Abstract: An apparatus for processing a substrate includes a first bowl and a processing space therein; a first support portion disposed in the processing space and configured to support the substrate in a first support position; a second bowl disposed to move in a first direction in the processing space; a second support portion configured to move upwardly and downwardly with respect to the first support portion to support the substrate between the second support position disposed above the first support position and the third support position, and to move in the first direction; and a cleaning unit including a first cleaning portion disposed below the substrate toward a rear surface of the substrate in the first support position and a second cleaning portion disposed below the substrate and opposing a rear surface of the substrate between the second support position and the third support position.

Abstract: The present disclosure relates to a nanobubble generation system using friction in which a frictional force is applied to bubbles included in a gas-liquid mixed fluid so that the atomization of the bubbles is induced and nanobubbles are generated.

Abstract: A structural member with a core bar which reduces manufacturing costs, enables easy construction of various curved building structures such as a dome-shaped building structure or an arch-shaped building structure without a truss structure or a formwork. The structural member includes: at least one elastic core bar formed in a bar shape; and an outer body or an outer cover into which the at least one core bar is inserted. The core bar is formed at least one of wood such as a bamboo strip or a composite bamboo bar, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material. The outer body or the outer cover is formed of at least one of a metallic material such as aluminum, a synthetic resin material, a glass fiber composite material, and a carbon fiber composite material.