Abstract: The present invention provides a method for preparing porous organic/inorganic composite powder which includes attaching inorganic oxide nanoparticles in a multi-layer form by repeating steps of attaching polyphenol to porous polymethyl methacrylate (PMMA) microspheres and attaching inorganic oxide nanoparticles to the porous polymethyl methacrylate (PMMA) microspheres to which polyphenol is attached, and a cosmetic composition including the porous organic/inorganic composite powder.

Abstract: A method of preparing a vesicle for skin absorption enhancement, a vesicle prepared using the method, and a cosmetic composition including the vesicle are provided. The vesicle preparation method may provide a skin absorption enhancement effect and may be used to prepare vesicles with improved formulation stability. The vesicle prepared using the method may be safe without skin irritation and have an improved skin absorption effect due to the use of a ceramide as a skin absorption enhancer, and may have improved formulation stability due to use of a nonionic surfactant and a phospholipid. Accordingly, the vesicle may be used in cosmetic compositions for enhancing skin absorption of bioactive ingredients such as functional ingredients.

Abstract: The present disclosure relates to a cosmetic composition having piezoelectricity. More particularly, the present disclosure relates to a piezoelectric cosmetic composition which includes a piezoelectric material capable of generating microcurrent upon the application of pressure as an active ingredient. According to the present disclosure, when the piezoelectric composition is applied to and massaged on the skin, it is possible to maximize an effect of skin care, including an effect of improving skin elasticity, by generating microcurrent.

Abstract: The present invention provides a method for preparing porous organic/inorganic composite powder which includes attaching inorganic oxide nanoparticles in a multi-layer form by repeating steps of attaching polyphenol to porous polymethyl methacrylate (PMMA) microspheres and attaching inorganic oxide nanoparticles to the porous polymethyl methacrylate (PMMA) microspheres to which polyphenol is attached, and a cosmetic composition including the porous organic/inorganic composite powder.

Abstract: Provided is a black box apparatus for analyzing a cause of arc interruption including: a controller which is installed on a power supply line and receives data detected from a CT detecting a current, a ZCT detecting a short circuit, and a voltage detector detecting a voltage; and an interruption unit which interrupts a power supply by receive a signal from the controller to operate a switch, in which the controller includes a calculation unit calculating data detected from the CT, the ZCT, and the voltage detector; a determination unit determining whether the arc occurs using the result of the calculation unit; and a storage unit storing data up to a predetermined time before the operation when the interruption unit operates to interrupt the power supply. Therefore, it is possible to accurately analyze reproduction for preventing occurrence of electrical fires and a cause of the arc interruption and determine an unstable condition of a power supply device which instantaneously occurs.

Abstract: A method for preparing a liquid crystal emulsion includes: a) mixing, warming and dissolving intercellular lipid ingredients, non-polyoxyethylene (POE) based non-ionic surfactant, higher fatty alcohol, oil and wax to provide an oil phase part; b) mixing, warming and dissolving water, polyol and the other aqueous phase ingredients to provide an aqueous phase part; c) adding the oil phase part to the aqueous phase part, followed by agitation; d) introducing a viscosity modifier to the mixture solution under agitation; e) subjecting the mixture solution to rapid cooling under vacuum while carrying out debubbling under vacuum; and f) filtering the mixture solution through a filtering paper or filtering cloth. Provided is a stable liquid crystal emulsion having a multilayer lamellar structure including a large amount of intercellular lipid ingredients through a process using rapid cooling. The liquid crystal emulsion has an oil phase part and an aqueous phase part.

Abstract: An arc detection apparatus is provided. The arc detection apparatus detects an arc using an electrical energy, eliminates the possibility of a false arc detection caused by noise due to a power environment, increases accuracy of arc detection, and prevents fires that may occur in a home or an industrial site due to an arc occurrence.

