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복강경 비장보존 원위췌절제술과 복강경 원위췌비장절제술의 비교
강성화(Sung Hwa kang),박관태(Kwan Tae Park),김영훈(Young Hoon Kim),서혜련(Hye Ryun Seo),한덕종(Duck Jong Han),김송철(Song Chul Kim) 한국간담췌외과학회 2008 한국간담췌외과학회지 Vol.12 No.4
Purpose: The purpose of this study is to compare the clinical results of spleen preserving laparoscopic distal pancreatectomy (SPLDP) with en bloc laparoscopic distal pancreatectomy (LDP). Methods: From March 2005 to August 2008, 52 cases of SPLDP and 84 LDPs were performed at our institution and we retrospectively compared these cases. The enrollment period were chronologically divided to four eras of 10.5 months each. Results: The demographics, including the patients’ age, gender and BMI, were not different between the two groups. The final pathologic diagnosis was diverse, and it included cystic tumor, SPT, IPMT, cancer, endocrine tumor, etc and there was no difference between the two groups. The tumor location, operative time, tumor size, perioperative transfusion requirement, the length of the hospital stay and the postoperative complications were not different between the two groups. The mean operative time was gradually shortened by eras (Era 1: 236.3 min, Era 2: 223.6 min, Era 3: 188.8 min, Era 4: 187.9 min) and the proportion of SPLDP was increased by eras from 1.9% to 9.6%, 42.3% and 46.2%, respectively. Conclusion: SPLDP might be technically more difficult than LDP, and especially in the initial learning stage of performing laparoscopic pancreatic surgery. After overcoming the learning curve, SPLDP can be performed safely and possibly within a shorter time. SPLDP should be tried whenever possible so that the patients get the maximal benefits of minimal invasive surgery and especially for resecting the more distal pancreatic lesions.
강성화(Sung Hwa Kang) 철학연구회 2001 哲學硏究 Vol.54 No.-
엘륄이 말하고 있는 기술은 기계나 응용과학과 동일시될 수 없다. 또한 그가 문제삼고 있는 것은 구체적인 특정한 기술들이 아니라, 현대 문화의 중심에 위치한 광대하고 다양하며 편재적인 총체성으로서의 기술이다. 필자는 이 `총체성으로서의 기술`을 엘륄의 기술 정의에서 가장 중요한 핵심이라고 본다. 총체성으로서의 기술은 그가 기술을 하나의 `체계`라고 주장하는 데서 보다 분명하고 강력하게 드러난다. 그는 체계라는 말로 상호 관계하는 요소들의 총체를 강조하고자 한다. 이에 따라 그의 기술 체계는 상호 관계하는 수많은 `하부 체계로서의 기술들`의 총체로 그려진다. 필자는 기술을 하나의 체계로 보는 그의 주장에 난점이 있다는 점을 지적하면서, 동시에 그가 `체계`라는 말을 통해 강조하고자 하는 의도를 이해하고자 한다. 한편, 그가 `체계`로서의 기술과 기술의 `특징들`을 통해 말하고자 하는 최종적인 명제는 `기술은 이제 자율적인 것이 되었다`는 것이다. 여기서 필자는 자율적 기술 개념과 관련해서 제기되는 기술 의인화의 문제, 기술 결정론의 문제를 검토한다. 특히 필자는 엘륄의 `기술 결정론`을 극단적 비관론으로 해석하는 것을 경계하면서, 그것을 올바르게 이해하기 위해 반드시 필요하다고 보이는 몇 가지 단서 혹은 조건들을 제시한다. 이러한 작업을 통해 최종적으로 필자는 엘륄의 `희망`이 유의미하게 논의될 수 있는 하나의 길을 열어 놓고자 한다.
장막 침윤이 없는 진행 위암에서 대망을 보존한 위 절제 수술 후 경과 관찰
김지훈(Ji Hoon Kim),강성화(Sung Hwa Kang),오성태(Sung Tae Oh),육정환(Jung Hwan Yook),김병식(Byung Sik Kim),박건춘(Kun Choon Park) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.76 No.3
Purpose: The generally accepted standard surgery for advanced gastric cancer is gastrectomy with D2 dissection accompanied by omentectomy. Theoretically, advanced gastric cancer without serosa exposure cannot disseminate metastasis to the omentum. However, the significance of routine omentectomy in survival remains unproved. Methods: From January 2000 to December 2002, 174 patients, who diagnosed T2 gastric adenocarcinoma pathologically, underwent curative gastrectomy by one operator. 52 patients underwent omentum-preserving gastrectomy and 122 patients underwent gastrectomy with resection of omentum. We compared clinicopathologic characteristics, recurrence patterns, recurrence rate and survival rates between the two groups. Results: Five-year survival rate was 82.9% in the omentum-preserving group and 85.2% in the omentectomy group (P=0.729). Moreover, there was no significant difference in recurrence rate between the two groups (P=0.298). In the omentum-preserving group, 3 peritoneal (25%), 4 local (33.3%), 4 hematogenous (33.3%), 1 distant lymph node (8.3%) recurrences were shown. However, in the omentectomy group, 7 peritoneal (35%), 6 local (30%), 6 hematogenous (30%), 1 distant lymph node (5%) recurrences were shown (P=0.935). Conclusion: These results suggest that the omentum-preserving gastrectomy may be applicable to advanced gastric cancer without serosa exposure, and that it is not necessary to perform uniform omentectomy for all advanced gastric cancer.
계면활성제가 첨가된 염수용액에 따른 폴리머 애자의 트래킹 성능 평가
조한구,이운용,한동희,강성화,최인혁,임기조,Cho, Han-Goo,Lee, Un-Yong,Han, Dong-Hee,Kang, Sung-Hwa,Choi, In-Hyuk,Lim, Kee-Joe 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.1
Recently, polymer insulators that are used for high voltage applications have some advantages such as light weight, small size, vandalism resistance, hydrophobicity and easy making process. During outdoor service of polymer insulators, the surface of the insulating material is frequently subjected to moisture and contamination that lead to dry band arcing. Their tracking resistance, erosion resistance, end sealing and shed design are very important because dry band arcing causes degradation of polymer surface. Aging test to estimate life property of polymer insulator is executed through several international standard such as IEC 61109 and CEA tracking wheel test, but is not getting clear conclusion yet. There are two methods in the diagnosis method of polymer insulator such as off-line and on-line. The diagnosis methods in off-line are external condition analysis by the eye, contaminant analysis on surface, surface analysis, pollution withstand voltage test, power frequency flashover voltage test, lightning impulse flashover test, tensile fracture load test and flexural load test. Polymer material is also investigated it's tracking resistance by adding surface active agent in IEC 587. In this paper, the tracking performance of polymer insulator with salt solution which is added surface active agent. The diagnosis of insulator sample has been analyzed by leakage current and visual examination, STRI guide and thermal image camera.