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Search Results: 1 - 10 of 176523 matches for " Dutra Clandio de Freitas "
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Digital morphometric analysis of the aortic wall in pigs following implantation of dacron-covered stents versus non-covered stents
Dutra, Clandio de Freitas;Pereira, Adamastor Humberto;
Acta Cirurgica Brasileira , 2004, DOI: 10.1590/S0102-86502004000300006
Abstract: purpose: to evaluate, by digital morphometry, the intimal thickening after the placement of two different kinds of stents: polyester covered stainless steel stents (dacron) and non-covered stents implanted in young pigs' infrarenal aortas. methods: the experiment was carried out on two separate groups of pigs. eight polyester-covered stainless steel stents (dacron) and eight stainless steel stents (30-mm long, 8-mm diameter) were deployed through extraperitoneal approach in the normal infrarenal aorta of 16 normolipemic pigs. to allow the passage of the delivery system, a small arteriotomy was performed (phase i). after four weeks, the aorta with the stent was removed en bloc. (phase ii). the values of the hematimetric and lipid analysis did not show any changes that could influence the study. tissue samples of the fixing sites (proximal and distal) of the stents were taken. microscope slices were prepared and submitted to verhoeff's hematoxilin and eosin techniques and sent to morphometric analysis. results: the intima immediately proximal to the device was thicker in the group of covered stents with marginal significance (p=0.054). the distal intimal layer (p=0.185), proximal medial layer of the proximal portion (p=0.141) and distal portion (p=0.375) did not present statistical difference between the two groups. conclusions: patency was 100% in both groups of these normolipemic pigs. after four weeks the intimal layer immediately proximal to the covered stents was ticker when compared to uncovered stents, but this had a borderline significance. the intimal layer distal to covered stents and the media proximal or distal to the devices had similar morphometric features when covered and uncovered stents where compared.
Digital morphometric analysis of the aortic wall in pigs following implantation of dacron-covered stents versus non-covered stents
Dutra Clandio de Freitas,Pereira Adamastor Humberto
Acta Cirurgica Brasileira , 2004,
Abstract: PURPOSE: To evaluate, by digital morphometry, the intimal thickening after the placement of two different kinds of stents: polyester covered stainless steel stents (Dacron) and non-covered stents implanted in young pigs' infrarenal aortas. METHODS: The experiment was carried out on two separate groups of pigs. Eight polyester-covered stainless steel stents (Dacron) and eight stainless steel stents (30-mm long, 8-mm diameter) were deployed through extraperitoneal approach in the normal infrarenal aorta of 16 normolipemic pigs. To allow the passage of the delivery system, a small arteriotomy was performed (phase I). After four weeks, the aorta with the stent was removed en bloc. (phase II). The values of the hematimetric and lipid analysis did not show any changes that could influence the study. Tissue samples of the fixing sites (proximal and distal) of the stents were taken. Microscope slices were prepared and submitted to Verhoeff's hematoxilin and eosin techniques and sent to morphometric analysis. RESULTS: The intima immediately proximal to the device was thicker in the group of covered stents with marginal significance (p=0.054). The distal intimal layer (p=0.185), proximal medial layer of the proximal portion (p=0.141) and distal portion (p=0.375) did not present statistical difference between the two groups. CONCLUSIONS: Patency was 100% in both groups of these normolipemic pigs. After four weeks the intimal layer immediately proximal to the covered stents was ticker when compared to uncovered stents, but this had a borderline significance. The intimal layer distal to covered stents and the media proximal or distal to the devices had similar morphometric features when covered and uncovered stents where compared.
Apresenta o Foreword
Eliana de Freitas Dutra
Varia Historia , 2005, DOI: 10.1590/s0104-87752005000200001
Abstract:
Entre a melancolia e a exalta??o: povo e na??o na obra de Plínio Salgado
Dutra, Eliana Regina de Freitas;
Revista Brasileira de História , 1999, DOI: 10.1590/S0102-01881999000100011
Abstract: the article has the aim to show the way in which plínio salgado portrays brazil and its people. he tracks the unique cultural roots of brazilian very own self, therefore contrasting them with the european reality and, by doing so, he defines a concept of nation. our presupposition is that the referential frame which shapes salgado's thinking about people/nation, is the same used in the romanticism. the concepts of people/nation, elaborated in affinity with such referential, must be understood as a constitutive part of the nationalist ideology of "integralismo" in the author's perspective. we are interested in highlighting the fact that the political formulations of plínio salgado were elaborated in a moment of brazilian history, in which the definition of a national identity and character, were considered essential prerequisites for the choice of role models and for establishing patterns of political sociability. thus the importance to highlight the aspects of his thoughts which have points in common with the work from other authors of the time.
