• 대한골관절종양학회지
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• 제1권2호
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• pp.244-248
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• 1995

사구종 환자 8례중 단순 절제만으로 전례에서 동통 소실과 함께 종괴 제거 후 세심한 조상 봉합을 함으로써 손톱의 변형을 최소화 할 수 있었고, 수술시 손톱을 완전히 제거하지 않고 다시 제 위치에 고정함으로써 수술후 창상치료가 간편하였으며, 환자가 조기에 손가락을 사용하는데 불편함을 최소화 할 수 있었다.

• Journal of Korean Biological Nursing Science
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• 제14권2호
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• pp.122-128
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• 2012

Purpose: This study was aim to examine the effect of extract from several herbs on wound treatment which are grown naturally in Namwon province. Methods: Adult male Sprague-Dawley rats were assigned to 6 of 2 group: control group (C, n=6), experimental group (E, n=6). Rats in E group had 3 sessions (everyday) for 4 days or 8 days of the extract treatment which was composed of German chemomile, Teatree and Lavender (CTL). Results: CTL extract on wound-induced mice showed significantly the increase of wound treatment rate (WTR), epidermal gap (EP) and collagen density (CD), compared with control. Conclusion: CTL extract may be a putative resources for cure or treatment of wound.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2006년도 추계 학술대회
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• pp.51-56
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• 2006

이 연구에서는 의료서비스 품질 향상을 위하여 제안된 뇌 전위적 영상안내에 의한 개두술 방법과 옥틸 시안화 아크렬산염 (2-octylcyanoacrylate: 2-0CA)을 드레싱 재료로 사용한 조사군과, 전통적 개두술 방법과 봉합사 및 아이오다인을 사용했던 대조군과 비교를 실시하여 의료품질 향상 효과를 분석하였다. 연구방법으로는 특정 의료기관에서 26 례 조사군과, 38례 대조군을 대상으로, 임상적 특성, 감염균, 두피접착의 열개(裂開)성 및 기타 위험 인자를 조사하였다. 연구결과 새롭게 제안된 의료용 재료인 2옥틸시안화 아크릴산염은 피부조직 속으로 외부 액체가 유입되는 것을 억제하거나 제한하였으며, 외피 접착기능으로 창상보호 특히, 평균감염률과 감염빈도에 있어서 상대적으로 대조군보다 우수하였다. 한편 뇌 전위적 영상 안내에 의한 개두술 방법으로 수술시간의 단축과 수술 복잡성의 경감 및 위험성이 감소되었으며, 상처 부위 흔적이 적게 남는 등 미용적인 측면에서도 우수한 것으로 나타났다.

• Archives of Plastic Surgery
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• 제32권2호
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• pp.267-270
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• 2005

The two major concerns in skin grafting are poor color match at the recipient site and donor site morbidity. To overcome the limitations of the classic skin graft, we have used dermis graft-deepithelialized split thickness skin graft-for coverage of small to medium sized wounds. The important aspects of this methods involve the immediate return of epidermis to the donor site to overcome donor site morbidity and restoration of the epidermis at the recipient site by neo epithelization from the adjacent skin. From April of 2001 to July of 2003, the dermis graft was applied to 32 patients. Simultaneously, the regular split thickness skin graft procedure was performed in 33 patients. We compared the healing time in all patients. The scar condition was also evaluated at 2 to 12 months after operation. The entire dermis grafts were reepithelialized in 15.5 days. The skin grafted wounds were healed by 11.8 days. Regarding the donor sites, donor sites of dermis graft healed within 7.5 days. On the contrary those of regular skin graft required 12.8 days. The donor sites of the dermis graft were also superior to those of skin graft in scar quality and patient satisfaction. The dermis graft technique for wound coverage compares favorably to regular skin graft technique in both recipient and donor sites aesthetically and functionally.

• Archives of Plastic Surgery
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• 제35권5호
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• pp.491-494
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• 2008

Purpose: When deciding a treatment plan in diabetic foot ulcer patients, predicting a possibility of healing wounds is important since not a few patients have poor general condition to get successful wound healing. This study was planned to find out if a serum collagen level can be used as a predictor for healing wounds in diabetic foot patients. Methods: Fifty-seven patients, who visited our clinic from January to June, 2007 for treatment of diabetic foot ulcers, were included in this study. Serum levels of type I collagen were checked using carboxy terminal type I propeptide kits. Simultaneously serum levels of vitamin C and iron, cofactors of collagen synthesis, were checked. The patients were divided into two groups; a group of successfully healed wounds and the other of unhealed wounds. Serum levels of the parameters were compared between the 2 groups. Results: The serum level of collagen was $197.65{\pm}86.26ng/ml$ in a healed group and $87.91{\pm}28.76ng/ml$ in the unhealed group(p<0.05). The serum iron and vitamin C levels were did not show significant differences. Conclusion: The serum collagen level may predict healing or nonhealing wounds in diabetic foot ulcers.

