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성경 대퇴골에 매식된 Titanium Plasma Spray 및 Hydroxyapatite 피복임프란트 주위의 골치유 양상
허기남,정현주,Huh, Ki-Nam,Chung, Hyun-Ju 대한치주과학회 1995 Journal of Periodontal & Implant Science Vol.25 No.2
The effect of the hydroxyapatite coatings on Titanium implants has been the subject of recent investigations. So far, the use of HA coating remains substantially controversial.This study was aimed to evaluate histologically the bone healing patterns around titanium plasm sprayed(TPS) amd HA-coated implant after implantation into the femur neck of ten adult dogs. After implantation, animals were sacrificed at the intervals of 2,4,6,8 and 12 weeks.The fluorescent dyes were injected on the postoperative 4th and 12th week into the animals supposed to be killed at the 12th week. The morphology and direction of new bone formation was similar in both TPS and HA-coated implants.There was a tendency toward more bone formation in the cortical bone area than in the cancellous bone area. Histologically,in the interface of the HA-coated implants, bone response and bone maturation was faster, compared to the TPS implants in the 2nd and 4th week. By fluorescent microscopy, new bone formation was active in the 4th week around both implants and was directed from the periosteum overlying cortical bone to the cancellous bone. These results suggest that the bone formation and maturation is faster during the early healing stage in the interface of the HA-coated implant and where the cortical bone quality is poor, HA coated implant is superior to the TPS implant in the early phase of new bone formation.
허기도 東義大學校産業技術開發硏究所 1994 産業技術硏究誌 Vol.8 No.-
The city of Pusan is the largest harbour in Korea and it roles not only the pivotal city of south-east economic zone in Korea but on advanced base for the pacific rim block. In this study the volume and floor area of buildings and their uses to angalyse the internal structure of subcenter in the sumaon Pusan was examined. The floor use of central function was utilized to deliminate the subcenter area and to calculate the central business index. This study aims to find out internal structure of subcenter in the sumaon area Pusan and intends to suggest improving directions for effective land use in the sumaon subcenter area.
허기중 ( Ki-joong Huh ),김혜선 ( Hye-seon Kim ),김한응 ( Han-eung Kim ),황선철 ( Seon-cheol Hwang ),최준기 ( Joon-ki Choi ) 한국고등직업교육학회 2002 한국고등직업교육학회논문집 Vol.3 No.4
This paper describes a method to design and construct a virtual education system(VES) of Induk Institute of Technology. Four main concepts were considered to design our VES. The first concept is the designer of lectures that is able to establish a strategy for effective lectures. The second is the consideration for students who should study hard and check processing status themselves. The third is how to design and compose virtual educational contents. And the last concept is how to set up the central systems and how to manage them. Our VES was designed and is being consturcted based on the above concepts successfully.