Entre a melancolia e a exalta o: povo e na o na obra de Plínio Salgado
Dutra Eliana Regina de Freitas
Revista Brasileira de História , 1999,
Abstract: O artigo pretende mostrar como Plínio Salgado retrata o Brasil e o homem brasileiro, mapeando as raízes culturais "singulares" da nossa brasilidade, em contraste com a realidade européia e, ao fazê-lo, define sua concep o de Na o. O nosso pressuposto é que o quadro referencial que conforma o pensamento pliniano sobre Povo/Na o é o do Romantismo. Os conceitos de Povo/Na o, elaborados em afinidade com esses referentes, devem ser entendidos como parte constitutiva da ideologia nacionalista do integralismo na vers o desse autor. Interessa-nos ressaltar que as formula es políticas de Plínio Salgado foram elaboradas em um momento da história brasileira, em que as defini es da identidade e do caráter nacional brasileiros eram pré-requisitos indispensáveis para a escolha de modelos e o estabelecimento de padr es de sociabilidade política. Daí a importancia de se destacar os seus pontos de contato com a obra de outros ensaístas do período.
Usabilidade e Interatividade em Sistemas Web para Cursos Online
Rejane Cunha Freitas,Marlene de Alencar Dutra
Revista Brasileira de Informática na Educa??o , 2009,
Abstract: Este artigo descreve a pesquisa realizada para avaliar a usabilidade de sistemas Web para ensino a distancia. No intuito de identificar os problemas de usabilidade e suas possíveis consequências para as intera es nos ambientes virtuais de aprendizagem. Inicialmente foi construído um referencial teórico abordando conceitos de intera o humano-computador, usabilidade e interatividade. Em seguida a investiga o foi conduzida através de testes com os usuários, que por meio de questionários opinarem sobre os ambientes virtuais de aprendizagem WebAula e Moodle. Os resultados indicaram problemas de usabilidade relacionados com a navega o, links, nome de categorias, pop-ups e procura nestes sistemas. A partir da hipótese de que tais problemas impedem uma maior e melhor utiliza o pelos usuários dos sistemas Web para cursos online, foram feitas reflex es sobre a usabilidade e a interatividade nos ambientes em estudo.
Stable isotopes and body composition in children: History, fundamentals, and clinical applications  [PDF]
Wendell Costa Bila, Joel Alves Lamounier, André Everton de Freitas, Valmin Ramos Silva, Sylvia Dias Turani, José Eduardo Dutra de Oliveira
Health (Health) , 2013, DOI: 10.4236/health.2013.58A3009
Abstract:

The aim of this study was to gather information on the use of stable isotopes to measure total body water and body composition scan in children. We selected studies in the last 13 years, in addition to classical studies on the subject, indexed in the database PubMed, LILACS, BVS and SciELO. The body composition was characterized by the amount of bone tissue, muscle and adipose tissue, also including the organs as well as levels of body water. Your knowledge becomes increasingly important in light of the changes that occur in the nutritional status of various types of diseases in frameworks, such as diabetes mellitus, protein energy malnutrition, in cases of obesity and metabolic syndrome. The ability to accurately assess body fat mass especially in children is associated with the importance of effective strategies for prevention and treatment of childhood obesity. Historically, in addition to clinical applications, measurements of total body water were used to determine body composition in nutritional studies. To the knowledge of the body composition, the body water can be measured and used by the ingestion of a dose of labeled water. The measured isotope enrichment is a function of the amount of body water. The method of deuterium is particularly interesting for the assessment of body composition in children, due to its characteristics of collection and analysis.

Identifica o e quantifica o de fungos micorrízicos arbusculares autóctones em municípios produtores de citros no Rio Grande do Sul
Souza Paulo Vitor Dutra de,Schmitz José Ant?nio Kroeff,Freitas Ronaldo Santos de,Carniel Edgar
Pesquisa Agropecuária Brasileira , 2002,
Abstract: O objetivo deste trabalho foi identificar e quantificar os esporos de FMA presentes em viveiros e pomares de citros no Rio Grande do Sul. Foram coletadas amostras de solo e de raízes de dez viveiros e doze pomares de oito municípios produtores de citros, nas quais avaliaramse conteúdo nutricional, número de esporos por 100 g de solo seco e coloniza o das radicelas, e determinaramse as espécies autóctones. As espécies, em ordem decrescente de ocorrência, foram: Glomus macrocarpum > Scutellospora heterogama > Acaulospora scrobiculata = Acaulospora birreticulata > Glomus invermaium = Glomus occultum = Entrophospora colombiana > Glomus claroideum = Glomus constrictum > Scutellospora persica.
