술자가 제작한 술전 비치조교정기를 이용한 일측성 구순열의 교정

양정열,조인영,천지선 大韓成形外科學會 2004 Archives of Plastic Surgery Vol.31 No.1

칼슘길항제와 혐수성 산소 라디칼 제거물질이 백서 피부판 생존에 미치는 영향

양정열,임홍철,이명주,서재홍 조선대학교 1994 The Medical Journal of Chosun University Vol.19 No.2

Regulation of Ca^++ channels across cell menbranes can be dramatically altered by ischemic states, and such agents relates to cytotoxic effect. The genration of free radicals in ischemic tssue is detrimental to survive of that tissue. If intracellular calcium increasement and free radical production can be blocked or scavenged, tissue damage should be minimized. In the concept of above theory, the author studied the effect of nifedipine. α-tocopherol known as a calcium channel blocker and hydrohobic scavenger on the random pattern skin flap survical of white rats . Sprague-Dawley rats(N-60) were divided into four groups of control(no medication) , nifedipine(10㎎/ ㎏ /day, I.M.), α-tocopherol(20㎎/㎏/day, I.M.). nifedipine plus α-tocopherol. All of medications were given for 11days from 4days before flap elevation and contnued for 7days after flap elevation. When flap survival rates were measured. Flap tissue was obsered by gross, light microscooc and electron microscopic levels. The results were obtained as follows. 1. Groups treated with nifedipine. α-tocopherol. nifedipine +α-tocopherol showed significant increase of the area of flap survival compared with that of the control group.(P<0.001 in nifedipine group and α-tocopherol, and P<0.01 in nifedipine plus α-tocopherol group.) 2. The flap survival was best improved in the α-tocopherol group. (P>0.05). 3. Skin including dermis after 3 days of Nifedipine plus α-tocopherol group disclosed marked proliferation and dilatations of vessels in the deeper part. 4. Electron micrograph of endothelial cells after 3 and 5 days of Nifedipine and α-tocopherol groups disclosed intact basement membrane, swelling of endoplasmic reticulum and mitochondria. Following the above results. It is suggested that calcium channel blocker and α-tocopherol seem to play a important role which incerase survival of the skin flap.

Slide-Swing Plastyf를 利用한 皮膚缺損의 臨床治驗

梁正熱,李勝遠,陽斗炳 大韓成形外科學會 1985 Archives of Plastic Surgery Vol.12 No.1

Slide-Swing Plasty often offers a favorable means of closing a skin defect. It is a combination of transposition and skin sliding in which the flap employed to close the defect and the defect itself are cut to a round shape. We have covered on 8 cases of secondary round and oblong skin defects resulting from primary excision of the skin lesions by the using fo Slide-Swing Plasty. We describe the experience of Slide-Swing Plasty with a review of literatures.

이하선에 발생한 유육종증의 치험례 : 증례보고

양정열,오형근,류봉수 大韓成形外科學會 1996 Archives of Plastic Surgery Vol.23 No.1

Sarcoidosis is a granulomatous disease of the undetermined etiology. It appears worldwide and is common in the Western Conturies. The prevalence is from 10 to 40 per 100,00 in the United States and in Europe. Sarcoikosis is rare in the Orient except for Japan. Recently, there has been a sharp increase in the number of case reports on sarcoidosis in korea as reported in the korean journal of Dermatology and Korean Journal of Medicine. Therefore, we studied a case of sarcoidosis involving parotid gland in a 45 years-old female. Clinical review and laboratory relationships have confirmed the findings of characteristic noncaseating epitheloid granulomas in biopsied parotid gland and increased serum angiotensin-converting enzyme. In Korea, sarcoidosis was a rare disease, first reported by Koe at all in 1968, however, today it has shown an increasing trend similar to that of Japan. The number of sarcoidosis reported in korea were 33 cases up to 1991, and about 40 cases up to 1994. The patient presented in this paper was the first proved case of sarcoidosis involving parotid gland in Korea. She was treated with superficial parotidectomy and lymph node removal.

