Heavy oil is commonly distributed in the Erlian Basin, North China. It can be divided into two genetic types: the primary and the secondary. Primary heavy oil i
A new method of fault analysis and detection by signal classification in rotating machines is presented. The Local Wave time-frequency spectrum which is a new m
In civil engineering, the nonlinear dynamic instability of structures occurs at a bifurcation point or a limit point. The instability at a bifurcation point can
Magnetic properties of nanocrystalline Fe60Cr40 powders prepared by mechanical alloying in vacuum and air were investigated by utilizing the measurements of mag