Abstract: Provided are an apparatus for producing inorganic powder, and a method of producing inorganic powder by using such. The apparatus includes a vaporization part where a condensed-phase precursor is vaporized to obtain a gas-phase precursor, a partial precipitation part where the gas-phase precursor obtained in the vaporization part is partially precipitated to a condensed phase, and a reaction part where the gas-phase precursor remaining after being partially precipitated to a condensed phase in the partial precipitation part reacts with a reaction gas to obtain inorganic powder. An equilibrium vapor pressure of the gas-phase precursor in the partial precipitation part is lower than a vapor pressure of the gas-phase precursor obtained in the vaporization part, and an equilibrium vapor pressure of the precursor in the reaction part is equal to or higher than a vapor pressure of the gas-phase precursor partially precipitated to a condensed phase in the partial precipitation part.

Abstract: An air purifier is disclosed.

Abstract: A compound, a stereoisomer thereof, a hydrate thereof, or a pharmaceutically acceptable salt thereof, provided as one aspect of the present invention, exhibits a high inhibitory ability on euchromatic histone-lysine N-methyltransferase 2 (EHMT2), and thus, the compound can be usefully used for the treatment of cancer.

Abstract: The present invention relates to a method for preparing a biomaterial having selectively functionalized tyrosine, a biomaterial having selectively functionalized tyrosine, and a pharmaceutical composition containing the same as an active ingredient. The method for preparing a biomaterial to which a compound represented by formula 2 is coupled, of the present invention, allows the compound represented by formula 2 to be selectively coupled, in a high yield in a biomaterial, to tyrosine, which is present on the surface of an aqueous solution such that the coupling thereof to amino acids other than tyrosine does not occur and, when only one tyrosine is present, heterogeneous mixtures are not present and the inherent activity of the biomaterial is maintained, and thus the compound can be effectively used as a pharmaceutical composition containing a biomaterial drug as an active ingredient.

Abstract: A system and method for controlling a discharge of residual water remaining in a fuel cell stack after an operation of a fuel cell is ended is provided. The method includes determining whether a preset temperature condition is satisfied, determining whether a preset time condition is satisfied when the temperature condition is satisfied, and discharging residual water in a fuel cell stack while a vehicle travels when the temperature condition and the time condition are satisfied.

Abstract: An USB device includes: a wireless communication unit; a storage unit configured for storing a driving program, a driving application, a driving command, and/or data received from an external information device and/or a server therein; and a control unit configured for controlling the wireless communication unit, the storage unit, wherein the control unit includes: a data processor configured for controlling a data processing operation using the driving program, the driving application or the driving command; and a transmission controller configured for: receiving data from the information device under control of the data processor; and selectively allowing or disallowing data transmission from the data processor to the information device.

Abstract: An USB device includes: a wireless communication unit; a storage unit configured for storing a driving program, a driving application, a driving command, and/or data received from an external information device and/or a server therein; and a control unit configured for controlling the wireless communication unit, the storage unit, wherein the control unit includes: a data processor configured for controlling a data processing operation using the driving program, the driving application or the driving command; and a transmission controller configured for: receiving data from the information device under control of the data processor; and selectively allowing or disallowing data transmission from the data processor to the information device.

Abstract: The present invention relates to a substrate processing apparatus: including a chamber comprising a body having an inner space and a top lid provided on an upper part of the body, the top lid having at least one gas input port; a substrate supporting unit rotatably installed inside the chamber to support a plurality of substrates; and a gas injection device comprising a central injection unit provided on an upper part of the substrate supporting unit to inject a gas into a central region of the substrate supporting unit, a source gas injection unit provided around the central injection unit to inject a source gas into the substrate supporting unit, a reaction gas injection unit provided around the central injection unit to inject a reaction gas into the substrate supporting unit and a purge gas injection unit disposed between the source gas injection unit and the reaction gas injection unit; wherein at least one of the source gas injection unit and the reaction gas injection unit comprises a main injection un

Abstract: An image sensor includes a substrate having a front side and a back side, an insulating structure containing circuits on the front side of the substrate, contact holes extending through the substrate to the circuits, respectively, and a plurality of pads disposed on the backside of the substrate, electrically connected to the circuits along conductive paths extending through the contact holes, and located directly over the circuits, respectively. The image sensor is fabricated by a process in which a conductive layer is formed on the back side of the substrate and patterned to form the pads directly over the circuits.

Abstract: Provided is a method for managing a group key in a key distribution center. The method includes: receiving a key request from a mobile device; generating a private key for the mobile device using information about a withdrawal time included in the key request; generating a public key and a verification key for the mobile device; and transmitting at least one key including the generated key to the mobile device.

