... do neopentecostalismo no campo religioso afro-brasileiro by Vagner Gonçalves da Silva(org.) Roger Sansi, Roger Sansi Goldsmiths College, University ...
Tópico(s): Food, Nutrition, and Cultural Practices
2008 - Wiley | The Journal of Latin American and Caribbean Anthropology
Produção Nacional
Revisado por pares
Uilian José Dreyer, Felipe Mezzadri, Guilherme Dutra, Thiago da Silva, Carlos Alberto Bavastri, Erlon Vagner da Silva, Cícero Martelli, Jean Carlos Cardozo da Silva,
In this paper, a new multiparametric optical fiber transducer is presented for simultaneous temperature and vibration sensing in hydroelectric high-power generators. The optical transducer holds three multiplexed fiber Bragg gratings (FBGs) as the sensing elements. In the transducer, each FBG can simultaneously measure temperature and vibration independent of the other FBGs. With a temperature characterization, it is possible to determine the thermal stability (1.5 °C) over the test duration and the ...
Tópico(s): Advanced Fiber Laser Technologies
2017 - IEEE Sensors Council | IEEE Sensors Journal
Produção Nacional
Revisado por pares
Mônica Freiman de Souza Ramos, Sérgio da Silva Monteiro, Vagner Pereira da Silva, Marcos J. Nakamura, Antônio Carlos Siani,
Abstract The leaf oils from five Myrtaceae species growing in the restinga forest of Carapebus, on the southeastern Brazilian coast, were obtained by hydrodistillation and analyzed by GC/MS. Eugenia punicifolia oil contained only sesquiterpenes, with predominance of β-elemene (22.1%) followed by β-caryophyllene (8.5%) and components of the selinane (24.8%) and cadinane (14.0%) skeletal-types. Eugenia sulcata oil had the highest content of monoterpenes, among which α-pinene (12.2%), β-pinene (10.8%) and ...
Tópico(s): Sesquiterpenes and Asteraceae Studies
2010 - Taylor & Francis | Journal of Essential Oil Research
Produção Nacional
Revisado por pares
João Paulo Bazzo, Felipe Mezzadri, Erlon Vagner da Silva, Daniel Rodrigues Pipa, Cícero Martelli, Jean Carlos Cardozo da Silva,
This paper presents a new method for thermal imaging of hydroelectric generators stators. The method is based on distributed temperature optical fiber sensing using Raman scattering. The thermal image is generated by combining the information of temperature and the spatial position of the sensor with the 3-D model of the structure. Regarding the use of conventional sensors, such as resistance temperature detector or PT100, the main advantage is the possibility to identify temperature variations ...
Tópico(s): Advanced Fiber Optic Sensors
2015 - IEEE Sensors Council | IEEE Sensors Journal
Produção Nacional
Revisado por pares
João Paulo Bazzo, Daniel Rodrigues Pipa, Cícero Martelli, Erlon Vagner da Silva, Jean Carlos Cardozo da Silva,
Traditional Raman distributed optical sensor (DTS) exhibits a low-pass characteristic that causes sharp temperature changes to be over smoothed. This behavior can be modeled as the convolution of the real temperature profile with the DTS impulse response. This paper presents a deconvolution algorithm developed to improve the spatial resolution of a Raman DTS system. The algorithm is based on a linear DTS model and total variation regularization. The main advantage is the ability to correctly reconstruct ...
Tópico(s): Advanced Fiber Optic Sensors
2016 - IEEE Sensors Council | IEEE Sensors Journal
Produção Nacional
Revisado por pares
Vagner da Silva Braga, Duna Joanol da Silveira Mastrantonio, Jorge Alberto Vieira Costa, Michele Greque de Morais,
This study focused on verifying if production of Spirulina biomass with high carbohydrate content is stimulated by reduced supply of nitrogen associated to addition of NaHCO3 or CO2 at different flow rates and times of injection. For this purpose, addition of 0.25 g L−1 of NaNO3 allowed Spirulina to accumulate up to 49.3% (w w−1) of carbohydrates with the highest amount of CO2 (0.3 vvm injected for 5 min). This value reached 59.1% (w w−1) when NaHCO3 was the carbon source. Meanwhile, biomass concentration ...
