Recently, the use of non-ferrous metals has been increasing to lighten the weight of automobiles and parts. In particular, demand for non-ferrous alloy materials such as aluminum alloys and magnesium alloys is increasing. The purpose of this study is to calculate the optimization process of friction stir welding by using different materials of AA5052 and AA6061. By analyzing the reaction value of tensile strength and elongation by full factorial design and Custom Design Methodology. In other words, we analyzed the optimization process according to rotation speed, feed rate, tool angle and tool shape. In conclusion, the optimal process for tensile strength was achieved by using a tool with a rotation speed of 900 RPM, feed rate of 270, tool angle of 2.5° and a triangle tool. and The rotation speed was 1003 RPM, the feed rate was 314.5, tool angle of 1° and a triangle tool, it was able to get the maximum value of elongation when using a tool of the form.

This study was conducted in order to evaluate the anti-inflammatory activities of Phellinus linteus (PL) water extract against carrageenan- and cotton pellet-induced acute and chronic inflammation in rats. Animals were divided into four experimental groups for conduct of acute and chronic inflammations studies: the vehicle control group, positive control group (aminopyrine 100 mg/kg), PL 10 mg/kg group, and PL 20 mg/kg group. Oral administration of PL water extract has dose-dependent anti-inflammatory effects against both acute and chronic inflammation models. In carrageenan-induced paw edema, significant inhibition was observed at 0.5 and 1 h in the PL 10 mg/kg group and at 0.5, 1, 2, 3, 4, and 6 h in the PL 20 mg/kg group. In cotton pellet-induced granuolma formation, PL water extract at 10 and 20 mg/kg/day also showed significant inhibition in dry weights of granuloma. Results of the free radical scavenging assay showed that PL has a dose-dependent scavenging activity against 2,2-diphenyl-1-picrylhydrazyl free radicals. The results obtained in this study indicate that this plant material may be used beneficially as an anti-inflammatory agent having antioxidant action.