Results 1 to 10 of about 2,047,036 (332)

Dynamic Changes in Volatile Compounds of Shaken Black Tea during Its Manufacture by GC × GC–TOFMS and Multivariate Data Analysis [PDF]

open access: yesFoods, 2022
Changes in key odorants of shaken black tea (SBT) during its manufacture were determined using headspace solid-phase microextraction (HS-SPME) combined with comprehensive two-dimensional gas chromatography–time-of-flight mass spectrometry (GC × GC–TOFMS)
Jinjin Xue   +8 more
doaj   +2 more sources

Investigation of the Variability of Alkaloids in Buxus sempervirens L. Using Multivariate Data Analysis of LC/MS Profiles [PDF]

open access: yesMolecules, 2021
Buxus sempervirens L. is a common ornamental plant in southern and central Europe, and has been used ethopharmacologically against a wide variety of diseases due to it containing nor-triterpene alkaloids of the nor-cycloartane type.
Lara U. Szabó, Thomas J. Schmidt
doaj   +2 more sources

Multivariate Data Analysis and Central Composite Design-Oriented Optimization of Solid Carriers for Formulation of Curcumin-Loaded Solid SNEDDS: Dissolution and Bioavailability Assessment [PDF]

open access: yesPharmaceutics, 2022
The study was initiated with two major purposes: investigating the role of isomalt (GIQ9) as a pharmaceutical carrier for solid self-nanoemulsifying drug delivery systems (S-SNEDDSs) and improving the oral bioavailability of lipophilic curcumin (CUN ...
Leander Corrie   +13 more
doaj   +2 more sources

Topological Data Analysis for Multivariate Time Series Data

open access: yesEntropy, 2023
Over the last two decades, topological data analysis (TDA) has emerged as a very powerful data analytic approach that can deal with various data modalities of varying complexities.
Anass B. El-Yaagoubi   +2 more
doaj   +1 more source

Do international standards influence the development of smart regions and cities? [PDF]

open access: yesZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2019
The growth of city population has consequences on the sustainability and development of smart regions. International standards can provide good practices in wide areas related to environmental, security and social aspects that contribute to the
Jelena Ruso   +2 more
doaj   +1 more source

COSIMA data analysis using multivariate techniques [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2015
We describe how to use multivariate analysis of complex TOF-SIMS (time-of-flight secondary ion mass spectrometry) spectra by introducing the method of random projections.
J. Silén   +6 more
doaj   +1 more source

Data fusion and multivariate analysis for food authenticity analysis

open access: yesNature Communications, 2023
A mid-level data fusion coupled with multivariate analysis approach is applied to dual-platform mass spectrometry data sets using Rapid Evaporative Ionization Mass Spectrometry and Inductively Coupled Plasma Mass Spectrometry to determine the correct ...
Yunhe Hong   +10 more
doaj   +1 more source

The Use of Multivariate Data Analysis (HCA and PCA) to Characterize Ashes from Biomass Combustion

open access: yesEnergies, 2021
The content of heavy metals Cd, Cr, Cu, Fe, Ni, Pb and Zn in ash samples from miscanthus, oak, pine, sunflower husk, wheat straw, and willow ashes burned at 500, 600, 700, 800, 900, and 1000 °C, respectively, was determined.
Małgorzata Szczepanik   +5 more
doaj   +1 more source

An algorithm for processing mass spectrometric analysis data for initial diagnostics of diseases by exhaled gases

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2021
An algorithm for processing mass spectra of gases exhaled by patients has been proposed in the paper. The mass spectra are recorded on the MS7-200 quadrupole mass spectrometer, with electronic ionization and with direct capillary injection of the sample.
Manoilov vladimir   +4 more
doaj   +1 more source

Bayesian Semiparametric Regression Analysis of Multivariate Panel Count Data

open access: yesStats, 2022
Panel count data often occur in a long-term recurrent event study, where the exact occurrence time of the recurrent events is unknown, but only the occurrence count between any two adjacent observation time points is recorded.
Chunling Wang, Xiaoyan Lin
doaj   +1 more source

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