International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Bees are highly sensitive to noise pollution and in some cases, noise can impact their behaviour. Towards the goal to create optimal living conditions for the bees, we aim to understand how the material of the beehive impacts the microclimate of the beehive. The present paper aims to examine and compare the noise levels inside beehives of the same construction but made out of different materials. Three 10-frame Dadan-Blatt beehives were used in the experiment – a ceramic beehive made out of high-cavity ceramic tiles of marl clay; a ceramic beehive made out of high-cavity ceramic tiles with increased kaolin content and a wooden beehive (pine). The noise was measured in an urbanized area and inside the beehives. The results show that the best performance in terms of noise insulation is the ceramic beehive with increased kaolin content.

Studies have shown that noise pollution is a very harmful form of pollution for human health and also for labor efficiency. The noise pollution is mainly due to traffic that may be the form of road traffic, rail traffic or air traffic. As the noise pollution, caused by the circulation of vehicles on road clothing, has increased substantially due to the increase of the fleet of vehicles in Romania, I tried at the Road Research Station at the Faculty of Civil Engineering of Iaşi to determine the noise produced by road traffic on different types o fbituminous clothing. The goal is to get bituminous clothing that emits as little noise as possible and satisfies the conditions of resistance in exploitation.
Measurements will be made with special sonometers in different situations, which will give a realistic look at the operating conditions at different vehicle speeds and under certain weather conditions (clear, rain, etc.). After analyzing the noise level of each required embroidery, I will try to develop a mineral skeleton that will represent the base of an asphalt mix. Moreover, the asphalt mix will be as silent as possible and the physico-mechanical and the dynamic characteristics will fit within the limits of the current standards.

Greening the building envelope is innovative technology in architecture that can regain losses of a natural environment in dense urban areas. Implementation of green living systems, greening horizontal surfaces with intensive and extensive green roofs or using vegetation in vertical greening systems for façades is a strategy that provides ecological, economic and social benefits and it is a sustainable solution for improving the environmental balance of cities limiting the major negative effects of urbanization providing better comfort at both building and urban level. The potential to provide external and internal sound insulation due to their high mass and absorption through the surface, reducing and control of noise pollution in urban areas, was investigated trough various studies. There are several situations in which noise reduction due to green living systems’ sound absorption should be considered important, such as buildings near to roads, rail or air traffic noise sources. The configurations of the systems, substrate thickness, and vegetation layer, are important factors affecting the sound absorption and sound propagation properties of these systems. This review paper presents findings from different research conditions and approaches, to explore the importance of green living systems considering the impact on noise mitigation and acoustic aesthetics of the environment.