Sebastião S. Alves, Jorge Vasconcelos, Jorge Barata,
Liquid mixing in tall tanks agitated by multiple radial turbines can be modelled by a cascade of well-mixed compartments with backflows. Models have been proposed with different numbers of compartments per stage of agitation. In this paper, the five simplest models are compared in their ability to predict mixing times and concentration transients, and in their requirement for adjusted parameters. Examined models have from 1 to 4 compartments per agitation stage. The model which consists of 3 compartments ...
Tópico(s): Cyclone Separators and Fluid Dynamics
1997 - Elsevier BV | Process Safety and Environmental Protection
Jorge Vasconcelos, Jorge M.R. Carvalho,
Abstract Treatment of a given multicomponent cationic mixture was studied applying the emulsion liquid membrane (ELM) separation technique for Zn recovery. Experimental apparatus and conditions are described. Comparative studies using two zinc‐selective ion exchangers (thio‐DEHPA and dithio‐DEHPA) were carried out whereby the composition of the liquid membrane and the operating conditions were investigated for both extractants. A useful method of representing the concentrations of the feed and the ...
Tópico(s): Radioactive element chemistry and processing
1993 - Wiley | Chemical Engineering & Technology
Jorge Vasconcelos, Jorge Barata, Sebastião S. Alves,
Blending of viscous newtonian liquids was studied in dual- and triple-turbine agitated tanks. The dimensionless power, mixing and interstage flow numbers were all found to be dependent on the Reynolds number as long as the full development of turbulence was inhibited by viscosity (Re < 2 × 104) and they were found to be constant above that limit. The complexity of the transitional regime makes it adverse for simple correlation, but, surprisingly, modelling of mixing in the upper transition region (Re > ...
Tópico(s): Petroleum Processing and Analysis
1996 - Elsevier BV | The Chemical Engineering Journal and the Biochemical Engineering Journal
Produção Nacional
Revisado por pares
Raimunda do Socorro da Silva Azevedo, Marialva Tereza Ferreira de Araújo, Consuelo Silva de Oliveira, Arnaldo Jorge Martins Filho, Bruno Nunes, Daniele Freitas Henriques, Eliana Silva, Valéria Lima Carvalho, Jannifer Oliveira Chiang, Livia Carício Martins, Barbara Cristina Baldez Vasconcelos, Jorge Rodrigues de Sousa, Fernanda Montenegro de Carvalho Araújo, Erlane Marques Ribeiro, A Rodriguez Castro, Maria De Queiroz, Mariana Pastorello Verotti, Márcio Roberto Teixeira Nunes, Ana Cecília Ribeiro Cruz, Suelí Rodrigues, Pei‐Yong Shi, Juarez Antônio Simões Quaresma, Robert B. Tesh, Pedro Fernando da Costa Vasconcelos,
The recent Zika virus(ZIKV) epidemic in Brazil was characterized by a range of different clinical presentations, particularly microcephaly, Guillain-Barré syndrome, and death. In this context, we determined the causal relationship between fatal microcephaly cases and ZIKV infection.Twelve fatal cases of neonates, whose mothers were infected with ZIKV during pregnancy, were examined; cases included nine neonatal deaths due to microcephaly, one miscarriage, and two stillbirths. Tissue samples were ...
Tópico(s): Global Maternal and Child Health
2018 - Multidisciplinary Digital Publishing Institute | Journal of Clinical Medicine
Produção Nacional
Revisado por pares
David Vasconcelos, Jorge Alberto Soares Tenório, Amilton Barbosa Botelho, Denise Crocce Romano Espinosa,
The exponential growth of electric and hybrid vehicles in the last five years forecasts a waste problem when their batteries achieve end-of-life. Li-ion batteries for vehicles have been assembled using materials from natural resources (as Li, Fe, Al, Cu Co, Mn and P). Among them, LiFePO4 cathode materials have demonstrated advantages such as charge–discharge cycles, thermal stability, surface area and raw materials availability (against Ni and Co systems). Due to the performance, LFP batteries stand ...
