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Search Results: 1 - 10 of 248153 matches for " Sebasti?o;Félix Pinto "
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Ciclagem de nutrientes em dois trechos de floresta estacional semidecidual na reserva florestal mata do paraíso em Vi?osa, MG, Brasil
Pinto, Sheila Isabel do Carmo;Martins, Sebastio Venancio;Barros, Nairam Félix de;Dias, Herly Carlos Teixeira;
Revista árvore , 2009, DOI: 10.1590/S0100-67622009000400008
Abstract: a semideciduous seasonal forest in different successional stages (initial forest and mature forest), in vi?osa, minas gerais state, in the southeast region of brazil, was studied aiming at quantifying litter annual production, decomposition, n, p, k, ca, and mg contents and use efficiency. the annual litter production was 6,310 kg.ha-1 for the initial forest and 8,819 kg.ha-1 for the mature forest. nutrient annual deposition in the litter was estimated at 137 and 180 kg.ha-1 n, 5 and 8 kg.ha-1 p, 17 and 45 kg.ha-1 k, 89 and 179 kg.ha-1 ca, 21 and 26 kg.ha-1 mg for the initial forest and mature forest, respectively. the average forest floor biomass was 4,647 kg.ha-1 for the initial forest and 7,006 kg.ha-1 for the mature forest. the instantaneous decomposition rate (k) was estimated at 1,36 for the initial forest and 1,26 for the mature forest, with a turn over time of 270 and 288 days, respectively. the smallest litter production in the initial forest reflects the less developed structure in the site of forest in initial successional stage, with litter production of lower quality compared to the mature forest, but with faster renovation and efficient use of the nutrients.
Produ??o de serapilheira em dois estádios sucessionais de floresta estacional semidecidual na Reserva Mata do Paraíso, em Vi?osa, MG
Pinto, Sheila Isabel do Carmo;Martins, Sebastio Venancio;Barros, Nairam Félix de;Dias, Herly Carlos Teixeira;
Revista árvore , 2008, DOI: 10.1590/S0100-67622008000300015
Abstract: litter production in two sites of forest (initial forest and mature forest) was evaluated during twelve months, between november/2003 and october/2004, for the estimation of annual litter production, evaluating the time variation of litter deposition and investigating the existence of correlations between vegetation structure and litter production. the study was carried out in the mata do paraíso forest reserve, nearby vi?osa, mg. twenty 1 m2 litter traps were placed 20 cm above the soil surface. the litter traps were distributed in the center of the 10 x 30 m plots, ten litter traps in each forest site. sampling was carried out on monthly basis. the material deposited in the traps was separated into leaves, branches, flowers and seeds. the annual litter production was estimated at 6,310 kg.ha-1 for the young forest and 8,819 kg.ha-1 for the mature forest. leaves were the predominant fraction (64.6% and 55.9%), followed by branches (31.2% and 36.4%), fruits and seeds (3.2% and 6.2%) and flowers (1.0% and 1.5%) for the young forest and mature forest, respectively. litter production was uniform throughout the period analyzed showing a seasonal pattern with the largest values in the spring. maximum production for the leaf fraction was found in september, at the end of the dry season. litter production was more correlated with density of individuals in the plots and biomass than with pioneer species dominance.
