http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
해양환경정화용 선박의 중앙개구부 특성에 관한 실험적 연구
김도정(DO-JUNG KIM),박제웅(JE-WOONG PARK),김주남(JU-NAM KIM),정우철(UH-CHUL JEONG) 한국해양공학회 2006 韓國海洋工學會誌 Vol.20 No.2
Moonpool characteristics of a cleaning ship related with the performance of a ship are experimentally investigated. Resistance performances of the ship and flow patterns in the moonpool are observed, in order to determine the effect of different shaped moonpool. The ways to reduce ship pitching motion caused by flows in the moonpool are examined. Experimental results, using a scale model of cleaning ship with moonpool, show that the step arranged in tier under water leads to significant improvements in performance, such as resistance and ship pitching motion. Depending upon the shape of step in the moonpool, the results indicate that the increment of resistance performance may be up to 35%, especially in the case of no step or high step.
45노트급 고속정의 초기선형 개발과 저항성능에 관한 연구
김주남(JU-NAM KIM),정우철(UH-CHEUL JEONG),박제웅(JE-WOONG PARK),김도정(DO-JUNG KIM) 한국해양공학회 2006 韓國海洋工學會誌 Vol.20 No.1
The initial hull form of a 100 ton, 45 knot class high-speed craft is newly developed. The resistance performances are investigated using a model test at high speed in a circulating water channel. The effect of the initial trim is studied together. Wave patterns are observed to clarify the relationship between the resistance performance and the wave characteristics. It can be found that the initial trim plays a role in increasing the resistance performance above a certain velocity.
김도정,박제웅,정우철,김성근,Kim, Do-Jung,Park, Je-Woong,Jeong, Uh-Chul,Kim, Seoung-Gun 해양환경안전학회 2008 海洋環境安全學會誌 Vol.14 No.1
오염된 퇴적물은 연안의 생태계 파괴에 근본적인 원인이 되고 있음에 따라, 선진 외국에서는 1960년대부터 이러한 문제 해결을 위한 새로울 기술개발을 진행하여 오고 있다. 본 연구에서는 유기퇴적물 수거를 위한 시스템 설계 및 개발에 있어서 오탁확산에 의한 2차 오염을 방지하거나 최소화 할 수 있는 Pilot 규모 형태의 흡입식 펌프 준설 시스템을 설계 제작하였으며, 시스템의 성능시험을 통한 적용 가능성을 제시하였다. 시스템 최적화를 위하여 수치해석기법을 통한 퇴적물 수거 시스템의 형상에 대한 성능평가를 수행하고, 제작 시스템의 성능시험에 있어서는 시스템의 정지 상태와 이동 상태에서의 퇴적물 수거 성능에 대한 실험을 수행하였다. 본 연구를 통하여 해저 유기퇴적물의 상부만을 준설할 수 있는 시스템의 개발 가능성을 확인하였다. Contaminated sediments are the actual cause for deterioration of coastal-ecosystem. So the developed countries have been in the process of making an effort to develop new techniques for monitoring and solving this problem since 1960. In this research, suction type pump dredging system of pilot size for collecting the filth from the seabed has been designed and manufactured that can prevent or minimize the secondary pollution by filth diffusion. For the practical use, the application possibility of the developed system has been checked through a system performance test. And, the evaluation of system performance according to the underwater body type has been carried out for system optimization by using CFD. The performance tests for checking the efficiency of sediment collecting system are done under two conditions i.e. when the system is non-operational and when the system is self-propelled. The results of this research showed the possibility of the development of dredging system to remove just the upper parts of filth from seabed.
