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Search Results: 1 - 10 of 406783 matches for " Maria C. F. Oliveira "
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Características produtivas do tomateiro submetido a diferentes níveis de sais, na água de irriga??o
Oliveira, Bernardete C.;Cardoso, Maria A. A.;Oliveira, Juliana C. de;Oliveira, Francisco A. de;Cavalcante, Lourival F.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2007, DOI: 10.1590/S1415-43662007000100002
Abstract: during the period of june to november of 1999, the study was carried out in a greenhouse of the dser/cca/ufpb, in the municipality of areia in the state of paraiba, brazil, with the objective of verifying the effects of salts in the irrigation water on some development characteristics of tomato crop (lycopersicum esculentum sp), cultivar santa rosa. the water used was from jacaré reservoir located in the remígio city, with electrical conductivity of 24.5 ds m-1. the treatments consisted of: rainfall water (t1 - 0.01 ds m-1) and dilutions of the reservoir water with rainfall water, in the proportions of 1:4 (t2 - 5.7 ds m-1), 1:3 (t3 - 6.8 ds m-1), 1:2 (t4 - 8.3 ds m-1), 1:1 (t5 - 12.7 ds m-1) and 1:0 (t6 - 24.5 ds m-1). the experimental design consisted of randomized blocks with 3 repetitions, the experimental unit being recipient with capacity for 20 l, containing 15 kg of air dried soil. the irrigation events varied from one to two days. the height of plants, leaf area, production of the dry matter, production of fruits and evapotranspiration of the crop were evaluated. the levels of salts in the irrigation water reduced significantly (p < 0.01) the values of the variables analyzed, with a linear effect on height and dry matter production and quadratic effect on leaf area, production of fruits and evapotranspiration. the latter was correlated positively to leaf area.
Síntese de copolímeros metacrílicos através da modifica o química do poli(metacrilato de metila) de massa molar Controlada
César-Oliveira Maria A. F.,Zaioncz Soraia,Oliveira Angelo R. S.,Almeida Maria C. R.
Polímeros , 1999,
Abstract: Poli(metacrilato de metila) (PMMA) de massa molar controlada foi sintetizado, em solu o de tolueno, utilizando peróxido de benzoíla como iniciador e 1-dodecanotiol (DDM) como agente de transferência de cadeia. O efeito da concentra o de DDM sobre a massa molar do PMMA foi investigado. Copolímeros de metacrilato de metila e ácido metacrílico, P(MMA-MAA), foram sintetizados a partir da hidrólise parcial de homopolímeros de metacrilato de metila com variadas massas molares. Utilizando uma técnica inédita na literatura para a síntese de ésteres poliméricos, foi realizada a rea o das unidades ácidas do P(MMA-MAA) com álcoois de cadeia longa, na presen a de 1,3-diciclo-carbodiimida e 4-dimetilamino-piridina, que produziu copolímeros contendo longos segmentos hidrocarb nicos pendentes, tais como o poli(metacrilato de metila-co-metacrilato de hexadecila).
Flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application
Cruz, Maria C. M.;Oliveira, Adelson F.;Oliveira, Dili L.;V. Neto, Jo?o;
Brazilian Journal of Plant Physiology , 2011, DOI: 10.1590/S1677-04202011000200002
Abstract: this work focuses on the evaluation of flowering and vegetative growth of olive tree submitted to pruning and paclobutrazol application under field conditions with low temperatures during the winter. two-years-old olive plant variety grappolo 575, were submitted to light pruning, removing apical dominance, before treatments application. the treatments were organized in a 4×2 factorial scheme, respective to four pbz concentrations tested: 0, 200, 400 and 800 mg l-1 of pbz and two plants groups, with and without pruning, in randomized block with four replications. paclobutrazol concentrations tested did not affect the olive tree flowering. the plant vegetative growth was reduced until 60 days after paclobutrazol application. pruning resulted in stimulation of emission of vegetative shoots and reduction of flowering.
