Dynamic Contact Point
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Finite element formulation and analysis of a functionally graded Timoshenko beam subjected to an accelerating mass including inertial effects of the mass
Abstract This study describes a new finite element method that can be used to analyse transverse and axial vibrations of a Functionally Graded Material (FGM) beam under an accelerating / decelerating mass. The differential equations of the FGM beam are obtained using First-order Shear Deformation Theory (FSDT). In these equations, the interaction terms of ma
Lat. Am. j. solids struct.. Publicado em: 08/10/2018
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2. An arbitrary lagrangian-eulerian method for surface-tension dominated flows with contact lines / Simulação numérica de escoamentos bidimensionais com superfícies livres e linhas de contato dinâmicas
An arbitrary lagrangian-eulerian finite element method to solve surface tension dominated flows is presented. Such flows are important in many applications, particularly in capillary channels, that appear in microscale flows. The resolution of such flows presents several challenges that are addressed in this work. The flow is solved only in the liquid phase,
Publicado em: 2010
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3. O manejo de questões da sexualidade emergentes na relação medico-paciente no setting da consulta ginecologica : um estudo clinico-qualitativo
This study s objective essence was the narrated gynaecologists experiences in the face of sexuality questions within the remit of a medical consultation. Our initial hypothesis was that there had been a certain modulated effective distancing, for the physician-patient relationship, established as a defence mechanism, with the purpose of being able to manage,
Publicado em: 2007
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4. O manejo de questões da sexualidade emergentes na relação medico-paciente no setting da consulta ginecologica : um estudo clinico-qualitativo
This study?s objective essence was the narrated gynaecologists? experiences in the face of sexuality questions within the remit of a medical consultation. Our initial hypothesis was that there had been a certain modulated effective distancing, for the physician-patient relationship, established as a defence mechanism, with the purpose of being able to manage
Publicado em: 2007
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5. Evaluation of cutting forces and prediction of chatter vibrations in milling
The prediction of chatter vibrations between the cutter and workpiece is important as a guidance to the machine tool user for an optimal selection of depth of cut and spindle rotation, resulting in maximum chip removal rate without this undesirable vibration. This can be done by some approaches. In this work, an analytical method is applied in which the time
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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6. Perspectiva historica da organização do sistema educacional da Guine-Bissau
The main goal of this work was to document and analyze the educational structures of Guinea-Bissau, the poor infra-structure let by Portuguese colonialism, and the implementation of the new educational system by Party African, in occasion of the independence of Guinea and Cap Verde s (PAIGC). The analysis was done evaluating the performance of the successive
Publicado em: 2004
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7. Effect of Ionic Strength on Initial Interactions of Escherichia coli with Surfaces, Studied On-Line by a Novel Quartz Crystal Microbalance Technique
A novel quartz crystal microbalance (QCM) technique was used to study the adhesion of nonfimbriated and fimbriated Escherichia coli mutant strains to hydrophilic and hydrophobic surfaces at different ionic strengths. This technique enabled us to measure both frequency shifts (Δf), i.e., the increase in mass on the surface, and dissipation shifts (ΔD), i.e.
American Society for Microbiology.
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8. Spatial cues serving the tactile directional sensibility of the human forearm.
1. Tactile directional sensibility is considered to rely on the parallel processing of direction-contingent sensory data that depend on skin stretching caused by friction, and spatial cues that vary with time. A temperature-controlled airstream stimulus that prevented the activation of stretch receptors was used to investigate directional sensibility for the
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9. Creating a dynamic picture of the sliding clamp during T4 DNA polymerase holoenzyme assembly by using fluorescence resonance energy transfer
The coordinated assembly of the DNA polymerase (gp43), the sliding clamp (gp45), and the clamp loader (gp44/62) to form the bacteriophage T4 DNA polymerase holoenzyme is a multistep process. A partially opened toroid-shaped gp45 is loaded around DNA by gp44/62 in an ATP-dependent manner. Gp43 binds to this complex to generate the holoenzyme in which gp45 act
The National Academy of Sciences.
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10. An H-bond between two residues from different loops of the acetylcholine binding site contributes to the activation mechanism of nicotinic receptors
The molecular mechanisms of nicotinic receptor activation are still largely unknown. The crystallographic structure of the acetylcholine binding protein (AChBP) reveals a single H-bond between two different acetylcholine binding loops. Within these homologous loops we systematically introduced α4 residues into the α7/5HT3 chimeric receptor and found that t
Oxford University Press.
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11. Src SH3/2 Domain-mediated Peripheral Accumulation of Src and Phospho-myosin Is Linked to Deregulation of E-cadherin and the Epithelial-Mesenchymal Transition
Elevated Src kinase in epithelial cancer cells induces adhesion changes that are associated with a mesenchymal-like state. We recently showed that Src induces dynamic integrin adhesions in KM12C colon cancer cells, whereas E-cadherin–dependent cell-cell contacts become disorganized. This promotes a fibroblastic-like morphology and expression of the mesench
The American Society for Cell Biology.