Abstract: A method for preparing macroporous polymethyl methacrylate (PMMA) particles includes the steps of: (a) dissolving a polymethyl methacrylate polymer and Pluronic polymer into an organic solvent; (b) introducing the mixed solution of step (a) to an aqueous solution containing a surfactant to carry out emulsion polymerization; (c) heating the resultant product of step (b) to allow evaporation of the organic solvent; and (d) washing and drying the porous polymethyl methacrylate particles remaining after the evaporation.

Abstract: Provided is a method for preparing a nanoemulsion, including mixing an oil phase part (A) containing a ceramide or derivative thereof, cholesterol, non-ionic surfactant, phospholipid and a polyol, a perfume part (B) containing a perfume ingredient, non-ionic surfactant and an alcohol, and an aqueous phase part (C) containing the other water-soluble active ingredients. When a nanoemulsion is obtained by the method, it is possible to reduce processing time and cost since a non-ionic surfactant is used without a high-pressure emulsification process, and the obtained nanoemulsion is more stable against a change in temperature than the other solubilized formulations.

Abstract: The present invention provides a fitting mechanism capable of distributing pressure applied on an outermost layer of plastic, and contributing to cooperation and complementary reaction between a fitting body and a ferrule body under severe temperature change. A fitting mechanism according to the present invention comprises a fitting body formed of metal, and a ferrule body formed of metal, wherein the fitting body is coupled to the ferrule body by fastening the third threaded portion of the ferrule body with the second threaded portion of the fitting body, and the fitting body slope surface is impinged onto the ferrule body slope surface forming a fluid tight contact and causing the ferrule body deformation portion to be deflected inwardly, tightened around and penetrate into outermost layer of plastic, and the outermost layer of plastic of the leading end of the multilayer composite pipe impinges onto coupling end portion.

Abstract: The present invention provides a fitting mechanism capable of distributing pressure applied on an outermost layer of plastic, and contributing to cooperation and complementary reaction between a fitting body and a ferrule body under severe temperature change. A fitting mechanism according to the present invention comprises a fitting body formed of metal, and a ferrule body formed of metal, wherein the fitting body is coupled to the ferrule body by fastening the third threaded portion of the ferrule body with the second threaded portion of the fitting body, and the fitting body slope surface is impinged onto the ferrule body slope surface forming a fluid tight contact and causing the ferrule body deformation portion to be deflected inwardly, tightened around and penetrate into outermost layer of plastic, and the outermost layer of plastic of the leading end of the multilayer composite pipe impinges onto coupling end portion.

Abstract: A method for preparing a liquid crystal emulsion includes: a) mixing, warming and dissolving intercellular lipid ingredients, non-polyoxyethylene (POE) based non-ionic surfactant, higher fatty alcohol, oil and wax to provide an oil phase part; b) mixing, warming and dissolving water, polyol and the other aqueous phase ingredients to provide an aqueous phase part; c) adding the oil phase part to the aqueous phase part, followed by agitation; d) introducing a viscosity modifier to the mixture solution under agitation; e) subjecting the mixture solution to rapid cooling under vacuum while carrying out debubbling under vacuum; and f) filtering the mixture solution through a filtering paper or filtering cloth. Provided is a stable liquid crystal emulsion having a multilayer lamellar structure including a large amount of intercellular lipid ingredients through a process using rapid cooling. The liquid crystal emulsion has an oil phase part and an aqueous phase part.

Abstract: Provided is a method for preparing a nanoemulsion, including mixing an oil phase part (A) containing a ceramide or derivative thereof, cholesterol, non-ionic surfactant, phospholipid and a polyol, a perfume part (B) containing a perfume ingredient, non-ionic surfactant and an alcohol, and an aqueous phase part (C) containing the other water-soluble active ingredients. When a nanoemulsion is obtained by the method, it is possible to reduce processing time and cost since a non-ionic surfactant is used without a high-pressure emulsification process, and the obtained nanoemulsion is more stable against a change in temperature than the other solubilized formulations.

