Résultats de la recherche - 34 results
A validation methodology for size and shape measurement of nanoplastics by transmission electron microscopy
uncertainty balance, we aim to determine the accuracy, precision and reliability of NP size and shape characterization by TEM. The method is validated supporting on the Nanosphere size standards 3060A (60 ...
Using random-forest multiple imputation to address bias of self-reported anthropometric measures, hypertension and hypercholesterolemia in the Belgian health interview survey
Belgian health interview survey (BHIS) older than 18 years, of which 1184 participated in the 2018 Belgian health examination survey (BELHES), were included in the analysis. Regression calibration was ...
Towards standardisation of automatic pollen and fungal spore monitoring: best practises and guidelines
Standards for manual pollen and fungal spore monitoring have been established based on several decades of experience, tests, and research. New technological and methodological advancements have led to the ...
Relative response factors and multiple regression models in liquid chromatography to quantify low-dosed components using alternative standards-proof of concept: total Δ9-THC content in cannabis flowers using CBD as reference.
a one-point calibration or a calibration line, prepared using a reference standard of the compound(s) of interest. However, in some cases, adequate reference standards may be very expensive, rare to obtain, or ...
VALCOR: a protocol for the validation of SARS-corona virus-2 assays.
tract obtained from COVID-19 patients and healthy carriers of SARS-CoV-2 as well as specimens from subjects not carrying SARS-CoV-2. Artificial specimens include calibrated amounts of viral RNA of ...
VALCOR: a protocol for the validation of SARS-corona virus-2 assays
subjects not carrying SARS-CoV-2. Artificial specimens include calibrated amounts of viral RNA of SARS-CoV-2 sequences provided by established competent agencies that produce reference materials for the ...
Selection and use of reference panels: a case study highlighting current gaps in the materials available for foot and mouth disease.
Reference Laboratories already provide approved international standard reagents to help calibrate diagnostic tests for a range of diseases, but there remain important gaps in their availability for ...
Selection and use of reference panels: a case study highlighting current gaps in the materials available for foot and mouth disease
sometimes competing) diagnostic technologies. World Organisation for Animal Health Reference Laboratories already provide approved international standard reagents to help calibrate diagnostic tests for ...
DETERMINATION OF SENSITIZING AND IRRITATING LEACHABLES IN MENSTRUAL HYGIENE PRODUCTS
time of 12 minutes was developed and optimized for both identification and quantification of the leachables. Matrix effects were corrected by using matrix-matched calibration and methyl cinnamate was ...
DETERMINATION OF ALLERGENIC FRAGRANCE INGREDIENTS IN FEMININE ABSORBENT HYGIENE PRODUCTS AND LUBRICANTS
matrix-effect in AHP s was reduced with the use of 1-fluoronapthalene as an internal standard (IS) and matrix-matched calibration for quantification purposes. A relative bias was set at 15%, that was met by each ...