Abstract: The present invention includes: an electronic document receiving unit receiving an original electronic document; a text information extracting unit extracting text and text location information by analyzing content of the original electronic document; an image information extracting unit extracting an image and image location information by analyzing the content; a verification data generating unit generating original forgery falsification verification data by using at least one of the text and the text location information, the image and the image location information; and a secure electronic document generating unit generating a secure original electronic document after encrypting and inserting the original forgery falsification verification data in a preset position of the original electronic document.

Abstract: A conjunction assembly provides a seal, in a connected state, between a conjunction ring constituting an outlet of a combustor and a turbine inlet cylinder constituting an inlet of the turbine. The conjunction assembly includes a connecting member that protrudes from the conjunction ring; a connecting groove for receiving the connecting member, the connecting groove formed in the turbine inlet cylinder; and a connection sealing member disposed between the connecting member and an inner surface of the turbine inlet cylinder to provide a seal between the connecting member and the inner surface of the turbine inlet cylinder. The connecting member is a ring-like structure formed on a rear-side surface of the conjunction ring, the rear-side surface facing the turbine inlet cylinder, and the connecting groove is formed in a front-side surface of the turbine inlet cylinder in correspondence to the connecting member, the front-side surface facing the conjunction ring.

Abstract: The present invention includes: an electronic document receiving unit receiving an original electronic document; a text information extracting unit extracting text and text location information by analyzing content of the original electronic document; an image information extracting unit extracting an image and image location information by analyzing the content; a verification data generating unit generating original forgery falsification verification data by using at least one of the text and the text location information, the image and the image location information; and a secure electronic document generating unit generating a secure original electronic document after encrypting and inserting the original forgery falsification verification data in a preset position of the original electronic document.

Abstract: Disclosed is a pre-swirler for a gas turbine. A pre-swirler for a gas turbine according to an embodiment of the present invention including an auxiliary vane between main vanes disposed along a circumferential direction of a pre-swirler housing of a gas turbine to promote stable movement of cooling air.

Abstract: The present invention relates to a method for preparation of an artificial blood vessel using a tube-type porous biodegradable scaffold having a double layered structure and a stem cell, and an artificial blood vessel made by the same. Specifically, the present invention relates to a method for preparation of an artificial blood vessel by separately seeding a stem cell onto the inner membrane and an outer membrane of a tube-type porous biodegradable scaffold having a double layered structure, wherein the inner membrane and the outer membrane having different biodegradable polymer nano-fiber arrangements are continuously linked, and by inducing differentiation; and an artificial blood vessel made by the same.

Abstract: The present invention relates to a gas turbine which includes a cooling system provided with cooling air supply paths bypassed through an outside casing and, more specifically, to a gas turbine including a cooling system and a cooling method, wherein, in order to supply cooling air to a plurality of turbine blades and other devices provided to the inside of the gas turbine, cooling air supply paths are not provided to the rotor center shaft of the gas turbine but provided around the outer casing of the gas turbine so as to achieve the increased effect in the aerodynamic efficiency of the compressor and the turbine. According to the above structure and method, it may be possible to provide the cooling air supply paths not to the rotor center shaft of the gas turbine but around the outer casing of the gas turbine, thereby finally achieving the increased effect in the aerodynamic efficiency of the compressor and the turbine.

Abstract: A refrigerator includes an ice storage container coupled to a mounting space of an inner wall of a freezing chamber door, and the ice storage container is attachable to and detachable from the mounting space by elastic lever units to maintain and release locking of the ice storage container with the mounting space, and elastic coupling units to maintain coupling of the ice storage container to the mounting space by elastic deformation and restrict movement of the ice storage container in the horizontal direction of the mounting space when the ice storage container is mounted on the mounting space, thereby preventing abrasion and breakdown of components due to user's ease in the assembly of the ice storage container and increase in the fixing force of the ice storage container.

Abstract: There are disclosed a system and method for preventing the leaking of digital content. The system for preventing the leaking of digital content may include a digital content layer generation unit for generating a digital content layer displaying digital content, a security layer generation unit for generating a security layer including security information based on information about a user terminal, and an information display unit for displaying the security layer generated by the security layer generation unit and the digital content layer generated by the digital content layer generation unit in the display device of the user terminal in an overlapping form so that the security information looks like overlapping with the digital content. Accordingly, the illegal leaking of digital content through photographing or screen capture can be prevented.

