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이정석,이선동,Lee Jung-Seok,Lee Sun-Dong 대한예방한의학회 2004 대한예방한의학회지 Vol.8 No.1
We have conducted questionnaire and measured serum liver function tests on 153 patients whom have received a treatment at a local Oriental medicine clinic in Seoul from Sept. 1, 2002 to Dec. 31, 2002. Patients were categorized into the groups of control(10), decoction group(41), herbal group(5), western medicine group(45), and the group taking both herbal and western medicines(55) concurrently or separately. This study was conducted to investigate how these treatment methods can affect the liver functions. Following results were obtained : 1) Most of the research subjects were male(l03 individuals) living in large urban area, with drinking habit, highly educated, and with normal marriage. For the treatment history, 45 individuals received western medicine treatment(28.85%), 46 with Oriental medicine (29.49%), and 55 patients(35.26%) experienced both forms of treatment. 2) Measuring SD of serum liver functions for all the research subjects, T-protein was 6.95(0.73)g/dl, 4.07(0.51)g/dl for albumin, 0.44(0.19)mg/dl for T-bilirubin, 23.18(18.68)U/L for ALT, 27.42(27.43)U/L for AST, and 22l.27(64.58)mg/dl for LDH. 3) Among the research subjects with the liver functions outside of normal range were 0.64% for T-protein, 3.21% for T-bilirubin and ALT, 36.62% for AST, 0.64% for LDH, and none for Albumin. 4) Confusion variables which may affect the liver functions such as age, smoking, drinking, occupation, and residence were eliminated in calculation and no significant differences were witnessed between the control and experiment groups. 5) In measuring affects of treatment duration on the liver functions, no statistical significances were shown in multiple regression's ,${\beta}$(SE) values. 6) The values of odd ratio in the experiment groups compared to the control were in the range of $0.26(0.22){\sim}0.62(1.23)$. but T-bilirubin of the group receiving both Oriental and western medicine was 1.47(1.90) which showed statistical increase(p<0.001). 7) Factors affecting the liver functions are drinking volume per round duration of alcohol intake, western medicine treatment, gender, and age difference caused significant influences. 8) 57 individuals with serum liver functions out of normal range were mostly male, living in large urban area, median age of 38.89, with normal marriage, highly educated drinking less than once a week with less than 2 bottles per round, and with prior treatment in either western or Oriental medicine. Summarizing above results, we can carefully deduce that taking herbal medicine (both decoction and pills) or western medicine doesn't cause much affect in the liver functions. But taking two forms of medication simultaneously or altering dosage affect significant increase in the T-bilirubin level, thus one needs to take precaution when taking both. Further research is needed in this field to verify this evidence.
교체된 남해대교 행어케이블에 대한 실내실험 및 케이블 교체 후 장력측정
이정석 ( Lee Jung-seok ),김규선 ( Kim Gyu-seon ) 한국구조물진단유지관리공학회 2004 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.8 No.1
2001 년 실시한 남해대교 정밀안전진단의 결과로써 제시된 보수보강방안에 따라 현재 보수보강공사를 실시하고 있다. 본 논문에서는 보수보강방안중 행어케이블 부분교체와 관련하여. 교체작업 완료 후 대상교량의 전체 행어케이블 장력을 측정한 후 정밀안전진단시 측정된 장력과 비교ㆍ분석함으로써 전체 행어케이블의 안전성을 검토결과를 수록하였고, 해체된 행어케이블에 대한 인장강도시험과 단면 조사 결과를 토대로 행어케이블의 품질을 평가함으로써 나머지 행어케이블에 대한 상태 추정과 케이블 유지관리방안을 제시하였다. The repair works on Namhae Suspension Bridge are now performing according to the result of in-depth inspection in 2001. In this paper, relating to those repair works, the results of measuring cable tension force and comparison to former result in 2001 is included. From these results, the safety of hanger cables is evaluated. Quality evaluation of in-use hanger cables based on the test of tension strength and investigation of inside of removed cables is included and suggest the important points in maintenance of hanger cables.
이정석(Lee Jung-Seok),이윤향(Lee Yun-Hyang),이상민(Lee Sang-Min) 한국구조물진단유지관리학회 2006 한국구조물진단학회 학술발표회논문집 Vol.10 No.1
When performing bridge load test, deflection of girders is the most important measuring item. The response correction factor(Ks) is the key parameter in order to calculate the official load carrying capacity and is calculated from the deflection ratio of analytical model to real bridge and the factor. The common method for measuring deflection of bridge is using displacement transducers and temporary support for the sensors. But, in case of the bridges on the river or the sea, high-rise bridges, it is very difficult to measure in usual way. Using tiltmeter is good alternative for the case. In this paper, the method of using tiltmeter and analysing tilt data is introduced.