皮膚移植후 壓迫處置를 위한 Resin Mold의 利用

薛正泫 대한성형외과학회 1981 Archives of Plastic Surgery Vol.8 No.1

The Use of pressure therapy has been sucessfully employed as a prophylactic measure to prevent the development of hypertrophic scar and secon-dary wound contraction. We has been employed the pressure bandage, cast splint, jacket and dynamic splint but on the face surgery such as hemangioma and nevus etc is very difficult in fixation and it's management. Recently, I was used the Resin mold on the face for pressure therapy and got relatively satisfectory result.

각종 골대체물질들의 골형성능에 관한 비교연구

설정현,최원희,김정철,홍정수,서동보 大韓成形外科學會 1992 Archives of Plastic Surgery Vol.19 No.4

We studied the bone forming capacity of the various bone substitute materials for the confirmation of bone regeneration with each case i.e Hydroxyapatite(SURGIBON), kiel obne, B.O.P. and bone dust. The bone dust was used for control. In 18 New Zealand white rabbits, four partial thickness bone defects were created on the outer table of parietal bone, which were measured 1.5mm in depth x 8mm in diameter. Bone substitute materials were filled in each bone defect. The animals were sacrified at 2, 4, 6, 8 weeks after taking a plain skull film, and then both macroscopic and microscopic examinations were done. The results were as follows : 1. Hydroxyapatite : good bone regeneration with moderately increased eosinophil. 2. KIEL BONE : no bone regeneration and markedly increased eosinophil. 3. B.O.P. : no evidence of bone growth during postoperative 8 weeks. 4. BONE DUST : persistent osteoblast existed during experimental period, more likely as own bone. We summarized that the hydroxyapatite is a biocompatible matrix implantable as a bone graft substitute and more bone regeneration than other bone substitutes during the experimental period.

Triamcinolone Acetonide가 배양 켈로이드 섬유아세포의 G1 세포주기 관련 유전자 발현에 미치는 영향

설정현,우상현,백원기,서성일,서민호 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.2

The effect of triamcinolone acetonide(TA) on the expression of Gl related genes was investigated the cultured keloid fibroblast. The addition of TA to the culture medium resulted in growth inhibition of keloid fibroblast. TA reduced the expression of cyclin A, B, E and cyclin dependent kinase(CDK) 2 mRNA, but unexpectedly, the expression of cyclin C, Dl and CDK4 mRAN was not affected significantly as compared with those of normal fibroblast. Expressions of p16, p21 and p27, the wellestabilished CDK-inhibitors, were also investigated. The level of p16 was not detected in both normal and keloid fibroblasts and the expression of p27 was significantly decreased in keloid fibroblast. The expression of p21 was dramatically increased in keloid fibroblast but not significantly changed in normal fibroblast. Also the expressions of p53 and pRb, the well known tumor suppressor genes, were increased by the addition of TA. These data suggested that the observed growth inhibitory effect of TA may be related to transcriptional inactivation of cyclin A, B, E and CDK2 and to the transcriptional activation of p21, but the mechanisms of unchanged expression of cyclin C, Dl and CDK4 mRNA remain to be elucidated.

Lower Blepharoplasty時 Skin Flap法과 Muscle Flap法의 比較觀察

薛正泫 大韓成形外科學會 1982 Archives of Plastic Surgery Vol.9 No.2

Aesthetic fewer blepharoplasty is performed to correct deformities of wrinkles, hypertiophy of orbicularis oculi muscle and protrusion of orbital fat in lower eyelids. Today, blepharoplasty has become a commonplace operation by many plastic surgeon, and a number of operative techniques for the procedure has been described, but no one technique is suitable for all patients. The author used two different procedure as skin flap method and muscle flap method according to case by case. The muscle flap method is indicated in young patients with protruding orbital fat and hypertrophy of the orbicularis oculi muscle with marked excess skin, and less ecchymosis and swelling in post operative period compare to skin flap method.

Bilateral Scalp Flap을 利用한 대머리 矯正手術 : -1例 報告- -Report of One Case-

薛正泫 大韓成形外科學會 1979 Archives of Plastic Surgery Vol.6 No.1

The male pattern baldness is a sex-linked dominant gene is responsible for varying degrees of baldness in over 80% of males. Many accept this fact gracefully, while increasing numbers desire treatment for the psychological or simple cosmetic problems associated with baldness. The techniques for correction of male pattern baldness are punch graft, strip graft and local scalp flaps etc, but the scalp flaps is instant good hair density along the anterior hair line. Recently, I was experienced a simplified technique for transposing undelayed bilateral temporal scalp flaps and it is presented here. The use of short, narrow flaps obviates the need for delay procedures, it permits easier closure of the donor sites and got relatively satisfactory result.

