61 documents found, page 1 of 7

Predominance of Genotype 5 Hepatitis Delta Virus Infection in a Portuguese Hepa...

Hepatitis delta virus (HDV) infection is the most severe form of viral hepatitis. Genotype 1 (HDV-1) is by far the most prevalent in Europe and globally, while HDV-5 predominates in Western Africa. Data about HDV seroprevalence in Portugal are scarce and genotyping studies have not been performed yet. We aimed to assess the seroprevalence and genotypes of HDV in a large cohort of HBsAg-positive patients followe...

O papel da esfera civil nos processos de mudança institucional: O caso das leis...

Na última década, os estudos que se centram na análise da interação entre a esfera civil e os agentes políticos em processos de mudança do sistema eleitoral têm vindo a aumentar. Alguma desta literatura centra-se nas propostas de alteração dos sistemas eleitorais em direção à proporcionalidade (Colomer, 2016) e à personalização (Renwick e Pilet, 2016) realizadas por agentes políticos, e que visam dar aos cidadã...

Les systèmes électoraux dans les pays africains de langue officielle portugaise...

Improving the performance of paper-based dipole antennas by electromagnetic flu...

One of the essential issues in modern advanced materials science is to design and manufacture flexible devices, in particular in the framework of the Internet of Things (IoT), to improve integration into applications. An antenna is an essential component of wireless communication modules and, in addition to flexibility, compact dimensions, printability, low cost, and environ-mentally friendlier production strat...

Anti-inflammatory effect of the antidepressant fluvoxamine – a systematic review

Neuroinflammation corresponds to the immune response of the nervous system to an injury, infection or neurodegenerative disease characterized by the activation of resident glial cells, including microglia and astrocytes, the release of cytokines and chemokines and the activation and migration of leukocytes. Evidence suggests that inflammatory cytokines may be a central factor, affecting multiple neuronal pathwa...

The involvement of Nrf2 in depression: systematic review of preclinical studies

Increased levels of pro-inflammatory cytokines and decreased antioxidant defenses are likely to be linked to the development of depressive symptoms. Nrf2 plays an important role in cellular defense against oxidative stress and binds to ARE, which is located in the promoter region of several phase II antioxidant enzymes and associated stress-responsive enzymes. Reduced Keap1-Nrf2 signaling is implicated in the p...

Plastic Food Packaging: Perceptions and Attitudes of Portuguese Consumers about...

The use of plastics for packaging has some advantages, since they are flexible and inexpensive. However, most plastics are of single use, which, combined with low recycling or reuse ratios, contributes substantially to environmental pollution. This work is part of a project studying the habits of Portuguese citizens concerning plastic food packaging and focuses on aspects related to sustainability. The survey w...

How does sustainability affect consumer choices in the fashion industry?

The fashion industry being one of the most polluting industries in the world means that it is an industry with an immense potential for change. Consumers are central and are closely intertwined with how companies act. This research reflects consumer perspectives and practices towards the topic of sustainability implemented in the fashion industry. The relevance of sustainability in the fashion industry and the ...

Emissions from residential pellet combustion of an invasive acacia species

Currently, different types of raw materials are under investigation to fulfil the demand for pellet-based renewable energy. The aim of this study was to experimentally quantify and characterise the gaseous and particulate matter (PM10) emissions from the combustion of a pelletised invasive species growing in the Portuguese coastal areas. The combustion of acacia pellets in a stove used for domestic heating led ...

Aporte energético e nutricional e fatores de risco cardiovascular em doentes ap...