Abstract: A method for preparing macroporous polymethyl methacrylate (PMMA) particles includes the steps of: (a) dissolving a polymethyl methacrylate polymer and Pluronic polymer into an organic solvent; (b) introducing the mixed solution of step (a) to an aqueous solution containing a surfactant to carry out emulsion polymerization; (c) heating the resultant product of step (b) to allow evaporation of the organic solvent; and (d) washing and drying the porous polymethyl methacrylate particles remaining after the evaporation.

Abstract: The present invention relates to a pipe connection device and a pipe connection method, wherein binding force is maintained by a polymer bonder for coupling with a metal material through ion substitution by moltenization between a fitting cover through hole of both ends of a metal material and a coupling pipe. Therefore, a connection of metallic pipes and a mutual coupling construction of plastic composite pipes can be readily carried out by using the polymer bonder which has a low cost and is coupled with the metal material through ion substitution. Additionally, a use under a high pressure condition is possible.

Abstract: A composite electric circuit breaker, and method thereof, is configured to detect signals regarding arc faults, overcurrent, and earth leakage. Arcs and electric currents are detected by a current transformer and earth leakage is detected by a zero phase current transformer. A variation of electric current, the number of arcs which are generated per a unit time, a present electric current value, and electric current earth leakage are combined to judge whether arc faults occur to then interrupt an electric power supply. Temperature is measured on a printed circuit board, and if temperature rise occurs, the electric power supply is interrupted, and an interruption cause is displayed. Electric accidents and occurrence of fires are prevented simultaneously and more accurately. The interruption causes can be confirmed, analyzed and externally monitored through a network, to thus maximize efficiency of electric management.

Abstract: An arc fault circuit interrupter (AFCI) device prevents malfunction of an electric circuit and checks the state of the circuit and connection state of lines. One of a phase conductor line and a neutral conductor line is wound around a transformer which converts a current difference flowing in the AC line into voltage to detect whether an arc fault occurs, and a voltage induced by the wound line is rectified into direct-current and is converted into constant voltage to obtain power for the AFCI. An arc wave generator includes a rectifier to generate a rectified signal; a drop resistor which drops the voltage of the rectified signal to generate a voltage-dropped signal; and a mono-stable multivibrator which adjusts a voltage level and a pulse width of the voltage-dropped signal and generates a pulse signal that is used to generate a false arc for testing the AFCI.

Abstract: A power module for energy recovery and sustain of a plasma display panel is disclosed. The power module includes a first high-voltage integrated circuit which is of a single type, a first switching element for receiving an output from the first high-voltage integrated circuit, and performing a switching operation in response to the output received from the first high-voltage integrated circuit, a first diode connected to one terminal of the first switching element, a second high-voltage integrated circuit which is of a single type, and is arranged symmetrically with the first high-voltage integrated circuit, a second switching element for receiving an output from the second high-voltage integrated circuit, and performing a switching operation in response to the output received from the second high-voltage integrated circuit, and a second diode connected to one terminal of the second switching element.

Abstract: A composite electric circuit breaker, and method thereof, is configured to detect signals regarding arc faults, overcurrent, and earth leakage. Arcs and electric currents are detected by a current transformer and earth leakage is detected by a zero phase current transformer. A variation of electric current, the number of arcs which are generated per a unit time, a present electric current value, and electric current earth leakage are combined to judge whether arc faults occur to then interrupt an electric power supply. Temperature is measured on a printed circuit board, and if temperature rise occurs, the electric power supply is interrupted, and an interruption cause is displayed. Electric accidents and occurrence of fires are prevented simultaneously and more accurately. The interruption causes can be confirmed, analyzed and externally monitored through a network, to thus maximize efficiency of electric management.

Abstract: An Insulated Gate Bipolar Transistor (IGBT) fault protection system is provided. The fault protection system includes a GVPA, a gate voltage clamper, and a soft-off unit. The GVPA analyzes a gate voltage pattern of an IGBT to determine whether or not a fault has occurred. The gate voltage clamper prevents an increase in a gate voltage of the IGBT according to an output signal that the GVPA outputs when a fault has occurred. The soft-off unit softly turns off the IGBT according to an output signal that the GVPA outputs when a fault has occurred.