Tópico(s): Advanced Battery Materials and Technologies
2023 - Multidisciplinary Digital Publishing Institute | Metals
Produção Nacional
Revisado por pares
Ariana A. Vasconcelos, Jorge C. Estrada, Victor A. David, Luciana S. Wermelinger, Fábio C. L. Almeida, Russolina B. Zingali,
Disintegrins are small cysteine-rich proteins found in a variety of snake venom. These proteins selectively modulate integrin function, heterodimeric receptors involved in cell-cell and cell-matrix interaction that are widely studied as therapeutic targets. Snake venom disintegrins emerged from the snake venom metalloproteinase and are classified according to the sequence size and number of disulfide bonds. Evolutive structure and function diversification of disintegrin family involves a stepwise ...
Tópico(s): Biochemical and Structural Characterization
2021 - Frontiers Media | Frontiers in Molecular Biosciences
António Braga, Tânia Barros, Raquel Faria, António Marinho, Guilherme Rocha, Fátima Farinha, Esmeralda Neves, Carlos Vasconcelos, Jorge Braga,
Tópico(s): Pregnancy and Medication Impact
2021 - Springer Nature | Clinical Reviews in Allergy & Immunology
António Braga, Tânia Barros, Raquel Faria, António Marinho, Graziela Carvalheira, Guilherme Rocha, Fátima Farinha, Esmeralda Neves, Carlos Vasconcelos, Jorge Braga,
Systemic lupus erythematosus (SLE) is a life-threatening disorder that affects women at reproductive age. We evaluate the clinical impact of pregnancy in a cohort of Portuguese SLE patients and the risk factors associated with maternal and fetal adverse outcomes.A retrospective observational study that included all pregnant women with SLE managed at a Portuguese tertiary hospital, between January 1993 and December 2019. Baseline maternal information was collected, and maternal-fetal and neonatal ...
Tópico(s): Pregnancy and preeclampsia studies
2021 - SAGE Publishing | Lupus
Elisa Poletti, Graça Vasconcelos, Jorge M. Branco, Bogdan Isopescu,
Timber-framed architecture is an important heritage common of many countries. However, this is being lost due to natural decay but also climatic changes and natural hazards. To preserve it, it is important to understand the influence of such actions. Timber joints significantly affect the mechanical performances of timber-framed buildings, being the weakest element. In this paper, results are presented from cyclic pull-out test conducted on traditional timber joints subjected to wind driven rain ...
Tópico(s): Hygrothermal properties of building materials
2019 - Elsevier BV | Construction and Building Materials
Ana Cristina Vasconcelos, Jorge Tiago Martins, David Ellis, Elsa Fontaínha,
The aim of this study is to understand and explain different dimensions of absorptive capacity and the strategies used in practice to realise it. The theoretical and conceptual contribution of the study lies in the adoption of a dual process and structure approach, aiming at identifying, respectively, how learning takes place and what learning takes place. The study is based upon a case study research design to explore the manifestation of absorptive capacity processes and its relationship to knowledge ...
Tópico(s): Intellectual Capital and Performance Analysis
2018 - SAGE Publishing | Journal of Information Science
Elisa Poletti, Graça Vasconcelos, Jorge M. Branco, Aikaterini Maria Koukouviki,
Timber joints represent the governing part of a timber structure, particularly when assessing its seismic response. In order to better assess the seismic capacity of traditional timber frame structures, particularly timber-framed shear walls, pull-out and in-plane cyclic tests were carried out on their joints (half-lap joints). The aim is to better understand the influence of the joints on the walls and their influence on failure mechanisms and capacity. Their seismic characterisation was obtained ...
Tópico(s): Structural Load-Bearing Analysis
2016 - Elsevier BV | Construction and Building Materials
Produção Nacional
Revisado por pares
Aline K.A.L. Cipriano, Darcy M.F. Gondim, Ilka M. Vasconcelos, Jorge André Matias Martins, Arlindo A. Moura, Frederico Bruno Mendes Batista Moreno, Ana Cristina de Oliveira Monteiro‐Moreira, José Glauber Moreira Melo, J. E. Cardoso, Ana Luiza Sobral Paiva, José T.A. Oliveira,
Gummosis is an aggressive disease caused by the necrotrophic fungus Lasiodiplodia theobromae (Pat.) Griffon & Maubl that threatens commercial cashew orchads in Brazil. To study the molecular mechanisms involved in the cashew response to L. theobromae, a proteomic analysis of stems from the commercial cashew clone BRS 226 (resistant) was conducted at early times post-artificial infection. In addition, changes in the stem proteome profiles of gummosis resistant and susceptible cashew plants grown under ...
