Abstract: The present disclosure relates to a novel bacteriophage having ability to specifically kill Clostridium perfringens and an antibacterial composition comprising the same. The novel bacteriophage CJ_CP_20-25 has the effect of specifically killing Clostridium perfringens, exhibits excellent acid resistance and heat resistance, and can thus be widely used in antibiotics, feed additives, drinking water additives, feed, drinking water, disinfectants, or cleaning agents for the prevention or treatment of infectious diseases caused by Clostridium perfringens.

Abstract: The present application relates to a novel bacteriophage having enterotoxigenic Escherichia coli-specific bactericidal effect and an antibacterial composition comprising same, the novel bacteriophage CJ_Eco_20-4 having enterotoxigenic Escherichia coli-specific bactericidal effect, and being superbly acid and heat resistant to allow wide use in antibiotics, feed and additives therefor, beverages and additives therefor, disinfectants, detergents, and the like to prevent or treat infectious diseases caused by enterotoxigenic Escherichia coli.

Abstract: The present application relates to a novel bacteriophage having Clostridium perfringens-specific bactericidal effect and an antibacterial composition comprising same, the novel bacteriophage CJ_CP_20-11-1 having Clostridium perfringens-specific bactericidal effect, and being superbly acid and heat resistant to allow wide use in antibiotics, feed and additives therefor, beverages and additives therefor, disinfectants, detergents, and the like to prevent or treat infectious diseases caused by Clostridium perfringens.

Abstract: A coil component includes a body having a first surface, and a first end surface and a second end surface connected to the first surface and opposing each other in a length direction; a support substrate disposed inside the body; a coil portion comprising a first coil pattern and first and second lead-out patterns, each disposed on a first surface of the support substrate; first and second slit portions, respectively defined on edge portions of the first surface of the body to expose the first and second lead-out patterns; and first and second external electrodes disposed on the first and second slit portions to be connected to the first and second lead-out patterns. At least one of the first and second lead-out patterns has a thickness greater than a thickness of each of the first coil pattern and the first dummy lead-out pattern.

Abstract: A coil component is provided. The coil component includes a body having fifth and sixth surfaces opposing each other, first and second surfaces respectively connecting the fifth and sixth surfaces of the body and opposing each other, and third and fourth surfaces respectively connecting the first and second surfaces of the body and opposing each other in one direction, a recess disposed in an edge between one of the first and second surfaces of the body and the sixth surface of the body, a coil portion disposed inside the body and exposed through the recess, and an external electrode including a connection portion disposed in the recess and connected to the coil portion, and a pad portion disposed on one surface of the body. A length of the pad portion in the one direction is greater than a length of the connection portion in the one direction.

Abstract: Provided is an orthodontic buccal tube, which is capable of preventing glue from flowing out towards a boundary between a tooth (300) and a base (100), being firmly attached to a face of the tooth (300), and being easily removed from the face of the tooth (300) after being used. The orthodontic buccal tube is attached to the face of the tooth (300) by the glue (400), and includes a base (100) having a bonding face (110) on one side of the buccal tube, a body (200) having a slot (210) into which an archwire is inserted in the middle of the body (200) on a side opposite the base, and a glue anti-outflow step (120) formed along an outer circumference of the bonding face (110) at a predetermined height in a closed loop. The glue anti-outflow step (120) prevents the glue (400) applied to the bonding face (110) from flowing out towards a boundary between the base (100) and the tooth (300).

Abstract: Provided is an orthodontic buccal tube, which is capable of preventing glue from flowing out towards a boundary between a tooth (300) and a base (100), being firmly attached to a face of the tooth (300), and being easily removed from the face of the tooth (300) after being used. The orthodontic buccal tube is attached to the face of the tooth (300) by the glue (400), and includes a base (100) having a bonding face (110) on one side of the buccal tube, a body (200) having a slot (210) into which an archwire is inserted in the middle of the body (200) on a side opposite the base, and a glue anti-outflow step (120) formed along an outer circumference of the bonding face (110) at a predetermined height in a closed loop. The glue anti-outflow step (120) prevents the glue (400) applied to the bonding face (110) from flowing out towards a boundary between the base (100) and the tooth (300).

Abstract: Disclosed herein is an orthodontic bracket which can be firmly attached to a tooth surface and can also be easily detached from the tooth surface after having been used. The orthodontic bracket includes a plurality of channels formed in a bonding surface of a base. Each of the channels is formed such that it is long in a direction perpendicular to the slot, and is open at a first side surface thereof located at a side surface of the base. Long and short side surfaces of the channels are inclined to serve as a locking step when the orthodontic bracket is attached to the surface of the tooth.

Abstract: Disclosed is an orthodontic bracket which has excellent adhesion to a tooth surface and can be easily separated from the tooth surface after orthodontic treatment is finished. The base of the orthodontic bracket comprises an adhesion surface brought into dose contact with a tooth surface; a central projection located at a center portion of the adhesion surface; and a plurality of surrounding projections arranged at regular intervals around the central projection and made of a material which allows force of adhesion to the tooth surface of an adhesive to be greater at the surrounding projections than at the central projection.