Abstract: Disclosed are a novel Bifidobacterium longum RAPO (Accession No.: KCTC 13773BP) and a composition for alleviating, treating or preventing rheumatoid arthritis containing Bifidobacterium longum RAPO (Accession No.: KCTC 13773BP) selected herein.

Abstract: Disclosed are a novel Bifidobacterium longum RAPO (Accession No.: KCTC 13773BP) and a composition for alleviating, treating or preventing rheumatoid arthritis containing Bifidobacterium longum RAPO (Accession No.: KCTC 13773BP) selected herein.

Abstract: The present invention relates to a safety diagnosis method for a structure using a nonlinear ultrasonic wave modulation technique. The safety diagnosis method includes: making the structure vibrate by applying signals of different ultrasonic frequencies; converting the responses of the structure generated by the vibration into digital signals; extracting first modulation signals by subtracting the harmonic responses and the linear responses of the signals of different ultrasonic frequencies from the digital signals and synchronously demodulating the digital signals; constructing a first sideband spectrogram by combining the first modulation signals generated by continuously changing at least frequency among the signals of different ultrasonic frequencies; and deciding whether the structure is cracked based on the first sideband spectrogram.

Abstract: The present invention relates to a safety diagnosis method for a structure using a nonlinear ultrasonic wave modulation technique. The safety diagnosis method includes: making the structure vibrate by applying signals of different ultrasonic frequencies; converting the responses of the structure generated by the vibration into digital signals; extracting first modulation signals by subtracting the harmonic responses and the linear responses of the signals of different ultrasonic frequencies from the digital signals and synchronously demodulating the digital signals; constructing a first sideband spectrogram by combining the first modulation signals generated by continuously changing at least frequency among the signals of different ultrasonic frequencies; and deciding whether the structure is cracked based on the first sideband spectrogram.

Abstract: A media file reproduction apparatus and method which reduces power consumption by cutting off the power to a storage medium driving unit when a media file stored in a storage medium is being played back. The apparatus includes a storage medium driving unit for retrieving a media file per loading unit from a storage medium; a memory; a power supply; and a controller adapted to load the retrieved media file into the memory and to access the memory and play back the media file. The controller instructs the power supply to reduce or cut off power to the storage medium driving unit from when loading of a corresponding loading unit of the retrieved media file into the memory is completed when instructing a retrieval of a next loading unit of the media file. While the retrieved media file is played back, power to the storage medium driving unit is stopped.