Abstract: The present disclosure relates to a smart mirror, a controlling method thereof, and a system for purchasing a cosmetic. According to an aspect of the present disclosure, a smart mirror comprising: a terminal unit including a sensor capable of recognizing a user; a lighting unit including an LED capable of irradiating light to the user; and a control module capable of controlling at least one of the amount of light and the color temperature of the light irradiated from the lighting unit so that the skin of the user represents the light amount and the color temperature in a preset range by the light irradiated from the lighting unit may be provided.

Abstract: One aspect relates to a compound of Formula 1, a method of preparing an intermediate thereof, a cap analog including the same, an mRNA 5?-capped with the cap analog, a method of preparing mRNA using the cap analog, use for using the cap analog in preparing mRNA, and a pharmaceutical composition for expressing a target peptide or protein, including the mRNA 5?-capped with the cap analog, and the like.

Abstract: An embodiment relates to a diamine compound, a polymer including a structural unit derived therefrom, a composition for forming a polyimide film including the polymer, and a polyimide film prepared by using the composition. Specifically, the diamine compound according to an embodiment may be very usefully used as a monomer for preparing a polyimide film that is colorless and has an improved mechanical strength.

Abstract: A manufacturing method of a window includes: radiating a laser to a glass; immersing a laser-irradiated glass in a KOH solution to form a groove in the glass and to perform a primary reinforcement on the glass; masking the groove of a primarily reinforced glass; and performing a secondary reinforcement on a masked glass.

Abstract: A razor cartridge is proposed. The razor cartridge may include at least one razor blade having a cutting edge, a blade housing for accommodating the at least one razor blade in a longitudinal direction, and a plurality of clips for retaining the at least one razor blade in the blade housing on both sides of the longitudinal direction. The at least one razor blade may have a positive exposure value when one end of the cutting edge is located at an upper portion in the height direction and a negative exposure value when one end of the cutting edge is located at a lower portion in the height direction with respect to a virtual plane. With respect to a clip plane, the side portion exposure value of each of the at least one razor blade may be greater than the central portion exposure value.

Abstract: An aerogel composite maintains an excellent level of heat insulation even when compressed and deformed. The aerogel composite can be included in batteries, electronic devices, automobiles, industrial equipment, structures, or the like, as a heat insulation material.

Abstract: An aerogel composite having an excellent level of thermal insulation even when compressed and deformed under application of pressure resulting from various causes is provided. The aerogel composite can be used as a thermal insulation material for batteries, electronic devices, automobiles, industrial equipment, structures, or the like.

Abstract: An aerogel composite maintains an excellent level of heat insulation properties even when compressed and deformed by being applied with a pressure due to various causes. when applied as a heat insulation material for batteries, electronic devices, automobiles, industrial equipment, structures, or the like.

Abstract: Provided is a method for recycling supercritical waste liquid and a method for producing a silica aerogel blanket capable of reducing the production costs and preventing the deterioration in thermal insulation performance of a silica aerogel blanket, the method including adding sulfuric acid to supercritical waste liquid to remove ammonium ions in the form of ammonium sulfate salt, the ammonium ions which are present in the supercritical waste liquid, and reusing supercritical waste liquid from which the ammonium ions are removed.

Abstract: A refrigerant composition according to embodiments of the present disclosure includes trifluoroiodomethane (R-131I), 1,1-difluoroethane (R-152a) and difluoromethane (R-32), wherein a content of the trifluoroiodomethane (R-131I) may be 20 to 60 wt. % based on a total weight of the refrigerant composition. Accordingly, environmental pollution caused by the refrigerant composition may be suppressed, and the cooling performance of the refrigerant composition may be improved.

Abstract: Disclosed is a method of manufacturing a negative electrode, wherein a negative electrode structure is electrochemically charged while being pressed with a plurality of pre-lithiation rolls in performing pre-lithiation of the negative electrode structure by a roll-to-roll method, and here, the pressing pressures of the plurality of pre-lithiation rolls are increased in a movement direction of the negative electrode structure. Since the pressing pressures are increased in the movement direction of the negative electrode structure, volume expansion, structural deformation, and damage to an active material due to the pre-lithiation may be prevented, and at the same time, the pre-lithiation may be performed uniformly, and thus it is preferable for improving lifespan characteristics of a negative electrode.

Abstract: A method for manufacturing negative electrode active material including the steps of manufacturing a pellet by extruding a mixture of lithium metal and negative electrode active material, immersing the pellet in an electrolyte comprising an SEI film-forming additive, and manufacturing the pellet into powder form by grinding, washing and drying same. A negative electrode and a lithium rechargeable battery manufactured using the lithium-active material powder has an SEI film that is uniformly formed by having lithium uniformly doped in the negative electrode. During initial charging, the SEI film is stably formed, and thus an effect is achieved whereby the initial efficiency of the lithium rechargeable battery is improved.

Abstract: A substrate treating apparatus and a substrate treating system including the same are disclosed, in which the number of heat treatment chambers such as anneal chambers may be varied. The substrate treating apparatus includes a first chamber heat-treating a substrate; and a second chamber treating the substrate in another way different from heat-treatment, wherein the number of the first chambers is varied depending on the number of the second chambers that need heat treatment for the substrate.

Abstract: A method of producing a negative electrode for a lithium secondary battery. The production method of the present invention includes a process of charging the negative electrode at a low current during pre-lithiation and a process of aging the negative electrode after the pre-lithiation for a sufficient time, thereby producing a negative electrode for a lithium secondary battery having excellent cycle performance.

Abstract: The mixed refrigerant composition according to embodiments of the present disclosure includes carbon dioxide (R-744), trifluoroiodomethane (R-13I1), and 1,1-difluoroethane (R-152a), wherein a sum of contents of the trifluoroiodomethane (R-13I1) and the 1,1-difluoroethane (R-152a) based on a total weight of the mixed refrigerant composition may be 60 wt. % or more and less than 100 wt. %. Accordingly, environmental pollution caused by the mixed refrigerant composition may be suppressed, and the cooling performance of the mixed refrigerant composition may be improved.

Abstract: The present invention relates to a composition for preventing or treating inflammatory or autoimmune skin disease. The composition of the present invention may be useful as a fundamental therapeutic composition that is able to efficiently ameliorate skin tissue damage caused by inflammation while having a minimized impact on systemic immune activity by specifically inhibiting the activity of skin-specific T cells. The present invention also provides a screening method capable of quickly and highly reliably identifying promising therapeutic candidates that are able to alleviate various autoimmune and inflammatory damages occurring in skin tissue by inhibiting the activity of skin-specific T cells.

Abstract: The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and forming a coating layer including a lithium-based alloy on the positive electrode material mixture layer, or forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector.

Abstract: A negative electrode for a lithium secondary battery, a negative electrode in which the negative electrode is pre-lithiated, a method of manufacturing the negative electrode, and a lithium secondary battery including the negative electrode. The pre-lithiated negative electrode may increase the capacity and improve the electrochemical performance of a lithium secondary battery by securing the initial reversibility of a negative electrode.