Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2020 ( 17 )

2019 ( 116 )

2018 ( 170 )

2017 ( 161 )

Custom range...

Search Results: 1 - 10 of 117082 matches for " José Carlos Batista;Araujo "
All listed articles are free for downloading (OA Articles)
Page 1 /117082
Display every page Item
Cocirculation of two dengue virus serotypes in individual and pooled samples of Aedes aegypti and Aedes albopictus larvae
Pessanha, José Eduardo Marques;Caiaffa, Waleska Teixeira;Cecilio, Alzira Batista;Iani, Felipe Campos de Melo;Araujo, Simone Costa;Nascimento, José Carlos;Kroon, Erna Geessien;Proietti, Fernando Augusto;Arias, Jorge Rodriguez;
Revista da Sociedade Brasileira de Medicina Tropical , 2011, DOI: 10.1590/S0037-86822011000100023
Abstract: introduction: to detect dengue virus, eggs of aedes sp were collected in the city of belo horizonte, brazil, in 2007. methods: egg samples were subsequently hatched and the larvae were tested for the presence of dengue virus rna by rt-pcr. results: among the aedes aegypti larvae samples, 163 (37.4%) out of 435 were positive, including 32 (10.9%) of 293 individual larvae samples concomitantly positive for two serotypes. conclusions: virological surveillance detecting coinfected vectors in the field could represent an important strategy for understanding the numerous factors involved in the transmission and clinical presentation of dengue.
Consumo de matéria seca e desempenho de novilhas das ra?as Girolando e Guzerá sob suplementa??o na caatinga, na época chuvosa, em Pernambuco, Brasil
Santana, Daniel Fernando Ydoyaga;Lira, Mario de Andrade;Santos, Mércia Virginia Ferreira dos;Ferreira, Marcelo de Andrade;Santos, Djalma Cordeiro dos;Mello, Alexandre Carneiro Le?o de;Dubeux Júnior, José Carlos Batista;Araujo, Gherman Garcia Leal de;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001000007
Abstract: to estimate dry matter intake and to evaluate variation on live weight of heifers, an experiment was conducted from march to july 2003, with the following supplementation strategies: no supplementation (control), cottonseed cake (1 kg); spineless cactus (10 kg); spineless cactus + 0.5 kg of cottonseed cake (5 kg). dry matter intake of native pasture was not affected by supplementation, but it affected total dry matter intake. intake of total dry matter (dm) differed among breeds with values of 5.44 and 6.75 kg/day, respectively for guzerat and girolando breeds. for animal fed cottonseed cake supplementation, total dm intake was higher than in the control group (no supplementation), however, it was similar for those under spineless cactus and cottonseed cake + spinelles cactus supplementation. daily average body weight gain (517 and 434 g/animal, respectively, for girolando and guzerat groups) did not differ among breeds neither was affected by breed ? supplementation interaction. however, among strategies of suplementation, values were significantly different and they were 412, 620, 371 and 498 g/animal/day, respectively, for control and cottonseed cake suplementation group; spineless cactus; cottonseed cake + spineless cactus. in pernambuco semiarid, 1 kg of cottonseed cake supplementation improved daily average weight gain, regardless to breed of the animal during the rainy season.
Para que servem os testes de alfabetiza??o?
Oliveira, Jo?o Batista Araujo e;Silva, Luiz Carlos Faria da;
Ensaio: Avalia??o e Políticas Públicas em Educa??o , 2011, DOI: 10.1590/S0104-40362011000500006
Abstract: the paper analysis the literacy tests available in brazil using the empirical evidence about what skills are involved in learning to read. the purpose of the paper is to identify the abilities measured by these tests, the implicit or explicit constructs implied in the indicators and the robustness of the test items in relation to the indicators. the results suggest that the various tests used in brazil ignore the current literature about learning how to read, are not consistent with each other and, as a result, do not evaluate the same indicators. they also neither present construct validity nor sufficient items to measure the central skills associated to learning to read. the tests share and reflect a conceptual confusion between the constructs of reading and understanding.
Controle genético, químico e biológico de meloidoginose na cultura da soja
Araujo, Fabio Fernando de;Bragante, Rodrigo José;Bragante, Carlos Emanuel;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000200013