Consenso brasileiro de monitoriza??o e suporte hemodinamico - parte III: métodos alternativos de monitoriza??o do débito cardíaco e da volemia
Schettino, Guilherme;Ederlon, Rezende;Mendes, Ciro Leite;Réa-Neto, álvaro;David, Cid Marcos;Lobo, Suzana Margareth Ajeje;Barros, Alberto;Silva, Eliézer;Friedman, Gilberto;Amaral, José Luiz Gomes do;Park, Marcelo;Monachini, Maristela;Oliveira, Mirella Cristine de;Assun??o, Murillo Santucci César;Akamine, Nelson;Mello, Patrícia Veiga C;Pereira, Renata Andréa Pietro;Costa Filho, Rubens;Araújo, Sebastio;Pinto, Sérgio Félix;Ferreira, Sérgio;Mitushima, Simone Mattoso;Agareno, Sydney;Brilhante, Yuzeth Nóbrega de Assis;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000100013
Abstract: background and objectives: cardiac output and preload as absolute data do not offer helpful information about the hemodynamic of critically ill patients. however, monitoring the response of these variables to volume challenge or inotropic drugs is a very useful tool in the critical care setting, particularly for patients with signs of tissue hypoperfusion. although pac remains the " gold standard" to measure cardiac output and preload, new and alternative technologies were developed to evaluate these hemodynamic variables. methods: modified delphi methodology was used to create and quantify the consensus between the participants. amib indicated a coordinator who invited more six experts in the area of monitoring and hemodynamic support to constitute the consensus advisory board. twenty three physician and two nurses selected from different regions of the country completed the expert panel, which reviewed the pertinent bibliography listed at the medline in the period from 1996 to 2004. results: recommendations regarding the use of arterial pulse pressure variation during mechanical ventilation, continuous arterial pulse contour and lithium dilution cardiac output measurements, esophageal doppler waveform, thoracic electrical bioimpedance, echocardiography and partial co2 rebreathing for monitoring cardiac output and preload were created. conclusions: the new and less invasive techniques for the measurement of cardiac output, preload or fluid responsiveness are accurate and may be an alternative to pac in critically ill patients.
Parte II: monitoriza??o hemodinamica básica e cateter de artéria pulmonar
Dias, Fernando Suparregui;Rezende, Ederlon;Mendes, Ciro Leite;Réa-Neto, álvaro;David, Cid Marcos;Schettino, Guilherme;Lobo, Suzana Margareth Ajeje;Barros, Alberto;Silva, Eliézer;Friedman, Gilberto;Amaral, José Luiz Gomes do;Park, Marcelo;Monachini, Maristela;Oliveira, Mirella Cristine de;Assun??o, Murillo Santucci César;Akamine, Nelson;Mello, Patrícia Veiga C;Pereira, Renata Andréa Pietro;Costa Filho, Rubens;Araújo, Sebastio;Félix Pinto, Sérgio;Ferreira, Sérgio;Mitushima, Simone Mattoso;Agareno, Sydney;Brilhante, Yuzeth Nóbrega de Assis;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000100012
Abstract: background and objectives: monitoring of vital functions is one of the most important tools in the management of critically ill patients. nowadays is possible to detect and analyze a great deal of physiologic data using a lot of invasive and non-invasive methods. the intensivist must be able to select and carry out the most appropriate monitoring technique according to the patient requirements and taking into account the benefit/risk ratio. despite the fast development of non invasive monitoring techniques, invasive hemodynamic monitoring using pulmonary artery catheter still is one of the basic procedures in critical care. the aim was to define recommendations about clinical utility of basic hemodynamic monitoring methods and the use of pulmonary artery catheter. methods: modified delphi methodology was used to create and quantify the consensus between the participants. amib indicated a coordinator who invited more six experts in the area of monitoring and hemodynamic support to constitute the consensus advisory board. twenty-five physicians and nurses selected from different regions of the country completed the expert panel, which reviewed the pertinent bibliography listed at the medline in the period from 1996 to 2004. results: recommendations were made based on 55 questions about the use of central venous pressure, invasive arterial pressure, pulmonary artery catheter and its indications in different settings. conclusions: evaluation of central venous pressure and invasive arterial pressure, besides variables obtained by the pac allow the understanding of cardiovascular physiology that is of great value to the care of critically ill patients. however, the correct use of these tools is fundamental to achieve the benefits due to its use.
Rentabilidade da produ??o organica de cultivares de alface com diferentes preparos do solo e ambiente de cultivo
Araújo Neto, Sebastio Elviro de;Ferreira, Regina Lúcia Félix;Pontes, Frederico Silva Thé;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009005000071
Abstract: it was evaluated the economical profitability of three lettuce cultivars cultivated in greenhouse and field with different tillage soil, in rio branco, acre, brazil. the experiments were installed in january, june and november 2006. the experimental design was randomized blocks in split-plot arrangement in strips, with four replications. the strips corresponded to cultivation in greenhouse and field. in each strip, three lettuce cultivars (simpson, marisa and vera), constituted the split-plot and were raffled in the plot represented by four tillage soil (conventional tillage with mulching peel rice, silvered polyethylene ,non- mulched soil and non-tillage soil). the mean total cost (mtc) in greenhouse was of r$0.50 bundle-1, 26% smaller than in field. the liquid revenue of r$24,270.67ha-1 cycle-1, was obtained in greenhouse and r$14,124.92ha-1 cyicle-1 in field. the non-tillage soil promoted smallest mtc and largest liquid revenue in greenhouse (r$30,724.64ha-1 cycle-1) and in field (r$22,892.71ha-1 ciclo-1) and the largest rentability index. therefore, the organic no-tillage of lettuce in acre in greenhouse preference and in field it provides better economical rentability than the other types of tillage and mulching of the soil.
