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Kawasaki 병의 임상적 관찰과 치료방법에 따른 예후의 비교
박철우,윤향석,오광수 圓光大學校 醫科學硏究所 1989 圓光醫科學 Vol.5 No.1-2
The twenty one children with kawasaki disease who were diagnosed and treated through admission at Wonkwang University Hospital for recent 3 years were investigated for clinical patterns and laboratory correlations. We devided the patients into two-groups in the methods of medical drug usuage : Group A ; aspirin only, Group B ; aspirin plus intravenous gamma globulin. The results were as follows ; (1) The average duration of fever was 10 to 11 days. (2) The principal signs during admission were fever, changes of lips and oral mucosa (95%, respectively), changes of peripheral extremities, polymorphous exanthema (81 %, respectively), bilateral conjunctival congestion (67 %), cervical lymphadeno-pathy (62 %) in descending order. (3) The main laboratory findings were positive-CRP (89%), elevated ESR (81%), leukocytosis (72%), increased ALT and pyuria (71%, respectively), proteinuria (43 %) in descending order. The average period of peak elevation of platelets was 10 to 14 days beyond the onset of fever (4) We observed the coronary abnormalities at 6 patients (34 %) Saccular aneurysm of left main coronary artery was developed in one patient who was medicated with aspirin only. But, in five patients (28 %) of double treatment with aspirin and intravenous gamma globulin, we observed a diffuse dilatation of the largest single or both coronary arteries. Those abnormal findings became normalized in periods of 3 to 6 months after the onset of fever.
국어 서사문 담화에서의 중심 전이 과정과 응집성에 관한 고찰
박철우 서울대학교 어학연구소 2002 語學硏究 Vol.38 No.3
This paper aims at finding out constraints on the center transition process in Korean narrative discourse to keep it the most coherent. For that purpose, I will analyze a Korean traditional story titled as 'I-Sang-Han I-Pha-Ri (Magic Leaf)' on the basis of Centering Theory which is originated from Grosz, Joshi & Weinstein (1995). In this approach, the interclausal anaphora resolution depends on those constraints. Firstly, I will introduce the algorithm of the Centering Theory with reference to Korean expressions. Secondly, I will present some working assumptions for the analysis of Korean utterances, which include the issues of recovering empty pronouns, dividing utterances, recognizing entities and arranging discourse segments. And then, I will discuss the analyzed results of the story to find out the constraints at issue including the forward- looking center ranking of Korean. Meanwhile, the global design of the story will be also considered.
Freeze-Thaw Resistance of Concrete using Acid-Leached Rice Husk Ash
박철우,Andres Salas,정철우,이창준 대한토목학회 2014 KSCE JOURNAL OF CIVIL ENGINEERING Vol.18 No.4
The main purpose of this research is to investigate the freeze-thaw resistance of concrete incorporating acid-leached rice husk ash. The research has been initiated because of its unique microstructural characteristic: rice husk ash maintains the original cellularstructure of rice husk that has large amount of empty space, so it has a potential possibility of reducing the air void spacing factor. Thefreeze-thaw resistance of concrete using rice husk ash is compared to that using silica fume. The result shows that the freeze-thawresistance of concrete using acid-leached rice husk ash is slightly less than that of silica fume concrete during 300 freeze-thaw cycles. When freeze-thaw cycles are extended to 600 cycles, freeze-thaw resistance of concrete using acid-leached rice husk ash isequivalent to the concrete using silica fume.