Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 3 )

2019 ( 18 )

2018 ( 34 )

2017 ( 21 )

Custom range...

Search Results: 1 - 10 of 21085 matches for " Rinaldo Luiz Caraciolo; "
All listed articles are free for downloading (OA Articles)
Page 1 /21085
Display every page Item
Avalia??o de testes estatísticos de compara??es múltiplas de médias
Sousa, Clayton Albuquerque de;Lira Junior, Mario Andrade;Ferreira, Rinaldo Luiz Caraciolo;
Revista Ceres , 2012, DOI: 10.1590/S0034-737X2012000300008
Abstract: the objective was to verify the efficiency and uniformity of responses from different tests to compare means and the rate of occurrence of type i error. four different tests for multiple comparison of means were applied to 200 experiments and 10 variables created with random values, to assess the number of levels; agreement with the f test and rate of occurrence of type i error per variable and per experiment. the tests differed in their results for all variables. the greatest divergences in results were found when using the lsd test. for the level of significance, the greatest agreement was found by the tukey test.
Germina??o de sementes de Adenanthera pavonina L. em fun??o de diferentes temperaturas e substratos
Souza, Ednaldo Bezerra de;Pacheco, Mauro Vasconcelos;Matos, Valderez Pontes;Ferreira, Rinaldo Luiz Caraciolo;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000300009
Abstract: this work studied the germination of a. pavonina seeds in different conditions of temperature regime and substrate. the experiment was arranged in a 6 x 5 factorial, complete randomized design (6 substrates - sowing in and on: coconut fiber, sand and vermiculite; and 5 temperatures: 25, 30, 35, 20-30 and 20-35oc), with four replications with 25 seeds each. the following parameters were analyzed: germination (%), first germination count (%), index of germination speed, length (cm/seedling) and dry matter weight (mg/seedling). the best results of germination were obtained at 30 and 35oc in all substrates. coconut fiber and sand substrates allowed satisfactory germinative performance, proving to be suitable for the evaluation of the physiological quality of a. pavonina seeds.
Modelo para calculo estimación del carbono en Tipo Forestal Roble-Raulí-Coigüe en la Reserva Nacional Malleco: Chile
Moreno Garcia, Norman;Herrera Machuca, Miguel Angel;Ferreira, Rinaldo Luiz Caraciolo;
Revista árvore , 2011, DOI: 10.1590/S0100-67622011000700016
Abstract: the aim of this work is the selection of a model for estimation of carbon in forest type roble-raulí and coigüe. the compilation of information was performed in the malleco national reserve. every site was represented by a group of 5 plots (squared, sides 35m, surface 1225m2), located in a transect according to the greatest slope. the volumes of wood were estimated with and without bark of the individuals totality by means of functions for every species of the forest type in the study. the quantity of carbon stored at the shaft level of the plots was estimated by applying the universal function of carbon. in every plot the trees were assessed by a diametric class of dap, being defined as the classes from the minimal dap of 3 cm and with an extent of 5 cm. the models of spurr, meyer, stoate, naslund and schumacher-hall were adjusted accordingly. the schumacher-hall model presented the best adjustment according to the considered statistical indicators, besides a better residual distribution.
