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Search Results: 1 - 10 of 183562 matches for " Juarez Ventura de Oliveira "
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Comparative Skill of Numerical Weather Forecasts in Eastern Amazonia  [PDF]
Bergson Cavalcanti de Moraes, Douglas Batista da Silva Ferreira, Luiz Gylvan Meira Filho, Juarez Ventura de Oliveira, Everaldo Barreiros de Souza, Pedro Pereira Ferreira Júnior, Renata Kelen Cardoso Camara, Edson José P. da Rocha, Jo?o Batista M. Ribeiro
Atmospheric and Climate Sciences (ACS) , 2013, DOI: 10.4236/acs.2013.33037
Abstract:

The present study evaluates the performance of three numerical weather forecasting models: Global Forecast System (GFS), Brazilian Regional Atmospheric Modelling System (BRAMS) and ETA Regional Model (ETA), by means of the Mean Error (ME) and the Root Mean Square Error (RMSE), during the most rainy four months period (January to April 2012) on Eastern Amazonia. The models displayed errors of superestimation and underestimation with respect to the observed precipitation, mainly over center-north of Pará and all of Amapá, where the precipitation is higher. Among the analyzed models, GFS shows the best performance, except during January and March, when the model to underestimated precipitation, possibly due to the anomalously high values recorded.

Níveis dietéticos de lisina para suínos da ra?a Landrace dos 15 aos 30 kg
Moretto, Valéria;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Fontes, Dalton de Oliveira;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000300023
Abstract: two experiments were carried out to determine the total lysine requirement of purebred landrace swine, males and females, from 15 to 30 kg live weights. fifty females and fifty males were used in a randomized complete block design, with five treatments, five replications and two animals per experimental unit, in the experiments i and ii, respectively. the treatments consisted of a basal diet, supplemented with five levels of l-lysine.hcl, resulting in diets with .85, .95, 1.05, 1.15, 1.25% of total lysine in both experiments. in experiment i, the dietary lysine levels did not influence the average daily feed intake. the average daily gain, daily lysine intake and protein deposition rates in the carcass linearly increased with the lysine level. the treatments quadractily influenced the feed:gain ratio, which improved up to 1.08% lysine level. in the experiment ii, lysine level did not influence the average daily feed intake and the feed:gain ratio. there was a quadratic effect of dietary lysine level on average daily gain, average daily lysine intake and protein deposition rate in the carcass. the best results of average weight gain were obtained with the level of 1.08% lysine. the total lysine requirement, for the starting growing phase (15 to 30 kg), was estimated to be 1.08%, for both sexes.
Níveis de lisina para leitoas selecionadas geneticamente para deposi o de carne magra, dos 60 aos 95 kg
Fontes Dalton de Oliveira,Donzele Juarez Lopes,Ferreira Aloisio Soares,Oliveira Rita Flávia Miranda de
Revista Brasileira de Zootecnia , 2000,
Abstract: Foram utilizadas 50 leitoas mesti as (Hampshire, Landrace Belga, Pietran) com peso inicial médio de 60,23±0,49 kg e alto potencial genético para deposi o de carne magra na carca a, para avaliar diferentes níveis de lisina. Foi usado delineamento de blocos ao acaso com cinco tratamentos, cinco repeti es e dois animais por unidade experimental. Os tratamentos corresponderam a uma ra o basal com 15,8% de proteína bruta, suplementada com cinco níveis de L-lisina HCl, resultando em ra es com 0,75; 0,85; 0,95; 1,05; e 1,15% de lisina. N o se observou efeito dos tratamentos sobre consumo de ra o e ganho de peso diário, entretanto, o consumo de lisina diário elevou-se de forma linear com o aumento do nível de lisina da ra o. Houve efeito quadrático dos níveis de lisina sobre a convers o alimentar e o teor de uréia no soro sangüíneo, que reduziram até o nível de 1,00% de lisina ou 0,302% /Mcal de ED, o que correspondeu a um consumo estimado de lisina de 23,90 g/dia. N o se observou efeito dos tratamentos sobre a porcentagem de água e proteína e taxa de deposi o de proteína na carca a, entretanto, a porcentagem e a taxa de deposi o de gordura diminuíram de maneira linear. Concluiu-se que leitoas com alto potencial genético para deposi o de carne magra, dos 60 aos 95 kg de peso vivo, requerem 1,00% de lisina (0,302%/Mcal de ED) e 0,90% (0,272%/Mcal de ED) de lisina digestível verdadeira, para máximo desempenho, o que corresponde a consumo diário de lisina total e digestível de 23,9 e 21,5 g, respectivamente.