복수가 동반된 간경변증을 가진 말기 신부전 환자에서 복막투석의 안정성
김정인 ( Jung In Kim ),이정은 ( Jung Eun Lee ),백현정 ( Hyun Jeong Baek ),최성철 ( Sung Chul Choi ),도정호 ( Jung Ho Do ),허우성 ( Woo Seong Huh ),김윤구 ( Yoon Goo Kim ),김대중 ( Dae Joong Kim ),오하영 ( Ha Young Oh ) 대한신장학회 2007 Kidney Research and Clinical Practice Vol.26 No.3
Purpose : When liver cirrhosis patients accompanying ascites need renal replacement therapy because of chronic renal failure (CRF), peritoneal dialysis (PD) can allow direct removal of ascites and prevent anticoagulants use. However, since PD might aggravate hypoalbuminemia and increase chances of peritonitis, clinicians tend to hesitate to apply it to those patients. The aim of the present study is to assess the outcome and stability of PD for the treatment of CRF patient with cirrhosis accompanying ascites. Methods : A retrospective study based on the clinical records was performed in cirrhotic patients with ascites in whom PD was performed for the treatment of CRF and who were followed up at Samsung Medical Center unit, between January 1995 and July 2005. Results : In our study, 15 patients were enrolled. Child-pugh class was worse in non-survival group than survival group (p<0.01). One-year patient survival was 40% in Class C and 75% in Class B, and patient survival differed between Class C and Class B (p=0.0014). Causes of death were terminal liver failure (n=6) and sepsis due to pneumonia (n=1). Total 27 episodes of peritonitis occurred, and the peritonitis rates were 0.91 episodes/patients-year. Conclusion : Although the peritonitis rates turned out somewhat high, the use of PD for the treatment of CRF in patients with liver cirrhosis accompanying ascites seems to be safe and effective. Main cause of death in our study seems to be related to liver disease.
권경진 ( Kyoung Jin Kwon ),김도정 ( Do Jung Kim ),김상섭 ( Sang Seop Kim ),최유빈 ( Yu Bin Choi ),김미정 ( Mi Jeong Kim ),최명신 ( Myeong Sin Choi ),최보경 ( Bo Kyung Choi ),김동섭 ( Dong Sup Kim ) 대한화장품학회 2010 대한화장품학회지 Vol.36 No.3
탈모 방지의 목적으로 사용되는 양모제는 현재 우리나라에서 의약외품이며 약사법으로 관리되고 있다. 최근 탈모에 대한 사회적 관심이 증가하면서 양모제에 대한 수요도 증가하고 있는 실정이지만 양모제는 생약추출물, 비타민류, 보존제 등 다양한 종류의 성분이 혼합되어 있어 분석이 쉽지 않다. 본 연구에서는 양모제의 주성분으로 많이 쓰이는 니코틴산아미드, 덱스판테놀, 살리실산, 초산토코페롤, 니코틴산벤질에 대한 동시분석법을 확립하고자 하였다. 시판 중인 양모제를 구입하여 C18 컬럼, 아세토니트릴과 인산염완충액을 용매로 사용하여 HPLC로 분석하였다. 검출은 자외부흡광광도계를 이용하여 220, 270, 300 nm 파장에서 분석하였으며, 12.5 ∼ 800 μg/mL 농도범위에서 검량선을 작성하였다. 회수율은 액상기제의 경우 97.3 ∼ 103.5 % (상대표준편차 0.9 ∼ 2.8 %), 샴푸기제의 경우 101.9 ∼ 115.9 % (상대표준편차 0.7 ∼ 7.7 %)로 양호한 결과를 나타냈다. 시판중인 검체의 함량 시험결과 기준에 적합하였으며, 본 분석법을 이용하여 품질관리 및 추후 양모제 개발에 유용하게 활용함으로써 우수한 품질의 양모제 유통에 크게 기여할 것으로 기대된다. The hair nourisher products are used for prevention of hair loss and classified as quasi-drug in Korea. As concerns about hair loss has been increased, the demand for hair nourisher products has been growing. It is difficult to analyze their main ingredients because they contain various ingredients including natural plant extracts, vitamins, preservatives and exfoliators. The purpose of this study was to develop and validate simultaneous analytical methods of active ingredients in hair nourisher products such as nicotinamide, tocopherol, salicylic acid, dexpanthenol and benzyl nicotinate by HPLC. The active ingredients were separated on a C18 column by using acetonitrile/ phosphate buffer as a mobile phase, and detected at UV 220, 270 and 300 nm. The calibration curve showed linearity in the range of 12.5 ∼ 800 μg/mL and the recoveries were 97.3 ∼ 103.5 % (RSD 0.9 ∼ 2.8 %) in liquid matrix and 101.9 ∼ 115.9 % (RSD 0.7 ∼ 7.7 %) in shampoo matrix. Validated method was applied to hair nourisher products obtained from distribution market. Fortunately, all samples met their criteria. This study might be expected to provide the method for determining active ingredients in hair nourisher products and lead to promote a rapid market entry.
