39 documents found, page 1 of 4
Amyloid Storm: An Uncommon Case of AA Amyloid Nephropathy
Domingos, Diogo; Laranjinha, Ivo; Theias Manso, Rita; Matias, Patrícia; Gonçalves, MargaridaAA amyloidosis is a rare disease caused by tissue accumulation of serum amyloid A (SAA), a protein produced in the liverin response to chronic inflammation or infection. Kidney manifestations of AA amyloidosis usually develop gradually.The authors report a case of a 77‑year‑old patient with a previous diagnosis of multifactorial chronic kidney disease andbronchiectasis, who developed sudden onset nephrotic sy...
Pine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Car...
Şen, Ali Umut; Rodrigues, João F.G.; Almeida, Daiana; Fernandes, Ângela; Gonçalves, Margarida; Martins, Marta; Santos, Diogo M.F.; Pereira, HelenaPine nutshells (PNSs) are lignocellulosic waste materials with limited use in domestic heating. However, a biorefinery approach may be applied to fractionate PNSs and produce chemicals, materials, and improved solid fuels. In this study, we fractionated PNSs and produced antioxidant extracts, lignins, polysaccharides, chars, and activated carbons and analyzed their potential applications. Pyrolytic kinetic mode...
Polydimethylsiloxane surface modification of microfluidic devices for blood pla...
Gonçalves, Margarida; Gonçalves, Inês Maia; Borges, Joel; Faustino, Vera Luísa Carreira; Soares, Delfim; Vaz, Filipe; Minas, GraçaOver the last decade, researchers have developed a variety of new analytical and clinical diagnostic devices. These devices are predominantly based on microfluidic technologies, where biological samples can be processed and manipulated for the collection and detection of important biomolecules. Polydimethylsiloxane (PDMS) is the most commonly used material in the fabrication of these microfluidic devices. Howev...
Effect of Bark Biochars on Properties of Steam-Activated Carbons
Şen, Umut; Nobre, Catarina; Martins, Marta; Gonçalves, Margarida; Pereira, HelenaBark is a heterogeneous solid material comprising mainly of phloem and cork fractions. These fractions differ in chemical composition and anatomical structure, and value-added activated carbons produced from these fractions have different surface properties. Low-temperature pyrolysis was shown to be a promising method for producing activated carbon precursors from bark fractions at higher yields than convention...
Pine Nutshells and Their Biochars as Sources of Chemicals, Fuels, Activated Car...
Sen, Umut; Rodrigues, João F. G.; Almeida, Daiana; Fernandes, Ângela; Gonçalves, Margarida; Martins, Marta; Santos, Diogo M. F.; Pereira, HelenaPine nutshells (PNSs) are lignocellulosic waste materials with limited use in domestic heating. However, a biorefinery approach may be applied to fractionate PNSs and produce chemicals, materials, and improved solid fuels. In this study, we fractionated PNSs and produced antioxidant extracts, lignins, polysaccharides, chars, and activated carbons and analyzed their potential applica- tions. Pyrolytic kinetic mo...
Chemical composition, morphology, antioxidant, and fuel properties of pine nut ...
Sen, Ali Umut; Correia, Ricardo; Longo, Andrei; Nobre, Catarina; Alves, Octávio; Santos, Margarida; Gonçalves, Margarida; Miranda, IsabelPine nut shells are waste lignocellulosic residues from the production of edible pine nut kernels that are generally only used for energy production by combustion. Lignocellulosic feedstocks, such as pine nut shells, may be valorized namely by their integration into biorefinery schemes. This article set out to analyze the chemical composition, morphology, antioxidant, and fuel properties of pine nut shells from...
Medication Management in Daycare Centers and Preschools: a manual construction
Costa-Veiga, Ana; Gonçalves, Margarida; Duarte, Marta; Luz, RitaBackground: Medication management is the process from selecting the medication to its administration and monitoring, including steps such as storage. This process, applied to the context of daycare centers and preschools, has the main objective of ensuring the administration of the correct medicine to the correct child, at the correct dose, time and route of administration, as well as ensuring good storage cond...
Gestão da medicação em creches e pré-escolar: a construção de manual
Costa-Veiga, Ana; Gonçalves, Margarida; Duarte, Marta; Luz, RitaEnquadramento: A gestão da medicação é o processo desde a seleção do medicamento à sua administração e monitorização, incluindo etapas como o armazenamento. Este processo, aplicado ao contexto de creches e pré-escolar, tem como objetivo principal garantir a administração do medicamento correto à criança correta, na dose, hora e pela via de administração corretas, bem como assegurar boas condições de armazenamen...
Turpentine as an additive for diesel engines: experimental study on pollutant e...
Chivu, Robert Mădălin; Martins, Jorge; Popescu, Florin; Uzuneanu, Krisztina; Ion, Ion V.; Gonçalves, Margarida; Codau, Teodor Cezar; Onofrei, ElenaThe need for reducing fossil fuel consumption and greenhouse gas (GHG) emissions in internal combustion engines has raised the opportunity for the use of renewable energy sources. For the progressive replacement of fossil fuels like diesel, those derived from the sustainable management of forest resources may be a good option. In Portugal, pine trees (pinus pinaster) are among the most widely cultivated tree sp...
Influence of temperature in the thermo-chemical decomposition of below-stoichio...
Castro, Carlos Eduardo Rodrigues; Gonçalves, Margarida; Longo, Andrei; Vilarinho, Cândida; Ferreira, Manuel; Ribeiro, André; Pacheco, NunoDue to the energy crisis that some countries are facing nowadays, the gasification process appears to be a good alternative to produce some energy from solid materials. Increasingly, gasification involves using wastes as a solid fuel, making the process green and reusing some materials that otherwise could end up in a landfill. However, the process of finding the best gasification parameters of a sample can be ...