Abstract: An intraoral scanner having a tomographic imaging function includes an OCT body configured to obtain an internal cross-sectional image of an oral structure; an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light to the OCT body; and a control/processing unit configured to control the OCT body, take a tomographic image of the oral structure, obtain two or more two-dimensional cross-sectional images, extract an internal crack area for the respective two-dimensional cross-sectional images, calculate cross-sectional position information of the internal crack, then arrange the position information of the internal crack obtained from the respective two-dimensional cross-sectional images in positions where the respective two-dimensional cross-sectional images have been obtained, and obtain three-dimensional shape information of the internal crack.

Abstract: Switchgear equipment (a cubicle) that houses various transformers are installed in a substation room that converts 22.9 KV extra-high voltage to low voltage 380/220V. As electrical safety personnel have to inspect the switchgear equipment on daily, monthly, quarterly, and annual basis, electric shock accidents frequently occur due to exposure to high voltage and high current. To remind workers to work safe, the present invention provides an electrical safety alarm apparatus that, before opening a door, not only displays various safety phrases but also reminds the electrical safety personnel of a voice event to thus prevent electrical disasters in advance, and that is installed (attached) to the front/rear side of a switchgear panel to strongly remind operators to pay attention to safety during inspection and maintenance of extra-high and low voltage boards, power MCC boards, distribution boards, plant control boards, and the like to thus prevent electrical disasters in advance.

Abstract: An intraoral scanner having a tomographic imaging function includes an OCT body configured to obtain an internal cross-sectional image of an oral structure and detecting reflected light; an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light to the OCT body; and a control/processing unit configured to control the OCT body, take tomographic images of the oral structure at two or more positions, obtain two or more two-dimensional cross-sectional images of the oral structure, extract an abrasion or filling area for the respective two-dimensional cross-sectional images, calculate cross-sectional position information of the abrasion or filling area, then arrange the position information of the abrasion or filling area, and obtain three-dimensional shape information of the abrasion or filling area.

Abstract: An intraoral scanner having a tomographic imaging function includes an OCT body configured to obtain an internal cross-sectional image of an oral structure; an OCT scan probe configured to irradiate the layer measurement light emitted from the OCT body onto the oral structure and transfer the reflected light to the OCT body; and a control/processing unit configured to control the OCT body, take a tomographic image of the oral structure, obtain two or more two-dimensional cross-sectional images, extract an internal crack area for the respective two-dimensional cross-sectional images, calculate cross-sectional position information of the internal crack, then arrange the position information of the internal crack obtained from the respective two-dimensional cross-sectional images in positions where the respective two-dimensional cross-sectional images have been obtained, and obtain three-dimensional shape information of the internal crack.

Abstract: The present invention discloses a connector for an aerodrome lighting system for connecting a pair of primary cables and a pair of high voltage cables with each other among parts including a transformer, a pair of the primary cables connected to the transformer, a secondary cable for supplying electricity to a lamp, and a pair of the high voltage cables. The connector includes: a ?-shaped or U-shaped connector body; a receptacle formed integrally with an end portion of the connector body; and a plug formed integrally with the other end portion of the connector body, wherein the receptacle and the plug are formed integrally inside the connector and are electrically connected with each other. Two connectors are used in one aerodrome lighting system. One of the connectors connects the plug of the primary cable to the receptacle and connects the plug to the receptacle of the outgoing high voltage cable.

Abstract: A new polymeric material for biological tissue regeneration or treatment with a drug delivery system which contains therapeutic agents and/or bioactive molecules to reduce infection and inflammatory reaction at a wound site and maximize tissue regeneration and wound healing is provided. The new bioactive molecule-loaded polymeric material is prepared by (1) preparing micrometer or nanometer sized bioactive molecule-loaded particles; (2) modifying the surface of the prepared particles and immobilizing the particles on the surface of the polymeric material; and (3) physically treating the surface of the polymeric material to improve binding strength of the particles immobilized thereon.

Abstract: A helical antenna having a simple structure and being made of cheap conductor to reduce the manufacturing cost, and a manufacturing method thereof. A helical antenna comprises a dielectric core, a conductive strip, a feeding conductor, and an external circuit. The dielectric core has a substantially cylindrical shape with an outer circumferential surface on which a spiral groove is formed. The conductive strip is deposited on the groove of the dielectric core. The feeding conductor is placed under the dielectric core and provides an electrical connection between the conductive strip and an external circuit. The antenna cover encloses the dielectric core and the feeding conductor.