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least-square analysis

Résultats de la recherche - 12 results

An infrared spectroscopic approach to characterise white powders, easily applicable in the context of drug checking, drug prevention and on-site analysis

using spectroscopic techniques hyphenated with partial least squares (PLS) modelling. For identification purposes, it was observed that mid-infrared spectroscopy hyphenated with PLS-discriminant analysis allowed the ...

Clustering and diagnostic modelling of slimming aids based on chromatographic and mass spectrometric fingerprints

(2017) Keywords: Anti-Obesity Agents Chromatography, High Pressure Liquid Cluster Analysis Discriminant Analysis Least-Squares Analysis Mass Spectrometry Principal Component Analysis Abstract: Herbal ...

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 ...

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

several genuines and generics are classified as counterfeits and vice versa. However, when analyzing the MS1_MS2 data in combination with partial least squares-discriminant analysis (PLS- DA), a perfect ...

Detection of sibutramine in adulterated dietary supplements using attenuated total reflectance-infrared spectroscopy.

(2014) Keywords: Appetite Depressants Cyclobutanes Decision Trees Dietary Supplements Drug Contamination False Positive Reactions Least-Squares Analysis Principal Component Analysis Reproducibility of ...

Chemometrics and chromatographic fingerprints to discriminate and classify counterfeit medicines containing PDE-5 inhibitors.

Analysis Counterfeit Drugs Informatics Least-Squares Analysis Phosphodiesterase 5 Inhibitors Principal Component Analysis Support Vector Machine Abstract: Chromatographic fingerprints recorded for a set of ...

Neonatal thyroid-stimulating hormone concentrations in Belgium: a useful indicator for detecting mild iodine deficiency?

Moreno-Reyes, Rodrigo Source: PLoS One, Volume 7, Issue 10, p.e47770 (2012) Keywords: Belgium Congenital Hypothyroidism Female Humans Infant, Newborn Least-Squares Analysis Pregnancy Seasons thyrotropin Abstract: ...

Impurity fingerprints for the identification of counterfeit medicines--a feasibility study.

Feasibility Studies Least-Squares Analysis Piperazines Principal Component Analysis Purines Sildenafil Citrate Spectrophotometry, Ultraviolet Sulfones Tablets Tadalafil Abstract: Most of the counterfeit ...

Comparison and combination of spectroscopic techniques for the detection of counterfeit medicines.

Beer, Jacques Source: J Pharm Biomed Anal, Volume 53, Issue 3, p.445-53 (2010) Keywords: Carbolines Least-Squares Analysis Phosphodiesterase Inhibitors Piperazines Principal Component Analysis Purines ...

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