974 resultados para Termo topológico de Chern-Simons


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Pós-graduação em Pediatria - FMB

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No presente trabalho estudamos a existência e unicidade de solução bem como o decaimento exponencial do modelo abaixo. Nosso resultado mais importante versa sobre o decaimento exponencial do sistema termo-elástico-poroso: Cattaneo versus Fourier, dado por: ρutt = µuxx + bφx − βθx em (0, π) × (0, ∞), Jθφtt = αφxx − bux − ξφ+mθ – γφt em (0, π) × (0, ∞), cθt = k∗qx − βuxt − mφt em (0, π) × (0, ∞), τq mφt= −βq − θx em (0, π) × (0, ∞), u = φx = θ = q = 0 sobre (0, π) × (0, ∞), (u(., 0), φ (., 0), θ (., 0), q(., 0)) = (u0 (x), φ0 (x), θ0 (x), q0 (x)) em (0, π), (ut(., 0), φt(., 0)) = (u1(x), φ1(x)) em (0, π), a existência e unicidade sera´ obtida usando o Teorema de Lumer-Phillips e para o decaimento exponencial usaremos uma técnica de semigrupo.

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Pós-graduação em Enfermagem (mestrado profissional) - FMB

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The aim of the study was to evaluate the influence of glucocorticoids on vital parameters of full-term and preterm lambs from birth to 48 hours of life. Four experimental groups were formed: NDG (normal delivery group - lambs vaginally delivered, n=15, average of 146-day gestation); NDEXG (normal delivery with dexamethasone group - lambs vaginally delivered whose mothers received 16mg of dexamethasone at 141 days of gestation, n=8, average of 143-day gestation); PRE (premature lambs born by cesarean section at 138 days of gestation, n=10) and PREDEX (premature lambs born by cesarean section at 138 days gestation, whose mothers received 16mg of dexamethasone two days before, n=9). Heart and respiratory rates had variations during the observation period, with the highest mean values in the groups of normal deliveries (NDG and NDEXG). Rectal temperature decreased in all groups in the first 60 minutes of life, with the lowest mean values in premature lambs (PRE and PREDEX) and the Apgar score was higher in animals delivered at normal gestational time. Preterm lambs had lower vitality and chance of survival, however, lower mortality rate was observed in offspring of ewes that received dexamethasone two days before surgery.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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This study aimed to analyze the characteristics of temperature and air humidity from neighborhoods of Presidente Prudente according to the pattern of land use specific to each of them, over a representative period of winter (July 2011), at different times of day in order to identify the major changes in climatic elements and their causes in urban areas. The work is based mainly on the Monteiro’s theory (1976) of Urban Climate System and for its implementation was used data of temperature and relative humidity of the air in three urban neighborhoods and one rural area. With them, a Chart of Rhythmic Analysis was elaborated for identification of the operating atmospherics systems and basic climate conditions in the period. Were prepared, also, graphs and charts to evaluate and compare the data. There were significant differences in the characteristics of temperature and air humidity between the neighborhoods, especially when compared the urban areas with the rural area

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Pentraxina 3 (PTX3) é um componente essencial da resposta imune inata e age como receptores de reconhecimento de padrões (PPRs) reconhecendo produtos microbianos, opsonizando fungos, bactérias Gram positivas e negativas, além de apresentar a capacidade de ativar o sistema complemento. Poucos estudos na literatura mundial têm investigado a expressão de PTX3 nas complicações gestacionais associadas à invasão microbiana da cavidade amniótica e resultados conflitantes têm sido descritos. Avaliar a expressão gênica e protéica de PTX3 em membranas corioamnióticas de gestações pré-termo complicadas por Trabalho de Parto Prematuro (TPP) e bolsa íntegra ou Rotura Prematura de Membranas Pré-Termo (RPM-PT), na presença de corioamnionite histológica (CA). Foram incluídas no estudo 30 gestantes com TPP, sendo 15 na ausência e 15 na presença de corioamnionite histológica e 30 gestantes com RPM-PT, sendo 15 na ausência e 15 na presença de corioamnionite histológica. Cortes parafinizados foram encaminhados à análise histopatológica para confirmação de corioamnionite histológica. Outros fragmentos de 1cm2 das membranas foram submetidos à extração de RNA total. Após a extração do RNA, as amostras com concentração entre 0,02 e 0,2g/ L de RNA foram submetidas à obtenção de cDNA para posterior utilização na quantificação da expressão gênica de PTX3 pela técnica da PCR em tempo real empregando-se o Sistema TaqMan® Gene Expression Assays. Fragmentos das mesmas amostras incluídas no estudo foram utilizados para verificar a expressão da proteína PTX-3 através da técnica de Western Blotting. Dentre as 60 membranas corioamnióticas incluídas no estudo, 56 (93,3%) expressaram PTX-3. Não houve diferença estatisticamente significativa na expressão de mRNA de PTX-3 (p=0,137) entre os grupos: RPM-PT na presença de CA (Md: 0.355; 0.11-1.03), RPM-PT na...(Resumo completo, clicar acesso eletrônico abaixo)

