Abstract: An apparatus for processing a substrate is provided. The apparatus includes: a levitation stage transferring a substrate in a first direction and including first areas and second areas, which are arranged in a second direction that is different from the first direction; a plurality of rollers installed in the first areas and transferring the substrate; a plurality of first vacuum holes installed in the first areas and sucking the air at first pressure; and a plurality of second vacuum holes installed in the second areas and sucking the air at second pressure that is different from the first pressure.

Abstract: An open-air type earphone with a bracket forming a bass pipe is provided. The open-air type earphone includes: a housing configured to be worn on an ear and having a sound-emitting hole and a back hole; an acoustic transducer mounted within the housing and configured to emit sound to the sound-emitting hole; and one or more brackets mounted between the acoustic transducer and the housing and capable of tuning acoustic characteristics.

Abstract: An open-air type earphone with a bracket forming a bass pipe is provided. The open-air type earphone includes: a housing configured to be worn on an ear and having a sound-emitting hole and a back hole; an acoustic transducer mounted within the housing and configured to emit sound to the sound-emitting hole; and one or more brackets mounted between the acoustic transducer and the housing and capable of tuning acoustic characteristics.

Abstract: Provided is an apparatus of measuring the amount of feed. The apparatus includes a feed tank, a plurality of sliders, a case, a plurality of guides, and a weight sensor. The feed tank includes a discharge tube disposed at a lower part thereof and includes a body filled with feed. The plurality of sliders is radially and vertically disposed on an outer surface of the feed tank. The case has a discharge tube insertion hole at a lower part thereof to receive a discharge tube of the feed tank and receives the feed tank. The plurality of guides is radially and vertically disposed on an inner surface of the case. The weight sensor is disposed under the guide and makes contact with a lower end of the slider of the feed tank to measure the weight of the feed tank and feed.

Abstract: Provided is an apparatus of measuring the amount of feed. The apparatus includes a feed tank, a plurality of sliders, a case, a plurality of guides, and a weight sensor. The feed tank includes a discharge tube disposed at a lower part thereof and includes a body filled with feed. The plurality of sliders is radially and vertically disposed on an outer surface of the feed tank. The case has a discharge tube insertion hole at a lower part thereof to receive a discharge tube of the feed tank and receives the feed tank. The plurality of guides is radially and vertically disposed on an inner surface of the case. The weight sensor is disposed under the guide and makes contact with a lower end of the slider of the feed tank to measure the weight of the feed tank and feed.

Abstract: An antifungal agent for the prevention and treatment of the fungal diseases caused by the water mould Saprolegnia parasitica includes the natural product sweet flag extract or its essential oil as an active ingredient and, therefore, is eco-friendly and not harmful to fish. In addition to offering effective prevention and inhibition of mould growth, the antifungal agent can replace malachite green, a known carcinogen, in the aquaculture industry.

Abstract: An antifungal agent for the prevention and treatment of the fungal diseases caused by the water mould Saprolegnia parasitica includes the natural product sweet flag extract or its essential oil as an active ingredient and, therefore, is eco-friendly and not harmful to fish. In addition to offering effective prevention and inhibition of mould growth, the antifungal agent can replace malachite green, a known carcinogen, in the aquaculture industry.

Abstract: A spring for motors and an optical disk drive having a motor with such a spring are disclosed. The spring consists of a shaft-hooking part (102) held by the rotating shaft of a motor (M), a rear hooking part (104) held at the rear end surface of the motor, and an elastic connecting part (106) extending between the two hooking parts to connect them to each other.

Abstract: A spring for motors and an optical disk drive having a motor with such a spring are disclosed. The spring consists of a shaft-hooking part (102) held by the rotating shaft of a motor (M), a rear hooking part (104) held at the rear end surface of the motor, and an elastic connecting part (106) extending between the two hooking parts to connect them to each other.