Tópico(s): Plant-Microbe Interactions and Immunity
2014 - Elsevier BV | Journal of Proteomics
Carlos F.C. João, Joana M. Vasconcelos, Jorge Silva, João Paulo Borges,
Scaffolding is at the heart of tissue engineering but the number of techniques available for turning biomaterials into scaffolds displaying the features required for a tissue engineering application is somewhat limited. Inverted colloidal crystals (ICCs) are inverse replicas of an ordered array of monodisperse colloidal particles, which organize themselves in packed long-range crystals. The literature on ICC systems has grown enormously in the past 20 years, driven by the need to find organized macroporous ...
Tópico(s): 3D Printing in Biomedical Research
2013 - Mary Ann Liebert, Inc. | Tissue Engineering Part B Reviews
Produção Nacional
Revisado por pares
Diane Schmidt, Brett E Pickett, Daría Elena Camacho, Guillermo Comach, Kris Xhaja, Niall J. Lennon, K. Rizzolo, Norma de Bosch, Aniuska Becerra, Maurício Lacerda Nogueira, Adriano Mondini, E.V. da Silva, Pedro Fernando da Costa Vasconcelos, Jorge L. Muñoz‐Jordán, Gilberto A. Santiago, Raquel E. Ocazionez, Lee Gehrke, Elliot J. Lefkowitz, Susan J. Birren, Matthew R. Henn, Irene Bosch,
Tópico(s): Viral Infections and Vectors
2011 - Elsevier BV | Infection Genetics and Evolution
Pedro V. Vasconcelos, Jorge Lino Alves, A.G. Magalhães, Rui Neto,
Epoxy-based composites moulds are frequently used for wax and polymer materials injection. Tri-phase materials, composed by an epoxy resin, aluminium particles and milled fibres, were produced, with mechanical and thermal performances better than the single materials, increasing the competitiveness of the epoxy rapid tooling processes. Charpy impact tests were employed to obtain a qualitative indication of the composites toughness. The electronic instrumentation of these tests allows a more accurate ...
Tópico(s): Tribology and Wear Analysis
2005 - Elsevier BV | Journal of Materials Processing Technology
Pedro V. Vasconcelos, Jorge Lino Alves, A.P.M. Baptista, Rui Neto,
Epoxy resin composites are frequently applied in moulds manufactured with rapid tooling technologies that are used for wax and polymer materials injection. With the propose of enlarging the application field of the polymer matrix systems, it is fundamental to select adequate dispersed phases and analyse their influence on the composite properties in order to reinforce the polymer matrix and tailor the properties according to the tools specifications. Thermal conductivity and wear resistance are ...
Tópico(s): Fiber-reinforced polymer composites
2005 - Elsevier BV | Wear
Mário Lima, Luboš Hes, Rosa Vasconcelos, Jorge Martins,
Abstract A new method to characterise the coefficient of friction of textile fabrics is proposed. The principle is based on the dry clutch, where an annular shaped flat upper body that is kept still, rubs against a lower flat surface, which rotates around a vertical axis at a constant angular velocity. Friction coefficient between the two contacting surfaces is then proportional to the level of the dragging torque between them, measured by means of a precision reaction torque sensor. Contact pressure ...
Tópico(s): Advanced Materials and Mechanics
2005 - De Gruyter Open | Autex Research Journal
Sandra Costa, Daniela Pinto, Antόnio Morais, André Vasconcelos, Jorge Oliveira, Carlos Lopes, Rui Medeiros,
Epidemiologic studies have suggested that environmental factors and diet are important risk factors in the pathogenesis of prostate cancer. The N-acetyltransferases (NAT) are important enzymes in activation and inactivation of various carcinogens, including those found in well-cooked meat and cigarette smoke.We analyzed DNA samples from 146 prostate cancer patients and 174 healthy men. We used PCR-RFLP method to analyze NAT 1 and NAT 2 polymorphisms.We did not find statistically significant differences ...
