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Long-term outcomes of single-port laparoscopic myomectomy using a modified suture technique
( Mina Kang ),( Jihye Kim ),( Tae-joong Kim ),( Jeong-won Lee ),( Byoung-gie Kim ),( Duk-soo Bae ),( Chel Hun Choi ) 대한산부인과학회 2020 Obstetrics & Gynecology Science Vol.63 No.2
Objective To evaluate the long-term outcomes, including the pregnancy outcome and recurrence rate after single-port laparoscopic myomectomy (LM) using a modified suture technique with a Hem-o-lok clip (Choi’s LM) and conventional 4-port LM. Methods A retrospective study of patients who underwent Choi’s LM (n=55) and 4-port LM (n=102) in a single institutional hospital was conducted. Patients with <3 symptomatic myomas sized <10 cm each and operated on by a single surgeon were included. Recurrence was confirmed when a myoma measuring ≥3 cm was detected. Results The patients in both groups had similar demographic characteristics. Single (76.4% vs. 62.7%) and intramural (52.7% vs. 56.9%) tumors were commonly detected in both groups in the mean diameter (6.8±1.5 cm vs. 7.0±1.6 cm; P=0.40). In Choi’s LM, 16 patients (29.1%) needed an additional port; those who were nulliparous and/or had a large leiomyoma more frequently required an additional port (P=0.023 and 0.04, respectively). During a median follow-up period of 69 months, 17 patients (7.1% vs. 14.6%) had recurrence. The size of dominant myomas at recurrence was significantly smaller in patients who underwent Choi’s LM (3.4±0.7 cm vs. 5.7±2.4 cm; P=0.004). All 13 patients in both groups who successfully conceived had a full-term delivery. No major complications occurred during pregnancy. Conclusion Although an additional port was frequently used, the long-term outcomes of patients who experienced recurrence and pregnancy after Choi’s LM were acceptable. Considering its usability, Choi’s LM is feasible for the treatment of uterine leiomyoma.
최덕규,박차훈,김태선 경운대학교 산업기술연구소 2002 産業技術硏究論文誌 Vol.5 No.1(B)
SMD (surface Mount Device : Print된 기판에 부품을 장착)공정은 완전 자동화 시스템이며, 이 작업을 진행하기 위하여 백 수 십여 가지의 부품을 정해진 부품 카트리지에 삽입한 후 자동화 설비는 그에 맞는 부품을 장착하게 된다. 그러나 부품을 카트리지에 삽입하는 작업을 작업자가 하게 되는데 이는 사람이 하는 일이라 Human Error가 발생할 가능성이 높다. 본 논문에서는 Chip Mounter에 센서를 부착하여 카트리지의 탈착 여부를 실시간으로 감시하는 모니터링 시스템과 부품 카트리지에 표시된 정보를 Bar-code Reader로 판독하게 함으로서 SMD Chip 장착 자동화 공정의 부품 혼입 방지 시스템을 개발하였다. 개발한 장비를 현장에 투입, 실 생산활동에 활용하게 하여 해당기업의 생산성 향상에 크게 기여하고 있다.
최낙진,류정호,강봉휘,이광우,이덕동 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1
The semiconductor gas sensors with a tin oxide as the raw material have been generally used to detect gases in the principle of electrical conductivity variation. However, it was difficult to design the gas detection system due to the non-selectivity, the non-stability and the influence of temperature, humidity etc. Therefore, it was proposed NDIR(non-dispersive infrared) method using pyroelectric infrared sensor to overcome the disadvantage of the semiconductor gas sensors. This method has been recently used to detect various gases in industrial parts. It has the advantages of selectivity, stability and responsibility. The gases used in this paper were CO_(2)(carbon dioxide) and HC(hydrocarbon) series. The system was designed with the Intel MCU i8097BH microprocessor. Main topics were to remove interference effect for other gases and to minimize influence for ambient circumstance by using the software and the hardware techniques.
반안면 왜소증 환자의 악골교정술과 골, 진피지방의 동시 이식을 통한 안면부 교정 치험례
최희윤,박봉권,최봉근,안희창,안덕균,류재만 大韓成形外科學會 1999 Archives of Plastic Surgery Vol.26 No.3
Hemifacial microsomia is a common congenital craniofacial deformity involving bone and soft-tissue. Mandibular hypoplasia is the most obvious skeletal manifestation of hemifacial microsomia. In the past, complete realignment of the skeleton was preferred to soft-tissue correction, which was clearly second choice. However, in this study, simultaneous correction of bone and soft tissue deformities were equally important in treatment of hemifacial microsomia. One-stage and simultaneous bone and soft tissue reconstruction is possible and staged operations of the skeleton and soft tissue are no longer necessary, except in special cases. Even in children and adolescents, good results and normal growth potential can be achieved with simultaneous correction of bone and soft tissue.
최낙진,심창현,송갑득,주병수,이윤수,이상문,이덕동,허증수 한국센서학회 2002 센서학회지 Vol.11 No.5
단일 기판위에 온도측정용 Pt 박막과 Pt 히터 그리고 가스 감지를 위하여 순수한 SnO_2 박막과 Pt가 첨가된 SnO_2박막을 설계하고 제작하였다. 제작된 소자는 실내환경가스인 이산화탄소, 프로판 그리고 부탄의 분류에 응용되었다. 동작 온도를 가변하기 위하여 히터의 입력 전압을 사다리꼴로 인가하면서 SnO_2 감지막의 반응특성과 실내환경가스들에 대한 분류여부를 조사하였다. 감지막 반응특성곡선에서 여러 변수들을 추출한 후 주성분분석(principal component analysis : PCA)을 통하여 가스 분류 특성을 검증하였다. Two SnO_2 based sensing films(pure SnO_2 and SnO_2/Pt) and a Pt thin film for temperature sensor on an alumina substrate were designed and fabricated for classifying the indoor environmental gases. By controlling the heating power in the shape of trapezoid, unique four sensing response curves created from both SnO_2 film and SnO_2/Pt film. Then, various parameters were extracted from sensing response curves and carried out principal component analysis(PCA). The results confirm that a sensor array with the proposed operating mode was extremely effective in classifying indoor environmental gases such as CO_2, C_3H_8, C_4H_10.
지역사회의 스포츠 서비스 발전방향이 사회복지에 미치는 영향
최덕묵 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.3
The development of sports service in a regional community can favorably affect social welfare at large. Most of all, in order to make people, young and old, more actively and happily join physical activities in their leisure, a variety of more practical programs of physical education should be planned and formulated. Second, in preparation for the upcoming old-age society, a lot of programs for the aged should be provided for the healthy prolongation of life. Third, the role of service provider should be changed to meet the demands of the times so as to make regional sports service contribute to the welfare of community members. Fourth, the recreational programs for physical rehabilitation for the handicapped should be developed.