Produção Nacional
Revisado por pares
Fernando Koch, Marcos Dias de Assunção, Marco A. S. Netto,
Educational institutions have become highly dependent on information technology to support the delivery of personalised material, digital content, interactive classes, and others. These institutions are progressively transitioning into Cloud Computing technology to shift costs from locally-hosted services to a “renting model” often with higher availability, elasticity, and resilience. However, in order to properly explore the cost benefits of the pay-as-you-go business model, there is a need for ...
Tópico(s): Caching and Content Delivery
2012 - Springer Science+Business Media | Lecture notes in computer science
Produção Nacional
Revisado por pares
Hernane da Silva Barud, Rosana Maria Nascimento de Assunção, Marco António Utrera Martines, Jeannette Dexpert‐Ghys, Rodrigo Fernando Costa Marques, Younès Messaddeq, Sidney J. L. Ribeiro,
Tópico(s): Aerogels and thermal insulation
2007 - Springer Science+Business Media | Journal of Sol-Gel Science and Technology
Produção Nacional
Revisado por pares
Édisson Morgado, P.M. Jardim, Bojan A. Marinković, Fernando Cosme Rizzo Assunção, Marco A.S. de Abreu, José Luiz Zotin, Antônio S. Araújo,
H-trititanate nanotubes obtained by alkali hydrothermal treatment of TiO2 followed by proton exchange were compared to their bulk H2Ti3O7 counterpart with respect to their thermally induced structural transformation paths. As-synthesized and heat-treated samples were characterized by XRD, TEM/SAED, DSC and spectroscopy techniques, indicating that H2Ti3O7 nanotubes showed the same sequence of structural transformations as their bulk counterpart obtained by conventional solid state reaction. Nanostructured ...
Tópico(s): Advancements in Battery Materials
2007 - IOP Publishing | Nanotechnology
Produção Nacional
Revisado por pares
Fernando Augusto Lopes de Assunção, Marcos von Sperling,
This study aimed at determining the influence of ammonia volatilization on nitrogen removal in polishing (maturation) ponds treating sanitary effluent from upflow anaerobic sludge blanket (UASB) reactors in the city of Belo Horizonte, Brazil. An apparatus for the capture and absorption of volatilized ammonia in three polishing ponds in series was installed. Volatilized ammonia was captured by a chamber on the surface of the ponds and dissolved in boric acid solution, in order to estimate the amount ...
Tópico(s): Wastewater Treatment and Reuse
2012 - Pergamon Press | Water Science & Technology
Produção Nacional
Revisado por pares
Daniele Alves Ferreira, Robério Costa da Silva, João Carlos da Costa Assunção, Marcos Carlos de Mattos, Telma L. G. Lemos, Francisco José Queiroz Monte,
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2012 - Springer Science+Business Media | Biotechnology and Bioprocess Engineering
Produção Nacional
Revisado por pares
Vanessa Kiyomi Ota, Ary Gadelha, Idaiane Assunção, Marcos Santoro, Denise Maria Christofolini, Fernanda T. Bellucco, Airton F. Santos-Filho, Gustavo L. Ottoni, Diogo R. Lara, Jair de Jesus Mari, Maria Isabel Melaragno, Marı́lia de Arruda Cardoso Smith, Rodrigo A. Bressan, Síntia Belangero, Andrea Parolin Jackowski,
ZDHHC8 rs175174 polymorphism is located in 22q11.2 region and its role in brain volume has not been fully addressed. A total of 282 schizophrenia patients and 379 controls were genotyped. A sample of 138 patients underwent brain MRI scan. No association was found between schizophrenia and genotypes. Nevertheless, GG-genotype carriers presented gray matter volume (GMV) reduction in frontal lobe compared to A-allele carriers, and cerebellar hemispheres GMV reductions were found in G-allele carriers ...
Tópico(s): Coronary Artery Anomalies
2013 - Elsevier BV | Schizophrenia Research
Produção Nacional
Revisado por pares
Carlos Gustavo Garcia, Suzana Assad Kahn, Luiz Henrique Geraldo, Igor Romano, Ivan Domith, Deborah Christinne Lima e Silva, Fernando dos Santos Assunção, Marcos José Ferreira, Camila C. Portugal, Jorge Marcondes de Souza, Luciana Romão, Annibal Duarte Pereira Netto, Flávia Regina Souza Lima, Marcelo Cossenza,
Tópico(s): Adenosine and Purinergic Signaling
2018 - Springer Science+Business Media | Molecular Neurobiology
Produção Nacional
Revisado por pares
Shirlei Almeida Assunção, Marcos Gervásio Pereira, Jean Sérgio Rosset, Ricardo Luís Louro Berbara, Andrés Calderín García,
Carbon (C) stabilization and the quality of soil organic matter (SOM) in a tropical climate are key aspects regulating carbon dioxide emissions and maintaining the C cycle. Soil management influences the accumulation of C, regulating the balance between mineralization and/or the humification of SOM. This study aimed to quantify inputs of different chemical forms of C into soil and to evaluate the structural chemical characteristics of humified SOM. Four management systems were established: Forest ( ...