Abstract: The present invention relates to a method and apparatus for updating a key for encrypting multicast data in a wireless communication system. The method of the present invention is characterized by comprising: an information receiving step of receiving information on a group entry time and a group exit time from users who have newly entered an arbitrary group including at least one subgroup; a grouping step of grouping the users using the information on the group entry time and the group exit time; and a key transmission step of either transmitting, to the newly-entered users, keys related to the group and the subgroups, or updating, for the remaining users of the subgroups, both the key related to the subgroup to which the user exiting the group belongs and the key of the group and then transmitting the updated keys to the users of the subgroups.

Abstract: A variant of Corynebacterium shows activity greater than the endogenous activity of aspartate aminotransferase, aspartate kinase, aspartate semialdehyde dehydrogenase, dihydrodipicolinate synthase, dihydropicolinate reductase and diaminopimelate dicarboxylase and additionally pyruvate carboxylase. The variant is used in a method of producing L-lysine.

Abstract: An image sensor having a sensor array area, a circuit area around the sensor array area, and a pad area adjacent to the circuit area includes a substrate, a multi-layer wiring structure including a plurality of wiring layers on a first surface of the substrate in the circuit area, at least one well in the substrate in the circuit area, and metal wiring that extends on a second surface of the substrate opposite to the first surface, from the pad area to the circuit area, and extends from the second surface into contacts with the at least one well.

Abstract: The present invention relates to a method for producing L-methionine, comprising: i) culturing an L-methionine precursor-producing microorganism strain in a fermentation solution, so that the L-methionine precursor accumulates in the solution; and ii) mixing a converting enzyme and methylmercaptan or its salts with at least a portion of the solution to convert the accumulated L-methionine precursor into L-methionine, as well as to microorganism strains used in each step.

Abstract: An image sensor includes a substrate having a front side and a back side, an insulating structure containing circuits on the front side of the substrate, contact holes extending through the substrate to the circuits, respectively, and a plurality of pads disposed on the backside of the substrate, electrically connected to the circuits along conductive paths extending through the contact holes, and located directly over the circuits, respectively. The image sensor is fabricated by a process in which a conductive layer is formed on the back side of the substrate and patterned to form the pads directly over the circuits.

Abstract: The present invention relates to a substrate processing apparatus: including a chamber comprising a body having an inner space and a top lid provided on an upper part of the body, the top lid having at least one gas input port; a substrate supporting unit rotatably installed inside the chamber to support a plurality of substrates; and a gas injection device comprising a central injection unit provided on an upper part of the substrate supporting unit to inject a gas into a central region of the substrate supporting unit, a source gas injection unit provided around the central injection unit to inject a source gas into the substrate supporting unit, a reaction gas injection unit provided around the central injection unit to inject a reaction gas into the substrate supporting unit and a purge gas injection unit disposed between the source gas injection unit and the reaction gas injection unit; wherein at least one of the source gas injection unit and the reaction gas injection unit comprises a main injection un

Abstract: The present invention relates to a method for producing L-methionine, comprising: i) culturing an L-methionine precursor-producing microorganism strain in a fermentation solution, so that the L-methionine precursor accumulates in the solution; and ii) mixing a converting enzyme and methylmercaptan or its salts with at least a portion of the solution to convert the accumulated L-methionine precursor into L-methionine, as well as to microorganism strains used in each step.

Abstract: Provided are methods and apparatuses for manufacturing a multilayer metal thin film without additional heat treatment processes. The method of manufacturing a multilayer metal thin film including steps of: (a) forming a first metal layer on a substrate by flowing a first metal precursor into a first reaction container; and (b) forming a second metal layer on the first metal layer by flowing a second metal precursor into a second reaction container, wherein the step (b) is performed in a range of a heat treatment temperature of the first metal layer so that the second metal layer is formed as the first metal layer is heat-treated.

Abstract: The present invention relates to a microorganism having L-tryptophan productivity and a method for producing L-tryptophan using the same. More precisely, the present invention relates to the recombinant E. coli strain CJ600 (KCCM 10812P) having tryptophan productivity produced from the mutant form (KFCC 10066) of E. coli having L-phenylalanine productivity, wherein tryptophan auxotrophy is released, L-phenylalanine biosynthesis is blocked but tryptophan productivity is enhanced by reinforcing the gene involved in tryptophan biosynthesis, and a method of producing L-tryptophan using the same.

Abstract: An integrated circuit chip having an anti-moisture-absorption film at the edge thereof and a method of forming the anti-moisture-absorption film are provided. In the integrated circuit chip which has predetermined devices inside and whose uppermost layer is covered with a passivation film, a trench is formed by etching interlayer dielectric films to a predetermined depth along the perimeter of the integrated circuit chip to be adjacent to the edge of the integrated circuit chip and an anti-moisture-absorption film is formed to fill the trench or is formed on the sidewall of the trench to a predetermined thickness, in order to prevent moisture from seeping into the edge of the integrated circuit chip. Moisture is effectively prevented from seeping into the edge of the chip by forming the anti-moisture-absorption film at the edge of the chip using the conventional processes of manufacturing the integrated circuit chip without an additional process.