforations effect on sound insulation
(10th International Conference “Environmental Engineering” (ICEE-2017), 2017)
To design a sound-absorbing panel, it is important to identify factors that affect the maximum sound absorption of low, middle and high frequency sounds. Perforation effect is very important for the noise-reducing and ...