Ecological succession of a stretch of Dense Rain Forest in the Lowlands, Carauari, Amazonas, Brazil Sucess o ecológica de um trecho de Floresta Ombrófila Densa de Terras Baixas, Carauari, Amazonas
Rosival Barros de Andrade Lima,José Ant?nio Aleixo da Silva,Luiz Carlos Marangon,Rinaldo Luiz Caraciolo Ferreira
Pesquisa Florestal Brasileira , 2011, DOI: 10.4336/2012.pfb.67.161
Abstract: This work was carried out in a stretch of Dense Rain Forest in the lowland county of Carauari, Amazonas, aiming to estimate the species composition of tree layer and classify the species in their ecological groups in order to obtain information about the current situation of the forest fragment, to be the basis for strategies for conservation and preservation as well as the basis for formulating research aimed at the dissemination of knowledge and its application to sustainable production. The forest inventory was conducted in an area of 275 ha, crossed by three transects (822 m, 1,265 m and 2,349 m), totaling 4.436 m. Plots were installed in 20 m x 25 m, 50 m equidistant, merged to the right and left of the line transect, totaling 66 sampling units. All tree individuals trees that had a circumference of 1,30 m above the ground (CAP) ≥ 25 cm were identified and measured. There were 3,050 individuals distributed in 133 species, 93 genera and 49 families. It was observed that the species of early succession (pioneer + early secondary) were more numerous, showing characteristics of a forest in early successional stage. doi: 10.4336/2011.pfb.31.67.161 O presente trabalho foi realizado em um trecho de Floresta Ombrofila Densa de Terras Baixas no Municipio de Carauari, Amazonas, tendo como objetivo estimar a composicao floristica do estrato arboreo e classificar as especies nos respectivos grupos ecologicos, a fim de se obter informacoes sobre a atual situacao do fragmento florestal, para embasar estrategias de conservacao e preservacao, bem como embasar a formulacao de pesquisas que visem a disseminacao do conhecimento e sua aplicacao na producao sustentavel. O inventario florestal foi realizado em uma area de 275 ha, cortada por tres transectos (822 m, 1.265 m e 2.349 m), totalizando 4.436 m. Foram instaladas parcelas de 20 m x 25 m, equidistantes a cada 50 m e intercaladas a direita e a esquerda da linha do transecto, totalizando 66 unidades amostrais. Foram identificados e medidos todos os individuos arboreos que apresentaram circunferencia a 1,30 m do solo (CAP) ≥ 25 cm. Registraram-se 3.050 individuos, distribuidos em 133 especies, 93 generos e 49 familias. Quanto a classificacao sucessional, as especies de inicio de sucessao (pioneiras + secundarias iniciais) foram em maior numero, demonstrando caracteristicas de uma floresta em estagio inicial no desenvolvimento sucessional. doi: 10.4336/2011.pfb.31.67.161
Avalia??o do comportamento de espécies de Eucalyptus spp. na Zona da Mata Pernambucana. I: Resultados do primeiro ano - 2001
Coutinho, Jo?o Luis Barboza;Santos, Venézio Felipe dos;Ferreira, Rinaldo Luiz Caraciolo;Nascimento, José Carlos Barboza;
Revista árvore , 2004, DOI: 10.1590/S0100-67622004000600001
Abstract: due to its high rainfall and predominance of hot climate conditions all over the year, the 'dry rainfall' region of the state of pernambuco, located in the northeastern part of brazil, appears to be suitable to the growth and development of many forest tree species such as those of the genus eucalyptus. in this trial, seedlings of 10 eucalyptus species were tried, namely: eucalyptus saligna sm., e. dunnii maiden, e. benthamii maiden & cambage, e. tereticornis sm., e. urophylla s.t. blake, e. pilularis sm., e. camaldulensis dehnh., e. robusta sm., e. grandis w. hill ex maiden and e. citriodora hook. observations and measurements will be carried out during seven years, taking into account mainly: survival (%), plant height and crown width. a complete randomised block experimental design was used with four replicates, with 35 plants per plot. at the first evaluation, held 12 months after planting, the following data were obtained: the majority of eucalyptus species showed a survival rate higher than 95,0%; in relation to forked trees, only e. dunnii, has not presented such characteristic, while e. citriodora. showed the highest rate (35%) and the others, values below 15%; highest plant height and diameter at breast heigth (dbh) were found among seedlings of e. citriodora, e. urophylla, e. camaldulensis, e. saligna e. grandis and e. dunnii.
Efeito de temperaturas e substratos na germina??o de sementes de Myracrodruon urundeuva Fr. All. (Anacardiaceae)
Pacheco, Mauro Vasconcelos;Matos, Valderez Pontes;Ferreira, Rinaldo Luiz Caraciolo;Feliciano, Ana Lícia Patriota;Pinto, Kedma Maria Silva;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000300006
Abstract: myracrodruon urundeuva fr. all. (anacardiaceae) is a native tree specie with excellent physical, chemical and biological properties. however, due to predatory exploration, it is in the official list of brazilian species threatened with extinction. this work aimed at studying the germination of m. urundeuva seeds in different conditions of substrate and temperature regime. the experiment was a completely randomized design in a 8 x 7 factorial arrangement (7 temperatures 25, 27, 30, 35, 20-27, 20-30 and 20-35oc; and 8 substrates - sowing in and on: blotting paper, sand, vermiculite and coconut fiber) with four replications with 25 seeds. the following parameters were analyzed: germination (%), first germination count (%), germination speed index, average time of germination (days), and length (cm) of hipocotyl and primary root. constant temperatures gave the shortest average time of seed germination and favored hipocotyl development. the best results for germination were obtained at 25 and 27oc in all substrates, except for sowing in between blotting paper at 27oc. the vermiculite and coconut fiber substrates allowed satisfactory germinative performance and did not require daily remoisten, proving to be suitable for the evaluation of the physiological quality of m. urundeuva seeds.
