Browsing by Author "Miranda, Rosa"
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- Application of a control banding tool for risk level assessment and control of nanoparticles exposure in welding operationsPublication . Gomes, João; Pereira, Catarina; Albuquerque, Paula; Miranda, RosaScope of study: welding operations result in harmful emissions of nanoparticles; the aim of emissions monitorisation is to evaluate exposure levels and to derive protection measures in order to protect exposed workers; however, the traditional approach of comparing measured concentrations with exposure limits cannot be used; but risk levels can be quantified by using Control Banding Strategies.
- Occupational exposure to nanoparticles in the ceramic industryPublication . Esteves, Helder; Gomes, João; Miranda, Rosa; Albuquerque, PaulaSome studies on occupational exposure to particulates have pointed out to dangerous effects for workers about inhalable and respirable particles. These scenarios of occupational exposure are extremely complex since they involve components inherent to individuals, working conditions and the activity itself. Regarding the ceramic industry, workers may be exposed to nanomaterials throughout the production process because of their unintentional release. Taking into account these considerations we have been conducting a study evaluating the professional exposure to nanoparticles in several jobs in different plants of the Portuguese ceramic industry, within European Project CERASAFE (SIINN/0002/2014). This study aims to characterize and evaluate the occupational exposure of workers to nanoparticles in different types of ceramic industries, namely identify exposure scenarios in the workplace and characterize the exposure for the manufacture of ceramic nanomaterials; identify relevant nanomaterials and assess their toxicity and contribute to increase knowledge about the health effects of exposure of workers to nanoparticles in the ceramics industry.
- Professional exposure to nanoparticles in the manufacture of parts by laser weldingPublication . Esteves, Helder; Gomes, João; Miranda, Rosa; Albuquerque, PaulaSome studies on occupational exposure to particulates have pointed out to dangerous effects for workers as regards inhalable and respirable particles. These scenarios of occupational exposure are extremely complex since they involve components inherent to individuals, working conditions and the activity itself. The influence of welding fumes on the human body has different effects depending on the composition of these fumes. Some of these compositions have short-term effects, such as the so-called welding fever. However, welding fumes may cause long-term effects, in particular: skin irritation, respiratory tract irritation, kidney and liver damage, dermatological effects, asthmatic-type lung diseases; chronic effects including cancer (nose, larynx, lung). Taking these considerations into account, we have conducted a study evaluating the professional exposure to nanoparticles in the production of parts by laser addition. This study aims to characterize and evaluate the occupational exposure of workers to nanoparticles in this industry, namely: identify scenarios of exposure in the workplace and characterize the exposure in the manufacturing of the parts; identify relevant nanomaterials and assess their toxicity; contribute to increase knowledge about the health effects of workers' exposure to nanoparticles in this industry typology.