Produção Nacional
Revisado por pares
Daniel Santos Mulholland, Géraldo Resende Boaventura, Daniel Ferreira Araújo,
Tópico(s): Mining and Resource Management
2012 - Springer Science+Business Media | Environmental Earth Sciences
Produção Nacional
Revisado por pares
André Roger Rodrigues, Geraldo Caixeta Guimarães, Marcelo Lynce Ribeiro Chaves, Wallace do Couto Boaventura, Daniel Araújo Caixeta, Márcio Augusto Tamashiro,
This paper presents investigative studies concerning the lightning performance of 500 kV transmission lines considering the characteristic parameters of first stroke current observed in measurement data along with its statistical variation. Therefore, advanced electromagnetic models were applied during the development of computational models, thus allowing a realistic representation of the first stroke current waveform. Lightning performance studies were conducted applying two of the most commonly ...
Tópico(s): High voltage insulation and dielectric phenomena
2016 - Elsevier BV | Electric Power Systems Research
Produção Nacional
Revisado por pares
Normara Yane Mar da Costa, Géraldo Resende Boaventura, Daniel Santos Mulholland, Daniel F. Araújo, Ricardo Cosme Arraes Moreira, Kelson do Carmo Freitas Faial, Eudes de Oliveira Bomfim,
Lake Paranoá is a human-made water reservoir created in 1959 together with the new capital of Brazil (Brasilia). With the demands of urban development, population growth, and land use changes, the lake presented severe deterioration of water quality due to the disposal of wastewater with a high concentration of nutrients. To better elucidate the natural and anthropogenic sources controlling the water quality from Lake Paranoá, this study aimed to (1) investigate the main geochemical processes controlling ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2016 - Springer Science+Business Media | Environmental Earth Sciences
Alírio Boaventura, Daniel Belo, Ricardo Fernandes, Ana Collado, Apostolos Georgiadis, Nuno Borges Carvalho,
Traditionally, wireless power is delivered through single-carrier, continuous-wave (CW) signals. Most research efforts to enhance the efficiency of wireless power transfer systems have been confined to the circuit-level design. However, in recent years, attention has been paid to the waveform design for wireless power transmission. It has been found that signals featuring a high peak-to-average power ratio (PAPR) can provide efficiency improvement when compared with CW signals. A number of approaches ...
Tópico(s): Full-Duplex Wireless Communications
2015 - Institute of Electrical and Electronics Engineers | IEEE Microwave Magazine
Produção Nacional
Revisado por pares
Daniel F. Araújo, Géraldo Resende Boaventura, Jérôme Viers, Daniel Santos Mulholland, Dominik J. Weiß, Débora América Frezza Villar de Araújo, Bárbara Lima, Izabel Ramos Ruiz, Wilson Machado, Marly Babinski, Elton Luiz Dantas,
Precise and accurate δ 66/64 Zn data for environmental reference materials (RMs) including rocks, sediments, soils and plants are presented in order to improve the metrological traceability and analytical control of Zn isotope ratio determinations in future environmental studies.Previously developed ion exchange chromatography protocols were adjusted to enable faster sample throughput and instrumental mass bias processes were investigated.The improved chromatographic protocol yielded precise and ...
Tópico(s): Analytical chemistry methods development
2016 - Brazilian Chemical Society | Journal of the Brazilian Chemical Society
Produção Nacional
Revisado por pares
Márcia M. Silva, Francisco José Krug, Pedro V. Oliveira, Joaquim A. Nóbrega, Boaventura F. Reis, Daniel A.G. Penteado,
Abstract A flow injection system coupled to a tungsten coil electrothermal atomizer has been developed for on-line separation and preconcentration, using lead as a model element. The system utilizes three-way solenoid valves for sampling, buffering, washing and reconditioning solution management, and the resin column is inserted in the tip of the autosampler arm of a Varian GTA-96. The solenoid valves and tungsten coil power supply were controlled by a computer program written in Visual Basic, interfaced ...
Tópico(s): Microfluidic and Capillary Electrophoresis Applications
1996 - Elsevier BV | Spectrochimica Acta Part B Atomic Spectroscopy
Produção Nacional
Revisado por pares
Camila Silva Bôaventura, Daniel Padilha Rodrigues, Olimpio Antonio Cornehl Silva, Fabrício Henrique Beltrani, Rayssa Araruna Bezerra de Melo, Almir Galvão Vieira Bitencourt, Gustavo Gomes Mendes, Rubens Chojniak,
To evaluate the indications for performing magnetic resonance imaging of the female pelvis at a referral center for cancer.This was a retrospective, single-center study, conducted by reviewing medical records and imaging reports. We included 1060 female patients who underwent magnetic resonance imaging of the pelvis at a cancer center between January 2013 and June 2014. The indications for performing the examination were classified according to the American College of Radiology (ACR) criteria.The ...