Absor??o e distribui??o de nutrientes em plantios comerciais de bambu (Bambusa vulgaris) no nordeste do Brasil
Mendes, Serliete de Carvalho;Molica, Silmar Gonzaga;Ferreira, Rinaldo Luiz Caraciolo;Céspedes, Gérman Hugo Gutierrez;
Revista árvore , 2010, DOI: 10.1590/S0100-67622010000600004
Abstract: in pedras de fogo-pb-brazil, the absorption and the utilization of nutrients of three commercial stands of bambusa vulgaris were compared in sandy soil with differential declivity and plant density, under annual total cut in sandy soil. in cut age, three 15 x 15 m plots were sampled by stand. in each plot, soil analysis in three levels of depths were made and three medium clumps were sampled and weighed old and new culms, twigs, leaves, rhizome and organic blanket. sub samples of each biomass component were weighed, before and after drying, for dry biomass estimation and analysis of n, p, k, ca and mg. the nutrient content and dry biomass / nutrient content ratio in each biomass component were analyzed by complete random design and the median was compared by tukey test, with 5% probability. the declivity raised the absorption efficiency of p, k and ca, and higher clump density raised k absorption efficiency. the efficiency of nutrient utilization in total and commercial biomass was similar in all stands. in leaves, the nutrient content did not vary between stands, but was greatest for n, and the nutrient efficiency utilization varied for p. the nutrient content of felled leaves did not vary by stand, but was greater for k, ca and mg in declivity and the nutrient efficiency of utilization was low for n. the rhizome had higher contents of nutrients and n is the nutrient with lower utilization efficiency. since the nutrient cycling did not compensate exportation, fertilization is necessary, mainly with k, the most exported nutrient.
Utiliza o de técnicas multivariadas na avalia o da divergência genética entre clones de palma forrageira (Opuntia ficus-indica Mill.)
Ferreira Carlos Adonai,Ferreira Rinaldo Luiz Caraciolo,Santos Djalma Cordeiro dos,Santos Mércia Virginia Ferreira dos
Revista Brasileira de Zootecnia , 2003,
Abstract: Avaliou-se, por meio de técnicas multivariadas, a divergência genética entre clones de palma forrageira (Opuntia ficus-indica Mill.), em um experimento instalado na Esta o Experimental da Empresa Pernambucana de Pesquisa Agropecuária - IPA, Caruaru - PE. O delineamento foi em blocos casualizados, com três repeti es. Os tratamentos foram 19 clones de palma do Banco de Germoplasma do IPA. Foram mensuradas: a) medidas em artículos, conforme a ordem: comprimento, largura, espessura, número e peso da matéria verde. b) medidas por planta: presen a de espinho, número de artículos por ordem e total, altura total, infesta o por cochonilha e peso da matéria verde. Realizaram-se análises de variancia univariada (ANOVA) e multivariada (MANOVA), das variáveis can nicas (VC) e de agrupamento (AA). Na ANOVA, foi verificada diferen a entre as médias de clones e por meio da MANOVA, diferen a entre vetores de médias de clones. Com a aplica o da VC, foi possível reduzir a dimensionalidade original para duas dimens es, com explica o de 85,03% da varia o total. Foi considerada, como característica passível de descarte, a porcentagem de infesta o por cochonilha. Na AA discriminaram-se nove grupos. A característica porcentagem de infesta o por cochonilha n o deve ser incluída no estudo da diversidade genética nas condi es estudadas. As características de maior discrimina o foram espessuras dos artículos primário, secundário e terciário, número de artículo primário e pesos médios de matéria verde por artículos secundário e terciário. Em um programa de melhoramento de palma forrageira, devem-se considerar o grupo de clones e o desempenho do clone quanto às características de maior relevancia agron mica e zootécnica.
