Abstract: An ultrasonic atomizer for maintaining a constant temperature of an ultrasonic vibration generating unit by decreasing a temperature at the periphery of the ultrasonic vibration generating unit even under an environment in which the ultrasonic vibration generating unit is exposed to a high temperature is provided. The ultrasonic atomizer includes: an ultrasonic vibration generating unit which generates ultrasonic waves and atomizes a spray material; a nozzle unit; a heat exchange unit which cools heat generated from the ultrasonic vibration generating unit; and a housing which has heat exchange chambers, where the heat exchange chambers include: a vortex chamber which is positioned in the housing at the periphery of the ultrasonic vibration generating unit and guides a vortex flow; and a thermal insulation chamber which surrounds the vortex chamber and has a separation wall which abuts the vortex chamber, and includes an internal thermal insulation space.

Abstract: An ultrasonic atomizer for maintaining a constant temperature of an ultrasonic vibration generating unit by decreasing a temperature at the periphery of the ultrasonic vibration generating unit even under an environment in which the ultrasonic vibration generating unit is exposed to a high temperature is provided. The ultrasonic atomizer includes: an ultrasonic vibration generating unit which generates ultrasonic waves and atomizes a spray material; a nozzle unit; a housing; and a heat exchange unit which surrounds the ultrasonic vibration generating unit, includes a separation wall which divides the heat exchange unit into heat exchange chambers, and cools heat generated from the ultrasonic vibration generating unit, in which the heat exchange chambers include: a heating chamber; and a cooling chamber which surrounds the heating chamber, and includes a cooling space by being isolated with the heat exchange unit abutting the heating chamber between the cooling chamber and the heating chamber.

Abstract: Provided are a resin composition for an optical film including an alkyl(meth)acrylate unit, a benzyl(meth)acrylate unit, a (meth)acrylic acid unit, and a unit expressed by Chemical Formula I, an optical film, a polarizing plate, and an image display device using the resin composition.

Abstract: An ultrasonic atomizer for maintaining a constant temperature of an ultrasonic vibration generating unit by decreasing a temperature at the periphery of the ultrasonic vibration generating unit even under an environment in which the ultrasonic vibration generating unit is exposed to a high temperature is provided. The ultrasonic atomizer includes: an ultrasonic vibration generating unit which generates ultrasonic waves and atomizes a spray material; a nozzle unit; a housing; and a heat exchange unit which surrounds the ultrasonic vibration generating unit, includes a separation wall which divides the heat exchange unit into heat exchange chambers, and cools heat generated from the ultrasonic vibration generating unit, in which the heat exchange chambers include: a heating chamber; and a cooling chamber which surrounds the heating chamber, and includes a cooling space by being isolated with the heat exchange unit abutting the heating chamber between the cooling chamber and the heating chamber.

Abstract: An ultrasonic atomizer for maintaining a constant temperature of an ultrasonic vibration generating unit by decreasing a temperature at the periphery of the ultrasonic vibration generating unit even under an environment in which the ultrasonic vibration generating unit is exposed to a high temperature is provided. The ultrasonic atomizer includes: an ultrasonic vibration generating unit which generates ultrasonic waves and atomizes a spray material; a nozzle unit a heat exchange unit which cools heat generated from the ultrasonic vibration generating unit; and a housing which has heat exchange chambers, where the heat exchange chambers include: a vortex chamber which is positioned in the housing at the periphery of the ultrasonic vibration generating unit and guides a vortex flow; and a thermal insulation chamber which surrounds the vortex chamber and has a separation wall which abuts the vortex chamber, and includes an internal thermal insulation space.

Abstract: Provided is a method of preparing a resin composition for an optical film. The method includes forming a four-component copolymer by reacting an alkyl(meth)acrylate-based monomer, an acrylate-based monomer containing a benzene ring, and a (meth)acrylic acid monomer by using a continuous bulk polymerization method; and forming a resin composition for an optical film by removing unreacted monomer and solvent from a reaction product in a devolatilizer.

Abstract: A controlled-release composition and controlled-release microspheres containing an exendin as an active ingredient, and a method of preparing the same are provided. More specifically, a controlled-release composition containing an exendin as an active ingredient, a biodegradable polymer with a specific viscosity, and coating materials, having high bioavailability and showing sustained release of the active ingredient in an effective concentration for a certain period without an excessive initial burst of the active ingredient; controlled-release microspheres containing a core including an exendin as an active ingredient and a biodegradable polymer, and a coating layer coating the core; and a method of preparing controlled-release microspheres including the steps of mixing an exendin, a biodegradable polymer, and a solvent, removing the solvent from the mixture to prepare hardened microspheres, and coating the hardened microspheres to form a coating layer on the surface of each microsphere, are provided.

