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Search Results: 1 - 10 of 87973 matches for " José Renato Pereira "
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Perfura o esofágica de causa rara Rare cause of esophageal perforation
Ana Catarina Rego,Nuno Nunes,José Renato Pereira,Nuno Paz
Jornal Português de Gastrenterologia , 2012,
Abstract:
Dilata o Papilar com Bal o de Grande Diametro Precedida de Esfincterotomia para Remo o de Cálculos da Via Biliar Principal: Casuística de Um Ano Papillary Large-Balloon Dilation Preceded by Sphincterotomy for Removal of Bile Ducts Stones: One Year Experience
Ana Catarina Rego,Nuno Nunes,José Renato Pereira,Nuno Paz
Jornal Português de Gastrenterologia , 2011,
Abstract: INTRODU O: A associa o de dilata o da papila de Vater com bal o TTS-CRE (through the scope-controlled radial expansion) com esfincterotomia (ETE) tem sido usada para remo o de cálculos de grandes dimens es da via biliar principal (VBP). OBJECTIVOS: Apresenta o da casuística do nosso Servi o durante doze meses, em que se procedeu a ETE seguida de dilata o papilar com bal o para remo o de cálculos da VBP. Pretendeu-se avaliar a eficácia na remo o dos cálculos, a necessidade de litotrí-cia mecanica e a ocorrência de complica es. MéTODOS: Entre Outubro de 2009 e Setembro de 2010 foi realizada dilata o papilar com bal o precedida de ETE em 25 doentes. Os doentes incluídos apresentavam no colangiograma por colangiopancreatografia retrógrada endoscópica (CPRE) cálculos na VBP com dimens o superior ou igual a 10mm. Usaram-se bal es TTS-CRE de 12 a 20mm de diametro. RESULTADOS: Dos 25 doentes, 12 (48%) eram do sexo feminino. A média de idades foi de 73 anos e 65% dos doentes apresentavam dois ou mais cálculos. O tamanho médio dos cálculos foi de 15mm. Seis doentes apresentavam litíase residual do colé-doco com ETE prévia. Em 100% dos casos foi conseguida remo o completa dos cálculos numa única sess o. N o houve necessidade de litotrícia mecanica. N o se registaram complica es. CONCLUS O: A associa o dos dois métodos mostrou-se eficaz, rápida e segura na remo o de cálculos de grandes dimens es da VBP. INTRODUCTION: Papillary balloon dilation with TTS-CRE balloon (through the scope-controlled radial expansion) in association with sphincterotomy (EST) has been used for removal of large bile duct stones. OBJECTIVES: We present the 12 month experience of our Department wherein we performed a EST followed by papillary balloon dilation for removal of bile duct stones. Efficacy, need for mechanical lithotripsy and occurrence of complications were evaluated. METHODS: Papillary balloon dilation preceded by EST was performed in 25 patients from October 2009 to September 2010. Patients included in the present study had bile duct stones with a diameter greater than or equal to 10mm detected on cholangiogram obtained during endoscopic retrograde cho-langiopancreatography (ERCP). We used TTS-CRE balloons with 12 to 20mm. RESULTS: Of the 25 patients, 12 (48%) were female. Average age was 73 years and 65% of patients had two or more stones. The average size of the stones was 15mm. Six patients had residual bile duct stones with prior EST. In 100% of cases complete removal of the bile duct stones was achieved in a single session. There was no need for mechanical lit
Metalobezoar gástrico Gastric bezoar
Ana Catarina Rego,Nuno Nunes,José Renato Pereira,Nuno Paz
Jornal Português de Gastrenterologia , 2012,
Abstract:
Quisto de Duplica o Gástrica com Epitélio Pancreático Ectópico: Apresenta o na Idade Adulta Gastric duplication cyst with ectopic pancreatic epithelium: Presentation in the adult
Sofia Ribeiro,Ana Catarina Rego,Nuno Nunes,José Renato Pereira
Jornal Português de Gastrenterologia , 2012,
Abstract: Os quistos de duplica o gastrointestinal s o malforma es congénitas raras que podem surgir ao longo de todo o tubo digestivo. S o mais frequentes no íleon e jejuno, sendo a localiza o gástrica das mais raras (4%)1. A maioria dos casos é diagnosticada na infancia. Os autores descrevem o caso de um quisto de duplica o gástrica com epitélio pancreático ectópico diagnosticado na idade adulta, submetido a cirurgia de resse o Gastrointestinal duplications cysts are a rare congenital disease and may arise anywhere in the gastrointestinal tract. The ileum and the jejunum are the most common sites and gastric localization is rare, comprising about 4 % of all alimentary tract duplications. Most of them are diagnosed early in life. The authors report a case of gastric duplication cyst with ectopic pancreatic epithelium diagnosed in an adult submitted to surgery
A Bioinformatics Classifier and Database for Heme-Copper Oxygen Reductases
Filipa L. Sousa,Renato J. Alves,José B. Pereira-Leal,Miguel Teixeira,Manuela M. Pereira
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0019117
Abstract: Heme-copper oxygen reductases (HCOs) are the last enzymatic complexes of most aerobic respiratory chains, reducing dioxygen to water and translocating up to four protons across the inner mitochondrial membrane (eukaryotes) or cytoplasmatic membrane (prokaryotes). The number of completely sequenced genomes is expanding exponentially, and concomitantly, the number and taxonomic distribution of HCO sequences. These enzymes were initially classified into three different types being this classification recently challenged.
