http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Dosage Response of Atherosclerotic Lesions to Dietary Cholesterol in Rabbits
민병록,남기창,Min Du,Kathleen Mullin,AhnDongUk 한국식품과학회 2013 Food Science and Biotechnology Vol.22 No.5
Thirty New Zealand White rabbits were fed diets containing 0 (control), 1, 2, 4, or 8 g cholesterol/kg diet for 12 weeks to determine the cholesterol dosageresponse of plasma cholesterol and triglycerides, and the development of atherosclerosis. The concentration of plasma cholesterol increased proportionally with the dietary cholesterol dosage during the first 4 weeks, then remained constant until the 12th week. The plasma triglycerides and TBARS concentrations gradually increased with feeding time when rabbits were fed 2 g dosages. Aortas from rabbits fed a 2 g dosage developed moderate to severe multifocal or diffusive atherosclerotic lesions. Aortas from rabbits fed 4 and 8 g dosages were diffusely affected with massive atherosclerotic lesions, and had severe calcification and Alcian blue-positive foci throughout the media of the aorta. These results indicate that at least 2 g of cholesterol/kg in the diet is needed to generate atherosclerotic lesions in rabbit aortas.
Sinfony 간접복합수지와 비귀금속합금간의 전단결합강도와 파절양상
민병록,정인성 대한치과기공학회 2008 대한치과기공학회지 Vol.30 No.2
The purpose of this study was to investigate the effect retention element formed by metal surface treatment method on the bond strength of indirect composite resin and metal. The metal specimens were cast from Ni-Cr alloy(Rexillium III). They were divided into 5 groups by applied retention element: 50um aluminium oxide sandblasting group, 250um aluminium oxide sandblasting group, 0.2 retention crystal group, 10% H2SO4 solution etching group, 110um RocatecTM Plus system group. Total 50 metal specimens were veneered with Sinfony indirect composite resin system. Specimens were tested for shear bond strength on an Instron universal testing machine and fracture mode of fractured specimens were analyzed by SEM and EDS. 1. 0.2mm retention crystals were most effective in improving the resin-metal shear bond strength (p<0.05). 2. Sandblasting by 250um aluminium oxide were more effective than sandblasting by 50um aluminium oxide in improving the resin-metal shear bond strength(p<0.05). 3. Fracture mode of resin-metal fractured surface were cohesive failure mode in 0.2mm retention crystal, mixed failure mode in sandblasted specimens, etched specimens and the specimens sandblasted with 110um RocatecTM Plus system.