Zoekresultaten - 11 results

Residential green space and medication sales for childhood asthma: A longitudinal ecological study in Belgium

= 1872) by sex and age group (6–12 and 13–18 years). Generalized log-linear mixed effects models with repeated measures were used to estimate effects of relative covers of forest, grassland and garden in ...

Opinion: Airtightness for Decontamination by Fumigation of High-Containment Laboratories

airtightness. Starting from a previous study in which we measured the airtightness in 4 BSL-3 laboratories with blower-door tests, we discuss the connection between airtightness and a successful decontamination ...

Evaluation of a TEM based Approach for Size Measurement of Particulate (Nano)materials

particulate material Abstract: An approach for the size measurement of particulate (nano)materials by transmission electron microscopy was evaluated. The approach combines standard operating procedures for ...

Isolation and characterization of the compounds responsible for the antimutagenic activity of Combretum microphyllum (Combretaceae) leaf extracts

the quantitative 2,2 diphenyl-1-picryhydrazyl (DPPH)-free radical scavenging method. Only arjunolic acid had pronounced antioxidant activity (measured as DPPH-free scavenging activity) with an EC50 ...

Size measurement uncertainties of near-monodisperse, near-spherical nanoparticles using transmission electron microscopy and particle-tracking analysis

(2014) Keywords: Transmission electron microscopy Particle-tracking analysis Colloidal gold Polystyrene beads Method validation Measurement uncertainty Nanometrology Health Topics:  Health and environment ...

Semi-automatic size measurement of primary particles in aggregated nanomaterials by transmission electron microscopy

Publication Type: Peer reviewed scientific article Authors: Pieter-Jan De Temmerman; Eveline Verleysen; Lammertyn, Jeroen; Jan Mast Source: Powder Technology, Volume 261 (2014) Keywords: Transmission electron microscopy Image analysis Aggregate Nanomateri ...

Measurement uncertainties of size, shape, and surface measurements using transmission electron microscopy of near-monodisperse, near-spherical nanoparticles

nanoparticles Measurement uncertainty Nanometrology Health Topics:  Health and environment Santé et environnement Gezondheid en milieu Service:  Éléments traces et nanomatériaux Spoorelementen en nanomaterialen ...

Scientific opinion on the risk for public health related to the presence of mercury and methylmercury in food

Europe European European Commission exposure food Food Additives Hair health Increase INFORMATION Inhalation Exposure intake IS LEVEL levels measure measures mercury NUTRITION observed ON outcome outcomes ...

Mutagenicity, antimutagenicity and cytotoxicity evaluation of South African Podocarpus species

of toxicity, as was observed from these extracts. These findings will help in assessing the safety measures to be considered in the use of these species and also the need to determine the cytotoxic ...

Determination of the volume-specific surface area by using transmission electron tomography for characterization and definition of nanomaterials.

feasibility to visualize and measure silica and gold NM in suspension using conventional bright field electron tomography. RESULTS: The general morphology of gold and silica NM was visualized in 3D by ...

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