In the first part, some theoretical models were established to simulate the distribution of flow rate of liquid, such as discrete model, differential calculus model and stochastic .

The fluence rate and the diffusion reflectance distribution of the tissue were discussed when the two surface sources(a Gaussian beam and a flat beam) with different beam size irradiated the tissue respectively,and then compared with the result which 635 nm laser beam incidenced into lung.

Influences of photosynthetic characters and light distribution on photosynthetic rate in the canopy of Navel orange leaves;

This paper numerically simulated the light distribution in biological tissues both in homogenuous and inhomogenuous slabs and semi infinitive media.

The light distribution and its influences on foliage, fruit-setting in the canopy of Chinese chestnut (Castaneamollissuma.

n the basis of experimental data,quantitative analysis by both physical and geometic optics and calculation by Mie's scattering theory,it is proved that the error of the calculated light energy distribution by the diffraction theory could not be neglected in the laser paticle sizer even for large particles relative to the light wavelength.

The light energy distribution of fruit-crop planting ecosystem in Ba Meng area of Inner Mongolia was studied.