PURPOSE: An air wind power generation system using air float tubes, which generates electrical energy using wind force passing through a wind tunnel is provided to float a generation system by injecting air into the air float tubes. CONSTITUTION: An air wind power generation system using air float tubes comprises a wind power generation part(20) and an air float tube(30). The wind power generation...

PURPOSE: A twin-screw extrusion device is provided to make highly extruded products by removing foreign material and solid material. CONSTITUTION: A twin-screw extrusion device comprises a short and long-axis screws(20,30), a casing(10), a driving part(40), a hopper(11), a bypass module(50). The bypass module communicates a mixing part(31) and an extension part(32) of the long-axis screws. Forward...

PURPOSE: A method for producing pyronaridine is provided to produce 7-chloro-2-methoxy-5H-benzo[b][1,5]naphthiridine-10(5H)-one with high yield and high purity. CONSTITUTION: A method for producing pyronaridine of the chemical formula 1 comprises: a step of performing chlorination of 7-chloro-2-methoxy-5H-benzo[b][1,5] naphthiridine-10(5H)-one; a step of binding 7,10-dichloro-2-methoxy-benzo[b][1,...

A pipe connector is provided to maintain water-tightness by forming the one side of packing in double end portions. A pipe connector comprises a pressing wheel(10), a stopper(20), a packing(30), a connecting pipe(40) and a coupling ring(50). The pressing wheel includes a guide rod and a bolt hole, and the guide rod prevents the distortion of the connecting pipe and the pressing wheel when being co...

PURPOSE: A pipe carrying device for a drillship is provided to reduce the whole size of a finger board by variously changing a loading space according to the size of the pipes. CONSTITUTION: A pipe carrying device for a drillship comprises a finger board(200), a pipe rack(230), and a support(240). The finger board is composed of a vertical post(210) and a horizontal post(220) and loads a casing pi...

A file transfer security method and apparatus are provided to filter a transmission file previously in a transmission driver upper layer by filtering information, thereby setting various standards for file transmission security according to a grade. A file transmission security method is performed in a kernel area in which a protocol driver(124) and a network interface device(126) are hierarchical...

A device and a method for supporting mobility of a mobile node by using L2 and L3 addresses are provided to use a L2 trigger function and high speed mobility signaling through a preset control channel, thereby preventing mobility processing delay. An MICS(Mobility Information Control Server)(400) manages permanent address information of nodes connected to an AP(Access Point) and L3(Level 3) addres...

An apparatus for inspecting edge area of a wafer, method using the same, and method for aligning the wafer are provided to improve the accuracy and repetition of rotation center by obtaining an image of a wafer and aligning rotation center. In an apparatus for inspecting edge area of a wafer, method using the same, and method for aligning the wafer, a wafer chuck is mounted on an upper side and is...

In an RFID tag mounting package mounted with an RFID tag and a manufacturing method thereof, in order to have sufficient communication performance without spoiling the design property of the package to which a conductive film is applied, a package (30) is obtained by assembling a structural material (32) in which a metallic film (12) is formed on a base material (11) made of paper or the like. In ...

There is provided a drill bit capable of performing a continuous drilling operation on a high-strength workpiece such as a tempered tile and the like. The drill bit comprises a bit body having a receptor portion formed therein, the receptor portion being filled with a cutting oil; a drilling portion extended from one end of the bit body and coupled to the receptor portion of the bit body to form a...

A LCD (Liquid Crystal Display) device includes a backlight unit, a lower polarizer positioned on the backlight unit, a liquid crystal layer positioned on the lower polarizer, and an upper reflection polarizer positioned on the liquid crystal layer. The upper reflection polarizer is configured such that a regularly arranged metallic lattice is formed on a support this LCD device may give a good mir...