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1차원 및 2차원 대지비저항 측정에 의한 접지설계 비교
한성구(Seong-Gu Han),조대훈(Daehoon Cho),정철희(chulhee Jung),류청희(cheonghee Lyu) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
대지비저항의 측정 분석에 주로 사용되는 4-점 Wenner 전극법이며 1차원 측정법을 이용한다. 1차원 측정방법은 방법이 간편하며 경제적이지만, 측정방법이 기본적으로 특정한 대지구조를 갖는다고 가정하고 분석하므로 실제의 대지구조와 측정하여 분석한 대지구조 모델이 차이를 갖게 되고, 이로인해 접지설계와 실제시공 결과 사이에 오차가 발생하게 된다. 본 연구에서는 1차원 및 2차원 측정법을 이용하여 분석된 대지구조모델를 이용하여 접지시스템 설계를 수행하였고, 이 결과를 실제현장에 시공하여 각각의 특성을 비교 분석하였다.
급성 폐동맥색전증과 성인성호흡곤란증후군에서 산소운반과 산소섭취의 상관관계
이상도 ( Lee Sang Do ),한성구 ( Han Seong Gu ),심영수 ( Sim Yeong Su ),김건열 ( Kim Geon Yeol ),한용철 ( Han Yong Cheol ) 대한내과학회 1993 대한내과학회지 Vol.44 No.4
Background: In adult repiratory distress syndrome(ARDS) the pathologi supply dependence of oxygen consumption, whoch provide the basis for `best PEEP`, is suggested, but which is still in controversy. And in acute pulmonary embolism little is known about the relationship betwen oxygen transport and oxygen consumption. Methods: To evaluate the relationship betwen oxygen transport and oxygen consumption in ARDS and acute pulmonary embolism, experimental ARDS was induced in 7 mongrel doges with oleic acid and acute pulmonary emblism in 7 dogs with autologous blood clot. Then hemodynamic and gas exchange parameters were measured with serial increment of PEEP. Results: In ARDS group, blow the oxygen transport of 28 ml/min/kg, the change of oxygen consumption was linearly related to the change of oxygen transport(r=0.55, p<0.05). Oxygen extraction ratio didn`t correlate with oxygen transport. In acute pulmonary embolism group, below the oxygen transpot of 29ml/min/kg, change of oxygen consumption was linearly relatred to change of oxygen transport(r=0.57, p<0.05). Oxygen extraction ratio didn`t correlate with oxygen transport. In ARDS group there was a significant correlation between the change of oxygen tension (r=0.79, p<0.05). In acute pulmonary embolism group there was a significant correlation between the change of oxygen transport and change of mixed venous oxygen tension (r=0.83, p<0.05). Conclusion: These data suggest that a linear relationship between oxygen consumption and oxygen transport is not unique to ARDS. Mixed venous oxygen tension seems to be sensitive predictor of oxygen transport in both ARDS and acute pulmonary embolism.
반대쪽 팔 들기 동작 시 만성요통환자와 정상인의 다열근 두께 변화 비교
송원빈,김지혁,정웅근,하예지,한성구,황보인,Song, Won-bin,Kim, Chi-hyok,Jung, Woong-keun,Ha, Ye-ji,Han, Seong-gu,Hwangbo, In 대한정형도수물리치료학회 2018 대한정형도수물리치료학회지 Vol.24 No.2
Backdround: Using RUSI (Rehabilitation Ultra Sound Imiging) method, which showed high reliability in soft tissue measurements, we compared the muscle relax and contraction, sex, and physical characteristics of the activity of the multifidus muscle in patients with chronic low back pain and normal subjects. Methods: In this study, 16 patients (male: 8, female: 8) with chronic low back pain and 16 healthy adult (male: 8, female: 8) were participated. Subjects lied prone posture on the table with elbow flexed $90^{\circ}$ and shoulder abducted $120^{\circ}$ (starting position). Test was applied two types that muscle relax position and muscle contraction position. Muscle relax position is equal to starting position and muscle contraction position is that upper extremity lift up about 5cm from the table. We measured the thickness of the multifidus muscle in each position by ultrasound. Results: There was a statistically significant difference between the two groups in deviation of Both Side Difference of Activated resting-Arm Lifting Ratio according to posture change between the chronic low back pain patient group and the normal group. Conclusion: The result of this study support previous study showing that there is an imbalance in the activity of multifidus in patients with chronic low back pain.
특발성 간질성 폐렴 환자의 기관지 폐포 세척액 내의 Clara Cell Secretory Protein 발현에 대한 연구
엄상원 ( Eom Sang Won ),한선진 ( Han Seon Jin ),최창민 ( Choe Chang Min ),이창훈 ( Lee Chang Hun ),유철규 ( Yu Cheol Gyu ),이춘택 ( Lee Chun Taeg ),한성구 ( Han Seong Gu ),심영수 ( Sim Yeong Su ),김영환 ( Kim Yeong Hwan ) 대한결핵 및 호흡기학회 2002 Tuberculosis and Respiratory Diseases Vol.53 No.2