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Chemometrics applied to the discrimination of synthetic fibers by microspectrophotometry
chemometrics dye loading textile fibers multivariate statistics polyester acrylic
2015/5/21
Microspectrophotometry is a quick, accurate, and reproducible method to compare colored fibers for forensic purposes. The use of chemometric techniques applied to spectroscopic data can provide valuab...
Discrimination of color copier/laser printer toners by Raman spectroscopy and subsequent chemometric analysis
Forensics Raman Color Toners Chemometrics
2015/5/21
Toner analysis has become an area of increased interest due to the wide availability of laser printers and photocopiers. Toner is most often encountered on paper in questioned document analysis. Becau...
Potential Utility of DNA Sequence Analysis of Long-term-stored Plant Leaf Fragments for Forensic Discrimination and Identification
Potential Utility DNA Sequence Analysis Long-term-stored Plant Leaf Fragments Forensic Discrimination Identification
2010/9/15
This study examined the potential utility of DNA sequence analysis to discriminate and identify plant material in forensic investigations. DNA was extracted from plant leaf fragments of 11 species sto...
不同贮存温度蜂花粉的可见-近红外光谱鉴别（Application of Visible/Near Infrared Spectroscopy for Discrimination of Bee Pollen under Different Storage Temperature）
可见-近红外光谱技术 蜂花粉 贮存温度
2009/11/3
利用可见-近红外光谱技术结合最小二乘支持向量机（LS-SVM）对不同贮存温度下的蜂花粉进行鉴别。选择-20、4、15、25和40℃ 5个温度下分别贮存60d后的蜂花粉为研究对象。对原始光谱数据进行平滑和附加散射校正（MSC）的预处理后进行主成分分析，选择4～20个主成分作为输入变量进行LS-SVM建模。模型预测参数比较结果显示，当主成分数取20时模型的预测效果最好，预测相关系数r2p≥0.9919...