Woo Sung Park

How to Do in Persistent Diarrhea of Children?: Concepts and Treatments of Chronic Diarrhea

Chronic diarrhea is defined as passing watery stools that lasts for more than 2 weeks. Persistent diarrhea belongs to chronic diarrhea and is a chronic episode of diarrhea of infectious etiology. The etiology of chronic diarrhea is varied. It is important to consider the childs age and clinical manifestations with alarm signals for an application of proper treatments to children with chronic diarrhea. Vicious cycle is present in chronic diarrhea and nutritional rehabilitation can break the vicious cycle of chronic diarrhea and is one of the main one thing among treatments. We should know the exact concept of chronic diarrhea and provide appropriate treatments according to etiologies of chronic diarrhea.

A Study on the Insulation Performance of Composite Multilayer Insulation by Applciation of Heat Storage Tank

MLI(Multi-layer Insulation) is widely used to get highly insulating on cryogenic system in order to reduce heat loads. MLI for satellites thermal performance is changed by materials and laminated method. In this study, a composite multilayer insulation by application of heat stroage tank performance were compared with materials and laminated to change the way. Experimental methods of the KS C 9805 was used, the composite multilayer insulation and EPS was compared with the insulation performance. A method for analysis of experimental results is the equivalent thickness about CMI and the insulation performance were used to compare thermal conductance. As a results, the equivalnet thickenss and the thermal conductance of the composite multilayer insulation were smaller than the EPS and the thermal performance are more excellent. In addition, the configuration of 에너지공학 제 권 제 호 , 23 3 (2014) Journal of Energy Engineering, Vol. 23, No. 3, pp. 82~87 (2014) http://dx.doi.org/10.5855/ENERGY.2014.23.3.082 To whom corresponding should be addressed. Dept. of Mechanical Engineering, Kookmin University Tel : 02-910-4674 E-mail : tychung@kookmin.ac.kr 축열조용 복합 다층 단열재의 단열 성능 연구 Journal of Energy Engineering, Vol. 23, No. 3 (2014) 83 the composite multilayer insulation materials and laminated method varies depending on the overall heat transfer coefficient was confirmed.