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Introduction: Preterm Labor (PTL) and Preterm Premature Rupture of Membranes (PPROM) cause severe complications for both mother and fetus. Among the risk factors associated with preterm labor and PPROM, genetic predisposition has been gaining importance. However, the association between polymorphic genes and the pathogenesis of PTL and PPROM remains elusive. A better understanding of the genetic mechanisms underlying these adverse pregnancy outcomes may enable the identification of high risk patients and allow new approaches to minimize the deleterious effects of prematurity. Aim: To determine the association between maternal IL-6 polymorphism gene and the occurrence of PTL and PPROM. Patients and Methods: The study included 109 patients with prior history of PL and/or PPROM that delivered prematurely at the Obstetrical Unit Care of Botucatu Medical School, UNESP between 2003 and 2012. The control group consisted of 68 patients that delivered at term, matched to the case group by age, ethnicity, and sex of the newborn. Oral swabs (Cath-AllTM – Epicentre Biotechnologies) were collected for analysis of genetic polymorphisms by PCR. Statistical tests were performed to compare genotype, clinical and socio-demographic data from the groups. A p-value of <0.05 was considered significant. Results: The sociodemographic characteristics in both groups were homogeneously distributed. The frequency of the polymorphic allele C, associated with less production of IL-6, and therefore thought to be protective against PTL and PPROM, was 32,5% in the study group and 30,9% in the control group, without statistically significant differences. Conclusion: Considering the sample size included in this study, the frequency of the mutated allele is similar in pregnant women who delivered at term and gestational complications as PTL and PPROM

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A grande quantidade de resíduos plásticos sintéticos descartada diariamente no meio ambiente tem preocupado governantes do mundo todo. No sentido de minimizar este problema várias soluções estão sendo propostas. Uma delas é a busca de materiais potencialmente biodegradáveis no solo. Neste trabalho desenvolveu-se blendas de poli(3-hidroxibutirato) PHB, um polímero biodegradável, com polietileno de baixa densidade PEBD, um polímero convencional e avaliou-se os efeitos do termotratamento em estufa e do fototratamento em câmara de envelhecimento acelerado sobre a biodegradação destes filmes em coluna de solo. As blendas de PEBD/PHB foram preparadas em composições de 90/10, 80/20 e 70/30, utilizando prensa sob aquecimento e os filmes foram analisados por Espectroscopia de Absorção no Infravermelho (FTIR), Microscopia de Luz Polarizada (MLP), perda de massa e ângulo de contato.

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Ethanol production has gained great prominence in the investment new renewable energy sources and Brazil is among the leaders of production. However, this activity generates large amounts of waste being the largest volume of the sugar cane bagasse. For this reason looking up ways to use this material as burning for energy production and composition of forage in the diet of ruminants, however there are difficulties to use this production for this last one. This paper proposes a microbiological treatment with Lentinula edodes and Pleurotus ostreatus in order to enable the bagasse in ruminant feed composition in order to be used more noble than their burning. After treatment with the fungus, tests were performed for quantifying crude protein by the method of Kjeldhal. It was verified that the protein content in the pure bagasse was 1.0% after fermentation the protein content was 4.2% with L.edodes and 4.9% with P. ostreatus. To evaluate the protein quality of the product fermented by L. edodes and P. ostreatus was applied microbiological method for growth of Enterococcus zimogenes verifying that after fermentation the protein quality was 76 and 27.4% with L. edodes and P.ostreatus, respectively, compared with casein. The quantification of amino acids showed significant improvement of protein with altered amino acid profile with treatments of fungos. About of DQO and BOD were also found considerable improvement besides considerable drop in toxicity as measured by acute toxicity test with Daphinia similis