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김동수(Dong Soo Kim),김경림(Kyung Rim Kim),윤혁진(Hyuk Jin Yoon),이홍기(Hong Ki Lee),류종철(Jong Cheol Ryu),김두일(Doo Il Kim),양태현(Tae Hyun Yang) 대한내과학회 1999 대한내과학회지 Vol.57 No.3
Pheochromocytoma was usually derived from adrenal medulla or chromaffin cells in or about sympathetic ganglia, and manifested several symptoms and signs by producing, storing, secreting catecholamine. This tumor frequently presented various symptoms such as paroxysmal or persistent hypertension, headache, sweating, palpitation. EKG abnormalities, myocarditis, cardiomyopathy, angina pectoris and myocardial infarction have been reported in cardiovascular systems. We experienced two cases of pheochromocytoma associated with myocardial infarction Two patients presented typical cardiac enzyme patterns and regional wall motion abnormalities on ehcocardiography which was compatible with acute myocardial infarction. However, these patients showed normal coronary artery on coronary angiograpy. Urinary excretion of catecholamine metabolites were elevated and pheochromocytoma was found on right adrenal gland. After the removal of pheochromocytoma, urinary excretion of catecholamine metabolities, regional wall motion abnormalities on echocardiography and blood pressure were normalized. (Korean J Med 57:357-363, 1999)
Pt 및 Pt-Pd 촉매에 있어서 일산화탄소 산화반응에 관한 연구
김경림,조영일,김우식,유홍진 연세대학교 대학원 1982 延世論叢 Vol.19 No.1
This study is concerned with the oxidation of carbon monoxide on Platinum and Platinum -Palladium catalysts. Catalysts were made by the impregnation method and flow reactor was used in the catalytic reaction. As for the mixed gases, carbon monoxide concentration varied from 1 to 4% and that of oxygen from 1 to 4%. Na was used as carrier gas and GHSV varied from 24,000h-1 to 60, 000h-1. The temperature range was from 200 to 600℃. It was also taken into consideration that the heat and mass transfer resistance of cur catalysts was negligible in the study. Experimental results showed that Platinum-Palladium catalyst was about 1.5∼3.90 superior to Platinum catalyst in conversion yield. When we used Platinum-Palladium catalyst, we observed that carbon monoxide oxidation was found to be 1st order with respect to carbon monoxide concentration. Activation energy of Pt-Pd catalyst was 23.5kcal/mol.