Microbiological Assessment of Soil Planted with Cover Crops, and Soybean and Maize in Succession  [PDF]
Jaqueline Vanelli, Edleusa Pereira Seidel, José Renato Stangarlin, Marcos Cesar Mottin, Pablo Wenderson Ribeiro Coutinho, Nicanor Pilarski Henquemeier, Danielle Acco Cadorin, Jucenei Fernando Frandaloso, André Luiz Alves
American Journal of Plant Sciences (AJPS) , 2018, DOI: 10.4236/ajps.2018.94052
Abstract: This study aimed to assess the population density of nematodes and mycorrhizal soil fungi, in areas cultivated with oats, brachiaria, forage and white lupine, as well as in maize and soybean crops in succession, in order to generate a microbiological indicator of soil quality. In order to assess nematode and arbuscular mycorrhizal fungi (AMF) population densities, the experiment was performed in two stages: the first assessment was performed in the area where different cover crops were planted, in five seasons (0, 60, 90, 120, 150 days after sowing—DAS). In the second stage, soybean and maize crops in succession were assessed. According to the results, free-living nematodes and arbuscular mycorrhizal fungi population densities were not affected by the cover crop species used and, therefore, these can be grown prior to soybean and corn crops, without impact to free-living nematodes and AMF. The largest population of saprophyte nematodes and AMF occurred at 90 days. The cultivation of soybean and corn did not influence the number of free-living nematodes, but influenced the number of arbuscular mycorrhizal fungi. The highest numbers of mycorrhizal fungi Gigaspora margarita and Glomus macrocarpum were found in maize.
EFFECTS OF ENVIRONMENTAL FACTORS ON THE ACTIVITY OF ACID PHOSPHATASE IN COMMON BEAN EFEITO DE FATORES AMBIENTAIS DA FOSFATASE áCIDA NO FEIJOEIRO
Itamar Pereira de Oliveira,Michael Djie Thung,José Renato de Freitas,Renato Sérgio Mota dos Santos
Pesquisa Agropecuária Tropical , 2007, DOI: 10.5216/pat.v28i2.2999
Abstract: Plants with 15 days after the germination were picked in field experiments with the purpose of knowing the best pH, temperature and the necessary time to express the activity of the phosphatase acid in three bean varieties (Phaseolus vulgaris L.), Carioca, EMP-84 and CNF-10, in the presence and in the phosphorus absence. The largest values of activity of the phosphatase acid were observed when the plants were tested in pH 5.5 solution during 120 minutes at the temperature of 30°C. The use of buffer substances as PNPP + Triton X-100 expressed better the activity of the phosphatase acid. The vacuum condition constituted a positive factor to express the activity of the phosphatase acid. The plants developed under drought stress presented smaller activity of the phosphatase acid. The top leaf/root ratio of activity of the phosphatase acid got 5.72 for the Carioca, 4.91 for EMP-84 and 4.36 for CNF-10 variety. The plants when developed under drought stresses condition presented smaller values of activity of the phosphatase acid. KEY-WORDS: Phaseolus vulgaris; temperature; buffered solution; time of reaction. Plantas com 15 dias após a germina o foram colhidas em experimentos de campo com a finalidade de conhecer o pH, temperatura e tempo necessários para melhor expressar a atividade da fosfatase ácida em três variedades do feijoeiro (Phaseolus vulgaris L.), Carioca, EMP-84 e CNF-l0, na presen a e na ausência de fósforo. Os maiores valores de atividade da fosfatase ácida foram observadas quando as plantas foram colocadas em solu o em pH 5,5 durante 120 minutos à temperatura de 30°C. A utiliza o de substancias tamponantes como PNPP + Triton X-100 expressaram melhor a atividade da fosfatase ácida. As condi es de vácuo constituíram um fator positivo para a atividade da fosfatase ácida. As plantas desenvolvidas sob estresse hídrico apresentaram menor atividade da fosfatase ácida. A rela o folha-raiz da atividade da fosfatase ácida atingiu 5,72 para a variedade Carioca, 4,91 para a variedade EMP-84 e 4,36 para a variedade CNF-10. PALAVRAS-CHAVE: pH; temperatura; solu o tamponada; tempo de rea o; Phaseolus vulgaris.