Tópico(s): Carcinogens and Genotoxicity Assessment
2005 - Wiley | The Prostate
Produção Nacional
Revisado por pares
Renato L. Santos, Cristiana Fortini, Andrea Frozino Ribeiro, A.C. Vasconcelos, Jorge L. Pesquero, Suelene Coelho, Rogéria Serákides, Salomé Reis,
Bovine growth hormone has been used in dairy cattle to increase milk production,but it also increases the twin parturition rate. This effect is mediated by insulin-like growth factor-I (IGF-I), which prevents follicular atresia by hindering apoptosis of granulosa cells. The action of GH and IGF-I on testicular function remains unclear. The goal of this study, therefore, was to verify the effects of short-term administration of GH and induced IGF-I release on the number of testicular germ cells, testicular ...
Tópico(s): Reproductive Biology and Fertility
1999 - Elsevier BV | Theriogenology
Produção Nacional
Revisado por pares
Pedro Fernando da Costa Vasconcelos, Jorge Fernando Soares Travassos da Rosa, Amélia Paes de Andrade Travassos da Rosa, Nicolas Dégallier, Francisco de Paula Pinheiro, Gregório Carrera Sá Filho,
Os autores revêem os aspectos ecoepidemiológicos apresentados pelos virus da encefalite de St. Louis (SLE), encefalites equinas Leste (EEE), Oeste (WEE) e Venezuelana [subtipos III, Mucambo (MUC) e IV, Pixuna (PIX)], decorrentes dos estudos realizados em diversas áreas da Região Amazônica brasileira, especialmente ao longo das rodovias e projetos de desenvolvimento. Esses vírus são amplamente distribuídos na Amazônia e pelo menos quatro deles, EEE, WEE, MUC e SLE já demonstraram ser patógenos do homem. ...
Tópico(s): Vector-Borne Animal Diseases
1991 - UNIVERSIDADE DE SÃO PAULO | Revista do Instituto de Medicina Tropical de São Paulo
Produção Nacional
Revisado por pares
Pedro Fernando da Costa Vasconcelos, Jorge Fernando Soares Travassos da Rosa, Sueli Corrêa Guerreiro, Nicolas Dégallier, Elizabeth Salbé Travassos da Rosa, Amélia Paes de Andrade Travassos da Rosa,
Os autores descrevem a ocorrência de epidemias causadas pelo vírus Oropouche (ORO) nos Estados do Maranhão (MA) e Goiás (GO) em 1988. 36 amostras de vírus foram obtidas a partir da inoculação do sangue de 120 pacientes em camundongos recém nascidos. A doença foi caracterizada por febre, cefaléia, dores musculares, articulares, fotofobia, dor retro ocular, náuseas e tontura. 128 das 197 pessoas examinadas em Porto Franco, MA, tinham anticorpos inibidores da hemaglutinação (IH) para o agente e, em 106 ...
Tópico(s): Mosquito-borne diseases and control
1989 - UNIVERSIDADE DE SÃO PAULO | Revista do Instituto de Medicina Tropical de São Paulo
Jorge Vasconcelos, Sebastião S. Alves, Jorge Barata,
Tópico(s): Advanced Control Systems Optimization
1995 - Elsevier BV | Chemical Engineering Science
Produção Nacional
Revisado por pares
Matheus Amador Nicchio, Fabrizio Balsamo, Francesca Cifelli, Francisco C.C. Nogueira, Luca Aldega, Francisco H.R. Bezerra, David L. Vasconcelos, Jorge André Braz de Souza,
Abstract We constrained the tectonic evolution of the intracratonic Cretaceous Rio do Peixe Basin (RPB) in NE Brazil, combining structural and Anisotropy of Magnetic Susceptibility (AMS) data. We analyzed the structural features of four sites along two major faults bordering the basin, the NE‐striking Portalegre Fault and the E‐W‐striking Malta Fault. AMS data from 42 sites in the syn‐rift sandstone suggest two stretching directions driving the opening of the RPB. The early syn‐rift phase I resulted ...