Tópico(s): Crop Yield and Soil Fertility
2018 - Elsevier BV | The Science of The Total Environment
Produção Nacional
Revisado por pares
Eduarda Gomes Bogéa, Ana Karina Teixeira da Cunha França, Maylla Luanna Barbosa Martins Bragança, Juliana dos Santos Vaz, Maria Cecília Formoso Assunção, Marco Antônio Barbieri, Heloísa Bettiol, Antônio Augusto Moura da Silva,
The present study was conducted to evaluate the validity of the Food Frequency Questionnaire (FFQ) used in the RPS Birth Cohort Consortium (Ribeirão Preto, Pelotas, and São Luís) to assess dietary intake of adolescents from São Luís, Maranhão. The research was developed with 152 adolescents aged 18 and 19 years. For the validation of the FFQ, the average of three 24-hour recalls (24HRs) was used as the reference method. The mean and standard deviation of energy and nutrient intake extracted from the ...
Tópico(s): Consumer Attitudes and Food Labeling
2020 - Associação Brasileira de Divulgação Científica | Brazilian Journal of Medical and Biological Research
Produção Nacional
Revisado por pares
Rondinele Alberto dos Reis Ferreira, Carla da Silva Meireles, Rosana Maria Nascimento de Assunção, Marcos A.S. Barrozo, Ricardo Reis Soares,
The objective of this work was to evaluate the influence of the oxygen percentage, heating rate, and total gas flow variables in the pyrolysis process of sugarcane straw through thermogravimetric (TG) and differential scanning calorimetry (DSC) analyses. The experimental conditions of oxygen percentage, heating rate, and total gas flow were optimized using the design of experiments and canonical analysis. The investigated conditions show that to optimize the whole pyrolysis process, the best values ...
Tópico(s): Energy and Environment Impacts
2020 - Elsevier BV | Biomass and Bioenergy
Produção Nacional
Revisado por pares
Moacir Fernandes Ferreira Júnior, Elaine Angélica Ribeiro Mundim, Guimes Rodrigues Filho, Carla da Silva Meireles, Daniel Alves Cerqueira, Rosana Maria Nascimento de Assunção, Marcos Marcolin, Mára Zeni,
Cellulose, obtained both from sugarcane bagasse and mango seeds, was used for synthesizing cellulose acetate in order to produce asymmetric membranes. These were compared to membranes of commercial cellulose acetate (Rhodia). All produced membranes were asymmetric, characterized by the presence of a dense skin and a porous support. Differences regarding the morphology of the surfaces as well as of the porous support can be noticed. Scanning Electron Microscopy (SEM) showed that the morphology of the ...
Tópico(s): Polysaccharides Composition and Applications
2010 - Springer Science+Business Media | Polymer Bulletin
Produção Nacional
Revisado por pares
Ronaldo Lopes Oliveira, Diêni Maria Pereira Assunção, Marco Aurélio Alves de Freitas Barbosa, Márcio Machado Ladeira, Manoel Messias Pereira da Silva, Alessandra Gimenez Mascarenhas, Marília Viviane Snel-Oliveira, Renata Lopes de Oliveira,
Este trabalho foi realizado com o objetivo de avaliar os efeitos de diferentes fontes de lipídeos sobre o consumo, a digestibilidade e o N-uréico no plasma de novilhos bubalinos terminados em confinamento. Utilizaram-se 13 animais castrados Murrah (297±9 kg de PV) alimentados com três diferentes dietas (tratamentos): sem lipídeo adicional; óleo de soja; e grão de soja integral. A duração do experimento foi de 84 dias, divididos em três períodos de coleta, cada um com 28 dias. Nos seis últimos dias ...
