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Heo, Gwang Hee,Jeon, Joon Ryong,Lee, Chin Ok,Lee, Gui,Lee, Woo Sang Trans Tech Publications, Ltd. 2006 Key Engineering Materials Vol.321 No.-
<P>This paper presents an effective method of FE model updating for health monitoring of structures by applying ambient vibration. And this method is experimented through damage detection and proved to be valid. Experiment about ambient vibration is performed on cantilever beam, and the dynamic characteristics are analyzed by NExT and ERA. The results of such experiments are compared to those of FE analysis, and this comparison enables us to overcome some errors in experiments and analysis. On the basis of improved results by the comparison, model updating is performed in order to construct a basic structure for health monitoring. For model updating, we employ direct matrix updating method (DMUM) and Error matrix method (EMM) in which ambient vibration is easily applied. The model updating by the methods are again evaluated in terms of error ratio of natural frequency, comparing each result before and after updating. Finally, we perform experiments on damage detection to verify the method of updating presented here, and evaluate its performance by eigen-parameter change method. The evaluation proves that the method of FE model updating using ambient vibration is effective for health monitoring of structure, and some further application of this method is suggested.</P>
약학박사 정 시련 교수 정년퇴임 기념호 : 연구논문(재록) ; 생명과학 : Parathion의 간독성 및 면역독성에 있어서 대사과정의 역할
김대옥 ( Dae Ok Kim ),이상규 ( Sang Kyu Lee ),전태원 ( Tae Won Jeon ),김춘화 ( Chun Hua Jin ),현선희 ( Sun Hee Hyun ),김은정 ( Eun Jung Kim ),문귀임 ( Gui Im Moon ),김정애 ( Jung Ae Kim ),이응석 ( Eung Seok Lee ),이병무 ( Byung Mu 영남대학교 약품개발연구소 2006 영남대학교 약품개발연구소 연구업적집 Vol.16 No.-
결핵성 뇌막염 진단에 있어서 뇌척수액 Adenosine Deaminase 활성도에 관한 연구
배선우(Seon Woo Bae),김원천(Won Tsen Kim),전근재(Geun Jae Jeon),성낙억(Nak Uk Sung),최경규(Kyung Gui Choi),최일생(Il Saing Choi) 대한내과학회 1988 대한내과학회지 Vol.34 No.4
N/A The prognosis of tuberculous meningitis is closely linked to the stage at which treatment is started. The cerebrospinal fluid findings, however, are often ambiguous, It has been suggested by recent investigations that ADA activities in cerebrospinal fluid may help differentiate tuberculous meningitis from aseptic meningitis. In this study, cerebrospinal fluid adenosine deaminase activities were measured in 23 cases of tuberculous meningitis, 9 cases of aseptic meningitis, 9 cases of purulent meningitis, 24 cases of miscellaneous neurologic conditions and 23 cases of normal controls. The results obtained were as follows: 1) The mean ADA activity in tuberculous meningitis was 17.39±10,34 U/L, in bacterial meningitis 7.87±8.52 U/L, in aseptic meningitis 2.83±1.92U/L, in miscellaneous neurologic conditions 2.80±5.61U/L and in control 1,09±0.51U/L. 2) The ADA activitiies in tuberculous meningitis showed significantly higher values than in other groups (P<0.001), 3) Cerebrospinal fluid ADA activities differentiated tuberculous meningitis from those with aseptic meningitis being higher than 4.5U/L in all and higher than 6.5U/L in 96% case of tuberculous meningitis, but lower than 6,5U/L in aseptic meningitis and less than 3.5U/L in normal controls. 4) In tuberculous meningitis, ADA activities showed significant correlation with protein in cerebrospinal fluid (P<0.01), but in other groups, no significant correlation with available routine parameters in cerebrospinal fluid. It is suggested that measurement of ADA activity in cerebrospinal fluid is a available test which is relatively easily performed for diagnosis of tuberculous meningitis, especially differential diagnosis with aseptic meningitis.