The dark decay time of the optical damage in thin crystal sheets was found to far exceed that in the thick crystal sheets.

Study on attenuation of strong surface wave in wavelet domain;

Frequency spectral analysis for the ultrasonic attenuation of carbon fiber reinforced plastics;

Anisotropy test instance of ultrasonic velocity and attenuation of coal sample;

The declines of both the UF membrane flux and solute permeation coefficient,and the influence of sodium ions on the membrane performance during the ultrafiltration process of cephalosprin C sodium solution were studied.

The decline of the flux of the flat membrane and the permeation coeffecient of solute,and the influence of sodium ion to the membrane,with cephalosprin C sodium solution as a model solution, has been investigated.

An analytical math model was established basing on three form and decline of biological memory and was used in intrusion detection system.

Existence and Decay Behavior of Solutions for a Parabolic Problem;

In the present paper, research methods, photoelectron creation and decay, photoelectron traps, the influence of intrinsic and extrinsic traps for electrons on their lifetimes and decay processes, and the relationship of photoelectron behavior with other physical properties were reviewed.