One-fluid and two-fluid MHD approaches are used to investigate configuration instability prior to onset of the substorm expansion phase in the near-Earth magnetotail.

The key problem is if the ions upflow can really trigger the substorm onset? A 3-D resistive MHD simulation is carried o.

The original kind of comparatively expand inspector of Unit 6 in Shao guan Power Plant is zqx201,it has lower precision.

By the use of the intensity-dependent coupling Jaynes-Cummings model under the resonance condition, the phase properties of radiation field after the interaction of atoms are discussed, and compared with the phase of coherent state, it is discovered that the phase expansion can be squeezed by selecting suiltable parameters.

Fractal Image Retrieval Based on Similar Extension;

According to the problem of content-based image retrieval,a similar extension fractal coding arithmetic by construct-ing irregular region is presented.