Vertical Speed Control Measures are vertical elevated segments of roadway that require a vehicle to slow. Typical vertical speed control measures include speed humps, speed tables, raised sidewalks and raised intersections. ...

In this article was analyzed acoustic efficiency of two different construction noise barriers. Field measurements of noise tests were carried out before and behind a wooden barrier, which height was 2.9 meters and a wooden ...

Nano zero-valent iron (nZVI) particles have attracted much attention due to their ability to eliminate phosphate (PO4-P) from water. In this study, samples of river water with a high concentration of PO4-P were collected ...

The excessive noise of machines and devices could be reduced with the use of acoustic enclosures. Additional requirement for enclosures: free air circulation through construction walls, which is important for device ...

Noise – messy loud noises of different frequencies, which have various types of pressure, which can be felt as air vibrations or sounds that interfere with human comfort. This kind of noise can be transferred through ...

Plastic and waste production has increased significantly in recent years. According to the various predictions the plastic production is not slowing down in the near future. Since 1960, plastic production has risen to 322 ...

Noise barriers have been widely used around the world for many years. Solutions are being sought on how waste or plant-based materials can be integrated into the production of barriers, which would not deteriorate the ...