Abstract: A method for manufacturing a gas diffusion layer for a fuel cell wherein carbon nanotubes are impregnated into Korean paper, thereby enhancing electroconductivity, and a gas diffusion layer manufactured thereby. The method for manufacturing a gas diffusion layer for a fuel cell which is to manufacture a gas diffusion layer as a constituent member of a unit cell in a fuel cell, includes a support preparation step of preparing a support with Korean paper; a dispersion preparation step of dispersing a carbon substance in a solvent to form a dispersion, a coating step of coating the support with the dispersion, and a thermal treatment step of thermally treating the dispersion-coated support to fix the carbon substance to the support.

Abstract: The present specification relates to a heterocyclic compound represented by Chemical Formula 1 and an organic light emitting device including the same.

Abstract: A gene amplification chip includes a chamber layer, a cover layer, a bottom layer, an inlet, and an outlet. The chamber layer has a first passage and through holes which are formed on one side of the first passage. The cover layer is disposed on one side of the chamber layer and has a cover channel formed to communicate with the first passage and the through holes, wherein the cover channel, the first passage and the through holes allow passage of liquids in a divided manner. The bottom layer is disposed on another side of the chamber layer and has a bottom channel formed to communicate with the first passage and the through holes. The inlet is formed in the cover layer and communicates with the cover channel. The outlet communicates with any one of the cover channel and the bottom channel.

Abstract: An embodiment sulfur dioxide-based inorganic electrolyte is provided in which the sulfur dioxide-based inorganic electrolyte is represented by a chemical formula M·(A1·Cl(4-x)Fx)z·ySO2. In this formula, M is a first element selected from the group consisting of Li, Na, K, Ca, and Mg, A1 is a second element selected from the group consisting of Al, Fe, Ga, and Cu, x satisfies a first equation 0?x?4, y satisfies a second equation 0?y?6, and z satisfies a third equation 1?z?2.

Abstract: An apparatus for measuring a concentration of a target gas includes: a gas sensor including a sensing layer having an electric resistance that changes by an oxidation reaction or a reduction reaction between gas molecules and the sensing layer; and a processor configured to, in response to the target gas being introduced along with air into the gas sensor, monitor a change of the electric resistance of the sensing layer and determine the concentration of the target gas by analyzing a shape of the change of the electric resistance.

Abstract: A transition metal compound and an olefin polymerization catalyst containing the transition metal compound are disclosed. A method for preparing the transitional metal and a method for preparing the catalyst are disclosed. The transition metal compound has a carbon-bridged cyclopentadienyl-fluorenyl skeleton bearing a substituted bisphenyl group. The olefin polymerization catalyst contains the transition metal compound and a cocatalyst compound.

Abstract: A catalyst containing mixed transition metal compounds is disclosed. The catalyst is capable of producing various polyolefins having excellent processability and mechanical properties. A polyolefin prepared using the catalyst and processes for preparing the polyolefin are disclosed. In the preparation process, it is possible to conveniently prepare a catalyst for olefin polymerization including mixed transition metal compounds by readily adjusting the ratio of the transition metal compounds.

Abstract: A roll type raw material supply device includes a raw material mounting unit for introducing a roll type raw material to which a tape for fixing to the end portion of a raw material is attached; a tape removal unit for clamping a non-bonding portion of the tape and separating the tape from the raw material; and a raw material conveying unit for attaching and moving the raw material. The roll type raw material supply device is capable of automatically and effectively removing the tape attached to a roll type raw material and causing the end portion of the raw material to be moved to a desired location without damage such as warping.

Abstract: The present invention relates to a hybrid catalyst composition comprising different transition metal compounds, to a catalyst for olefin polymerization comprising the same, and to processes for preparing the same. Specifically, the present invention relates to a hybrid catalyst composition comprising two or more types of transition metal compounds having a non-bridged biscyclopentadienyl group with different central metals, to a catalyst for olefin polymerization comprising the same, and processes for preparing the hybrid catalyst composition and the catalyst.

Abstract: The present invention relates to a hybrid catalytic composition comprising different transition metal compounds, to a catalyst for olefin polymerization comprising the same, and to processes for preparing the same. Specifically, the present invention relates to a hybrid catalytic composition comprising different transition metal compounds capable of producing various polyolefins having excellent processability and mechanical properties, to a catalyst for olefin polymerization comprising the same, and processes for preparing the hybrid catalytic composition and the catalyst by adjusting the ratio of the transition metal compounds.