Tópico(s): Ovarian cancer diagnosis and treatment
2017 - Colégio Brasileiro de Radiologia e Diagnóstico por Imagem | Radiologia Brasileira
Rui Martiniano, Lara M. Cassidy, Ros Ó Maoldúin, Russell L. McLaughlin, Nuno Silva, Licínio Manco, Daniel Fidalgo, Tânia Pereira, Maria João Coelho, Miguel Serra, Joachim Bürger, Rui Parreira, Elena Morán, António Carlos Valera, Eduardo Porfírio, Rui Boaventura, Ana María Silva, Daniel G. Bradley,
We analyse new genomic data (0.05–2.95x) from 14 ancient individuals from Portugal distributed from the Middle Neolithic (4200–3500 BC) to the Middle Bronze Age (1740–1430 BC) and impute genomewide diploid genotypes in these together with published ancient Eurasians. While discontinuity is evident in the transition to agriculture across the region, sensitive haplotype-based analyses suggest a significant degree of local hunter-gatherer contribution to later Iberian Neolithic populations. A more subtle ...
Tópico(s): Genetic Associations and Epidemiology
2017 - Public Library of Science | PLoS Genetics
Ana Conceição, António Silva, José Boaventura‐Cunha, Daniel A. Marinho, Hugo Louro,
Abstract The purpose of this paper was to examine the characteristics of waves generated when swimming with and without the use of Aquatrainer® snorkels. Eight male swimmers performed two maximal bouts of 25 m breaststroke, first without the use of a snorkel (normal condition) and then using a snorkel (snorkel condition). The body landmarks, centre of the mass velocity, stroke rate, stroke length, stroke index, and Strouhal number (St) were quantified. Fourier analysis was conducted to determine the ...
Tópico(s): Cardiovascular and Diving-Related Complications
2013 - De Gruyter Open | Journal of Human Kinetics
Produção Nacional
Revisado por pares
Adriano H. Braga, Tais Helena Grechi, Álan Luiz Éckeli, Bruno Boaventura Vieira, Carla E. Itikawa, Daniel S. Küpper, Mírian Aiko Nakane Matsumoto, Luciana Vitaliano Voi Trawitzki, Cláudia Maria de Felício, Regina M.F. Fernandes, Fabiana Cardoso Pereira Valera,
Uvulopalatopharyngoplasty (UPPP) has been described as an option for treating obstructive sleep apnea syndrome (OSAS), with variable success rates. The main purpose of our study was to correlate UPPP success to craniofacial bony structure and orofacial muscles function.Clinical variables, including body mass index (BMI), age, and preoperative apnea-hypopnea index (AHI); cephalometric measurements of the craniofacial region and hyoid bone position; and muscle function variables including clinical protocol ...
Tópico(s): Tracheal and airway disorders
2013 - Elsevier BV | Sleep Medicine
Daniel Ferreira, M. Boaventura, Patrick S. Bárcia, Roger D. Whitley, Adélio Mendes,
Oxygen concentrations above 99.5% are required for several applications, mainly in the medical and aerospace fields. Two-stage pressure swing adsorption (PSA) processes, combining kinetic separation with equilibrium separation, have been developed for producing 99+% oxygen from air. Argon and nitrogen are kinetically removed from the air feed using a carbon molecular sieve adsorbent and the remaining nitrogen is removed using a N2/O2 selective zeolite. Despite that, two-stage processes are often ...
Tópico(s): Catalytic Processes in Materials Science
2015 - American Chemical Society | Industrial & Engineering Chemistry Research
Produção Nacional
Revisado por pares
Carlos Moreira Miquelino Eleto Torres, Laércio Antônio Gonçalves Jacovine, Sílvio Nolasco de Oliveira Neto, Daniel Brianézi, Eliana Boaventura Bernardes Moura Alves,
The agroforestry systems (AFS) are part of the strategic actions to mitigate emissions of greenhouse gases (GHG), which compose the National Policy on Climate Change (NPCC). Considering the importance of these systems in capturing and storing atmospheric carbon it is necessary to evaluate this potential of carbon storage in order to encourage this activity in the context of Brazilian public policy on climate change. In this sense, it is aimed to systematize the available data in the bibliographic, ...
