Summary:  The analysis of the results of the static tests of the copper ring is immersed in liquid and exposed to the influence of external sound radiation. Reveals the nature of formation in the liquid the concentration of sound waves in a surface caustics. Explains the causes of the concentration of sound waves and the emergence of global and local moving fluid flows. Analyzes the energy status of the liquid inside the limited ring space with different directions of action of the sound beam with flat front.

Keywords: caustic, aberela, wave size, the concentration of the sound waves driving the flow, diffraction.

Summary: In the paper modern playpens constructions, which is designed to create a specific skills or abilities in childhood, are analyzed. Established presence and degree of influence of Coriolis acceleration on the formation sided driving ability of upper and lower extremities during the development of children. The construction of playpen, which provides a full and harmonious development of the child, is purposed.

Keywords: playpen, Coriolis acceleration, left-handed, right-hand limbs, Coriolis force of inertia.

Summary. We give one of the possible technical solutions for remote control of heat transfer in the bioreactor at resonant levels by ultrasound beam. Outlines the conditions of coincidence wave, which is accompanied by a sharp increase of energy activity, along with a minimum dissipation of radiation waves. Explained the nature of the additional energy activity in areas of caustic surfaces with two types of waves.

Keywords: bioreactor, energy activity, wave coincidence, cavitation, cutoff frequency.