background: with regard to the importance of life skills, the present study deals with the effect of life skills training on general health of the students . materials and methods: this was a one-group, pre-test, post-test, quasi-experimental research. forty students were selected through purposive sampling method. the data collection tool was goldberg general health questionnaire. results: pai...

The aim of this research work is to evaluate the effects of coolant including nano- powder material for the cooling purpose in milling process and comparing the results with the conventional coolant. Generation heat and weak heat transfer reduces the tool life and also deteriorate surface roughness during milling operation. To overcome this problem, it is necessary to use coolant for cooling as...

in this research, our attempt is to monitor tool wear through the chip formations, forces, and temperature of edge of drill while drilling in superalloy plate to optimizes effective parameters, which lead to facilitate machining process to, improved tool life, and enhance the productivity. in this study, inconel718 superalloy material, and cemented coated carbide tool was selected for investiga...

Friction stir welding (FSW) has been widely used in of low melting point metal, such as Al alloy or Cu alloy. However, high Fe alloy, it is difficult to be welded by FSW because short life price tools. Silicon nitride tool can have both long and cost. In order obtain design guideline for silicon tool, the relationship between mechanical properties was examined. Two materials which had different...