Min Ku
Min Ku Jeon, Daejeon KR
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20130289329 | DECONTAMINATION METHOD OF CLADDING HULL WASTES GENERATED FROM SPENT NUCLEAR FUEL AND APPARATUS THEREOF - The present disclosure relates to a decontamination method and apparatus for cladding hull wastes of spent nuclear fuels, capable of decontaminating a small quantity of spent nuclear fuels remaining on surfaces of the cladding hull wastes and radioactive fission products penetrated into the cladding hulls through an electrochemical dissolution. The method includes inserting the cladding hull waste into an anodic basket, immersing a reference electrode and a cathodic electrode as well as the anodic basket in a molten salt, dissolving a surface of the cladding hull waste by applying a voltage or current to the anodic basket with respect to the cathodic electrode or the reference electrode, removing the anodic basket, and removing a salt remaining on the surface of the cladding hull waste. | 10-31-2013 |
Min Ku Lee, Daejeon KR
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20100102279 | RADIATION SHIELDING MEMBERS INCLUDING NANO-PARTICLES AS A RADIATION SHIELDING MATERIAL AND METHOD FOR PREPARING THE SAME - Disclosed is a radiation shielding member having improved radiation absorption performance, including 80.0˜99.0 wt % of a polymer matrix or metal matrix and 1.0˜20.0 wt % of a radiation shielding material in the form of nano-particles having a size of 10˜900 nm as a result of pulverization, wherein the radiation shielding material is homogeneously dispersed in the matrix through powder mixing or melt mixing after treatment with a surfactant which is the same material as the matrix or which has high affinity for the matrix. A preparation method thereof is also provided. This radiation shielding member including the nano-particles as the shielding material further increases the collision probability of the shielding material with radiation, compared to conventional shielding members including micro-particles, thus reducing the mean free path of radiation in the shielding member, thereby exhibiting superior radiation shielding effects. At the same density, the shielding member has reduced thickness and volume and is thus lightweight. The porosity of the shielding member is minimized, thereby preventing the deterioration of shielding effects and properties of the shielding member and realizing applicability in spent fuel managing transport/storage environments and the like. | 04-29-2010 |
20100124669 | JOINING METHOD BETWEEN Fe-BASED STEELS AND Ti/Ti-BASED ALLOYS HAVING JOINT STRENGTH HIGHER THAN THOSE OF BASE METALS BY USING INTERLAYERS AND THE JOINTS PRODUCED USING THE METHOD - A joining method between Fe-based steel and Ti/Ti-based alloys having a joint strength higher than those of base metals by using interlayers. The production of intermetallic compounds at a joint portion between Fe-based steel and Ti/Ti-based alloys can be prevented using interlayers, and strong interface diffusion bonding can be formed at interfaces between interlayers, thereby producing a high-strength joint. Accordingly, the present disclosure can be used to develop high-strength, high-functional advanced composite materials. | 05-20-2010 |
Min Ku Lee, Seoul KR
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20120003990 | MOBILE TERMINAL AND INFORMATION DISPLAY METHOD USING THE SAME - A mobile terminal includes a communication unit to detect a first device and to receive device information from the first detected device; a memory unit to store a search classification; a control unit to determine class and location information of the first detected device using device information received from the first detected device, and to control a search result to be displayed on a display unit. An information display method using a mobile terminal includes detecting devices within a reference proximity, receiving device information from a first detected device; storing a search classification in the mobile terminal; determining class information and location information of the first detected device, and comparing the class information with the stored search classification; and displaying a determination result. | 01-05-2012 |