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Zoekresultaten - 70 results
Chromatographic fingerprint development for the detection of tobacco varieties in commercial tobacco products
further optimization of chemometrics and mass spectrometry, the method has potential for application to commercial tobacco products. Health Topics: Effectiveness and safety of vaccines, medicines and ...
Screening of plant food supplements for fraud concerning the presence of medicinal or regulated plants based on multi-dimensional chromatographic fingerprints
in herbal preparations. During the project an approach was developed based on chromatographic fingerprinting, mass spectrometry and chemometrics to detect four regulated plants with slimming ...
Evaluating MIR and NIR Spectroscopy Coupled with Multivariate Analysis for Detection and Quantification of Additives in Tobacco Products.
chromatography-mass spectrometry (GC- MS), liquid chromatography-mass spectrometry (LC- MS), and others, although effective, suffer from drawbacks, including complex sample preparation, high costs, lengthy analysis ...
Illegal medicines observed in the EU
the API, the presence of the wrong API or designer molecules, the presence of impurities, unknown ingredients or microbial contamination, fake packaging, non-uniformity of mass or content as well as ...
Potential determinants of the decline in mpox cases in Belgium: A behavioral, epidemiological and seroprevalence study.
HIV-PrEP users across four-time points in 2022. RESULTS: Mpox patients diagnosed at the end of the epidemic had less sexual risk behavior compared to those diagnosed earlier: they engaged less in sex at mass ...
Characterization of functional nanoparticles applied in face masks by STEM-EDX
assisted optical emission spectroscopy or mass spectroscopy and selected for subsequent STEM analysis. The mask was disassembled and a piece of 1 mm x 5 mm was cut from the selected layer. The preparation of ...
The use of nitrous oxide whippets as a recreational drug: Hidden health risks.
containing metallic particles. This contamination was investigated using liquid chromatography-, gas chromatography- and inductively coupled plasma-mass spectrometry (ICP- MS) and optical emission spectrometry ...
Full Characterisation of Heroin Samples Using Infrared Spectroscopy and Multivariate Calibration
100.0, 75.0 and 95.5%, respectively. For regression, a root mean squared error of prediction (RMSEP) of 0.04 was obtained, pointing at good predictive properties. Furthermore, during mass spectrometric ...
Factors influencing SARS-CoV-2 infection rate in Belgian nursing homes’ residents during the first wave of COVID-19 pandemic
(2022) Keywords: COVID-19 long-term care facilities Abstract: In April 2020, Belgium experienced high numbers of fatal COVID-19 cases among nursing home (NH) residents. In response, a mass testing campaign ...
The analysis of cannabinoids in e-cigarette liquids using LC-HRAM-MS and LC-UV.
Cannabinoids cannabis Chromatography, Liquid Dronabinol Electronic Nicotine Delivery Systems Mass Spectrometry Abstract: The use of cannabidiol or CBD products has skyrocketed in the last five years due to the ...