Thermal deformation of concentrators in an axisymmetric temperature field

Axisymmetric thermal deformations of paraboloid mirrors, due to heating, are examined for a mirror with a optical axis oriented toward the Sun. A governing differential equation is derived using Mushtari-Donnel-Vlasov simplifications, and a solution is presented which makes it possible to determine the principal deformation characteristics

TECHNICAL REQUIREMENTS, RESTRICTIONS AND PROHIBITIONS TO THE PLACES FOR SMOKING

The article deals with the issues of arrangement of places for smoking in accordance with the requirements established by the legislation on the restriction and prohibition of smoking in enterprises, workers and in public places, as well as financial sanctions in case of violation of these requirements