Gonçalo Carvalho, Rita Bento, Carlos Bhatt,
It generally accepted that most building structures shall exhibit a nonlinear response when subjected to medium-high intensity earthquakes. It is currently known, however, that this phenomenon is not properly modelled in the majority of cases, especially at the design stage, where only simple linear methods have effectively been used. Recently, as a result of the exponential progress of computational tools, nonlinear modelling and analysis have gradually been brought to a more promising level. A ...
Tópico(s): Structural Response to Dynamic Loads
2013 - | Earthquakes and Structures
Khalid Tahri, Andreia A. Duarte, Gonçalo Carvalho, Paulo A. Ribeiro, Marco Gomes da Silva, Davide Mendes, Nezha El Bari, Maria Raposo, Benachir Bouchikhi,
Abstract BACKGROUND In this paper, various extra‐virgin and virgin olive oils samples from different Portuguese markets were studied. For this purpose, a voltammetric electronic tongue (VE‐tongue), consisting of two kinds of working electrode within the array, together with physicochemical analysis and headspace gas chromatography coupled with mass spectrometry (HS‐GC–MS), were applied. In addition, preliminary considerations of relationships between physicochemical parameters and multisensory system ...
Tópico(s): Analytical Chemistry and Chromatography
2017 - Wiley | Journal of the Science of Food and Agriculture
João A.S. Oliveira, Gonçalo Carvalho, Bruno Cabral, Jorge Bernardino,
Cyber-Physical Systems (CPS) are a prominent component of the modern digital transformation, which combines the dynamics of the physical processes with those of software and networks. Critical infrastructures have built-in CPS, and assessing its risk is crucial to avoid significant losses, both economic and social. As CPS are increasingly attached to the world’s main industries, these systems’ criticality depends not only on software efficiency and availability but also on cyber-security awareness. ...
Tópico(s): Information and Cyber Security
2020 - Multidisciplinary Digital Publishing Institute | Future Internet
Gonçalo Carvalho, Bruno Cabral, Vasco Pereira, Jorge Bernardino,
Edge Computing (EC) is a recent architectural paradigm that brings computation close to end-users with the aim of reducing latency and bandwidth bottlenecks, which 5G technologies are committed to further reduce, while also achieving higher reliability. EC enables computation offloading from end devices to edge nodes. Deciding whether a task should be offloaded, or not, is not trivial. Moreover, deciding when and where to offload a task makes things even harder and making inadequate or off-time decisions ...
Tópico(s): Age of Information Optimization
2020 - Elsevier BV | Engineering Applications of Artificial Intelligence
Gonçalo Carvalho, Bruno Cabral, Vasco Pereira, Jorge Bernardino,
Tópico(s): Caching and Content Delivery
2021 - Springer Science+Business Media | Computing
Luís Machado, Gonçalo Carvalho, Ricardo N. Pereira,
Microalgae are known to have higher photosynthetic efficiencies when compared to land-based plants. The use of microalgae biomass as a protein source is attracting attention due to its interesting protein composition and sustainable character when compared to conventional animal and plant protein-based sources. Nonetheless, the existence of a rigid cell wall is typical for most microalgae species, and this presents a serious obstacle to a higher bioaccessibility of their valuable protein fractions. ...
Tópico(s): Aquaculture Nutrition and Growth
2022 - | Biomass
Gonçalo Carvalho, Ana Catarina Leite, Rita Leal, Ricardo N. Pereira,
The brewing industry is regarded as a fiercely competitive and insatiable sector of activity, driven by the significant technological improvements observed in recent years and the most recent consumer trends pointing to a sharp demand for sensory enhanced beers. Some emergent and sustainable technologies regarding food processing such as pulsed electric fields (PEF), ultrasound (US), thermosonication (TS), high-pressure processing (HPP), and ohmic heating (OH) have shown the potential to contribute to ...
