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Search Results: 1 - 10 of 7850 matches for " Xavier Aloísio "
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Organogênese de explante foliar de clones de Eucalyptus grandis x E. urophylla
Alves, Elisa Cristina Soares de Carvalho;Xavier, Aloísio;Otoni, Wagner Campos;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000500003
Abstract: the aim of this work was to evaluate the effects of growth regulators tdz [1-phenil-3-(1,2,3-thiadiazol-5-yl) urea], bap (6-benzilaminopurine) e naa (naphthalene acetic acid) on the in vitro propagation by organogenesis from foliar explants of eucalyptus grandis x e. urophylla. depending on the clone used, there were singular responses to growth regulators treatment regarding callusing intensity, texture and color. the best results of the three genotypes used were observed with the tdz (0.5 mg l-1) and naa (0.1 mg l-1) treatment, where 100% of the foliar explants presented callus. the worst results were observed with the bap (0.1 mg l-1) and naa (0.1 mg l-1) treatment. subsequently, considering the regeneration process, the best response was achieved with 1.0 mg l-1 bap, in which 8% of the calli regenerated buds, with an average of 4.2 buds per explant.
Parametros morfológicos na avalia??o de qualidade de mudas de Eucalyptus grandis
Gomes, José Mauro;Couto, Laércio;Leite, Helio Garcia;Xavier, Aloísio;Garcia, Silvana Lages Ribeiro;
Revista árvore , 2002, DOI: 10.1590/S0100-67622002000600002
Abstract: an experiment was carried out to study the morphological parameters used to evaluate the quality of eucalyptus grandis seedlings producedin different tube sizes. a mixture of 80% organic compound (co) and 20% charcoal powder fertilized with and without n, p and k was used as substrate. four sizes of hard plastic tubes at the volumes of 50, 110, 200 and 280 cm3 were used as packaging. height and height/weight relationship of the aerial part dry matter should be considered, since although providing a satisfactory contribution to seedling quality pattern, the parameters did not present a destructive process. the use of height only to estimate the quality of eucalyptus grandis seedlings in the 110 cm3 volume tube when they were 90-day old should be used, since it presents a satisfactory relative contribution, besides being a nondestructive, easily determined and measured parameter.
Otimiza??o do tempo necessário para o enraizamento de miniestacas de clones híbridos de Eucalyptus grandis
Melo, Lucas Amaral de;Xavier, Aloísio;Paiva, Haroldo Nogueira de;Borges, Silvano Rodrigues;
Revista árvore , 2011, DOI: 10.1590/S0100-67622011000500001
Abstract: each phase in the minicutting process is essential for the success of the seedling production. the objective of this study was to assess the time for rooting in minicuttings of five eucalyptus grandis hybrid clones and to adjust models that best express the behavior of the genetic materials during the rooting process. the minicutting rooting process was carried out in a acclimatized greenhouse and at three-day intervals, adventitious rooting was evaluated until the 24th day. by the analyses, it was possible to verify peculiarities in relation to the behavior of each clone during the rooting period and to conclude that the necessary time for the process differs among the genetic materials, allowing the identification of the best rooting point of minicuttings.
Efeito dos cofatores hidroquinona, prolina e triptofano no enraizamento de miniestacas de clones de Eucalyptus grandis x E. urophylla
Goulart, Patrícia Bueno;Xavier, Aloísio;Dias, José Maria Moreira;
Revista árvore , 2011, DOI: 10.1590/S0100-67622011000600007
Abstract: the objective of the present work was to evaluate the efficiency of the hydroquinone, proline and tryptophane cofactors, associated with iba growth regulator on vegetative propagation by the rooting of mini-cuttings of four clones of eucalyptus grandis x e. urophylla. the mini-cuttings were collected in a mini-clonal hedge grown in a hydroponic system in small gutters. it was used a complete random experimental design, with four replicates and plots of 16 plants per replicate. evaluations of rooted mini-cuttings were carried out in a greenhouse, in a shade house and in the open sun. it was concluded that the tryptophane (0.80 mg l-1) and hydroquinone (0.20 to 0.40 mg l-1) used in association to iba, improved the rooting in three out of four evaluated clones whereas proline (0.20 to 0.40 mg l-1) associated to iba improved significantly rooting of the four studied clones, proving to be among the most efficient cofactors.
Simulated annealing aplicado à resolu o do problema de roteamento de veículos com janela de tempo
Aloísio de Castro Gomes Júnior,Marcone Jamilson Freitas Souza,Alexandre Xavier Martins
Transportes , 2009,
Abstract: Este trabalho apresenta um algoritmo eficiente, baseado na metaheurística Simulated Annealing (SA), para resolver o Problema de Roteamento de Veículos com Janela de Tempo. Esse problema tem como objetivo determinar as rotas de custo mínimo para uma frota de veículos de mesma capacidade, atendendo à demanda de um conjunto de clientes, para os quais o atendimento somente é possível dentro de um intervalo de tempo determinado, chamado janela de tempo. A metodologia proposta, denominada SA-RAI, incorpora ao algoritmo Simulated Annealing clássico, mecanismos auto-adaptativos para determina o da temperatura inicial e número de itera es em uma mesma temperatura. Nesta metodologia, quando a temperatura atinge um valor limiar, a mesma é reaquecida um certo número de vezes, possibilitando escapar de ótimos locais. Além disso, ela conta com uma fase de intensifica o. Sempre que uma melhor solu o é encontrada, ela é submetida a um procedimento de refinamento, visando ao seu melhoramento. A metodologia foi aplicada a 168 problemas-teste da literatura e 13 novos melhores resultados foram encontrados.
