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Search Results: 1 - 10 of 452193 matches for " Cássio;Amaral Júnior "
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Sele o de pré-cultivares de milho-pipoca baseado em índices n o-paramétricos Selecting pre-cultivars of popcorn maize based on nonparametric indices
Cássio Vittorazzi,Antonio Teixeira do Amaral Júnior,Leandro Sim?es Azeredo Gon?alves,Liliam Silvia Candido
Revista Ciência Agron?mica , 2013,
Abstract: O presente trabalho teve como objetivo fazer uma sele o prévia de pré-cultivares de milho-pipoca para o registro no MAPA, com base em diferentes caracteres, utilizando o índice de Garcia e o de soma de classifica o, priorizando-se o rendimento de gr os e capacidade de expans o. Foram avaliados 16 genótipos de milho-pipoca, sendo oito variedades de poliniza o aberta (BRS Angela, UFVM2 - Bar o de Vi osa, Vi osa, Beija-Flor, SAM, UNB2U-C3, UNB2U-C4 e UNB2U-C5) e oito híbridos (Zelia, Jade, IAC 112, P1 x P3, P1 x P7, P2 x P4, P2 x P9 e P3 x P7), em cinco ambientes. O delineamento experimental adotado foi blocos ao acaso, com três repeti es, tendo sido avaliadas as características altura de planta, estande, tombamento, capacidade de expans o e rendimento de gr os. Os efeitos dos genótipos e ambientes foram significativos para todas as características, enquanto que suas intera es o foram apenas para tombamento e rendimento de gr os. Os índices de Garcia e da soma de classifica o foram positivamente correlacionados na classifica o dos genótipos, ambos permitindo indicar as pré-cultivares UNB2U-C5 e P1 x P7 como as de melhor desempenho para regi es Norte e Noroeste do Estado do Rio de Janeiro. The present study aimed to select pre-cultivars of popcorn maize for registration in MAPA based on different characteristics, using the Garcia and total-classification indices, giving priority to grain yield and expansion capacity. Sixteen genotypes of popcorn maize: eight open-pollinated varieties (BRS Angela, UFVM2 - Bar o de Vi osa, Vi osa, Beija-Flor, SAM, UNB2U-C3, UNB2U-C4 and UNB2U-C5) and eight hybrids (Zelia, Jade, IAC 112, P1 x P3, P1 x P7, P2 x P4, P2 x P9 and P3 x P7) were evaluated in five environments. The experimental design was of randomized blocks with three replications, where the characteristics of plant height, growth, droop, expansion capacity and grain yield were evaluated. The effects of genotype and environment were significant for all characteristics, while their interactions were only significant for droop and grain yield. The Garcia and the total-classification indices correlated positively in the classification of genotypes, both indicating the pre-cultivars UNB2U-C5 and P1 x P7 as having the best performance for regions in the north and northwest of the state of Rio de Janeiro.
Sele??o de pré-cultivares de milho-pipoca baseado em índices n?o-paramétricos
Vittorazzi, Cássio;Amaral Júnior, Antonio Teixeira do;Gon?alves, Leandro Sim?es Azeredo;Candido, Liliam Silvia;Silva, Thiago Rodrigues da Concei??o;
Revista Ciência Agron?mica , 2013, DOI: 10.1590/S1806-66902013000200019
Abstract: the present study aimed to select pre-cultivars of popcorn maize for registration in mapa based on different characteristics, using the garcia and total-classification indices, giving priority to grain yield and expansion capacity. sixteen genotypes of popcorn maize: eight open-pollinated varieties (brs angela, ufvm2 - bar?o de vi?osa, vi?osa, beija-flor, sam, unb2u-c3, unb2u-c4 and unb2u-c5) and eight hybrids (zelia, jade, iac 112, p1 x p3, p1 x p7, p2 x p4, p2 x p9 and p3 x p7) were evaluated in five environments. the experimental design was of randomized blocks with three replications, where the characteristics of plant height, growth, droop, expansion capacity and grain yield were evaluated. the effects of genotype and environment were significant for all characteristics, while their interactions were only significant for droop and grain yield. the garcia and the total-classification indices correlated positively in the classification of genotypes, both indicating the pre-cultivars unb2u-c5 and p1 x p7 as having the best performance for regions in the north and northwest of the state of rio de janeiro.