Tópico(s): Postharvest Quality and Shelf Life Management
2023 - Multidisciplinary Digital Publishing Institute | Beverages
Gonçalo Carvalho, Sergii Mykolyshyn, Bruno Cabral, Jorge Bernardino, Vasco Pereira,
Conceptual modeling describes the physical or social aspects of the world abstractly, encompassing the interpretation of data production, gathering, visualization, and analysis. The quality of the data analysis system will limit the excellence of any decision-making process. Thus, accurately specifying the physical data model is essential. The primary goal of our work is to compare tools that can create this physical model. We recognize several types of data models, but we only include the relational ...
Tópico(s): Business Process Modeling and Analysis
2021 - Institute of Electrical and Electronics Engineers | IEEE Access
Joaquim Ribeiro, GM Carvalho, Jorge M.S. Gonçalves, Karim Erzini,
... Portugal): influence of habitat and season Joaquim Ribeiro*, Gonçalo M. Carvalho, Jorge M. S. Gonçalves, Karim Erzini Centro de ...
Tópico(s): Aquatic life and conservation
2011 - Inter-Research | Marine Ecology Progress Series
Ana Paula Paiva, Gonçalo Ivo Carvalho, María Clara Costa, Ana M. Rosa da Costa, Carlos A. Nogueira,
The solvent extraction performance of N,N'-dimethyl-N,N'-dibutylmalonamide (DMDBMA) in 1,2-dichloroethane (1,2-DCE) towards platinum(IV) and palladium(II) in hydrochloric acid media was systematically evaluated. Pt(IV) extraction (%E) increases with the HCl concentration in the aqueous phases, being always higher than 72%, whereas Pd(II) extraction decreases from 65% at 1 M HCl to 22% at 8 M HCl. Several stripping agents for the two metals were tested: Pt(IV) is successfully recovered by a 1 M sodium ...
Tópico(s): Analytical chemistry methods development
2014 - Taylor & Francis | Separation Science and Technology
Ana Paula Paiva, Gonçalo Ivo Carvalho, María Clara Costa, Ana M. Rosa da Costa, Carlos A. Nogueira,
The liquid-liquid extraction of platinum(IV) and palladium(II) from hydrochloric acid media was carried out using N,N'-dimethyl-N,N'-dicyclohexylthiodiglycolamide (DMDCHTDGA) in 1,2-dichloroethane (1,2-DCE). Pt(IV) is efficiently extracted from 5 M HCl onwards (%E ≥ 97%), whereas Pd(II) is quantitatively recovered from 1 to 8 M HCl solutions. Both Pt(IV) and Pd(II) can be successfully stripped from the loaded organic phases, the former with a 1 M HCl solution, the latter with 0.1 M thiourea in 1 M HCl. ...
Tópico(s): Metal Extraction and Bioleaching
2013 - Taylor & Francis | Solvent Extraction and Ion Exchange
Ana Paula Paiva, Osvaldo Ortet, Gonçalo Ivo Carvalho, Carlos A. Nogueira,
A hydrometallurgical approach to recover palladium from a spent industrial hydrogenating catalyst is described. The work aimed to enhance palladium and minimize aluminum recoveries. The efficiency of chloride leaching has been evaluated by varying the most determinant parameters affecting the leaching process. HCl solutions and mixtures of HCl and two chloride salts (MgCl2 and NH4Cl) were assessed. The use of H2O2 as oxidant was found essential to improve the Pd leaching to over 90%, together with ...
Tópico(s): Metal Extraction and Bioleaching
2017 - Elsevier BV | Hydrometallurgy
Produção Nacional
Revisado por pares
Nadghia F. Leite-Sampaio, Cícera Natália Figueiredo Leite Gondim, Rachel Anne Alencar Martins, Abolghasem Siyadatpanah, Roghayeh Norouzi, Bonglee Kim, Celestina E. Sobral-Souza, Gonçalo Emanuel Carvalho Gondim, Jaime Ribeiro‐Filho, Henrique Douglas Melo Coutinho,
The increasing rates of antimicrobial resistance have demanded the development of new drugs as conventional antibiotics have become significantly less effective. Evidence has identified a variety of phytocompounds with the potential to be used in the combat of infections caused by multidrug-resistant (MDR) bacteria. Considering the verification that terpenes are promising antibacterial compounds, the present research aimed to evaluate the antibacterial and antibiotic-modulating activity of (+)-α-pinene ...
