Abstract:
The present invention provides an inorganic artificial marble having excellent impact strength and weather resistance. The inorganic artificial marble can be a substitute for natural stone and used as an exterior finishing material.
Abstract:
Artificial marble having a transparent amorphous pattern of the present invention comprises a base material portion and a pattern portion, wherein the transparency of the pattern portion is excellent, the specific gravity of the pattern portion is 1.60 or more, and the pattern portion is formed by curing a resin composition comprising a binder selected from the group consisting of a halogenated urethane acrylate, a halogenated epoxy acrylate and a mixture thereof, and an acrylic polymerizable monomer.
Abstract:
Artificial marble having a transparent amorphous pattern of the present invention comprises a base material portion and a pattern portion, wherein the transparency of the pattern portion is excellent, the specific gravity of the pattern portion is 1.60 or more, and the pattern portion is formed by curing a resin composition comprising a binder selected from the group consisting of a halogenated urethane acrylate, a halogenated epoxy acrylate and a mixture thereof, and an acrylic polymerizable monomer.
Abstract:
The present invention relates to a foam polystyrene-based bead. The foam polystyrene-based bead includes: a core containing a styrene-based resin, a char-generating thermoplastic resin, and an inorganic foam; and a skin disposed on the surface of the core, wherein the skin contains a resin of which the glass transition temperature is below around 120°C. Here, the foam is contained in the core or skin. The core may further include a carbon filter. The foam manufactured from the flame retardant foam polystyrene-based bead does not conform to KS F ISO 5660-1, but is a self-extinguishing flame retardant material. Thus, the foam may have improved flameproof properties as compared to those of a flame retardant material (flame retardant 3rd degree), better thermal insulation performance, and superior mechanical strength.
Abstract translation:本发明涉及泡沫聚苯乙烯基珠粒。 发泡聚苯乙烯系珠包含:含有苯乙烯系树脂,产生焦炭的热塑性树脂和无机发泡体的芯; 以及设置在芯的表面上的表皮,其中表皮包含玻璃化转变温度低于约120℃的树脂。 这里,泡沫包含在核心或皮肤中。 芯可以进一步包括碳过滤器。 由阻燃泡沫聚苯乙烯基珠制造的泡沫不符合KS F ISO 5660-1,但是是一种自熄性阻燃材料。 因此,与阻燃材料(阻燃性3度)相比,泡沫可以具有改进的防火性能,更好的隔热性能和优异的机械强度。
Abstract:
The present invention relates to a composition including stem cell-derived microvesicles as an active ingredient for promoting neurogenesis. The stem cell-derived microvesicles according to the present invention can promote neurogenesis and migration of nerves and also promote angiogenesis in vascular endothelial cells, and thus can be usefully used in treatment of neurological damage.
Abstract:
Disclosed are a system and a method for a location-based service for navigating indoors. The system for a location-based service according to the present invention comprises: a plurality of access points; a mobile terminal, which is connected to at least one of the plurality of access points, receives a Wi-Fi signal transmitted from the access point, and forms a first Wi-Fi fingerprint using the received Wi-Fi signal; and a navigation service server, which is connected to the mobile terminal, generates a plurality of Wi-Fi radio maps that correspond to a plurality of second Wi-Fi fingerprints by using the plurality of second Wi-Fi fingerprints that correspond to a plurality of indoor locations, selects, from the plurality of Wi-Fi radio maps, a Wi-Fi radio map for estimating the location of the mobile terminal, and estimates the location of the mobile terminal from the second Wi-Fi fingerprint that corresponds to the first Wi-Fi fingerprint, on the basis of the selected Wi-Fi radio map.
Abstract:
Disclosed is a composition for increasing height. More specifically, disclosed is a composition for increasing height comprising horse bone extract as an active ingredient.
Abstract:
The present invention relates to a parallel connected switching converter in which the turn-on and turn-off operations of a plurality of converters connected in parallel with each other are controlled to keep the phase difference between the converters constant. The parallel connected switching converter of the present invention includes: a first switching control unit for generating a first switching control signal for controlling the turn-on and turn-off operations of a first converter; a synchronous signal generating unit provided with a first capacitor and a second capacitor, interconnecting the first capacitor and the second capacitor in accordance with a first switching control signal output from the first switching control unit to control the voltage of the first capacitor through charge sharing between the first capacitor and the second capacitor, and generating a synchronous signal which is synchronous to the first switching control signal and having a predetermined phase difference by using the voltage of the first capacitor; and a second switching control unit for generating a second switching control signal in accordance with the synchronous signal output from the synchronous signal generating unit to control the turn-on and turn-off operations of the second converter. The parallel connected switching converter of the present invention keeps the phase difference between parallel connected converters constant by using a charge sharing scheme, and controls all of the parallel connected converters to operate in a DCM (discontinuous conduction mode), thereby being capable of preventing an increase in switching loss and switching noise caused by reverse recovery resulting from their operation in a CCM (continuous conduction mode).
Abstract:
The present invention relates to a parallel connected switching converter in which the turn-on and turn-off operations of a plurality of converters connected in parallel with each other are controlled to keep the phase difference between the converters constant. The parallel connected switching converter of the present invention includes: a first switching control unit for generating a first switching control signal for controlling the turn-on and turn-off operations of a first converter; a synchronous signal generating unit provided with a first capacitor and a second capacitor, interconnecting the first capacitor and the second capacitor in accordance with a first switching control signal output from the first switching control unit to control the voltage of the first capacitor through charge sharing between the first capacitor and the second capacitor, and generating a synchronous signal which is synchronous to the first switching control signal and having a predetermined phase difference by using the voltage of the first capacitor; and a second switching control unit for generating a second switching control signal in accordance with the synchronous signal output from the synchronous signal generating unit to control the turn-on and turn-off operations of the second converter. The parallel connected switching converter of the present invention keeps the phase difference between parallel connected converters constant by using a charge sharing scheme, and controls all of the parallel connected converters to operate in a DCM (discontinuous conduction mode), thereby being capable of preventing an increase in switching loss and switching noise caused by reverse recovery resulting from their operation in a CCM (continuous conduction mode).
Abstract:
A polycarbonate-based thermoplastic composition according to the present invention comprises (A) a polycarbonate resin, (B) a rubber-modified acryl-based graft copolymer resin, and (C) a silicon-based compound containing copolymer. The polycarbonate-based thermoplastic composition has excellent flowability without deteriorations in impact strength and heat resistance by introducing the silicon-based containing copolymer into the polycarbonate resin.