Avan?os logísticos no varejo nacional: o caso das redes de farmácias
Machline, Claude;Amaral Júnior, José Bento C.;
Revista de Administra??o de Empresas , 1998, DOI: 10.1590/S0034-75901998000400008
Abstract: this paper describes recent logistics developments observed in retail operations of pharmaceutical products in brazil. most pharmacies restructured themselves in chains. they improved their physical appearance. some operate full-time. they rely upon advanced software and use refined formulas, based upon the best theory, to manage inventories. the central storage areas are well administered; a couple of them are automated; deliveries to stores are made daily; bar coding helps controlling product flow. a score of problems still hampers the obtainment of an authentic just in time result and a real zero-shortage situation: data bases lack capacity to register all the necessary information concerning 5,000 different items in 100 outlets; barriers persist between sales and purchasing departments; deliveries by suppliers to the central store are not as frequent and quick as desirable, so are deliveries to retail stores; harmful to efficiency is the presence of quite a number of low turnover, slow moving medicaments. recommendations are offered in order to foster the still remote implementation of the dreamed supply chain management.
Components of the production in soybean cultivars with determinate and indeterminate growth Componentes da produ o em cultivares de soja com crescimento determinado e indeterminado
Luiz Junior Perini,Nelson da Silva Fonseca Júnior,Deonisio Destro,Cássio Egidio Cavenaghi Prete
Semina : Ciências Agrárias , 2012,
Abstract: The obtain more productive soybean cultivars is increasingly difficult, due to high levels of productivity has already achieved for this legume. The work had as objective to evaluate the components of the production of soybean cultivars of determinate and indeterminate growth, aiming the indirect selection for major productivity of grains. Three cultivars of soybean with type determinate of growth and four with type indeterminate were evaluated, in the agricultural year 2009/2010. The experimental design was randomized blocks with four replications and seven treatments (cultivars). The characteristics analyzed were: plant height, number of nodes per plant, number of pods and grains per plant, grain yield per plant, grain yield components in the last four nodes; thousand grain mass, plant fresh mass; harvest index, number of branches and pods on the branches. We have used analysis of variance in randomized blocks with information within the plot. The differences among average have been compared by Tukey test at 5% probability. The phenotypic variances and covariances obtained by ANOVA generated the phenotypic matrix of correlation among traits. Following has been realized the path analysis. Cultivars with type determinate of growth and indeterminate don’t differ as to the components of production, differ only for height at maturity. But the criterions used for selection should not be the same between the two types of cultivars. The number of pods total and number of pods on branches for cultivars with determinate growth and the harvest index for indeterminate showed the most importance for indirect selection of cultivars more productive. Independent of the type of growth, the number of grains per plant is directly related with the maximum productivity in soybean. A obten o de cultivares de soja mais produtivas esta cada vez mais difícil, devido aos altos níveis de produtividade já alcan ados para esta leguminosa. O trabalho teve como objetivo avaliar os componentes da produ o de cultivares de soja de crescimento determinado e indeterminado, visando a sele o indireta para maior produtividade de gr os. Três cultivares de soja com tipo de crescimento determinado e quatro com tipo indeterminado foram avaliadas, no ano agrícola de 2009/2010. O delineamento experimental empregado foi blocos casualizados, com quatro repeti es e sete tratamentos (cultivares). As características analisadas foram: altura da planta; número de nós por planta; número de vagens e gr os por planta; produtividade de gr os por planta; componentes da produtividade de gr os nos quatro ú
Variabilidade espacial da resistência do solo à penetra??o e da taxa de estratifica??o de carbono organico do solo em um Latossolo Vermelho eutroférrico
Fidalski, Jonez;Tormena, Cássio Antonio;Gon?alves, Antonio Carlos Andrade;Oliveira Júnior, Rubem Silvério;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000600016
Abstract: the compaction and the quality of the soil are constantly questioned for the definition of the no-till soil management. this study was aimed at evaluating the spatial variability of the soil resistance to penetration, bulk density and soil organic carbon stratification ratio in layers on a clayey typic eutrothox, in contiguous areas of no-tillage with rotation of cultures and no-tillage with succession of cultures associated the chiselling. the study was set up from may to june of 2002, in palotina, west region of the state of parana, brazil. the samples for determination the soil bulk density, soil resistance to penetration and soil organic carbon stratification ratio were obtained in 120 points in 2 x 5m grid, in the 0.40m depth. soil resistance to penetration measures were made three times, in a period of 10 days, initiate after having interrupted precipitation. the soil bulk density did not explain the spatial dependence of the compaction of the soil. the soil resistance to penetration and soil organic carbon stratification ratio presented range of 17m. the temporal variation of the spatial dependence of the soil resistance to penetration happens in the 0.05-0.20m layers. similares spatial e dependence of the soil resistance to penetration and soil organic carbon stratification ratio reveals the importance of the quality of the soil in the spatial and temporary stabilization of the compaction of the soil expresses for the soil resistance to penetration in no-tillage systems.
