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Search Results: 1 - 10 of 403496 matches for " Márcio;Arruda "
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Characterization of the Angular Leaf Spot Resistance Gene Present in Common Bean Cultivar Ouro Negro
Demerson Arruda Sanglard,Carlos Alexandre Gomes Ribeiro,Bruno Pereira Balbi,Klever Márcio Antunes Arruda
Journal of Agricultural Science , 2013, DOI: 10.5539/jas.v5n2p19
Abstract: Angular leaf spot (ALS), incited by the fungus Pseudocercospora griseola, is a major disease affecting common bean. Important resistance sources have been identified and characterized: AND 277, BAT 332, Cornell 49-242, MAR-2, and Mexico 54. P. griseola presents high physiological variability. The control of this kind of pathogen requires continuous evaluation, including monitoring and characterization of pathogenic variability, and eventual germplasm introgression of genes in adapted cultivars. Cultivar Ouro Negro is currently being used as an ALS resistance source in Brazil. This work aimed to characterize the ALS resistance gene present in cultivar Ouro Negro in relation to the other five resistance sources. These cultivars were crossed with ‘Ouro Negro’ (allelism tests) and with susceptible cv. Rudá (inheritance studies) and their segregation patterns were evaluated. The inheritance studies and the allelism tests indicate that ‘Ouro Negro’ harbors at least one resistance locus which is distinct from those present in the other resistance sources.
Análise econ?mica de um plantio de teca submetido a desbastes
Tsukamoto Filho, Antonio de Arruda;Silva, Márcio Lopes da;Couto, Laércio;Müller, Marcelo Dias;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000400009
Abstract: this work evaluated the economic viability of a teak plantation (tectona grandis l.f. ) submitted to thinning. the following economic criteria of project analysis were applied: net present value, equivalent annual benefit (cost), internal return rate and land expected value. the discount rate applied was 10% a year. the indicators showed the economic viability of the teak plantation, under the conditions established in the analysis. the plantation will not be viable by reducing 25% of the revenues or increasing 35% of the costs, being more sensitive to the variations in income decrease than to variations in cost increase.
Análise econ mica de um plantio de teca submetido a desbastes
Tsukamoto Filho Antonio de Arruda,Silva Márcio Lopes da,Couto Laércio,Müller Marcelo Dias
Revista árvore , 2003,
Abstract: Neste trabalho estudou-se a viabilidade econ mica de um plantio de teca (Tectona grandis L.f.) submetido a desbastes. Foram utilizados os seguintes critérios de análise econ mica de projetos: valor presente líquido, benefício (custo) periódico equivalente, taxa interna de retorno e valor esperado da terra. A taxa de desconto utilizada foi de 10% a.a. Os indicadores demonstraram a viabilidade econ mica do plantio da teca, conforme as condi es estabelecidas na análise. O plantio será inviável se houver redu o maior que 25% nas receitas ou aumento superior a 35% nos custos, sendo, portanto, mais sensível às varia es na redu o de receitas que às varia es no aumento de custos.
Quantification of fractal dimension and Shannon’s entropy in histological diagnosis of prostate cancer
de Arruda Pedro Francisco Ferraz,Gatti Márcio,Junior Fernando Nestor Facio,de Arruda José Germano Ferraz
BMC Clinical Pathology , 2013, DOI: 10.1186/1472-6890-13-6
Abstract: Background Prostate cancer is a serious public health problem that affects quality of life and has a significant mortality rate. The aim of the present study was to quantify the fractal dimension and Shannon’s entropy in the histological diagnosis of prostate cancer. Methods Thirty-four patients with prostate cancer aged 50 to 75 years having been submitted to radical prostatectomy participated in the study. Histological slides of normal (N), hyperplastic (H) and tumor (T) areas of the prostate were digitally photographed with three different magnifications (40x, 100x and 400x) and analyzed. The fractal dimension (FD), Shannon’s entropy (SE) and number of cell nuclei (NCN) in these areas were compared. Results FD analysis demonstrated the following significant differences between groups: T vs. N and H vs. N groups (p < 0.05) at a magnification of 40x; T vs. N (p < 0.01) at 100x and H vs. N (p < 0.01) at 400x. SE analysis revealed the following significant differences groups: T vs. H and T vs. N (p < 0.05) at 100x; and T vs. H and T vs. N (p < 0.001) at 400x. NCN analysis demonstrated the following significant differences between groups: T vs. H and T vs. N (p < 0.05) at 40x; T vs. H and T vs. N (p < 0.0001) at 100x; and T vs. H and T vs. N (p < 0.01) at 400x. Conclusions The quantification of the FD and SE, together with the number of cell nuclei, has potential clinical applications in the histological diagnosis of prostate cancer.
Analytical quality in environmental studies: uncertainty evaluation of chemical concentrations determined by INAA
Fran?a, Elvis Joacir de;Fernandes, Elisabete A. De Nadai;Bacchi, Márcio Arruda;Saiki, Mitiko;
Brazilian Archives of Biology and Technology , 2006, DOI: 10.1590/S1516-89132006000200016
Abstract: instrumental neutron activation analysis (inaa) is a measurement technique of high metrological level for the determination of chemical elements. in the context of biota/fapesp program, leaves of trees have been evaluated by inaa for biomonitoring purposes of the atlantic forest. to assure the comparability of results in environmental studies, a leaf sample of marlierea tomentosa (myrtaceae family) showing the lowest concentrations of chemical elements was selected for the evaluation of analytical quality of the determination under unfavorable conditions. nevertheless, the homogeneity of chemical concentrations of sample at the 95% of confidence level has been achieved and inaa has presented repeatability of 2% for the determination of br, co, cs, fe, k, na, rb and sr, the uncertainty could have been overestimated. for the evaluation of uncertainty due to the variability of chemical concentrations in the sample, jackknife and bootstrap methods were used to estimate the maximum expected percent standard deviation. the uncertainty budget was considered adequate for the reporting chemical concentrations of environmental samples determined by inaa.
