Abstract: Disclosed are a novel organic compound, and an organic electroluminescent element having improved characteristics, such as luminous efficiency, driving voltage, and lifespan, by containing the novel organic compound in one or more organic material layers.

Abstract: An apparatus for manufacturing a semiconductor device includes a substrate transfer unit configured to transfer a substrate, a rail unit including a driving rail extending in a first direction that the substrate transfer unit moves and a stopper on a side of the driving rail in a second direction crossing the first direction, and a lifting unit configured to move in the first direction and a third direction perpendicular to the first and second directions to remove the substrate transfer unit from the rail unit, wherein the lifting unit is configured to contact the stopper to move the stopper from a closed state to an open state.

Abstract: A method for treating a cell damage-related disease, including administering a composition to a subject in need thereof. The composition contains, as an active ingredient, one or more selected from the group consisting of stem cells genetically engineered to overexpress a carcinoembryonic antigen-related cell adhesion molecule (CEACAM) family protein, cells differentiated from the stem cells, and components derived from the stem cells.

Abstract: Provided is a method for preparing a perovskite crystal that improves the performance of a photovoltaic cell. One embodiment of the present disclosure provides a method for preparing a perovskite crystal, the method including: a step S1 of preparing a perovskite solution containing a perovskite precursor and a first polar aprotic solvent; and a step S2 of preparing a perovskite crystal by mixing the perovskite solution and an antisolvent, wherein the antisolvent includes a second polar aprotic solvent.

Abstract: The present invention may provide an organic electroluminescent device which exhibits low driving voltage as well as high efficiency by including an electron transporting layer material having an improved electron transporting ability.

Abstract: A razor assembly is proposed. The razor assembly may include a blade housing configured to receive at least one or more shaving blades in a longitudinal direction. The razor assembly may also include a connector disposed on the rear side of the blade housing and a spin housing coupled to the connector. The razor assembly may further include a fixing housing coupled to the spin housing and configured to render the spin housing to be rotatable about a first rotational axis perpendicular to the longitudinal direction. The razor assembly may further include a first restoring force-providing unit configured to provide a restoring force for restoring the spin housing to a first rest position when the spin housing is rotated about the first rotational axis relative to the fixing housing.

Abstract: The present invention relates to a method for inducing differentiation of bone marrow cells into myeloid-derived suppressor cells (MDSCs) by treating the bone marrow cells with a toll-like receptor agonist (TLR agonist) or type I interferon, or for inducing dendritic cells from the MDSCs.

Abstract: Proposed is a preparation method for single-layered MXenes capable of exfoliating a single layer of MXenes from multi-layered MXenes with a high yield. One embodiment of the present disclosure provides a preparation method for single-layer MXenes, the method includes exfoliating a single layer of MXenes from multi-layered Mxenes with a Couette-Taylor reactor (CT reactor), inducing a regular flow.

Abstract: The present disclosure relates to a composition comprising a complex that includes a curcuminoid-based compound and a steviol glycoside, or a curcuminoid-based compound and a licorice extract or a fraction thereof; and a use of the composition for enhancement of immunity according to an enhancement of activity or a cell number of immune cells and/or a use of the composition for prevention, improvement, or treatment of COVID-19. The complex including curcumin and a steviol glycoside, or a licorice extract or a fraction thereof according to the present disclosure, which are food materials that have been registered with the Ministry of Food and Drug Safety and have received the Generally Recognized as Safe (GRAS) rating from the U.S. FDA, and whose safety has already been confirmed, inhibits symptoms of COVID-19 by activating Th1 cells, CD8 T cells, and NK cells. Therefore, the complex can be provided as a food and pharmaceutical composition for preventing, improving, or treating COVID-19.

Abstract: The present disclosure relates to a dispersed metal nanoparticle synthesis method and metal nanoparticles prepared thereby. Specifically, the present disclosure relates to a method of effectively preparing a dispersed metal nanoparticle using Taylor vortex flow even when using a small amount of stabilizer or using no stabilizer, and well-dispersed nanoparticles obtained thereby.

Abstract: The present disclosure relates to a method for producing stable phase crystals using physical grinding, and specifically, to a method for efficiently and stably phase-transforming a metastable phase crystal into a stable phase crystal without using chemicals such as additives for promoting the phase transformation from the metastable phase crystal into the stable phase crystal.

