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Search Results: 1 - 10 of 185549 matches for " Felipe Barbosa Venancio de Freitas "
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Magnetometric Characterization of the Rio do Peixe Basin, Brazil  [PDF]
Kaio da Silva Pimentel Figueiredo, Gabriel Machado Stutz Xavier, Dayane de Souza Pereira, Jennifer Santos Rosa, Tainá de Mello Ribeiro, Hans Schmidt Santos, Felipe Barbosa Venancio de Freitas, Rogério Manhaes Soares, Rayssa Barcellos Paiva
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105362
Abstract:
This work presents the analysis of magnetometric data of an aerial survey conducted in the Rio do Peixe Sedimentary Basin, which is a promising oil producing region in the state of Paraíba, Brazil. The collected aeromagne-tometric data allowed the preparation of maps regarding magnetic anomaly, horizontal and vertical derivatives, analytical signal and Euler Decon-volution that were compared with the geology, topography, and regional seismic. Thus, we identified the main lineaments of the basin that were Tatajuba, Portalegre, and Malta faults. Furthermore, we also found a maxi-mum basin depth of almost 1400 m, which is compatible with the available seismic survey.
AVO Didactic Analysis from Simplified Modeling of Seismic Data in Libra Oil Field of the Pre-Salt Region, Brazil  [PDF]
Kaio da Silva Pimentel Figueiredo, Kaendra Williams Temoteo, Rafael Ximenes Goncalves, Yasmim Monteiro Cordeiro, Rogério Manhaes Soares, Hans Schmidt Santos, Claudiomar Rodrigues Franco, Felipe Barbosa Venancio de Freitas, Christyne Barros de
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105788
Abstract:
In this study, a certain zone of Libra oil field of the pre-salt region was se-lected to be analyzed for didactic purposes in order to simulate AVO re-sponses. The region was modeled using seismic data, setting up a typical oil system with source rock (shale), reservoir rock (sandstone), and seal rock (salt). Thus, a set of parameters such as seismic wave velocity, density and Poisson’s ratio for the studied zone was proposed. The AVO analysis allowed the classification of reflectors and the distinction of the geology for sandstones saturated with both water and gas.
Modelagem da forma o e propaga o de trincas em misturas asfálticas
Jorge Barbosa Soares,Felipe Araújo Colares de Freitas
Transportes , 2009,
Abstract: O trincamento da camada asfáltica em pavimentos é apontado como o principal defeito das rodovias brasileiras. Estudos experimentais e numéricos sobre este fen meno vêm sendo realizados considerando o material como homogêneo. Este artigo apresenta uma abordagem numérica baseada na Teoria da Mecanica da Fratura na qual considera-se a heterogeneidade do material, sendo o ligante e os agregados tratados separadamente. As simula es realizadas s o verificadas e calibradas através de ensaios laboratoriais simples e convencionais. O estudo trata da forma o e propaga o de trincas sob carregamentos monot nicos e aponta para uma nova forma de simula o do fen meno de fadiga de misturas. é ainda discutida a utiliza o de uma abordagem multi-escala, na qual o dano observado na forma da propaga o de trincas na escala local pode ser considerado numa escala global compatível com o pavimento real.
Avalia o das habilidades comunicativas de crian as surdas: a influência do uso da língua de sinais e do português pelo examinador bilíngüe
Felipe Venancio Barbosa
Revista da Sociedade Brasileira de Fonoaudiologia , 2007, DOI: 10.1590/s1516-80342007000400017
Abstract:
EXPERIMENTAL INFECTION BY Trypanosoma vivax IN GOATS INFEC O EXPERIMENTAL EM CAPRINOS COM Trypanosoma vivax
Jael Soares Batista,Andréia Freitas de Oliveira,Elba Fonseca Barbosa,Felipe Farias Pereira da Camara Barros
Ciência Animal Brasileira , 2008,
Abstract: Four goats were infected intravenously with 1.0 mL of cattle blood containing about 1.25 x 105 Trypanosoma vivax derived from spontaneous outbreak in cattle at Catolé do Rocha city, Paraíba, Brazil. Other four goats were used as controls. Parasitemia and body temperature were determined daily for 40 days. Animals were weighted each 7 days, and blood samples for blood cells counts were collected each 5 days. It was obtained a sample of liquor from each animal before death; cerebrospinal fluid samples were submitted to biochemical and cytological evaluations, density determination and parasite detection. A positive correlation was found between body temperature and parasitemia in infected animals. These animals presented anemia, leukopenia, hypoglycemia, decreased serum levels of total proteins and cholesterol, and nervous symptoms. Examination of cerebrospinal fluid resulted in decrease of glucose levels and increase in lactate dehydrogenase, cell counts and presence of the parasite. At necropsy it was found pale carcass, generalized infartation of lymphonodes, pulmonary edema, and liquid accumulation of pericardium. Histological changes were characterized by interstitial pneumonia, miocarditis, cardiac fibrosis, meningitis, and encephalitis. All observed changes confirm patogenicity of T. vivax. KEY WORDS: Experimental infection, trypanosomiasis, patogenicity. Quatro caprinos foram infectados experimentalmente por via intravenosa com 1,0 ml de sangue contendo aproximadamente 1,25 x 105 tripanossomas/ml, utilizando-se um isolado de Trypanosoma vivax de bovinos infectados naturalmente no município de Catolé do Rocha, Paraíba. A parasitemia e a temperatura foram determinadas diariamente durante quarenta dias. A cada cinco