Zoekresultaten - 14 results

Spectroscopic approaches for conformity analysis of e-liquids

squares-discriminant analysis (PLS- DA) and soft independent modelling by class analogy (SIMCA), was used to classify samples according to the presence of nicotine and/or the targeted additives. The results allowed to ...

Use of near infrared spectroscopy and chemometrics for the classification of different Cannabis spp. samples found in Belgium

analysis (PCA) is applied as exploratory data analysis. Soft independent modelling of class analogy (SIMCA) was used to build a binary classification model according to the Belgian legislation. All ...

Identification of coffee leaves using FT-NIR spectroscopy and SIMCA.

Braekeleer, Kris Source: Talanta, Volume 177 (2018) Keywords: Chemometrics Coffee leaves Fingerprints FT-NIRS SIMCA Abstract: Abundant literature has been devoted to coffee beans (green or roasted) chemical ...

Chemometrics and chromatographic fingerprints to classify plant food supplements according to the content of regulated plants.

using SIMCA and PLS- DA. For each model, misclassification rates for the external test set of maximum one sample could be obtained. The models were applied to five real samples resulting in the ...

Detection of regulated herbs and plants in plant food supplements and traditional medicines using infrared spectroscopy.

IR data, using SIMCA as modelling technique. During validation of the model, using an external test set, 21 of 25 were correctly classified and six of the nine targeted plants showed no ...

Chromatographic impurity fingerprinting of genuine and counterfeit Cialis® as a means to compare the discriminating ability of PDA and MS detection.

supervised Partial Least Squares and its discriminant variant (PLS, PLS- DA) as well the classification methods including Soft Independent Modelling of Class Analogy (SIMCA) and the k Nearest Neighbour ...

Detection and risk evaluation of counterfeit medicines based on physico-chemical properties: the fingerprint and chemometrics approach

tablets in an intact blister. A perfect discrimination between genuine and counterfeit medicines can be obtained by SIMCA and PLS- DA without the need to remove the tablets from the blister, thereby keeping ...

Testing of complementarity of PDA and MS detectors using chromatographic fingerprinting of genuine and counterfeit samples containing sildenafil citrate.

discrimination was obtained. When only using data measured at 254 nm, good classification models can be obtained by k nearest neighbors (kNN) and soft independent modelling of class analogy (SIMCA), which might be ...

ATR-FTIR spectroscopy and chemometrics: An interesting tool to discriminate and characterize counterfeit medicines.

Regression Trees (CART) and Soft Independent Modelling of Class Analogy (SIMCA). First it was verified whether the mentioned techniques are capable to distinguish samples containing different active ...

Headspace-gas chromatographic fingerprints to discriminate and classify counterfeit medicines.

genuine and counterfeit drugs, and SIMCA generated the best predictive models. This technique not only resulted in a 100% correct classification rate for the discrimination between genuine and counterfeit ...

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