Tópico(s): Rural Development and Agriculture
2014 - Embrapa Forestry | Pesquisa Florestal Brasileira
Produção Nacional
Revisado por pares
Daniel F. Araújo, Wilson Machado, Dominik J. Weiß, Daniel Santos Mulholland, Géraldo Resende Boaventura, Jérôme Viers, Jérémie Garnier, Elton Luiz Dantas, Marly Babinski,
The application of zinc (Zn) isotopes in bivalve tissues to identify zinc sources in estuaries was critically assessed. We determined the zinc isotope composition of mollusks (Crassostrea brasiliana and Perna perna) and suspended particulate matter (SPM) in a tropical estuary (Sepetiba Bay, Brazil) historically impacted by metallurgical activities. The zinc isotope systematics of the SPM was in line with mixing of zinc derived from fluvial material and from metallurgical activities. In contrast, source ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2017 - Elsevier BV | Environmental Pollution
Produção Nacional
Revisado por pares
Daniel F. Araújo, Géraldo Resende Boaventura, Wilson Machado, Jérôme Viers, Dominik J. Weiß, Sambasiva R. Patchineelam, Izabel Ramos Ruiz, Ana Paula de Castro Rodrigues, Marly Babinski, Elton Luiz Dantas,
The use of zinc isotopes to trace anthropogenic sources in coastal areas has been tested in this study. We determined the stable isotopic composition of zinc in sediment cores, suspended particulate matter (SPM) and rocks collected at the Sepetiba Bay (southeastern Brazil), an estuarine lagoon heavily impacted by metallurgic activities. These isotopic signatures were compared with those from willemite ore, which represent the main mineral refined by the major industrial source of zinc. The aim was ...
Tópico(s): Mercury impact and mitigation studies
2016 - Elsevier BV | Chemical Geology
Produção Nacional
Daniel Santos Mulholland, Géraldo Resende Boaventura, Daniel F. Araújo,
O presente trabalhou realizou o estudo geoquímico de três bacias hidrográficas localizadas no alto curso do rio Paracatu (uma das mais importantes sub-bacias do alto-médio São Francisco). Teve como objetivo criar um modelo geoquímico que auxilie na identificação das fontes e distribuição dos componentes físico-químicos e metais dissolvidos na água, avaliando como a geologia local e as atividades antrópicas influenciam na qualidade dos sistemas aquáticos. A geologia predominante da região abrange ...
Tópico(s): Groundwater and Isotope Geochemistry
2010 - | Brazilian Journal of Aquatic Science and Technology
André Aguiar, Nuno Namora Monteiro, Filipe Neves dos Santos, E. J. Solteiro Pires, Daniel Queirós da Silva, Armando Sousa, José Boaventura‐Cunha,
The development of robotic solutions in unstructured environments brings several challenges, mainly in developing safe and reliable navigation solutions. Agricultural environments are particularly unstructured and, therefore, challenging to the implementation of robotics. An example of this is the mountain vineyards, built-in steep slope hills, which are characterized by satellite signal blockage, terrain irregularities, harsh ground inclinations, and others. All of these factors impose the implementation ...
Tópico(s): Remote Sensing and LiDAR Applications
2021 - Multidisciplinary Digital Publishing Institute | Agriculture
Produção Nacional
Revisado por pares
Daniel Santos Mulholland, Franck Poitrasson, Géraldo Resende Boaventura, Thierry Allard, Lucieth Cruz Vieira, Roberto Ventura Santos, Luís Henrique Mancini, Patrick Seyler,
The present study investigated the weathering and transport mechanisms of Fe in the Amazon River. A particular emphasis was placed on Fe partitioning, speciation, and isotopic fractionation in the contrasting waters of the Solimões and Negro rivers and their mixing zone at the beginning of the Amazon River. Samples collected in the end-member rivers and thirteen sites distributed throughout the mixing zone were processed through frontal vacuum filtration and tangential-flow ultrafiltration to separate ...
