The influence of welding arc regime on the fumes formation is studied by numerical modeling via description separate processes inside space charge regions near electrodes in with consumable electrode. comprises calculation temperature profiles for electrons and heavy component, distribution gas components’ number densities, particles’ mean free pathes, electric potential field, heat transfer fr...

In order to evaluate the relationship between the concentration of welding fumes and cigarette smoke on the bronchopulmonary system function, a comparative study of spirometric measurements in 100 welders and 50 healthy volunteers was performed in an automobile manufacturing company. Two groups of workers were matched according to their age, height, smoking habit, years of service and soci...

AIMS To investigate the acute systemic inflammatory response to welding fume exposure. METHODS Twenty four welders (42% smokers) and 13 non-exposed controls (23% smokers) were monitored at a welding school. Exposure to fine particulate matter (PM2.5) was assessed using cyclone samplers. Markers of systemic inflammation, including C-reactive protein (CRP), fibrinogen, and white blood cell (WBC...

The cause of Parkinson disease (PD) remains unknown. Progress has been made on the genetic front with the identification of specific gene mutations (e.g., -synuclein) associated with familial Parkinson syndromes. Because of their clinical heterogeneity there remains debate as to whether these genetic syndromes are representative of what has been considered classical PD. The identification of mu...

Lung toxicity of chromium fumes (Cr fumes) was examined by a single intratracheal instillation into rats of 10.6 mg and 21.3 mg Cr fumes/kg body weight and by repeated (3 times) instillations of 10.8 mg and 21.7 mg Cr fumes/kg. The pathological changes were compared with those induced by single administrations of 3.2 mg and 19.2 mg Na2CO3 solution-insoluble fraction of Cr fumes (Cr-Fr)/kg and 2...