Export-led growth and technology transfer

姜哲淳 韓國外國語大學校 經濟經營硏究所 1982 經濟經營硏究 Vol.1 No.1

하부 진피경 피판법을 이용한 유방 축소술

강철순,오재욱 인제대학교 1998 仁濟醫學 Vol.19 No.2

유방 비대라 함은 시대, 문화의 차이에 따라 다를 수 있기 때문에 명확히 규정짓기는 어렵다. 하지만 유방 비대로 인한 유방 축소술의 적응이 되는 경우는 체격에 비해 너무 큰 유방으로 인해 경추 후만증 및 견갑통을 호소하거나 어깨에 홈이 패이며 정상적인 옷을 입을 수 없는 경우이다. 유방 축소술의 여러 방법 중 하부 피라미드형 진피경 피판법은 유두 유륜 복합체의 이동 및 조직 절제량의 조절이 용이하고 술 후 모양이 자연스럽다는 장점 때문에 가장 보편적으로 시행되고 있다. 저자들은 유방 비대증 및 하수를 주소로 내원한 총 10명의 환자에게 예전의 하부 피라미드형 진피경 피판법을 다소 개선한 유방 축소술을 시행하여 만족할 만한 결과를 얻었기에 문헌 고찰과 함께 보고하는 바이다. Hypermastia has always been a serious problem for women, frequently causing physical pain and deformity as well as psychological disorders associated with self image. At present time, there are various techniques of reduction mammaplasty to help women's self esteem. Among these, inferior pyramidal dermal pedicle technique of reduction mammaplasty has some advantages including ease of performance and teaching, good preservation of the neurovascular supply to the nipple, applicability over a wide range of reduction size, and reliable reproducibility. We report ten patients with hypermastia and breast ptosis who underwent reduction mammaplasty and mastopexy using by our modified inferior pyramidal dermal pedicle technique, that is based on the concept of Courtiss & Goldwyn and Georgiade. In conclusion, inferior pyramidal dermal pedicle technique for hypermastia is a valuable technique for the reasons of time-tested simplicity and reliable reproducibility.

3M 미세 혈관 결합기를 이용한 유리 피판술의 임상적 경험

강철순,정성훈,윤성호,김동일 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.1

Recently, there is a increasing tendency in microvascular free flap reconstruction. But microvascular free flap transfer requires much time in mastering the suture technique as well as long operation time. Moreover it carrys the risk for thrombosis and total flap failure. So, these factors have inspired the need for quicker and easier methods for microvascular anastomosis. Since the Nakayama's experimental work on ring-pin anastsmotic device, many experimental and clinical works on mechanical anastomosis system have been developed. Authors have tried 3M microvascular anastomotic device in 25 cases of free flap transfer for the last 3 years. The results are as follows: 1) Mean follow-up period was 5.2 months. 2) Mean time for the vein anastomosis was 5.5 minutes. 3) Survival rate of the flap was 100 %. We got a conclusion that 3M microvascular coupling device can be a safe, fast and reliable adjunct for soft and friable venous microvascular anastomosis.

하부 피라미드형 진피경 피판법을 이용한 유방 축소술

강철순,김동일,정성훈,오재욱,윤성호 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.3

Hypermastia has always been a serious problem for women, frequently causing physical pain and deformity as well as psychological disorders associated with self image. At present time, there are various techniques of reduction mammaplasty to help women's self esteem. Among these, inferior pyramidal dermal pedicle technique of reduction mammaplsty has some advantages including ease of performance and teaching, good preservation of the neurovascular supply to the nipple, applicability over a wide range of reduction size, and reliable reproducibility. We report ten patients with hypermastia and breast ptosis who underwent reduction mammaplasty and mastopexy using by our modified inferior pyramidal dermal pedicle technique, that is based on the concept of Courtiss & Goldwyn and Georgiade. In conclusion , inferior pyramidal dermal pedicle technique for hypermastia is a valuable technique for the reasons of time-tested simplicity and reliable reproducibility.

FCAW의 혼합가스 변화에 따른 용접 모니터링과 특성에 관한 연구

임병철(Lim, Byung-Chul),강철순(Kang, Chul-Soon),박상흡(Park, Sang-Heup) 한국산학기술학회 2014 한국산학기술학회논문지 Vol.15 No.10

