The effects of different relative molecular weight of partially hydrolyzed polyacrylamide (HPAM), pore size distributions of cores, different temperatures and salinity on the inaccessible pore volume (V_(IP)) of HPAM were studied by using double-slug method.

Objective: To investigate the thermal expansion property and pore size distribution in the matrix of ZirconiaToughened Glass Infiltrated Nanometer-ceramic Composite(Al2O3/nZrO2).

The fractal dimension of pore size distribution is determined according to the slope of the correlative line between pore volume and pore diameter in logarithmic graphics.

Effect of pyrolysis conditions on the char surface area and pore distribution;

Quantitative measurement of ceramic uranium dioxide porosity and pore distribution;

Relation of pore distribution of coal with water infusion increment in seams;

The porosity distribution diagram is various in dif.

Recognizing core\'s porosity distribution feature clearly and characterizing it quantitatively is very important when studying core sample\'s seepage feature.

The expression of porosity distribution in filter cakes is derived by solving the partial differential equation of filtration.

In the investigation,the variation of the current relative density,the porosity distribution and porosity va-riation in the vertical section were all analyzed by means of digital-image processing technology.

A model for liquid drainage was developed based on average velocity to get the macroporosity distribution of aluminum foam in liquid state.