this study was conducted to investigate factors hindering the flow of breast milk, thus interfering with breast feeding during six weeks post delivery in women attending the health units associated with iran medical university in tehran (1993)   a total of 240 mothers were selected of whom 180 nursed their babies exclusively and 60 of them were giving addional helping formula.   based on the fi...

in the present study, mechanical properties and low cycle fatigue behavior of a solid-solutionized aa6061 aluminum alloy produced by equal channel angular pressing (ecap) process were investigated. the grain refinement after two passes of ecap significantly increased the yield stress and ultimate tensile stress and decreased the ductility of the alloy. however, the improvement of low cycle fati...