Renato Mamede, Fernando Ricardo, Diana Gonçalves, Eduardo Ferreira da Silva, Carla Patinha, Ricardo Calado,
Illegal, unreported and unregulated (IUU) fishing is a major threat to marine ecosystems and their living resources. IUU fishing promotes fraudulent mislabeling of seafood, which can pose serious risks to consumers' health if specimens being traded originate from contaminated areas. The development and optimization of reliable tools to confirm the geographic origin of seafood is therefore of utmost importance under these scenarios. These tools are usually based in reference models of a given species ...
Tópico(s): Forensic and Genetic Research
2021 - Elsevier BV | Ecological Indicators
Renato Mamede, Fernando Ricardo, Andreia Santos, Seila Díaz, Sónia A.O. Santos, Regina Bispo, M. Rosário M. Domingues, Ricardo Calado,
The Manila clam (Ruditapes philippinarum) is one of the most traded bivalves in the world. Knowing its harvesting location is therefore paramount to guarantee the safety of consumers. The present study employs fatty acid (FA) profiles of the adductor muscle (AM) to reveal the most likely harvesting location of four batches of Manila clams suspected of having been illegally sourced from the Tagus estuary. In this ecosystem, where the collection of Manila clams is currently prohibited for food safety ...
Tópico(s): Aquaculture Nutrition and Growth
2020 - Elsevier BV | Food Control
Leandro Sampaio, Renato Mamede, Fernando Ricardo, Luísa Magalhães, Hélder Rocha, Roberto Martins, Jean‐Claude Dauvin, Ana María Rodrigues, Victor Quintino,
This study analyzed the crustacean diversity, distribution and relationship with environmental factors in the western and the southern Portuguese continental shelf, between 10 and 200 m depth. A total of 10,639 specimens belonging to 242 taxa from 90 families were identified, mostly amphipods (55.8% of the total taxa). The mysid Gastrosaccus spinifer and the amphipods Socarnes erythrophthalmus and Cheirocratus sundevallii were the most abundant and the amphipods Ampelisca brevicornis, Leucothoe incisa ...
Tópico(s): Marine and coastal plant biology
2016 - Elsevier BV | Journal of Marine Systems
Victor Quintino, Franca Sangiorgio, Renato Mamede, Fernando Ricardo, Leandro Sampaio, Roberto Martins, Rosa Freitas, Ana María Rodrigues, Alberto Basset,
A growing number of studies suggest that ecological quality status assessment in transitional waters should rely upon functional indicators rather than structural indices. The experimental study of decomposition rates using leaf-bags are among the former. A recent example was conducted in Ria de Aveiro, Western Portugal, and the decomposition rates of Phragmites australis obtained through the registration of the biomass decrease in leaf samples left in the estuary for fixed periods of time (7, 15, ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
2011 - Elsevier BV | Estuarine Coastal and Shelf Science
Victor Quintino, Rosa Freitas, Renato Mamede, Fernando Ricardo, Ana María Rodrigues, Jorge Mota, Ángel Pérez‐Ruzafa, Concepción Marcos,
Abstract Quintino, V., Freitas, R., Mamede, R., Ricardo, F., Rodrigues, A. M., Mota, J., Pérez-Ruzafa, Á., and Marcos, C. 2010. Remote sensing of underwater vegetation using single-beam acoustics. – ICES Journal of Marine Science, 67: 594–605. A single-beam, acoustic, ground-discrimination system (QTC VIEW, Series V) was used to study the distribution of underwater macrophytes in a shallow-water coastal system, employing frequencies of 50 and 200 kHz. The study was conducted in Mar Menor, SE Spain, ...
Tópico(s): Underwater Acoustics Research
2009 - Oxford University Press | ICES Journal of Marine Science
Jorge Baptista, Nuno Mamede, Fernando Gomes,
This paper describes auxiliary verb constructions in European Portuguese in view of their correct parsing in a fully integrated NLP chain. The paper provides data on these constructions over a large-sized corpus and evaluates the parsing system performance.
Tópico(s): Speech and dialogue systems
2010 - Springer Science+Business Media | Lecture notes in computer science
Hazem Hadla, Fernando Mamede Santos,
Simulation studies of three synchronous reluctance motor (SynRM) control strategies are presented: field-oriented control (FOC), direct torque control (DTC), and finite-set model-predictive control (FS-MPC). FOC uses linear controllers and pulse-width modulation to control the fundamental components of the load voltages vectors. In contrast, DTC and FS-MPC are nonlinear strategies wherein the voltage vectors are directly generated in the absence of a modulator. Theoretical operating principles and control ...