Redes dinamicas cognitivas aplicadas no controle supervisório de um fermentador
Mendon?a, Márcio;Arruda, L. V. R.;Neves-Jr, Flávio;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2011, DOI: 10.1590/S0103-17592011000400003
Abstract: this paper uses dynamic cognitive networks (dcn) as an intelligent tool for supervisory control. the dcns are an evolution of fuzzy cognitive maps (fcm). intelligent systems and tools use expert knowledge to build models with inference and / or decision taking abilities. a supervisory control architecture for an alcoholic fermentation process is developed from the acquisition of empirical knowledge from an expert. the objective of the supervisor is to operate the process in normal and critical situations. for this, we propose the use of a dcn model with new types of concepts and relationships that not only represent cause-effect as in fcm models. simulation results are presented to validate the architecture developed.
Uma entrevista com Ademir Roberto Brunetto An interview with Ademir Roberto Brunetto
Deocleciano da Silva Carvalho,Luís Ant?nio de Arruda Aidar,Márcio Sobral,Luciano Castellucci
Dental Press Journal of Orthodontics , 2010, DOI: 10.1590/s2176-94512010000300004
Abstract:
Análise das disparidades regionais do setor agropecuário brasileiro, 1995 a 2005
Filipe de Morais Pessoa,Marilia Fernandes Maciel Gomes,Márcio Ant?nio Salvato,Daniel Arruda Coronel
Estudos do CEPE , 2009,
Abstract: O setor agropecuário tem apresentado crescimento econ mico significativo no período pós Plano Real, no entanto, resta saber se tal crescimento tem implicado em diminui o das disparidades existentes entre os estados brasileiros. Nesse sentido, o objetivo do presente artigo é analisar a convergência do Produto Interno Bruto (PIB) agropecuário per capita para os estados no período 1995-2005, buscando mapear se há tendência de redu o das disparidades existentes entre estes. A metodologia utilizada é o processo estacionário de primeira ordem, de Markov. Os resultados mostram a existência de três classes de convergência de PIB agropecuário per capita. No longo prazo, a hipótese de convergência absolutan o se mantém, visto que 66,67% dos estados estar o em uma classe inferior à média brasileira; 22,22%, em uma classe intermediária acima da média; e 11,11%, em uma classe superior acima da média. Abstract The farming sector has been presenting economical significant growth in the period post Real Plan; however, it is necessary to know if such growth has resulted in reduction of the existent disparities between the Brazilian States. In this sense, the objective of the present article is to analyse the convergence of the farming Gross Domestic Product (GDP) per capita for the States during the period 1995-2005, searching if there is a tendency of reduction of the existent disparities between them. The methodology is the stationary process of first order from Markov. The results show the existence of three classes of farming GNP convergence per capita. In long term, the hypothesis of absolute convergence is not maintained, so 66,67 % of the States will be in an inferior class to the Brazilian average, 22,22 % will be in an intermediary class above the average and 11,11 % will be in a superior class above the average.
Radiological impact of phosphogypsum surface application in a no-till system in Southern Brazil
Dias, Nivea Maria Piccolomini;Caires, Eduardo Fávero;Pires, Luiz Fernando;Bacchi, Márcio Arruda;Fernandes, Elisabete Aparecida de Nadai;
Pesquisa Agropecuária Brasileira , 2010, DOI: 10.1590/S0100-204X2010001200017
Abstract: the objective of this work was to determine the impact of phosphogypsum application on 226ra and 228ra activities in the soil and on their accumulation in soybean grains. a field experiment was carried out in paraná state, brazil, on a loamy typic hapludox, under no-till system, with increasing phosphogypsum rates: 4, 8, and 12 mg ha-1. gamma ray spectrometry was carried out using hpge detectors with 45 and 10% relative efficiencies, for soybean grains and soil, respectively. no increment of 226ra and 228ra activities was observed due to the increase in phosphogypsum rates in the soil, and a small reduction was noticed in the grains. average values found for 226ra and 228ra activities were 37 and 57 bq kg-1 in the soil and 1.44 and 3.19 bq kg-1 in soybean grains. the application of phosphogypsum for no-till soybean production is a safe practice regarding the risks of radiation damage to human health
Diferentes critérios de inclus o amostral e suas interpreta es: estudo de caso em floresta estacional decidual
Daniel Meira Arruda,Márcio Luiz Batista,Marcos Vinicius Ribeiro de Castro Sim?o,Reinaldo Duque-Brasil
Pesquisa Florestal Brasileira , 2012,
Abstract: As florestas estacionais deciduais (FEDs), amplamente distribuídas no Brasil, s o forma es sujeitas a diferentes métodos de inventários. Consequentemente, os dados gerados podem afetar a compara o com outras forma es vegetais. Este estudo apresenta e discute altera es proporcionadas pela amostragem da vegeta o utilizando circunferência ao nível do solo (CNS) ≥ 10 cm e circunferência à altura do peito (CAP) ≥ 15 cm, em fragmentos de FED. O uso de diferentes critérios proporciona uma vis o ambígua de um mesmo fragmento florestal, manifestada pelas diferen as em sua estrutura horizontal e riqueza de espécies. The dry forests, widely distributed in Brazil, are formations subject to different sampling method. Consequently, the data generated may affect the comparison among other vegetation formations. Therefore, this study presents and discusses changes caused by sampling vegetation using circumference at soil height (CSH) ≥ 10 cm and circumference at breast height (CBH) ≥ 15 cm. Different criteria provide an ambiguous vision of a same forest fragment, resulting in different structure and species richness.
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