배관내에서 난류 마찰 저항감소에 관한 연구

박설현,윤정환,서동표,정대훈,오율권 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.1

Polymer drag reduction can offer a attractive way to utilize ready-made facilities in crude-oil transport system without additional large expenditure. Also, drag reduction in two phase flow can be applied to phase change system such as chemical reactor, pool and pump impeller which occurs cavitation. But the research on drag reduction in two phase flow has not been investigated. Therefore, experimental investigations have been carried out to analyze the drag reduction in the single phase and two phase flow. The objectives of the proposed investigation are primarily to identify and develop high performance polymer additives for fluid transportation. And drag reduction will be evaluated in horizontal flow by measuring void fraction, pressure drop, mean liquid velocity and turbulent intensity

초음파 진동이 가진된 밀폐용기에서 상변화 열전달 특성

박설현,정대훈,오율권 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.1

Solid-liquid phase change (i.e. melting or solidification) occurs in a number of situations of practical interest. Some common examples include the melting of edible oil. metallurgical process such as casting and welding, and materials science applications such as crystal growth. Therefore, due to the practical importance of the subject, there have been a large number of experimental and numerical studies of problems involving phase change during the past few decades. This study presents experimental work on phase change heat transfer. Especially, in order to increase heat transfer rate. ultrasonic vibrations were introduced. The melting cavity contained one vertical heating surface which dissipates heat at constant power and was insulated on the sides. Experimental observations show that the effect of ultrasonic vibrations on heat transfer is very important throughout melting process. The results of this study reveal that ultrasonic vibrations accompany the effects like agitation, acoustic streaming, cavitation, and oscillating fluid motion. Such effects are a prime mechanism in the overall melting process when ultrasonic vibrations are applied. They speed up the melting process as much as 2.5 times, compared with the result of natural melting. Also, energy can be saved by applying ultrasonic vibrations to the natural melting.

Prominent Malar의 교정

최시호,설정현,정영식,이대훈 大韓成形外科學會 1987 Archives of Plastic Surgery Vol.14 No.1

The well defined prominent high cheek bones is classically a sign of beauty in western culture, since the ideal facial configuration is oval and persons with high cheek bones seem to retain their youghful appearance longer than average. But in our cultural background, the persons with prominent malar regions may be unlucky or unfortunate during her or his life andso want to reduce prominent malar regions. We performed reduction malarplasty with various approach methods in 6 patients who complained prominent malar regions with or without prominent zygomatic arch area, and after the operation the patients were satisfied with the results. This article present materials, preoperative check, operative method, result and discussion for the following malarplasty.

Dermo-fat Graft의 臨床的 考察

柳在德,薛正泫,신극선,李英浩 大韓成形外科學會 1976 Archives of Plastic Surgery Vol.3 No.1

The autotransplantation of fat has become a common procedure since Neuber in 1893 first reported the successful use of fat grafts to establish of soft tissue deficiencies, But free fat grafts following transplantation gradually diminished in volume and fail to survive renders their clinical value negligible recently. The dermal grafts alone do not have sufficient bulk, bone and cartilage produce hard material beneath the skin where a soft consistency is more desirable and foreign implants give rise to marble-like structures. We experienced a total 10 cases of autogenous fat graft with overlying dermis (dremofat graft) for soft tissue deficiencies in the face and breast who were admitted to plastic surgery department of Severance hospital during sven years from Jan. 1969 to Dec. 1975. In the author's experience, free autogenous dermofat graft provide the best available grafting materail to substitute for soft tissue deficiencies in the face breast and extremities. So. we presented to this autogenous dermofat graft as compare with foreigner's report.

가토의 하악골 연장에서 잠복기간 단축의 영향

김용하,설정현,최준혁,강무석 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.5

To evaluate the effect of shortening the latent period for distraction osteogenesis, the authors experimented with distraction osteogenesis for a 24-hour latent period in the mandibles of rabbits. This study was carried out on 32 New Zealand white rabbits, each weighting 2000 to 2500 gm. Twenty animals were used for the control group and 12 for the experimental group. A unilateral external fixation device was applied to the left mandible. The mandibles were lengthened at 1 mm per 24 hours for 10 days. Five rabbits from the control group and three from the experimental group by random selection were sacrificed on the first day, and at the second, fourth and eighth week of the consolidation period. After lengthening bone densities at the site of the left mandibular bony lengthening were measured by quantitative computer tomography (QCT) and dual energy x-ray absorptiometry (DXA). As a result, the DXA value showed no difference compared to the control group after two week's consolidation. The trabeculae were thicker and had begun to be surrounded by lamellar bone both in the control and experimental groups histologically. In conclusion, the results of this study indicate that the osteogenetic effect in the experimental group was nearly the same as in the control group. If stable fixation and minimal periosteal dissection were performed during the procedure, the latent period would not be an important factor in distraction osteogenesis of membranous bone.