The relationship between ribavirin therapy and descent of heart rate in SARS patients;

In terms of continuity equation,movement equation of transient flow and water head loss theory in open channel in hydrodynamics,the decay process of landslide surge is divided into two stages,respectively,sharp-decay stage and slow-decay stage.

The highly oscillating and slow attenuation,which are characteristic of Green s function and its gradients,are removed in this method so that the accuracy and efficiency are improved on a large scale.

The basic theories underlying the reduction of the group velocity of light are introduced and methods for achieving ultraslow light propagation are discussed.