Abstract: The present invention relates to a method for inducing differentiation of bone marrow cells into myeloid-derived suppressor cells (MDSCs) by treating the bone marrow cells with a toll-like receptor agonist (TLR agonist) or type I interferon, or for inducing dendritic cells from the MDSCs.

Abstract: The present invention relates to a production method of a composition that can prevent, ameliorate, or treat autoimmune diseases including allergic diseases, and the composition produced by the method. In the method, the plasmacytoid dendritic cells with tolerogenic capacity may be induced from the immature dendritic cells at a high yield using a simple and easy process. The plasmacytoid dendritic cells can effectively prevent, ameliorate or treat the autoimmune diseases.

Abstract: The present invention relates to a production method of tolerogenic plasmacytoid dendritic cells, tolerogenic plasmacytoid dendritic cells produced by the method, and, cell therapeutic agents including the same. In the method, the plasmacytoid dendritic cells with immune tolerance may be induced from the immature dendritic cells at a high yield using a simple and easy process, thereby enabling a stable supply of large amounts of tolerogenic plasmacytoid dendritic cells.

Abstract: Provided is a method for preparing metal/molybdenum oxide nanoparticles, the method including: preparing polycrystalline molybdenum oxide particles; and obtaining metal-doped molybdenum oxide nanoparticles by dissolving the polycrystalline molybdenum oxide particles and a metal precursor in a first solvent, and then performing a solvothermal reaction.

Abstract: The present invention relates to a production method of a composition that can prevent, ameliorate, or treat hypersensitivity immune diseases including allergic diseases, and the composition produced by the method. In the method, the plasmacytoid dendritic cells with tolerogenic capacity may be induced from the immature dendritic cells at a high yield using a simple and easy process. The plasmacytoid dendritic cells can effectively prevent, ameliorate or treat the hypersensitivity immune diseases.

Abstract: Provided is a method for preparing molybdenum oxide nanoparticles, including (a) preparing a precursor solution by dissolving a molybdenum salt in a first polar solvent, (b) generating an aerosol by applying ultrasonic waves to the precursor solution, and spraying the aerosol to a pre-heated reactor using a carrier gas, (c) obtaining molybdenum oxide micron-sized particles by pyrolyzing the aerosol, and (d) obtaining molybdenum oxide nanoparticles by dispersing the molybdenum oxide micron-sized particles in a second polar solvent and performing a solvothermal reduction reaction.

Abstract: Provided is a preparation method of copper nanostructures, characterized in that a copper precursor including halide is reacted with polyethyleneimine (PEI) and a reducing agent in an aqueous solution. According to this method, the copper nanostructures may be easily prepared in a sphere, wire, or plate form, and high-quality copper nanostructures may be produced with a high production yield of 90% or more. This method is also appropriate for large-scale production.

Abstract: The present invention provides a method for preparing a core-shell structured particle, the method using a continuous Couette-Taylor crystallizer in which a core reactant inlet, a shell reactant inlet, and a product outlet are sequentially formed on an outer cylinder along a flow direction of a fluid flowing in a Couette-Taylor fluid passage between the outer cylinder and an inner cylinder, wherein a core particle is primarily formed in the fluid passage by a core reactant supplied through the core reactant inlet; a shell layer is formed on a surface of the core particle to cover the core particle by a shell reactant supplied through the shell reactant inlet; and a core-shell structured particle in which the shell layer is formed on the circumference of the core particle, is discharged to the outside through the product outlet.

Abstract: The present invention relates to a method for preparing metal nanoparticles, specifically, by reducing a precursor of metal or metal oxide in an aqueous solution, wherein polyethylenimine and an additional reducing agent are used, thereby obtaining metal nanoparticles having superior properties in improved yield. According to the preparation method of the present invention, metal nanoparticles can be prepared at a higher concentration of metal precursor. Further, a short reaction time and the use of a solvent that is easy to handle, such as water, allow mass production of metal nanoparticles with high efficiency. Moreover, nanoparticles having a superior property can be prepared without a high-temperature treatment over 100° C. Accordingly, the method for preparing metal nanoparticles of the present invention may innovatively simplify the preparation processes, and may also improve the working environment. Thus, it is useful for mass production of metal nanoparticles.