114 documents found, page 1 of 12

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The Effect of Handlebar Height and Bicycle Frame Length on Muscular Activity du...

Conceição, Ana; Milheiro, Vítor; Parraca, José A.; Rocha, Fernando; Espada, Mário C.; Santos, Fernando J.; Louro, Hugo

The cycling literature is filled with reports of electromyography (EMG) analyses for a better understanding of muscle function during cycling. This research is not just limited to performance, as the cyclist’s goal may be rehabilitation, recreation, or competition, so a bicycle that meets the rider’s needs is essential for a more efficient muscular activity. Therefore, the purpose of this study was to understan...


Characterization of saline waters from Ria de Aveiro (Portugal) for potential u...

Almeida, Lara; Rocha, Fernando; Candeias, Carla

ABSTRACT: This study aims to characterize the properties of the saline waters from an old saltpan at the Ria de Aveiro, and assess its potential use in skin treatments. Eight water samples were collected from two different areas of an open-air salt SPA, during four different climatic seasons between 2020 and 2021. Physichochemical parameters of the waters revealed an alkaline pH and high electrical conductivity...

Date: 2025   |   Origin: Repositório do LNEG

Investigating the hydrothermal activity at Fogo volcano (Cape Verde) using geoc...

Candeias, Carla; Rocha, Fernando; Dumont, Stéphanie; Maineult, Alexis; Ramalho, Ricardo; Madeira, José; Antunes, João

ABSTRACT: Characterizing hydrothermal systems at volcanoes is particularly important as they play a crucial role in controlling eruptive dynamics. On the long term, hydrothermal systems participate in the geochemical alteration of both rocks and soils, through hydrolysis, dissolution, mineral precipitation, and secondary mineralization contributing in the gradual destabilization of volcanic structures. Fogo vol...

Date: 2025   |   Origin: Repositório do LNEG

Geosciences research mapping for Portugal in the year 2023: standing and future...

Tavares, Alexandre; Rocha, Fernando; Dinis, Pedro; Pereira, Alcides

ABSTRACT: This study carries out a mapping of research topics in geosciences within the context of Portugal for the year 2023. The data for this analysis are sourced from 11 Research Centres and 4 other entities whose missions include research as their main objective. A bibliometric analysis is performed using the SCOPUS database for a sample of 103 researchers, with data collected in May 2023. A focus group is...

Date: 2025   |   Origin: Repositório do LNEG

Stream sediments geochemistry in the Valongo anticline, northern Portugal: arse...

Carvalho, Paula; Albuquerque, Teresa; Chambel, Luís; Silva, Manuela; Rocha, Fernando

ABSTRACT: The Valongo anticline is known for the occurrence of several Sb-Au and As-Au mineral deposits, many of which have been exploited since Roman times. The Sb-Au and As-Au deposits occur in brecciated quartz veins, predominantly trending NE-SW, NNW-SSE, and ENE-WSW, cutting Cambrian to Carboniferous formations. An 801-stream sediment campaign was conducted in this area. Factorial kriging was applied as an...

Date: 2025   |   Origin: Repositório do LNEG

Insulin nucleation kinetics in an oscillatory flow-based platform: Protein crys...

Ferreira, Joan; Araújo, Sofia; Ferreira, António; Teixeira, J. A.; Campos, João Moreira de; Rocha, Fernando; Castro, Filipa Juliana Fernandes

Insulin is a human therapeutic protein that has been used to treat diabetes for almost a century. Its crystallization has been of significant interest since the protein is commonly administered by subcutaneous injections of crystalline formulations, where crystal size distribution (CSD) has a critical role in product release and injectability. Herein, insulin crystallization was investigated in a unique platfor...


Electromyographic analysis of deadlift for construction workers

Machado, Renato; Branco, Marco; Conceição, Ana; Rocha, Fernando; Louro, Hugo

Working in construction is physically demanding. The tasks inherent to this professional occupation physically wear workers down, leaving them at a high risk of injury, mainly in the shoulder and knee joints and the lumbar region (Chung et al., 2019; Umer et al., 2018). Those tasks require a great balance capacity and strength of the postural muscles, with the Construction Workers (CW) supporting heavy equipmen...

Date: 2024   |   Origin: Motricidade

Quando "os golos dispensam balizas": uma análise às estratégias de comunicação ...

Rocha, Fernando; Morais, Ricardo

The aim of this study is to verify the social responsibility strategies adopted by the Football Foundation, an initiative created by Liga Portugal. It seeks to investigate the main practices of corporate social responsibility, analyzing how these can be applied in the sporting sphere and, in particular, in the world of soccer. The aim is to evaluate the type of posts that have been made by the Foundation on Fac...


Silurian black shales from Sousel-Barrancos Metallogenic Belt (Ossa-Morena Zone...

Laranjeira, Vanessa; Ribeiro, Joana; Moreira, Noel; Nogueira, Pedro; Mendonça Filho, João Graciano; Rocha, Fernando; Flores, Deolinda

Black shales are commonly spatially associated with metal-rich deposits, wherein organic matter in these rocks may condition or influence the processes related with the concentration of metals and formation of ore deposits. In the Ossa-Morena Zone (South of Portugal), namely in the Sousel-Barrancos metallogenic belt, several Cu mineralized veins occurs, being generally hosted in Silurian metasedimentary units m...


Bioaccessibility by perspiration uptake of minerals from two different sulfurou...

Bastos, Carla Marina; Rocha, Fernando; Patinha, Carla; Marinho Reis, A. Paula

Testing the risks of peloid usage in thermal centers, spas, or at home is essential for establishing safety guidelines regarding peloid formulations and releasing concerning substances. Additionally, evaluating the beneficial effects of specific elements on human health helps understand the therapeutic action and effectiveness of pelotherapy for dermatological or musculoskeletal disorders. A methodology was dev...


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