본 연구에서는 신규 기능성 화장품 소재 개발을 위해 어리연꽃으로부터 분리한 sweroside를 이용하여 섬유아세포 내에서의 항노화 효과를 확인하였다. CCD-986sk 세포를 이용하여 sweroside의 항노화 효과를 측정한 결과, UVB에 의해 증가된 ROS의 발현을 억제하였으며, pro-collagen의 발현을 증가시키며 MMP-1의 발현을 억제하는 것으로 확인되었다. 이 결과를 종합해보면, sweroside는 화장품 분야에서 신규 항노화 기능성 소재로서의 활용 가능성이 있는 것으로 판단된다. Abstract: To develop a new functional agent for cosmetics

This study presents flowable fill material using collected CO2 byproduct, which prevents geotechnical sinking related to underground utilities in the vicinity of downtown areas. The physical and mechanical characteristics of calcium carbonate found using laboratory tests (the uniaxial compressive strength test, comparison of the shear base of dynamic behavior and restriction pressure, the freeze-thawing test) on 3, 7, 14, 28, and 56 days of the flowable fill were investigated and analyzed. The correlations of the unconfined strength, elastic modulus, flow, and w/c were suggested as evaluation indicators of the mechanical characteristics for the calcium carbonate flowable fill.

This paper presents the performance of the concrete included the bio sulfur derived from the landfill and additives. The bio sulfur was obtained from the landfill site and derived the various chemical process. The bio sulfur is the liquid type and the results of initial compression tests show that the bio sulfur itself is not good enough to generate the compressive strength. The additives which are paper ash and desulfurization gypsum added to support and increase the compressive strength of the bio sulfur concrete. The resistance of chemical and sodium ability of the bio sulfur and additive concrete were evaluated using SEM and EDS analysis. The structure of the bio sulfur and additive concrete shows the dense micro particle and hard enough to resist the chemical and sodium intrusion.