Abstract: Disclosed herein is a manufacturing method for a ceramic heater. The manufacturing method includes the step of manufacturing a sintered ceramic substrate using a ceramic material and forming a conductive through hole in the ceramic substrate, the step of screen printing low temperature firing paste on the ceramic substrate, thus forming a heating wire, the step of screen printing Ag paste on the through hole, thus forming an electrode, the step of joining, using heat and pressure, a green sheet to a surface of the ceramic substrate on which the heating wire is formed, the step of firing the joined ceramic substrate and green sheet at low temperature, thus manufacturing a substrate body, and the step of brazing the lead wire to the electrode of the substrate body using filler metal while the lead wire is exposed to atmosphere.

Abstract: A hair iron includes upper and lower casings defining a grip portion and coupled to each other at a first end with an elastic coupler such that the casings in the side of a second end opposite to the first end are pivotable within a certain angular range about the first end, an upper heater block extending in a longitudinal direction of the upper casing and coupled on the second end of the upper casing which is not coupled with the lower casing, a lower heater block extending in a longitudinal direction of the lower casing and coupled on the second end of the lower casing which is not coupled with the upper casing.

Abstract: This invention relates to a negative active material for a lithium secondary battery, a method of preparing the same and a lithium secondary battery including the same. This negative active material exhibits high capacity and superior cycle-life characteristics and is thus usefully employed in a lithium secondary battery which shows high capacity during high-rate charge•discharge.

Abstract: Disclosed herein is a portable folding type hairstyling tool. The hairstyling tool includes a casing unit which also serves as a handle, and a hairstyling unit which is inserted into or unfolded from the casing unit to be used by pivoting. The hairstyling unit includes an electric heating part for applying heat to the hair, and the casing unit includes a power source. The hairstyling unit has a rotary switch around a hinge part, thus allowing power to be supplied to the electric heating part by a power source only when the hairstyling unit is unfolded from the casing unit.

Abstract: Disclosed herein is a hair iron having upper and lower casings, a heat generating unit and a hinge connection unit. The hinge connection unit includes a hinge box secured to either of the upper and lower casings. First and second movable members each having a hinge shaft are provided in the hinge box, and move between a hinge coupling position and a hinge releasing position. An elastic member is elastically provided between the first and second movable members, and exerts an elastic force so that the hinge shaft moves to the hinge releasing position. A hinge-coupling retaining means is manipulated on an outside of the hinge box to move the hinge shaft to the hinge coupling position and simultaneously retain the hinge shaft in the hinge coupling position. A hinge-shaft connection lug is provided on a remaining one of the upper and lower casings, and has a hinge hole.

Abstract: An air conditioning system can automatically increase or decrease a desired temperature of an indoor unit at a variable gradient smaller than the variable gradient per predetermined time of an outdoor temperature. Hence, the user does not have to directly change the desired temperature, thus increasing user's convenience. Also, in the event of a significant diurnal range in temperature, air conditioning sickness can be prevented since an optimum indoor temperature can be maintained. Moreover, the variable gradient of the desired temperature of a room is smaller than the variable gradient of an outdoor temperature, thus keeping the room pleasant.

Abstract: A hair iron includes upper and lower casings defining a grip portion and coupled to each other at a first end with an elastic coupler such that the casings in the side of a second end opposite to the first end are pivotable within a certain angular range about the first end, an upper heater block extending in a longitudinal direction of the upper casing and coupled on the second end of the upper casing which is not coupled with the lower casing, a lower heater block extending in a longitudinal direction of the lower casing and coupled on the second end of the lower casing which is not coupled with the upper casing.

Abstract: The present invention relates to a method for preparing anatase-type titanium dioxide (TiO2) nanoparticles, the method comprising the steps of: uniformly mixing titanium n-butoxide and cetyltrimethyl ammonium salt (CTAS) in water; subjecting the mixture to hydrothermal treatment at a temperature of 60˜120° C.; and collecting anatase-type titanium dioxide nanoparticles produced by the hydrothermal treatment and drying the collected nanoparticles. According to the present invention, anatase-type titanium dioxide nanoparticles having excellent crystallinity can be easily prepared in large amounts by a simple process without needing heat treatment.