Cirurgia de revasculariza o do miocárdio em pacientes com cardiomiopatia isquêmica e disfun o ventricular acentuada: resultados imediatos e de longo prazo
OLIVEIRA Sérgio F,JATENE Adib D,SOLIMENE Maria C,OLIVEIRA Sergio Almeida de
Revista Brasileira de Cirurgia Cardiovascular , 1997,
Abstract: Objetivo: Estudar aspectos ainda n o esclarecidos relacionados a parametros clínicos pré-operatórios de prognóstico, risco cirúrgico, benefício funcional e sobrevida a longo prazo. Métodos: Foram analisados 71 pacientes com diagnóstico de cardiomiopatia isquêmica, com fra o de eje o ventricular esquerda < 30% e perfus o miocárdica pela cintilografia TL-201 antes e após a revasculariza o do miocárdio no período hospitalar e após a alta, com seguimento médio de 48 meses. Resultados: A mortalidade imediata foi de 2,8% e a sobrevida tardia em seguimento de 5 anos foi de 62,8%. Analisando todos os pacientes em rela o à curva de sobrevida, n o se verificou correla o da presen a ou ausência da onda Q no ECG, com a presen a de isquemia na cintilografia Tl-201, com o grau de fra o de eje o do ventrículo esquerdo e com a intensidade de insuficiência cardíaca (ICC) ou de angina. Comparando-se os pacientes sobreviventes com os que faleceram, verificou-se diferen a estatisticamente significante em rela o à maior presen a de ICC classe funcional IV e de bloqueio de ramo esquerdo nos pacientes que faleceram. Conclus o: As presen as de insuficiência cardíaca classe funcional IV e de bloqueio de ramo esquerdo relacionaram-se a pior prognóstico. Devido ao mecanismo de morte ser multifatorial e a miocardiopatia isquêmica apresentar padr o miocárdico e arterial heterogêneos, é difícil estabelecer índices pré-operatórios de prognóstico para a revasculariza o do miocárdio. Os resultados cirúrgicos obtidos a curto e longo prazos demonstram a seguran a do procedimento cirúrgico e o seu benefício em aumentar a sobrevida e a qualidade de vida dos pacientes com cardiomiopatia isquêmica.
Identification of New Genes Related to Virulence of Xanthomonas axonopodis Pv. Citri during Citrus Host Interactions  [PDF]
Cristiano B. Ferreira, Leandro M. Moreira, Joice B. Brigati, Lonjoré L. Lima, Jesus A. Ferro, Maria I. T. Ferro, Julio C. F. de Oliveira
Advances in Microbiology (AiM) , 2017, DOI: 10.4236/aim.2017.71003
Abstract: A mutant library of the bacterium Xanthomonas citri subsp. citri strain 306 pathotype A (Xac), the causative agent of most aggressive Asiatic type A citrus canker, was screened regarding altered canker symptoms after inoculations into Citrus sinensis and Citrus limonia host leaves. Twenty-six mutants have shown phenotypic virulence changes and have respectively knocked out gene identified by sequencing. In vivo growth curves were obtained for nine mutants to quantify how the mutations could affect pathogen’s adaptability to growth inside and attack host plant infected tissue. Among identified genes in mutated strains, we could find those that until now had not been reported as being involved in Xac adaptation and/or virulence, such as predicted to encode for xylose repressor-like protein (XACΔxylR), Fe-S oxidoredutase (XACΔaslB), helicase IV (XACΔhelD), ubiquinol cytochrome c oxidoreductase iron-sulfur subunit (XACΔpetA), chromosome partitioning protein (XACΔparB) and cell division protein FtsB (XACΔftsB), in addition to genes predicted to encode for hypothetical proteins. The new genes found in this study as being relevant to adaptation and virulence, improve the understanding of Xac fitness during citrus plant attack and canker symptoms development.
Fatores socioecon?micos e dietéticos de risco para a anemia em crian?as de 6 a 59 meses de idade
Oliveira, Maria A. A.;Osório, M?nica M.;Raposo, Maria C. F.;
Jornal de Pediatria , 2007, DOI: 10.2223/JPED.1579
Abstract: objective: the objective of this study was to use statistical modeling to identify risk factors for anemia in children aged 6 to 59 months in the state of pernambuco, covering socioeconomic and dietary aspects. methods: the sample comprised 746 children aged between 6 and 59 months from the state of pernambuco. their hemoglobin was assayed and a 24-hour dietary recall performed. risk of anemia was analyzed with relation to socioeconomic variables and to dietary intakes, using multivariate analysis models. results: the risk factors for anemia were: a high proportion of calories from cow's milk, low density of nonheme iron, low age and low maternal educational level; age was the most prominent factor, with children under 24 months exhibiting 3.61 times greater risk of being anemic than the older children. conclusions: this study confirms the need for a clear picture of the dietary intake of children in brazil, in order that associations with anemia can be better understood. our results revealed that the dietary factors which were most responsible for risk of anemia were a greater proportion of calories from cow's milk and lower density of nonheme iron, in addition to age below 24 months and low maternal educational level.
Determina o do parametro de solubilidade de poliuretanos de PBLH
Santos Eder M.,Aguiar Marcelo,César-Oliveira Maria A. F.,Zawadzki S?nia F.
