Switching mechanism and optimisation research on a pressure-attitude adaptive adjusting coal seam water jet slotter

To investigate the attitude-switching mechanisms of existing jet slotters, which integrate drilling, punching and slotting operations, and to improve its fracture ability, we used the power bond diagram theory to analyse the dynamic flow pressure, and force of slotters.A mathematical model was developed Dessert Dishes for the dynamic characteristic

read more

REVISITING THE RESPONSIBILITY TO PROTECT AS AN INTERNATIONAL NORM

The purpose of the paper is to revisit the origin of the principle of responsibility to protect (R2P) focusing on few cases and reflecting on the troubled journey that it has made maneuvering its structural constraints posed by hegemonic powers and geopolitical manipulations, by employing historical methods in tracking its evolution.The inter-state

read more


Effect of zinc phosphate chemical conversion coating on corrosion behaviour of mild steel in alkaline medium: protection of rebars in reinforced concrete

We outline the ability of zinc phosphate coatings, obtained by chemical conversion, to protect mild steel rebars against localized corrosion, generated by chloride ions in alkaline media.The corrosion resistance of coated steel, in comparison with uncoated rebars and coated and uncoated steel rebars embedded in mortar, were evaluated by open-circui

read more