Relacionamento entre tamanho do nódulo e medi es convencionais da nodula o = Relationship between nodule size and conventional nodulation measurements
José Valdemir Tenório da Costa,Mario de Andrade Lira Junior,Rinaldo Luiz Caraciolo Ferreira,Newton Pereira Stamford
Acta Scientiarum : Agronomy , 2007,
Abstract: Foi testada metodologia que permite o acompanhamento de nódulos individuais de leguminosas ao longo do tempo. Dos sete dias da emergência até a maturidade fisiológica de plantas de caupi, realizaram-se determina es semanais de número, tamanho, matéria seca dos nódulos, área foliar, altura da planta, matéria seca da parte aérea e do sistema radicular e atividade da nitrogenase. Os nódulos foram digitalizados nas resolu es de 100, 200 e 300 pontos porpolegada, e o comprimento e diametro de cada nódulo foram determinados com paquímetro digital e nas imagens digitais. Obtiveram-se imagens do sistema radicular de todas as plantassemanalmente na resolu o de 300 ppp nos lados mais extensos do vaso. As medi es destrutivas e n o destrutivas de tamanho de nódulos geralmente apresentaram-se similares. Medi es n o destrutivas de tamanho de nódulos demonstraram-se como preditoras válidas para medidas como matéria seca de nódulos. A method was tested to allow the study over time of individual legumenodules. From seven days after emergence to full physiological maturity of cowpea plants weekly determinations of nodule number, size and dry matter, leaf area, plant height aerial part and root system dry masses and nitrogenase activity. Nodules were digitized at 100, 200 and 300 dots per inch resolutions, and each nodule length and diameter was measured with a digital pachymeter and on the digital images. Images of the root system of all plants were obtainedweekly at 300 dpi on the larger sides of the pots. Destructive and non-destructive nodule size determinations were generally similar. Non-destructive measures of nodule size were valid predictors for measures such as nodule dry matter.
Usos de especies le osas de la caatinga del municipio de Floresta en Pernambuco, Brasil: conocimiento de los indios de la aldea Travess o do Ouro Uses of the woody species of the caatinga in Floresta, Pernambuco, Brazil: Indigenous knowledge in the Village Travess o do Ouro
José Serafim Feitosa Ferraz,Rinaldo Luiz Caraciolo Ferreira,Mércia Virgínia Ferreira dos Santos,Isabelle Maria Jacqueline Meunier
Bosque (Valdivia) , 2012,
Abstract: Las especies le osas de la caatinga, vegetación del semiárido del nordeste de Brasil, han sido utilizadas sin conocer los impactos ocasionados al medio ambiente. Este estudio tuvo como objetivo conocer los tipos de uso de la vegetación local por peque os productores rurales de una población indígena en el municipio de Floresta, Pernambuco, Brasil. La investigación se realizó mediante observación directa, en visitas guiadas y entrevistas semiestructuradas. La flora le osa local fue reconocida por los entrevistados que atribuyeron usos para 27 especies le osas arbóreas y arbustivas. Los tipos de uso mencionados para la flora fueron organizados en las categorías: alimentación humana, forraje, construcciones residenciales, construcciones rurales, tecnología, combustibles, medicinales y otros usos no madereros. El uso como forraje se relacionó a los mayores números de especies citadas y de citaciones, seguido por construcciones rurales, combustible y construcciones residenciales. Las especies con mayor número de categorías de usos fueron Myracrodruon urundeuva, Anadenanthera columbrina y Cnidoscolus quercifolius. Spondias tuberosa fue la especie más citada como forraje, seguida por C. quercifolius, Commiphora leptophloeos, Schinopsis brasiliensis y M. urundeuva. Se observó que el uso de la vegetación le osa como madera y le a, en general se hace utilizando la madera que se encontró muerta. Desde la perspectiva de los usuarios, la vegetación le osa de la caatinga está destinada principalmente al forraje: de este modo se muestra la importancia de la ganadería extensiva como actividad de subsistencia y su influencia en el conocimiento de los usos de la vegetación. Woody species of caatinga, vegetation of a semiarid region of Northeastern Brazil, have been used without knowing the impacts caused to the environment. This study aimed to identify the uses of local vegetation by small farmers of an indigenous population in the municipality of Floresta, Pernambuco. The research was conducted by direct observation, guided visits and semi structured interviews. The woody flora of the region was properly recognized by the interviewees and uses were attributed for 27 species of this woody-shrub of caatinga. The types of uses mentioned for the flora were organized into categories of uses: human food, fodder, domestic construction, farm buildings, technology, energy (fuels), medicinal and other uses of non-timber products. The fodder was related to greater numbers of species cited and numbers of citations, followed by rural buildings, energy and residential construction. T
Page 1 /21085
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.