26 documents found, page 1 of 3

Tribological behaviour of antimicrobial surfaces for orthopaedics and oral reha...

Inflammatory reactions around implants and prosthetics can occur due to the accumulation of pathogenic bacteria species. The long-term success of implants and prostheses depends on the healthy state of surrounding mucosa, bone, and connective tissues, that can be controlled by manufacturing surfaces with specific physical-chemical aspects to prevent the accumulation of bacteria. Among several properties, the fr...

Influence of plasmonic thin-film-coated photobioreactors on microalgal biomass ...

Microalgae emerge as an eco-friendly solution for food, feed, pharmaceutical, energy, and environmental remediation, providing a diverse range of valuable biocompounds to address the growing global demand. However, light conditions pose substantial challenges, limiting their photosynthetic efficiency and productivity. Light concentration and manipulation provided by plasmonic effects, coupled with photobioreact...

Long-term hydrophilic PDMS surfaces using Brij L4: A simple and robust approach...

Polydimethylsiloxane (PDMS) is a widely used material in the production of microfluidic devices and biomodels, due to its exceptional mechanical, chemical and biocompatible properties. Recently, a novel class of devices known as microphysiological systems have emerged, combining microfluidic technology and cell culture, mimicking the microphysiological features of the human body to facilitate the study of both ...

Trabalhos arqueológicos na Casa de Andercus (Conimbriga, prov. Lusitania) 2019-...

Polydimethylsiloxane surface modification of microfluidic devices for blood pla...

Over 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...

Nanoplasmonic Au:CuO thin films functionalized with APTES to enhance the sensit...

Carbon monoxide (CO) is a highly flammable and toxic gas to humans and animals, that's why its detection and monitoring are crucial. A promising technique to develop a robust and cheap gas sensor, operating at room temperature, is Localized Surface Plasmon Resonance (LSPR) sensing. However, LSPR sensing of inorganic gas molecules, such as CO, is challenging due to their extremely small differences in refractive...

Critical issues on the surface functionalization of plasmonic Au-Ag/TiO2 thin f...

This work reports on the surface functionalization of a nanomaterial supporting localized surface plasmon resonances (LSPRs) with (synthetic) thiolated oligonucleotide-based biorecognition elements, envisaging the development of selective LSPR-based DNA biosensors. The LSPR thin-film transducers are composed of noble metal nanoparticles (NPs) embedded in a TiO2 dielectric matrix, produced cost-effectively and s...

Evidencias da ocupação romana no centro de Portimão: o contexto funerário do Ja...

O projecto de reabilitação do Jardim 1º de Dezembro em Portimão foi alvo de trabalhos de minimização de impactes arqueológicos, considerando a sensibilidade arqueológica do local, nomeadamente a possibilidade de integrar vestígios da muralha tardo-medieval de Vila Nova de Portimão. Foi possível verifi car que esta estrutura defensiva cobria parcialmente uma outra realidade contextual de cronologia romana, nomea...

Recent advances in nanomaterial-based optical biosensors for food safety applic...

Global population growth tremendously impacts the global food industry, endangering food safety and quality. Mycotoxins, particularly Ochratoxin-A (OTA), emerge as a food chain production threat, since it is produced by fungus that contaminates different food species and products. Beyond this, OTA exhibits a possible human toxicological risk that can lead to carcinogenic and neurological diseases. A selective, ...

Functionalization of gutta-percha surfaces with argon and oxygen plasma treatme...

Gutta-percha's lack of adhesion has been presented as a drawback to avoid gaps at sealer/gutta-percha interface. Plasma treatments have been scarcely assessed on gutta-percha surfaces as a method of enhancing adhesiveness. This study aimed to evaluate the effect of low-pressure Argon and Oxygen plasma atmospheres on conventional and bioceramic gutta-percha standardized smooth discs, assessing their roughness, s...