Abstract: The present disclosure relates to the field of a stability design of pressure vessels and main bearing members of nuclear engineering, and discloses a new design method for an allowable compressive stress of an axially compressed cylinder. By introducing elastic-plastic influence parameters and cylinder structure characteristic parameters, a critical buckling stress values of axially compressed cylinders under different buckling failure modes and a critical buckling stress reduction factor considering the influence of initial defects are obtained. At the same time, a design safety factor of the axially compressed cylinder is given, and a new calculation flow for the allowable compressive stress of the axially compressed cylinder is put forward. The present method is of great significance to promote the development of large-scale and lightweight axially compressed cylinders in engineering.

Abstract: A two-channel burner includes a pulverized coal supply mechanism, a transition channel, an inner secondary air guide tube, an outer secondary air guide tube, a combustion stabilizing chamber, and a flow smoothing chamber. The outer secondary air guide tube, the combustion stabilizing chamber, and the flow smoothing chamber are sequentially connected to form a burner body. The pulverized coal supply mechanism passes through an interior of the burner body. The transition channel is fitted over the pulverized coal supply mechanism. The inner secondary air guide tube is disposed between the transition channel and the outer secondary air guide tube and forms an inner secondary air passage together with the transition channel, and forms an outer secondary air passage together with the outer secondary air guide tube. An outlet end of the inner secondary air guide tube is formed to have a flared opening.

Abstract: A personal product comprising a liquid cosmetic composition and a hand-held electrostatic spraying device suitable for applying the composition to the human body, said hand-held electrostatic spraying device comprising a slit nozzle having a maximum width of from 0.05 mm to 0.5 mm, means for containing the liquid cosmetic composition, means for supplying the liquid cosmetic composition to the nozzle, an electricity source, high voltage circuitry arranged so that, in use, liquid cosmetic composition sprayed in atomised form from the nozzle is electrically charged, and control means for selectively applying a high voltage.

Abstract: A personal product comprising a liquid cosmetic composition and a hand-held electrostatic spraying device suitable for applying the composition to the human body, said hand-held electrostatic spraying device comprising a slit nozzle having a maximum width of from 0.05 mm to 0.5 mm, means for containing the liquid cosmetic composition, means for supplying the liquid cosmetic composition to the nozzle, an electricity source, high voltage circuitry arranged so that, in use, liquid cosmetic composition sprayed in atomized form from the nozzle is electrically charged, and control means for selectively applying a high voltage.