Abstract To explore the influence of different processing parameters on efficiency electrochemical machining and surface morphology, removal spikes was simulated by COMSOL Multiphysics simulation software. And combined with experiments, micro-surface analyzed compared. The results showed that amount increased increase voltage, time, electrolyte concentration, decreased in gap. appropriate not o...

Three-dimensional hydroxyapatite-chitosan (HA-CS) composites were formulated via solid-liquid technic and freeze-drying. The prepared had an apatitic nature, which was demonstrated by X-ray diffraction Infrared spectroscopy analyses. impact of the solid/liquid (S/L) ratio content molecular weight polymer on composite mechanical strength investigated. An increase in S/L from 0.5 to 1 resulted co...

Placing micro-textures on a tool surface can play an anti-wear and friction-reducing role capture impurities improve the tool-chip friction state, thus improving cutting performance of quality workpiece. To ensure processing in micro-texture-coated tool-cutting process, process parameters micro-texture are limited to smaller parameters, which reduces efficiency increases cost. Aiming at this pr...

introduction: although left ventricular(lv) function parameters measured by gated myocardial perfusion spect (gspect) have been validated, experimental data have revealed that the calculated the lv function parameters using gspect are affected by patient populations as well as particular acquisition and processing conditions. we tried to determine the normal values of gspect in an iranian popul...