The Failure on tube rod arm cylinder hydraulic excavator caused to lose production and processing time mining site. Investigation included visual inspection, chemical analysis, metallography analyze, microhardness test. Tube material used high silicon type while the standard ST52 carbon steel type. was broken crack several pieces. composition of has different in sulfur content. From hardness te...

Segregation has been widely discussed by social scientists and especially by urban geographers and planners over the past decades. However, regardless of their focus, most of these studies view segregation as an obvious case of spatial injustice. I argue that this implicit relationship between segregation, (in) justice, and space needs to be reexamined. This paper approaches this task by review...

Abstract The effect of the solid–wall boundary condition on the segregation behavior of a sand ternary mixture differing in size but having the same proportion has been investigated in a gas–solid bubbling fluidized bed. A multi-fluid computational fluid dynamics model incorporating the kinetic theory of granular flow has been used. The mass fraction profiles of the different-sized partic...