dias realizaram-se coletas de sangue para hemograma e análise bioquímica sérica. Antes do óbito de cada animal procedeu-se à coleta de líquido cefalorraquidiano para avalia o bioquímica e pesquisa da presen a do parasita. Nos animais do grupo infectado registrou-se correla o positiva entre a temperatura retal e a parasitemia. Os animais apresentaram anemia, leucopenia, hipoglicemia, redu o das proteínas totais e colesterol, além de sintomatologia nervosa. A avalia o do líquor revelou diminui o dos níveis de glicose, aumento da enzima lactato desidrogenase, aumento da celularidade e presen a do tripanossomo. As les es macroscópicas encontradas à necropsia foram palidez da carca a, aumento generalizado dos linfonodos, edema pulmonar e acúmulo de líquido no saco pericárdico. As les es histológicas foram pneumonia intersticial, edema pul
Aspectos da biologia reprodutiva de Jatropha curcas L
Paiva Neto, Vespasiano Borges de;Brenha, Jeruska Azevedo Moreira;Freitas, Felipe Barbosa de;Zuffo, M?nica Cristina Rezende;Alvarez, Rita de Cássia Félix;
Ciência e Agrotecnologia , 2010, DOI: 10.1590/S1413-70542010000300005
Abstract: the knowledge of the floral structure and reproductive biology are basic to a more successful for the development of techniques of castration and pollination in plant species. aiming to obtain data about reproductive biology of physyc nut, free and enclosed inflorescences were observed without isolation (positive control) and isolation with nylon for posterior treatment of geitonogamy and xenogamy. so, treatments were positive control (free or unbagged inflorescences), and all other treatments obtained from isolated immature inflorescences enclosed within of fine nylon bags: negative control (without pollination), xenogamy (receiving pollen from another plant); geitonogamy 1 (received pollen from the same inflorescence), geitonogamy 2 (received pollen from another inflorescence of the same plant). the results indicate that the species does not present problems of self-incompatibility resulting in high fertilization and statistically indifferent in all treatments, presenting values above 80%, except for negative control in which the inflorescences were isolated and not pollinated resulting in lack of fertilization and fruit development. these results show the importance insects for success in the reproductive process of this species. the male flowers, pollen donors, opened in the morning, just like the female ones. thus, although there is visitation of insects during all the day, the process of pollination occurs in the morning, and almost total absence of pollen was observed after noon.
Níveis de fósforo total em dietas para alevinos de tilápia-do-nilo
Ribeiro, Felipe Barbosa;Lanna, Eduardo Arruda Teixeira;Bomfim, Marcos Antonio Delmondes;Donzele, Juarez Lopes;Freitas, Anderson Saraiva de;Sousa, Maíra Paula de;Quadros, Moisés;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000600003
Abstract: four hundred and thirty-two nile tilapia (oreochromis niloticus) fingerlings averaging initial weight of 0.60 ± 0.02 g were allotted to thirty-six 150 l-aquaria to determine total phosphorus requirement. the experiment was analyzed as a completely randomized design, with six treatments (0.55, 0.73, 0.94, 1.14, 1.37, and 1.59% of total phosphorus), six replicates and 12 fishes per experimental unit. the fishes were fed diets with 32% of cp and 3,000 kcal of de/kg, during 40 days. quadratic effect was observed for feed/gain ratio and protein efficiency rate and the best results were estimated with 1.10% of total phosphorus, for both variables. linear effect of the dietary phosphorus levels on p retention efficiency rate and p efficiency rate was noticed. no treatment effect on the other variables was observed. the dietary total phosphorus requirement for nile tilapia corresponds to 1.10%.
Um estudo em tradu o cultural no século XIX: Rui Barbosa e o ensino de desenho
Felipe Freitas de Souza
Revista Espa?o Acadêmico , 2010,
Abstract: O século XIX ocidental tem como uma de suas características a difus o da escola primária e da educa o profissional. Como elemento constituinte do currículo da educa o profissional, estaria o ensino de desenho. Em suas obras, Rui Barbosa, apresenta a necessidade de se incluir esta disciplina na escola primária, tornando-a uma institui o economicamente proveitosa por favorecer a prepara o do trabalhador. Através do conceito de tradu o cultural, objetivamos elaborar algumas das influências que Rui Barbosa sofreu e propagou na elabora o de seu pensamento educacional relativo ao ensino de desenho. Concluímos indicando a proficuidade do conceito de tradu o cultural para o objeto de estudo e a circula o de idéias internacionais relativas ao ensino de desenho.
O mercado de trabalho antes de 1930: emprego e "desemprego" na cidade de S?o Paulo
Barbosa, Alexandre de Freitas;
Novos Estudos - CEBRAP , 2008, DOI: 10.1590/S0101-33002008000100007
Abstract: this article seeks to depict the city of s?o paulo?s labour market in the period before the 1930s, sheding light on the social groups that shaped its formation and stressing its main characteristics in terms of occupational structure. it describes a situation of extreme labour instability and flexibility, which are somewhat linked to a structural and congenital excess of labour force.
Raúl Prebisch (1901-1986): a constru o da América Latina e do Terceiro Mundo, de Dosman, Edgar Jr.
Alexandre de Freitas Barbosa
Novos Estudos - CEBRAP , 2012,
Abstract:
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