본 연구에서는 참마와 명아주의 항산화 및 항염증 효능을 평가하기 위해 참마와 명아주 에탄올 추출물을 이용하여 free radical 소거활성, enzyme-linked immunosorbent assay (ELISA) 실험을 수행하였다. 참마와 명아주 추출물의 free radical (1,1-diphenyl-2-picrylhydrazyl, DPPH) 소거활성(EC50)에서 각각 2.386, 0.524 mg/mL로 측정되었다. 또한 참마와 명아주 추출물의 혼합 시료의 free radical 소거활성은 참마 추출물 : 명아주 추출물 비율이 2 : 1일 때 가장 뛰어난 것으로 나타났다. IL-6와 TNF-α의 ELISA 실험을 통해 항염증 효능을 평가한 결과, 마우스 비장세포에서 IL-6의 경우 1 mg/mL 농도에서 참마 추출물은 대조군과 대비하여 27.17% IL-6 생성을 감소시켰으며, 명아주 추출물은 72.30%의 감소를 나타내었다. TNF-α의 경우 참마 추 출물은 61.97%, 명아주 추출물은 77.85%로 유의성 있는 TNF-α생성 감소 효능을 나타내었다. 이 결과들을 통하여 참마와 명아주 추출물은 항산화, 항염증 효능을 가지고 있으며, 이를 활용하여 항염증에 효과가 있는 천 연물 제제에 응용 가능성이 있음을 확인하였다.

In the previous result, the flexural strength of geopolymer prepared was affected by the evaporation of water content or the shrinkage rate in the curing process of specimen. We investigated the effect of SiO2/H2O ratio on the physical property of geopolymer prepared in this research. The specimen of geopolymer tile was made from mine tailing and melting slag. The maximum flexural strength was obtained at SiO2/H2O ratio of 0.21 under our experimental condition. And the lowest was obtained at SiO2/H2O 0.41. EDS analysis was acted to elucidate this cause. According to the results, it was due to the extent of geopolymerization at the inside and outside of specimen.

In this work, the effect of CaO and Fe2O3 on the geopolymer made from mine tailing and melting slag has been studied. Geopolymer was made from mine tailing, melting slag and blast furnace slag. The mechanical property of geopolymer prepared was affected by raw material used. Compressive strength of the geopolymer using blast furnace slag was higher than the geopolymer using melting slag. Because CaO and Fe2O3 content of two-type geopolymers was different. Therefore, the content of these controled to find out how to affect the property of geopolymer. According to the result of FT-IR(Fourier transform infrared spectroscopy), the compressive strength of geopolymer increased by activation of CS- H gel with increasing CaO content. In contrast, the compressive strength of geopolymer decreased by inhibition of geopolymerization with increasing Fe2O3 content. According to the result of XRD(X-ray diffraction), the geopolymerization was weakened by formation of olivine, goethite.

In this study, we took the geometrical character of the river channel junction and hydrologic conditions as independent variables, and hydraulic behavior characteristics as an independent variable. The result, after multiple analysis was carried out, proved that, except for the generating area of the accelerating zone of velocity the accelerating zone and both the main channel and the tributary zone of stagnation the stagnation zone, there was correlation of over 90%. Also, derived presumed expression of the hydraulic characteristics of the junction was applied to the real natural channel - the river channel of the Guem-ho main channel (the A-yang bridge to the Guem-ho bridge). As the result, it proved that it represented hydraulic characteristics relatively well.