Toxoplasmose: soroprevalência em puérperas atendidas pelo Sistema único de Saúde
Le?o, Paulo Roberto Dutra;Meirelles Filho, José;Medeiros, Sebasti?o Freitas de;
Revista Brasileira de Ginecologia e Obstetrícia , 2004, DOI: 10.1590/S0100-72032004000800006
Abstract: objective: to establish the rate of toxoplasmosis soroprevalence in postpartum women, attended in two hospitals of the public health system (sus) in cuiabá, and its correlation with age, previous abortion and women's knowledge of the disease. methods: a cross-sectional study including 205 women with ages from 14 to 43 (mean 22.4) years old, attended in these hospitals for two months, in the first or second days postpartum. each woman answered a short questionnaire and had peripheral blood sample collected. blood samples were stored at 20°c until assay. the seroprevalence was determined by quantitative detection of specific igg antibody against toxoplasma gondii, using a microparticle enzyme immunoassay. all samples were assayed at the same time. results: the average number of pregnancies in the women included in this study was 2.2, and the majority of them was pregnant for the first time. the seroprevalence found was 70.7% (165 of 205 women). no statistical correlation was found between seroprevalence and age (p = 0.967) or previous abortion (p = 0.82). most of the women in this study (78%) did not know about toxoplasmosis and no statistical correlation was found between this condition and seroprevalence (p = 0.49). conclusion: the high seroprevalence found in the present study is in accordance with surveys previously reported in our country and other developing countries. among the women included in this study, an expressive number (29.3%) is still under risk of contamination. the lack of statistical correlation between seroprevalence and women's age, lack of knowledge about the disease and report of previous abortion is in accordance with some previous studies and in disagreement with others.
PCR de "Salmonella" spp, "Streptococcus suis", "Brucella abortus" e circovírus suíno tipo 2 em taiassuídeos de vida livre e cativeiro PCR of “Salmonella” spp, “Streptococcus suis”, “Brucella abortus” e Porcine circovirus type 2 in free-living and captive peccaries
Vania Villa Real,Valéria Dutra,Luciano Nakazato,Tatiana Pádua Tavares de Freitas
Revista Brasileira de Saúde e Produ??o Animal , 2010,
Abstract: Os taiassuídeos s o animais silvestres pertencentes a mesma ordem taxon mica dos suínos (Artiodactyla), que apesar de pertencerem a famílias diferentes apresentam várias doen as em comum. Das três espécies existentes, duas ocorrem naturalmente no Brasil: Tayassu tajacu e Tayassu pecari, conhecidas como cateto e queixada, respectivamente. A importancia do estudo dos microrganismos encontrados nestas popula es, justifica-se pelo fato destes poderem agir como reservatórios de doen as para animais domésticos, crescente aumento na cria o comercial de espécies silvestres com objetivos de complementar a renda de produtores rurais e preserva o ecológica, além de quest es de saúde pública. Este estudo verificou a ocorrência de microrganismos patogênicos para suínos em taiassuídeos de cativeiro e de vida livre. A presen a de Salmonella spp., Streptococcus suis, Brucella abortus e Circovírus suíno tipo 2 foi pesquisada pela Rea o em Cadeia pela Polimerase. Dos 31 animais de cativeiro, 25,80% (8/31) foram positivos para Salmonella spp., 22,58% (7/31) para Brucella abortus e 3,22% (1/31) para Streptococcus suis. Das 15 amostras de swab de tonsila dos queixadas de vida livre 13,33% (2/15) foram positivas para Brucella abortus e negativo para Streptococcus suis e Salmonella spp. Todos os animais estudados foram negativos para circovírus suíno tipo 2. A ocorrência de microrganismos foi significativamente (p = 0,0011) maior nos animais de cativeiro do que nos de vida livre, demonstrando a necessidade de abrangência nestas pesquisas tendo em vista o caráter zoonótico da maioria dos agentes pesquisados e da proximidade destes animais ao homem. Palavras-chave: Brucella abortus, Circovírus suíno tipo 2, Salmonella spp., Streptococcus suis, taiassuídeos The tayassuideos are wild animals in the same taxonomic order of pigs (Artiodactyla) and, although belonging to different families, have more in common diseases, which are characterized by the same clinical signs, diagnosis and treatment. From the three species, two occur naturally in Brazil: Tayassu tajacu and Tayassu peccary, also known as collered peccary and white lipped peccary, respectively. The importance of the study of microorganisms found in these populations is because these animals can act as reservoirs of diseases to domestic animal, potential zoonotic risk and a problem to specie conservation. In this study, it was examined the occurrence of pathogenic microorganisms for pigs in tayassuideos from captivity and living free. The presence of Salmonella spp., Streptococcus suis, Brucella abortus and Porcine circ
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