Rotation Surfaces
Mostrando 1-12 de 33 artigos, teses e dissertações.
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1. Numerical Study on Ultimate Behaviour of Bolted End-Plate Steel Connections
Abstract Bolted end-plate steel connections have become more popular due to ease of fabrication. This paper presents a three dimension Finite Element Model (FEM), using the multi-purpose software ABAQUS, to study the effect of different geometrical parameters on the ultimate behavior of the connection. The proposed model takes into account material and geome
Lat. Am. j. solids struct.. Publicado em: 2016-01
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2. Biofilm inhibition activity of compounds isolated from two Eunicea species collected at the Caribbean Sea
Abstract Biofilm has a primary role in the pathogenesis of diseases and in the attachment of multicellular organisms to a fouled surface. Because of that, the control of bacterial biofilms has been identified as an important target. In the present study, five lipid compounds isolated from soft coral Eunicea sp. and three terpenoids together with a mixture of
Rev. bras. farmacogn.. Publicado em: 2015-12
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3. Superfícies de Weingarten Generalizadas do Tipo Rotacional no 3-Espaço Euclidiano / Generalized Weingarten Surfaces of Rotation in 3- Euclidiano Space
Neste trabalho estudamos as superfícies de rotações S que são Weingarten generalizada, nas quais a curvatura gaussiana K e curvatura média H de tais superfícies satisfazem a seguinte relação (w2r2)K+2wH+1 = 0, onde w e r são funções harmônicas com respeito a forma quadrática s = II+wIII e II, III são a segunda e terceira forma quadrá
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/03/2011
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4. Volumes e Curvaturas Médias na Geometria de Finsler: Superfícies Mínimas / Volumes and Means Curvatures in Finsler Geometry: Minimal Surfaces
In Finsler geometry, we have several volume forms, hence various of mean curvature forms. The two best known volumes forms are the Busemann-Hausdorff and Holmes- Thompson volume form. The minimal surface with respect to these volume forms are called BH-minimal and HT-minimal surface, respectively. Let (R3; eFb) be a Minkowski space of Randers type with eFb =
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2011
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5. Superfícies de Weingarten Generalizadas do Tipo Rotacional no 3-Espaço Euclidiano / Generalized Weingarten Surfaces of Rotation in 3- Euclidiano Space
Neste trabalho estudamos as superfícies de rotações S que são Weingarten generalizada, nas quais a curvatura gaussiana K e curvatura média H de tais superfícies satisfazem a seguinte relação (w2r2)K+2wH+1 = 0, onde w e r são funções harmônicas com respeito a forma quadrática s = II+wIII e II, III são a segunda e terceira forma quadrá
Publicado em: 2011
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6. Laparoscopic nephropexy exposes a possible underlying pathogenic mechanism and allows successful treatment with tissue gluing of the kidney and fixation of the colon to the lateral abdominal wall
OBJECTIVES: Surgical treatment of "Ren Mobilis" has historically been associated with poor results and fairly high morbidity. We have used a transperitoneal laparoscopic approach in order to minimize morbidity. The goal of this study was to evaluate the success rate and to discuss the possible pathogenic mechanism, which has implications for the surgical str
International braz j urol. Publicado em: 2010-02
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7. Analyze performance of capillary tube in small refrigeration system varying the speed compressor / Análise de desempenho do tubo capilar num sistema de refrigeração de pequeno porte com variação da velocidade do compressor
The need to reduce energy consumption in refrigeration and air conditioning is a priority for the refrigeration industry. This has encouraged the development of refrigeration systems more efficient and offer better performance. In this context, increases the importance of applying new technologies to a deeper understanding of these systems and the improvemen
Publicado em: 2009
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8. Clinical and laboratory evaluation of metallic brackets bonded with orthodontic composites / Avaliação clinica e laboratorial da colagem de braquetes metalicos com compositos ortodonticos
The aim of this study was to assess clinically and laboratory the bracket failure rate and shear bond strength of metallic brackets bonded with orthodontic composites. The in vivo study consisted of 20 patients aged between 10.5 to 15.1 years old who had sought corrective orthodontic treatment. Brackets were bonded of the second premolar - second premolar to
Publicado em: 2009
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9. Projeto, fabricação e operação de uma máquina de ensaio de erosão por cavitação
The present work deals with the design, fabrication and operation of a cavitation erosion equipment and with the preliminary results obtained by its testing. A new cavitation erosion testing machine was designed, fabricated and tested, using a rotating disc with holes for generating cavitation. The developed equipment has as main advantages, in relation to t
Publicado em: 2007
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10. Estudo de retificação de vidros ópticos / A study of optical glasses grinding
The development of optical systems, the use of laser and consequently the need of refractive surface with high finish levels and precision are increasing significantly the demand for research on high precision machining. The surfaces obtained with the usual polishing process are lirnited in plane, cilindrical and spherical shape and spend a lot of time to ob
Publicado em: 2006
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11. Modelagem de mancais hidrodinamicos com movimento oscialatorio / Model for hydrodynamic bearings with oscillating motion
In this work was developed a mathematical model for the hydrodynamic lubrication problem applied to bearings with oscillating motion. In contrast with common bearings, this type of bearing does not perform a complete rotation, belonging to a newly defined class: the bearings with oscillatory movement. The motivation lies in the tribology of internal combusti
Publicado em: 2006
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12. Process of physical separation and dryong of inulin obtained from (cichorium intybus L.). / Processos de separação fisica e secagem de inulina obtida a partir de raizes de chicoria (Cichorium intybus L.).
Inulin is a polysaccharide, which can be found in several vegetable products, in which it acts as a reserve carbohydrate. Amongst these vegetables, chicory roots are outlined for inulin production in industrial scale. The application of this carbohydrate at the food industry is related to its ability for substituting sugar and fat, with the advantage of pres
Publicado em: 2006