26 documents found, page 1 of 3
Dual-loaded chitosan-based nanoparticles: a novel approach for treating polymic...
Zegre, Miguel; Barros, J.; David, A. B.; Fialho, L.; Ferraz, M. P.; Monteiro, F. J.; Caetano, Liliana Aranha; Gonçalves, L.; Bettencourt, A.Developing innovative approaches to target osteomyelitis caused by polymicrobial infections remains a significant therapeutic challenge. In this study, monodispersed chitosan nanoparticles co-loaded with antibacterial (minocycline) and antifungal (voriconazole) agents were successfully prepared. Minocycline presented higher encapsulation efficiency as compared to voriconazole. Thermostability analysis suggested...
Assessment of the impact of utility-scale photovoltaics on the surrounding envi...
Muñoz-Garcia, M.A.; Fialho, L.; Moreda, G.P.; Baptista, F.J.The rapid growth of photovoltaic solar energy, to achieve decarbonization, has been accompanied by increasing land occupation and the subsequent concern in the agroforestry sector. The increase in land area occupied has been of 20% in recent years, boosting solar electricity production to 5.9% of the total in Europe. This fact raises the question of the impact on vegetation greenness and moisture in the rural e...
Silages of agro-industrial by-products in lamb diets : effct on growth performa...
Dentinho, M. T. P.; Paulos, K.; Costa, C.; Costa, J.; Fialho, L.; Cachucho, L.; Portugal, A. P.ABSTRACT - The use of agro-industrial by-products in animal feed is an opportunity to reduce imports, food waste and promote a clean and circular economy, turning worthless raw materials into high -quality and low-cost animal feeds, which does not compete with human food. This study aims to produce silages with by-products of carrot, sweet potato, potato, and tomato pomace and integrate them in lamb diets, repl...
Ageing of two 5kW PV arrays at the IES-UPM after 8 years of operation
Martínez-Moreno, F.; Rossa, C.; Merodio, P.; Fialho, L.; Tuytyundzhiev, N.This work analyses the degradation of two 5 kW PV arrays which are located on the roof of the Campus Sur of the Universidad Politécnica de Madrid. These systems were installed in March 2013 and they have been continuously monitored while they have been injecting power into the grid, storing at the same time its DC power and the operation conditions (effective irradiance and cell temperature). These variables al...
Development and validation of a repairing procedure for PV modules on-site
Fialho, L.; Duarte, D.; Pires, C.; Horta, P.Os módulos fotovoltaicos podem desenvolver alguns defeitos durante a operação contínua ao longo do seu tempo de vida. Alguns desses defeitos não apresentam um risco acrescido inicial, mas podem evoluir gradualmente para uma falha perigosa, refletindo-se numa redução na produção de eletricidade, paragens imprevistas e constituir um risco pessoal ou para a instalação. Estes defeitos podem ser reparados na sua fas...
Open Science: New Challenges and Opportunities for the PV Sector
Cristobal Lopez, A.B.; del Cañizo, C.; Narvarte Fernández, L.; Martí Vega, A.; Antón Hernández, I.; Revuelta, G; Fialho, L.; Molina, M.; Schwald, R.The concept of Open Science (OS) embraces a great number of practices targeted to promote more transparent and reproducible scientific processes. This, combined with the implementation of public engagement processes from the research community, drives us to a more collaborative and accesible science, where the chance of generating systemic and disruptive innovations can grow exponentially. In this work we show ...
Desenvolvimento e validação do processo de reparação de módulos fotovoltaicos o...
Fialho, L.; Duarte, D.; Pires, C.; Horta, PedroRESUMO: Os módulos fotovoltaicos podem desenvolver alguns defeitos durante a operação contínua ao longo do seu tempo de vida. Alguns desses defeitos não apresentam um risco acrescido inicial, mas podem evoluir gradualmente para uma falha perigosa, refletindo-se numa redução na produção de eletricidade, paragens imprevistas e constituir um risco pessoal ou para a instalação. Estes defeitos podem ser reparados na...
Simulation of a-Si PV system linked to the grid by DC-DC boost and two-level co...
Fialho, L.; Melicio, R.; Mendes, V.M.F.; Rodrigues, L.; Viana, S.; Estanqueiro, A.This paper is about a PV system linked to the electric grid by power electronic converters. The modeling for the converters emulates the association of a DC-DC boost with a twolevel power inverter in order to follow the performance of a testing commercial inverter employed on an experimental system. It is used pulse width modulation by sliding mode control associated with space vector modulation for control the...
MC3T3-E1 cell response to Ti1xAgx and Ag-TiNx electrodes deposited on piezoelec...
Marques, S.; Rico, P.; Carvalho, Isabel; Ribelles, J. L. Gómez; Fialho, L.; Lanceros-Méndez, S.; Henriques, Mariana; Carvalho, S.In the sensors field, titanium based coatings are being used for the acquisition/application of electrical signals from/to piezoelectric materials. In this particular case, sensors are used to detect dynamic mechanical loads at early stages after intervention of problems associated with prostheses implantation. The aim of this work is to select an adequate electrode for sensor applications capable, in an initia...
Simulation of a-Si PV system grid connected by boost and inverter
Fialho, L.; Melício, R.; Mendes, V. M. F.; Estanqueiro, AnaThis paper is about a PV system connected to the electric grid by power electronic converters, using classical PI controller. The modelling for the converters emulates the association of a DC-DC boost with a two-level power inverter (TwLI) or three-level power inverter (ThLI) in order to follow the performance of a testing experimental system. Pulse width modulation (PWMo) by sliding mode control (SMCo) associa...