Search results for "Fine particles"

showing 2 items of 2 documents

Associations of black carbon with lung function and airway inflammation in schoolchildren

2019

Background: Few studies have investigated the 24-hour respiratory health effects of personal black carbon (BC) and ultrafine particles (UFP) exposure in schoolchildren. The objective of this study was to investigate these associations with the lung function in children 10-years old with and without persistent respiratory symptoms. Methods: We conducted a cross-sectional study in 305 children (147 and 158 with and without persistent respiratory symptoms, respectively) from three European birth-cohorts: PARIS (France) and INMA Sabadell and Valencia (Spain). Personal 24-hour measurements of exposure concentrations to BC and UFP were performed by portable devices, before lung function testing. …

MaleVital capacity010504 meteorology & atmospheric sciencesVital Capacity010501 environmental sciences[SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract01 natural sciencesLung function parameters (FVC and FEV1)Forced Expiratory VolumeRespiratory systemChildLunglcsh:Environmental sciencesLung functionGeneral Environmental Sciencelcsh:GE1-350Airway inflammationrespiratory systemRespiratory Function Tests3. Good healthChild PreschoolBreathingFemaleFrancemedicine.medical_specialtyLung function parameters (FVC and FEV(1))SchoolchildrenNitric OxideFEV1/FVC ratioBlack carbonExposure concentrationsSootInternal medicineLung function parameters (FVC and FEV1medicineHumansFeNOBronchitis0105 earth and related environmental sciencesInflammation[SDV.EE.SANT]Life Sciences [q-bio]/Ecology environment/Health[SDV.MHEP.PED]Life Sciences [q-bio]/Human health and pathology/Pediatricsbusiness.industryInfant NewbornInfantConfidence intervalrespiratory tract diseasesCross-Sectional Studies) FeNOUltrafine particlesSpainExhaled nitric oxideParticulate Matter[SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologiebusiness
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Use of supercritical CO2 and N2 as dissolved gases for the atomization of ethanol and water

2012

Supercritical dissolved gas atomization (SDGA) is an atomization process in which a gas at temperatures and pressures above the critical point is used as the atomizing medium. The concept of SDGA has been applied mainly using CO 2 as atomizing gas in various processes developed for the production of fine particles of pharmaceuticals, polymers, and chemical products and for the atomization of fuels. In this work, SDGA, using ethanol and water as the liquids to be atomized, has been experimentally studied. The spray characteristics, in terms of droplet size and distribution, have been investigated using a laser diffraction analyzer. Ethanol has been chosen due to the large miscibility with CO…

Spray characteristicsGeneral Chemical EngineeringAnalytical chemistryMiscibilityLaser diffractionIndustrial and Manufacturing EngineeringPhysics::Fluid DynamicsGas to liquidschemistry.chemical_compoundAtomizing gas Dissolved gas Droplet sizes Fine particles Gas to liquids Laser diffraction Supercritical fluids Supercritical CO2Fine particlesCritical point (thermodynamics)Gas to liquidsPhysics::Atomic and Molecular ClustersChemical Engineering (all)Physics::Atomic PhysicsDissolved gasCondensed Matter::Quantum Gaseschemistry.chemical_classificationAtomizing gasSupercritical fluidsChemistry (all)Droplet sizesGeneral ChemistryPolymerSupercritical CO2Supercritical fluidCondensed Matter::Soft Condensed MatterSolventchemistryCarbon dioxide
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