Tópico(s): Aquaculture Nutrition and Growth
2007 - Sociedade Brasileira de Zootecnia | Revista Brasileira de Zootecnia
Produção Nacional
Revisado por pares
Fernando Augusto Lopes de Assunção, Marcos von Sperling,
This paper presents an evaluation of the influence of pH and temperature on nitrogen removal in a series of three shallow maturation ponds serving as post-treatment of upflow anaerobic sludge blanket (UASB) reactor effluent (approximately 200 population equivalent). Monitoring was from January 2007 to May 2009. Throughout this period, the ponds maintained relatively stable operational conditions in terms of depth and hydraulic retention time, thus enabling the evaluation of the influence of variations ...
Tópico(s): Water Quality Monitoring Technologies
2013 - Pergamon Press | Water Science & Technology
Marco Assunção, Maria João Santos‐Marques, Félix Carvalho, Nikolay Lukoyanov, José Paulo Andrade,
The hippocampal formation undergoes considerable structural and functional modifications during aging and oxidative stress emerges as a key player in the process. In the present study, we investigated whether prolonged consumption of green tea (GT), which contains large amounts of polyphenols, could interfere with age-related changes in this brain region using biochemical, morphological and behavioral approaches. Ten male Wistar rats aged 19 months were fed with GT since 12 months of age and results ...
Tópico(s): Neurological Disease Mechanisms and Treatments
2009 - Elsevier BV | Neurobiology of Aging
Marco Assunção, Maria João Santos‐Marques, Rosário Monteiro, Isabel Azevedo, José Paulo Andrade, Félix Carvalho, Maria João Martins,
Ethanol consumption may be deleterious to the liver. However, alcoholic beverages contain, besides ethanol (EtOH), complex chemical mixtures that can modify EtOH's adverse effects. Red wine (RW) is rich in polyphenolic antioxidants, often reported as hepatoprotective agents. This study aimed to investigate the effects of 6 months of RW ingestion on hepatic oxidative stress and inflammation. Six-month-old Wistar rats were treated with RW or EtOH; controls were pair-fed. EtOH increased 8-hydroxy-2′- ...
Tópico(s): Genomics, phytochemicals, and oxidative stress
2009 - American Chemical Society | Journal of Agricultural and Food Chemistry
Rosário Monteiro, Marco Assunção, José Paulo Andrade, Delminda Neves, Conceição Calhau, Isabel Azevedo,
Green tea (GT) and its components have been shown to possess antiobesity properties and the corresponding mechanisms of action are being investigated, given the epidemic proportions of obesity incidence. In the current work, we used 12-mo-old male Wistar rats to test the effect of 6 mo of treatment with GT as the sole drinking beverage (52.8 +/- 6.4 mL/d) on adipose tissue (AT). AT aromatase expression was determined by Western blotting, plasma concentrations of 17beta-estradiol and testosterone were determined ...
Tópico(s): Adipokines, Inflammation, and Metabolic Diseases
2008 - Elsevier BV | Journal of Nutrition
Marco Assunção, Maria João Santos‐Marques, Félix Carvalho, José Paulo Andrade,
We previously found that prolonged consumption of green tea (GT), a rich source of antioxidant polyphenols, protected proteins and lipids against oxidation and reduced lipofuscin deposition in the rat hippocampal formation as well as improving spatial memory during aging. In this work, we sought to investigate whether GT treatment could interfere with age-related changes in redox status and cellular signaling systems related to oxidative stress and survival in the same brain region. To address this ...
Tópico(s): Tea Polyphenols and Effects
2010 - Elsevier BV | Free Radical Biology and Medicine
Armando Cardoso, Marco Assunção, José Paulo Andrade, Pedro A. Pereira, M. Dulce Madeira, María José Sá, Nikolay Lukoyanov,
Abstract The goal of this study was to answer the question of whether repeated administration of electroconvulsive shock (ECS) seizures causes structural changes in the entorhinal‐dentate projection system, whose neurons are known to be particularly vulnerable to seizure activity. Adult rats were administered six ECS seizures, the first five of which were spaced by 24‐hr intervals, whereas the last two were only 2 hr apart. Stereological approaches were employed to compare the total neuronal and ...