Abstract: The present invention provides an antiobesity composition comprising extract of Melissa as an active ingredient, use of Melissa extract, and a method for suppressing obesity using the composition.

Abstract: Provided are a resin composition and an optical film formed by using the same, and more particularly, a resin composition including 85 to 95 parts by weight of a matrix copolymer resin including an alkyl(meth)acrylate-based unit, an acryl-based unit containing a benzene ring, and a (meth)acrylic acid unit, and 5 to 15 parts by weight of a polymer resin having a molecular weight range of 150,000 to 1,000,000 and an optical film formed by using the composition. A resin composition according to the present invention may provide a protective film for a polarizing plate having excellent heat resistance and toughness as well as excellent optical properties, and thus, an optical film formed by using the resin composition of the present invention may be used in information electronic devices such as display devices for various applications.

Abstract: The present invention relates to a resin composition for an optical film comprising a copolymer which includes an alkyl (meth)acrylate unit, a (meth)acrylate unit having a benzene ring, and a (meth)acrylic acid unit, wherein a content of a residual monomer is less than 2000 ppm in the resin composition and an optical film using the same.

Abstract: Provided are a resin composition for an optical film including an alkyl(meth)acrylate unit, a benzyl(meth)acrylate unit, a (meth)acrylic acid unit, and a unit expressed by Chemical Formula I, an optical film, a polarizing plate, and an image display device using the resin composition.

Abstract: Provided is a method of preparing a resin composition for an optical film. The method includes forming a four-component copolymer by reacting an alkyl(meth)acrylate-based monomer, an acrylate-based monomer containing a benzene ring, and a (meth)acrylic acid monomer by using a continuous bulk polymerization method; and forming a resin composition for an optical film by removing unreacted monomer and solvent from a reaction product in a devolatilizer.

Abstract: Provided are a resin composition and an optical film formed by using the same, and more particularly, a resin composition including 85 to 95 parts by weight of a matrix copolymer resin including an alkyl(meth)acrylate-based unit, an acryl-based unit containing a benzene ring, and a (meth)acrylic acid unit, and 5 to 15 parts by weight of a polymer resin having a molecular weight range of 150,000 to 1,000,000 and an optical film formed by using the composition. A resin composition according to the present invention may provide a protective film for a polarizing plate having excellent heat resistance and toughness as well as excellent optical properties, and thus, an optical film formed by using the resin composition of the present invention may be used in information electronic devices such as display devices for various applications.

Abstract: A controlled-release composition and controlled-release microspheres containing an exendin as an active ingredient, and a method of preparing the same are provided. More specifically, a controlled-release composition containing an exendin as an active ingredient, a biodegradable polymer with a specific viscosity, and coating materials, having high bioavailability and showing sustained release of the active ingredient in an effective concentration for a certain period without an excessive initial burst of the active ingredient; controlled-release microspheres containing a core including an exendin as an active ingredient and a biodegradable polymer, and a coating layer coating the core; and a method of preparing controlled-release microspheres including the steps of mixing an exendin, a biodegradable polymer, and a solvent, removing the solvent from the mixture to prepare hardened microspheres, and coating the hardened microspheres to form a coating layer on the surface of each microsphere, are provided.

Abstract: The present invention provides an antiobesity composition comprising extract of Melissa as an active ingredient, use of Melissa extract, and a method for suppressing obesity using the composition. Also, the present invention provides an antiobesity composition comprising extract of Melissa and extract of Mori Folium as active ingredients, use of a mixture of Melissa extract and Mori Folium extract, and a method for suppressing obesity using the composition. Further, the present invention provides an antiobesity composition comprising extract of Melissa, extract of Artemisia and extract of Mori Folium as active ingredients, use of a mixture of Melissa extract, Artemisia extract and Mori Folium extract, and a method for suppressing obesity using the composition.

Abstract: A local area communication network in a distance of several to several tens of meters is disclosed. The local area communication network includes a personal area network (PAN) coordinator capable of performing sound and electric communications and controlling communication flow in the network, and at least one end device connected to the PAN coordinator through a sound and/or electric communication channel. The PAN coordinator includes a conversion means for performing mutual conversion between a sound communication protocol and an electric communication protocol, and can be connected to another external communication network.