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Résultats de la recherche - 471 results
THE ANALYSIS OF ILLICIT DRUGS COLLECTED DURING A SUMMER FESTIVAL AND EVALUATION OF THE NARCOREADER FOR ON-SITE ANALYSIS OF MDMA
samples are analysed with four alternative techniques. The pros and cons are compared of these alternative methods for on-site use by non-experts. Methods: The samples are identified with GC- MS and ...
COMBINATION OF CHEMOMETRICS AND MULTIDIMENSIONAL FINGERPRINTING FOR DETECTION OF REGULATED PLANTS IN PLANT FOOD SUPPLEMENTS
corrected for time shifts using correlation optimized warping and further pretreated using classical techniques like signal noise variate, autoscaling and derivatives), before being subjected to partial least ...
Spectroscopic approaches for conformity analysis of e-liquids
modelling. Next to baseline correction, classical preprocessing techniques like standard normal variate (SNV), derivatives and scaling were explored. In a first step, supervised modelling, using partial least ...
Rational arguments for regulatory acceptance of consistency testing: benefits of non-animal testing over release testing of vaccines.
techniques to measure critical quality attributes. However, introduction of in vitro alternatives to replace in vivo release assays of authorized vaccines is challenging. AREAS COVERED: This report describes ...
Using random-forest multiple imputation to address bias of self-reported anthropometric measures, hypertension and hypercholesterolemia in the Belgian health interview survey
compared with multiple imputation by chained equations based on parametric and non-parametric techniques. RESULTS: This study confirmed the underestimation of risk factor prevalence based on self-reported ...
Challenges in Drug Surveillance: Strengthening the Analysis of New Psychoactive Substances by Harmonizing Drug Checking Services in Proficiency Testing.
towards drug checking services, proficiency testing was set up to evaluate existing analytical techniques and investigate the capability to correctly identify circulating NPS. Twenty blind substances, ...
Assessment of the clinical and analytical performance of the Aptima SARS-CoV-2 assay using the VALCOR protocol.
Arbyn Source: Virol J, Volume 20, Issue 1 (2023) Keywords: Clinical Laboratory Techniques COVID-19 COVID-19 Testing Humans Molecular Diagnostic Techniques Pandemics SARS-CoV-2 Sensitivity and Specificity ...
Comparison of 6 DNA extraction methods for isolation of high yield of high molecular weight DNA suitable for shotgun metagenomics Nanopore sequencing to detect bacteriaAbstractBackgroundResultsConclusion
evaluated the performances of 6 DNA extraction methods using various cells lysis and purification techniques, from quick and easy, to more time-consuming and gentle protocols, including a portable method for ...
Clustering of Tadalafil API Samples According to their Manufacturer in the Context of API Falsification Detection
solvent and 1 H- NMR data. Future suspicious samples in the network will therefore be analysed with these techniques in order to attribute the sample to one of the manufacturers. If the sample cannot be ...
Regulatory safety assessment of nanoparticles for the food chain in Europe
that may retain properties at the nanoscale. Key parameters and threshold values for establishing the presence of small particles, the techniques and methods for characterisation in complex matrices, as ...