Tópico(s): Microgrid Control and Optimization
2022 - Institute of Electrical and Electronics Engineers | Chinese Journal of Electrical Engineering
Renato Mamede, Fernando Ricardo, Renato Abreu, Eduardo Ferreira da Silva, Carla Patinha, Ricardo Calado,
Seaweeds are an important marine resource and are currently used in a wide range of applications, such as food, feed, pharmaceuticals, cosmetics, nutraceuticals, and biomaterials. Seaweeds uptake a multitude of chemical elements from the environment, which can turn them into high-quality food products or pose a threat to human health. Therefore, knowing the elemental fingerprint of seaweeds, as well as their geographic origin, is of utmost importance for their valorization and to safeguard public ...
Tópico(s): Food Industry and Aquatic Biology
2021 - Elsevier BV | Algal Research
Produção Nacional
Revisado por pares
Roberto de Moraes Lima Silveira, Wilson Mamedes Leão-Neto, Fernando Henrique Barbosa da Silva,
Seed dispersion is a critical process to vegetation dynamics which is particularly complex in mosaic-like landscapes as the Pantanal wetlands. We analyzed some aspects of ichthyochory in the Pantanal flooded grasslands. The fish were collected and had their whole intestinal contents removed and submitted to suitable germination conditions for 179 days. We collected 661 specimens belonging to 40 species. Feces from Astyanax lacustris, Poptela paraguayensis, Moenkhausia sanctafilomena and Moenkhausia ...
Tópico(s): Fish Biology and Ecology Studies
2019 - Taylor & Francis | Studies on Neotropical Fauna and Environment
Mamede de Carvalho, Reinhold P. Linke, Fernando Domingos, Teresinha Evangelista, José Luís Ducla Soares, W. Nathrath, Maria da Conceição Azevedo Coutinho, Raquel T. Lima, Maria João Saraiva,
A middle age Portuguese woman was investigated for renal amyloidosis. She presented with progressive renal failure, proteinuria, hypertension, and sensory symptoms in the feet. Clinical and neurophysiological evaluation disclosed sensory-autonomic neuropathy. Cardiovascular tests and 123-MIBG investigation showed parasympathetic dysfunction and decrease of myocardial innervation, in accordance with small fiber neuropathy, as usually observed in amyloidosis. Immunohistochemical studies revealed AFib ...
Tópico(s): Dermatological and Skeletal Disorders
2004 - Taylor & Francis | Amyloid
Produção Nacional
Revisado por pares
Maria L. Nunes-Mamede, Fernando G. de Mello, Antônio Roberto Martins,
The time course of dipeptidase activity and the effect of p-mercuribenzoate (PCMB) on the subestimation of the fluorometric determination of angiotensin-converting enzyme (ACE, EC 3.4.15.1) during development was studied. ACE and dipeptidase activities were measured fluorometrically in homogenates of the developing chick retina using Hip-His-Leu and His-Leu as substrates, respectively, both either in the presence or in the absence of 1 mM PCMB. ACE activity was inhibited by captopril (IC50 1.7 nM), ...
Tópico(s): Neuropeptides and Animal Physiology
1990 - Elsevier BV | Journal of Neuroscience Methods
Produção Nacional
Revisado por pares
Maria L. Nunes-Mamede, Fernando G. de Mello, Antônio Roberto Martins,
The activity of angiotensin I-converting enzyme (ACE, EC 3.4.15.1), measured using Hip-His-Leu as substrate, was determined in the developing chick retina, and in monolayer and aggregate cultures of embryonic retinal cells. ACE specific activity in chick retinal homogenate increased 86-fold from embryonic day 13 until the 7th post-hatching day. The development of ACE activity occured in parallel with that reported for synapse and photoreceptors. ACE activity expression in aggregates, but not in monolayer ...
Tópico(s): Retinal Development and Disorders
1990 - Elsevier BV | Neuroscience Letters
Produção Nacional
Revisado por pares
Ricardo Sant’Anna, Maria Rosário Almeida, Nathalia Varejão, Pablo Gallego, Sebastián Esperante, Priscila S. Ferreira, Alda Pereira-Henriques, Fernando L. Palhano, Mamede de Carvalho, Débora Foguel, David Reverter, Maria João Saraiva, Salvador Ventura,
More than a hundred different Transthyretin (TTR) mutations are associated with fatal systemic amyloidoses. They destabilize the protein tetrameric structure and promote the extracellular deposition of TTR as pathological amyloid fibrils. So far, only mutations R104H and T119M have been shown to stabilize significantly TTR, acting as disease suppressors. We describe a novel A108V non-pathogenic mutation found in a Portuguese subject. This variant is more stable than wild type TTR both in vitro and ...
