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최치훈(Chi-hoon Choi),최원영(Won-young Choi),김남혁(Nam-hyuk Kim),임태원(Tae-won Lim) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
A recycled material from plastic rocker cover have been prepared to produce automotive components. The effect of the number of recycle on mechanical properties of recyclate was examined. Morpholoy, rheological and thermal properties were also investigated using scanning electron microscope (SEND, rheomeuics mechanical spectometer (RMS) and differential scanning calorimeter (DSC). With increasing the number of recycle, tensile strength, flextural modulus, impact strength, and heat distortion temperature UIDT) decreased probably due to the breakage of glass fiber as well as thermal degradation of nylon matrix.
양수과소증을 동반하지 않은 임신 제2분기 초기에 진단된 인어체기형의
박현주 ( Hyun Ju Park ),안현숙 ( Hyun Sook An ),김조은 ( Jo Eun Kim ),이승아 ( Seung A Lee ),최경아 ( Kyoung A Choi ),정순지 ( Sun Ji Jeong ),최원영 ( Won Young Chi ) 대한주산의학회 2006 Perinatology Vol.17 No.1
Sirenomelia is rare congenital malformation characterized by fusion of the lower extrimities associated anomalies included absence of urogenital system (bilateral renal agenesis, absent ureter, urinary bladder, absent internal and external genitalia), induced severe oligohydramnios, anorectal atresia, single umbilical artery, pulmonary hypoplasia. The incidence is 1:60000 births. Survival is extremely are, and only possible, in the absence of bilateral renal agenesis. In view of the dismal prognosis, early diagnosis allows for earlier and less traumatic therapeutic abortion. We report a case of sirenomelia without oligohydramnios diagnosed in early second trimester.