The non-abelian tensor product of groups which has its origins in algebraic K-theory as well as inhomotopy theory, was introduced by Brown and Loday in 1987. Group theoretical aspects of non-abelian tensor products have been studied extensively. In particular, some studies focused on the relationship between the exponent of a group and exponent of its tensor square. On the other hand, com...

Abstract A wire of a β-Titanium alloy known as Gum Metal was cold rolled to reduction 80% and heat treated for times in the range 3-120 minutes at fixed temperature 740 °C yield set partially recrystallized microstructures. The recrystallization course evaluated by light optical microscopy Electron Backscatter Diffraction, based on which kinetics analysed using Johnson-Mehl-Avrami-Kolmogorov (J...

The Coronavirus pandemic has been one of the most complex public health problems, in its magnitude, up to present moment human history. One possibility guide policies combat this disease is proposition predictive models regarding dissemination SARS-CoV-2. This article aims some methods, non-linear fits and computational used estimate propagation countries such as Italy Brazil. We highlight a So...

Nb–Ti microalloyed low carbon high strength alloy (HSLA) steels are used to fabricate components, particularly for the automobile and piping applications requiring optimum combination of mechanical properties along with good weldability. These depend on transformed ferrite microstructure grain size obtained after cooling from hot rolling temperatures which always well above austenitizing temper...

The hydration kinetics of tricalcium silicate (C3S), the main constituent of portland cement, were analyzed with a mathematical ‘‘boundary nucleation’’ model in which nucleation of the hydration product occurs only on internal boundaries corresponding to the C3S particle surfaces. This model more closely approximates the C3S hydration process than does the widely used Avrami nucleation and grow...

The present paper shows the results of a nucleation and crystallisation study of a Nafluorrichterite glass carried out by dynamic scanning calorimetry (DSC). The kinetic study was performed using different procedures (Kissinger, Matusita-Sakka and Kissinger-AkahiraSunose (KAS) methods), and the Avrami parameter was determined from the Ozawa and Malek approximations and the Malek equation. The r...

Switching dynamics of nanoscale ferroelectric capacitors with a radius of 35 nm were investigated using piezoresponse force microscopy. Polarization switching starts with only one nucleation event occurring only at the predetermined places. The switching dynamics of nanoscale capacitors did not follow the classical Kolmogorov-Avrami-Ishibashi model. On the basis of the consideration of two sepa...

Classical overall transformation kinetics theory for grain boundary nucleated transformations relies on the assumption that the parent phase grain size is uniform. In the present work the theory is adapted to deal with the case where there is a distribution in the size of the parent grains, as is often found in practice. It is demonstrated that the overall transformation rate is fastest when th...