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박형 휴대폰 케이스용 고분자 재료 및 사출 조건에 관한 연구
김신우(S. -W. Kim),허윤(Y. Heo),하영욱(Y. -W. HA),박원규(W. -K. Park) 한국생산제조학회 2007 한국생산제조시스템학회 학술발표대회 논문집 Vol.2007 No.5
This paper presents about effects that molding operational conditions affect to injection molded parts. We studied in the two aspects of the resins and mold condition for the case of slim cell phone. First of all, we choose the optimized resins through a comparative study of each resin in the condition of the regular mold processing and design. PC (Polycarbonate) is better at parts applied fatigue load and PPA (Polyphthalamide) is better at parts required strength. Mold temperature is better at over 100℃ to the strength and surface quality.
박형 휴대폰 케이스용 고분자 재료 및 사출 조건에 관한 연구
김신우(S. -W. Kim),허윤(Y. Heo),하영욱(Y. -W. HA),박원규(W. -K. Park) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
This paper presents about effects that molding operational conditions affect to injection molded parts. We studied in the two aspects of the resins and mold condition for the case of slim cell phone. First of all, we choose the optimized resins through a comparative study of each resin in the condition of the regular mold processing and design. PC (Polycarbonate) is better at parts applied fatigue load and PPA (Polyphthalamide) is better at parts required strength. Mold temperature is better at over 100℃ to the strength and surface quality.
내인성 내안구염의 가장 흔한 원인 균주로서의 Klebsiella pneumoniae
박가영 ( Ga Young Park ),김신우 ( Shin Woo Kim ),김혜인 ( Hye In Kim ),권유진 ( Eu Gene Kwon ),김효훈 ( Hyo Hoon Kim ),정주영 ( Ju Young Jeong ),장현하 ( Hyun Ha Chang ),이종명 ( Jong Myung Lee ),김능수 ( Nung Soo Kim ),이신원 ( S 대한내과학회 2012 대한내과학회지 Vol.82 No.2
Background/Aims: Endogenous endophthalmitis (EE) is rare. However, the visual outcome of patients with EE is very poor. Many cases of EE caused by Gram-negative bacterial infections have recently been reported. This study was conducted to explore the most frequent pathogens, diagnosis, and treatment outcomes of EE. Methods: A retrospective analysis was carried out in 23 patients diagnosed with EE through clinical manifestations and ophthalmic examinations in three hospitals between January 2000 and April 2011. Samples from 23 patients with EE were analyzed microbiologically. Results: Pathogens were identified in 18 (78%) of the 23 blood, liver aspirate, and/or vitreous humor samples. Klebsiella pneumoniae was the most frequent organism (13/23, 57%). Abdomino-pelvic imaging (21/23, 91%) was performed to evaluate the primary site of infection. The most common primary infection was liver abscess (14/23, 61%). Despite administration of intravenous antibiotics and intravitreal injection, only six of 23 patients showed improvements in visual acuity. Thirteen (57%) experienced worse visual acuity. Four (17%) were eventually enucleated. Conclusions: In patients diagnosed with EE, abdomino-pelvic CT is required to exclude the presence of liver abscess. If a liver abscess is identified, percutaneous drainage should be considered. Considering the rapid progression and poor prognosis of EE, early diagnosis and immediate management are vital. We currently suggest that empiric antibiotics for treatment of EE should have activity against Gram-negative bacilli such as K. pneumoniae. (Korean J Med 2012;82:200-207)