Exploració per tema "Impedància (Electricitat)"
Ara es mostren els items 21-40 de 144
-
Bioelectrical impedance vector analysis (BIVA) in sport and exercise: systematic review and future perspectives
(Public Library of Science (PLOS), 2018-06-07)
Article
Accés obertAbstract Background: The available scientific literature on the applications of ‘bioelectrical impedance vector analysis’ (BIVA) in sport and exercise is still scarce and very heterogeneous. Objective: The main goal of ... -
Bioimpedance vector analysis and conventional bioimpedance to assess body composition in elderly adults with dementia
(2014-07-05)
Article
Accés obertRationale Although dementia and nutritional status have been shown to be strongly associated, differences in body composition (BC) among elderly with dementia have not yet to be firmly established. Objective To ... -
Bioimpedància: una eina per a l'estudi dels teixits biològics i la diagnosi mèdica
(Societat Catalana de Tecnologia, 2008-10-30)
Audiovisual
Accés obertLa impedància elèctrica és la oposició que presenta un material al pas del corrent elèctric altern. La seva mesura dóna informació sobre aquelles propietats del material que es poden associar a la conducció elèctrica. ... -
Breathing pattern estimation using wearable bioimpedance for assessing COPD severity
(2022-09-19)
Article
Accés obertBreathing pattern has been shown to be different in chronic obstructive pulmonary disease (COPD) patients compared to healthy controls during rest and walking. In this study we evaluated respiratory parameters and the ... -
Broadband electrical impedance spectroscopy for dynamic electrical bio-impedance characterization
(Universitat Politècnica de Catalunya, 2012-01-13)
Tesi
Accés obertThe electrical impedance of biological samples is known in the literature as Electrical Bioimpedance (EBI). The Electrical Bioimpedance enables to characterize physiological conditions and events that are interesting for ... -
Capes primes, transparents i flexibles de nanotubs de carboni: impedància elèctrica i xarxes aleatòries
(Universitat Politècnica de Catalunya, 2010-06-04)
Projecte/Treball Final de Carrera
Accés obert -
Caracterización de cargas eléctricas y electrónicas del automóvil para aplicaciones PLC
(Universitat Politècnica de Catalunya, 2009-07)
Projecte Final de Màster Oficial
Accés obertEl presente proyecto forma parte de un estudio realizado para estimar la viabilidad de la implementación de PLC (Power line communication) en el automóvil. Para ello es necesario estudiar el comportamiento de las líneas ... -
Characterisation of fuel cell state using Electrochemical Impedance Spectroscopy analysis
(2008)
Text en actes de congrés
Accés obert -
Characterization and modeling of the conducted emission of integrated circuits up to 3 GHz
(2014-08-01)
Article
Accés restringit per política de l'editorialIn this paper, an electrical model in order to predict the electromagnetic compatibility (EMC) conducted emission of integrated circuits (ICs) up to 3 GHz is presented. The electrical model predicts the behavior of the ... -
Characterization of acute effects of eccentric exercises on hamstring muscles by MR techniques, localized bioimpedance and creatine kinase.
(2013)
Comunicació de congrés
Accés restringit per política de l'editorial -
Chest movement and respiratory volume both contribute to thoracic bioimpedance during loaded breathing
(Nature, 2019-12-27)
Article
Accés obertBioimpedance has been widely studied as alternative to respiratory monitoring methods because of its linear relationship with respiratory volume during normal breathing. However, other body tissues and fluids contribute ... -
Combining bioimpedance and myographic signals for the assessment of COPD during loaded breathing
(2021-01-01)
Article
Accés obertChronic Obstructive Pulmonary Disease (COPD) is one of the most common chronic conditions. The current assessment of COPD requires a maximal maneuver during a spirometry test to quantify airflow limitations of patients. ... -
Comment on: "Is bioelectrical impedance vector analysis of value in the elderly with malnutrition and impaired functionality"
(2009-02)
Article
Accés restringit per política de l'editorial -
Compact, wideband impedance tuner using a three-line-microstrip structure
(Institution of Electrical Engineers, 2018-05-03)
Article
Accés obertA novel three-line-microstrip compact impedance tuner is presented. It is based on a multimodal structure wherein six variable capacitances, implemented with two parallel-connected varactors each, create multiple interactions ... -
Comparison between nonlinear measurements in patterned and unpatterned thin films
(IOP PUBLISHING LTD, 2004-07-31)
Article
Accés obertThis work compares two alternative methods of characterizing the nonlinearities in a 10 × 10 mm2 superconducting thin film. Both methods are based on measuring the intermodulation distortion in high temperature superconducting ... -
Compensation of impedance meters when using an external front-end amplifier
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2002-04-30)
Article
Accés obertFour-terminal impedance meters based on pseudo-bridges yield unexpected uncertainties when using high-contact-impedance electrodes. Adding a front-end amplifier to the impedance meter and rearranging the connection of the ... -
Contribución a la obtención de imágenes paramétricas en tomografía de impedancia eléctrica para la caracterización de tejidos biológicos
(Universitat Politècnica de Catalunya, 1998-12-14)
Tesi
Accés obertEl objetivo de la tesis es el desarrollo de métodos para el análisis tanto in vivo como in vitro de la composición y estructura de los tejidos biológicos mediante técnicas basadas en la medida a distintas frecuencias de ... -
Contributions to the measurement of electrical impedance for living tissue ischemia injury monitoring
(Universitat Politècnica de Catalunya, 2005-02-28)
Tesi
Accés obertAquesta tesi es centra en el desenvolupament i l'ús d'una sonda miniaturitzada de silici per a la mesura de la impedància elèctrica de teixits vius tous. El propòsit d'aquestes mesures d'impedància és la monitorització ... -
Control and modulation techniques applied to converters with impedances networks for traction systems
(2017-01-20)
Article
Accés obertThe development of different topologies of power converters with impedance networks have opened up new lines of research, its application in different areas such as transmission systems, high voltage, photovoltaic ... -
Control design for multiphase synchronous buck converters based on exact constant resistive output impedance
(Institute of Electrical and Electronics Engineers (IEEE), 2013-11)
Article
Accés restringit per política de l'editorialThis paper describes a control design methodology based on output impedance analysis for multiphase synchronous buck converters. This design leads to an optimal output voltage transient response. Two design alternatives ...