Tópico(s): Biofuel production and bioconversion
2018 - Elsevier BV | Bioresource Technology
Produção Nacional
Revisado por pares
Jorge Alberto Vieira Costa, Juliana Botelho Moreira, Bárbara Franco Lucas, Vagner da Silva Braga, Ana Paula Aguiar Cassuriaga, Michele Greque de Morais,
Cyanobacteria are photosynthetic microorganisms known for their high protein content, essential fatty acids, vitamins, and minerals. Due to these features, cyanobacteria biomass can be used as a food supplement and in the production of biofuels, drugs, or biopolymers. Polyhydroxybutyrate (PHB) is a biopolymer belonging to the class of polyhydroxyalkanoates (PHAs) that are produced by heterotrophic bacteria and cyanobacteria. The biosynthesis of PHB by cyanobacteria occurs in the presence of a high ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2018 - Mary Ann Liebert, Inc. | Industrial Biotechnology
Produção Nacional
Revisado por pares
Vagner da Silva Braga, Juliana Botelho Moreira, Jorge Alberto Vieira Costa, Michele Greque de Morais,
This study focused on evaluating whether the injection of CO2, which is associated with the use of thermoelectric fly ashes and a reduced supply of nitrogen, affects the production of intracellular carbohydrates from Spirulina. For this purpose, the addition of 0.25 g L−1 of NaNO3, along with a 10% (v v−1) of CO2 injection, a flow rate of 0.3 vvm for 1 or 5 min, as well as 0, 120 and 160 ppm of fly ashes, was studied. The assays with 120 ppm of fly ashes presented the best kinetic parameters and ...
Tópico(s): Enzyme Catalysis and Immobilization
2018 - Elsevier BV | International Journal of Biological Macromolecules
Produção Nacional
Revisado por pares
Vagner da Silva Braga, Juliana Botelho Moreira, Jorge Alberto Vieira Costa, Michele Greque de Morais,
Fly ashes present several minerals that along with carbon dioxide (CO2) represent a promising nutrient source and an alternative to reduce environmental problems. Thus, the objective of this study was to investigate if CO2, thermoelectric fly ashes and reduction in nitrogen supply alters the production of macromolecules in Chlorella fusca LEB 111. For this purpose, 1.5 or 0.75 g L-1 of NaNO3, injection of 10% (v v-1) of CO2 as well as 0, 40 and 120 ppm of fly ashes were studied. The protein content ...
Tópico(s): Calcium Carbonate Crystallization and Inhibition
2019 - Elsevier BV | Bioresource Technology
Patrícia Souza Aparecida de, Nelson Venturin, Renato Luiz Macedo Grisi de, Maria Inês Alvarenga Nogueira, Vagner Silva Fernandes da,
This study was carried out on the margins of the Rio Grande at Monte Alegre Farm, in Ribeirao Vermelho county, Minas Gerais State, Brazil. The purpose of the...
Tópico(s): Agricultural and Food Sciences
2001 - UNIVERSIDADE FEDERAL DE LAVRAS | CERNE
Produção Nacional
Revisado por pares
Jonatas Batista Mattos, Kaique Brito Silva, Roberto José da Silva, Thiara Helena Mota Almeida, Hogana Sibilla Soares Póvoas, Paulo Vagner Ribeiro da Silva, Ingrid Matos de Araújo Góes, Irlanda da Silva Matos,
The objective of this study was to discuss how natural factors associated with poor land use policy and ineffective water resources management triggered a severe water crisis in a region with water plenty. The idea developed throughout the text is the result of a water shortage experience in a Brazilian medium-size city, related to recurrent climatological events, indicating the need for national and international water management agencies to elaborate policies, guidelines and mechanisms that take ...
Tópico(s): Hydrology and Watershed Management Studies
2018 - Elsevier BV | Land Use Policy
Produção Nacional
Revisado por pares
Vagner Fernandes da Silva, Nelson Venturin, Ary Teixeira de Oliveira‐Filho, R Luiz, Grisi de Macedo, Warley Augusto, C. da Mota Carvalho, Eduardo van den Berg,
A survey describing the physiognomic structure and the species composition and diver- sity of the tree community was carried out in a fragment of tropical semideciduous forest. The forest fragment, with an area of 57ha, is situated at 21°09'S of latitude and 44°50'W of longitude, in Ibitu- runa county, Minas Gerais state, Brazil. The surveys were carried out in two sectors of the fragment, Slope and Valley, where 26 (20×20m) plots were located. All trees with diameter at breast height
Tópico(s): Phytochemistry Medicinal Plant Applications
2003 - UNIVERSIDADE FEDERAL DE LAVRAS | CERNE
Produção Nacional
Revisado por pares
Vagner Pereira da Silva, Rodrigo Cardoso de Oliveira, Maria Raquel Figueiredo,
Abstract Introduction Limonoids are tetranortriterpenoids of considerable interest due to their structural varieties and biological activities, such as insecticidal, antibacterial, antifungal, antimalarial, anticancer and antiviral. They contain oxygen atoms that confer a moderate polarity and are responsible for the difficulties in their separation by traditional chromatographic methods. High‐speed countercurrent chromatography (HSCCC) is a versatile liquid–liquid separation technique, in which ...
