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김가정(Ka-Jeong Kim),정치영(Chi-Young Jeong),정상호(Sang-Ho Jeong),주영태(Young-Tae Ju),정은정(Eun-Jung Jung),이영준(Young-Joon Lee),최상경(Sang-Kyung Choi),하우송(Woo-Song Ha),박순태(Soon-Tae Park),홍순찬(Soon-Chan Hong) 대한외과학회 2011 Annals of Surgical Treatment and Research(ASRT) Vol.80 No.1
Purpose: With the advancement of laparoscopic instruments and accumulation of surgical technique, laparoscopic liver resection is currently performed for various benign and malignant liver diseases. However, controversies still remain over laparoscopic liver resection for malignant liver diseases including HCC and its oncologic safety is yet to be established. This study aims at determining the safety, feasibility and short-term oncologic outcomes of laparoscopic liver resection performed for HCC. Methods: From July 2008 to March 2010, laparoscopic liver resection was performed at our hospital on a total of 45 patients with various benign and malignant liver diseases. Among these 45 patients, 16 patients diagnosed with HCC were reviewed retrospectively. Results: The mean age of the patients was 59.25, comprising 11 male patients (68.8%) and 5 female patients (31.2%). The location of tumor was left lateral in 7 cases, 4 cases in segment 6, 2 cases in segment 7, 2 cases in segment 5, 1 case in segment 4 and 1 case in caudate lobe. Wedge resection was performed in 11 cases, left hemi hepatectomy in 2 cases, left lateral sectionectomy in 2 cases, caudate lobectomy in 1 case. The mean operative time was 248.75 minutes. The mean hospital stay was 13.8 days, and there were no post-operative recurrences during the post-operative follow-up period. Conclusion: When performed by expert surgeons in selected patients, laparoscopic liver resection for HCC is a feasible and safe procedure.
레진의 경화 반응을 고려한 UV-NIL 공정의 열특성에 관한 실험 및 수치해석 연구
김우송(Woo-song Kim),박경서(Gyeong-seo Park),남진현(Jinhyun Nam),임홍재(Hongjae Yim),장시열(Siyeol Jang),이기성(Keesung Lee),정재일(Jay Jeong),임시형(Sihyeong Lim),신동훈(Donghoon Shin) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11
The process conditions during ultraviolet nanoimprint lithography (UV-NIL) process such as temperature, stamping pressure, UV irradiation, etc. are effective factors for successful imprinting of complex and fine patterns. In this study, the effects of aluminum mold on the thermal characteristics of UV-NIL process were investigated through imprinting experiments and numerical simulations. The temperature of polymer resin on mold was measured to study thermal characteristics during UV curing. From the experimental and numerical results, the importance of curing reaction control for UV-NIL process was discussed for deformation characteristics.
소아에서 발생한 자석 삼킴에 의해 유발된 위장관계 합병증
김가정(Ka-Jeong Kim),주영태(Young-Tae Ju),정치영(Chi-Young Jeong),정은정(Eun-Jung Jung),이영준(Young-Joon Lee),홍순찬(Soon-Chan Hong),최상경(Sang-Kyung Choi),하우송(Woo-Song Ha),박순태(Soon-Tae Park) 대한외과학회 2007 Annals of Surgical Treatment and Research(ASRT) Vol.73 No.4
Because of the magnetic property that attracts magnets to one another, the swallowing of magnets could provoke perforation, obstruction, and formation of fistula in the gastrointestinal tract. Here, the authors describe two cases of gastrointestinal complication caused by swallowed magnets in children. The first case occurred in a 12-year-old boy who swallowed multiple magnetic educational instruments; the patients presented with duodeno-colic and colo-colic fistula. In the second case, a 7-year-old boy swallowed two magnets and developed a jejuno-jejunal fistula associated with perforation of the jejunum. In accidental swallowing of the magnet, especially multiple pieces, the follow-up plain abdominal X-ray film should be checked, and an emergency exploration could be considered.
