The procedure consisted of several steps: first,background correction was performed from the original data,and then the target component spectrum was multiplied by the projection matrix of the standard component spectrum,finally,cosine value between target component spectrum and its projected residue was applied as a criterion to test the peak purity of target component.

The procedure consists of several steps: first,the projection matrix was composed with the spectrum of the standard component and the spectrum of zero-component regions before and after the target component peak,and then the target component spectrum is multiplied by the projection matrix,finally,cosine value of between target component spectrum and its projected residue is applied as a criterion to test the peak purity of target components.

The interactions depending on the impact parameter (which is characteristic of the target component) are investigated.

Assuming a linear background, the target component, which can be a small group of components, is simultaneously determined together with co-existing components.

Experiments 2, 3 and 4 suggested that affordances of an irrelevant main body of an object influences motor planning processes only when the local target component of the object is analysed as a meaningful part of a graspable object.

Many extracting solutions and extraction sequences can be found in the literature and the abilities of any given extracting solution to solubilise a target component of a soil/sediment system is much debated.

The mass flow of the target component measured as the permeation rate was determined via the quasi-continuous observation of the loss in the permeation tube mass during the measuring time.

A procedure for recognizing peak purity of Cassiae Semen chromatographic fingerprints by chemometrics method was described.The procedure consisted of several steps: first,background correction was performed from the original data,and then the target component spectrum was multiplied by the projection matrix of the standard component spectrum,finally,cosine value between target component spectrum and its projected residue was applied as a criterion to test the peak purity of target component.Three pure peaks...

A procedure for recognizing peak purity of Cassiae Semen chromatographic fingerprints by chemometrics method was described.The procedure consisted of several steps: first,background correction was performed from the original data,and then the target component spectrum was multiplied by the projection matrix of the standard component spectrum,finally,cosine value between target component spectrum and its projected residue was applied as a criterion to test the peak purity of target component.Three pure peaks of emodin,chrysophanol and physcion of chromatographic fingerprints of Cassiae Semen crude drugs was identified by the proposed method.Experimental results showed that the method of peak purity identification of chromatographic fingerprints was reliable.

A procedure for identification peak purity of chromatographic fingerprints by orthogonal projection is developed.The procedure consists of several steps: first,the projection matrix was composed with the spectrum of the standard component and the spectrum of zero-component regions before and after the target component peak,and then the target component spectrum is multiplied by the projection matrix,finally,cosine value of between target component spectrum and its projected residue is applied as a criterion...

A procedure for identification peak purity of chromatographic fingerprints by orthogonal projection is developed.The procedure consists of several steps: first,the projection matrix was composed with the spectrum of the standard component and the spectrum of zero-component regions before and after the target component peak,and then the target component spectrum is multiplied by the projection matrix,finally,cosine value of between target component spectrum and its projected residue is applied as a criterion to test the peak purity of target components.Three pure peak,emodin,physcion and chrysophaol of chromatographic fingerprints of Cassiae Semen crude drugs,was identified by the proposed method.Experiment results show the method of identification peak purity of chromatographic fingerprints by orthogonal projection is reliable;the effect of spectral and chromatographic background can be corrected.