The results show that within the magnitude range of 1.5~5.3, the seismic moments are 10 10~10 16 N·m, the corner frequencies are 0.2~0.8 Hz, radii of the focal rupture are 200~2 500 m and the stress drops are 0.1×105~20×105 Pa.
This paper has proceeded qualitative analysis to biochemical reaction's mathematic modelling (1)dxdt=1-x~ny~mdydt=ay(x~ny~(m-1)-1). on the equations(1),and have obtained the criterion that the singular piont(1,1)is the nodal point or the tough focal as well as may be the central point or fine focal.
Under the condition of the initial forming of buyer market in china, in order to solve the economic problem whose focal point is lack of efficient demand, consumer credit has been strengthened to develop gradually.
Methods:Routine and Feridex-enhanced MRI were performed in17patients with suspected focal hepatic lesions. The pulse sequences of Feridex included:T 2 W/TSE,T 1 W/SE,T 2 FS /TSE,T 2 W/FFE,T 1 W/FFE. The effects of Feridex on signal intensity,SNR m of lesion vs normal hepatic tissue were assessed with quantitative analysis.
The result showed that there were focal rCBF decreases in 30 of 34 patients and the detecting rate of epileptic focus was 88. 24%. Compared with CT and scalp or sphenoid electrode EEG,rCBF SPECT showed more advantage for discovering the abnormalities in the epileptics.