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오 경,정영하,김정태,김석권 대한미용성형외과학회 1997 Archives of Aesthetic Plastic Surgery Vol.3 No.1
In the past years skin grafts, local flaps and free flaps have been used in reconstructing skin or sift tissue defects and deformities of the face where primary closure is not feasible. A number of local flaps have been used for reconstruction of facial defects and deformities, but the size of a defect that could be treated in such a way was restricted and the donor site deformity was another problem of local flaps. Introduction of the tissue expansion technique has made it possible to cover even wider defects with neighboring skin and advantageous in facial reconstruction in that such defects can be resurfaced with skin of similar color, texture and thickness, a match superior to that of skin obtained elsewhere. We used tissue expanders in reconstructing defects and deformities of the face(post-burn scar ; 17cases, post-traumatic scar ; 7cases, congenital nevus ; 3cases, total 27cases) from Mar. 1990 to Sep. 1996. We used or croissant type tissue expander for the reconstruction of small-sized scar on medial cheek and to use rectangular type expander for large-sized scar on lateral cheek. Ports are placed under the scar or scalp. Expansion period ranged from 28days to 97days (mean 7weeks) and overinflation (mean 170%) was done. And Various methods are used for prevention of complication. We have made anchoring sutures of the remained capsule to the underlying periosteum for prevention of ectropion. We have got satisfactory results from that aesthetically and functionally, so report the results with a review of the current literature.
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안 태 경,오 세 붕 嶺南大學校 工業技術硏究所 1998 工業技術硏究所論文集 Vol.26 No.1
The behavior of axially loaded pile was analyzed by using FLAC program. Load-displacement curves and distributions along the depth were evaluated appropriately for the measured. The analysis could capture the nonlinearity of load-displacement curve even for unloading and reloading cases, since the unloaded stress paths of fill layer elements occurred on the failure envelop. Futhermore, the measured load transfer curves were compared with the API recommendations and with the calculations from results of the FLAC analysis in order to interpret the transfer behavior between the soil and the pile under axial loadings. It was concluded that the axial behavior of open ended piles at Pusan could be evaluated by stress analysis.
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