Abstract: An air mobility device improves propulsion due to the Coand? effect when flying so as to increase a flying range and reduces noise when flying.

Abstract: The present invention relates to a method for producing a culture medium-derived component or a crystallized culture medium using a PCA (Precipitation with Compressed Fluid Anti-solvent) drying process, a method for restoring chondrocytes using the culture medium-derived component or the crystallized culture medium prepared by way of the above method, a method for treating a subject having osteoarthritis by way of the method for restoring chondrocytes using the culture medium-derived component or the crystallized culture medium, a method for treating a subject having osteoarthritis using the culture medium-derived component or the crystallized culture medium, and the use of the culture medium-derived component or the crystallized culture medium for the treatment of osteoarthritis.

Abstract: A luggage box includes a main box installed to be accommodated in and be drawn from a luggage side trim. A hidden box is connected to the main box so that the hidden box is operated together with the main box. The hidden box is disposed in a row with the main box when the main box is accommodated in the luggage side trim, and is movable to a main box accommodation space to be externally exposed when the main box drawn from the luggage side trim rotates.

Abstract: A luggage box includes a main box installed to be accommodated in and be drawn from a luggage side trim. A hidden box is connected to the main box so that the hidden box is operated together with the main box. The hidden box is disposed in a row with the main box when the main box is accommodated in the luggage side trim, and is movable to a main box accommodation space to be externally exposed when the main box drawn from the luggage side trim rotates.

Abstract: A vehicle radiator grill that is manufactured by integrally combining plastic resins of different colors by using double injection and thus has two different colors is provided. The vehicle radiator grill includes a base component that has a first color and forms an exterior of a radiator grill while providing a vent component which has a plurality of air passages formed therethrough and blocked parts are disposed at both sides of the vent component. Additionally, an image component which has a second color different from the color of the base component is integrally formed with the base component by using double injection and exposes the second color toward the front of the radiator grill through the air passage to form an image of two different colors.

Abstract: A vehicle radiator grill that is manufactured by integrally combining plastic resins of different colors by using double injection and thus has two different colors is provided. The vehicle radiator grill includes a base component that has a first color and forms an exterior of a radiator grill while providing a vent component which has a plurality of air passages formed therethrough and blocked parts are disposed at both sides of the vent component. Additionally, an image component which has a second color different from the color of the base component is integrally formed with the base component by using double injection and exposes the second color toward the front of the radiator grill through the air passage to form an image of two different colors.

Abstract: A herb medicine extract-containing non-bleeding striped dentifrice composition, consisting essentially of a striped dentifrice component and a base dentifrice component, each component comprising the following ingredients at the substantially same amount: a. an abrasive that has a BET surface area of 10 m.sup.2 /g or less and an average particle diameter of 1 to 30 .mu.m upon measurement by Coulter Counter method, and shows oil absorption (linseed oil, ml/100 g) of 50 or less; b. a binder selected from the group consisting of xanthan gum, carrageenan, sodium carboxymethylcellulose, and the mixtures thereof; c. an alkyl sulfonate of anionic surfactants; and d. a humectant, and said striped dentifrice component containing herb medicine extracts at an amount of 0.001 to 10% by weight, on the basis of dry solid substance. It is non-bleeding by virtue of the substantially same formulation in the two components and the herb medicine extracts allow the dentifrice composition to suppress the formation of plaque.