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DRAM 메모리 모듈 제작에서 MCM-L 구조에 의한 설계
지용,박태병,Jee, Yong,Park, Tae-Byung 대한전자공학회 1995 전자공학회논문지-A Vol.32 No.5
In this paper, we studyed the variables in the design of multichip memory modules with 4M$\times$1bit DRAM chips to construct high capacity and high speed memory modules. The configuration of the module was 8 bit, 16 bit, and 32 bit DRAM modules with employing 0.6 W, 70 nsec 4M$\times$1 bit DRAM chips. We optimized routing area and wiring density by performing the routing experiment with the variables of the chip allocation, module I/O terminal, the number of wiring, and the number of mounting side of the chips. The multichip module was designed to be able to accept MCM-L techiques and low cost PCB materials. The module routing experiment showed that it was an efficient way to align chip I/O terminals and module I/O terminals in parallel when mounting bare chips, and in perpendicular when mounting packaged chips, to set module I/O terminals in two sides, to use double sided substrates, and to allocate chips in a row. The efficient number of wiring layer was 4 layers when designing single sided bare chip mounting modules and 6 layers when constructing double sided bare chip mounting modules whereas the number of wiring layer was 3 layers when using single sided packaged chip mounting substrates and 5 layers when constructing double sided packaged chip mounting substrates. The most efficient configuration was to mount bare chips on doubled substrates and also to increase the number of mounting chips. The fabrication of memory multichip module showed that the modules with bare chips can be reduced to a half in volume and one third in weight comparing to the module with packaged chips. The signal propagation delay time on module substrate was reduced to 0.5-1 nsec.
상행대동맥류로 수술받은 Marfan 증후군 환자에서 발생한 박리성 하행대동맥류 1예
박태병,김응진,문태훈,조철호,고광곤,조상균,김삼수,김문환,진성훈,박찬섭,서창해 대한내과학회 1993 대한내과학회지 Vol.44 No.2
Marfan증후군 환자에서의 심혈관계 병변은 주로 상행동맥의 확장과 이에 동반된 합병증(대동맥박리, 대동맥판 폐쇄부전증)을 나타나는 경우가 많으며 이들 병변이 문제를 일으킬 정도가 되면 수술적 치료를 하는 경향이다. 그러나 Marfan증후군 환자에서의 혈관병변은 대동맥 중막의 약화로 인해 대동맥의 다른 부위에서도 쉽게 일어날 수가 있으며 주의깊은 관찰과 대비가 필요하다. 저자들은 Marfan증후군 환자에서 대동맥판 폐쇄부전증이 동반된 상행대동맥류로 modified Bentall수술을 시행받고 추적 관리중 하행대동맥에 박리성대동맥류가 발생하여 내과적으로 치료한 증례를 경험하였기에 보고하는 바이다. Most of the patients with Marfan's syndrome are affected by cardiovascular complications which is responsible for the patient's reduced life expectancy. So, to prevent catastrophic event, surgical correction of dilated aorta, dissecting aortic aneurysm or incompetent valve is often indicated. The cardiovascular complication can occur on any large vascular system and multiple lesions and recurrences are not rare. Case: 36-years-old female with Marfan's syndrome was admitted due to suddenly developed back pain. She was performed modified Bentall's operation 4 years earlier due to ascending aortic aneurysm and aortic regurgitation as complications of Marfan's syndrome. The aortography and abdominal ultrasonography revealed dissecting aneurysm at descending thoracic and abdominal aorta without compromised major branches. The patient was managed conservatively and was able to discharge without any serious problems.
박태병,송영구,김상돈,정성택,황성철,이이형,박경주,전희선 아주대학교 의과학연구소 1996 아주의학 Vol.1 No.1
Nocardia species are Gram positive, partially acid fast, branching actinomycetes which infreguently cause illness in man. But in an immune-supressed host, it can cause opportunistic pulmonary infection first and later dissemination. There are nine species of Nocardia. Common pathogens are N. asteroides and N. brasiliensis which account for 85∼95 % of all nocardiosis. Infections by other Nocardia species are rarely reported and N. caviae accounts for only 0.5∼3% of all nocardiosis. Here we present a case of pulmonary infection with Nocardia caviae in a patient on chronic steroid therapy. The patient was a 69-year-old male with pulmonary tuberculosis 10 years ago. He habitually had taken over-the-counter steroids due to degenerative arthritis of knees. This time, he visited the hospital with fever, cough, sputum, general weakness and dyspnea of about 20-days duration. He was Cushingoid in appearance, and chest auscultation revealed crackles on both lungs. Radiologic examination showed multiple nodular opacities on the right lung. But, non-invasive studies were inconclusive. Percutaneous needle aspiration was performed for the lung lesion and Nocardia species were found on Gram stain and modified acid fast slain. Culture and biochemical study of aspirated materials concluded that N. caviae was the causative organism. Treatment was successful with ampicillin-sulbactam and trimethoprim-sulfame-thoxazole.
박찬섭,신용운,김경래,정원재,오성태,박태병,귄계숙,안병엽,주영채 대한소화기내시경학회 1992 Clinical Endoscopy Vol.12 No.1
Multiple gastric caner, now considered to be a sort of multiple primary cancer by Moertel's classification, is a special type of cancer in which two or more tumor lesions arise independently from the stomach. Although its incidence is rare and it has never been reported in Korea yet, the report of multiple gastric cancer is increasing with lengthened life survival and improved diagnostic method. We recently experienced two cases of triple gastric cancer, the one in 53-years-old male who had well differentiated adenocarcinoma(EGC IIb+c) on antrum, poorly differentiated adenocarcinoma on cardia and moderately differentiated adenocarcinoma on mid-body, and the other in 65-years-old female who had two poorly differentiated adenocarcinoma on cardia and anterior wall of low body and moderately differentiated adenocarcinoma (EGCIIc) on posterior wall of low body. Triple gastric cancer is rare, so we reported 2 cases of triple gastric cancer.
권계숙,박태병,조철호,고광곤,조상균,김삼수,박찬섭,서창해 대한내과학회 1993 대한내과학회지 Vol.44 No.5
저자등은 대동맥판 상부 협착증을 가진 남매의 증례를 통해 가족성 대동맥판 상부 협착증을 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Supravalvular aortic stenosis is a dongenital narrowing of the ascending aorta. The stenotic lesion may be localized or diffuse, originating at the superior margin of the sinuses of Valsalva just above the level of the coronary arteries. This disease is suggested to have familial tendency heredited by an autosomal dominant type of transmission. A 17-years-old male with intermittent exertional chest pain, whose elder sister being a patient with supravalvular aortic stenosis, was admitted for cardiologic evaluation. Diagnosis of supravalvualr aortic stenosis was made by echocardiography, angiocardiography and magnetic resonance imaging of heart. We reported a case of familial supravalvualr aortic stenosis with a review of literature.
이기형,신용운,조철호,오성태,박태병,김준미 대한소화기내시경학회 1992 Clinical Endoscopy Vol.12 No.2
The incidence of gastric cancer is high in old age group and low in young age group, extremely rare in child age. So the diagnosis of gastric cancer in young age is often delayed, and this, with other factors such as poorly differentiated histopathologic tendency and rapid growing nature, makes the prognosis poorer than in other age guoup. Therefore it should always be remembered that the young who has gastric symptom may have malignancy in his stomach in spite of the age. We report a case of early gastric cancer in a 16-years old male with the review of the literature.