The composition of NiAl alloys have great effects on the structure and phase transformation temperatures, but the composition analysis is often disturbed by the difficulties in the separation of Ni and Al.

A new composition analysis method was developed based on the gas chro-matograph and the characteristics of binary hydrofluorocarbon (HFC) mixtures, and was used to analyze nine binary hydrofluorocarbon mixtures related to the mass fraction composition and the ratio of peak area.

Extraction and component analysis of polysaccharide of Fructus Trichosanthis;

Attractive activity to natural enemies and component analysis of the rinses from tea aphid body surface;

Enlightened by the independent component analysis (ICA),the authors presented a novel approach named component analysis based on kurtosis(CABK) to identify the overlapped peaks.

Bispectral analysis can reveal information of quadratic phase coupling of a time series and fits well the demands of characteristic extraction while on-line monitoring wear conditions of a milling cutter.

Bispectral analysis and dynamic spectral analysis are applied to the wind data of June, 1997, measured by MF radar in Yamagawa, Japan, to investigate nonlinear interactions among planetary waves, tidal waves and gravity waves in the mesopause region.