Zhang, Jin; Guo, Cheng; Cai, Wensheng; Shao, Xueguang published an article in 2021. The article was titled 《Direct non-trilinear decomposition for analyzing high-dimensional data with imperfect trilinearity》, and you may find the article in Chemometrics and Intelligent Laboratory Systems.Recommanded Product: 3-Hydroxybenzaldehyde The information in the text is summarized as follows:
Trilinear decomposition has been employed in the anal. of three-way anal. data. However, it is difficult to keep a perfect trilinear structure for the data in real applications. A direct non-trilinear decomposition (DNTD) algorithm is proposed in this study for analyzing the three-way data with imperfect trilinearity caused by the shift or the variation of the chromatog. or spectral profiles in repeated measurements. In the method, two alternating steps are contained to resolve the constant and shifting profiles for each component, resp. The first step is based on a pseudo-trilinear decomposition, and the second step involves a slice-based matrix decomposition Furthermore, for reducing the ambiguity caused by the relaxation of trilinear constraint, an average profile regularization is introduced. Three datasets were used to validate the proposed method, including a simulated spectral dataset, a gas chromatog.-mass spectrometry (GC-MS) dataset and a flow injection anal. (FIA) dataset. Furthermore, a comparison with parallel factor anal. (PARAFAC), alternating trilinear decomposition (ATLD), PARAFAC2 and multivariate curve resolution-alternating least squares (MCR-ALS) was performed. The profiles with variant shifts were correctly extracted and a further understanding of the FIA dataset was obtained. In the experimental materials used by the author, we found 3-Hydroxybenzaldehyde(cas: 100-83-4Recommanded Product: 3-Hydroxybenzaldehyde)
3-Hydroxybenzaldehyde(cas: 100-83-4) can be used as a reactant along with ethyl acetoacetate and thiourea in the synthesis of corresponding dihydropyrimidine-2-thione (monastrol), using Yb(OTf)3 as a catalyst by Biginelli cyclocondensation reaction.Recommanded Product: 3-Hydroxybenzaldehyde
Referemce:
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