Tópico(s): Trace Elements in Health
2017 - Nature Portfolio | Scientific Reports
Victor Quintino, Franca Sangiorgio, Fernando Ricardo, Renato Mamede, Adília Pires, Rosa Freitas, Ana María Rodrigues, Alberto Basset,
An experimental study on Phragmites australis leaf litter decomposition was conducted in the estuarine environment, Ria de Aveiro, Western Portugal, using the leaf-bag technique, with fine- (1 mm) and coarse-mesh (5 mm) bags. The leaf bags were placed in the field sites at day 0, covering a complete salinity gradient, and replicates were collected over time, at days 3 (leaching), 7, 15, 30 and 60. The biomass loss through the leaching phase, about 20% of the initial leaf mass, was independent of both ...
Tópico(s): Soil and Water Nutrient Dynamics
2009 - Elsevier BV | Estuarine Coastal and Shelf Science
Fernando Lopes, Nuno Mamede, Augusto Q. Novais, Hélder Coelho,
Autonomous agents are being used in an increasing number of applications. The agents operate in complex environments and, over time, conflicts inevitably occur among them. Negotiation is the predominant process for resolving conflicts. This paper presents a generic negotiation model for autonomous agents that handles multi-party, multi-issue and single or repeated rounds. The model is based on computationally tractable assumptions and accounts for a tight integration of the individual capability ...
Tópico(s): Logic, Reasoning, and Knowledge
2002 - IOS Press | Journal of Intelligent & Fuzzy Systems
Roberto Martins, M.R. Azevedo, Renato Mamede, Bárbara M. de Sousa, Rosa Freitas, Fernando Rocha, Victor Quintino, Ana María Rodrigues,
Tópico(s): Heavy metals in environment
2011 - Elsevier BV | Journal of Marine Systems
Fernando Ricardo, Renato Mamede, Regina Bispo, Andreia Santos, Eduardo Ferreira da Silva, Carla Patinha, Ricardo Calado,
Developing methodologies employed to trace the geographic origin of seafood as accurate and fast as possible can help to speed-up the delivery of results to legal authorities, reduce associated costs and minimize environmental impacts (associated with the residues generated). The present study evaluated if trace element fingerprints (TEF) of a small homogenized subsample of Manila clams (Ruditapes philippinarum) right valve yielded a representative elemental signature of the whole shell. Four elemental ...
Tópico(s): Forensic and Genetic Research
2020 - Elsevier BV | Food Control
Fernando Ricardo, Renato Mamede, Alicia L. Bruzos, Seila Díaz, Julien Thébault, Eduardo Ferreira da Silva, Carla Patinha, Ricardo Calado,
Geographic origin is directly linked to the quality and commercial value of bivalves. The globalization of the seafood trade and the increasing number of fraudulent practices in the bivalves industry has prompted consumers to become increasingly aware on the geographic origin of the seafood they consume. To enhance consumers' confidence and allow authorities to effectively enforce regulations and contain risks that threaten public health, fast and accurate tools must be made available to confirm ...
Tópico(s): Marine Bivalve and Aquaculture Studies
2021 - Elsevier BV | The Science of The Total Environment
Produção Nacional
Clayton Mamedes Angelo, Fernando Antônio Costa Machado, Cláudio Geraldo Schön,
Design specifications in automobile project and construction lead, in recent models, to the preference of using increasingly larger and slender tires. The tire and wheel set, however, is instrumental in determining the loads which act in the entire structure, in particular, in the vehicle body. The influence of different tire sizes and profiles over the load spectra obtained in a rough road test track was investigated by instrumenting fourteen points in the body of a typical passenger's car. It ...
Tópico(s): Asphalt Pavement Performance Evaluation
2014 - Elsevier BV | Materials & Design (1980-2015)
Ana Gabrielle da Silva Mendes, Luísa Coheur, Nuno Mamede, Ricardo Ribeiro, Fernando Batista, David Martins de Matos,
This paper presents QA@L2F, the question-answering system developed at L2F, INESC-ID. QA@L2F follows different strategies according with the question type, and relies strongly on named entity recognition and on the pre-detection of linguistic patterns. Each question type is mapped into a single strategy; however, if no answer is found, the system proceeds and tries to find an answer using one of the other strategies.
Tópico(s): Speech and dialogue systems
2008 - Springer Science+Business Media | Lecture notes in computer science
Fernando Diogo Gouveia, Henrique São Mamede,
Digital transformation is a challenge that many SMEs find difficult to embrace. This difficulty is not due to a lack of will or resources but to the lack of the right strategies for the specific type of organization. It is a common and accepted opinion that many of the digital transformation projects fail or do not achieve the proposed objectives because of the chosen strategy. Digital transformation cannot be seen as a mere evolution of technologies but as a need to shape the entire business of ...
Tópico(s): Service and Product Innovation
2022 - Elsevier BV | Procedia Computer Science
Patricia Mamede da Silva, Fernando Pellon de Miranda, Luiz Landau,
It is important to understand the Solimões River seasonal hydrological cycle and its dynamics to support systematic environmental monitoring efforts in the Amazon region. These are essential to the contingency response to possible accidents in the existing oil transportation network. This study seeks to map the environmental sensitivity to oil spills in the surroundings of Coari city, Amazonas State (AM). A computational method was employed representing the seasonal inundation phenomenon fluctuations, ...