Níveis dietéticos de lisina para suínos da ra a Landrace dos 15 aos 30 kg
Moretto Valéria,Donzele Juarez Lopes,Oliveira Rita Flávia Miranda de,Fontes Dalton de Oliveira
Revista Brasileira de Zootecnia , 2000,
Abstract: Com o objetivo de determinar a exigência nutricional de lisina total para suínos da ra a Landrace, machos inteiros e fêmeas, de 15 a 30 kg de peso, foram conduzidos dois experimentos. Utilizaram-se 50 fêmeas no experimento I e 50 machos inteiros no experimento II, em delineamento em blocos casualizados, com cinco tratamentos, cinco repeti es e dois animais por unidade experimental, em cada experimento. Os tratamentos consistiram de uma ra o basal suplementada com cinco níveis de L-lisina.HCl, resultando em ra es com 0,85; 0,95; 1,05; 1,15; e 1,25% de lisina, em ambos os experimentos. No experimento I, o consumo de ra o médio diário n o foi influenciado pelo nível de lisina das ra es. Ganho de peso médio diário, consumo de lisina médio diário e taxa de deposi o de proteína na carca a aumentaram de forma linear com o nível de lisina da ra o. Os tratamentos influenciaram de forma quadrática a convers o alimentar, que melhorou até o nível de 1,08% de lisina. No experimento II, os tratamentos n o influenciaram o consumo de ra o médio diário e a convers o alimentar. Constatou-se efeito quadrático dos níveis de lisina sobre ganho de peso médio diário, consumo de lisina médio diário e taxa de deposi o de proteína na carca a. Os melhores resultados de ganho de peso foram observados no nível de 1,08% de lisina. A exigência de lisina total na ra o, para a fase inicial de desenvolvimento (15 a 30 kg), foi de 1,08%, para ambos os sexos.
Digestible lysine requirement of gilts with high genetic potential lean deposition, in carcass from 15 to 30 kg Exigência de lisina digestível de fêmeas suínas selecionadas para deposi o de carne magra, na carca a dos 15 aos 30 kg
Mariana Cruz Rossoni,Juarez Lopes Donzele,Francisco Carlos Oliveira Silva,Rita Flávia Miranda de Oliveira
Revista Brasileira de Saúde e Produ??o Animal , 2009,
Abstract: Fifty gilts were used, with initial weight of 15.11 + 1.34 kg, distributed in a random block experimental design, with five treatments (digestible lysine levels), five replicates and two animals per stall, which were considered one experimental unit. The criteria for the formation of the blocks were the animal initial weight. Treatments consisted in a basal diet with 19.41% of CP e 3,221 kcal of ME/kg, supplemented with L-lysine HCl, resulting on diets with 0.88, 0.98, 1.08, 1.18 and 1.28% of digestible lysine. Diets were supplemented with increasing levels of industrial aminoacids, resulting on diets with constant ratio of essential aminoacids and lysine, based on true digestible. There was no effect of levels of digestible lysine on daily feed intake and daily weight gain. A quadratic effect (P < 0.06) was observed on feed conversion that improved until an estimated level of 1.08% of digestible lysine, which corresponded to a digestible lysine intake of 11.60 g/day. The level of 1,08% of digestible lysine, which corresponded to a digestible lysine intake of 11.60 g/day, provided the best performance results for gilts and a high genetic potential for lean deposition from 15 to 30kg. Foram utilizadas 50 fêmeas suínas, com peso inicial de 15,11 + 1,34 kg, distribuídas em delineamento experimental de blocos ao acaso, com cinco tratamentos (níveis de lisina digestível), cinco repeti es e dois animais por baia, o que constituiu a unidade experimental. Como critério para forma o dos blocos, foi utilizado o peso dos animais. Os tratamentos corresponderam a uma ra o basal com 19,41% de PB e 3.221 kcal de EM/kg, suplementada com L-lisina HCl, resultando em ra es com 0,88, 0,98, 1,08, 1,18 e 1,28% de lisina digestível. As ra es foram suplementadas com níveis crescentes de aminoácidos industriais, resultando em ra es com rela es constantes entre os aminoácidos essenciais e a lisina, com base na digestibilidade verdadeira. N o foi observado efeito dos níveis de lisina digestível sobre o consumo de ra o e ganho de peso diário. Observou-se efeito quadrático (P<0,06) dos tratamentos sobre a convers o alimentar, que melhorou até o nível estimado de 1,08% de lisina digestível, correspondendo a um consumo de lisina digestível de 11,60 g/dia. O nível de 1,08% de lisina digestível, correspondente a um consumo de 11,60 g/dia de lisina digestível, proporcionou os melhores resultados de desempenho para fêmeas suínas de alto potencial genético, para deposi o de carne magra na carca a dos 15 aos 30 kg.