Tópico(s): Natural product bioactivities and synthesis
2008 - Wiley | Phytochemical Analysis
Produção Nacional
Revisado por pares
F Ferraris, R.P. Rodrigues, Vagner Pereira da Silva, Raquel Figueiredo, Carmen Penido, Maria das Graças Henriques,
We have previously described the anti-allergic activities of a pooled fraction of tetranortriterpenoids (TNTPs) containing 6α-acetoxygedunin, 7-deacetoxy-7-oxogedunin, andirobin and methyl angolensate isolated from the seeds of Carapa guianensis. In the present study, we performed in vitro studies in order to elucidate the mechanisms by which TNTPs present their anti-allergic effects and to identify the bioactive compound(s) present in such fraction. Here, we show that in vitro incubation of eosinophils ...
Tópico(s): Neurobiology and Insect Physiology Research
2010 - Elsevier BV | International Immunopharmacology
Produção Nacional
Revisado por pares
Vagner Ricardo da Silva Fiúza, Rachel Ingrid Juliboni Cosendey, Edwards Frazão-Teixeira, Mónica Santı́n, Ronald Fayer, Francisco Carlos Rodrigues de Oliveira,
Feces were collected from 125 sheep between January and December 2007, on ten farms in the State of Rio de Janeiro, Brazil, and examined for the presence of Cryptosporidium. Ninety samples were collected from lambs 2 to 6 months of age, and 35 were from sheep over 12 months of age. All samples were subjected to molecular analysis by polymerase chain reaction (nested PCR) in two steps of the SSU rRNA. Two samples (1.6%) from the lambs were positive, and after sequencing were identified as Cryptosporidium ...
Tópico(s): Toxoplasma gondii Research Studies
2010 - Elsevier BV | Veterinary Parasitology
Produção Nacional
Revisado por pares
José Elias Mellek, Jeferson Dieckow, Vagner Lopes da Silva, Nerilde Favaretto, Volnei Pauletti, Fabiane Machado Vezzani, Jorge Luiz Moretti de Souza,
Application of liquid manure is often related to risks of nutrient losses by runoff and thus to the deleterious effects on water quality; but scarce is the information about the beneficial effects of liquid manure on soil physical conditions and its contribution in reducing runoff and nutrient losses in long-term, especially in no-tillage (NT) soils in tropics and subtropics. This study assessed the contributions of dairy liquid manure (DLM) on structural and hydraulic quality and on total organic ...
Tópico(s): Soil erosion and sediment transport
2010 - Elsevier BV | Soil and Tillage Research
Neste trabalho, pretendo analisar as relações de proximidade e antagonismo existentes entre o neopentecostalismo e as religiões afro-brasileiras, e suas conseqüências na transformação do imaginário social brasileiro construído a partir dos valores existentes nesses dois campos.
Tópico(s): Race, Identity, and Education in Brazil
2007 - UNIVERSIDADE FEDERAL DO RIO DE JANEIRO | Mana
Produção Nacional
Revisado por pares
Rosseval Galdino Leite, José Vagner Valente da Silva, Carlos Edwar de Carvalho Freitas,
A abundância e a distribuição mensal de larvas de peixes no Lago Catalão, situado próximo ao encontro dos rios Solimões e Negro, foram avaliadas entre os meses de janeiro e maio de 2001. As amostras foram coletadas com uma rede de ictioplâncton cônico-cilíndrica (350 µm de malha, Ø 0,3 m e 2 m de comprimento), com um fluxômetro acoplado na boca da rede para a obtenção do volume de água filtrado pela mesma. As variáveis categóricas consideradas foram: posição no lago (margem e centro), profundidade ( ...
