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조종덕 대한마취과학회 1973 Korean Journal of Anesthesiology Vol.6 No.1
A case of sudden respiratory distress due to pneumothorax which cccurred during simple total hysterectomy under endotracheal nitrous oxide-oxygen-succinylcloline I. V. drip anesthesia has been presented. The pneumothorax was evidenced by chest X-ray, and was believed due to distension and rupture of alveoli asscciated with positive pressure ventilation. Immediate insertion of an intercostal water-seal drainage and administration of oxgen resulted in uneventful recovery. Literatures have been reviewed, and the importance of pressure-time relationship of ventilaton in potential hazards of pneumothorax stressed.
전신마취 직후 발생한 Malignant Hyperthermia
김익수,조종덕 대한마취과학회 1973 Korean Journal of Anesthesiology Vol.6 No.1
A case of malignant hyperthermia manifested by precipitous rise in body temperature, metabolic acidosis and mucalar rigidity in a 48 year old farmer with bronchogenic carcinoma after thoracotomy under nitrous oxide-oxygen-halothane-succinylcholine anesthesia has been presented. Daspite all strenuous supportive measures, the patient expired 11½ hours following the surgery. The importance of early recognition and vigorous treatment has been stressed.
다결정 Pt/LiOH 수성 전해질 계면에서 수소 흡착부위의 전기화학적 특성
천장호,조종덕,Chun Jang Ho,Cho Chong Dug 한국전기화학회 1999 한국전기화학회지 Vol.2 No.4
다결정 Pt/0.2 M LiOH수성 전해질 계면에서 두 구별되는 수소 흡착부위의 전기화학적 특성을 위상이동 방법을 이용하여 연구하였다. 순방향과 역방향 주사시, 순환 전압전류도에 UPD H 봉우리가 나타난다. 위상이동 변화 또는 Langmuir 흡착등온식에 전이영역(-0.66 to -0.96 V vs. SCE)이 나타난다 전이영역(-0.66 to -0.96 V vs. SCE)에서 수소 흡착평형상수(K)는 18.5에서 $4.0\times10^{-5}$ 또는 $4.0\times10^{-5}$에서 18.5로 전이한다 마찬가지로, 수소 흡착표준자유에너지$({\Delta}G_{ads})$도 -7.2 kJ/mol에서 25.1kJ/mol또는 25.1 kJ/mol에서 -7.2 kJ/mol로 전이한다. 다결정 Pt표면에서 UPD H와 OPD H는 구별이 가능한 두 종류의 전착된 수소 같이 작용한다. 발열반응이 UPD H 영역에서 나타난다. UPD H 봉우리와 전이영역은 다결정 Pt 표면에서 UPD H와 OPD 보의 두 구별되는 흡착부위에 기인한다. The electrochemical characteristics of two distinct adsorption sites of H at the polycrystalline Pt/0.2 M LiOH aqueous electrolyte interface have been studied using the phase-shift method. At the forward and backward scans, the under-potentially deposited H (WD H) peak occurs on the cyclic voltammogram. The transition region on the phase-shift profile or the Langmuir adsorption isotherm occurs at ca. -0.66 to -0.96 V vs. SCE. At the transition region (ca. -0.66 to -0.96 V vs. SCE), the equilibrium constant (K) for H adsorption transits from 18.5 to $4.0\times10^{-5}$ and vice versa. Similarly, the standard free energy $({\Delta}G_{ads})$ of H adsorption transits from -7.2 to 25.1kJ/mol and vice versa. The under and over-potentially deposited H (UPD H and OPD H) on the poly-Pt surface act as two distinguishable electroadsorbed H species. An exothermic reaction occurs at the UPD H range. Both the UPD H peak and the transition region are attributed to the two distinct adsorption sites of the UPD H and OPD H on the poly-Pt surface.