Abstract: A method of easily manufacturing an exhaust hole of a plasma display panel, the method including the operations of arranging a laser on one side of a substrate and arranging a reflective plate in line with the laser on the other opposite side of the substrate, radiating a laser beam of the laser to the substrate, and forming the exhaust hole by cooling the substrate.

Abstract: The present invention relates to a method for producing an avian chimera using spermatogonial cells which comprising the steps: (a) retrieving a testis from a donor ave; (b) isolating a testicular cell population from the testis; (c) culturing the testicular cell population in a medium supplemented with a cell growth factor to obtain a spermatogonial cell population; and (d) injecting the cultured spermatogonial cell population or testicular cell population into a testis of a recipient ave to produce the avian chimera. In addition, the present invention relates to a germline avian chimera.

Abstract: A Braun tube having an antibacterial coating film, which is manufactured by the steps of dispersing titanium dioxide (TiO2) in alcohol to prepare a dispersion. Then, the dispersion is coated on a Braun tube, and a thermal treatment is then performed. By a photocatalytic reaction of the titanium dioxide contained in the antibacterial coating film, oxygen (O2) and water (H2O) in the air are decomposed into superoxides (O2−) and hydroxy radicals (OH·), which destroy bacteria and mold around the Braun tube and remove bad odor.

Abstract: A method for playback in a constant angular velocity video disk player having an extended operating period of playback is described. A synchronization system including four vertical synchronization fields per each track of the disk is used to enable writing of data in higher density, the synchronization fields are detected from the disk to render a count value to which a preset provided from a micro computer is compared, and consequently in response to the comparative result, the disk revolution velocity is decreasingly controlled in order to provide an extended operating period of playback.