Abstract: A gripper includes a body part, a finger base part coupled to the body part, and a finger part coupled to a first side of the body part or the finger base part and coupled to the body part or the finger base part to be reciprocal, wherein the finger part comprises a first link structure and a second link structure, sides of which are coupled to the finger base part, respectively, and wherein, in the first link structure and the second link structure, a first support area of the first link structure and a second support area of the second link structure reciprocate in only one of a plurality of directions that cross a direction in which the finger part reciprocates with respect to the finger base part.

Abstract: A gripper includes a body part, a finger base part coupled to the body part to be rotatable, the finger base part including a first finger base part and a second finger base part configured such that when the first finger base part is rotated in a first direction with respect to the body part, the second finger base part is provided to be rotatable in a second direction opposite the first direction with respect to the body part, and a finger part coupled to a first side of the body part or the finger base part to be reciprocal.

Abstract: An embodiment device includes an input module including a motor configured to generate a rotational force, an output module configured to receive power from the input module to be rotatable, and a connection module having a first side coupled to the input module and a second side, opposite the first side, coupled to the output module, wherein the connection module is configured to transmit the power from the input module to the output module.

Abstract: An apparatus of tilting a seat cushion of a vehicle, includes a tilting motor, a pinion gear, a sector gear, and a tilting link which perform the tilting operation of the seat cushion and exert a binding force in a tilted state of the seat cushion and are provided to be connected to both of one side and the other side of a seat cushion frame, and has two sector gears positioned on left and right sides and connected to each other by a connection bar so that, by strengthening a binding force of the front portion of the seat cushion, it is possible to secure the safety of passengers in the event of a collision.

Abstract: A nickel-M-alumina hybrid xerogel catalyst for preparing methane, wherein the metal M is at least one element selected from the group consisting of Fe, Co, Ni, Ce, La, Mo, Cs, Y, and Mg, a method for preparing the catalyst and a method for preparing methane using the catalyst are provided. The catalyst has strong resistance against a high-temperature sintering reaction and deposition of carbon species, and can effectively improve a conversion ratio of carbon monoxide and selectivity to methane.

Abstract: A method for preparing synthetic natural gas (SNG) is provided. More particularly, a method for preparing synthetic natural gas is provided, in which synthetic gas generated after fuel gasification and dust collection is subjected to a first methane synthesis reaction; only part of the gas is subjected to a water gas shift reaction and the remaining gas bypasses; the mixed gas prepared by mixing the gas passed through the water gas shift reaction and the gas bypassing the water gas shift reaction is subjected to a second methane synthesis reaction; and thereby heat of the methane synthesis reaction can be controlled and catalyst life can be lengthened.

Abstract: A nickel-M-alumina hybrid xerogel catalyst for preparing methane, wherein the metal M is at least one element selected from the group consisting of Fe, Co, Ni, Ce, La, Mo, Cs, Y, and Mg, a method for preparing the catalyst and a method for preparing methane using the catalyst are provided. The catalyst has strong resistance against a high-temperature sintering reaction and deposition of carbon species, and can effectively improve a conversion ratio of carbon monoxide and selectivity to methane.