110 documents found, page 1 of 11

Listeria monocytogenes gut interactions and listeriosis: gut modulation and pat...

Following ingestion via contaminated food, Listeria monocytogenes faces multiple hurdles through the human digestive system, thereby influencing its capacity to cause infection. This review provides a comprehensive overview of the multifaceted mechanisms employed by L. monocytogenes to overcome gastrointestinal hurdles and interact with the host's microbiota, facing chemical and physical barriers such as saliva...

Assessing resilience potentials in management of occupational safety and health...

A resilient Occupational Safety and Health (OSH) management system is crucial for effectively addressing potential future public emergencies, ensuring the continuous protection of workers' safety and health. Therefore, it is essential for organizations, particularly hospitals, to assess their resilient performance and employ tools that are appropriate and tailored to their specific context. This study aims to e...

Ternary composites of poly(vinylidene fluoride-co-hexafluoropropylene) with sil...

In the realm of polymer composites, there is growing interest in the use of more than one filler for achieving multifunctional properties. In this work, a composite separator membrane has been developed for lithium-ion battery application, by incorporating conductive silver nanowires (AgNWs) and titanium dioxide (TiO2) nanoparticles into a poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) polymer matr...

Impact of nitrite on the microbiological quality of a Portuguese Salpicão

Airborne fibers: passive sampling and environmental contamination

Background: Microplastics are synthetic particles or fibers <5mm [1] released from plastic objects into the environment, contaminating indoor and outdoor air and leading to human exposure with unknown consequences [2]. Only a small number of studies with a high geographical distribution have determined the concentration of airborne microplastics, especially of fibers. Objective: This work aimed at conducting...

Evaluation of the systemic oxidative stress status upon in vivo exposure to tra...

Background: Tramadol and tapentadol are synthetic centrally acting analgesic opioids, used in the treatment of moderate to severe pain [1]. Despite their optimized therapeutic and safety profiles, these compounds are associated with adverse effects, namely CNS and respiratory depression, abuse and dependence [2, 3]. Oxidative stress is one of the main toxicity mechanisms triggered by opioids [1, 4, 5]. Objectiv...

Spores in fabrics: resistance to disinfection by UVC radiation and ozone

Magnesium stents manufacturing: experimental application of a novel hybrid thin...

The present study addresses a thin-walled investment casting methodology of AZ91D-1 wt% CaO magnesium alloy for stent manufacturing. Additive manufacturing and Yttria-based coating were applied to optimize the process. An induction melting furnace assisted by vacuum was used to cast magnesium alloy stents with 0.4 mm and 0.8 mm wall thickness under an argon-protective atmosphere. According to the proposed metho...

Nanocomposites for energy storage applications

Energy storage devices are essential to meet the energy demands of humanity without relying on fossil fuels, the advances provided by nanotechnology supporting the development of advanced materials to ensure energy and environmental sustainability for the future. The electrochemical energy storage devices that currently stand out the most are lithium-ion batteries and supercapacitors. Furthermore, the demand on...

Challenges and opportunities of decarbonization for the economic recovery post-...

Countries face a double challenge of unprecedented scale consisting on drastically reducing carbon emissions in the time of a generation, while recovering the economy from the worst pandemic crisis in a century. Innovation is key in the response to this double challenge. Innovation policies are increasingly directed at achieving both goals, as governments seek opportunities for transforming the economic structu...