نتایج جستجو برای: chemometric classification

تعداد نتایج: 494131  

Journal: :Foods 2023

Apple cultivars exhibit significant diversity in fruit quality traits, creating distinct consumption scenarios. This study aimed to assess the physicochemical parameters and sensory attributes differences among fifteen apple identify characteristic qualities suitable for various processed products using chemometric analysis. Relatively large were registered between deflection, peel color, titra...

Journal: :Chemometrics and Intelligent Laboratory Systems 2021

Infrared spectroscopy hampered by physical distortions from scattering and instrumental effects. Therefore, it is generally accepted that spectra should be pre-processed before further data analysis. Deep learning community offers augmentation techniques as an alternative approach to deal with variability in the data. In this paper we propose Extended Multiplicative Signal Augmentation (EMSA) m...

Meat, as an important source of protein, is one of the main parts of many people’s diet. Due toeconomic interests and thereupon adulteration, there are special concerns on its accurate labeling.In this study Fourier transform infrared (ATR-FTIR) spectroscopy combined with chemometrictechniques (principal component analysis (PCA), artificial neural networks (ANNs), and partial<...

Journal: :Construction and Building Materials 2021

The feasibility of a portable NIR sensor for off-line determination diverse wood quality aspects relevant in the production glue-laminated timber was demonstrated. best performance noticed assessing moisture content, with lower capacity to estimate density and mechanical properties. spectroscopy modestly capable predicting surface roughness. However, traceability raw resources automatic classif...

Background and Objectives: Kebab loghmeh is one of the most popular meat products in Iran. Quantitative assessment of the red meats is critical as the most important factor in authentication of this meat product. Other methods of adulteration tracing do not include enough efficiency to quantitatively assess quantities of the red meats in final products. Therefore, the objective of the current s...

Journal: :Talanta 2012
E Deconinck P Y Sacré P Courselle J O De Beer

Chromatographic fingerprints recorded for a set of genuine and counterfeit samples of Viagra(®) and Cialis(®) were evaluated for their use in the detection and classification of counterfeit samples of these groups of medicines. Therefore several exploratory chemometric techniques were applied to reveal structures in the data sets as well as differences among the samples. The focus was on the di...

Journal: :Analytical chemistry 2012
Xiaobo Sun Pei Chen Shannon L Cook Glen P Jackson James M Harnly Peter B Harrington

Panax quinquefolius L ( P. quinquefolius L) samples grown in the United States and China were analyzed with high performance liquid chromatography-mass spectrometry (HPLC-MS). Prior to classification, the two-way data sets were subjected to pretreatment including baseline correction and retention time (RT) alignment. Principal component analysis (PCA) and projected difference resolution (PDR)...

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