Tópico(s): Neurotransmitter Receptor Influence on Behavior
2007 - Wiley | Journal of Neuroscience Research
Marco Assunção, Maria João Santos‐Marques, Víctor de Freitas, Félix Carvalho, José Paulo Andrade, Nikolay Lukoyanov, María José Sá,
Chronic ethanol consumption increases oxidative stress, which accounts for the striking neurological changes seen in this condition. Notwithstanding, there is well-documented evidence that polyphenols, present in grape skin and seeds, exhibit a strong antioxidant activity. As red wine is rich in polyphenols, the aim of the present work was to evaluate their putative protective effects on the hippocampal formation by applying biochemical, morphological and behavioral approaches. Six-month old male ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2007 - Elsevier BV | Neuroscience
Marco Assunção, Víctor de Freitas, María José Sá,
Tópico(s): Antioxidant Activity and Oxidative Stress
2006 - Elsevier BV | Brain Research
José Paulo Andrade, Rui Mesquita, Marco Assunção, Pedro A. Pereira,
We have previously found that the dendritic trees of dentate gyrus granule cells are selectively vulnerable to food restriction but there are reorganizational morphological events that minimize functional impairments. As the neurotrophin brain-derived neurotrophic factor (BDNF) and the cognate receptor tyrosine kinase B (TrkB) are involved in the maintenance of the structure of dendritic trees, we thought of interest to verify if there are alterations in its synthesis and expression in granule cells. ...
Tópico(s): Adipose Tissue and Metabolism
2006 - Elsevier BV | Neuroscience Letters
José Paulo Andrade, Marco Assunção,
Dietary antioxidant compounds, due to their pivotal role in the modulation of cellular redox mechanisms, are gaining attention of researchers in the field of brain aging and related degenerative diseases. In this perspective, green tea (GT) can be an excellent resource, as it contains large amounts of brain-accessible polyphenols. Many of these compounds are monomeric catechins, which have been shown to exert antioxidant effects, acting directly as radical scavengers or metal-chelators. In the current ...
Tópico(s): Tea Polyphenols and Effects
2012 - Bentham Science Publishers | Current Pharmaceutical Design
Produção Nacional
Linnyer B. Ruiz, Thaís Gleice Martins Braga, F.A. Silva, Helen P. Assunção, José Marcos S. Nogueira, Antônio A. F. Loureiro,
During the last decade, there was a great technological advance in the development of smart sensors, low-power processors, and wireless communication protocols that when put together create a wireless sensor network (WSN). Smart, autonomous, and self-aware: that is the ultimate vision for WSNs. The success of this vision depends fundamentally on the self-management solutions. This work deals with this challenge: to provide a self-management solution for a WSN that monitors temperature and evaluates ...
Tópico(s): Context-Aware Activity Recognition Systems
2005 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Jorge Rodrigues, Marco Assunção, Nikolay Lukoyanov, Armando Cardoso, Félix Carvalho, José Paulo Andrade,
Green tea (GT) displays strong anti-oxidant and anti-inflammatory properties mostly attributed to (-)-epigallocatechin-3-gallate (EGCG), while experiments focusing on other catechins are scarce. With the present work we intended to analyze the neuroprotective effects of prolonged consumption of a GT extract (GTE) rich in catechins but poor in EGCG and other GT bioactive components that could also afford benefit. The endpoints evaluated were aging-induced biochemical and morphological changes in the rat ...
Tópico(s): Neuroinflammation and Neurodegeneration Mechanisms
2013 - Elsevier BV | Behavioural Brain Research
Marco Assunção, Luísa Louro Martins, Miguel P. Mourato, Margarida Baleiras-Couto,
Tópico(s): Insect and Pesticide Research
2015 - Springer Science+Business Media | World Journal of Microbiology and Biotechnology
Produção Nacional
Revisado por pares