Abstract: the control of nematodes with the use of different methods is important for success in the reduction of damage caused by these parasites. this study aimed to evaluate the effectiveness of methods for controlling root-knot nematodes in soybean. for that, the soybean brs 282 genotype, resistant to meloidogyne javanica and m. incognita, was used for its genetic control, the nematicide carbofuran was used for its chemical control, and the bacillus subtilis (prbs-1 and b-1) was used for its biological control. soybean brs 282 (resistant) and brs 184 (susceptible) seeds were treated or not with carbofuran and b. subtilis. the soil used in the experiment was collected in areas naturally infested with root-knot nematodes. in order to evaluate the control of root-knot nematodes, the plants were grown in a greenhouse, for 60 days. after this period, the active forms and nematodes eggs in the roots were quantified and plant growth evaluated. the use of the brs 282 genotype was the best option for controlling root-knot nematodes in soybean, due to its low incidence in the roots. for the brs 184 genotype, both the chemical and biological control were effective in reducing the nematode reproduction in soybean roots. the treatment of brs 282 genotype seeds with carbofuran or b. subtilis significantly improved the soybean growth in soil infested with the parasite.
Description of the larva and pupal case of Ommatius orenoquensis Bigot (Diptera, Asilidae, Ommatiinae)
Cezar, Lucas de Araujo;Lamas, Carlos José Einicker;
Revista Brasileira de Entomologia , 2010, DOI: 10.1590/S0085-56262010000100002
Abstract: description of the larva and pupal case of ommatius orenoquensis bigot (diptera, asilidae, ommatiinae). the last instar larva and the pupal case of ommatius orenoquensis bigot, 1896 from a cerrado (brazilian savanna) area in s?o paulo, southeastern brazil, are for the first time described and illustrated.
The effect of the choice of turbulence model on the simulation of fluid flow on a centrifugal separator
Alejandro Colman,José Rincón,Carlos Araujo,Gilberto Materano
Revista Técnica de la Facultad de Ingeniería Universidad del Zulia , 2006,
Abstract: La selección de un modelo de turbulencia adecuado en la simulación de flujo de fluidos, es una interrogante frecuente en el campo del modelado computacional. Esta inquietud llevó a desarrollar este trabajo como parte de un estudio del comportamiento del flujo bifásico agua-aire en un separador centrífugo GLCC (Gas-Liquid Cylindrical Cyclone), utilizando el método del Volumen Finito. El estudio de los modelos de turbulencia se llevó a cabo, por medio de simulaciones hechas con un programa comercial, considerando flujo monofásico (Agua) en un separador centrífugo. Entre los modelos considerados están Kappa-Epsilon Estándar, Grupo Renormalizado Kappa-Epsilon (RNG) y Reynolds Stress con esquemas de interpolación de alto y bajo orden, comparándose los resultados con datos experimentales en términos de la velocidad angular medida a diferentes alturas del separador considerando diferentes caudales. Los resultados obtenidos permiten constatar que los modelos de turbulencia RNG y Reynolds Stress con esquemas de alto orden concuerdan satisfactoriamente con los datos experimentales, por el contrario, los modelos k-e y RNG con bajo orden presentan tendencias similares a las curvas experimentales pero difieren considerablemente en la magnitud de sus valores. The selection of an appropriate turbulence model is a critical step in the set up of a fluid flow simulation, as it is expected that this choice will have a significant impact on the validity of the results. In this work, we study the impact of the choice of a turbulence model, as part of a study of the behavior of air-water two-phase flow in a cylindrical cyclone separator using the finite volume method(FVM).The study was conducted with a commercial CFD code to simulate single-phase flow of water in the cyclone separator, using the standard Kappa-Epsilon (κ-ε), Renormalization-Group Kappa-Epsilon (RNG) and Reynolds Stress (RS) models with both low-order and high-order interpolation. Simulation results were compared with experimental data of angular velocities and flow rates at different heights in the separator. The results show that the RNG and RS models with high order interpolation agree satisfactorily with the experimental data, while κ-ε and low-order RNG model are able to capture the trends of the experimental data but fail to match the observed values.
