Limit Equilibrium Method
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Inelastic second-order analysis of steel columns under minor-axis bending
Abstract The inelastic second-order behavior of steel structural columns under minor-axis bending is presented in this article. To study this behavior, a nonlinear frame element formulation is adopted in which the steel's plasticity process is accompanied at the nodal points of each finite element through the refined plastic-hinge method (RPHM). A tangent mo
REM, Int. Eng. J.. Publicado em: 19/06/2019
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2. A New Method for the Determination of Creatinine in Urine Samples Based on Disposable Pipette Extraction
A method based on disposable pipette extraction (DPX) was successfully applied to creatinine determination in urine samples analysis using liquid chromatography with ultraviolet spectrophotometric detection (DPX/LC-UV). DPX variables, number of draw/eject cycles, sample pH, and type of the desorption solvent, were employed in a factorial experimental design
J. Braz. Chem. Soc.. Publicado em: 2018-04
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3. VALIDAÇÃO DE MÉTODO POR MEFS-HS/CG-EM PARA DETERMINAÇÃO DE CARBARIL EM PLASMA SANGUÍNEO
The aim this research is to develop a HS-SPME/GC-MS method to analyze the carbaryl in blood plasma samples of the rural workers, who live round the perimeter of Chapada do Apodi-CE. This was achieved by chromatographic signal of the 1-naftol, degradation product of carbaryl with the intention of evaluating the degree of exposure of the workers to pesticides,
Quím. Nova. Publicado em: 2017-06
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4. 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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5. Development of Surface Plasmon Resonance-Based Immunosensor for Detection of Brucella melitensis
A label-free optical immunosensor was developed based on surface plasmon resonance (SPR) method for rapid and selective detection of Brucella melitensis. This immunosensor was constructed by immobilizing capture antibody on 11-mercaptoundecanoic acid modified gold disk. This fabricated immunosensor detected B. melitensis at a concentration range from 103 to
J. Braz. Chem. Soc.. Publicado em: 2016-11
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6. Adicção a drogas e funcionamentos limites: suas expressões e convergências no Rorschach / Drug Addiction and Borderline Personality: their expressions and convergences at Rorschach
The drug addiction is characterized through the use of a substance, to which the power of functioning as the only mean capable of bringing relief to the anguish states internally lived by an individual is attributed. There is no consensus regarding the gathering of chemically dependent patients in a specifically addictive structure, however, in spite of the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/10/2012
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7. An accelerated incremental algorithm to trace the nonlinear equilibrium path of structures
This paper deals with the convergence acceleration of iterative nonlinear methods. An effective iterative algorithm, named the three-point method, is applied to nonlinear analysis of structures. In terms of computational cost, each iteration of the three-point method requires three evaluations of the function. In this study the effective functions have been
Lat. Am. j. solids struct.. Publicado em: 2012-08
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8. Construction of Lyapunov functions for the estimation of basins of attraction
Technical systems are often modeled through systems of differential equations in which the parameters and initial conditions are subject to uncertainties. Usually, special solutions of the differential equations like equilibrium positions and periodic orbits are of importance and frequently the corresponding equations are only set up with the intent to descr
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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9. Desenvolvimento das barras imunosorventes de agitação e avaliação das técnicas extração sortiva em barra de agitação, microextração em sorvente empacotado e cromatografia líquida para análise de antidepressivos em amostras de plasma / Development of immunosorbent stir bars and evaluation of stir bar sorptive extraction, microextraction by packed sorbent and liquid chromatography for the analysis of antidepressants in plasma samples
In this work, polyclonal and monoclonal anti-fluoxetine antibodies were developed in rabbits and mice by immunization with fluoxetine-bovine albumin conjugate, respectively. The developed antibodies were characterized on the basis of the specificity against the drug by ELISA (enzyme linked immunosorbent assay) and, subsequently they were purified by labmade
Publicado em: 2010
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10. Análise tridimensional de estabilidade de talude utilizando o método de equilíbrio limite aperfeiçoado / Three-dimensional analysis of slope stability using the limit equilibrium method improved
Esta dissertação tem por objetivo principal investigar uma técnica de análise tridimensional (3D) de estabilidade de taludes pelo método do equilíbrio limite aperfeiçoado. É também objetivo deste trabalho avaliar a aplicabilidade prática do método de análise 3D, interpretar a significância física do estado de tensões 3D na estabilidade de talu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/09/2009
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11. ANÁLISE DA INFLUÊNCIA DE BARREIRAS HIDRÁULICAS NO PADRÃO DO FLUXO E NA ESTABILIDADE DE TALUDES DE CAVAS A CÉU ABERTO DE MINAS DE FERRO DO QUADRILÁTERO FERRÍFERO, M.G
Less permeable layers, dikes and even discontinuities may act as hydraulic barriers, interfering in the pattern of flow, with dangerous consequences in the stability of the mining slopes. This work intends to analyze the possible influences caused by the phyllites of the Batatal formation, acting as hydraulic barriers, in the flow pattern as well as in the s
Publicado em: 2009
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12. ANÁLISE TENSÃO DEFORMAÇÃO E POR EQUILÍBRIO LIMITE DO MECANISMO DE TOMBAMENTO FLEXURAL
The search for maximizing mineral exploitation, associated to the safety measures needed in order to make this activity viable, force us to seek new forms of analysis to achieve these guidelines in an optimum way. The purpose of this work is to contribute to a better explanation of the breakdown of phyllite slopes by flexural toppling in the region of the Qu
Publicado em: 2008