Abstract: A circuit board according to an embodiment includes an insulating layer including a first via hole; a first via disposed in the first via hole of the insulating layer; wherein the first via includes: a first via part disposed in a first region of the first via hole; and a second via part disposed in a second region other than the first region of the first via hole; wherein the second region is a central region of the first via hole, and the first region is an outer region surrounding the second region; wherein the first via part and the second via part includes: a first surface in contact with each other; and a second surface other than the first surface exposed on the insulating layer; wherein the first surface has a first surface roughness; wherein the second surface has a second surface roughness different from the first surface roughness.

Abstract: A washing machine including a plurality of washers may include a fixing bracket coupled to a front of a first housing in which a first tub is disposed and a front of a second housing in which a second tub is disposed, to prevent the first housing and the second housing from being separated from each other.

Abstract: Provided is a washing machine including a main body having an opening and a door assembly disposed at the opening, wherein the door assembly includes a door that opens and closes the opening and an auxiliary washing unit having an auxiliary washing space in which hand-washing can be performed, and provided to pivot about one side of the door in an inside of the door. Through this configuration, separated washing spaces can be provided and separate hand-washing can be performed. Also, pressure of washing water supplied into the washing machine can be regulated so that water supply efficiency can be improved and a flow rate of the washing water can be adjusted.

Abstract: A printed circuit board includes an insulating layer, a circuit pattern on the insulating layer, and a surface treatment layer on the circuit pattern. The surface treatment layer includes a bottom surface having a width wider than a width of a top surface of the circuit pattern.

Abstract: A storage device having improved security reliability includes a non-volatile memory, and a storage controller configured to control an operation of the non-volatile memory, generate a key material, receive a key identification (ID) from a firmware, determine whether a salt value matching the key ID is stored in the non-volatile memory, generate a private key using the salt value stored in the non-volatile memory and the key material in response to determining that the salt value matching the key ID is stored in the non-volatile memory, and, in response to determining that the sale value matching the key ID is not stored in the non-volatile memory, receive a salt value from the firmware and generate the private key using the salt value from the firmware and the key material, and store the salt value used for generating the private key in the non-volatile memory.

Abstract: A circuit board according to an embodiment includes an insulating layer including a first via hole; a first via disposed in the first via hole of the insulating layer; wherein the first via includes: a first via part disposed in a first region of the first via hole; and a second via part disposed in a second region other than the first region of the first via hole; wherein the second region is a central region of the first via hole, and the first region is an outer region surrounding the second region; wherein the first via part and the second via part includes: a first surface in contact with each other; and a second surface other than the first surface exposed on the insulating layer; wherein the first surface has a first surface roughness; wherein the second surface has a second surface roughness different from the first surface roughness.

Abstract: A washing machine including a plurality of washers may include a fixing bracket coupled to a front of a first housing in which a first tub is disposed and a front of a second housing in which a second tub is disposed, to prevent the first housing and the second housing from being separated from each other.

Abstract: The present invention relates to a yeast extract having a high tripeptide content and a high dry matter content using a yeast cell containing tripeptide and a method for preparing the same.

Abstract: A method of manufacturing a printed circuit board includes providing an insulating layer, forming a plating seed layer on the insulating layer, forming a first circuit pattern on the plating seed layer and a second circuit pattern on the first circuit pattern, and forming a top metal layer on the second circuit pattern. The second circuit pattern can be thinner than the first circuit pattern, and the top metal layer can be wider than the second circuit pattern.

Abstract: A washing machine including a plurality of washers may include a fixing bracket coupled to a front of a first housing in which a first tub is disposed and a front of a second housing in which a second tub is disposed, to prevent the first housing and the second housing from being separated from each other.

Abstract: The present invention relates to a newly isolated bacterium belonging to the genus Microbacterium, a composition for producing psicose comprising the strain, and a method for producing psicose using the same.

Abstract: A printed circuit board includes an insulating layer, a circuit pattern on the insulating layer, and a surface treatment layer on the circuit pattern. The surface treatment layer includes a bottom surface having a width wider than a width of a top surface of the circuit pattern.

Abstract: A printed circuit board includes an insulating layer, a circuit pattern on the insulating layer, and a surface treatment layer on the circuit pattern. The surface treatment layer includes a bottom surface having a width wider than a width of a top surface of the circuit pattern.

Abstract: The present invention relates to a method of obtaining a psicose-containing product from a fructose-containing substrate with high productivity in a short time on an industrial scale by an immobilization reaction using a biocatalyst for producing a psicose, and a method of preparing a liquid type or powder type of psicose by isolating the psicose-containing product obtained by the method and preparing a psicose continuously by inputting a byproduct of isolation process into a process of production of psicose-containing product.

Abstract: A circuit board according to an embodiment includes an insulating layer including a first via hole; a first via disposed in the first via hole of the insulating layer; wherein the first via includes: a first via part disposed in a first region of the first via hole; and a second via part disposed in a second region other than the first region of the first via hole; wherein the second region is a central region of the first via hole, and the first region is an outer region surrounding the second region; wherein the first via part and the second via part includes: a first surface in contact with each other; and a second surface other than the first surface exposed on the insulating layer; wherein the first surface has a first surface roughness; wherein the second surface has a second surface roughness different from the first surface roughness.

Abstract: A washing machine comprises a first housing having a first laundry loading port, a first tub disposed in the first housing, a second housing having a second laundry loading port formed at a top portion and disposed on the first housing, a second tub disposed in the second housing, a water supply device connected to an external water source to supply wash water to the first tub and the second tub and installed at the second housing. The water supply device comprises a water supply connector having a plurality of chambers, a first water supply hose connecting the water supply connector with the first tub, a second water supply hose connecting the water supply connector with the second tub, and a backflow prevention structure formed in one of the plurality of the chambers to operate by a pressure of wash water supplied to the plurality of chambers.

Abstract: The present disclosure relates to cell immobilized beads and a method for preparing the same and, more specifically, to cell-immobilized beads wherein the conversion activity of cells contained in the immobilized beads is excellent and wherein the conversion activity is maintained even during distribution and storage processes, a method for preparing the cell-immobilized beads, and a use of the conversion activity of the beads.

Abstract: A printed circuit board includes an insulating layer, a circuit pattern on the insulating layer, and a surface treatment layer on the circuit pattern. The surface treatment layer includes a bottom surface having a width wider than a width of a top surface of the circuit pattern.

Abstract: A printed circuit board includes an insulating layer, a circuit pattern on the insulating layer, and a surface treatment layer on the circuit pattern. The surface treatment layer includes a bottom surface having a width wider than a width of a top surface of the circuit pattern.

Abstract: A tool holder for a cutting insert is proposed, the tool holder being configured to make it possible to easily mount and separate only an insert that is worn during cutting or needs to be replaced for various types of machining, make it possible to easily replace a cutting insert when replacing the cutting insert, and have a coupling structure that enables replacement of even a cutting body on which a cutting insert is mounted.