Nanoparticles (11) Oxidative stress (11) exposition (10) Human beings (8) Lungs (6) Evaluation (6) Tax assessment (5) soudage (4) particule (4) Welding (4) Particles (4) Welding (4) Particles (4) roman (4) espèce (3) hygiène du travail (3) analyse (3) santé (3) gaz (3) fumée (3) biomarqueur (3) Tungsten (3) Species (3) Industries (3) Health (3) Gas (3) Dust (3) Active oxygen (3) Analysis (3) Size (3)