Speed Limit
Mostrando 13-24 de 97 artigos, teses e dissertações.
-
13. 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
-
14. DESENVOLVIMENTO DE UMA TÉCNICA ULTRASSÔNICA PARA AVALIAR TEORES DE ÓLEO E GRAXA EM EFLUENTES DE BIOCOMBUSTÍVEIS
Ultrasound as a metrology tool has many applications in health care, industrial, and chemical analyses. Ultrasonic techniques are rapid, low-cost, non-invasive, and highly repeatable. Although ultrasound can be used to measure emulsions, no effort had been made thus far to optimize its sensitivity for metrological analysis. In this work, a technique for anal
Quím. Nova. Publicado em: 2015-12
-
15. The NoBLOCK Technology A Major Breakthrough in Wet High Intensity Magnetic Separation (WHIMS)
Since its introduction in 1963 by G.H. “Jones”, WHIMS MS has proven to be, worldwide, a major technology for separating several types of ore fines from their contaminants. Unfortunately, despite its superb characteristics, even if the best operational procedures are followed, one main issue lasts. It is the blocking of the matrix gaps by oversized partic
Rem: Rev. Esc. Minas. Publicado em: 2015-09
-
16. Is there a relationship between complaints of impaired balance and postural control disorder in community-dwelling elderly women? A cross-sectional study with the use of posturography
Background: Risk of falls increases as age advances. Complaints of impaired balance are very common in the elderly age group. Objectives: The objective of this study was to investigate whether the subjective perception of impaired balance was associated with deficits in postural control (objective analysis) in elderly community-dwelling women. Method: Stati
Braz. J. Phys. Ther.. Publicado em: 12/06/2015
-
17. Measurement and evaluation of human exposure to vibration transmitted to hand-arm system during leisure cyclist activity
INTRODUCTION: The cycling activity has increased in recent years, either as a means of leisure or physical activity or as means of transport. Discomfort is one of the main complaints for cyclists, especially when related to the type o pavement they use while riding. This work presents a study of measurement and evaluation of human exposure to hand-arm vibrat
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-12
-
18. Measurement of serum estrogen and estrogen metabolites in pre- and postmenopausal women with osteoarthritis using high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry
Although 17β-estradiol (E2) deficiency has been linked to the development of osteoarthritis (OA) in middle-aged women, there are few studies relating other estrogens and estrogen metabolites (EMs) to this condition. We developed a high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry (HPLC-ESI-MS/MS) method to measure the l
Braz J Med Biol Res. Publicado em: 14/11/2014
-
19. Eletrólitos e biomarcadores sanguíneos em equinos submetidos ao teste padrão de simulação de marcha.
The standard four-beat gaited simulation test (TSM) had been used to evaluate four-beat gaited horsess fitness levels. The objectives of this research were evaluated adaptation of blood electrolytes and biomarkers in equine submitted to TSM. It was used 16 horses (Campolina n=8 and Mangalarga-Marchador n=8), males and females, Age ~6,6 years-old. Blood sampl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
-
20. Análise do comportamento eletroaeroelástico de uma seção típica para geração piezelétrica de energia / Electroaeroelastic behavior analysis of a typical section for piezoelectric energy harvesting
Converting aeroelastic vibrations into electricity for low power generation has received growing attention over the past few years. In addition to potential applications for aerospace structures, the goal is to develop alternative and scalable configurations for wind energy harvesting to use in wireless electronic systems. The use of a typical airfoil sectio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/02/2012
-
21. Estudo da influência da força de corte em usinagem a verde nas propriedades mecânicas de cerâmicas sinterizadas / Influence of the cutting force of green machining on the mechanical properties of sintered ceramics
The present study deals with the measurement forces of green machining ceramics and their correlation with the mechanical properties after sintering. The green machining is employed in crude compacts either to check raw formats without compromising the extreme dimensional accuracy or to obtain a preform prior to finish machining after sintering, extensively
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/01/2012
-
22. 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
-
23. Performance characteristics of high performance liquid chromatography, first order derivative UV spectrophotometry and bioassay for fluconazole determination in capsules
The bioassay, first order derivative UV spectrophotometry and chromatographic methods for assaying fluconazole capsules were compared. They have shown great advantages over the earlier published methods. Using the first order derivative, the UV spectrophotometry method does not suffer interference of excipients. Validation parameters such as linearity, preci
Química Nova. Publicado em: 2012
-
24. Teste de atenção concentrada Toulouse-Pierón: atualização dos estudos de padronização, validade e precisão / Toulouse-Pierón Concentrated Attention Test: update of standardization, reliability and validity studies
Toulouse-Pierón test was one of the first tools for an accurate assessment of concentrated attention and it preceded numerous others in many countries, including Brazil. The present study aims at setting new standards for this test, establishing criteria, with validity and reliability studies and an updated bibliography in order to obtain the minimum requir
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2011