Abstract: The present invention relates to a process for preparing a transition metal compound. Specifically, the present invention relates to a process for preparing a transition metal compound having a non-bridged, asymmetric biscyclopentadienyl group that can be used in the preparation of a catalyst for olefin polymerization. The process for preparing a transition metal compound according to an embodiment of the present invention is capable of conveniently preparing a transition metal compound having a non-bridged, asymmetric biscyclopentadienyl group.

Abstract: Methods for activating a secondary battery are provided, as well as methods for manufacturing a secondary battery, which include: providing a secondary battery including an electrode assembly and an electrolyte solution in a battery case, pre-aging the secondary battery at room temperature to provide a pre-aged secondary battery; initially charging the pre-aged secondary battery to provide an initially-charged secondary battery; aging the initially-charged secondary battery at room temperature to provide a room-temperature-aged secondary battery; fully charging the room-temperature-aged secondary battery to a voltage of 4.4V or more to provide a fully-charged secondary battery; and degassing the charged secondary battery to remove gas inside the fully-charged secondary battery. According to these methods, it is possible to increase the remaining amount of an electrolyte solution inside an electrode by fully charging a secondary battery.

Abstract: The present invention relates to a transition metal compound for a catalyst for olefin polymerization and to a catalyst for olefin polymerization comprising the same. Specifically, the present invention relates to a transition metal compound for a catalyst for olefin polymerization in which an allyltrimethylsilane substituent is introduced into the carbon-bridged cyclopentadienyl fluorenyl backbone and to a catalyst for olefin polymerization comprising the same.

Abstract: A case for a secondary battery, a secondary battery, and a battery module are provided. Because an uneven part is provided in each of an upper case and a lower case of the secondary battery the upper case and the lower case may be coupled to each other without being misaligned in a process of manufacturing the prismatic type secondary battery.

Abstract: A method for manufacturing an electrode assembly includes forming each of a negative electrode, a separator, and a positive electrode so as to have a shape having a hole; laminating the negative electrode, the separator, and the positive electrode to manufacture a unit cell; laminating at least two unit cells to form a laminate; folding a folding separator to cover an entire surface of the laminate to wrap an outside of the laminate; removing a portion of a space forming part that is a portion of the folding separator surrounding a space formed by the aligned holes when the folding separator is folded to wrap the laminate; and bonding surplus parts that are portions of the folding separator to each other after the portion of the space forming part is removed so as to finish the folding separator to cover an exposed surface of the laminate is provided.

Abstract: Apparatus and method for efficient graphics processing including ray tracing. For example, one embodiment of a graphics processor comprises: execution hardware logic to execute graphics commands and render images; an interface to couple functional units of the execution hardware logic to a tiled resource; and a tiled resource manager to manage access by the functional units to the tiled resource, a functional unit of the execution hardware logic to generate a request with a hash identifier (ID) to request access to a portion of the tiled resource, wherein the tiled resource manager is to determine whether a portion of the tiled resource identified by the hash ID exists, and if not, to allocate a new portion of the tiled resource and associate the new portion with the hash ID.

Abstract: Apparatus and method for efficient graphics processing including ray tracing. For example, one embodiment of a graphics processor comprises: execution hardware logic to execute graphics commands and render images; an interface to couple functional units of the execution hardware logic to a tiled resource; and a tiled resource manager to manage access by the functional units to the tiled resource, a functional unit of the execution hardware logic to generate a request with a hash identifier (ID) to request access to a portion of the tiled resource, wherein the tiled resource manager is to determine whether a portion of the tiled resource identified by the hash ID exists, and if not, to allocate a new portion of the tiled resource and associate the new portion with the hash ID.

Abstract: The present invention relates to a composition containing extracellular vesicles derived from plant juice, wherein the extracellular vesicles have excellent skin condition-improving effects such as skin whitening, moisturizing and wrinkle reducing effects and exhibits an excellent effect of preventing hair loss by promotion of hair growth and regrowth, and the like.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating cancer, comprising, as an active ingredient, miRNA comprising a seed sequence represented by the nucleotide sequence of any one of SEQ ID NOs: 1 to 3; an expression vector comprising the miRNA; or a transformant transformed with the expression vector. The miRNA provided by the present invention can effectively inhibit growth of cancer cells as well as cancer stem cells so that cancer is prevented and/or treated; and, furthermore, the miRNA can also prevent drug resistance, metastasis, and recurrence of cancer.

Abstract: A cargo screen unit includes: a cargo screen having a cover sheet rolled out from a rolled-in and wound state so as to cover a cargo; and a parcel tray having an inner space for receiving an edge portion of the cargo screen, and having a receiving shutter, which communicates the inner space and an outer space by a downward movement and blocks the inner space and the outer space by an upward movement.