http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이학성,허순영,김원덕 대한소아청소년과학회 2005 Clinical and Experimental Pediatrics (CEP) Vol.48 No.9
Hemangiomas are the most common benign tumors of infancy. Fifteen to 30% of these patients have multiple hemangiomas. Diffuse neonatal hemangiomatosis (DNH) is a disease that often has a fatal outcome if left untreated, and is characterized by multiple cutaneous and visceral hemangiomas. Corticosteroids are the commonly accepted first line treatment, but if no effect is seen, further treatment is required such as interferon, surgical excision, embolization and radiotherapy. Interferon is effective, but the neurologic sequela including spastic diplegia can be a complication. We experienced a case of DHN in a neonate. In this case, the baby presented with multiple cutaneous and visceral hemangiomas with Kasabach-Merritt syndrome (KMS) that included thrombocytopenia and consumptive coagulophthy. The baby was successfully treated with vincristine after the failure of steroid therapy. Vincristine 투여로 호전된 미만성신생아 혈관종증대구파티마병원 소아과이학성·허순영·김원덕혈관종은 영아에서 가장 흔한 양성 종양으로 이 중 15-30%는 다발성 혈관종을 보인다. 미만성 신생아 혈관종증은 피부와 다수의 내부 장기를 침범하는 질환으로 치료하지 않는 경우 치명적일 수 있기 때문에 신속하고 적극적인 치료가 요구된다. 치료는 부신피질 호르몬이 1차 선택 약제로 사용되며 이에 반응 하지 않으면 인터페론, 절재술, 전색술, 방사선 치료 등을 이용할 수 있다. Interferon alfa-2a는 매우 효과적이나 강직성 양마비(spastic diplegia)와 같은 심각한 합병증이 보고되고 있다. 저자들은 출생 직후 호흡곤란과 전신의 피부 혈관종을 주소로 입원하여 Kasabach-Merritt 증후군을 동반한 미만성 신생아 혈관종증을 진단 받았던 1례에서 스테로이드 치료에 대해 혈소판 감소증 및 소모성 응고장애의 호전은 있었으나 혈관종의 수 및 크기의 호전이 없어 vincristine을 투여하여 치료에 성공하였기에 문헌 고찰과 함께 보고하는 바이다.
이학성 서원대학교 응용과학연구소 2000 응용과학연구 Vol.9 No.1
The purpose of this study was to quantitatively determine the indoor infiltration of pollutants of outdoor origin. The relationship between indoor and outdoor air is dependent, to a large extent, on the rate of air exchange between these two environments. Mean indoor/outdoor ratios measured from this study were: 1.15 for PM??(d??<2.5μm); 1.00 for SO₄??; 0.52 for NO₃??; and 0.67 for NH₄??. INdoor PM? concentration were greater than outdoor levels. However, indoor concentrations of NO₃?? and NH₄?? were less than outdoors. In the case of SO₄??, the indoor and outdoor concentrations were similar. Indoor concentrations of PM??, SO₄?? and NO₃?? were dependent upon the outdoor concentrations. The NO₃?? and NH₄?? deposition velocities calculated were 0.16 and 0.09cm/sec, respectively.
상용차용 샌드위치 복합소재 패널의 구조시험 및 유한요소해석 평가
이학성,원종운,허몽영,윤재영,이주영,강신재 한국기계기술학회 2015 한국기계기술학회지 Vol.17 No.3
Recently, the need of weight reduction has been required in automobile industry. In this paper, we aim to evaluate the composite sandwich panel to substitute original steel structure of commercial vehicle. The compressive and drum-peel tests were conducted to consider core materials and resin system of the sandwich panel. Based on the test, we decided the core reinforcement and matrix materials of the panel. As a result, the composite panel were composed of aluminum profile, glass fiber prepreg and aluminum honeycomb. We also confirmed the weight reduction ratio and structural safety compared to prior steel structure components by bending test and FEM simulation.
이학성,Lee, Hak-Seong 대한전기협회 2006 전기저널 Vol.358 No.-
국내 중전기기 및 신재생 에너지부분 관련업체들의 향후 제품 및 기술개발 방향 설정에 참고로 활용되길 기대하면서 2006년 4월 및 8월 개최되었던 중전기기 및 신재생 에너지관련 대표적인 전시회 참관 보고서들을 요약하여 동 분야 기술 및 시장 동향들을 소개하고자 합니다. 아울러 여러 보고서 내용들을 요약 정리하는 과정에서 집필자의 주관적인 견해나 편견이 다소 작용할 수 있다는 점도 미리 지적해두고자 합니다.
여름철 서울시 미새입자(PM_2.5)에 포함된 원소농도 특성
이학성 서원대학교 응용과학연구소 2003 응용과학연구 Vol.12 No.1
Fine particle(dp<2.5㎛) samples were taken in Seoul using an annular denuder system(ADS) with 25-hr sampling period in the summer of 1997. The data set was collected on thirteen different days from 17 July to 11 September 1997. The samples were analyzed using proton induced x-ray emission(PIXE) for the elements of Na, Mg, Al, Si, S, Cl, K, Ca, Ti, Mn, Fe, Zn, and Pb. The magnitude of mean elemental concentrations measured from this study had the following order : S> Si> Na> K> Ca> Fe> Al. Correlation coefficients among Si, Al, Fe, Ca, and K, which may be emitted from soil and paved road dust, were high. Correlation coefficients among Fe, Cu, and Zn were also high, suggesting that these elements may be emitted by fossil fuel, refuse incineration and automobiles. Concentrations of Pb, Cu, Zn, and Mn in Seoul and Taegu were higher than in Chongju. In the case of S, Cl, and Fe, these concentrations in Taegu were higher than those measured in Seoul and Chongju.