Abstract: The present disclosure relates to an organ-on-a-chip, and according to the present disclosure, the organ-on-a-chip includes a first layer having a first microfluidic channel to culture a first organ cell, a second layer having a second microfluidic channel, a third layer having a third microfluidic channel to culture a second organ cell, a first membrane to spatially separate the first microfluidic channel from the second microfluidic channel, and a second membrane to spatially separate the second microfluidic channel from the third microfluidic channel, thereby measuring the rate of absorption of a test drug into the first organ cell and the second organ cell at the same time.

Abstract: An apparatus and method for predicting a friction coefficient of a road surface are disclosed. The apparatus includes a microphone that obtains a sound signal around a tire mounted on a vehicle, and a controller that estimates a state and a type of the road surface and a degree of tire wear corresponding to the sound signal around the tire based on a first deep learning model, estimates a peak adjustment factor and an initial inclination adjustment factor of a friction coefficient curve corresponding to the state and the type of the road surface and the degree of tire wear based on a second deep learning model, and predicts the friction coefficient based on the peak adjustment factor and the initial inclination adjustment factor of the friction coefficient curve.

Abstract: Provided is a stack molding machine including an upper mold having formed therein a first runner and a first gate serving as a path of a resin material, a first intermediate plate provided under and combined with the upper mold, and having formed therein a first molding connected to the first gate to mold at least a portion on a first substrate placed under the first intermediate plate, a dummy plate provided under and spaced a certain distance apart from the first intermediate plate, a second intermediate plate provided under the dummy plate, and having formed therein a second molding connected to a second gate to mold at least a portion under a second substrate placed under the dummy plate, and a lower mold having formed therein a second runner and the second gate serving as a path of the resin material, and combined with the second intermediate plate.

Abstract: An apparatus and method for predicting a friction coefficient of a road surface are disclosed. The apparatus includes a microphone that obtains a sound signal around a tire mounted on a vehicle, and a controller that estimates a state and a type of the road surface and a degree of tire wear corresponding to the sound signal around the tire based on a first deep learning model, estimates a peak adjustment factor and an initial inclination adjustment factor of a friction coefficient curve corresponding to the state and the type of the road surface and the degree of tire wear based on a second deep learning model, and predicts the friction coefficient based on the peak adjustment factor and the initial inclination adjustment factor of the friction coefficient curve.

Abstract: A wheel structure for a vehicle includes: a rim, and a resonator including a plurality of resonance tubes attached along an outer peripheral surface of the rim. The plurality of resonance tubes are spaced apart from each other and connected along the outer peripheral surface of the rim by a plurality of strips, and an end of each of the strips is coupled to a corresponding end of each of the resonance tubes.

Abstract: Provided is a stack molding machine including an upper mold having formed therein a first runner and a first gate serving as a path of a resin material, a first intermediate plate provided under and combined with the upper mold, and having formed therein a first molding connected to the first gate to mold at least a portion on a first substrate placed under the first intermediate plate, a dummy plate provided under and spaced a certain distance apart from the first intermediate plate, a second intermediate plate provided under the dummy plate, and having formed therein a second molding connected to a second gate to mold at least a portion under a second substrate placed under the dummy plate, and a lower mold having formed therein a second runner and the second gate serving as a path of the resin material, and combined with the second intermediate plate.

Abstract: The present disclosure relates to an organ-on-a-chip, and according to the present disclosure, the organ-on-a-chip includes a first layer having a first microfluidic channel to culture a first organ cell, a second layer having a second microfluidic channel, a third layer having a third microfluidic channel to culture a second organ cell, a first membrane to spatially separate the first microfluidic channel from the second microfluidic channel, and a second membrane to spatially separate the second microfluidic channel from the third microfluidic channel, thereby measuring the rate of absorption of a test drug into the first organ cell and the second organ cell at the same time.

Abstract: A wheel structure for a vehicle includes: a rim, and a resonator including a plurality of resonance tubes attached along an outer peripheral surface of the rim. The plurality of resonance tubes are spaced apart from each other and connected along the outer peripheral surface of the rim by a plurality of strips, and an end of each of the strips is coupled to a corresponding end of each of the resonance tubes.

Abstract: Disclosed a Dahlia pinnata composition, Dahlia pinnata composition powders, a Dahlia pinnata cosmetic composition and a method for producing the same. A method for producing a Dahlia pinnata composition includes preparing Dahlia pinnata petals; adding and stirring ethanol into the Dahlia pinnata petals to extract Dahlia pinnata extract; filtering the Dahlia pinnata extract; and diluting the filtered Dahlia pinnata extract in a solvent to obtain a Dahlia pinnata composition having an antioxidant efficacy. The Dahlia pinnata composition is produced by the method for producing a Dahlia pinnata composition, and thus has an antioxidant efficacy. In addition, the cosmetic composition includes the Dahlia pinnata extract and thus has an antioxidant efficacy.

Abstract: Disclosed a Dahlia pinnata composition, Dahlia pinnata composition powders, a Dahlia pinnata cosmetic composition and a method for producing the same. A method for producing a Dahlia pinnata composition includes preparing Dahlia pinnata petals; adding and stirring ethanol into the Dahlia pinnata petals to extract Dahlia pinnata extract; filtering the Dahlia pinnata extract; and diluting the filtered Dahlia pinnata extract in a solvent to obtain a Dahlia pinnata composition having an antioxidant efficacy. The Dahlia pinnata composition is produced by the method for producing a Dahlia pinnata composition, and thus has an antioxidant efficacy. In addition, the cosmetic composition includes the Dahlia pinnata extract and thus has an antioxidant efficacy.