Abstract: In an embodiment, a silencer of a vehicle's exhaust system for a fuel cell system is capable of reducing high-frequency noise and reducing noise generated from a drain, wherein the silencer includes a housing having an inlet and an outlet, a perforated tube located in the housing, the perforated tube having a plurality of through-holes, at least one baffle interposed between the housing and the perforated tube to partition a space between the housing and the perforated tube into a plurality of resonance chambers, and a cover installed in the housing to support the perforated tube and to partition the most downstream resonance chamber.

Abstract: The present invention relates to a method for increasing the flavonoid content in a plant, comprising treating the plant with a sulfur compound; a method for producing a plant with increased flavonoid content; a plant with increased flavonoid content, produced by the production method; an antioxidant composition or food composition comprising the plant, an extract thereof or a fraction thereof; and a composition for increasing the flavonoid content in a plant, comprising a compound represented by Formula (1) or (2) as an active ingredient. The sulfur compounds S17 and 3-(2-S) of the present invention activate the flavonoid pathway, which is a repository of various functional secondary metabolites, and thus, may strongly trigger the accumulation of functional flavonoids when applied to crops, thereby efficiently improving the added value of crops.

Abstract: In an embodiment, a silencer of a vehicle's exhaust system for a fuel cell system is capable of reducing high-frequency noise and reducing noise generated from a drain, wherein the silencer includes a housing having an inlet and an outlet, a perforated tube located in the housing, the perforated tube having a plurality of through-holes, at least one baffle interposed between the housing and the perforated tube to partition a space between the housing and the perforated tube into a plurality of resonance chambers, and a cover installed in the housing to support the perforated tube and to partition the most downstream resonance chamber.

Abstract: An information set extraction method based on parallel decoding for extracting m information sets (where m is an arbitrary integer greater than or equal to 1) including n attributes (where n is an arbitrary integer greater than or equal to 1) from a document, the information set extraction method including: receiving, by a system comprising a neural network model of a sequence-to-sequence (seq2seq) structure, a document; and determining m information sets through a plurality of times of decoding. The determining of m information sets through a plurality of times of decoding includes determining first column information having m first attributes through decoding; and determining i-th column information having m i-th attributes based on at least one of the first to (i?1)-th column information through decoding (where i is an arbitrary integer such that 2<=i<=n).

Abstract: Disclosed herein is a centering control type drill system for offshore structures. The centering control type drill system is installed to be elevated in a derrick for offshore drilling and rotates a drill string. The centering control type drill system includes a motor providing rotational force for offshore drilling, a gear box unit placed below the motor and increasing the rotational force of the motor, a main rotary shaft placed below the gear box unit and rotating the drill string; an intermediate bracket provided to the gear box unit, a dolly bracket disposed to be elevated in the derrick, a first dolly arm retractably coupled between the dolly bracket and the intermediate bracket by a hinge, a second dolly arm retractably coupled between the dolly bracket and the intermediate bracket by a hinge, and a cylinder rotating the second dolly arm about the hinge.

Abstract: Disclosed herein is a derrick lift system of an offshore structure. The derrick system can improve drilling workability by enabling safe and easy height adjustment of a derrick using an adjustment unit, and can improve structural stability by lowering the center of gravity of the derrick through the height adjustment of the derrick, as occasion demands.