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이명기,김창구,김동희,천봉권,박두복,김대조 대한신경외과학회 1991 Journal of Korean neurosurgical society Vol.20 No.7
A case of primary malignant lymphoma of the brain is described in which lesions seen on computed tomography scans disappeared and clinical remissions occurred by administration of corticosteroid. In our patient, at least three remissions occurred over a span of about 44 months. The diagnosis was delayed because of easy disappearance and confusion with other conditions. A stereotactic biopsy was performed and diagnosed as Non-Hodgkin's lymphoma, diffuse, large noncleaved cell type, B cell origin by H & E and immunologic marker analysis. We present our case with review of the literatures.
전류운송기를 이용한 비접지 L과 FDNR 의 새로운 실현 회로
박종연,이명기 江原大學校 産業技術硏究所 1993 産業技術硏究 Vol.13 No.-
Using two current conveyors with the grounded capacitors and resistors, this paper proposed equivalent circuits which can realize the floating L and the floating FDNR. To find out their characteristics, we experiment with these circuits instead of the floating L of the low-pass filter and the floating FDNR of the high-pass filter respectively. Comparing theoretical values with experimental ones, values of the proposed floating L represent the error of 5 percents in the frequency range from 5 KHz to 25 KHz, and values of the floating FDNR represent the error of 5 percents in the range from 8 KHz to 25 KHz. So the proposed floating L and the FDNR circuits are expected to be implemented with current conveyors of an IC.