KPA rating 데이터 보정을 통한 성숙도 설문서(MQ) 선정 모델의 신뢰성 평가
김우송(Woo-Song Kim),이은서(Eun-Seo Lee),이경환(Kyung-Whan Lee) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.1B
소프트웨어 공학이 소프트웨어 시스템에 관한 방법론, 기술 및 툴 등의 유지보수와 개발에 중점을 두어 왔는데 최근에는 프로세스 개선과 프로세스 능력수준의 향상에 초점을 두는 방향으로 발전하면서 CMM 및 SPICE 활동이 증가하고 있다. 이와 같은 심사기법은 대규모의 회사에서 주로 시행되고 있어서 중소규모의 조직을 위한 간략한 심사기법의 도입이 요구되는 있는 상황이다. 본 논문에서 제시하는 심사기법은 CMM 심사를 위한 KPA 설문서의 rating 방법을 응용한 것으로서 SPICE 심사를 받은 국내 기업 중 일부 회사를 대상으로 하였다. 이 방법론에 대한 신뢰성의 평가는 아직 미흡한 상황이다. 이를 위해서 통계학적 접근방법을 도입하였는데 사용된 통계 기법은 상관계수를 통한 가설검정이다. 그 결과 성숙도 설문서(MQ) 선정모델의 적합성을 통계적 기법을 통해서 검증하였다.
김가정(Ka-Jeong Kim),이영준(Young-Joon Lee),주영태(Young-Tae Ju),정치영(Chi-Young Jeong),정은정(Eun-Jung Jung),홍순찬(Soon-Chan Hong),최상경(Sang-Kyung Choi),하우송(Woo-Song Ha),박순태(Soon-Tae Park) 대한외과학회 2008 Annals of Surgical Treatment and Research(ASRT) Vol.74 No.5
Purpose: Chylous ascites is an accumulation of lymphatic fluid within the peritoneal cavity caused by obstruction or rupture of the peritoneal or retroperitoneal lymphatic drainage system. Postoperative chylous ascites is a rare complication of abdominal surgery. In the present study, we analyzed patients who developed postoperative chylous ascites after gastrectomy. Methods: From February 2003 to June 2006, we treated 7 cases of chylous ascites that occurred after gastrectomy for gastric cancer. We reviewed the medical charts of these patients retrospectively. Results: The incidence of chylous ascites after gastrectomy was 1.7%. Mean triglyceride concentration of the ascitic fluid was 437 ㎎/㎗ (range: 128 ㎎/㎗∼816 ㎎/㎗). Total parenteral nutrition and somatostatin were administered to 6 patients, and 1 patient was treated with oral diuretics and serial paracentesis. Conclusion: The incidence of chylous ascites is low, but may increase with more aggressive surgery. Surgeons should consider chylous ascites if the character of drainage is milky. Conservative management is usually effective for the treatment of postoperative chylous ascites. If conservative management fails, surgical management should be considered.
간암의 다단계 발생기전에 관한 연구: 종양형성 과정에서의 생체지표
강정부,김지경,송승희,하우송,Kang, Chung-boo,Kim, Chi-kyeong,Song, Seung-hee,Ha, Woo-song 대한수의학회 2001 大韓獸醫學會誌 Vol.41 No.4
To estalish bio-indices for detection of the development of multistep hepatotumorigenesis, rats were fed water containing 0.01% diethylnitrosamine (DEN) ad libitum for 13-14 weeks. Hepatocellular carcinoma was developed by treatment with DEN, DEN only was able to induce hepatic tumors in rats without any other cocarcinogen. Compared to control group, liver cytosol protein concentration in all treated grous was significantly decreased (p<0.05). From week to week, $20{\alpha}$-hydroxysteroid dehydrogenase ($20{\alpha}$-HSD) activity was increased and the highest activity was observed on the 12th week (p<0.05). In addition, the urine biopterin concentration was also significantly increased compared to control groups (p<0.05) in a time course manner. These results indicated that $20{\alpha}$-HSD activity, urine biopterin and liver cytosol protein concentration might be very useful maker to hepatic tumorigenesis.