Tópico(s): Automated Road and Building Extraction
2016 - Taylor & Francis | Geocarto International
Elisabete da Costa, Fernando Ricardo, Tânia Melo, Renato Mamede, Renato Abreu, Pedro Domíngues, M. Rosário M. Domingues, Ricardo Calado,
The wild harvest and aquaculture of Ulva spp. has deserved growing attention in Europe. However, the impact of geographical origin on the biochemical composition of different species and/or strains is yet to be described in detail. Hence, the present study aimed to detect the variability of the lipidome of different species and/or strains of Ulva originating from different geographic locations. We hypothesized that lipidomic signatures can be used to trace the geographic origin post-harvesting of ...
Tópico(s): Marine and coastal plant biology
2020 - Multidisciplinary Digital Publishing Institute | Biomolecules
Fernando Batista, Diamantino Caseiro, Nuno Mamede, Isabel Trancoso,
Tópico(s): Speech and dialogue systems
2008 - Elsevier BV | Speech Communication
Alberto Abad, Alfonso Ortega, António Teixeira, Carmén García Mateo, Carlos-D. Martínez-Hinarejos, Fernando Perdigão, Fernando Batista, Nuno Mamede,
This book constitutes the refereed proceedings of the IberSPEECH 2016 Conference, held in Lisbon, Portugal, in November 2016. The 27 papers presented were carefully reviewed and selected from 48 submi
Tópico(s): Speech and dialogue systems
2016 - Springer Science+Business Media | Lecture notes in computer science
Fernando Lopes, Nuno Mamede, Augusto Q. Novais, Hélder Coelho,
Autonomous agents are being increasingly used in a wide range of applications. Most applications involve or require multiple agents operating in complex environments and, over time, conflicts inevitably occur among them. Negotiation is the predominant process for resolving conflicts. Recent interest in electronic commerce has also given increased importance to negotiation. This paper presents a generic negotiation model for autonomous agents that handles multi-party, multi-issue and repeated rounds. ...
Tópico(s): Access Control and Trust
2002 - Springer Science+Business Media | Lecture notes in computer science
Ricardo Ribeiro, Fernando Batista, Joana Paulo Pardal, Nuno Mamede, H. Sofia Pinto,
Tópico(s): Service-Oriented Architecture and Web Services
2006 - Springer Science+Business Media | Lecture notes in computer science
Produção Nacional
Revisado por pares
Kellen Costa, Bruna Barbosa de Sousa, Edigar Henrique Vaz Dias, Déborah Fernanda da Cunha Pereira, Mariana Santos Matias, Wilson Júnior Oliveira, Antônio Vicente Mundim, Carla Cristine Neves Mamede, Luíz Fernando Moreira Izidoro, Júnia de Oliveira Costa, Fábio de Oliveira,
Summary Ophidic accidents are among the problems of public health in Brazil. The components from bothropic venom are responsible for many systemic clinical complications resulting from envenomation. The present work aimed to analyse the systemic changes induced in mice after intraperitoneal administration of Bmoo TX ‐I, a myotoxic acidic phospholipase A 2 isolated from Bothrops moojeni venom. Urinalysis was performed and the following plasma biochemical markers were documented: urea, creatinine and ...
Tópico(s): Rabies epidemiology and control
2018 - Wiley | International Journal of Experimental Pathology
Cláudio Geraldo Schön, Clayton Mamedes Angelo, Fernando Antônio Costa Machado,
One of the most important components related to vehicle dynamics is the tire and wheel set. According to their dimensions (diameter, height, width, design) the vehicle dynamic behavior and driving comfort are seriously affected. Besides these aspects, the wheel/tire configuration has a main role over vehicle design and style. Nowadays, there is a design strategy which main feature is the increase of wheel diameter, causing the reduction of the tire side profile (tire height). After the increase of ...
Tópico(s): Soil Mechanics and Vehicle Dynamics
2014 - Elsevier BV | Procedia Materials Science
Fernando Ricardo, Diana Gonçalves, Tânia Pimentel, Renato Mamede, M. Rosário M. Domingues, Ana I. Lillebø, Ricardo Calado,
Marine bivalves are among the most traded seafood worldwide. Along with their economic value, they are also an excellent source of proteins, vitamins, minerals, omega-3 and omega-6 fatty acids (FA). The FA profiles of the adductor muscle (AM) of bivalves can be successfully used to trace their geographic origin. This approach is paramount for traceability, as it allows to expose fraudulent practices associated with the capture of bivalves from unsuitable areas for human consumption that may put food ...
Tópico(s): Meat and Animal Product Quality
2021 - Elsevier BV | Ecological Indicators