Plantio direto de cebolinha sobre cobertura vegetal com efeito residual da aplica??o de composto organico
Araújo Neto, Sebastio Elviro de;Galv?o, Robson de Oliveira;Ferreira, Regina Lúcia Félix;Parmejiani, Renan Suaiden;Negreiros, Jacson Rondinelle da Silva;
Ciência Rural , 2010, DOI: 10.1590/S0103-84782010000500033
Abstract: the objective of this research was to analyze the effect of the no-tillage organic green onion under living and dead soil cover, with residual application of composted mulch. the experimental design was used in randomized blocks with four replicates, in split-plot arrangement with four replications. the plot corresponded to the planting system (no-tillage with living mulch of arachis pintoi, living mulch of native weed, straw mulch and conventional tillage). in each plot the split-plot were represented by the residual doses of organic compost 35, 70 e 105t ha-1 year-1 in the dry compost. the no-tillage in the straw provided superior results to the conventional tillage of the soil and to the two no-tillage systems under living mulch of a. pintoi and native weed. the residual effect of the organic manuring grew with the increase of the fertilizer dose in the no tillage straw, which didn't happen in the no-tillage with living mulch.
Cultivo organico de coentro em plantio direto utilizando cobertura viva e morta adubado com composto
Tavella, Leonardo Barreto;Galv?o, Robson de Oliveira;Ferreira, Regina Lúcia Félix;Araújo Neto, Sebastio Elviro de;Negreiros, Jacson Rondinelle da Silva;
Revista Ciência Agron?mica , 2010, DOI: 10.1590/S1806-66902010000400014
Abstract: the objective of this work was to evaluate the agronomic behavior of the cilantro in organic no-tillage system under alive and dead mulching and fertilized with doses of compost. the experimental design was randomized blocks, in a split-plot arrangement with four replications. the plot corresponded to the planting system (no-tillage with live mulching of arachis pintoi, with live mulching of native weed, with mulching of straw and conventional tillage). in each plot the split-plot were represented by the doses of organic compost 10; 20 e 30 t ha-1 of dry compost. the no-tillage system with straw and conventional tillage showed the best results in all variables in the plant compared with no-tillage systems with live mulching of peanut crop and native weed. cilantro answered linearly to fertilization, with yields of 4,554 t ha-1 to 6,542 t ha-1 when fertilized with 10 to 30 t ha-1, respectively.
Influence of environmental variables on the shrub and tree species distribution in two Semideciduous Forest sites in Vi?osa, Minas Gerais, Brazil
do C. Pinto,Sheila Isabel; V. Martins,Sebastio; de Barros,Nairam F; T. Dias,Herly Carlos; Kunz,Sustanis H;
Revista de Biología Tropical , 2008,
Abstract: the floristic variations of shrub and tree components were studied in two sites of semideciduous forest, initial forest and mature forest, located in the mata do paraíso forest reserve, in vi?osa, state of minas gerais, southeastern brazil, in order to analyze the floristic similarity and the correlations between environmental variables and the distribution of tree species in these forests. individual trees with a diameter at breast height (dbh) ≥ 4.8 cm were sampled in twenty 10 x 30 m plots (10 plots in each site). the plots were distributed systematically at 10 m intervals. the environmental variables analyzed were: the canopy openness and soil chemical and texture characteristics. the two forest sites showed clear differences in the levels of canopy openness and soil fertility, factors that reflect the floristic and successional differences of the shrub and tree component, revealed by the low similarity between these forests by cluster analysis. the canonical correspondence analysis (cca) of environmental variables and species abundance indicated that the species in these forests studied are distributed under strong influence of canopy openness, moisture and soil fertility. rev. biol. trop. 56 (3): 15571569. epub 2008 september 30.
