Abstract: The present disclosure relates to a printed circuit board including, a first insulating layer, a first metal layer disposed on the first insulating layer, a bridge disposed on the first metal layer and including a bridge insulating layer and a bridge circuit layer, a second insulating layer disposed on the first insulating layer and covering at least a portion of the bridge, a second metal layer disposed on the second insulating layer, and a connecting via penetrating the bridge and the second insulating layer to connect the first metal layer to the second insulating layer. The connecting via is spaced apart from the bridge circuit layer.

Abstract: A server according to an embodiment includes a processor configured to receive a friend add request for a target account from a user terminal accessed with a user account; based on one of the user account and the target account being a protected account, transmit an approval request for the friend add request to a protector account connected to the protected account; and based on receiving a reply to the approval request from the protector terminal, add the target account to a friend list of the user account.

Abstract: An oven having an improved hinge structure of a door, which is capable of preventing deformation of the door and opening a part of a plurality of cooking chambers is provided. The oven includes a main body, a cooking chamber provided inside of the main body, a first door rotatably coupled to the main body by a first hinge unit to open or close the cooking chamber, the first door including a door frame having an opening, at least one reinforcing unit coupled to the door frame, and configured to prevent deformation of the first door, a second door rotatably coupled to the first door, and configured to open or close the opening, and a second hinge unit configured to enable the second door to be rotatably coupled to the first door, and including a hinge shaft positioned behind a front surface of the first door.

Abstract: A steam cooking apparatus with improved water supply and drainage structures. The apparatus includes a body, a cooking compartment, a steam generator to supply steam into the cooking compartment, a water vessel to store water and supply the water into the steam generator, a water supply device including a holder and a slider slidably mounted in the holder so as to be withdrawn from the body, a first water supply tube connecting the slider and the water vessel, a second water supply tube connecting the water vessel and the steam generator, and a drain tube to drain water in the steam generator to the outside of the body. The drain tube includes an end fixed to the slider so that the end of the drain tube is withdrawn with the slider from the body when water in the steam generator is drained to the outside.

Abstract: An oven having an improved hinge structure of a door, which is capable of preventing deformation of the door and opening a part of a plurality of cooking chambers is provided. The oven includes a main body, a cooking chamber provided inside of the main body, a first door rotatably coupled to the main body by a first hinge unit to open or close the cooking chamber, the first door including a door frame having an opening, at least one reinforcing unit coupled to the door frame, and configured to prevent deformation of the first door, a second door rotatably coupled to the first door, and configured to open or close the opening, and a second hinge unit configured to enable the second door to be rotatably coupled to the first door, and including a hinge shaft positioned behind a front surface of the first door.

Abstract: An oven, which both satisfies heat insulating and cooling of a door by adjusting an air flow in channels formed in the door. The oven includes a plurality of channels provided in a door, into which external air flows, accompanied with air discharged by a discharge duct, such that the air flows in the plurality of the channels, and a flow conversion part formed above at least one of the plurality of the channels for stagnating the flow of air. Since the door insulates a cooking chamber from heat and is cooled using a difference of pressures between upper and lower portions of the door, the oven concurrently satisfies conflicting two requirements, such as heat insulating and cooling of the door.

Abstract: An over having an improved exhaust structure capable of discharging a fluid of the inside of a cooking chamber at a constant rate, the oven including a cooking chamber cooking food, a machine chamber disposed at an upper side of the cooking chamber and accommodating an electronic component, a cooling fan unit disposed at an inside of the machine chamber to cool the machine chamber, and a flow passage guide communicating with an inside the cooking chamber and an inside of the cooling fan unit such that a fluid of the inside of the cooking chamber is introduced to the inside of the cooling fan unit, wherein the cooling fan unit includes a cooling fan configured to suck a fluid of the inside the machine chamber and blow the fluid to the outside environment.

Abstract: The present invention relates to sesterterpene compounds, to the precursors thereof that are hydrolysable in a living body, or to the pharmaceutically acceptable salts thereof, and also relates to the prevention and treatment efficacy of the sesterterpene compounds with respect to non-insulin dependent diabetes mellitus, diabetic complications (renal failure and foot ulcers caused by diabetes), alcoholic, non-alcoholic, and viral fatty liver diseases, obesity, hyperlipidemia, atherosclerosis, cardiovascular diseases such as atherosclerotic stroke, and cerebropathies (Parkinsonism, schizophrenia and Alzheimer's disease). In addition, the present invention relates to compositions for functional foods, functional beverages, functional cosmetics, and functional feed.

Abstract: A steam cooking apparatus with improved water supply and drainage structures. The apparatus includes a body, a cooking compartment, a steam generator to supply steam into the cooking compartment, a water vessel to store water and supply the water into the steam generator, a water supply device including a holder and a slider slidably mounted in the holder so as to be withdrawn from the body, a first water supply tube connecting the slider and the water vessel, a second water supply tube connecting the water vessel and the steam generator, and a drain tube to drain water in the steam generator to the outside of the body. The drain tube includes an end fixed to the slider so that the end of the drain tube is withdrawn with the slider from the body when water in the steam generator is drained to the outside.

Abstract: An oven, which both satisfies heat insulating and cooling of a door by adjusting an air flow in channels formed in the door. The oven includes a plurality of channels provided in a door, into which external air flows, accompanied with air discharged by a discharge duct, such that the air flows in the plurality of the channels, and a flow conversion part formed above at least one of the plurality of the channels for stagnating the flow of air. Since the door insulates a cooking chamber from heat and is cooled using a difference of pressures between upper and lower portions of the door, the oven concurrently satisfies conflicting two requirements, such as heat insulating and cooling of the door.