In order to make the students understand clearly the important feature of the standing wave energy,which is only transmitting within a limited area and nonlinear,we first deduce an energy formula for the wave loop and node,then analyze qualitatively by presenting a series of charts to show the energy transition between the wave loop and the node.

The conditions of antinode and node formed on the ground are also discussed.

Through the quantitative discussion about the energy of the node, loop and there between, the energy of standing waves is further analysed.

The curative effect of endovascular abdominalaortic aneurysm repair and middle-long term follow-up;

A case of multiple tuberculous aneurysm of the abdominal aorta;

Change of myocardial systolic and diastolic function in New Zealand rabbits after abdominal aortic constriction;