Search results for " Flexible"
showing 10 items of 44 documents
Analysing longitudinal turbulence intensity in vegetated channels
2007
Vegetation altering hydrodynamic conditions of an open channel flow controls the exchanges of sediment, nutrients and contaminants. In this paper the turbulence structure of open-channel flow over a flexible grass vegetation is investigated. Velocity measurements were carried out, in a rectangular flume, using a 2D-ADV (Acoustic Doppler Velocimeter) for different values of stem concentration, water discharge, and bed slope. The experimental results showed that: 1) the maximum value of the longitudinal turbulence intensity occurs at a water depth close to the bent vegetation height; 2) the turbulence intensity damps for increasing values of the stem concentration; 3) above the vegetation hei…
Descripción de una metodología docente para el aprendizaje de la fibroscopia flexible
2015
El manejo inadecuado de la vía aérea presenta una elevada morbi-mortalidad. Un dispositivo fundamental para minimizar este riesgo es la fibroscopia flexible. En anestesia no existen programas específicos de formación en vía aérea difícil, por lo que es necesario desarrollar técnicas de aprendizaje en anestesia y en vía aérea difícil. El objetivo de este estudio es validar un plan formativo en vía aérea para el desarrollo de la habilidad de la fibroscopia flexible en médicos residentes de anestesiología. Material y Métodos: Diseñamos un estudio prospectivo sobre 1353 pacientes programados para cirugía con anestesia general y que necesitaban una intubación endotraqueal. Se evaluaron 51 reside…
Self-Cleaning Bending Sensors Based on Semitransparent ZnO Nanostructured Films
2023
The design of multifunctional nanostructured materials is the key to the development of smart wearable devices. For instance, nanostructures endowed with both piezoelectric and photocatalytic activities could well be the workhorse for solar-light-driven self-cleaning wearable sensors. In this work, a simple strategy for the assembly of a flexible, semitransparent piezophotocatalytic system is demonstrated by leveraging rational wet chemistry synthesis of ZnO-based nanosheets/nanoflowers (NSs/NFs) under basic pH conditions onto flexible ITO/PET supports. A KMnO4 pretreatment before the ZnO synthesis (seeded ZnO) allows for the control of the density, size, and orientation of the NSs/NFs syst…
Arrangements de cercles sur une sphère: Algorithmes et Applications aux modèles moléculaires representés par une union de boules
2008
Since the early work of Richard et al., geometric constructions havebeen paramount for the description of macromolecules and macro-molecularassemblies. In particular, Voronoï and related constructions have beenused to describe the packing properties of atoms, to compute molecularsurfaces, to find cavities. This thesis falls in this realm, andafter a brief introduction to protein structure, makes fourcontributions.First, using the sweep line paradigm of Bentley and Ottmann, wepresent the first effective algorithm able to construct the exactarrangement of circles on a sphere. Moreover, assuming the circlesstem from the intersection between spheres, we present a strategy to reportthe covering …
MAS Simulation of a “Bush Taxi” Transportation Service : Summary of a project carried out during the MAPS training course
2010
The human and social sciences have always sought to improve their tools and resources in order to spread their knowledge. The most recent of these tools, Multi-Agent Systems (MAS), also known as Agent-Based Models (ABM), is a remarkable means of formalization and visualization of spatial processes. Multi-Agent Systems have already proved to be extremely useful modeling tools in various disciplines such as epidemiology, biology, and ecology, but also economics and geography (Amblard F. 2006). Today's research and methods aiming to deal with spatial problems are more and more treated within the paradigm and theories of complex systems. Indeed, one of the advantages of multi-agent systems, in …
On the Impact of Heat Pumps Electric Load on the Power Consumption of Lampedusa
2020
The present paper reports the results of a simulation study regarding the impact of the adoption of heat pumps for domestic hot water production in the island of Lampedusa (Italy). In the study, it has been assumed to replace electric storage water heaters with heat pumps at every dwelling of the about four thousand domestic end-users of the island and, in addition, to control the heat pump operation in order to enhance some parameters that characterize the quality of the generation and distribution system of the island (power peak, energy losses and voltage drop). According to the results of the simulations, while the replacement of electric storage water heaters with heat pumps is able to…
Medidas ordinarias de atención a la diversidad
2008
Se describen las medidas ordinarias de atención a la diversidad en las diferentes etapas de la enseñanza obligatoria para el alumnado con necesidades específicas de apoyo educativo en la normativa española derivada de la LOE
Beyond the screen
2021
Our didactic experiences in the field of architectural design, in courses that have always had a strong workshop character, have been varied in recent years and have been carried out in different variants that, when considered as a whole, allow us to reflect on the problems and the challenges faced during the pandemic. Indeed, a didactic normally conducted with compulsory attendance suffered in a sudden and unexpected way from the cancellation of physical presence, the loss of contact with people and the “corporeality” of the project. Moreover, the absence of the physical space of the classroom (a scene inherent to the laboratory) soon led to the search for new tools and appropriate methods…
Flexible Perfluoropolyethers-Functionalized CNTs-Based UHMWPE Composites: A Study on Hydrogen Evolution, Conductivity and Thermal Stability
2022
Flexible conductive composites based on ultra-high molecular weight polyethylene (UHMWPE) filled with multi-walled carbon nanotubes (CNTs) modified by perfluoropolyethers (PFPEs) were produced. The bonding of PFPE chains, added in 1:1 and 2:1 weight ratios, on CNTs influences the dispersion of nanotubes in the UHMWPE matrix due to the non-polar nature of the polymer, facilitating the formation of nanofillers-rich conductive pathways and improving composites’ electrical conductivity (two to five orders of magnitude more) in comparison to UHMWPE-based nanocomposites obtained with pristine CNTs. Electrochemical atomic force microscopy (EC-AFM) was used to evaluate the morphological changes dur…
Análisis del papel mediador de las capacidades de innovacion tecnológica en la relación entre la form’a organizativa flexible y el desempeño organiza…
2010
ResumenEste trabajo examina la relación entre la forma organizativa flexible y el desempeño organizativo tomando como variables mediadoras las capacidades para la innovación tecnológica, basándose para ello en los postulados del Enfoque Basado en Recursos. Esta cuestión de investigación es importante porque nos permite comprender mejor las variables antecedentes de la capacidad de innovación tecnológica relacionadas con el diseño organizativo y sus efectos en el desempeno organizativo. Para el contraste empírico se toma una muestra de 159 empresas industriales españolas y se modeliza un sistema de ecuaciones estructurales mediante la técnica Partial Least Squares (PLS). Los resultados muest…