Abstract: A semiconductor device includes a substrate, a first sheet pattern on the substrate, a gate electrode on the substrate and surrounding the first sheet pattern, a first source/drain pattern and a second source/drain pattern respectively connected to a first end and a second end of the first sheet pattern, a contact blocking pattern on a lower side of the second source/drain pattern, a first source/drain contact extending in a first direction and connected to the first source/drain pattern, and a second source/drain contact connected to the second source/drain pattern and extending in the first direction to contact an upper surface of the contact blocking pattern. A depth from an upper surface of the gate electrode to a lowermost portion of the first source/drain contact may be greater than a depth from the upper surface of the gate electrode to the upper surface of the contact blocking pattern.

Abstract: Disclosed are novel compounds of Chemical Formula 1, optical isomers of the compounds, and pharmaceutically acceptable salts of the compounds or the optical isomers. The compounds, isomers, and salts exhibit excellent activity as GLP-1 receptor agonists. In particular, they, as GLP-1 receptor agonists, exhibit excellent glucose tolerance, thus having a great potential to be used as therapeutic agents for metabolic diseases. Moreover, they exhibit excellent pharmacological safety for cardiovascular systems.

Abstract: A stopper for robot rotary articulation limits the rotation angle of a shaft where a protrusion is formed. The stopper includes a first ring-shaped bush member, a second bush member, having an inner diameter smaller than that of the first bush member, connected to an inner circumference of the first bush member to form a step surface against the first bush member, and rotatably supported by inserting the shaft therein, a first stop protrusion extending from an inner surface of the first bush member in a radial direction thereof and a second stop protrusion protruded from an outer circumferential surface of the second bush member, in which the protrusion of the shaft during rotation of the shaft slides against the step surface and contacts with the first stop protrusion, to thereby rotate the stopper, and the second stop protrusion contacts with a protrusion fixed to a housing of a robot rotary articulation to thereby stop rotation of the shaft and stopper.

Abstract: Provided are a method and apparatus for providing and using content advisory (CA) information on Internet contents. A method of providing CA information by using a CA information server, includes receiving a request for the CA information on a content, from an Internet Protocol television (IPTV); searching for CA information on the content; and transmitting the found CA information to the IPTV. A method of using CA information when an IPTV reproduces a content not having the CA information, according to the present invention, includes transmitting a request for CA information, to a CA information server; receiving the CA information from the CA information server; analyzing the CA information; and applying the CA information.