Loss of Genetic Redundancy in Reductive Genome Evolution
André G. Mendon?a ,Renato J. Alves ,José B. Pereira-Leal
PLOS Computational Biology , 2011, DOI: 10.1371/journal.pcbi.1001082
Abstract: Biological systems evolved to be functionally robust in uncertain environments, but also highly adaptable. Such robustness is partly achieved by genetic redundancy, where the failure of a specific component through mutation or environmental challenge can be compensated by duplicate components capable of performing, to a limited extent, the same function. Highly variable environments require very robust systems. Conversely, predictable environments should not place a high selective value on robustness. Here we test this hypothesis by investigating the evolutionary dynamics of genetic redundancy in extremely reduced genomes, found mostly in intracellular parasites and endosymbionts. By combining data analysis with simulations of genome evolution we show that in the extensive gene loss suffered by reduced genomes there is a selective drive to keep the diversity of protein families while sacrificing paralogy. We show that this is not a by-product of the known drivers of genome reduction and that there is very limited convergence to a common core of families, indicating that the repertoire of protein families in reduced genomes is the result of historical contingency and niche-specific adaptations. We propose that our observations reflect a loss of genetic redundancy due to a decreased selection for robustness in a predictable environment.
Dilata??o Papilar com Bal?o de Grande Diametro Precedida de Esfincterotomia para Remo??o de Cálculos da Via Biliar Principal: Casuística de Um Ano
Rego,Ana Catarina; Nunes,Nuno; Pereira,José Renato; Paz,Nuno; Duarte,Maria Antónia;
Jornal Português de Gastrenterologia , 2011,
Abstract: introduction: papillary balloon dilation with tts-cre balloon (through the scope-controlled radial expansion) in association with sphincterotomy (est) has been used for removal of large bile duct stones. objectives: we present the 12 month experience of our department wherein we performed a est followed by papillary balloon dilation for removal of bile duct stones. efficacy, need for mechanical lithotripsy and occurrence of complications were evaluated. methods: papillary balloon dilation preceded by est was performed in 25 patients from october 2009 to september 2010. patients included in the present study had bile duct stones with a diameter greater than or equal to 10mm detected on cholangiogram obtained during endoscopic retrograde cho-langiopancreatography (ercp). we used tts-cre balloons with 12 to 20mm. results: of the 25 patients, 12 (48%) were female. average age was 73 years and 65% of patients had two or more stones. the average size of the stones was 15mm. six patients had residual bile duct stones with prior est. in 100% of cases complete removal of the bile duct stones was achieved in a single session. there was no need for mechanical lithotripsy. there were no complications. conclusion: the combination of the two methods proved effective, fast and safe for removal of large bile duct stones
Water sorption of CH3- and CF3-Bis-GMA based resins with additives
Prakki, Anuradha;Cilli, Renato;Vieira, Ian Matos;Dudumas, Kristina;Pereira, José Carlos;
Journal of Applied Oral Science , 2012, DOI: 10.1590/S1678-77572012000400014
Abstract: objectives: to evaluate the effect of additives on the water sorption characteristics of bis-gma based copolymers and composites containing tegdma, ch3bis-gma or cf3bis-gma. material and methods: fifteen experimental copolymers and corresponding composites were prepared combining bis-gma and tegdma, ch3bis-gma or cf3bis-gma, with aldehyde or diketone (24 and 32 mol%) totaling 30 groups. for composites, barium aluminosilicate glass and pyrogenic silica was added to comonomer mixtures. photopolymerization was effected by 0.2 wt% each of camphorquinone and n,n-dimethyl-p-toluidine. specimen densities in dry and water saturated conditions were obtained by archimedes' method. water sorption and desorption were evaluated in a desorption-sorption-desorption cycle. water uptake (%wu), water desorption (%wd), equilibrium solubility (es; μg/mm3), swelling (f) and volume increase (%v) were calculated using appropriate equations. results: all resins with additives had increased %wu and es. tegdma-containing systems presented higher %wu, %wd, es, f and %v values, followed by resins based on ch3bis-gma and cf3bis-gma. conclusions: aldehyde and diketone led to increases in the water sorption characteristics of experimental resins.
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