We performed a screening evaluation of the human health risk posed by nanocarbon materials at lifecycle stages manufacturing and use solid carbon generated in hydrogen manufacture methane decomposition. first estimated atmospheric emission volumes produced small-, medium-, large-scale plants. then due to tire wear, which largely contributes usage. Next, we concentration an simulation using METI...

Flows within porous media play important roles in many scientific and industrial systems. However, the case wherein such flows become turbulent has not been completely understood, particularly, from a mathematical viewpoint. In this study, $k-\varepsilon$ model (the variable $k$ denotes kinetic energy per unit mass $\varepsilon$ dissipation rate for energy), which widely used usual flow clear f...