Tópico(s): Geological formations and processes
2022 - Wiley | Tectonics
Mário Lima, Luboš Hes, Rosa Vasconcelos, Jorge Martins,
A new method to characterise the coefficient of friction of textile fabrics is proposed. The principle is based on the dry clutch, where an annular shaped flat upper body that is kept still, rubs against a lower flat surface, which rotates around a vertical axis at a constant angular velocity. Friction coefficient between the two contacting surfaces is then proportional to the level of the dragging torque between them, measured by means of a precision reaction torque sensor. Contact pressure is ...
Tópico(s): Mechanical Engineering and Vibrations Research
2005 - | Journal of Textile Engineering
... 10.1002/9781118885154.dipl0141Phillip M. Hannam, Vítor V. Vasconcelos, Simon A. Levin, Jorge M. Pacheco Incomplete cooperation and co-benefits: deepening ... org/10.1017/S1474745616000410Phillip M Hannam, VVtor V Vasconcelos, Simon Asher Levin, Jorge M Pacheco Incomplete Cooperation and Co-Benefits: Deepening ...
Tópico(s): Climate Change Policy and Economics
1969 - University of Chicago Press | The Journal of Law and Economics
Stefan Uebermasser, Christoph Groiß, Alfred Einfalt, Nicolas Thie, Maria Vasconcelos, Jorge Helguero, Hannu Laaksonen, Petri Hovila,
The massive development and implementation of small- and medium-scale generation units within the distribution grids result in novel needs and options for ancillary services. The project DeCAS develops solutions for the coordinated activation of ancillary cross-voltage-level services considering the different objective functions of individual voltage levels. This study aims to analyse, define and describe common requirements focusing on a technical, stakeholder and market perspective.
Tópico(s): Smart Grid Energy Management
2017 - | CIRED - Open Access Proceedings Journal
Pedro V. Vasconcelos, Jorge Lino Alves, Rui Neto,
Tópico(s): Manufacturing Process and Optimization
2002 - Trans Tech Publications | Key engineering materials
Produção Nacional
Revisado por pares
Francisco Assis Nascimento Pereira, Josianne Rocha Barboza, Cleydlenne Costa Vasconcelos, Alberto Jorge Oliveira Lopes, Maria Nilce de Sousa Ribeiro,
Cancer is one of the major maladies affecting humankind and remains one of the leading causes of death worldwide. The investigation of the biological activities of stingless bee products, especially propolis and geopropolis, has revealed promising therapeutic properties, especially in the research on new antineoplastic agents. This literature review of preclinical trials, involving biological assays of antitumor activity and identification of the chemical composition of propolis and geopropolis ...
Tópico(s): Healthcare and Venom Research
2021 - Multidisciplinary Digital Publishing Institute | Pharmaceuticals
Produção Nacional
Revisado por pares
Cleydlenne Costa Vasconcelos, Alberto Jorge Oliveira Lopes, Emilly de Jesus Garcia Ataide, Kevin Waquim Pessoa Carvalho, Maria Fernanda Freitas de Brito, Marineide Sodré Rodrigues, Sebastião Vieira de Morais, Gyl Eanes Barros Silva, Cláudia Quintino da Rocha, João Batista Santos Garcia, Maria do Socorro de Sousa Cartágenes,
Tópico(s): Protein Hydrolysis and Bioactive Peptides
2021 - Springer Nature | Inflammopharmacology
Produção Nacional
Revisado por pares
Felipe Kenzo Yadoya Santos, Ronald LG Flumignan, Libnah Leal Areias, Anna Karina Paiva Sarpe, Fabio Cabral de Freitas Amaral, Rafael Bernardes de Ávila, Vladimir Vasconcelos, Henrique Jorge Guedes Neto, Jorge Eduardo de Amorim, Luís Carlos Uta Nakano,
Abstract Background: Since the first description of the central venous catheter (CVC) in 1952, it has been used for the rapid administration of drugs, chemotherapy, as a route for nutritional support, blood components, monitoring patients, or combinations of these. When CVC is used in the traditional routes (eg, subclavian, jugular, and femoral veins), the complication rates range up to 15% and are mainly due to mechanical dysfunction, infection, and thrombosis. The peripherally inserted central catheter ( ...
Tópico(s): Acute Kidney Injury Research
2020 - Wolters Kluwer | Medicine