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Search Results: 1 - 10 of 25082 matches for " Maurílio Ant?nio;Queiroz "
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Development of a transformation system for Penicillium brevicompactum based on the Fusarium oxysporum nitrate reductase gene
Varavallo, Maurílio Antnio;Queiroz, Marisa Vieira de;Pereira, Jorge Fernando;Ribeiro, Ronney Adriano;Soares, Marcos Antnio;Ribeiro, Jo?o Batista;Araújo, Elza Fernandes de;
Brazilian Journal of Microbiology , 2005, DOI: 10.1590/S1517-83822005000200015
Abstract: penicillium brevicompactum is a filamentous fungus that presents a potential for industrial use due its efficient pectinase production. a heterologous transformation system was developed for p. brevicompactum based on the complementation of a nitrate reductase mutant. nitrate reductase mutants were obtained by resistance to chlorate in a rate of 23.24% when compared to other mutations that lead to the chlorate resistance. one mutant named 4457-18x was chosen for the transformation experiments with the pnh24 vector containing de fusarium oxysporum nitrate reductase gene. a frequency of approximately 3 transformants/μg dna was obtained using the circular vector pnh24. this frequency was multiplied about 10 fold using the linearized vector with the xba i restriction enzyme. southern analysis of the transformants showed a tendency of the linearized vector to diminish the number of integrations compared to the use of the circular vector. the integration was random and stable in the analyzed transformants. the establishment of a transformation system for p. brevicompactum is fundamental for genetic manipulation of this microorganism.
Discectomia lombar transforaminal: estudo quantitativo em cadáveres
Vialle, Emiliano Neves;Vialle, Luiz Roberto Gomes;Gusm?o, Maurício Santos;Rangel,lio Albuquerque de Moura;Moron, Ruben Cardenas;Rocha, Sérgio;Krieger, Antnio Bernardo de Queiroz;Moreira, Guilherme;
Coluna/Columna , 2009, DOI: 10.1590/S1808-18512009000200006
Abstract: objective: to evaluate the quantitative efficacy of transforaminal lumbar discectomy, through a cadaver study. methods: this study used five fresh human cadavers, that underwent l3-l4 and l4-l5 posterolateral discectomy, aiming to remove as much disc material as possible. after that, the remaining disc material was removed through an anterior approach, for further comparison. results: in l3-l4, transforaminal discectomy allowed the removal of 48% of disc volume, and in l4-l5, 38%. conclusion: although safe and relatively easy to perform, the transforaminal approach does not allow complete discectomy.
Efeito da palha e da mistura atrazine e metolachlor no controle de plantas daninhas na cultura do milho, em sistema de plantio direto
Oliveira, Maurílio Fernandes de;Alvarenga, Ramon Costa;Oliveira, Antnio Carlos de;Cruz, José Carlos;
Pesquisa Agropecuária Brasileira , 2001, DOI: 10.1590/S0100-204X2001000100005
Abstract: the objective of this work was to study the effect of corn plant residue and mixture of atrazine plus metolachlor on weed control in no-till corn system. this experiment was performed in an oxisol, and the weed desiccation was done using glyphosate, 15 days before planting. the experimental design was a randomized block, with three replications. before corn planting, five levels of corn plant residues (0, 3, 6, 9 e 12tha-1) were equally distributed in the plots. two treatments were applied in subplots after corn planting: one without herbicide and the other one using the commercial mixture of atrazine plus metolachlor (1,200+ 1,800gha-1). different weed species were evaluated, at 26 and 41 days after planting. the total grass weeds number was significantly affected by the plant residue levels, independently of herbicide treatments and of evaluation period. the herbicide did not show a significant effect in the first evaluation period. however, in the second evaluation period, the herbicide reduced about 53% the total number of weeds compared to the plots without herbicide. it was verified that in the herbicide absence the total population of weeds were significantly higher in the second evaluation period. however, in the herbicide presence there was no significant difference in the total population of weeds between the two evaluated periods.
