Abstract: Provided are an apparatus and a method for refining pyrolysis oil in which a dechlorination reaction is performed under a first hydrotreating catalyst. Hydrogen chloride as a by-product is removed, and then a denitrification reaction is performed under a second hydrotreating catalyst, thereby preventing production of an ammonium salt (NH4Cl), and providing refined oil. It is excellent in prevention of corrosion of a reactor, improvement of durability, occurrence of differential pressure, process efficiency, has very low contents of impurities such as chlorine, nitrogen, and metal and olefin, and has excellent quality.

Abstract: The present invention relates to a method for producing an ethylene-based copolymer, and more particularly, to a method for producing an ethylene-based copolymer capable of increasing process efficiency by preventing plugging and corrosion of a facility. The method for producing an ethylene-based copolymer includes a producing mode and a washing mode of which one is selectively performed. The producing mode includes: a) hyper-compressing primary compressed ethylene, and a mixture including a carboxylic acid-containing comonomer and a polar solvent to produce a compressed material; b) reacting the compressed material to produce a reaction product including an ethylene-based copolymer; and c) separating and recovering unreacted residues from the reaction product and introducing the unreacted residues into the mixture of step a). The washing mode includes: re-supplying the compressed material produced in step a) to step a) as a mixture, without performing step b).

Abstract: Disclosed are a recombinant acid-resistant yeast having improved lactic-acid-producing ability and a method of preparing lactic acid using the same. When producing lactic acid using the recombinant acid-resistant yeast according to the present invention, not only lactic-acid fermentation can be performed with lactic-acid-producing ability similar to that of bacterial fermentation using a remarkably smaller amount of a neutralizing agent than in the case of conventional bacterial fermentation, but also the production of ethanol and glycerol which are byproducts can be reduced. Thus, fermentation costs can be greatly reduced and the cost of subsequent purification processes can be reduced.

Abstract: The present invention provides a uniform flow control agitation device for electroplating, which involves the rotation of one or two flow-uniformization plates within an electroplating tank. This design effectively eliminates fluctuations in the electroplating solution during the electroplating process, thereby preventing bubbles from forming on the surface of the wafer. Simultaneously, the rotation of the flow-uniformization plates promotes the movement of ions in the electroplating solution, resulting in greater uniformity in the electrodeposit coating on the wafer's surface.

Abstract: The present invention provides a device for treating dementia, including: a plurality of ultrasound probes; an ultrasound transducer arranged in each of the ultrasound probes and configured to propagate unfocused ultrasound energy to a brain; and an ultrasound generator connected to each of the ultrasound probes.

Abstract: Provided is an optical multilayer structure including a shatterproof layer including a polyimide resin including a siloxane structure and an adhesion promoting layer. Since the adhesion promoting layer and the shatterproof layer of the optical multilayer structure according to one implementation are connected by a chemical bond (imide bond), interlayer adhesiveness is high and durability is excellent. In addition, the optical multilayer structure according to one implementation has excellent heat resistance, so that curling is reduced to minimize substrate bending, has high surface hardness, so that mechanical properties are excellent, and has a low haze and is transparent, so that optical properties are excellent.

Abstract: Disclosed is a process for converting methane into value-added compounds. In this process, a gas mixture containing hydrogen as well as high-concentration acetylene formed through methane pyrolysis (e.g. non-oxidative coupling of methane) is selectively hydrogenated in the presence of a bimetallic supported catalyst. This process obtains ethylene from acetylene in the gas mixture while unreacted methane and hydrogen are recovered as byproducts and/or additionally recycled.

Abstract: A carrier is provided, including: a mounting rod including an inclined surface; a frame body, including a connecting seat which includes an upper plate connected to the two side plates and two side plates rotatably connected to the mounting rod, a stand rod and two lateral rods, the stand rod and the two lateral rods being connected to the connecting seat, wherein when located in a first position, the connecting seat is parallel to the mounting rod, and when the connecting seat is located in a second position, the inclined surface is abutted against the upper plate; a first pin, wherein when the connecting seat is located in the first position, the first pin is inserted in the mounting rod and at least one of the two side plates so that the connecting seat is positioned in the first position and non-rotatable toward the second position.

Abstract: A carrier is provided, including: a mounting rod, configured to be connected to a vehicle; a frame body, including a connecting seat rotatably connected to the mounting rod, a stand rod and two lateral rods, the stand rod and the two lateral rods being connected to the connecting seat, the connecting seat being rotatable between a first position and a second position, wherein when located in the first position, the connecting seat and the mounting rod being stacked; a first quick-release mechanism, including a first elastic abutting portion, the first elastic abutting portion being disposed on one of the mounting rod and the connecting seat, the first elastic abutting portion being blockably abuttable against the other of the mounting rod and the connecting seat so that the connecting seat is positioned in the first position and non-rotatable toward the second position.

Abstract: A carrying rack connecting device is provided, including a connection rod and a connection assembly. The connection rod is configured to be connected to a mounting rod. The connection assembly has a base, an urging member and an operation member. The base is positioned inside the connection rod. The base has an operation space. The urging member is movably disposed within the operation space. The urging member has a first abutting portion. The operation member is disposed through the operation space and connected with the base. The operation member has a thread portion and an enlarged portion. The thread portion is screwed to the base. The enlarged portion has a second abutting portion. The second abutting portion is configured to push the first abutting portion.

Abstract: Proposed is a process of producing a high-quality lube base oil using a refined oil fraction obtained from waste lubricant as a feedstock. The process includes purifying waste lubricant to obtain a refined oil fraction, pretreating the refined oil fraction, and blending the pretreated refined oil fraction with unconverted oil (UCO), before or after vacuum distillation and catalytic dewaxing of the unconverted oil, or between the vacuum distillation and the catalytic dewaxing of the unconverted oil.

Abstract: The present invention relates to a diamine compound, a method of preparing the same, and a composition containing the same. The diamine compound of the present invention may be very usefully used as a monomer used to produce a polyimide film having excellent heat resistance and improved transparency and coefficient of thermal expansion.

Abstract: Provided is a method of preparing a composition for forming a polyimide film which may significantly improve dispersibility of a pigment. Specifically, the method includes preparing a polyamic acid resin in the presence of a pigment dispersion including a blue-based inorganic pigment and a dispersing agent. In addition, an average particle size of the inorganic pigment in the pigment dispersion may be 10 to 100 nm.

Abstract: The present invention relates to a process of converting carbon dioxide using a combination of a carbon dioxide mineralization and the metabolism of sulfur-oxidizing microorganisms. According to the process, a carbonate produced in the carbon dioxide mineralization reaction can be converted to a useful substance without supplying an external additional energy source (light, electrical energy, etc.) and mineral resources (metal ions). In addition, the process can be continuously performed by recycling metal ions necessary for the carbon dioxide mineralization reaction.

Abstract: The present invention relates to a new window cover film protecting a flexible display panel. Specifically, provided is a window cover film protecting a surface of a display device, the window cover film including a protective film formed on a base layer or a hard coating layer of a hard coating film having the base layer and the hard coating layer, and having no problem that the window cover film cannot be used as a display window cover film because a part of the protective film is not peeled off due to static electricity generated in the protective film, the base layer, or the hard coating layer when the protective film is peeled off, and the protective film remains on the base layer or a hard coating layer or the hard coating layer is partially or entirely peeled off.