Agronomic performance and grain yield in early common bean genotypes in Paraná state/ Adaptabilidade e estabilidade produtiva em genótipos precoces de feij o no estado do Paraná
Juliana Sawada Buratto,Vania Moda-Cirino,Nelson da Silva Fonseca Júnior,Cássio Egidio Cavenagui Prete
Semina : Ciências Agrárias , 2007,
Abstract: In the development of early beans cultivars it is very important high grain yield and predictable behavior. The objective of this work was to assess adaptability and phenotypic stability grain yield in early common bean genotypes. The experiments were conducted in two cropping season in the following counties: Londrina, Irati, Pato Branco and Capit o Leonidas Marques (wet season 2004/2005); Pato Branco and Ponta Grossa (dry season 2005). Complete randomized block with three replications was used. In the maturation stage (R9) grain yield were assessed and the data were transformed to kg.ha-1 and corrected for 13% humidity. The individual and combined variance analyses indicated significant differences among genotypes. The genotype x environmental interaction was significant considering 1% probability, revealing that the genotypes evaluated performed differently according to the environment where the tests were done. The lines LPSIA 04 103, LPSIA 04 105 and LPSIA 04 107 showed general adaptability (b1i=1), high phenotypic stability (s2di=0), and superior average yield. No desenvolvimento de cultivares de feij o precoce é imprescindível que este apresente elevado rendimento de gr os e comportamento previsível. O objetivo deste trabalho foi avaliar a adaptabilidade e a estabilidade fenotípica para rendimento de gr os em genótipos de feij o precoce. Na safra das águas 2004/2005, foram conduzidos experimentos em: Londrina, Irati, Pato Branco e Capit o Le nidas Marques. Na safra da seca/2005, os experimentos foram conduzidos em Pato Branco e Ponta Grossa. O delineamento experimental utilizado foi o de blocos casualizados com três repeti es e parcelas de duas fileiras de 5 m espa adas 0,5 m e com uma popula o de 15 plantas por metro linear. No estádio de matura o fisiológica (R9), foi avaliado o rendimento total dos gr os por parcela sendo esses dados transformados para kg.ha-1 e corrigidos para 13% de umidade. As análises de variancia individuais e análise conjunta dos locais revelaram diferen as significativas entre os genótipos estudados. A intera o genótipos por ambiente foi significativa a 1% de probabilidade, demonstrando que os genótipos avaliados apresentaram respostas diferenciadas nos diversos ambientes em que foram avaliados. As linhagens LPSIA 04 103, LPSIA 04 105 e LPSIA 04 107 foram consideradas promissoras por apresentarem ampla adaptabilidade (b1i=1), alta estabilidade (s2di=0) e boa produtividade de gr os.
Consciência situacional, tomada de decis?o e modos de controle cognitivo em ambientes complexos
Henriqson, éder;Carim Júnior, Guido César;Saurin, Tarcísio Abreu;Amaral, Fernando Gon?alves;
Produ??o , 2009, DOI: 10.1590/S0103-65132009000300002
Abstract: this work aims to analyze situation awareness, natural decision-making processes and cognitive control modes used by airplane pilots in a flight simulator experiment. in this way, different situations during flight simulation were considered in order to study the crew's situation awareness and natural decision-making. the participants' actions were investigated and classified according to the cognitive control model proposed. results suggest that context complexity factors affect difficulty management, influencing situation awareness, decision-making and pilots' cognitive control modes.