Polímeros , 2000,
Abstract: O parametro de solubilidade de poliuretanos segmentados foi determinado através de ensaios de inchamento no equilíbrio, tratando-se os dados pela teoria de Flory-Rehner. O segmento flexível dos poliuretanos foi constituído por blocos de oligobutadieno e o segmento rígido foi formado pela rea o entre di-isocianato de tolileno e os extensores de cadeia 1,3-propanodiol; 1,4-butanodiol; 1,6-hexanodiol e 2, 2'-di-hidroxi-isopropil N, N'anilina. O teor em segmento rígido para os polímeros provenientes dos extensores alifáticos ficou na faixa de 25,1% a 28,3%, enquanto que, nos polímeros estendidos com o extensor aromático, foi de 32,6%.
The Spatial-Perceptual Design Space: a new comprehension for Data Visualization
Jose F. Rodrigues Jr,Agma J. M. Traina,Maria C. F. Oliveira,Caetano Traina Jr
Computer Science , 2015, DOI: 10.1057/palgrave.ivs.9500161
Abstract: We revisit the design space of visualizations aiming at identifying and relating its components. In this sense, we establish a model to examine the process through which visualizations become expressive for users. This model has leaded us to a taxonomy oriented to the human visual perception, a conceptualization that provides natural criteria in order to delineate a novel understanding for the visualization design space. The new organization of concepts that we introduce is our main contribution: a grammar for the visualization design based on the review of former works and of classical and state-of-the-art techniques. Like so, the paper is presented as a survey whose structure introduces a new conceptualization for the space of techniques concerning visual analysis.
Cladophialophora carrionii: a rare agent of chromoblastomycosis in Rio de Janeiro State, Brazil
Mouchalouat, Marcelle de F.;Galhardo, Maria Clara G.;Fialho, Paulo Cezar Monteiro;Coelho, Janice Mery C. de Oliveira;Zancopé-Oliveira, Rosely Maria;Valle, Antonio Carlos F. do;
Revista do Instituto de Medicina Tropical de S?o Paulo , 2008, DOI: 10.1590/S0036-46652008000600008
Abstract: a 73 year-old male farm laborer from a rural area presented a 15 year history of extensive tumoral lesions over his left leg. histological studies of skin biopsy showed pseudoepitheliomatous hyperplasia and granulomatous chronic inflammatory process with muriform cells, confirming chromoblastomycosis (cbm). cladophialophora carrionii was isolated in culture. treatment with itraconazole 400 mg/day for 12 months resulted in complete remission of lesions. as far we aware, this is the first case report of cbm caused by cladophialophora carrionii in rio de janeiro state, brazil.
Incorporation of medium chain fatty acids into fish oil triglycerides by chemical and enzymatic interesterification
Feltes, Maria M. C.,de Oliveira Pitol, L.,Gomes Correia, J. F.,Grimaldi, R.
Grasas y Aceites , 2009,
Abstract: Structured triglycerides (STs) containing both medium-chain fatty acids (MCFA) and polyunsaturated fatty acids (PUFA) in the same molecule offer nutritional and therapeutic benefits. The aim of this work was to establish the incorporation of MCFA into fish oil triglycerides (TAGs), while maintaining substantial levels of docosahexaenoic and eicosapentaenoic acids. The effects of different acyl donors (capric acid methyl ester/MeC10 or medium chain triglyceride/TCM) and of the catalyst (chemical or enzymatic) on the fatty acid composition of the reaction product were studied. The fatty acid composition of the fish oil TAG was modified after interesterification to contain MCFA, and it depended on the catalyst and on the substrates. Thermograms obtained by Differential Scanning Calorimetry (DSC) showed that interesterification promoted noteworthy changes in the melting profile of the samples. STs of clinical nutrition interest containing both EPA and DHA obtained from fish oil along with MCFA were successfully produced. Triglicéridos estructurados (SL) conteniendo ácidos grasos de cadena media (MCFA) y ácidos grasos poliinsaturados (PUFA) en la misma molécula de glicerol tienen ventajas nutricionales y terapéuticas. Se establece la incorporación de MCFA a los triglicéridos (TAGs) de aceite de pescado, conservando un contenido considerable de ácidos docosahexaenóico (DHA) y eicosapentaenóico (EPA). El efecto de diferentes acil donadores (éster metílico de ácido cáprico/MeC10 o triglicéridos de cadena media/TCM) y de catalizador (químico o enzimático) sobre la composición del producto de las reacciones fue estudiado. La composición de ácidos grasos de los TAGs del aceite de pescado fue modificada después de las reacciones para contener MCFA y dependió del catalizador y de los substratos. Los termogramas obtenidos por Calorimetría Diferencial de Barrido (DSC) indicaron que la interesterificación provocó alteraciones considerables de los perfiles de fusión de las muestras. Fueron producidos STs de interés en nutrición clínica conteniendo EPA y DHA, además de MCFA.
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