488 documents found, page 1 of 49

Change in monochromatic aberrations with accommodation in a large adult population

Background: During accommodation, the eye undergoes significant structural changes, altering wavefront aberrations. So, this study aimed to evaluate changes in Zernike coefficients up to the 6th order with different accommodation demands and ages in a large cohort of young adults, considering the decrease in pupil size with the accommodation. Methods: Aberrometric measurements for 210 healthy subjects aged 18–4...

Experimental campaign of horizontal cladding wall panels connection in industri...

The connections of cladding wall panels to precast reinforced concrete (PRC) buildings were identified as the source of several non-structural damages reported after recent earthquakes in Europe, highlighting their critical importance. The inadequate performance of these connections often leads to the collapse of cladding panels, resulting in significant economic losses and societal impacts. To better understan...

The Early and Middle Jurassic palynostratigraphy of the Lusitanian Basin (Portu...

ABSTRACT: Palynomorphs, especially dinoflagellate cysts, are important biostratigraphical and palaeoenvironmental tools and their study can be applied to the Lusitanian Basin of Portugal. A palynostratigraphical high-resolution survey was undertaken in eight Lower and Middle Jurassic (upper Sinemurian to lowermost Bathonian) sections from the Lusitanian Basin. We present the resulting biostratigraphical scheme ...

Avaliação das doses de Cone Beam Computed Tomography (CBCT) em pediatria

Enquadramento: O CBCT é o tipo de imagem mais utilizado em radioterapia, no entanto não existem recomendações para os diferentes protocolos [1]. As doses provenientes das imagens diárias poderão atingir 1-3% da dose prescrita, aumentando o risco de tumores radio-induzidos, sendo importante aferir para doentes pediátricos [2]. Objetivo: Pretende-se avaliar as doses de CBCT em doentes pediátricos. Métodos: As med...

Estudo experimental das doses por Tomografia Computorizada de Feixe Cónico em r...

Enquadramento: A Tomografia Computorizada por Feixe Cónico (TCFC) é usada para verificação dos tratamentos em radioterapia (RT). Contudo, a sua utilização implica uma dose adicional de radiação para o doente o que poderá potenciar preocupações sobre os efeitos tecidulares a longo prazo [1-4]. Objetivos: Pretende-se, avaliar as doses absorvidas por TCFC nos protocolos de cabeça, tórax e pélvico e entre três inst...

The composition and structure of bacterial and fungal communities in kiwifruit ...

Photoselective nets in agriculture are typically designed to modify the light spectrum, intensity, and microclimate around crops, influencing plant growth, productivity, and quality. However, knowledge regarding their impact on the microbiota of plants and fruits remains limited. This study assessed the impact of pearl, grey, and yellow photoselective nets on the microbial communities present on kiwifruit surfa...

17.ª Reunião Anual PortFIR - Segurança dos Alimentos: Governança, Ciência e Nov...

Resumo da 17.ª Reunião Anual PortFIR subordinada ao tema "Segurança dos Alimentos: Governança, Ciência e Novos Modelos de Produção Face aos Desafios Globais". A publicação apresenta as comunicações e abstracts/posters submetidos, bem como os resultados da avaliação ao grau de satisfação dos participantes no evento e algumas fotos do evento.

Influence of horizontal cladding wall panels in industrial precast RC buildings...

Recent earthquakes have highlighted the primary vulnerabilities of buildings constructed with precast reinforced concrete elements, particularly issues related to the connections of cladding panels, which have often led to the collapse of these components. In current design practices for precast reinforced concrete industrial buildings, the contribution of cladding panels is typically neglected, as they are ass...

Comparative analysis of the nutritional quality of plant-based processed foods ...

The increasing demand for healthier and more sustainable foods has led to the rise of plant-based processed foods that serve as alternatives to animal-origin products. While plant-based diets are often considered healthful, these products frequently present nutritional limitations. This study aimed to compare the nutritional composition and quality of plant-based and animal-origin processed foods available in t...

Idade e ambientes deposicionais da sucessão do Karoo Inferior da Bacia Carboníf...