RESULTS: From 10 days subgroup to 45 days subgroup, bone volume fraction、trabecular thickness、trabecular number and volume density were gradually increased (P<0.05), while trabecular separation distance and surface density were gradually decreased (P<0.05).

When the separation distance is large, the complex interactive waves system is observed. After centain separation distance, the normal shock wave is formed in the front of the separated flow region before afterbody, hence the afterbody effect to forebody has been cut off.

The validity of N-S equations, the distribution of flow parameters and aerodynamic force and the relation between axial force and separation distance have been analyzed.

When straighten the knee joint,the separation distance of the fractured patella was less than 2 cm in 4 patients,ranged from 2 to 3 cm in 7 patients,exceeded 3 cm in 2 patients.

A series experiments of different intensity of tropical cvctone, separation distance and basic flow have been carried out with a barotropic primitive equation model in order to investigate the mutual rotation and the attraction of two tropical cyclones and their motion in environmental flow.

The major contribution to the mutual reactance is from the dominant mode, since the higher modes decay rapidly with the increasing the probes' of separation distance.

In this paper, the method for the optimal gray threshold is given, which is based on the maximum class separation distance criterion of pattern recognitive decision theory.

Experimental results fitted well to the curve calculated up to (E0)4 according to the Onsager equation with the initial quantum yield of the bound electron-hole pairs assumed to be ?0 = 0.2 and the charge separation distance in the pair of r0 = 12 ?.

The influences of the separation distance of the particles, the volume fraction of the particles and the applied electric field on the shear yield stress were investigated.

Here we report on the development of an instrument, based on atomic force microscopy (AFM) technology, that enables the quantification of inter-particle force as a function of separation distance.

Regardless of the methods used in deriving the vdW interaction between two bodies as a function of their separation distance, the Hamaker constant is always an essential parameter involved.

The results of direct measurement by atomic force microscopy are compared with ensemble powder properties, as well as a simple theoretical expression that predicts the magnitude of the adhesion force as a function of the separation distance.

Assuming that the intermediate system decayes with a statistical lifetime, the general behaviour of the threefold differential cross section d~3σ/dZdEdθ in the dissipative collisions of 68MeV ~(12)C+~(27)Al and 68.6MeV ~(12)C+~(40)Ca system are analysed in the diffusion model framework. The lifetime of the intermediate system and the separation distance for the completely damped deep inelastic component are obtained. The calculated results and the experimental data of the angular distributions and Wilczynski...

Assuming that the intermediate system decayes with a statistical lifetime, the general behaviour of the threefold differential cross section d~3σ/dZdEdθ in the dissipative collisions of 68MeV ~(12)C+~(27)Al and 68.6MeV ~(12)C+~(40)Ca system are analysed in the diffusion model framework. The lifetime of the intermediate system and the separation distance for the completely damped deep inelastic component are obtained. The calculated results and the experimental data of the angular distributions and Wilczynski plots are compared. The probable reasons of the differences between them are briefly disscused.

In the paper, large deformation of symmetry fission has been described by a biquadratic surface revolution instead of several quadratic equations. Based on the standard liquid drop model, variation calculation of deformation energy have been performed, a better shape with a gruop of coefficient (bi) than Cassinian ovaloid obtained. The shape with (bi) has lower deformation energy than that of ovaloid, at same separation distances between C. M. of half bodies. The so-called shape optimum Ⅱ with (bi) can...

In the paper, large deformation of symmetry fission has been described by a biquadratic surface revolution instead of several quadratic equations. Based on the standard liquid drop model, variation calculation of deformation energy have been performed, a better shape with a gruop of coefficient (bi) than Cassinian ovaloid obtained. The shape with (bi) has lower deformation energy than that of ovaloid, at same separation distances between C. M. of half bodies. The so-called shape optimum Ⅱ with (bi) can generally be used in mass range 200-300. The fission barrier for opt. Ⅱ is lower and thiner than that of the ovaloid, because after the saddle point the potential descends more quickly. The saddle point is a little bit pressed for the shape opt. Ⅱ. There are significant differences of deformation energy between the shape opt. Ⅱ and ovaloid, when neck in middle appears. The neck cross-section of the opt. Ⅱ is larger than that of ovaloid before the scission point be reached, and equal or thiner near the point.

A series experiments of different intensity of tropical cvctone, separation distance and basic flow have been carried out with a barotropic primitive equation model in order to investigate the mutual rotation and the attraction of two tropical cyclones and their motion in environmental flow.The results from the ex-permients indicate: the binarv tropical cyclones within a certain critical distance rotate evidently (more than 10 everv 12 hours) under the condition of no environmental flow, the critical...

A series experiments of different intensity of tropical cvctone, separation distance and basic flow have been carried out with a barotropic primitive equation model in order to investigate the mutual rotation and the attraction of two tropical cyclones and their motion in environmental flow.The results from the ex-permients indicate: the binarv tropical cyclones within a certain critical distance rotate evidently (more than 10 everv 12 hours) under the condition of no environmental flow, the critical distance varies with the intensity and the characteristics of wind fields of the two tropical cyclones; the distance, within which two cvclones are evidently attracted) is much shorter than the critical distance of mutual rotation.It is shown that the rate of mutual rotation of two tropical cvclones is proportional to the intensity of tropical cvclone and reve-rSely proportional to the ratio with which the tangential wind velocitv decreases and the square of the separation distance of two cvclone centers.