Zoekresultaten - 128 results
Method development for analysis of nanoplastics in drinking water and milk using transmission electron microscopy (TEM)
expanded measurement uncertainties for median size and shape measuments of pristine NP s ranged from 2.5 — 7.5 % and 3.0 — 8.9 %, respectively, setting a reliable baseline for further studies. As a next ...
Assessing particle count in electron microscopy measurements of nanomaterials to support regulatory guidance
electron microscopy nanomaterial Particle count Particle shape Particle Size Precision Regulatory guidance uncertainty Abstract: In the European Union, nanomaterials are regulated through different pieces of ...
Residential greenness and pollen exposure across gestational trimesters in relation to preschool wheezing: Results for the PIPO birth cohort
greenness in the 1st trimester, grass pollen in the 2nd trimester, and birch pollen in the 1st and 3rd trimester. Mediation analysis showed large uncertainty. Discussion: Surrounding greenness and pollen ...
COVID-19 mortality statistics: a comparative study of epidemiological surveillance data and death certificates in 2020 in Belgium
deaths in COD were identified in SURV. Reduced COVID-19 activity and diagnostic uncertainty resulted in lower agreement between databases. Variations in data quality were observed across epidemic waves, ...
Susceptibility of Mammals to Highly Pathogenic Avian Influenza: A Qualitative Risk Assessment From the Belgian Perspective.
to have frequent direct or indirect close contacts with infected (dead) birds, such as wild felids, wild mustelids, foxes and wild marine carnivore mammals. For some mammal species, the uncertainty ...
Determination of 16 Hydroxyanthracene Derivatives in Food Supplements Using LC-MS/MS: Method Development and Application.
within-laboratory reproducibility was from 3.4% to 16.3%. The expanded measurement uncertainty was below 50% for all HAD s. Subsequently, 24 commercial samples of food supplements and herbal infusions sourced in ...
The performance of a point-of-care test for the diagnosis of Neurocysticercosis in a resource-poor community setting in Zambia- a diagnostic accuracy study.
POC CC + and 82 TS POC CC- participants with cerebral CT examination, 35 TS POC CC + and 10 TS POC CC-, respectively, had NCC. The sensitivity of the TS POC CC strip was 26% (uncertainty interval ...
A validation methodology for size and shape measurement of nanoplastics by transmission electron microscopy
Copenhagen, Denmark (2024) Keywords: Metrology nanoplastics TEM uncertainty Validation study Abstract: The spread of plastics in the environment has led to the formation of microplastics (MP s) and even smaller ...
Lifestyle predictors of colorectal cancer in European populations: a systematic review
validated in an adult asymptomatic European population, (2) based on non-invasively measured predictors and (3) reported mean estimates and uncertainty for predictors included. To facilitate comparison, ...
Estimating the Uncertainty in Airborne Birch Pollen Modelling
model (System for Integrated modeLling of Atmospheric composition). The key question, however, is which uncertainty can be expected when modelling and forecasting airborne pollen levels? Materials & ...