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산전 유전 검사로 진단된 3회 연속적인 모계 기원의 가족성 partial trisomy 4p와 4/22 전좌 이상(translocation) 예
양영호,김경수,김세광,김인규,민혜원,송찬호,Yang, Y.H.,Kim, G.S.,Kim, S.K.,Kim, I.K.,Min, H.W.,Song, C.H. 대한생식의학회 1994 Clinical and Experimental Reproductive Medicine Vol.21 No.1
A 27-year-old pregnant woman who had one son with mental and growh retardation and dysmorphic features, was referred for genetic counselling. Cytogenetic investigations revealed 4/22 translocation in the mother(46, XX, t(4;22)(p14;P11)), partial trisomy 4p in son(46, XY, -22, +der(22), t(4;22)(p14;p11)mat). The father had normal karyotype. Amniocentesis and chorionic villi sampling were performed in 3 successive pregnancies. The karyotypes of fetus in 3rd, 4th pregnancies by amniocentesis were 46, XX, t(4;22)(p14;p11) and 46, XX, t(4;22) (p14;p11), and the karyotype of fetus in 5th pregnancy by chorionic villi sampling was found to be 46, XX, -22, +der(22) t(4;22)(p14;p11)mat. We report 3 succesive prenatally diagnosed familial partial trisomy 4p and 4/22 translocation of maternal origin with review of literature.
김인규,유한균,이의길,최양진,김하영 한밭대학교 산업과학기술연구소 1995 논문집 Vol.3 No.-
A piano plate is provided, preferably on the top surface thereof, with a fine rugged pattern comprised of a number of shallow recesses of various shapes and dimensions for betterment of its resonance characteristics responding to vibrations of a wide variety of frequencies, particularly to vibrations in the treble range, and, when required, for enrichment of aesthetic effect. The vacuum process is advantageously used for manufacturing thereof thanks to its smooth flow of molten metal at casting and easy removal of the cast product from the associated mold. The mechanical properties and damping capacity of cast product by vacuum process were investigated. The decrease in the damping capacity was attributable to the characteristic property of graphite and distortion for the cast product was improved by pouring temperature and romoval time.