Study of the calculating formulas in the minimum section of the gray casting iron pouring system

The method, which is derived from the least cross section difference of the physical quantity, has shown to produce a reliable result in the presence of error sources, such as noise, phase discontinuity more than π and insufficient sampling, etc.

Study on the species richness and minimum sampling area in both natural and artificial Pinus tabulaeformis forests;

Determination of species-area relationships and minimum sampling area for the shrub communities in arid valley in the upper reach of the Minjiang River;

Minimum sampling area and species richness of riparian community in Erdaobaihe forested watershed.;

AIM:To report the usefulness of a new parameter(maximum cross sectional area) in the measurements of B-scan ultrasonography to evaluate the progress of choroidal metastatic tumour size during the follow-up of patient.