Parametros morfológicos na avalia o de qualidade de mudas de Eucalyptus grandis
Gomes José Mauro,Couto Laércio,Leite Helio Garcia,Xavier Aloísio
Revista árvore , 2002,
Abstract: Este experimento foi instalado com o objetivo de estudar os parametros morfológicos nas avalia es da qualidade de mudas de Eucalyptus grandis produzidas em diferentes tamanhos de tubetes. O substrato utilizado foi uma mistura de 80% de composto organico (CO) e de 20% de moinha de carv o (MC), adubados com a presen a e ausência dos elementos N, P e K. Como embalagens foram utilizados quatro tamanhos de tubetes de plástico rígido, com volumes de 50, 110, 200 e 280 cm3. A ado o da altura e da rela o altura/peso de matéria seca da parte aérea deve ser considerada, por terem sido estes os parametros que apresentaram boa contribui o relativa à qualidade das mudas, sem contudo ser um processo destrutivo. A ado o somente da altura para estimar a qualidade de mudas, aos 90 dias de idade no tubete de 110 cm3 de volume, poderá ser utilizada por apresentar boa contribui o relativa e por ser um parametro de fácil determina o e n o ser um método destrutivo, além de sua medi o ser muito fácil.
Sele??o de genitores de Eucalyptus grandis e de Eucalyptus urophylla para produ??o de híbridos interespecíficos utilizando REML/BLUP e informa??o de divergência genética
Rocha, Maria das Gra?as de Barros;Pires, Ismael Eleotério;Rocha, Rodrigo Barros;Xavier, Aloísio;Cruz, Cosme Dami?o;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000600001
Abstract: predicted parental genetic values of 363 half-sib eucalyptus grandis and 245 half-sib e. urophylla progenies were evaluated for selection to produce interspecific hybrids in controlled crosses in a circulating diallel. the essays were conducted in guanh?es, minas gerais, in a complete randomized block design in five replications, row plots of six e. urophylla and eight e. grandis plants in 3.0 x 2.0 m spacing. the genetic parameters were estimated by mixed models using the reml / blup (restricted maximum likelihood / best linear unbiased prediction) procedure for diameter at breast height (dbh), total height (th) and individual volume (vol) traits. the genetic values were only predicted for diameter at breast height (dbh), to which the selection was performed. the estimated heritability values in the restricted sense for eucalyptus urophylla were 0.2785 and for accuracy 61%, and 0.2247 and 53% in eucalyptus grandis, respectively. selection of 100 parents of each species individually will provide genetic gains of 20.6 % in eucalyptus urophylla and of 16.4 % in eucalyptus grandis. a genetic gain for diameter at breast height around 35.0% can be obtained by crosses among the first 10 selected individuals of each species and carriers of the greatest genetic divergences.
Novas fontes de resistência do feijoeiro comum à mancha angular
Sartorato, Aloísio;
Fitopatologia Brasileira , 2006, DOI: 10.1590/S0100-41582006000200012
Abstract: twenty-eight bean genotypes and lines from the embrapa arroz e feij?o breeding program, and other research institutions, were evaluated for angular leaf spot reaction to eight pathotypes of phaeoisariopsis griseola. genotypes were inoculated 14-16 days after sowing by spraying an inoculum suspension containing 2.0 x 104 spores ml-1. symptoms were evaluated 14-18 days after inoculation according to a 1-9 scale where disease ratings from 1 to 3 were considered resistant and 4 to 9 as susceptible. genotypes 'ouro negro' and 'lm 202202530' were resistant to eight and seven pathotypes, respectively. cultivar brs requinte was resistant to five pathotypes and cultivars brs pontal and cornell 49-242 were resistant to only four pathotypes.
La cultura del consumo y las desigualdades: Nuevos lenguajes e implicaciones para la educación
Ruscheinsky,Aloísio;
Paradígma , 2010,
Abstract: different languages correspond to dated historical circumstances and likewise, have a relative autonomy of the respective contexts of relevance to redouble an approach from the social sciences. this paper aims to highlight the languages of applicants and inequalities in consumption and its implications for the field of education. we start from the presupposition that different languages are anchored economically, socially referenced, politically detailed, culturally legitimized. among the main theoretical contributions have been considered the circumstances in which consumer culture is linkages with the formation of new languages, including the protection of consumer goods and seduced by the language in the face of new social and environmental risks. the innovations of the forms of expression through language as manifested in the tension between access to consumption, inequality and persistent demand for individual safety the exposure is divided in four sections that highlight topics relevant to the genesis and current circumstances of the conduct in different languages of a consumer culture emerging in the midst of a society with persistent inequalities.
Transi??o tecnológica em uma operadora de plano de saúde: o olhar do usuário
Cuginotti, Aloísio Punhagui;
Physis: Revista de Saúde Coletiva , 2011, DOI: 10.1590/S0103-73312011000100010
Abstract: the brazilian supplemental health care sector has been experiencing new health care models in the last few years. this paper aims at featuring how users perceive and how they express themselves in relation to the deployment of a program known as family health strategy (fhs) by a self-management health care provider. through focal groups, the research reveals that users present a rather clear view on the meaning of strategy, including its remarkable rationalizing elements. in addition, they percept contradictions as well as deficiencies in the formulation and deployment process, and they keep a high level of autonomy in the choice for more adequate services, which are greatly influenced by the type of insertion that they exert in the bank institution that maintains the health care service provider. users also perceive the predicament presented by self-management regarding the maintenance of a broad authorized free access network and the advance towards turning fhs into the structuring backbone of its assistance network.
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