This paper discusses the effect of the species and property of pulp, the moisture content of paper and relative humidity,adding filler,the density of paper and pressing and drying on the hygroexpansive strain of paper.

And the influence of the paper density on the thermal conductivity of aluminosilicate fiber paper was investigated.

The sheets with different density are made by birch sulfate unbleached pulp.

Analysis of tightness in the design of wool fabrics;

Calculation of fabric tightness by linear regress;

Influences of Yarn Twist & Fabric Tightness on Fabric Stiffness;

Research on the Method and Device for Fast Testing Permeability and Compactability of Green Sand and Compaction of Mould;

This study evaluated urban soil compaction degree by comparing three compaction indexes, i.

Permeability, compactibility and mould compaction are important performance characteristics of green sand and mould.

Aiming at a current problem that paper density can not be measured on-line in the process of paper making,using outstanding analysis capability and nonlinear approximation capability of wavelet neural network to fit the non-linear relation between paper density and some on-line measurable parameter.