Tópico(s): Heavy metals in environment
2014 - Elsevier BV | Geochimica et Cosmochimica Acta
Produção Nacional
Revisado por pares
Enoc Lima do Rêgo, Géraldo Resende Boaventura, Oldair Donizeti Leite, Daniel F. Araújo, Anderson Santos Souza, Lucas Garcia Magalhães Peres, Aline Suares Coutinho Lima, José Domingos Santos da Silva, Jurandir Rodrigues de Souza,
Tópico(s): Geochemistry and Elemental Analysis
2021 - Springer Science+Business Media | Environmental Earth Sciences
Produção Nacional
Revisado por pares
Kevan Akrami, Betânia M. F. Nogueira, Mateus Santana do Rosário, Laíse de Moraes, Marli Tenório Cordeiro, Rodrigo Haddad, Lillian Nunes Gomes, Isabele de Pádua Carvalho, Ellen dos Reis Pimentel, Jéssica de Jesus Silva, Marcos Vinícius Lima de Oliveira Francisco, Isadora Cristina de Siqueira, Daniel Santana Farias, Manoel Barral‐Netto, Aldina Barral, Viviane Boaventura, Ricardo Khouri,
Zika virus cases in Brazil have diminished since emergence in 2015. We report Guillain Barré Syndrome caused by Zika and possible Chikungunya co-infection during an expected low arboviral season. This case highlights the importance of clinical vigilance for Zika in those with neurological syndromes outside typical arboviral season.
Tópico(s): Viral Infections and Vectors
2020 - Oxford University Press | Journal of Travel Medicine
Produção Nacional
Revisado por pares
Thiago M. Cardoso, Jonilson Berlink Lima, Ícaro Bonyek-Silva, Sara Nunes, Daniel F. Feijó, Hugo Leonardo de Almeida, Juliana Silva, Aldina Barral, Viviane Boaventura, Valéria M. Borges, Dario S. Zamboni, Lucas P. Carvalho, Edgar M. Carvalho, Natália Machado Tavares, Cláudia Brodskyn,
... Nunes: http://orcid.org/0000-0001-8546-7598 Daniel Feijó: http://orcid.org/0000-0002-3552-8847 Hugo Almeida: http://orcid.org/0000-0002-6584-228X Juliana Silva: http://orcid.org/0000-0002-5546-932X Aldina Barral: http://orcid.org/0000-0002-7177-464X Viviane Boaventura: http://orcid.org/0000-0002-7241-6844 Valéria ...
Tópico(s): Eosinophilic Disorders and Syndromes
2020 - Elsevier BV | Journal of Investigative Dermatology
Wendell J. Pereira, Jade Boyd, Daniel Conde, Paolo M. Triozzi, Kelly M. Balmant, Christopher Dervinis, Henry W. Schmidt, Carolina Ribeiro Diniz Boaventura Novaes, Sanhita Chakraborty, Sara Knaack, Yueyao Gao, F. Alex Feltus, Sushmita Roy, Jean‐Michel Ané, Julia Frugoli, Matias Kirst,
Legumes establish a symbiotic relationship with nitrogen-fixing rhizobia by developing nodules. Nodules are modified lateral roots that undergo changes in their cellular development in response to bacteria, but the transcriptional reprogramming that occurs in these root cells remains largely uncharacterized. Here, we describe the cell-type-specific transcriptome response of Medicago truncatula roots to rhizobia during early nodule development in the wild-type genotype Jemalong A17, complemented ...
Tópico(s): Plant-Microbe Interactions and Immunity
2024 - Cell Press | Cell Reports
Arnaldo S. R. Oliveira, Nuno Borges Carvalho, J. Santos, Alírio Boaventura, Rui F. Cordeiro, André Prata, Daniel Costa Dinis,
Radio-frequency identification (RFID) readers are the main bottleneck when building an RFID system. The cost of the readers can be high, and these devices can be bulky. Moreover, when these RFID readers have to be included in a small mobile device, the cost increases, or the system becomes more complex to put together.
Tópico(s): RFID technology advancements
2021 - Institute of Electrical and Electronics Engineers | IEEE Microwave Magazine
Produção Nacional
Revisado por pares
Flávia Branco Cerqueira Serra Neves, Camila Silva Bôaventura, Almir Galvão Vieira Bitencourt, Daniel Abensur Athanazio, Mitermayer Galvão dos Reis,
OBJETIVO: Avaliar modificações implementadas recentemente num curso de Patologia Geral (PG), com vistas a incentivar a auto-instrução dos alunos por meio de recursos eletrônicos. METODOLOGIA: Estudantes do curso de PG da Escola Bahiana de Medicina e Saúde Pública foram solicitados a preencher um questionário sobre modificações implementadas na disciplina, entre elas a utilização de um CD-ROM elaborado e distribuído pela disciplina. RESULTADOS: Foram avaliados 288 estudantes. A importância média dada ...
