Papers by Author: Jun Hyuk Seo

Paper TitlePage

Authors: B.S. Jun, H.J. Park, Deug Joong Kim, Hyun Seung Ryu, Jun Hyuk Seo, Kug Sun Hong, Hwan Kim
151
Authors: Jae Hyup Lee, Hyun Seung Ryu, Jun Hyuk Seo, Hwan Kim, Kug Sun Hong, Bong-Soon Chang, Choon Ki Lee
Abstract: The purpose of our study is to compare the biodegradation and osteoconduction between CaO-SiO2-B2O3 glass-ceramics(CS10B) and hydroxyapatite(HA), tricalcium phosphate(TCP). Porous CS10B implants were prepared by polymer sponge method. Single-level posterolateral spinal fusions were performed on thirty rabbits. The animals were divided into three groups by implant material: HA, TCP and CS10B. Radiographs checked every two weeks. All animals were sacrificed 12 weeks after surgery. The proportion of the area occupied by ceramics in final radiography on the initial radiography was calculated. Uniaxial tensile strength was measured on 7 cases in each group. The proportion of the area of HA(88.7%±16.1) was significantly higher than those of the others(p<0.05), and the proportion of the area of CS10B(28.2%±9.3) was significantly lower than those of HA and TCP(37%±9.6)(p<0.05). The mean values of tensile strength of the HA(191.4±33.5 N) and CS10B(182.7±19.9 N) were significantly higher(p<0.05) than those of the TCP(141.1±28.2 N). CS10B showed the tensile strength of fusion masses similar to those of the HA, however, more rapid biodegradation than HA and TCP. These findings suggest that CS10B grafts have the possibility as a bone graft substitute.
905
Authors: Jun Hyuk Seo, Hyun Seung Ryu, K.S. Park, Kug Sun Hong, Hwan Kim, Jae Hyup Lee, D.H. Lee, Bong-Soon Chang, C.K. Lee
147
Authors: Hyun Seung Ryu, Jun Hyuk Seo, Hwan Kim, Kug Sun Hong, H.J. Park, Dae Joon Kim, Jae Hyup Lee, D.H. Lee, Bong-Soon Chang, C.K. Lee
261
Authors: K.S. Park, Hyun Seung Ryu, Jun Hyuk Seo, Kug Sun Hong, Hwan Kim, Jae Hyup Lee, D.H. Lee, Bong-Soon Chang, C.K. Lee
151
Authors: H.J. Park, B.S. Jun, Dae Joon Kim, Hyun Seung Ryu, Jun Hyuk Seo, Kug Sun Hong, Hwan Kim
959
Authors: Jun Hyuk Seo, Hyun Seung Ryu, Kug Sun Hong, Hwan Kim, Dae Joon Kim, Jae Hyup Lee, D.H. Lee, C.K. Lee
273
Authors: Jong Kweon Kim, Jun Hyuk Seo, Yong Bum Park
Abstract: In the present work, a nanocrystalline Invar alloy (Fe-36wt%Ni) foil was fabricated by using a continuous electroforming method. This material exhibited outstanding mechanical properties and a relatively low thermal expansion coefficient as compared to conventional Invar alloys. The as-deposited texture was of fibre-type characterized by strong <100>//ND and weak <111>//ND components. Grain growth occurred during annealing beyond 350°C and resulted in such texture change that the <111>//ND fibre texture strongly developed with the minor <100>//ND components. It was clarified using orientation imaging microscopy that abnormal growth of the <111>//ND grains in the early stages of grain growth plays an important role on the texture evolution. The mechanism of the abnormal grain growth has been discussed in terms of the orientation dependence of energy density.
1313
Authors: M.B. Moon, Jun Hyuk Seo, Yong Bum Park
1209
Showing 1 to 9 of 9 Paper Titles