13 documents found, page 1 of 2
In vitro antimicrobial activity of volatile compounds from the Lichen Pseudever...
Essadki, Yasser; Hilmi, Adel; Cascajosa-Lira, Antonio; Girão, Mariana; Darrag, El Mehdi; Rosário Martins, Maria; Romane, AbderrahmaneLichens are symbiotic organisms with unique secondary metabolism. Various metabolites from lichens have shown antimicrobial activity. Nevertheless, very few studies have investigated the antimicrobial potential of the volatile compounds they produce. This study investigates the chemical composition and antimicrobial properties of volatile compounds from Pseudevernia furfuracea collected in two regions of Morocc...
Exploring the biosurfactant potential of Actinobacteria isolated from Ruta grav...
Ferreira, Sílvia; Ribeiro, Inês; Oliveira, Rui S.; Carvalho, Maria de FátimaBiosurfactants are surface-active compounds known for their emulsifying properties and numerous advantages, including low environmental toxicity, eco-friendliness, biodegradability and acceptability. These molecules are amphiphilic, containing both hydrophilic and hydrophobic ends, allowing them to interact at the aqueous-non-aqueous interface. Bacterial biosurfactants are interesting due to their various field...
Cadmium effects on net N2O production by the deep-sea isolate Shewanella loihic...
Pizarro, Leonor; Magalhães, Catarina; Almeida, C. Marisa R.; Carvalho, Maria de Fátima; Semedo, MiguelDeep-sea mining may lead to the release of high concentrations of metals into the surrounding seabed, which can disturb important ecosystem functions provided by microbial communities. Among these, the production of N2O and its reduction to N2 is of great relevance since N2O is an important greenhouse gas. Metal impacts on net N2O production by deep-sea bacteria are, however, currently unexplored. Here, we eval...
Mapping human pathogens in wastewater using a metatranscriptomic approach
Carneiro, João; Pascoal, Francisco; Semedo, Miguel; Pratas, Diogo; Tomasino, Maria Paola; Rego, Adriana; Carvalho, Maria de Fátima; Mucha, Ana PaulaThe monitoring of cities' wastewaters for the detection of potentially pathogenic viruses and bacteria has been considered a priority during the COVID-19 pandemic to monitor public health in urban environments. The methodological approaches frequently used for this purpose include deoxyribonucleic acid (DNA)/Ribonucleic acid (RNA) isolation followed by quantitative polymerase chain reaction (qPCR) and reverse t...
Políticas e práticas de educação inclusiva e a constituição social dos sujeitos...
Rozante, Géssica Torres; Carvalho, Maria de FátimaEste trabalho discute o papel desempenhado por políticas e práticas de educação inclusiva na constituição social de sujeitos com Distrofia Muscular de Duchenne e dificuldades decorrentes de sua progressão. Tem como aporte a psicologia histórico-cultural com destaque às contribuições de Vigotski sobre o caráter social do desenvolvimento humano. Os excertos discutidos são produtos de entrevistas abertas com um jo...
MarinEye – A tool for marine monitoring
Martins, Alfredo; Dias, André; Silva, Eduardo; Ferreira, Hugo; Dias, Ireneu; Almeida, José Miguel; Torgo, Luís; Gonçalves, Marco; Guedes, MaurícioThis work presents an autonomous system for marine integrated physical-chemical and biological monitoring – the MarinEye system. It comprises a set of sensors providing diverse and relevant information for oceanic environment characterization and marine biology studies. It is constituted by a physical-chemical water properties sensor suite, a water filtration and sampling system for DNA collection, a plankton i...
MarinEye - A tool for marine monitoring
Martins, Alfredo; Dias, André; Silva, Eduardo; Ferreira, Hugo; Dias, Ireneu; Almeida, José Miguel; Torgo, Luis; Gonçalves, Marco; Guedes, MaurícioThis work presents an autonomous system for marine integrated physical-chemical and biological monitoring – the MarinEye system. It comprises a set of sensors providing diverse and relevant information for oceanic environment characterization and marine biology studies. It is constituted by a physicalchemical water properties sensor suite, a water filtration and sampling system for DNA collection, a plankton im...
Fenton-like application to pretreated cheese whey wastewater
Prazeres, Ana; Carvalho, Maria de Fátima; Rivas, JavierCheese whey wastewater has been treated by the Fenton-like oxidation system after being pre-processed through a coagulation – flocculation stage with FeCl3 or alternatively, through a sedimentation step with Ca(OH)2 plus aerobic digestion. In the first case, Fenton-like oxidation is capable of reducing the initial COD (chemical oxygen demand) to 80% of the initial value, 20% of COD shows recalcitrance to chemic...
Estudo dos Polimorfismo e Quantificação de MBL na Artrite Reumatóide
Branco, Cátia Fabiana Alves; Baptista, Cecília; Damásio, Hugo; Carvalho, Maria de FátimaA artrite reumatóide é uma doença com elevada prevalência, afectando cerca de cem mil pessoas em Portugal (*), sendo uma das principais causas de incapacidade para o trabalho. Por outro lado está associada a uma significativa co-morbilidade, principalmente por doenças cardiovasculares, infecções e neoplasias. A MBL é uma molécula altamente polimórfica e recentes demonstrações indicam que algumas isoformas desta...
Cheese whey management: a review
Prazeres, Ana; Carvalho, Maria de Fátima; Rivas, JavierCheese whey is simultaneously an effluent with nutritional value and a strong organic and saline content. Cheese whey management has been focused in the development of biological treatments without valorization; biological treatments with valorization; physicochemical treatments and direct land application. In the first case, aerobic digestion is reported. In the second case, six main processes are described in...