Lixivia??o de flumioxazin e metribuzin em dois solos em condi??es de laboratório
Oliveira, Maurílio F. de;Silva, Antnio A. da;Ferreira, Francisco A.;Ruiz, Hugo A.;
Planta Daninha , 1999, DOI: 10.1590/S0100-83581999000200005
Abstract: this study was conducted to evaluate leaching of herbicides flumioxazin and metribuzin under greenhouse conditions, in a utisol and a oxisol (collected in two differents agricultural regions in the state of minas gerais) soils in two moisture conditions (wet and dry soil). simulation of rainfall ( 45 mm and 90 mm) was done after application of flumioxazin (60 g/ha) and metribuzin (384 g/ha) in columns containing two soils under wet and dry conditions. flumioxazin did not leach beyond 5 cm from the surface when applied in the sandy-loam soil. in the sandy soil, this herbicide reached a depth of 10 cm from the surface in the column. metribuzin presented great mobility in both soils and moisture conditions, reaching depth of 20 cm in wet sandy-loam soil and 45 cm in dry sandy soil.
Atividade dos herbicidas flumioxazin e metribuzin em diferentes solos
Oliveira, Maurílio F. de;Silva, Antnio A. da;Ferreira, Francisco A.;Gomes, Jorge M.;
Planta Daninha , 1998, DOI: 10.1590/S0100-83581998000100004
Abstract: the activity of flumioxazin and metribuzin herbicides was evaluated in four different soils using washed sand. the soils were: an utisol collected in an agricultural region in the state of minas gerais and an oxisol collected in three different agricultural regions; two in the state of minas gerais and one in the state of mato grosso do sul. ten rates of each herbicide were evaluated for each soil in pots, with five replications per treatment. herbicide rates tested and the amount of soil per pot varied with the type of soil being evaluated. the soil moisture content was maintained at soil moisture capacity with simulated rainfalls. the soil type, its physical-chemical properties, and mainly its organic carbon content affected the activity rate of both herbicides. for flumioxazin, the soils with the highest organic carbon content presented the highest values of i50, which means, greater adsorption of the herbicide. meanwhile, for metribuzin, the activity rate was affected by the ph and the organic carbon content of the different soils tested. the results of this study sug gest that the recomendations for use of herbicides should vary according to the type of soil.
Efeito da palha e da mistura atrazine e metolachlor no controle de plantas daninhas na cultura do milho, em sistema de plantio direto
Oliveira Maurílio Fernandes de,Alvarenga Ramon Costa,Oliveira Antnio Carlos de,Cruz José Carlos
Pesquisa Agropecuária Brasileira , 2001,
Abstract: O objetivo deste trabalho foi estudar o efeito de níveis de palha de milho e da mistura formulada atrazine e metolachlor no controle de plantas daninhas na cultura de milho, em sistema de plantio direto. O ensaio foi realizado num Latossolo Vermelho distrófico, argiloso, fase cerrado, sendo a desseca o do mato feita com glyphosate, 15 dias antes do plantio. O delineamento experimental utilizado foi o de blocos ao acaso, com parcelas subdivididas e com três repeti es. Antes do plantio do milho, distribuíram-se cinco níveis de palha de milho (0, 3, 6, 9 e 12 tha-1), nas parcelas, de modo uniforme. Nas subparcelas, após o plantio, foram considerados dois tratamentos referentes a herbicida: ausência de herbicida ou a dose de 6,0 Lha-1 de atrazine, e metolachlor (1.200+ 1.800gha-1). Avaliou-se o número das plantas daninhas, por espécie, aos 26 e 41 dias após o plantio. O número total de plantas daninhas foi reduzido significativamente pelos níveis de palha, independentemente da presen a do herbicida e da época de avalia o. O herbicida n o apresentou efeito significativo na primeira época de avalia o; entretanto, na segunda, a redu o no número total de plantas daninhas foi de, aproximadamente, 53% em rela o às parcelas que n o o receberam. A popula o total de planta daninha foi significativamente superior na segunda avalia o, na ausência do herbicida. Na presen a do herbicida, n o houve diferen a significativa na popula o total de invasoras entre as duas épocas de avalia o.
