Search results for " impr"
showing 10 items of 877 documents
INNOVAZIONE DEI MATERIALI NATURALI: TERRA E NANOTUBI DI ARGILLA PER UNA SFIDA SOSTENIBILE
2019
All’interno del dibattito culturale che vede la questione ambientale come prioritaria e con riferimento a studi e ricerche che negli ultimi anni hanno promosso materiali compositi a base di terra cruda, gli Autori, consapevoli della necessità che il rapporto fra Progetto e Materia debba assumere una nuova centralità supportato dalle specificità della Tecnologia dell’Architettura, illustrano le risultanze di una sperimentazione che ha l’obiettivo di migliorare le prestazioni della terra cruda con l’apporto delle nanotecnologie, sviluppando un ‘nuovo materiale’ con una ridotta embodied energy e una ridotta quantità di emissioni di CO2 in atmosfera.
Performance improvement of a Savonius water rotor with novel blade shapes
2021
Abstract Savonius water rotor is a prominent drag based turbine able to extract energy available in flowing water with low velocity like river streams, tidal currents or other man made water canals. However, in view of its low performance, an enhanced design of the rotor blades is necessary to better its efficiency. Therefore, the present study aims to improve the efficiency of Savonius rotor by changing the blade design. Different blade shapes were investigated numerically using computational fluid dynamics (CFD). Using conventional design, the peak power coefficient was found to be 0.166 at tip-speed ratio of 0.78. However, the peak power coefficient reaches 0.184 using the optimal blade …
La naissance des préférences alimentaires
2012
Pourquoi certains enfants adorent les cornichons alors que d’autres détestent le fromage ? Pourquoi sont-ils si attirés vers le sucré ? Pourquoi certains deviennent difficiles à partir de 2 ans ? Quand doit commencer l’éducation alimentaire ? Comment éveiller le goût des enfants et les accompagner vers l’offre de la table familiale ? Quel est le poids des expériences précoces ? Que faire lorsque les courgettes restent dans l’assiette ? Ces questions viennent souvent aux parents des jeunes enfants, qui sont parfois perplexes quant à l’attitude à adopter. Elles sont aussi abordées de manière plus systématique par les chercheurs. Cet exposé montrera quand et comment les préférences alimentaire…
OPALINE: Observatory of food preferences in infants and children
2010
Périodes et facteurs sensibles pour la formation précoce des préférences alimentaires
2015
Eating behavior is a complex, essentially learned activity critical for development and survival. It can be broken down into several components: when, how, what and how much to eat.1,2 We will mainly describe in this chapter the important periods and factors associated with the development of “what” to eat, or in other words, food preferences and choice. Other aspects relevant to the early development of eating behavior have been previously reviewed.2,3 Although it has previously been shown that food and flavor preference may be influenced by flavor exposure during the prenatal period4-6, we will focus in this chapter on the acquisition of food preferences consecutive to direct exposure of …
Focal Points in Collective Free Improvisation
2013
OLLECTIVE FREE IMPROVISATION (herein abbreviated as CFI), while not a recent phenomenon in music (free jazz’s first experiments date from the late 1950s), remains under-studied. The extant literature either deals with political aspects (Carles and Comolli 2000) or tries to analyze the resulting music, using musicological tools (Jost 1994) or new concepts drawn from the complexity sciences (Borgo 2005). My research on CFI focuses on a cognitive approach, in order to understand the process of collective improvisation: 1 how a group of improvisers who do not know each other and are not using a common referent 2 (Pressing 1988) can answer the challenge of making music together. This paper deals…
"A little deeper into the sea": William Hyde's illustrations to Ford Madox Ford's The Cinque Ports
2021
International audience; The broad aim of this paper is to explore the representation of the sea in its interaction with the coastline of the British Isles. It focuses on Ford Madox Ford [Hueffer]’s The Cinque Ports (Blackwood and Sons, 1900) illustrated by the English artist William Hyde (1857-1925).The original Cinque (i.e. “five”) Ports are located on the English southern coast: Hastings, Sandwich, Dover, Romney and Hythe, to which have been added Rye and Winchelsea. They were granted specific “liberties” by royal charter in the 13th century and they used to provide a line of defence against invasion as well as a point of entry into England. Ford set out to chronicle their history at the …
Microstructuration des dépôts imprimés par jet d'encre de la coalescence des nanoparticules d'argent vers la réalisation d'interconnexions de composa…
2012
Several challenges are still holding back the technological transfer of printed electronics to industry in spite of recent progresses. In this thesis work, the printing method of inks based on silver nanoparticles (=25 nm) was optimized according to its rheology and to the fluid/substrate interactions for the fabrication of electrical interconnections with a thickness of 500 nm. These lines were printed on silicon or flexible substrates and annealed either by conventional (oven or infrared) or selective methods (microwave) at temperatures comprised between 100 and 300 °C.A better understanding of the relationship between process and microstructure of these printed thin films, based on sever…
Morte improvvisa nell'acqua: problemi diagnostici. Presentazione di un caso
2013
Da decenni è aperto un ampio dibattito sulla necessità di distinguere i soggetti chiaramente morti per sindrome asfittica da annegamento e i soggetti rinvenuti morti nell’acqua, per i quali, nel 1999 Modell et al. avevano proposto l’appropriatezza del concetto di “annegamento senza aspirazione”. Questo problema nasce, talora, dal mancato riscontro, in corso di indagini autoptiche e anatomo-isto-patologiche eseguite su soggetti rinvenuti cadavere in acqua, di quadri inequivocabili che consentono di porre diagnosi di certezza di morte per asfissia da annegamento, altre volte, dal riscontro di condizioni patologiche che possono avere influito e/o avere determinato il decesso in acqua. E’ pur v…