• Journal of Chest Surgery
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• 제34권2호
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• pp.133-137
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• 2001

배경: 하지에 영향을 미치는 죽상경화증은 복부대동맥과 이에 중요분지인 총장골동맥을 침범할 수 있다. 또한 국소분절을 침범할 수 있으나 다중분절은 침범할 수도 있다. 대상 및 방법: 을지의과대학교 흉부외과학 교실에서는 1995년 1월부터 1999년 12월까지 대동맥총장골동맥의 죽상경화증을 주소로 우회술을 시행받은 23례의 환자들을 후향적으로 조사하였다. 결과: 모든 환자는 남자였고 평균연령은 60.15$\pm$8.7세였다. 전 예에서 흡연의 과거력이 있었으며 동반질환으로 당뇨병 8례, 고혈합 7례, 관상동맥질환 6례, 그리고 판막질환 1례였다. 대동맥장골동맥 죽상경화증에 대한 수술방법으로는 대동맥양측대퇴동맥 우회술(7례), 대동맥양측동맥 우회술 및 대퇴동맥슬와동맥 우회술(8례), 대동맥양측대퇴동맥 우회술(2례), 액와대퇴동맥 및 고고동맥 우회술(3례), 고고동맥 우회술(3례)였다. 훌후 합병증으로 후복막상 출혈 3례, 마비성 장폐색 3례, 폐렴3례, 뇌졸중 1례, 급성신부전 2례, 창상감염 2례였다. 해부학적 우회술을 받은 환자중 3례에서 수술 사망이 발생하였다. 결론: 해부학적 우회술은 대동맥장골동맥의 폐쇄성질환에 표준적인 수술방법이지만 또한 해부학적 우회술 역시 술후 유병률 및 사망률이 낮은 좋은 수술법으로 사료된다.

• Journal of Chest Surgery
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• 제30권3호
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• pp.340-343
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• 1997

대동맥벽내 혈종은 진성 대동맥박리증과 구별되는 질환으로 아직 정확한 예후나 치료지침이 알려져 있지 않다. 저자들은 57세 여자환자에서 상행대동맥에 발생한 대동맥 벽내 혈종 1례를 수술 치험하였다. 환자는 질식감과 함께 심한 전흉부동통이 견갑골간으로 전파되는 것이 주소였다. 술전 흉부 전산화 단층왈영에서 흉부대동맥전체와 복부대동맥 일부의 대동맥 벽내에 초생달 형태의 혈종이 관찰되었고, 내벽의 파열 은 관찰되지 않았다. 저자들은 완전순환정지와 역행성 뇌 순환하에서 상행대동맥 치환술을 시행하였다. 우측관상동맥입구 의 손상이 있었으나 복재정 맥을 이용한 우회문합술로 수술하였다. 환자는술후4주만에 퇴원하였으며, 창상감염, 심낭삼출액 등의 합병증외에는 심각한 합병증은 없었다.

• 전기학회논문지
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• 제67권1호
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• pp.137-141
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• 2018

The voltage drop is important in electric railway for feeding a huge power of train on fixed feeding area. Nowadays it is tried to operate a high speed trains on conventional lines and there is problem on the voltage drop too. It is simulated on the conditions increased the turn ratio of trolley, installed autotransformer neutral line with variable taps. In result, it is compensated the voltage drop between ATs and better on last AT, not on the position of AT. And it is decreased a return current and neutral current of AT because of unbalance between trolley and feeder. It should be studied faster and more controllable the solid state switchs instead of the mechanical one in order to utilize this system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 추계학술대회 논문집 전력기술부문
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• pp.411-413
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• 2006

This paper presents a novel fault location scheme on Korean AC electric railway systems. On AC railway system, because there is a long distance, 40 km or longer, between two railway substations, a fault location technique is very important. Since the fault current flows through the catenary system, the catenary system must be modeled exactly to analyze fault current magnitude and fault location. In this paper, before suggestion for the novel scheme of fault location, a 9-conductor modeling technique that includes boost wires and impedance bonds is introduced, based on the characteristics of Korean AC electric railway. After obtaining a 9-conductor modeling, the railway system is constructed for computer simulation by using PSCAD/EMTDC. By case studies, we can verify superiority of a new fault location scheme and suggest a powerful model for fault analysis on electric railway systems.

• 약학회지
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• 제40권4호
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• pp.411-417
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• 1996

Epidermal growth factor(EGF), a potential healing agent for wounds and burns, has been formulated to topical gels with the hydrophilic polymers, Carbopol 934P. Physicochemical c haracteristics of the aqueous gels were evaluated by rheological properties and pH changes on storage. The gels were relatively stable at $4^{\circ}C$ and room temperature showing no changes in pH for two weeks, and revealed the rheogram of shear thinning plastic flow with the yield values in the range of 40 to 70dyne/$cm^2$. In vivo healing effects of different gel formulations have been compared with water-soluble and oleaginous ointments in full-thickness wound mouse model. The gel systems resulted in better wound healing effects than the other ointments. Furthermore, liposomal Carbopol gel has been developed by the addition of EGF-containing liposomal suspension into the Carbopol gel. The enhanced wound healing effects have been observed in the liposomal gel system, compared to the other gels and conventional ointments.