Tópico(s): Synthesis of Indole Derivatives
2022 - Hindawi Publishing Corporation | BioMed Research International
Ricardo Filipe da Silva Antunes, Cláudia Valéria Seullner Brandão, Gonçalo Carvalho, Cristina Girão, Fernando A. Arosa,
Tópico(s): Erythrocyte Function and Pathophysiology
2009 - Springer Nature | Cellular and Molecular Life Sciences
Mulatu Yohannes Nanusha, J. Carlier, Gonçalo Ivo Carvalho, María Clara Costa, Ana Paula Paiva,
Platinum group metals (PGMs) are highly demanding metals in current high-techs. However, their supply is limited due to their scarcity in natural resources and expensive mining. Solvent extraction in combination with microbial communities were employed for the recovery of palladium from aqueous media. Accordingly, extraction of Pd(II) by N,N′-dimethyl-N,N′-dicyclohexylthiodiglycolamide (DMDCHTDGA) in toluene and subsequent stripping by acidic thiourea were carried out, followed by bio-recovery employing ...
Tópico(s): Minerals Flotation and Separation Techniques
2018 - Elsevier BV | Separation and Purification Technology
Gonçalo C. Cardoso, Gonçalo Carvalho Rodrigues, Paulo Alves, Joana R. Vicente, João P. Honrado,
Although invasive animals can compete with native species for resources, detrimental competition for food is seldom reported in the avian invasions literature. In temperate climates, food limitation and energetic stress are higher during winter and, thus, winter diets might reveal competition that is not apparent during the rest of the year. We compared autumn and winter diets of the invasive common waxbill Estrilda astrild in northwest Iberia, and of the native bird most similar to it in foraging ...
Tópico(s): Species Distribution and Climate Change
2018 - Wiley | Journal of Avian Biology
Gerardo J. Osório, Miadreza Shafie‐khah, Gonçalo C. R. Carvalho, João P. S. Catalào,
The residential sector is one of the sectors with the highest rates of electricity consumption worldwide. For years, many studies have been presented in order to minimize energy consumption at the residential level. The idea of such studies is that the residential customer (RC) is the interested party of their own consumption. Moreover, the algorithms that have been developed to predict and manage the energy consumption, also analyze the behavior of the loads, with the objective of minimizing the ...
Tópico(s): Energy Efficiency and Management
2019 - Multidisciplinary Digital Publishing Institute | Energies
João Rosas, Luís M. Camarinha-Matos, Gonçalo Carvalho, Ana Inês Oliveira, Filipa Ferrada,
Society is facing big demographic changes. In 2050, it is expected that the number of elders will reach 1500 million (about 16% of the world population). As people age, they become more dependent on assistance services. Care and assistance organizations start failing, as the number of people who need help increases beyond their ability to comply. The creation of an ecosystem for Ambient Assisted Living, facilitating partnerships creation between service providers, is proposed as a strategy to improve ...
Tópico(s): Context-Aware Activity Recognition Systems
2014 - Springer Science+Business Media | IFIP advances in information and communication technology
Diana Santos, Cláudia Freitas, Hugo Gonçalo Oliveira, Paula Carvalho,
Discussion of the Second HAREM: changes to the guidelines, introduction of new tracks, improvement of evaluation measures and description of the new evaluation resources.
