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김동수(D. S. Kim),이원희(W. H. Lee),임현의(H. E. Lim),박용두(Y. D. Park),이규백(K. B. Lee) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
In this study, we used th ESD method to prepare th protein microarrays for observation the stem cell responses to pattern size space and shapes. The ESD method allows a reduction in spot size, high efficiency of substance transfer, and high rate in fabrication as a result of ability to simultaneously deposit thousands of identical spots. Typical electrospraying conditions for the deposition of proteins were a voltage of 3~5 keV and the humidity under 30%. The patterns of masks have a variety of shapes, spaces, and hole sizes from 10 um to 300㎛. Three kinds of proteins(collagen, fibronectin, and vitronectin dissolved in PBS) are deposited in a dry state, preserving the functional activity of proteins. Stem cells were cultured on each protein patterned sample at 37℃ for 1 day.
3차원 디지털 펫 (Digital Pet) 기반 메신저로 구현한 유비쿼터스 응용 서비스
오은혜(Grace Oh),서주홍(J.H. Seo),김준호(J.H. Kim),이규백(K.B. Lee),박선지(S.J. Park),오주민(J.M. Oh),신승봉(S.B. Shin),최영일(Y.I. Choi),최정희(J.h. Choi),류대현(D.H. Ryou),신승중(S.J. Shin),나종화(J.W. Na) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅲ
유비쿼터스 컴퓨팅 개념을 게임과 애니매이션 그리고 메신저에 응용한 3-D Pet Messenger (3PM)을 설계하고 개발하였다. 요즘 검색엔 진과 뉴스 서비스를 주로 제공하던 포털들이 메신저를 기반으로 하는 포털로 변신하고 있다. 3PM은 일상적인 메신저 기반포털(Portal)을 유비쿼터스 컴퓨팅 개념과 육성 시뮬레이션 게임을 접목시켜서 발전적인 새로운 형태의 메신저를 지향하고 있다. 육성 시뮬레이션 게임에서는 3-D Pet을 양육하는 게임으로서 사용자가 자신의 사이버 애완동물을 다른 사용자에게 보낼 수도 있다. 만일 사용자가 다른 컴퓨터로 이동하면, 그 사이버 애완동물도 그 사용자를 따라가서 필요한 최신의 정보를 제공할 수 있도록 제작되었다. 유비쿼터스 개념에 기반을 둔 메신저와3-D 애완동물을 이용한 육성 시뮬레이션 게임이 통합되도록 시스템이 설계되었고, Visual C++ /MySQL/OpenGL/3Ds Max 등의 도구들을 이용하여 시작품을 제작하였다.
혈액투석치료를 받은 외과적 급성 신부전 환자의 임상 양상과 예후인자
박훈기(Hoon Ki Park),김동진(Dong Jin Kim),박경식(Kyoung Sik Park),강성원(Sung Won Kang),문창훈(Chang Hoon Moon),이규백(Kyu Baik Lee),김향(Hyang Kim),구자룡(Ja Ryong Koo),이영호(Young Ho Lee),장미경(Mi Kyoung Chang),권영주(Young Ju K 대한내과학회 1996 대한내과학회지 Vol.50 No.4
N/A Objectives: Acute renal failure continues to be a significant cause of postoperative morbidity and mortality, especially after operations or trauma. Post- operative renal failure carries a mortality rate over 50%. We had two goals-to identify preoperative and intraoperative risk facors for postoperative acute ranal failure in patients groups undergoing various types of surgery, and by the use of multivariate analysis, to assess the relative important of these risk factors to provide a means of estimating the probability of survival in an individual patient. Methods: Data review was carried out for the 68 adult patients with ARF treated at 6 hospitals over a 3-year period(January 1991-December 1993). These patients were surgical patients who developed ARF in the postoperative period and subsequently underwent hemodialysis. Thirty-five factors to be of potential relevance to the outcome in postoperative acute renal failure were tabulated and analyzed. Results: 1) The ratio of male to female was 2:1, and the mean age was 51±17 years. The prevalence reached peak over 60 years. The mean death rate, numbers of hemodialysis, duration of oligura, numbers of organ failed, interval from ARF to recovery and interval from ARF to death were 63%, 9±0.8, 11±1 days, 1.7±0.2, 28±2 days, 19±3 days respectively. 2) The complications which developed during ARF included pulmonary complication(57%), hypotension (51%) and sepsis(32%), etc. 3) In findings related to operation, the mean duration of operation, interval from operation to ARF, numbers of transfusion during operation, frequency of hypatension during operation and duration of hypotension during operation were 211±126 min, 3.5±4 days, 23±3pints, 55%, 39.95±8.84 min respectively. 4) In the univariate analysis, hypotension, pulmonary complication, numbers of organ faild, pH (pH<7.2 or pH>7.55), APACHE II score, sepsis, duration of operation and duration of hypotension during operation were the only factors among 35 risk factors that significantly correlated with post- operative acute renal failure. In the multivariate analysis, the only significant risk factors for postoperative renal failure were hypotension and the presence of underlying disease. Conclusion: From the above results. The physician caring for the postoperative ARF patient may depend on these risk factors to predict morbidity and mortality. Whether or not these factors help to prevent the severe morbidity and mortality associated with postoperative renal failure remains to be studied prospectively.