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박용욱,김형중,서중석 大韓法醫學會 1999 대한법의학회지 Vol.23 No.1
Wilms' tumor is the most common urinary tract neoplasm and one of the most frequent solid abdominal malignant tumors of childhood, usually diagnosed between the ages of 2 and 5 years. Typically, it is manifested as an asymptomatic unilateral or upper abdominal mass. Abdimonal pain after some traumatic incident, fever, anemia, hematuria and hypertension are other patterns of presentation. In a considerable number of these patients, pulmonary metastases are present at the time of primary diagnosis. But, the initial presentation of acute pulmonary tumor emboli without surgical manipulation is very rare. We describe a sudden unexpected infantile death case diagnosed as pulmonary tumor embolism preexisting Wilms' tumor. To our knowledge, this is the initial autopsy presentation of Wilms' tumor with tumor embolism as sudden and unexpected death in Korea.
개구리(Rana nigromaculata)胃 粘液質의 組織化學的 硏究
趙顯旭,朴重錫,河在淸 慶尙大學校 1985 論文集 Vol.24 No.2
개구리 위 점막내에 존재하는 점액질의 성분을 변태 시기에 따라서 조직화학적으로 관찰하였다. 원주세포 내 점액질은 변태 XVI와 XXIV 시기에는 바황화점액질로 된 산성점액질에 비해서 중성점액질이 주를 이루었고 변태 XX 시기에서는 산성 및 중성점액질이 혼재하였다. 점액선 세포내 점액질은 관찰된 변태 세 시기에서는 주로 중성점액질로 되어 있었다 This study was-performed histochemically to observe the responses of mucus secreting cells in the gastric mucosa of frog, Rana nigromaculata during metamorphosis. The obtained results were as follows: 1. Columnar cells contained a small amount of acidic mucosubstances including nonsulfated. mucin and a large amount of neutral mucosubstances at XVI and XXIV stages of metamorphosis. At XX stage, columnar cells contained acidic and neutral mucosubstances. 2. Mucous glands contained mainly neutral mucosubstances at XVI, XX and XXIV stages.
홍경욱,이정아,김원진,박철민,권혜리,박혜원,엄중식 대한감염학회 2007 감염과 화학요법 Vol.39 No.5
국내의 토착형 말라리아는 삼일열 말라리아로, 1993년부터 재유행이 시작되었다. 말라리아의 중요한 합병증으로 드물지만 비장 파열이 있는데, 이는 주로 삼일열 말라리아에 의해서 발생되며, 국내에서는 1999년 말라리아에 의한 비장 파열로 비장 절제술을 시행한 예가 보고된 바 있다. 현재까지는 비장 파열이 있을 때 비장 절제술이 일차적인 치료로 되어 있으나, 비장 절제술 후의 감염 위험성이 크므로, 활력 징후가 불안정하거나, 출혈이 지속되는 소견이 보이지 않으면 가급적 보존적 치료를 하는 것이 추천된다. 저자들은 비장 파열이 동반된 말라리아 환자에서 비장 절제술을 시행하지 않고 보존적 치료로 호전된 예를 경험하여 보고하는 바이다. Plasmodium vivax has been the predominant Plasmodium species in the Republic of Korea and reemerged in 1993. Spontaneous rupture of malarial spleen is a rare but important complication associated with P. vivax infection. Only one case of spontaneous rupture of malarial spleen was reported in Korea in 1999. Splenectomy is still accepted as the treatment of choice in cases of spontaneous rupture of the spleen. But, considering increased risk of postsplenectomy infecion, splenectomy should be reserved for those patients with severe rupture or those with continued or recurrent bleeding. And conservative treatment should be considered in selected, closely monitored patients. We report a patient with P. vivax malaria who developed a spontaneous splenic rupture and was improved by conservative treatment.
부분적으로 일정한 자기장의 영향을 받는 보의 동적해석에 관한 연구
홍성욱,박중윤 金烏工科大學校 1992 論文集 Vol.13 No.-
This paper presents the dynamic analysis of a beam subjected to a piecewise uniform magnetic field. The objective of this study is to test the applicability of a passive magnetic damper in the suppression of structural vibration. The fundamental idea of the passive magnetic damper is that a moving conductor experiences viscous damping force when subjected to a magnetic field, due to internal current loss induced by electromotive force. The dynamic equation of the system is formulated by using the Green function method and finite element modeling technique. Simulation of the system is also performed to discuss the pros and cons of the passive magnetic damper in the suppression of a beam vibration.
홍성욱,박중윤,김현수,박재현,박창용 金烏工科大學校 産業技術開發硏究院 1999 産業技術開發硏究 Vol.15 No.-
The present paper investigates the chatter stability of a milling spindle-workpiece system in face milling process. To this end, a new method using frequendy response function is adopted for predicting the chatter vibration. A compliant workpiece is used to make the spindle-workpiece system easily exposed to chatter vibration. The entire experimental procedure, including measurement of frequency response function and cutting coefficients, is demonstrated. The experimental result shows that the chatter stability prediction method using frequendy response function is of great use in face milling process.
채터 주파수-회전 속도 선도를 이용한 채터 발생 진단에 관한 연구
이상호,박중윤,홍성욱 금오공과대학교 산업기술개발연구원 2000 産業技術開發硏究 Vol.16 No.-
This paper presents a method to identify the on-set of chatter by using the chatter frequency-spindle speed diagram for a milling spindle-workpiece system in face milling process. To this purpose, a new method using frequency response function is adopted for predicting both the chatter condition and chatter frequency. A chatter frequency-spindle speed diagram for various conditions is proposed and studied to diagnose the chatter. The experimental results show that the chatter frequency-spindle speed diagram is useful for diagnosis of the on-set of chatter vibration.
강병식,박중윤,홍성욱 金烏工科大學校 2000 論文集 Vol.21 No.-
This paper presents an exact dynamic element for composite Timoshenko beam, which is inherently subjected both to bending and torsional vibration. The coupling effect between bending and torsional vibrations is considered in the derivation of the exact dynamic element. Three examples are provided to validate and illustrate the proposed exact dynamic element matrix for composite Timoshenko beam.