in concentration of hydrogen peroxide, first, the solution should be quite pure, and then, it concentrate with methods such as vacuum distillation and cooling crystallization, because impurities in the hydrogen peroxide solution in high concentrations are causing decomposition of this substance; that is very dangerous. the purpose of this article is separation of chromium and magnesium cations ...

The discrete element method (DEM) is usually applied in analyzing the scientifical origin/evolution of asteroids and landing/sampling regolith. In order to manage contact between non-spherical granules, Polygonal Contact Model (PCM) has been introduced into DEM method. This paper applies four different force models newly-proposed algorithm analyze their difference implication. include one linea...

the objective of this study was to assess the potential of cadmium sulfide nanoparticles loaded onto activated carbon (cdsn-ac) for the removal of sunset yellow (sy) dye from aqueous solution. adsorption studies were conducted in a batch mode varying solution ph, contact time, initial dye concentration, cdsn-ac dose. in order to investigate the efficiency of sy adsorption on cdsn-ac, pseudo-fir...

The development and implementation of wheel-rail contact models in multibody codes are two active research topics, aiming at improving the accuracy numerical results computational efficiency dynamics analysis. However, realism is challenged when considering switches crossings (S&C), where most adverse conditions occur. This paper presents a benchmark study performance MUBODyn, VOCO VI-Rail asse...

The process of infection during an epidemic can be envisaged as being transmitted via a network of routes represented by a contact network. Most differential equation models of epidemics are mean-field models. These contain none of the underlying spatial structure of the contact network. By extending the mean-field models to pair-level, some of the spatial structure can be contained in the mode...