Tópico(s): Global Health Workforce Issues
2008 - Springer Science+Business Media | Lecture notes in computer science
Produção Nacional
Revisado por pares
Cláudia Freitas, Cristina Mota, Diana Santos, Hugo Gonçalo Oliveira, Paula Carvalho,
Tópico(s): Text Readability and Simplification
2010 - Springer Science+Business Media | Language Resources and Evaluation
Zachary T. Kelleher, Akio Matsumoto, Jonathan S. Stamler, Harvey E. Marshall,
... Google Scholar, 30Cruz M.T. Duarte C.B. Goncalo M. Figueiredo A. Carvalho A.P. Lopes M.C. Immunol. Cell Biol. ...
Tópico(s): Immune Response and Inflammation
2007 - Elsevier BV | Journal of Biological Chemistry
Maria Teresa Cruz, Carlos B. Duarte, Margarida Gonçalo, A.P. Carvalho, María Celeste Lopes,
The Janus kinase (JAK) family of protein tyrosine kinases are activated in response to a wide variety of external stimuli. Here we have investigated whether the janus kinase 2 (JAK2) is involved in the induction of nitric oxide synthase type II (iNOS) expression in a mouse fetal skin dendritic cell line (FSDC). In FSDC the expression of iNOS protein and nitric oxide production, in response to the lipopolysaccharide (LPS) stimulus (5 μg/ml), is inhibited by the specific inhibitor of the JAK2, tyrphostin ...
Tópico(s): Immune Response and Inflammation
2001 - Elsevier BV | Nitric Oxide
Maria Teresa Cruz, Carlos B. Duarte, Margarida Gonçalo, A.P. Carvalho, María Celeste Lopes,
In this report, we demonstrate that a fetal mouse skin-derived dendritic cell line produces nitric oxide (NO) in response to the endotoxin [lipopolysaccharide (LPS)] and to cytokines [tumor necrosis factor-α (TNF-α) and granulocyte-macrophage colony-stimulating factor (GM-CSF)]. Expression of the inducible isoform of NO synthase (iNOS) was confirmed by immunofluorescence with an antibody against iNOS. The tyrosine kinase inhibitor genistein decreased LPS- and GM-CSF-induced nitrite ([Formula: see text]) ...
Tópico(s): Reproductive Physiology in Livestock
1999 - American Physical Society | AJP Cell Physiology
Gonçalo Alexandrino, Luís Carvalho Lourenço, Rita Carvalho, Cisaltina Sobrinho, David Horta, Jorge Reis,
Large bowel obstruction can result in significant morbidity and mortality, especially in cases of acute complete obstruction. There are many possible causes, the most common in adults being colorectal cancer. Endometriosis is a benign disease, and the most affected extragenital location is the bowel, especially the rectosigmoid junction. However, transmural involvement and acute occlusion are very rare events. We report an exceptional case of acute large bowel obstruction as the initial presentation ...
Tópico(s): Intestinal and Peritoneal Adhesions
2017 - Karger Publishers | GE Portuguese Journal of Gastroenterology
Jorge Canena, Luís Lopes, J Fernandes, Gonçalo Alexandrino, Luís Carvalho Lourenço, Diogo Libânio, David Horta, Sílvia Giestas, Jorge Reis,
Endoscopic retrograde cholangiopancreatography is the preferred strategy for the management of biliary and pancreatic duct stones. However, difficult stones occur, and electrohydraulic (EHL) and laser lithotripsy (LL) have emerged as treatment modalities for ductal clearance. Recently, single-operator cholangioscopy was introduced, permitting the routine use of these techniques. We aimed to evaluate the clinical effectiveness of cholangioscopy-guided lithotripsy using LL or EHL in patients with difficult ...
Tópico(s): Pediatric Hepatobiliary Diseases and Treatments
2018 - Karger Publishers | GE Portuguese Journal of Gastroenterology
Inês Ribeiro, Florinda Matos, Celeste Jacinto, Hafiz Salman, Gonçalo Cardeal, Helena Carvalho, Radu Godina, Paulo Peças,
Additive manufacturing (AM) is a group of technologies that create objects by adding material layer upon layer, in precise geometric shapes. They are amongst the most disruptive technologies nowadays, potentially changing value chains from the design process to the end-of-life, providing significant advantages over traditional manufacturing processes in terms of flexibility in design and production and waste minimization. Nevertheless, sustainability assessment should also be included in the research ...