Influence of environmental variables on the shrub and tree species distribution in two Semideciduous Forest sites in Vi osa, Minas Gerais, Brazil
Sheila Isabel do C. Pinto,Sebastio V. Martins,Nairam F de Barros,Herly Carlos T. Dias
Revista de Biología Tropical , 2008,
Abstract: The floristic variations of shrub and tree components were studied in two sites of Semideciduous Forest, initial forest and mature forest, located in the Mata do Paraíso Forest Reserve, in Vi osa, State of Minas Gerais, Southeastern Brazil, in order to analyze the floristic similarity and the correlations between environmental variables and the distribution of tree species in these forests. Individual trees with a diameter at breast height (DBH) ≥ 4.8 cm were sampled in twenty 10 x 30 m plots (10 plots in each site). The plots were distributed systematically at 10 m intervals. The environmental variables analyzed were: the canopy openness and soil chemical and texture characteristics. The two forest sites showed clear differences in the levels of canopy openness and soil fertility, factors that reflect the floristic and successional differences of the shrub and tree component, revealed by the low similarity between these forests by cluster analysis. The canonical correspondence analysis (CCA) of environmental variables and species abundance indicated that the species in these forests studied are distributed under strong influence of canopy openness, moisture and soil fertility. Rev. Biol. Trop. 56 (3): 15571569. Epub 2008 September 30. Estudiamos las variaciones florísticas de arbustos y árboles en dos sitios de un bosque semicaducifolio, bosque primario y bosque maduro, en la Reserva Forestal Mata do Paraíso, en Vi osa, Estado de Minas Gerais, Sudeste de Brasil, para analizar la similitud florística y las correlaciones entre las variables ambientales y la distribución de tres especies en estos bosques. árboles individuales con diámetro a la altura del pecho (DAP) ≥ 4.8 cm. fueron muestreados en veinte parcelas de 10 x 30 m (10 parcelas en cada sitio). Las parcelas se distribuyeron sistemáticamente a intervalos de 10 m. Las variables ambientales fueron analizadas así: la abertura del dosel y características químicas y de textura del suelo. Los dos sitios de bosque mostraron diferencias evidentes en la abertura del dosel y fertilidad del suelo, factores que reflejan las diferencias florísticas y sucesionales de arbustos y árboles, revelado por la baja similitud entre estos bosques por medio de análisis de conglomerados. El análisis de correspondencia canónica (CCA) de variables ambientales y abundancia de especies indican que las especies en los bosques estudiados están distribuidas bajo una fuerte influencia de la abertura del dosel, humedad y fertilidad del suelo
Produtividade e qualidade de genótipos de mel?o-amarelo em quatro ambientes
Araújo Neto, Sebastio Elviro de;Gurgel, Fábio de Lima;Pedrosa, Josué Fernandes;Ferreira, Regina Lúcia Félix;Araújo, Ant?nio de Pádua;
Revista Brasileira de Fruticultura , 2003, DOI: 10.1590/S0100-29452003000100030
Abstract: with the objective of identify genotypes of yellow melon export type and with high yield, were evaluated nine genotypes in four environments in potiguar west. the experiments were established in the mossoró-assu agricultural pole, rio grande do norte state - brazil. the experimental design was in randomized blocks with four replications and 16 plants for plot. the genotypes evaluated were: rochedo, tsx-32096; px 4910606, gold mine, px-1010606; yellow queen; gold pride; yellow king; af-646 and af-682. the genotypes that presented higher total productivity were tsx-32096, gold mine, px-4010606, yellow queen and gold pride, with average of 55.1 t/ha, and with higher marketable productivity were tsx-32096, rochedo, gold mine, px-4010606 and gold pride in mossoró (40.1 t/ha) and carnaubais (46.2 t/ha), and the genotypes af-646, yellow queen and af-682 in baraúna (63.1 t/ha), this environment provided the largest marketable productivity, overcoming in 53%, 75% and 166% the environments of carnaubais, mossoró and alto do rodrigues. the fruit mean weight was influenced by the cultivation environment, ranging from 1.07 kg in mossoró to 1.64 kg in baraúna. the higher concentration of soluble solids was verified in the genotypes af-646 (11.1%), px-4910606 (11.0%), yellow king (10.7%) and tsx-32096 (11.3%).
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