According to the common problem of durability evaluating with fuzziness,an optimal model which takes advantages of object fucntion of maximum apparent density was constructed.

Sketching on methods of measuring apparent density of inorganic chemical products;

Influential factors on apparent density and oil absorbency of suspension resin;

Influences of the apparent density and aging whiteness of PVC on the rheological properties of materials;

Prepration of PVC resin with high bulk density in the presence of compound dispersant;

The effects of mica content on the properties of mica glass composite materials fabricated from recycled soda lime glass powders and natural mica powders were studied by the measurement of bulk density and the complex relationship of the bulk density with mica content were analyzed by SEM.

In this paper,the author completely determines the index set of maximum density for the class of n order nonsymmetric imprimitive irreducible Boolean matrix with at least one pair of nonzero symmetry entries and whose given period is two.

Effect of calcination condition on pore volume & apparent bulk density of FCC catalyst was studied.

air entraining agent,emulsion powder and cellulose ether on the workability,air content and dry apparent density of EPS thermal insulating mortar are studied,the relationship of air content,workability and dry apparent density are analyzed.

Effects of mix proportioning of powdered latex and polystyrene granule insulating slurry on its performance were studied through a great deal of experiments,based on which optimized proportioning with low dry apparent density, low heat conductivity,high compressive strength was obtained as consistent with standard requirements so that case history could be provided for on-site practice.