Asymptomatic Intrahepatic Portosystemic Venous Shunt: Case Report and Review of Literature  [PDF]
Huylmer Lucena Chaves, Mayanna Pinho Batista, Germana Bastos Pontes, Lia Pontes de Melo, José Carlos Godeiro Junior
Open Journal of Radiology (OJRad) , 2019, DOI: 10.4236/ojrad.2019.91001
Abstract: A spontaneous portosystemic shunt is a rare malformation of the liver vessels. The etiology of these shunts is controversial. They can be divided into acquired (most commonly associated with liver cirrhosis) and congenital. Vascular shunts are asymptomatic in the majority of the patients, and when symptomatic were presented by severe complications. The specific way of management can be selected depended on whether the patient was symptomatic or not, and also on the size of the shunt, shunt ratio and whether it was associated with cancer. We will present a clinical case and discuss the importance of the radiological imaging in the screening, diagnosis and follow up of these anomalies.
Synthesis and Characterization of LaNixCo1-xO3 Perovskites via Complex Precursor Methods  [PDF]
Grace Rafaela Oliveira Silva, José Carlos Santos, Danielle M. H. Martinelli, Anne Michelle Garrido Pedrosa, Marcelo José Barros de Souza, Dulce Maria Araujo Melo
Materials Sciences and Applications (MSA) , 2010, DOI: 10.4236/msa.2010.12008
Abstract: This work presents a study on the synthesis of LaNixCo1-xO3 perovskites via complex precursor methods. Perovskite oxides with the composition LaNixCo1-xO3 were synthesized by chelating precursor and polymeric precursor methods using nickel and/or cobalt nitrates, lanthanum nitrate, ethylene glycol, citric acid, and EDTA as starting source. The obtained perovskite were characterized by thermogravimetric analysis, infrared spectroscopy, X-ray diffraction and the morphology of the samples were investigated by N2 adsorption experiments and average medium particle size. TG curves and FTIR spectra were particularly useful in establishing of the optimal calcination temperature of the precursor powders. X-ray diffraction patterns revealed the formation of the perovskite structure in all samples prepared by both synthesis method and after calcinations at 700℃. The results showed that the preparation method resulted in oxides with the intended structure. The specific surface area values were influenced by preparation method.
Determina??o de fatores de empilhamento através de fotografias digitais
Soares, Carlos Pedro Boechat;Ribeiro, José Carlos;Nascimento Filho, Moacir Batista do;Ribeiro, José Carlos Lopes;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000400007
Abstract: the objective of this work was to analyze the accuracy of piling factor estimates using digital photography and software especially developed for this purpose. six trucks carrying five piles each, owned by acesita energética ltd., were used in this research. the analysis revealed that the average difference between the factors determined by the photographic method and the actual factors was approximately 3.2%, with a tendency for over estimation of the values obtained by the photographic method. the "t" test analysis suggested that the differences observed between these factors were mainly due to the the poor piling up of the wood.
Determina o de fatores de empilhamento através de fotografias digitais
Soares Carlos Pedro Boechat,Ribeiro José Carlos,Nascimento Filho Moacir Batista do,Ribeiro José Carlos Lopes
Revista árvore , 2003,
Abstract: O objetivo deste trabalho foi analisar a exatid o de estimativas de fatores de empilhamento obtidas através de fotografias digitais e de software especialmente desenvolvido para esta finalidade, em pilhas sobre caminh es. Para isto, foram utilizados seis caminh es com cinco pilhas cada um, pertencentes à ACESITA ENERGéTICA Ltda. Após as análises, verificou-se que a diferen a média entre os fatores obtidos pelo método fotográfico e os fatores reais foi da ordem de 3,2%, com tendência de superestima o dos fatores obtidos pelo método fotográfico. Pelo teste "t", verificou-se, também, que os fatores obtidos pelo método fotográfico diferiram dos fatores reais, principalmente devido ao mau empilhamento da madeira.
Page 1 /117082
Display every page Item

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