Rms Value
Mostrando 1-12 de 40 artigos, teses e dissertações.
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1. System to measure torsion modulus of polymers using the deformation energy method
Abstract This paper presents an alternative method to measure the torsion modulus, G, for samples of polymers. We constructed a measurement system with a force sensor (FS) and a rotational movement sensor (RMS) to obtain a relationship between force (F) and torsion angle (θ). An expression that could return the value of G was deduced using the deformation e
Polímeros. Publicado em: 01/08/2019
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2. Comportamiento magnético del acero AISI 304 en ensayos de tracción uniaxial
ABSTRACT During the magnetization process of a ferromagnetic material, the magnetic domain walls are forced to move due to the magnetic field influence. The domain walls must overcome the stress produced by the pinning sites (grain boundary, dislocations, inclusions, etc.), producing discrete jumps in the magnetization. These jumps can be detected with a sen
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Proposal of surface electromyography signal acquisition protocols for masseter and temporalis muscles
Abstract Introduction The aim of this study was to propose a method of electrodes positioning on the superficial masseter and anterior temporalis muscles for surface electromyographic (sEMG) recordings in order to overcome some known methodological constraints. Methods Fifteen volunteers with normal occlusion participated in two experimental sessions withi
Res. Biomed. Eng.. Publicado em: 2017-10
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4. Influence of subcutaneous fat on mechanomyographic signals at three levels of voluntary effort
Abstract Introduction This study aims to assess the influence of different skinfold thicknesses (ST) and their relation to the attenuation of the mechanomyographic (MMG) signal at different force levels (maximal voluntary contraction – MVC, 40% of MVC and 70% of MVC) of the rectus femoris muscle. Methods Fifteen volunteers were divided in two groups: ST
Res. Biomed. Eng.. Publicado em: 12/01/2017
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5. Radio-Wave Propagation Model for UHF Band in Different Climatic Conditions with Dyadic Green’s Function
AbstractThis article proposes a deterministic radio propagation model using dyadic Green's function to predict the value of the electric field. Dyadic is offered as an efficient mathematical tool which has symbolic simplicity and robustness, as well as taking account of the anisotropy of the medium. The proposed model is an important contribution for the UHF
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2015-06
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6. Desenvolvimento de ferramenta de comparação de técnicas de processamento de sinais para determinar fadiga muscular por meio do sinal emg / Toolkit development for signals processing technics comparison to detect muscular fadigue by EMG signal
This study aimed to development of a computational tool for electromyographic signal (EMG) analysis by signal processing techniques to determine muscular fatigue. With Ethics Committee of Federal University of Goiás approve were recorded from the dominant biceps brachii of 10 volunteers, that did not ever had muscular disease. The protocol consisted on get
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/07/2012
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7. Análise eletromiográfica e da força do músculo masseter em indivíduos com distintos padrões craniométricos / Electromyographic analysis and strength of the masseter muscle in individuals with distinct craniometric patterns
Surface electromyography is a hardware that supports a deeper study about pathologies in areas that works with the muscular movement. Several studies reports that subjects with distinct craniometrical patterns may exhibit different movement functions. Thirty one subjects were analysed, divided in three groups (09 dolichocephalics, 14 mesocephalics and 08 bra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/01/2012
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8. Acute kidney injury in AIDS: frequency, RIFLE classification and outcome
The objective of the present study was to evaluate the characteristics of acute kidney injury (AKI) in AIDS patients and the value of RIFLE classification for predicting outcome. The study was conducted on AIDS patients admitted to an infectious diseases hospital inBrazil. The patients with AKI were classified according to the RIFLE classification: R (risk),
Brazilian Journal of Medical and Biological Research. Publicado em: 2010-11
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9. Electromyographic analysis of the masseter, temporal and orbicularis oris muscles in young people with class II, division 1 malocclusion after treatment with extraoral appliance of occipital traction / Analise eletromiografica dos musculos masseter, temporal e orbicular da boca em jovens com maloclusão classe II, 1ª divisão dentaria, apos o uso de aparelho extrabucal de tração occipital
The surface electromyography is an excellent way to evaluate the muscle function. However, it presents limitations, because the great variability in the amplitude of the electromyographic signal obtained. To reduce this variability, has been proposed the normalization of the electromyographic signal. The process consist of dividing the raw electromyographic
Publicado em: 2010
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10. Electromyographic evaluation of the upper lip according to the breathing mode: a longitudinal study
The present study aimed at analyzing and comparing longitudinally the EMG (electromyographic activity) of the superior orbicularis oris muscle according to the breathing mode. The sample, 38 adolescents with Angle Class II Division 1 malocclusion with predominantly nose (PNB) or mouth (PMB) breathing, was evaluated at two different periods, with a two-year i
Brazilian Oral Research. Publicado em: 2009-12
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11. Concentration fields near air-water interfaces during interfacial mass transport: oxygen transport and random square wave analysis
Mass transfer across a gas-liquid interface was studied theoretically and experimentally, using transfer of oxygen into water as the gas-liquid system. The experimental results support the conclusions of a theoretical description of the concentration field that uses random square waves approximations. The effect of diffusion over the concentration records wa
Brazilian Journal of Chemical Engineering. Publicado em: 2009-09
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12. Influência da força muscular respiratória pré-operatória na evolução clínica após cirurgia de revascularização do miocárdio / The influence of respiratory muscle strength in clinical evolution after coronary artery bypass graft
Surgical procedures may affect respiratory muscles through various mechanisms. Previous patients health conditions may also contribute to increase this dysfunction. The objective of this study was to verify if respiratory muscle strength in the preoperative phase could influence the outcomes after coronary artery bypass graft surgery (CABG). It was an descri
Publicado em: 2009