Genetic parameters of wheat populations in environments with contrasting temperatures
Oliveira, Davi Melo de;Souza, Moacil Alves de;Machado, Juarez Campolina;Cargnin, Adeliano;
Crop Breeding and Applied Biotechnology , 2012, DOI: 10.1590/S1984-70332012000100011
Abstract: the objective of this study was to estimate genetic parameters of wheat segregating populations grown in environments with different thermal conditions. thus, two experiments were carried out at universidade federal de vi?osa, brazil. a 16 by16 square lattice design was used with two replications, where 240 families from eight segregating populations, 30 families from each population, plus 16 parents were evaluated. in the first experiment, sown in february 2007 (summer), s0:2 families were evaluated. in the second one, in june 2007 (winter), s0:3 families were evaluated. grain yield and thousand grains weight were recorded. so, the most promising population to be grown under different levels of temperature is the population ii originated from br24/alian?a//ep93541/cpac9662. it was verified that the thermal conditions might interfere in the wheat genotypes performance and also in the genetic parameters estimates.
Contamina??o de aqüífero por hidrocarbonetos: estudo de caso na Vila Tupi, Porto Velho - Rond?nia
Forte, Elcimar Juarez;Azevedo, Mariangela Soares;Oliveira, Ronaldo Cavalcante de;Almeida, Ronaldo de;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000700008
Abstract: underground storage tanks (ust) are widely used in the porto velho area. a large number of these usts are in bad condition due to corrosion processes causing groundwater contamination. a large number of these leaking underground fuel tanks (luft) are in urban areas but due to the lack of water quality monitoring, they are only detected when there is a high contamination level. this study identified petroleum hydrocarbons, derived from a luft, by a silica gel/petroleum ether partitioning gravimetric method and by gas chromatographic analysis of samples collected in wells dug in a gas station and in houses in the aforementioned neighborhood.
YIELD AND CHARCOAL CHARACTERIZATION OF THREE BRAZILIAN SEMI-ARID REGION SPECIES
Juarez Benigno Paes,Carlos Roberto de Lima,Elisabeth de Oliveira,Heric Cavalcanti Mascarenhas dos Santos
Revista Ciência da Madeira , 2012,
Abstract: The research aimed to determine the yield of carbonizations and to characterize the charcoal produced of Mimosa tenuiflora (Willd.) Poir., Mimosa arenosa (Willd.) Poir. and Anadenanthera colubrina (Vell.) Brenan. var. cebil (Gris.) Alts, species of large occurrence in Brazilian semi-arid region and employed for energy (firewood and charcoal). Five trees of each species (Mimosa arenosa six trees) were cut and determined the yield of carbonizations and characterization of charcoal produced by studied species. The carbonizations and physical and chemical analyses of charcoal were performed in the Laboratory of Forest Products Technology (LTPF) of the Federal University of Campina Grande (UFCG), Para -ba, Brazil. In this work were determined the fixed carbon yield, real and apparent densities, porosity, calorific superior power, volatile material content, ash content, fixed carbon content and yield fixed carbon of the produced charcoals. The species showed charcoal yield and physical characteristics of charcoal similar. The charcoal produced with Mimosa tenuiflora presented minors volatile and ash contents, and greater fixed carbon content and fixed carbon yield, having presented best steel properties, for the purpose.
NOTE - Genetic parameters of wheat populations in environments with contrasting temperatures
Davi Melo de Oliveira,Moacil Alves de Souza,Juarez Campolina Machado,Adeliano Cargnin
Crop Breeding and Applied Biotechnology , 2012,
Abstract: The objective of this study was to estimate genetic parameters of wheat segregating populations grown in environments with different thermal conditions. Thus, two experiments were carried out at Universidade Federal de Vi osa, Brazil. A 16 by16 square lattice design was used with two replications, where 240 families from eight segregating populations, 30 families from each population, plus 16 parents were evaluated. In the first experiment, sown in February 2007 (summer), S0:2 families were evaluated. In the second one, in June 2007 (winter), S0:3 families were evaluated. Grain yield and thousand grains weight were recorded. So, the most promising population to be grown under different levels of temperature is the Population II originated from BR24/Alian a//EP93541/CPAC9662. It was verified that the thermal conditions might interfere in the wheat genotypes performance and also in the genetic parameters estimates.
Recurrent selection as breeding strategy for heat tolerance in wheat
Juarez Campolina Machado,Moacil Alves de Souza,Davi Melo de Oliveira,Adeliano Cargnin
Crop Breeding and Applied Biotechnology , 2010,
Abstract: The development of heat-tolerant varieties is an important goal of wheat breeding programs, requiringefficient selection methods. In the present study the use of recurrent selection was evaluated as a strategy to improve heatstress tolerance in wheat. Two cycles of recurrent selection were performed in experiments conducted in research areas of theUniversidade Federal de Vi osa, located in Coimbra-MG and Vi osa-MG, in 2004 and 2007, in two growing seasons (summerand winter). The genetic gain and the existence of variability show the possibility of successful recurrent selection for heattolerancein wheat.
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