Equilibrium Problem
Mostrando 1-12 de 166 artigos, teses e dissertações.
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1. ROBÓTICA EDUCACIONAL, ENSINO DE QUÍMICA E APRENDIZAGEM COOPERATIVA: UMA PROPOSTA PARA O CURSO DE ENSINO SUPERIOR EM ENGENHARIA CIVIL
Students, generally, are afraid of studying chemistry because they understand that it is a very complex area of knowledge and that it doesn’t has use in daily lives and in intended profession, which is a problem we identified in a Civil Engineering course. With this, we proposed a project in this course, based on educational robotics and educational cooper
Química Nova. Publicado em: 2022
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2. The use of psychotropic medications and non-pharmacological approaches in everyday life: a qualitative study of the lived experience
O aumento do consumo de psicotrópicos tem sido observado no Brasil e em outros países ocidentais nas últimas décadas, por diferentes razões. O objetivo deste estudo foi compreender a vivência de indivíduos que utilizaram psicotrópicos para lidar com os problemas enfrentados no cotidiano. Um estudo qualitativo guiado pela fenomenologia hermenêutica f
Rev. latinoam. psicopatol. fundam.. Publicado em: 17/01/2020
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3. Mercado de carne de frango brasileiro no contexto dos novos acordos regionais de comércio: Transpacífico e Transatlântico
Resumo O estudo tem por objetivo examinar os possíveis impactos da implementação dos acordos Transpacífico e Transatlântico sobre o mercado de carne de frango brasileiro. A metodologia aplicada deriva de um Modelo de Equilíbrio Espacial na forma de um Problema de Complementaridade Mista (PCM), baseando na simulação de cinco cenários alternativos, c
Rev. Econ. Sociol. Rural. Publicado em: 28/11/2019
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4. A Intermodalidade no Transporte de Etanol Brasileiro: aplicação de um modelo de equilíbrio parcial
Resumo: A busca por fontes de energia renováveis tem aumentado a demanda mundial de etanol. O Brasil é o segundo maior produtor; porém, os custos para transportar a produção são cada vez mais altos. O objetivo do presente artigo é analisar as alternativas de transporte para o etanol frente às condições da logística vigentes no Brasil. Para tanto,
Rev. Econ. Sociol. Rural. Publicado em: 06/05/2019
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5. Reconfiguration of multi-stage tensegrity structures using infinitesimal mechanisms
Abstract The use of tensegrity structures in soft robotics has seen an increased interest in recent years thanks to their mechanical properties, but the control of these systems remains an open problem. This paper presents a reconfiguration strategy for actuated multi-stage tensegrity structures. The algorithm works on the principle of using the infinitesima
Lat. Am. j. solids struct.. Publicado em: 21/03/2019
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6. Hankel transformation method for solving the Westergaard problem for point, line and distributed loads on elastic half-space
Abstract The Hankel transformation method was used in this work to determine the normal and shear stress distributions due to point, line and distributed loads applied to the surface of an elastic media. The elastic media considered in this study was assumed to be inextensible in the horizontal directions, and the only non-vanishing displacement component is
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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7. Boundary Layer Effects in a Finite Linearly Elastic Peridynamic Bar
Abstract The peridynamic theory is an extension of the classical continuum mechanics theory. The peridynamic governing equations involve integrals of interaction forces between near particles separated by finite distances. These forces depend upon the relative displacements between material points within a body. On the other hand, the classical governing equ
Lat. Am. j. solids struct.. Publicado em: 22/10/2018
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8. Three-Dimensional Determination of Superposed Helical Wires Constraint Ability
Abstract A three-dimensional theoretical model for predicting the maximum force sustained by a flexible line wound around a rigid cylindrical body is developed based on Clebsch-Kirchhoff equilibrium equations, considering its bending rigidity, no sliding, modified non-linear frictional law in terms of stress and an external pressure exerted on the line. Lik
Lat. Am. j. solids struct.. Publicado em: 03/05/2018
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9. UM ESTUDO TERMODINÂMICO DA CORROSÃO DOS AÇOS CARBONO PELO SULFETO DE HIDROGÊNIO - EXPLORANDO CONCEITOS DE EQUILÍBRIO QUÍMICO
This study addresses an inherent problem to the oil and natural gas exploration and production industry, the corrosion of pipes and tanks by H2S. H2S with water emulsified in the oil or H2S with the water vapor mixed in the gas, they make the acid environment leading to corrosion. This is commonly manifested by the formation of insoluble sulfides on the surf
Quím. Nova. Publicado em: 2018-05
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10. Static Limit Analysis of Reinforced Soil Structures by a Simple Finite Element and Second-Order Cone Programming
Abstract To discretize reinforced soil structures in plane strain and predict their collapse load, a simple three-node triangular finite element is formulated based on the static theorem of the limit analysis. The element satisfies the equilibrium equations and the mechanical boundary conditions in a weak sense. A modified Mohr-Coulomb yield surface is adopt
Lat. Am. j. solids struct.. Publicado em: 2017
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11. Heart disease and the stress hypothesis in the mid-twentieth century: a historical review
Abstract Background In the 1920s, heart disease (a noncommunicable disease), was the new leading cause of death in the USA. Simultaneously, experimental progress in the study of stress provided scientific justification for a new type of risk factor. The objective of the present work is to examine the history of heart disease as a public health problem and
Psicol. Reflex. Crit.. Publicado em: 12/12/2016
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12. Research on Phosphorus Removal in Artificial Wetlands by Plants and Their Photosynthesis
ABSTRACT Urban rainfall runoff pollution has become a major reason for water eutrophication problem in the process of urbanization in China, while phosphorus is a significant restrictive factor that influences primary productivity of freshwater system. It's rather significant to conduct phosphorus control in waste water with engineering measures. This resear
Braz. arch. biol. technol.. Publicado em: 20/10/2016