The metallurgical modification in non-ferrous metal alloys is carried out to adapt not only physical or mechanical properties their applications, but also improve machinability. In the case of aluminum for optical reduction grain size an alteration aimed at adapting dimensions microstructure dimensional scale used machining conditions. cutting section are often much smaller than average size, w...

This study aims to demonstrate the quantification of peptides based on isotope dilution surface enhanced Raman scattering (IDSERS). SERS spectra of phenylalanine (Phe), leucine (Leu) and two peptide sequences TGQIFK (T13) and YSFLQNPQTSLCFSESIPTPSNR (T6) as part of the 22-kDa human growth hormone (hGH) were obtained on Ag-nanoparticle covered substrates. On the basis of the dominant Phe and Leu...

A three-dimensional numerical model is used to simulate the Friction Stir Welding (FSW) process using the computational fluid dynamics package ‘FLUENT’. Two mechanical models: the Couette and the Visco-Plastic fluid flow models for Al-6061-T6 were simulated. The simulation results are compared to experimental data for Al 6061-T6 welded at high rotational (1500–5000 rpm) and travel speeds rangin...

In this paper, the upper bound limit analysis of thin plates in bending is addressed using various types of triangular finite elements for the generation of velocity fields and second order cone programming (SOCP) for the minimization problem. Three different C-discontinuous finite elements are considered : the quadratic 6 node Lagrange triangle (T6), an enhanced T6 element with a cubic bubble ...

Nowadays, CMT is used for joining dissimilar thickness of metals achieving higher mechanical strength by using properties both the metals. Joining aluminium alloys with gas metal arc welding cold transfer (GMAW-CMT) process, primary objective this work. butt 6061-T6 (3.18 mm) and 6082-T6 (2 was carried out ER4043 (Al–5%Si) wire. Mechanical microstructural characterization were weld bead. Micros...

The purpose of this study was to investigate the protective effects of ischemic post-conditioning on damage to the barrier function of the small intestine caused by limb ischemia-reperfusion injury. Male Wistar rats were randomly divided into 3 groups (N = 36 each): sham operated (group S), lower limb ischemia-reperfusion (group LIR), and post-conditioning (group PC). Each group was divided int...