Abstract: Disclosed is a refrigerator including a main body cabinet forming a storage compartment with a front opening, a door opening and closing the front opening of the storage compartment, and an ice making tray mounted to the door and making ice. The refrigerator includes a water supplying pipe which receives water from a water supplying source; a discharging pipe guide which includes a hollow part and is mounted to a through part penetrating from an outside region of the door to an upper side of the ice making tray; and a discharging pipe which includes a first end detachably connected to the water supplying pipe, and a second end disposed above the ice making tray after passing through the hollow part and detachably coupled to the door.

Abstract: The present invention relates to a method for preparation of an artificial blood vessel using a tube-type porous biodegradable scaffold having a double layered structure and a stem cell, and an artificial blood vessel made by the same. Specifically, the present invention relates to a method for preparation of an artificial blood vessel by separately seeding a stem cell onto the inner membrane and an outer membrane of a tube-type porous biodegradable scaffold having a double layered structure, wherein the inner membrane and the outer membrane having different biodegradable polymer nano-fiber arrangements are continuously linked, and by inducing differentiation; and an artificial blood vessel made by the same.

Abstract: There are disclosed a system and method for preventing the leaking of digital content. The system for preventing the leaking of digital content may include a digital content layer generation unit for generating a digital content layer displaying digital content, a security layer generation unit for generating a security layer including security information based on information about a user terminal, and an information display unit for displaying the security layer generated by the security layer generation unit and the digital content layer generated by the digital content layer generation unit in the display device of the user terminal in an overlapping form so that the security information looks like overlapping with the digital content. Accordingly, the illegal leaking of digital content through photographing or screen capture can be prevented.

Abstract: An antenna providing a plurality of radiation patterns by adjusting a vertical beamwidth and a construction method for the antenna are provided. The antenna may include an integrated circuit (IC) element unit to provide a plurality of radiation patterns, and a switching unit to selectively provide any one of the plurality of radiation patterns based on control data.

Abstract: Disclosed is a refrigerator including a main body cabinet forming a storage compartment with a front opening, a door opening and closing the front opening of the storage compartment, and an ice making tray mounted to the door and making ice. The refrigerator includes a water supplying pipe which receives water from a water supplying source; a discharging pipe guide which includes a hollow part and is mounted to a through part penetrating from an outside region of the door to an upper side of the ice making tray; and a discharging pipe which includes a first end detachably connected to the water supplying pipe, and a second end disposed above the ice making tray after passing through the hollow part and detachably coupled to the door.

Abstract: A refrigerator includes an ice storage container coupled to a mounting space of an inner wall of a freezing chamber door, and the ice storage container is attachable to and detachable from the mounting space by elastic lever units to maintain and release locking of the ice storage container with the mounting space, and elastic coupling units to maintain coupling of the ice storage container to the mounting space by elastic deformation and restrict movement of the ice storage container in the horizontal direction of the mounting space when the ice storage container is mounted on the mounting space, thereby preventing abrasion and breakdown of components due to user's ease in the assembly of the ice storage container and increase in the fixing force of the ice storage container.

Abstract: A refrigerator comprising a housing, a pair of doors, link devices, and damping devices. Each of the damping devices includes a casing defining the appearance of the damping device, a cam member, a piston, a sealing member fitted around the piston, a spring, a guide rod, and a cap member connected to the guide rod so as to be positioned inside the casing. Since the damping device of the present invention is reducible in size, and is vertically mountable by virtue of its reduced operating space, it can be installed inside a refrigerator door or refrigerator housing, rather than the bottom surface of the refrigerator. Especially, the damping device can be mounted inside the lower end portion of a front panel of the refrigerator door, resulting in ease in exchange and repair thereof.

Abstract: Disclosed are a catalyst for removing NOx from flue gas and its preparation. The catalyst comprises vanadium pentoxide, and barium oxide or calcium oxide as active components on a titanium dioxide support and is prepared by uniformly dispersing the metal oxides on the surface of the titanium dioxide support. This support is prepared by sufficiently drying and calcining a metatitanate (TiO(OH)2)-predominating slurry which is obtained from the course of the production of titanium dioxide for pigment from ilmenite. The catalyst exbihits excellent NOx removal activity as well as high durability against SO2, so that it can remove NOx for relatively longer period of time without being deteriorated by the poisoning induced by SO2 and significantly contribute to the prevention of plugging and corrosion of the downstream of a SCR reactor system.