Nuno R. Faria, Moritz U. G. Kraemer, Sarah C. Hill, Jaqueline Góes de Jesus, Renato Santana Aguiar, Felipe Campos de Melo Iani, Joilson Xavier, Josh Quick, Louis du Plessis, Simon Dellicour, Julien Thézé, Rodrigo Dias de Oliveira Carvalho, Guy Baele, Chieh‐Hsi Wu, Paola Paz Silveira, Mônica Arruda, Mariza Pereira, G. C. Pereira, José Lourenço, Uri Obolski, Leandro Abade, Tetyana I. Vasylyeva, Marta Giovanetti, Dong‐Keun Yi, D. J. Weiss, William Wint, Freya M. Shearer, Sebastian Funk, Birgit Nikolay, Vagner Fonseca, Talita Adelino, Marluce Aparecida Assunção Oliveira, Marcos Vinícius Ferreira Silva, Lívia Sacchetto, P. O. Figueiredo, Izabela Maurício de Rezende, Érica Munhoz de Mello, Rana Said, D. A. Santos, Marcela Lencine Ferraz, Mariana Gontijo de Brito, L. F. Santana, Mariane Talon de Menezes, Rodrigo Brindeiro, Amílcar Tanuri, Fabiana Cristina Pereira dos Santos, Mariana Sequetin Cunha, Juliana Silva Nogueira, Iray Maria Rocco, Antônio Charlys da Costa, Shirley Vasconcelos Komninakis, Vasco Azevedo, Alexandre Chieppe, Eliane Saraiva Machado de Araújo, Marcos César Lima de Mendonça, C. C. dos Santos, Chagas Dos Santos, A. M. Mares-Guia, Rita Maria Ribeiro Nogueira, Patrícia Carvalho de Sequeira, Ricardo Gadelha de Abreu, M. H. O. Garcia, André Luiz de Abreu, Osnei Okumoto, Erna Geessien Kroon, Carlos F. Campelo de Albuquerque, Kuiama Lewandowski, Steven T. Pullan, Miles W. Carroll, Túlio de Oliveira, Éster Cerdeira Sabino, Renato Pereira de Souza, Marc A. Suchard, Philippe Lemey, G. S. Trindade, Betânia Paiva Drumond, Ana María Bispo de Filippis, Nicholas J. Loman, Simon Cauchemez, Luíz Carlos Júnior Alcântara, Oliver G. Pybus,
The yellow fever virus (YFV) epidemic in Brazil is the largest in decades. The recent discovery of YFV in Brazilian Aedes species mosquitos highlights a need to monitor the risk of reestablishment of urban YFV transmission in the Americas. We use a suite of epidemiological, spatial, and genomic approaches to characterize YFV transmission. We show that the age and sex distribution of human cases is characteristic of sylvatic transmission. Analysis of YFV cases combined with genomes generated locally ...
Tópico(s): Insect symbiosis and bacterial influences
2018 - American Association for the Advancement of Science | Science
Produção Nacional
Revisado por pares
Fernando Koch, Marcos Dias de Assunção, Carlos Cardonha, Marco A. S. Netto,
There is a growing interest around the utilisation of cloud computing in education. As organisations involved in the area typically face severe budget restrictions, there is a need for cost optimisation mechanisms that explore unique features of digital learning environments. In this work, we introduce a method based on Maximum Likelihood Estimation that considers heterogeneity of IT infrastructure in order to devise resource allocation plans that maximise platform utilisation for educational environments. ...
Tópico(s): Online Learning and Analytics
2015 - Elsevier BV | Future Generation Computer Systems
Marcos Dias de Assunção, Carlos Cardonha, Marco A. S. Netto, Renato L. F. Cunha,
An important feature of most cloud computing solutions is auto-scaling, an operation that enables dynamic changes on resource capacity. Auto-scaling algorithms generally take into account aspects such as system load and response time to determine when and by how much a resource pool capacity should be extended or shrunk. In this article, we propose a scheduling algorithm and auto-scaling triggering strategies that explore user patience, a metric that estimates the perception end-users have from ...
Tópico(s): Distributed and Parallel Computing Systems
2015 - Elsevier BV | Future Generation Computer Systems
Delminda Neves, Marco Assunção, Franklim Marques, José Paulo Andrade, Henrique Almeida,
Erectile dysfunction (ED) is a highly prevalent disease affecting millions of men worldwide with a tendency for widespread increase. ED is now considered an early manifestation of atherosclerosis and, consequently, a precursor of systemic vascular disease. Atherosclerosis and ED share potentially modifiable risk factors, as smoking or high-fat food intake, but it is unclear how regular consumption of anti-oxidant rich drinks, which exhibit recognised anti-atherosclerotic features, affects ED progression. ...
Tópico(s): Menopause: Health Impacts and Treatments
2008 - Springer Science+Business Media | AGE
Produção Nacional
Revisado por pares
Hugo Ramalho Sarmento, Fernanda Campos, R.S. Sousa, João Paulo Barros Machado, Rodrigo Othávio de Assunção e Souza, Marco Antônıo Bottıno, Mutlu Özcan,
This study evaluated the influence of air-particle abrasion protocols on the surface roughness (SR) of zirconia and the shear bond strength (SBS) of dual-polymerized resin cement to this ceramic.Sintered zirconia blocks (n = 115) (Lava, 3M ESPE) were embedded in acrylic resin and polished. The specimens were divided according to the 'particle type' (Al: 110 µm Al2O3; Si: 110 µm SiO2) and 'pressure' factors (2.5 or 3.5 bar) (n = 3 per group): (a) Control (no air-abrasion); (b) Al2.5; (c) Si2.5; (d) Al3.5; (e) Si3.5. ...
Tópico(s): Dental Research and COVID-19
2013 - Informa | Acta Odontologica Scandinavica