Abstract: A plasma etching method includes a first step of supplying a mixed gas containing vaporized heptafluoroisopropyl methyl ether gas having a molecular structure of a following Chemical Formula 1 or vaporized heptafluoropropyl methyl ether gas having a molecular structure of a following Chemical Formula 2 and argon gas into a plasma chamber in which an etching target is disposed; and a second step of etching the etching target using plasma generated from the mixed gas:

Abstract: The present invention is related to a pharmaceutical composition and health food for preventing or treating hearing loss, wherein the pharmaceutical composition and health food contain carbenoxolone or its pharmaceutically acceptable salts as an effective component. More particularly, a composition including carbenoxolone or its pharmaceutically acceptable salts as an effective component is provided as a pharmaceutical composition for preventing or treating ototoxic hearing loss due to the carbenoxolone or its pharmaceutically acceptable salts prevent damages on auditory cells from ototoxic drugs such as cisplatin anticancer drugs, and the composition may be used as a drug for treating noise-induced hearing loss and age-related hearing loss, as well as ototoxic hearing loss.

Abstract: An apparatus for actively tracking an object is provided. The apparatus includes a camera unit; a motor drive for changing a shooting direction of the camera unit; and a controller for acquiring a first comparative image and a second comparative image in sequence using the camera unit, comparing the first comparative image with the second comparative image, detecting a moving direction and a speed of an identical object existing in the first and second comparative images, determining an estimated location of the object after receipt of the second comparative image based on the detected moving direction and speed, and enlarging and capturing the object in the estimated location of the object.