Tópico(s): Fish Ecology and Management Studies
2006 - INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA | Acta Amazonica
Produção Nacional
Revisado por pares
Vagner Fernandes da Silva, Ary Teixeira de Oliveira Filho, Nelson Venturin, Warley Augusto Caldas Carvalho, João Bosco Vasconcelos Gomes,
Foram realizados inventários da comunidade arbórea, da topografia e dos solos de um fragmento de floresta semidecídua com o objetivo de avaliar os impactos de um incêndio ocorrido em 1999, na estrutura da comunidade arbórea e na composição e diversidade de espécies, bem como as relações entre a severidade do incêndio e variáveis do ambiente físico. O fragmento florestal, com área de 57 ha, está localizado nas coordenadas de 21º09'S e 44º50'W, no município de Ibituruna, MG. Os inventários foram conduzidos ...
Tópico(s): Forest ecology and management
2005 - Sociedade Botânica do Brasil | Acta Botanica Brasilica
Produção Nacional
Tópico(s): Religion and Society in Latin America
2005 - Emerald Publishing Limited | Revista USP
Produção Nacional
Revisado por pares
Vagner Ricardo da Silva Fiúza, Carlos Wilson Gomes Lopes, Francisco Carlos Rodrigues de Oliveira, Ronald Fayer, Mónica Santı́n,
Microsporidia are widely recognized as important human pathogens with Enterocytozoon bieneusi as the most common species infecting humans and animals, including cattle. Although Brazil has the second largest cattle herd in the world and it is the largest exporter of beef there are no data on the presence or impact of E. bieneusi on this important population. To fill this knowledge gap, fecal specimens were collected from 452 cattle from pre-weaned calves to adult cattle in the state of Rio de Janeiro. ...
Tópico(s): Amoebic Infections and Treatments
2015 - Elsevier BV | Veterinary Parasitology
Produção Nacional
Revisado por pares
Vagner Ricardo da Silva Fiúza, Carlos Wilson Gomes Lopes, Rachel Ingrid Juliboni Cosendey, Francisco Carlos Rodrigues de Oliveira, Ronald Fayer, Mónica Santı́n,
The presence of Enterocytozoon bieneusi in sheep has been reported in only three countries worldwide. The present study has found E. bieneusi in Brazilian sheep for the first time; in 24/125 (19.2%) fecal samples by PCR and on 8/10 (80%) farms from three diverse locations. A significantly greater number of lambs (34.1%) were found infected than older sheep (11.1%) (P = 0.0036); most of the lambs were less than 6 months of age. Farms with an intensive production system had a lower infection rate (10.5%) ...
Tópico(s): Mycobacterium research and diagnosis
2016 - Elsevier BV | Research in Veterinary Science
Produção Nacional
Revisado por pares
Ramon Rodrigues Sá, Rafael Amorim Matos, Vagner Cardoso Da Silva, Jamile da Cruz Caldas, Maria Celeste da Silva Sauthier, Walter Nei Lopes dos Santos, Hemerson Iury Ferreira Magalhães, Aníbal de Freitas Santos Júnior,
In this study, an HPLC-DAD method was developed and validated for the quantification of bioactive phenolics in herbal medicines containing Cynara scolymus (Globe artichoke), Maytenus ilicifolia Mart ex Reiss "Espinheira santa" and Ptychopetalum uncinatum "Marapuama". The samples were lyophilized and 5.0 g of solid were extracted with 30 mL of methanol acidified with 100 μL of concentrated HCl, under magnetic stirring at 40 °C for 30 min. Separation was carried out on a C18 column with analytical solvents ...
Tópico(s): Natural Compounds in Disease Treatment
2017 - Elsevier BV | Microchemical Journal
Produção Nacional
Revisado por pares
Sandra Yamashiro, Vagner Ricardo da Silva Fiúza, Ângela Therezinha Lauand Sampaio Teixeira, Nilson Branco, Carlos Emílio Levy, Isabel Cristina Vidal Siqueira-Castro, Regina Maura Bueno Franco,
Enterocytozoon bieneusi are the most common microsporidia associated with different clinical manifestations such as diarrhoea, respiratory tract inflammation and acalculous cholecystitis, especially in immunocompromised patients. Infection usually occurs by ingestion of food and water contaminated with spores, but can also result from direct contact with spores through broken skin, eye lesions, and sexual transmission, depending on the microsporidian species. Although there are reports of E. bieneusi ...