My Hopes for 2015: Letter from the President of Korean Cleft Palate-Craniofacial Association

양정열 대한두개안면성형외과학회 2015 Archives of Craniofacial Surgery Vol.16 No.1

대전자부 압박궤양을 가지고 있는 하지마비 환자에서 대퇴골 골절부위에 발생한 비정상적 골증식의 치험례

양정열,천지선 대한성형외과학회 2008 Archives of Plastic Surgery Vol.35 No.1

Purpose: Heterotopic ossification in pressure sore patients is reported to rarely develop, but once it occurs, it frequently causes joint stiffness and mobilization restriction. The aim of this article is to report our experience of atypical bone growing at femur neck fracture site with chronic, extensive pressure sore in patient with paraplegia secondary to spinal injury. Methods: A 28-year-old male patient presented with atypical bone growth at femur neck fracture site with pressure sore. He had undergone atypical growth bone removal and separation of united iliac bone and femur, and then pressure sore was covered by advanced rotation flap.Results: The patient mobilized hip joint and rode in a wheelchair. Complications such as dehiscence, infection, hematoma and flap necrosis did not occur.Conclusion: We experienced successful correction of atypical bone growth removal and recovery of pressure sore. We report our experience of atypical bone growth of fracture site and the related literature was reviewed.

REVERSE DORSAL DIGITAL ISLAND FLAP 이용한 수지부 결손의 재건

양정열,이명주,정상영,류봉수,임홍철 大韓成形外科學會 1996 Archives of Plastic Surgery Vol.23 No.5

Among the digital injuries caused by mechanical damage and physical forces, when skin and soft tissue defects are accompanied, the functional and cosmetic aspects of digits must be satisfied by offering of solid soft tissue, maintaining normal length of digits and restoration of sensitivity of damaged digits and durability for the satisfactory reconstruction of digits damage. Local flap, regional flap, distant flap and free flap have been used as the ways of reconstruction as usual. So then we reconstructed the damaged digits by using Reverse Dorsal Digital Flap in which we could avoid the damage of main volar digital artery, and we could get a get a fast recovery and a satisfactory result in the functional and cosmetic aspects of reconstruction to recover the loss of soft tissue of dorsal, midlateral and tip portion of the digits on the base of anatomical characteristics of the digits, the abundant arterial network among the dorsal branches of volar digital artery. The Reverse Dorsal Digital Island flap has several merits 1)it can avoid distant flap that causes discomforts to patients for a long time, 2)it doesn't need immobilization of damaged digits because of homodigital flap, 3)it is just one-step procedure, 4)it can preserve the volar digital artery and get quick recovery as possible. We reconstructed the damaged digits by using Reverse dorsal digital island flap to the seven patients who had digits soft tissue defects from March, 1995 and got satisfactory results.

습식식각을 이용한 HfO₂ 박막의 식각특성

양정열,황택성,곽노석,임정훈,최용재 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.9

Hafnium oxide (HfO₂) was very advantageous for substitute material of gate on existing transistor. HfO₂has been widely studied due to high contact with polysilicon and thermal stability and also, it is easily etched by using HF solution. In this study, HfO₂and thermal oxide films were etched by wet etch method using chemical etchant. Etch rate of HfO2 and thermal oxide was linearly increased with increasing concentration of HF and temperature but etch rate of HfO₂was higher than thermal oxide due to H^+, F^-, and HF₂- ions at below 0.5% concentration of HF. And also, etch selectivity was improved by adding Hydrazine as additive. HfO₂는 기존의 트랜지스터에 사용되고 있는 게이트 유전막을 대체할 수 있는 물질이다. HfO₂는 폴리실리콘과 접촉성이 높고 열적 특성이 우수하기 때문에 많은 연구가 진행되고 있으며, 또한 HF 용액으로 쉽게 식각되는 특성이 있다. 본 연구에서는 HfO₂및 thermal oxide 박막을 chemical 식각액을 사용하여 식각하였다. HfO₂및 thermal oxide 박막은 HF 농도 및 온도가 증가함에 따라 선형적으로 증가하는 경향을 나타내었지만, HF의 농도가 0.5% 이하일 때는 H^+, F^-, HF₂- 이온들로 인하여 thermal oxide 박막 대비 HfO₂박막의 식각율은 더 높게 나타내었다. 또한 식각 선택비는 첨가제로써 사용한 하이드라진을 첨가함에 따라 향상되는 특성을 나타내었다.

[BRANDED CONTENT LETTER] 양정열 칸타코리아 대표

양정열 중앙일보에스 2022 Forbes Korea = 포브스 코리아 Vol.2022 No.1

인간과 문화 : 성형적 인체미학

양정열 한국문화학회 1998 `98 한국문화학회 학술발표회 Vol.- No.-