Abstract Development of sustainable cities requires safe and efficient pipeline networks for the transportation fluids. Ball valves are usually used to start/stop flow liquids or gases in pipelines, because they generate low hydraulic losses when valve is fully open position no leakage closed position. They highly recommended, quick operation needed emergency situations. European Union United S...

Soil erosion is one of the most important forms of land degradation that threatens continued and sustained agricultural production in Ghana. The most severely affected areas are the three northern regions especially Upper East Region, where large tracts of land have been destroyed by water erosion leading to soil depth reduction and decline in soil fertility. This study was carried out in Talen...

Scientists conducting research in the field of LGBTQ+ Mental Health, like scientists any other field, have option submitting their work to a more specialized or general interest jo...

 We investigate the existence of some‎ ‎large sets of size nine‎. ‎The large set $LS[9](2,5,29)$ is constructed and‎ ‎existence of the family $LS[9](2,5,27l+j)$ for $lgeq 1, ‎2leq‎ ‎j

we investigate the existence of some‎ ‎large sets of size nine‎. ‎the large set $ls[9](2,5,29)$ is constructed and‎ ‎existence of the family $ls[9](2,5,27l+j)$ for $lgeq 1, ‎2leq‎ ‎j