Hydrocarbon detection with data of crustal stress and density fields;

A schlieren was changed into a interferometer and which has been used in measurement and visualization of density field.

Image evolutionary analysis of density field induced by propagation of short cracks is a most discussed topic in the research of the damage caused by fatigue using ICT(industrial computed tomography).

This article analyzes the geometrical properties of the pipeline with heating tracer,sets up the mathematics model and calculates the two-dimensional,unstable temperature field and heat flux density field of soil around the pipeline by using finite elements method.