Retardamento de colheita como método de diferencia??o de genótipos de soja para qualidade de sementes
Lima, Wanderlei Antnio Alves de;Borém, Aluízio;Dias, Denise Cunha Fernandes Santos;Moreira, Maurílio Alves;Dias, Luiz Antnio dos Santos;Piovesan, Neuton Deniz;
Revista Brasileira de Sementes , 2007, DOI: 10.1590/S0101-31222007000100026
Abstract: the experiment was carried out with the objective of evaluating the effect of harvest delay on the differentiation of seed quality in soybean. four different genotypes were utilized: lox-linb (seeds without lipoxygenase and low linolenic acid content); lox+linn (seeds with lipoxygenase and normal linolenic acid content); lox-linn (seeds without lipoxygenase and normal linolenic acid content) and lox+linb (seeds with lipoxygenase and low linolenic acid content). the seeds were harvested at the r8 stage, and at r8+15 days and r8+30 days. seed physiological quality was evaluated by germination, accelerated aging, germination speed, electric conductivity and seedling emergence tests. it was concluded that: the delayed harvest from r8+15 days was efficient to differentiate genotypes for seed physiological quality. genotypes without lipoxygenase showed higher seed physiological quality than genotypes with lipoxygenase.
Correlation between high molecular weight gluten subunits composition and bread-making quality in Brazilian wheat
Schuster, Ivan;Souza, Moacil Alves de;Cardoso, Antnio Américo;Sediyama, Carlos Sigueyuki;Moreira, Maurílio Alves;
Brazilian Journal of Genetics , 1997, DOI: 10.1590/S0100-84551997000400019
Abstract: bread-making quality is one of the most important targets in the genetic improvement of wheat. although extensive analyses of quality traits such as farinography, sodium dodecyl sulfate (sds) sedimentation, alveography, and baking are made in breeding programs, these analyses require high amounts of seeds which are obtained only in late generations. in this experiment the statistical correlations between the high molecular weight subunit of glutenin and bread-making quality measured by alveograph, farinograph and sds sedimentation were evaluated. seventeen wheat genotypes were grown under the same conditions, each producing about 1 kg of seeds for the evaluations. the high molecular weight (hmw) glutenin subunits were analyzed by sds-page. statistical correlations were highly significant between hmw glutenin subunits and alveograph and sds sedimentation. these results indicate the possibility of manipulating major genes for wheat seed quality by coupling traditional breeding with non-destructive single seed analysis. only half seed is necessary to perform the sds-page analysis. therefore, the other half seed can be planted to generate the progeny. seed yield and sds sedimentation were statistically correlated, indicating the possibility of simultaneous selection for both traits
Efeito de diferentes períodos de ocupa??o da pastagem de capim-elefante sobre a produ??o de leite
Cóser, Antnio Carlos;Martins, Carlos Eugênio;Fonseca, Dilermando Miranda da;Salgado, Luís Tarcísio;Alvim, Maurílio José;Teixeira, Flávio Valeriano;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000500018
Abstract: elephant grass (pennisetum purpureum schum. cv. napier) pastures were grazed by lactating dairy cows with the aim of assessing the best grazing period to maximize milk production. three grazing periods (1, 3 and 5 days, with 30 days resting) were tested using a randomized block design, with two replications, during three years. each paddock was grazed by 4 milking cows. during the experimental period, the cows received individually 2,0 kg/day of a concentrate mixture. estimates of forage availability and quality, plant height, ground cover and milk production, were recorded. results showed that available forage and quality and milk production were not influenced by the three different grazing periods. average milk production/cow/day in the rainy season were 10.9, 10.8 and 10.8 kg and the average milk yields per hectare were 7,848, 7,800 and 7,776 kg/ha for 1, 3 or 5 grazing days, respectively (p>0.05). the largest flotations in dairy milk yield per cow occurred in the five grazing days treatment, explained for both forage availability and quality decreases along the grazing period on each paddock.
As elei es legislativas de 1925
António José Queiroz
Revista da Faculdade de Letras : Historia , 2010,
Abstract: The latest elections of the First Republic (November 8, 1925) were played in an atmosphere of great political turmoil, a situation that would not avoid the achievement of electoral agreements between some of the competing forces. In the end, as usual, the Portuguese Republican Party won. The election of deputies both of the Democratic Left and of the Union of Economic Interests was the novelty. In a global view, these elections can be considered “the most fraudulent and shameful” of the First Republic.
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