Browsing by Author "Santos, M."
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- Polyester-based photocrosslinkable bioadhesives for wound closure and tissue regeneration supportPublication . Santos, M.; Cernadas, T.; Martins, P.; P. Miguel, Sónia; Correia, I.J.; Alves, P.; Ferreira, P.Photocrosslinkable surgical adhesives provide many advantages when compared with traditional methods used in wound closure. This work aimed to develop UV-curable biodegradable adhesives based on lactic acid and PCL oligomers. Both materials were functionalized with 2-isocyanatoethyl acrylate (AOI). Subsequently, the photoinitiator (Irgacure® 2959) was added to the blend and then, the final materials were irradiated under UV light for two different times: 30 s and 2 min. After production of adhesives, its physicochemical properties were evaluated through FTIR-ATR and TGA, as well as its rheology, dynamic water contact angle, swelling capacity and hydrolytic degradation. Furthermore, the biocompatibility of the produced adhesives was also characterized in contact with human dermal fibroblasts cells. The antimicrobial activity of the materials was assessed by using Staphylococcus aureus and Escherichia coli, as bacterial models.
- Safety and Health at Work - Assessment tool: Dairy ProductsPublication . Andrade, Luís P.; Nunes, J.; Paiva, Teresa; Gândara, J.; Pinheiro, R.; Gaspar, Pedro Dinis; Elias, M.; Pereira, C.D.; Soares, C.; Henriques, M.; Laranjo, Marta; Potes, Maria Eduarda; Santos, Ana Cristina Agulheiro; Santos, Fernando Charrua; Silva, P.D; Coutinho, P.; Carneiro, J.; Várzea, J.P.; Velho, Manuela Vaz; Araújo, M.A.; Ribeiro, M.; Santos, M.; Matias, JoãoThis manual aims to assist the Work Health and Safety Assessment Tool – Dairy Products user, in carrying out a simplified and easy-to-use occupational risk assessment with a view to adopting risk control solutions at workplaces. The design of this tool trie to provide an instrument capable of being used without internet access or specific software installation. In addition to its main purpose, this tool can also be used for workers consultation or training actions, provided as a complement of the other instruments developed within the scope of this project. The tool is organized in three distinct parts (see Figure 1): the first, where a checklist is filled out, from which a graphical overview is obtained, which will give the overview of the level of risk control (second part). This synthesis of results allows the user to immediately visualize the level of control of the main risks and in which will have to make major interventions. Finally, the third part appears, where a report is generated with solutions, particularized for each one of the risks in which the adoption of measures proves necessary.