지속성 외래 복막투석 환자에서 고용량(10,000 IU) Epoetin alfa의 효과에 대한 교차 연구
도정호 ( Jung Ho Do ),김대중 ( Dae Joong Kim ),최소연 ( So Yeon Choi ),도연실 ( Yeon Sil Do ),장은희 ( Eun Hee Jang ),백현정 ( Hyun Jeong Baek ),김정인 ( Jung In Kim ),여호명 ( Ho Myoung Yeo ),최성철 ( Sung Chul Choi ),이정은 ( Ju 대한내과학회 2006 대한내과학회지 Vol.71 No.5
Background: Recombinant human erythropoietin (rHuEPO) is an essential and well-established treatment for renal anemia. Rcently, clinicians have moved toward administration of high dose rHuEPO to reduce the inconvenience and time efficient. We aimed to determine whether high dose subcutaneous (SC) epoetin alfa is as efficient and safe as the usual dose for treating anemia in continuous ambulatory peritoneal dialysis (CAPD) patients. Methods: Twenty-four patients on CAPD were randomly assigned to a high-usual dose group (n=12) and an usual-high dose group (n=12) with a variable interval for 48 weeks. Patients received 10 times treatments by scheduled visiting during Period I lasting 24 weeks and received 4 times treatments by scheduled visiting in Period II lasting 24 weeks by cross-over. The high dose was 10,000 IU and the usual dose was 4,000 IU epoetin alfa regimen. If hematocrit was out of the targeted range, 30~39%, the interval of epoetin alfa was changed within 50% of the previous interval. Results: Fifteen patients, out of 24, completed the study (8 patients in the high-usual dose group; 7 patients in the usual-high dose group). Mean hemoglobin levels at randomization and after 12, 24, 36 and 48 weeks were 10.8±1.1, 11.5±0.9, 11.5±1.5, 11.4±1.5, 11.5±0.8 g/dL, respectively, in high-usual dose group compared with 11.2±0.8, 11.4±1.2, 11.2±0.9, 11.2±1.4, 11.4±0.9 g/dL, respectively, in usual-high dose group. The mean weekly epoetin alfa dosages at randomization and after 12, 24, 36 and 48 weeks were 83.6±38.1, 87.1±35.8, 89.4±34.2, 60.1±25.1, 62.8±30.7 IU/kg/week, respectively, in high-usual dose group compared with 69.8±31.6, 64.9±12.2, 69.9±46.1, 78.8±29.3, 75.9±16.4 IU/kg/week, respectively, in usual-high dose group. No statistically significant differences between the two groups were apparent for hemoglobin levels or mean weekly epoetin alfa dosages. Treatment interval at Period I and Period II were 13.3±5.3, 8.2±4.3 days in high-usual dose group compared with 7.0±2.5, 13.4±4.0 days in usual-high dose group with statistically significant differences. Treatment interval in high dose was about two times as longer as usual dose. Adverse events were generally mild and transient, and pain on injection site following subcutaneous administration was rarely reported. Conclusions: This study demonstrates that epoetin alfa 10,000 IU is as efficient and safe as 4,000 IU with a similar weekly dose in CAPD patients. Epoetin alfa 10,000 IU administration can reduce frequency of injections by about one half.(Korean J Med 71:527-534, 2006)