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대응출력 150마력 및 240마력 터보차저 선박용 디젤기관의 동력성능 및 배출특성 비교에 관한 연구
이민형(Minhyoung Lee),정경철(Gyeongchul Jung),이기봉(Kibong Lee),이원욱(Wonuk Lee),이치우(Chiwoo Lee) 한국자동차공학회 2013 한국자동차공학회 지부 학술대회 논문집 Vol.2013 No.4
This is a thesis about the experiment of comparison characteristic of power and exhaust gas in the same condition between diesel engine that is equipped turbocharger different from response power to increase effectiveness of the engine which is recently used in a lot of industry which requires high power. Resulting of the experiment with natural aspiration diesel engine and turbocharger diesel engine, difference in low speed is not significant, but in high speed, effectiveness of turbocharger diesel engine is much higher than the other one. In other hand, in exhaust gas experiment, turbocharger model exhausts more NOX and O₂, but it doesn’t significantly affect the result when it comes with decreasing of CO₂ and effectiveness of increased power characteristic. As a result, the turbocharger diesel engine is economically effective comparing with the natural aspiration diesel engine.
대응출력 200마력 선박용 과급기에 의한 디젤기관의 배출특성 연구
이기봉(Kibong Lee),이원욱(Wonuk Lee),이민형(Minhyoung Lee),이치우(Chiwoo Lee) 한국자동차공학회 2013 한국자동차공학회 지부 학술대회 논문집 Vol.2013 No.11
This is a thesis about the experiment of comparison characteristic of exhaust gas in the same condition between diesel engine that is equipped response power 200HP turbocharger to increase effectiveness of the engine which is recently used in a lot of industry which requires high power. Resulting of the experiment with natural aspiration diesel engine and turbocharger diesel engine, difference in low speed is not significant, but in high speed, effectiveness of turbocharger diesel engine is much higher than the other one. In other hand, in exhaust gas experiment, turbocharger model exhausts more NOX and O2, but it doesn’t significantly affect the result when it comes with decreasing of CO2 and effectiveness of increased power characteristic. As a result, the turbocharger diesel engine is economically effective comparing with the natural aspiration diesel engine.
대응출력에 따른 선박용 과급기에 의한 디젤기관의 배출특성 비교 연구
이민형(Minhyoung Lee),이기봉(Kibong Lee),이원욱(Wonuk Lee),이치우(Chiwoo Lee) 한국자동차공학회 2013 한국자동차공학회 지부 학술대회 논문집 Vol.2013 No.11
This is a thesis about the experiment of comparison characteristic of exhaust gas in the same condition between diesel engine that is equipped turbocharger to increase effectiveness of the engine which is recently used in a lot of industry which requires high power. Resulting of the experiment turbocharger diesel engine according to response power, difference in low speed is not significant, but in high speed, effectiveness of turbocharger diesel engine is almost the same in four turbocharger. In other hand, in exhaust gas experiment, high response power turbocharger model exhausts less NOX, but it doesn’t significantly affect the result when it comes with decreasing of CO2 and effectiveness of similar power characteristic. As a result, the high response power turbocharger diesel engine is economically effective comparing with the low response power turbocharger diesel engine.
Kim, Chiwoo,Choi, Young Bae,Lee, Ji Won,Yoo, Keon Hee,Sung, Ki Woong,Koo, Hong Hoe The Korean Pediatric Society 2018 Clinical and Experimental Pediatrics (CEP) Vol.61 No.2
Purpose: Although the prognosis is generally good in patients with intermediate-risk neuroblastoma, no consensus has been reached on the ideal treatment regimen. This study analyzed treatment outcomes and toxicities in patients younger than 18 months with stage 4 MYCN nonamplified neuroblastoma. Methods: We retrospectively analyzed 20 patients younger than 18 months newly diagnosed with stage 4 MYCN nonamplified neuroblastoma between January 2009 and December 2015. Patients received 9 cycles of chemotherapy and surgery, with or without local radiotherapy, followed by 12 cycles of differentiation therapy with 13-cis-retinoic acid. Chemotherapy consisted of alternating cycles of cisplatin, etoposide, doxorubicin, and cyclophosphamide (CEDC) and ifosfamide, carboplatin, and etoposide (ICE) regimens. Results: The most common primary tumor site was the abdomen (85%), and the most common metastatic sites were the lymph nodes (65%), followed by the bones (60%), liver (55%), skin (45%), and bone marrow (25%). At the end of induction therapy, 14 patients (70%) achieved complete response, with 1 achieving very good partial response, 4 achieving partial response, and 1 showing mixed response. Nine patients (45%) received local radiotherapy. At a median follow-up of 47 months (range, 17-91 months), none of these patients experienced relapse, progression, or secondary malignancy, or died. Three years after chemotherapy completion, none of the patients had experienced grade ${\geq}3$ late adverse effects. Conclusion: Patients younger than 18 months with stage 4 MYCN nonamplified neuroblastoma showed excellent outcomes, without significant late adverse effects, when treated with alternating cycles of CEDC and ICE, followed by surgery and differentiation therapy.
저위합류 담낭관을 가진 환자에서 잔여 담낭관석에 의해 발생한 Mirizzi syndrome의 내시경적 치료 1예
송치우 ( Chiwoo Song ),손병관 ( Byoung Kwan Son ),최재혁 ( Jea Hyuk Choi ),김동신 ( Dong Shin Kim ),김세종 ( Sae Jong Kim ),민향기 ( Hyang Ki Min ),김상혁 ( Sang Hyuk Kim ),이기영 ( Ki Young Lee ) 대한췌담도학회 2017 대한췌담도학회지 Vol.22 No.1
Mirizzi syndrome is a rare complication, resulting in bile duct obstruction and jaundice that usually arise from impacted gallstone in the cystic duct or neck of the gallbladder. It is vitally important to confirm underlying cystic duct anomaly in Mirizzi syndrome since it can produce surgical difficulty and higher complications. Generally, Mirizzi syndrome is treated surgically while endoscopic treatment is limited. Herein, we present Mirizzi syndrome with low lying cystic duct and remnant cyst duct calculi treated successfully by biliary stent and administration of choleretic agent, following by balloon dilatation on cystic duct and balloon extraction of the stone.