Abstract: The present disclosure relates to a citrate synthase variant, a microorganism comprising the variant, and a method for producing L-amino acids using the microorganism.

Abstract: An air spring assembly may include: a sleeve having a space capable of filling air therein and including upper and lower openings formed respectively in upper and lower portions of the sleeve; an upper cap connected to the upper portion of the sleeve so as to close the upper opening of the sleeve; a piston connected to the lower portion of the sleeve so as to close the lower opening of the sleeve; and a cylinder coupled to the sleeve so as to enclose the sleeve. A first fixing protrusion may be formed on at least a portion of an outer peripheral surface of the sleeve, a first fixing groove may be formed in at least a portion of an inner peripheral surface of the cylinder, and the first fixing projection may be inserted into and coupled to the first fixing groove.

Abstract: There is provided method of manufacturing a knuckle for a vehicle. The method includes a preform forming operation of forming a preform serving as a preliminary molding object for forming the knuckle for a vehicle; and a main-molding-object forming operation of hot-pressing the preform to form a main molding object for forming the knuckle for a vehicle. The preform formed in the preform forming operation may be formed in a shape corresponding to a shape of the main molding object, and may be formed in a shape offset inward by a predetermined dimension from an outer shape of the main molding object.

Abstract: There is provided a vehicular suspension arm used for a suspension device of a vehicle. The vehicular suspension arm according to an embodiment of the present invention may comprise: a body portion constituting a basic body of the vehicular suspension arm; and a mounting portion formed in one end of the body portion and configured to connect the vehicular suspension arm to a wheel or a vehicle body of the vehicle, wherein the body portion may have a closed-box-section structure in which a hollow inner space is defined, and the closed-box-section structure may be configured such that the body portion is formed to integrally extend around the hollow inner space.