Abstract: There is provided a multilayer ceramic electronic component, including: a ceramic main body including a dielectric layer; and inner electrodes disposed to face each other within the ceramic main body, with the dielectric layer interposed therebetween, wherein, when an average thickness of the dielectric layer is td and an average thickness of the inner electrodes is te, 0.1 ?m?te?0.5 ?m and (td+te)/te?2.5 are satisfied, and when an average surface roughness on a virtual surface roughness center line of the inner electrode is Ra and an average roughness of ten points of the inner electrode is Rz, 5 nm?Ra?30 nm, 150 nm?Rz?td/2, and 8?Rz/Ra?20 are satisfied. The multilayer ceramic electronic component has excellent reliability by improving adhesion strength between the dielectric layer and the inner electrodes and withstand voltage characteristics.

Abstract: There is provided a multilayered ceramic electronic component capable of securing capacitance by controlling electrode connectivity. The multilayered ceramic electronic component includes: a ceramic main body; and internal electrodes formed in the interior of the ceramic main body and having a central portion and a tapered portion becoming thinner from the central portion toward edges thereof, respectively, wherein the ratio of the area of the tapered portion to the overall area of the internal electrodes is 35% or less. A desired capacitance can be obtained by controlling an electrode connectivity even in the small high capacitance multilayered ceramic capacitor.

Abstract: There are provided a conductive paste composition for an inner electrode, and a laminated ceramic electronic part and a manufacturing method thereof using the conductive paste composition. The conductive paste composition includes metal powder coated with an organosilica compound formed by polymerization of an organosilane compound having a structure of RnSi(OR?)4-n (wherein R is selected from alkyl and aryl groups, each having 20 or less carbon atoms, R? is any one of the alkyl groups having 4 or less carbon atoms, and n is 1 or 2). Since the organosilica coating layer is coated around the metal powder particles, preventing the metal powder particles from being agglomerated, thereby allowing the conductive paste composition having very superior dispersibility to be manufactured. In addition, effects such as inhibited oxidation of the metal powder during plasticization and effectively inhibited shrinkage of the metal powder during sintering may be accomplished.

Abstract: A PSSC complex girder in which a section shape steel structure is formed by joining one or more section shape steel. The PSSC complex girder includes a tension means for tensioning the section shape steel structure with a tensional member so that the structure has a predetermined camber. Concrete is poured in an inner space portion of the section shape steel structure. A strengthening plate for supporting buckling and compression is joined to the section shape steel. A sheer prevention member and steel reinforcement are joined to the section shape steel and the concrete is poured therein. The camber of the PSSC complex girder can be adjusted before or after construction for new bridges and conventional bridges. Deflection of the slab can be easily decreased and cracks caused by flexural deformation can be prevented.

Abstract: A PSSC complex girder in which a section shape steel structure is formed by combining one or more section shape steel, a tension means for tensioning the section shape steel structure using a tensional member so that the structure has a predetermined camber, and concrete is placed in the inner space portion of the section shape steel structure. The PSSC complex girder can achieve all advantages of both the PSC girder and steel girder, since the camber of the girder can be adjusted by applying it to new bridges and conventional ones before or after construction, deflection of the slab can be easily decreased and no crack caused by flexural deformation is occurred. Also, a strengthening plate for supporting buckling and compression is combined to the section shape steel. In addition, a sheer prevention member and steel reinforcement are combined to the section shape steel and concrete is placed.

Abstract: An apparatus for retensing a pre-stress structure. The apparatus includes a tensing apparatus installed at a rear portion of a precast strand support fixing member exposed from both ends of a prestress structure such as a precast beam for repeatedly tensing a precast strand having a stress loss. A checking member provided at the retensing apparatus for visually checking a stress loss in the tensed precast strand for thereby implementing an easier tensing of a reinforcing strand which is needed when fabricating a prestress structure and retensing an internal reinforcing strand even when a prestress loss occurs for thereby repeatedly retensing a deformed prestress structure.