Atributos químicos e físicos de um Latossolo Amarelo cultivado com feij o-caupi sob diferentes sistemas de irriga o Physical and chemical attributes of an Oxisoil cultivated with cowpea bean under different irrigation systems
Francisco H. C. Amaral,Gabriel B. da Silva Júnior,Júlio C. A. Nóbrega,Elaine M. da Costa
Revista Brasileira de Ciências Agrárias , 2011, DOI: 10.5039/agraria.v6i3a1155
Abstract: A utiliza o agrícola dos solos em áreas irrigadas, empregando técnicas de manejo pouco sustentáveis, pode promover altera es nos atributos físicos e químicos dos solos com reflexos negativos na produtividade das culturas. O objetivo desse estudo foi verificar as altera es nas propriedades químicas e físicas de um Latossolo Amarelo Distrófico cultivado com feij o-caupi [Vigna unguiculata (L.) Walp], sob dois sistemas de irriga o, no Perímetro Irrigado Gurguéia, município de Alvorada do Gurguéia, Estado do Piauí, Brasil. Os tratamentos foram constituídos por dois sistemas de irriga o (uma área com histórico de irriga o por piv central e outra por aspers o convencional), uma área com vegeta o nativa, para efeito comparativo, e quatro profundidades. As áreas irrigadas apresentaram modifica es nas condi es de fertilidade do solo em rela o à área de mata nativa, com aumentos dos valores de soma de base, capacidade de troca de cátions efetiva e potencial e satura o por bases. Diferen as nas condi es físicas do solo foram observadas nas duas áreas irrigadas em rela o à mata nativa, sendo mais acentuadas na área irrigada por piv central. Agricultural land use in irrigated areas, using management techniques of low sustainability, can promote changes in the physical and chemical soil properties, with negative effects on crop productivity. The aim of this study was to evaluate changes in the chemical and physical properties of an Oxsoil cultivated with cowpea bean [Vigna unguiculata (L.) Walp], under two irrigation systems, at Gurgueia Irrigated Perimeter, municipality of Alvorada do Gurguéia, Piauí State - Brazil. Treatments consisted of two irrigation systems (an area with a history of central pivot irrigation and the other with sprinkler irrigation), an additional area with native vegetation, for comparison purposes, and four depths. Irrigated areas showed changes in the soil fertility conditions in relation to the native forest area, with increased values of bases sum, effective and potential cations exchange capacity and saturation per bases. Differences in the soil physical conditions were observed in both irrigated areas in comparison to the native forest, and were more accentuated in the area irrigated by center pivot.
Modelling Fire Frequency in a Cerrado Savanna Protected Area
Alfredo C. Pereira Júnior, Sofia L. J. Oliveira, José M. C. Pereira, Maria Antónia Amaral Turkman
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0102380
Abstract: Covering almost a quarter of Brazil, the Cerrado is the world’s most biologically rich tropical savanna. Fire is an integral part of the Cerrado but current land use and agricultural practices have been changing fire regimes, with undesirable consequences for the preservation of biodiversity. In this study, fire frequency and fire return intervals were modelled over a 12-year time series (1997–2008) for the Jalap?o State Park, a protected area in the north of the Cerrado, based on burned area maps derived from Landsat imagery. Burned areas were classified using object based image analysis. Fire data were modelled with the discrete lognormal model and the estimated parameters were used to calculate fire interval, fire survival and hazard of burning distributions, for seven major land cover types. Over the study period, an area equivalent to four times the size of Jalap?o State Park burned and the mean annual area burned was 34%. Median fire intervals were generally short, ranging from three to six years. Shrub savannas had the shortest fire intervals, and dense woodlands the longest. Because fires in the Cerrado are strongly responsive to fuel age in the first three to four years following a fire, early dry season patch mosaic burning may be used to reduce the extent of area burned and the severity of fire effects.
Determina??o da massa específica de silagens de milho por método indireto
Silva, Michele Simili da;Jobim, Clóves Cabreira;Tormena, Cássio Antonio;Calixto Júnior, Moyses;Soriane Filho, Jose Luis;Roman, Juliano;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011005000114
Abstract: an alternative method to estimate the specific mass (sm) of silage were evaluated in two studies with corn silages in trench silos. the values of penetrometer resistance were correlated with the sm values obtained with the use of sampling by a metal cylinder and the sm of the silage was estimated by means of regression. since there was a high positive relationship of penetration resistance of the metallic cone and sm estimated with sm observed, the penetrometer can be used as indirect method for determining the sm of corn silage.
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