Tópico(s): Innovations in Concrete and Construction Materials
2020 - Multidisciplinary Digital Publishing Institute | Sustainability
Produção Nacional
Revisado por pares
Izabela S. Santos, André de Oliveira Carvalho, Gonçalo Apolinário de Souza Filho, Viviane Veiga do Nascimento, Olga Lima Tavares Machado, Valdirene Moreira Gomes,
Plant defensins make up a family of cationic antimicrobial peptides with a characteristic three-dimensional folding pattern stabilized by four disulfide bridges. The aim of this work was the purification and functional expression of a defensin from cowpea seeds and the assessment of its α-amylase inhibitory activity. The cDNA encoding the cowpea defensin was cloned into the pET-32 EK/LIC vector, and the resulting construct was used to transform Escherichia coli cells. The recombinant peptide was ...
Tópico(s): Transgenic Plants and Applications
2009 - Elsevier BV | Protein Expression and Purification
Produção Nacional
Revisado por pares
Patrícia Dias Games, Izabela S. Santos, Érica de Oliveira Mello, Mariângela S. S. Diz, André de Oliveira Carvalho, Gonçalo Apolinário de Souza Filho, Maura Da Cunha, Ilka M. Vasconcelos, Beatriz dos Santos Ferreira, Valdirene Moreira Gomes,
The PvD1 defensin was purified from Phaseolus vulgaris (cv. Pérola) seeds, basically as described by Terras et al. [Terras FRG, Schoofs HME, De Bolle MFC, Van Leuven F, Ress SB, Vanderleyden J, Cammue BPA, Broekaer TWF. Analysis of two novel classes of plant antifungal proteins from radish (Raphanus sativus L.) seeds. J Biol Chem 1992;267(22):15301–9], with some modifications. A DEAE-Sepharose, equilibrated with 20 mM Tris–HCl, pH 8.0, was initially utilized for the separation of peptides after ammonium ...
Tópico(s): Protein Hydrolysis and Bioactive Peptides
2008 - Elsevier BV | Peptides
Rita Castilho, Marta V. Freitas, Gonçalo Silva, Joana Fernandez‐Carvalho, Rui Coelho,
A total of 60 morphometric traits and nucleotide sequences of the entire mtDNA NADH dehydrogenase subunit 2 (ND2) gene [1047 base pair (bp)] in 23 individuals of blackmouth, Galeus melastomus , and 13 individuals of sawtail catsharks, Galeus atlanticus , caught in Southern Portugal, were examined to test the validity of these two taxa. These sharks closely resemble each other, have overlapping geographical ranges and are difficult to identify by morphological characters. Non‐metric multidimensional scaling ...
Tópico(s): Fish Ecology and Management Studies
2007 - Wiley | Journal of Fish Biology
Produção Nacional
Revisado por pares
André de Oliveira Carvalho, Gonçalo Apolinário de Souza Filho, Beatriz Ferreira, Alan T. Branco, Ioná Santos Araújo, Kátia Valevski Sales Fernandes, C.A. Retamal, Valdirene Moreira Gomes,
Lipid transfer proteins (LTPs) are antimicrobial peptides (AMPs) involved in the defense of plants against pathogens. Our group has previously characterized and purified a LTP from cowpea (Vigna unguiculata (L.) Walp.) seeds which caused the inhibition of growth of fungal pathogens in vitro. The aim of this work was to obtain the cDNA encoding the cowpea LTP and after cloning, to use the cDNA as a probe for studying its expression profile during the development of cowpea seeds. In this work, the N-terminal ...
Tópico(s): Transgenic Plants and Applications
2006 - Elsevier BV | Plant Physiology and Biochemistry