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Sun-Hye Choi,Myung-Ja Kwon,Mi-Jeong Kim,Sun-Jin Kwon,Yeong-Ho Baek,Yeong-Ok Song 한국식품영양과학회 2006 Preventive Nutrition and Food Science Vol.11 No.3
Freeze-dried kimchi fractions, water-soluble (WSK) versus water-insoluble (WISK), on their effects on plasma lipids and for their fibrinolytic activities were studied. Nineteen middle-aged healthy subjects were assigned to WSK, WISK, or placebo during 6 weeks of kimchi supplementation. Subjects in the WSK and WISK groups were supplemented with 3 grams of kimchi pills (equivalent to 60 grams of fresh kimchi), while the placebo group was on their normal diets. LDL/HDL and atherogenic index decreased in the subjects who received kimchi pills, but not in those in the placebo group. The levels of plasma triglyceride were significantly decreased in the WSK group compared with those in the WISK group (p<0.05). However, there was no difference in the levels of total cholesterol and HDL between the two groups. Fibrinolytic activity of WISK was significantly higher than that of WSK.
Song, Young-Sun,Choi, Chun-Yeon,Suh, Hongsuk,Song, Yeong-Ok The Korean Society of Food Science and Nutrition 2004 Preventive Nutrition and Food Science Vol.9 No.3
Previous studies have shown that kimchi and kimchi-derived 3-(4'-hydroxyl-3', 5'-dimethoxyphenyl) propionic acid have anti-oxidative and hypolipidemic effects in rats and rabbits. This study was designed to investigate whether chemically synthesized 3-(4'-hydroxyl-3', 5' -dimethoxyphenyl) propionic acid (HDMPPA) may ameliorate oxidative stress through the regulation of nuclear factor KB (NFkB) activation in lipopolysaccharide (LPS)-stimulated RAW 264.7 murine macrophage cells. Treatment of RAW 264.7 cells with 400 uM of HDMPPA significantly reduced LPS-stimulated nitric oxide (NO) production. Treatments with HDMPPA at 100 uM to 400 uM concentrations significantly elevated glutathione (GSH) level. However, cell viability and thiobarbituric acid-reactive substances (TBARS) concentrations were not affected by the concentrations of HDMPPA used. The specific DNA binding activities of NFKB, a transcription factor which is sensitive to oxidative stress, were not down-regulated by HDMPPA treatments. These results suggest that HDMPPA may have weak anti-oxidative activity against LPS challenge by scavenging NO and stimulating GSH production.
Radargrammetry를 이용한 C-밴드 및 X-밴드 SAR 위성영상의 DEM 생성 평가
송영선(Song, Yeong Sun),김기홍(Kim, Gi Hong) 대한공간정보학회 2013 대한공간정보학회지 Vol.21 No.4
SAR(Synthetic Aperture Radar) 영상으로부터 3차원 정보를 추출하는 방법에는 InSAR기법과 radargrammetry기법이 있다. 지금까지는 정밀한 DEM의 생성을 위해서 InSAR가 주로 사용되어 왔으나 InSAR는 지형의 기복이 심하거나 혹은 식생지역에서도 두 영상사이에 높은 상관도를 요구한다. 이에 비해 radargrammetry는 InSAR에 비해서 두 영상의 상관도에 덜 민감하기 때문에 경우에 따라서 DEM을 생성하는데 더 효과적일 수 있다. 특히 두 영상의 상관도를 유지하기가 어려운 X-밴드 SAR 위성영상의 경우는 DEM의 생성에 radargarmmetry가 더 유용할 수 있다. 본 연구에서는 C-밴드 위성인 RADARSAT-1의 입체위성영상과 X-밴드인 TerraSAR-X 입체위성영상에 radargrammetry기법을 적용하여 DEM을 생성하고, 그 특성을 분석하였다. To extract the 3D geometric information from SAR(Synthetic Aperture Radar) images, two different techniques, interferometric SAR and radargrammetry, have been widely used. InSAR is most widely used for the generation of precise DEM(Digital Elevation Model) until now. But, Interferometric SAR requires severe temporal correlation over areas covered with vegetation and high relief areas. Because radargrammetry is less sensible to temporal correlation, it can provide better results than interferometric SAR in certain, especially X-band SAR. In this paper, we assess the properties of DEMs generated by radargrammetry using stereo C-band RADARSAT-1 images and X-band TerraSAR-X images.