본 연구에서는 Atos 60의 시험편에 혼합가스의 변화에 따른 FCA용접을 하였고, 용접특성 분석 위하여 용접공정상의 실시간 모니터링 시스템과 용접 후 기계적 성질을 평가 하였다. Ar 80%+CO₂ 20% 혼합하고 낮은 속도로 용접한 경우 가장 미려한 비드와 스패터 발생이 적게 나타났으며, 반면 CO₂ 100%인 경우 스패터가 많이 발생하는 것을 확인하였다. 정상단락 이 발생하는 저전류 영역으로 혼합가스의 사용에 대한 스패터 발생을 확인 할수 있는 조건이며, CO₂ 100%인 경우 각층의 단락율은 약 2배 이상 높았고, Peak의 분포가 많은 아크의 불안정 상태로 나타났다. 인장시험결과 Ar 80%+CO₂ 20%, Ar 90%+CO₂ 10%, CO₂ 100%의 항복강도는 각각 511MPa, 507MPa, 469MPa 이었으며, CO₂ 100%의 항복강도 보다 각각 약 8.9% 8.1% 향상되었다. 인장강도는 각각 622MPa, 609MPa, 581MPa로 CO₂ 100%의 인장강도 보다 각각 약 7.0%, 4.8% 향상 되었다. In this study, the effect of varying the mixture gas during FCA welding was studied for an Atos 60 test piece. To examine the characteristics of welding, the weldability of the material was checked before welding and online monitoring was performed to examine the mechanical properties after welding. The mixture Ar 80% + CO₂ 20% at low speed gave very elegant beads with very little spatter. 100% CO₂ gave rise to high spatter generation. For Ar 80% + CO₂ 20%, the low current region due to the normal short circuits created spatter, which was more than double for 100% CO₂. This peak distribution occurred due to the instability of the arc. The tensile test result for Ar 80% + CO₂ 20%, Ar 90%+ CO₂ 10% and CO₂ 100% at 511MPa, 507MPa, and 469MPa showed that the yield strength was improved by 8.1 and 8.9% for 80%+ CO₂ 20% and Ar 90%+ CO₂ 10%, respectively, compared to 100% CO₂. The tensile test result at 622MPa, 609MPa, and 581MPa showed that the yield strength was improved by 7.0% for both the mixture gas compared to 100% CO₂.

전두부 외골종 20례의 임상적 경험

정재학,김영환,선욱,황소민,강철순 대한성형외과학회 2006 Archives of Plastic Surgery Vol.33 No.3

Osteoma is benign tumor composed of mature compact or cancellous bone. Generally it is classified as periosteal(or peripheral) osteoma and endosteal(or central) osteoma by its origin. Clinically, periosteal osteoma on forehead is usually asymptomatic. From March 2002 to February 2005, We experienced 20 patients(23 cases) of histologically confirmed frontal osteoma. 20 patients are classified as sex, age, the number of osteoma, size, location and shape. Out of 20 patients, 16 were female and 4 were male in sex and mean age was 46. 18 patients have only one lesion but one patient has two lesions and another patient has three lesions. The size of osteoma varied from 7×5×3mm to 16×14×6mm and mean size is 12×10×5mm. All osteomas were located at midline of forehead and shape of attachment was all sessile type. Surgical excision was superficial ostectomy through direct cutaneous incision or endoscopic approach. we obtained satisfactory result without specific complication.

2013-2017년 한국연안의 생태기반 해수수질 평가 결과

박미옥,이용우,박준건,강철순,김성길,김성수,이석모 한국해양환경·에너지학회 2019 한국해양환경·에너지학회지 Vol.22 No.1

The water quality index (WQI) indicating the environmental status of the coastal area of Korea can be classified into 5 grades. As a result of the evaluation of WQI at 317 stations in the coastal area of Korea from 2013 to 2017, the proportion of I (very good) and II (good) grades have gradually increased since 2014 (>70% of total evaluation stations). Moreover, approximately 92.3% of the coastal area has reached the target seawater quality up to 2026, which has increased by more than 30% compared to 2013. The environmental factors, which cause the eutrophication, display the various characteristics both spatially and seasonally, and they have an impact on the evaluation of the WQI. In the central West Sea ecoregion, the concentrations of DIN and DIP were relatively high in February, resulted in the increase of IV (bad) and V (very bad) grades. In the Korea Strait ecoregion, the bad rate in August was expanded up to 67% due to the effect of lower dissolved oxygen saturation in the bottom layer. Water quality in the coastal regions has been shown to be improving gradually, but the major factors affecting water quality were different for each coastal region. It is necessary to consider the water quality characteristics of each coastal region to systematically manage the marine environment. 생태기반 해수수질 기준(수질평가지수: Water Quality Index)을 적용하여 최근 5년간(2013~2017) 한국연안에서 정점별(317개) 연평균 자료로 수질을 평가한 결과, 수질 I등급(매우좋음)과 II등급(좋음) 비율이 2014년 이후 약 70% 이상으로 점차 증가한 것으로 나타났다. 또한 해역별로 2026년까지 달성해야 할 수질목표의 달성률은 2013년(63.6%)에 비해 2017년(92.3%)에 약 30% 상승하였다. 수질평가지수는 5개의 항목별 점수를 이용하여 계산되며, 해역별 수질평가 결과는 시공간적으로 서로 다른 항목에 의해서 영향을 받는 것으로 나타났다. 서해중부생태구에서는 2월에 부영양화 원인물질(DIN, DIP)의 농도가 높게 나타났고, 이로 인해 수질 IV(나쁨), V(아주나쁨)등급의 비율이 약 56%로 높았다. 대한해협생태구에서는 8월(하계)에 주로 저층산소포화도의 영향으로 IV등급의 비율이 약 67%로 높게 나타났다. 해역별 수질 평가 결과는 수질이 점차 개선되고 있는 것으로 나타났으나, 해역별로 수질 평가 결과에 영향을 미치는 주요 요인이 다르게 나타나고 있어 해역별 수질 특성을 고려한 체계적인 관리가 필요할 것으로 판단된다.