Search results for " effect"
showing 10 items of 7524 documents
Acute neuromuscular, cardiorespiratory and endocrine responses and chronic adaptations to combined strength and endurance training in recreationally …
2013
Genetic and environmental effects on resting electrocardiography and the association between electrocardiography and physical activity, walking endur…
2010
Topological surface wave metamaterials for robust vibration attenuation and energy harvesting
2021
International audience; We propose topological metamaterials working in Hertz frequency range, constituted of concrete pillars on the soil ground in a honeycomb lattice. Based on the analog of the quantum valley Hall effect, a non-trivial bandgap is formed by breaking the inversion symmetry of the unit cell. A topological interface is created between two different crystal phases whose robustness against various defects and disorders is quantitatively analyzed. Finally, we take advantage of the robust and compact topological edge state for designing a harvesting energy device. The results demonstrate the functionality of the proposed structure for both robust surface vibration reduction and …
Thermoelectrics: From history, a window to the future
2019
Thermoelectricity offers a sustainable path to recover and convert waste heat into readily available electric energy, and has been studied for more than two centuries. From the controversy between Galvani and Volta on the Animal Electricity, dating back to the end of the XVIII century and anticipating Seebeck’s observations, the understanding of the physical mechanisms evolved along with the development of the technology. In the XIX century Ørsted clarified some of the earliest observations of the thermoelectric phenomenon and proposed the first thermoelectric pile, while it was only after the studies on thermodynamics by Thomson, and Rayleigh’s suggestion to exploit the Seebeck effect for …
Electrochemical Synthesis of an Organic Thermoelectric Power Generator.
2020
[EN] Energy harvesting through residual heat is considered one of the most promising ways to power wearable devices. In this work, thermoelectric textiles were prepared by coating the fabrics, first with multiple-wall carbon nanotubes (MWCNTs) by using the layer-by-layer technique and second with poly(3,4-ethylenedioxythiophene) (PEDOT) deposited by electrochemical polymerization. Sodium deoxycholate and poly(diallyldimethylammonium chloride) were used as stabilizers to prepare the aqueous dispersions of MWCNTs. The electrochemical deposition of PEDOT on the MWCNT-coated fabric was carried out in a three-electrode electrochemical cell. The polymerization of PEDOT on the fabric increased the…
Competitiveness and Sustainability in tourist firms and destinations
2020
Tourism is a major activity in the global economy, not only in terms of its economic impact but also its social and environmental implications. The management practices and processes adopted by tourist companies and destinations are very heterogeneous and have variable impacts on the triple-bottom-line sustainability (people, profit, planet) of the ecosystem. However, there is still only limited available knowledge about the value of different practices for promoting both sustainable development and greater competitiveness. This Special Issue includes papers that present new ideas, theories, advancements, experiences, evidence or methodologies that support the convergence of economic, socia…
Influence of age on French consumers’ environmentally sustainable behaviour
2011
Présentation confidentielle; absent
LOS PROCESOS DE INFLUENCIA SOCIAL EN ENTORNOS VIRTUALES Y SU INCIDENCIA SOBRE LA EFICACIA GRUPAL
2008
El estudio de la incidencia de las tecnologías de la información y la comunicación (TICs) sobre los procesos de influencia social ha sido el objetivo de diversas investigaciones. En ellas, el papel de estos procesos en la relación entre la modalidad de comunicación y los resultados grupales no queda definido. El objetivo del presente trabajo es clarificar el rol de los procesos de influencia en dicha relación, utilizando dos modalidades de comunicación: videoconferencia y comunicación mediada por ordenador. Para ello, se ha realizado un estudio de laboratorio con 44 grupos distribuidos aleatoriamente entre las dos modalidades de comunicación. Los resultados indican que los procesos de influ…
Prácticas deliberativas, argumentación y pluralismo cívico en la Democracia republicana
2011
La esfera pública constituye el lugar donde la ciudadanía demanda, reclama y discute cualquier decisión política que concierne a sus intereses, sin embargo hemos visto como este modelo democrático participativo se soslaya, lo cual hace que se disminuya la vida política activa de la ciudadanía, para mejorar necesitamos que nuestras instituciones políticas deben de ser rediseñadas para facilitar una mayor comunicación y deliberación democrática, con nuevos paradigmas políticos enfatizados en políticas deliberativas. Precisamos de una reforma democrática que gire hacia un modelo más deliberativo, que fusione los esfuerzos de actores públicos y privados colocando al razonamiento público en el…
Aging of the musculoskeletal system: How the loss of estrogen impacts muscle strength.
2019
Skeletal muscle weakness occurs with aging and in females this is compounded by the loss of estrogen with ovarian failure. Estrogen deficiency mediates decrements in muscle strength from both inadequate preservation of skeletal muscle mass and decrements in the quality of the remaining skeletal muscle. Processes and components of skeletal muscle that are affected by estrogens are beginning to be identified. This review focuses on mechanisms that contribute to the loss of muscle force generation when estrogen is low in females, and conversely the maintenance of strength by estrogen. Evidence is accumulating that estrogen deficiency induces apoptosis in skeletal muscle contributing to loss of…