Tópico(s): Enterobacteriaceae and Cronobacter Research
2017 - Instituto Oswaldo Cruz, Ministério da Saúde | Memórias do Instituto Oswaldo Cruz
Produção Nacional
Revisado por pares
Liane Yuri Kondo Nakada, Regina Maura Bueno Franco, Vagner Ricardo da Silva Fiúza, Luciana Urbano dos Santos, Nilson Branco, José Roberto Guimarães,
The protozoan Giardia duodenalis is one of the parasites of primary concern in drinking water treatment plants, due to its resistance to chlorination. Another matter of concern regarding chlorination of drinking water is the formation of disinfection by-products in the presence of precursors such as natural organic matter (NOM). In this study, the effects of ozonation (5 mg L−1) on G. duodenalis cysts in raw surface water from a drinking water treatment plant were evaluated, and the presence and alteration ...
Tópico(s): Parasitic infections in humans and animals
2018 - Elsevier BV | Chemosphere
Produção Nacional
Revisado por pares
Jamille Batista Faria Prado, Carlos Alberto do Nascimento Ramos, Vagner Ricardo da Silva Fiúza, Verônica Jorge Babo-Terra,
Abstract Enterocytozoon bieneusi is an opportunistic intestinal pathogen that infects humans and a wide variety of animals worldwide. Our aim in this study was to investigate the occurrence of E. bieneusi in a domestic cat population in Campo Grande, Mato Grosso do Sul, Brazil. Sixty fecal samples from diarrheic cats were subjected to polymerase chain reaction (PCR) and the amplicons were sequenced for identification. E. bieneusi was detected in two samples (3.3%), both identified as genotype D. This ...
Tópico(s): Parasites and Host Interactions
2019 - Colégio Brasileiro de Parasitologia Veterinaria | Revista Brasileira de Parasitologia Veterinária/Brazilian Journal of Veterinary Parasitology
Produção Nacional
Revisado por pares
Vagner Pereira da Silva, Lavínia de Carvalho Brito, André Mesquita Marques, Flávia da Cunha Camillo, Maria Raquel Figueiredo,
Carapa guianensis (Andiroba, Meliaceae) is considered a multipurpose tree. In Brazil, Indigenous people have used it as insect repellent and in the treatment of various diseases. Most biological activities and popular uses are attributed to limonoids, which are highly oxygenated tetranortriterpenoids. More than 300 limonoids have been described in Meliaceae family. Limonoids from Andiroba oil have shown high anti-inflammatory and anti-allergic activities in vivo, by inhibiting platelet activating ...
Tópico(s): Insect Utilization and Effects
2023 - Elsevier BV | Current Research in Toxicology
Produção Nacional
Revisado por pares
Ianca Carneiro Ferreira, Vagner Pereira da Silva, João Claudio Vilvert, F. de F. Souza, Sérgio Tonetto de Freitas, Marcos dos Santos Lima,
Acerola fruit has gained prominence for its high nutraceutical value, associated with high levels of ascorbic acid and phenolic compounds. The objectives of this study were to analyze the chemistry composition and antioxidant capacity in seven Brazilian varieties of acerola. All acerola genotypes were harvested at the red ripe maturity stage, and the fruit were subjected to metabolite analyses by High-Performance Liquid Chromatography. The varieties presented high levels of ascorbic acid and malic ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2021 - Wiley | Journal of Food Biochemistry
Produção Nacional
Revisado por pares
Meylin Bautista Gutierrez, Taís Rondello Bonatti, Vagner Ricardo da Silva Fiúza, Angélica Terashima, Marco Canales, Juliana José, Regina Maura Bueno Franco,
Tópico(s): Amoebic Infections and Treatments
2018 - Springer Science+Business Media | Environmental Science and Pollution Research
Produção Nacional
Revisado por pares
The text highlights the central terms present in the work of the American economist-sociologist Thorstein Veblen (1857-1929), pointing to the scope and limits of his explanatory concepts. We look at terms such as instinct, habits of life and thought which support his argument and enable us to get a clearer picture of his theoretical effort to build a model of analysis for understanding the social and economic dynamics of the Second Industrial Revolution, also meant to counter the neoclassical economics ...
Tópico(s): Economic Theory and Policy
2010 - UNIVERSIDADE FEDERAL DE SANTA CATARINA | Política & Sociedade