Tópico(s): Science and Education Research
2008 - Associção Brasileira de Educação Médica | Revista Brasileira de Educação Médica
Produção Nacional
Revisado por pares
Ricardo Massulo Albertín, Daniel Augusto, Boaventura Almeida Mubai, Bruno Luiz Domingos De Angelis, Márcia da Silva, Frederico Fonseca da Silva, Fábio Angeoletto,
A urbanização resulta numa gama diversificada de impactos sociais negativos, dentre eles a insegurança alimentar. Uma forma de minimizar ou compensar a ocorrência e a intensificação deste impacto seria a implementação da agricultura urbana e periurbana, na qual se enquadra as hortas urbanas. O objetivo do presente trabalho foi diagnosticar os aspectos socioeconômicos dos produtores de hortaliças e identificar a percepção dos transeuntes do entorno das hortas urbanas, denominada de hortas comunitárias ...
Tópico(s): Rural Development and Agriculture
2016 - UNIVERSIDADE ESTADUAL DE MARINGÁ | Boletim de Geografia
André Fonseca, Daniel P. Ames, Ping Yang, Cidália M.S. Botelho, Rui A.R. Boaventura, Vítor J.P. Vilar,
Parameter uncertainty and sensitivity for a watershed-scale simulation model in Portugal were explored to identify the most critical model parameters in terms of model calibration and prediction. The research is intended to help provide guidance regarding allocation of limited data collection and model parameterization resources for modelers working in any data and resource limited environment. The watershed-scale hydrology and water quality simulation model, Hydrologic Simulation Program – FORTRAN ( ...
Tópico(s): Hydrological Forecasting Using AI
2013 - Elsevier BV | Environmental Modelling & Software
Produção Nacional
Revisado por pares
Camila M. Boaventura, Francisco J. R. C. Coelho, Patrícia Martins, Ana C. C. Pires, Letícia N. Duarte, Ana Paula Trovatti Uetanabaro, Daniel F. R. Cleary, Newton C. M. Gomes,
Microbial communities are key players in the process of nutrient cycling and maintenance of fish health in aquaculture systems. The role and importance of bacteria in these systems has been widely studied. However, very little is known about micro-eukaryotic plankton composition and function in aquaculture systems. Here we used denaturing gradient gel electrophoresis (DGGE) and Illumina 18S rRNA gene deep sequencing analysis to study the structure and diversity of micro-eukaryotic communities of ...
Tópico(s): Myxozoan Parasites in Aquatic Species
2018 - Elsevier BV | Aquaculture
Produção Nacional
Revisado por pares
Franck Poitrasson, Lucieth Cruz Vieira, Patrick Seyler, Giana Márcia dos Santos Pinheiro, Daniel Santos Mulholland, Marie‐Paule Bonnet, Jean‐Michel Martinez, Bárbara Lima, Géraldo Resende Boaventura, Jérôme Chmeleff, Elton Luiz Dantas, Jean‐Loup Guyot, Luís Henrique Mancini, Márcio Martins Pimentel, Roberto Ventura Santos, Francis Sondag, Philippe Vauchel,
The present study provides iron concentrations and isotopic compositions determined by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS), along with key chemical, mineralogical and physical properties of 35 representative bulk (unfiltered) waters and bulk sediments from the Amazon River Basin. These samples from the Amazon River, five of its main tributaries (the Solimões, Negro, Madeira, Tapajós and Trombetas rivers) and four sub-tributaries (the Purus, Jaú, Ucayali and Napo ...
Tópico(s): Heavy metals in environment
2014 - Elsevier BV | Chemical Geology
João H.O.S. Pereira, Daniel Queirós, Ana C. Reis, Olga C. Nunes, Maria-Teresa Borges, Rui A.R. Boaventura, Vítor J.P. Vilar,
This work demonstrates the application at near neutral pH of a photo-Fenton reaction mediated by ferricarboxylates on the treatment of aqueous solutions containing the antibiotic Oxytetracycline (OTC) under solar irradiation. The formation of a Fe:OTC complex after Fe2+ oxidation to Fe3+, in the presence of H2O2, showed the inconvenience of using the conventional Fe2+/H2O2/UV–Vis process at near neutral pH levels, as the complex is retained in the filter. To overcome this, a Fe3+/Oxalate/UV–Vis or ...
Tópico(s): Advanced Photocatalysis Techniques
2014 - Elsevier BV | Chemical Engineering Journal
Tópico(s): Latin American Cultural Politics
2014 - SAGE Publishing | International Sociology
Produção Nacional
Revisado por pares
Diogo Bandeiro de Souza, Maria Walburga dos Santos, Rafael Romeiro Doin,
... Silva, Alice C. Lopes, Elizabeth Macedo, Stuart Hall, Boaventura de S. Santos, Daniel Munduruku e Paulo Freire.
Tópico(s): Linguistics and Education Research
2022 - | Revista e-Curriculum