Investigation of the compression elasticity of single biomacromolecules by atomic force microscopy;

As one kind of flagelliform biomolecules, the elasticity of DNA molecule can be divided into three basic parts: stretching elasticity in portrait, compression elasticity in landscape orientation and restoration elasticity.

The structure of the elastic blank holding device was improved.

Thus it has the better heat insulation,higher compression elasticity,higher water vapor permeability and other properties.

The thermal property,bulkiness and compression elasticity were tested according to relevant standards,and the relations between the tested properties and the content of kapok fiber,down and down fiber in the wadding were investigated.

Based on the two dimensional constitutive relationship of piezoelastic material, an analytical solution to a cantilever beam with piezoelectric layers subjected to electric field was derived together with an example.

The control of the piezoelastic laminated cylindrical shell s vibration under hydrostatic pressure was discussed.

On the basis of the calculation of compressed roller area and the rubber rigidity test, the authors give a method of calculating the elastic pressure of offset rollers and the waveform of time domain.

Based on the elastic deformation theory for rolls, through synthesizing the elastic flattening between rolls, the bending deflection of rolls and the elastic flattening between rolled pieces and work rolls, the elastic deformation model for rolls is established with deformation coordination equation.