Search results for "component"
showing 10 items of 1682 documents
Mussels as a model system for integrative ecomechanics.
2015
Copyright © 2015 by Annual Reviews. All rights reserved. Mussels form dense aggregations that dominate temperate rocky shores, and they are key aquaculture species worldwide. Coastal environments are dynamic across a broad range of spatial and temporal scales, and their changing abiotic conditions affect mussel populations in a variety of ways, including altering their investments in structures, physiological processes, growth, and reproduction. Here, we describe four categories of ecomechanical models (biochemical, mechanical, energetic, and population) that we have developed to describe specific aspects of mussel biology, ranging from byssal attachment to energetics, population growth, an…
Percezione aptica e schema corporeo in soggetti con obesità grave
Characterization of glyceridic components of Sicilian extra virgin olive oils using LC/MS and L.D.A.
2009
Sine cura. Verso il ri-ciclo dell'architettura del secondo Novecento
2019
Gli argomenti discussi nel saggio interrogano il destino che il Codice dei Beni Culturali (2004- 2011) determina per le opere del secondo Novecento. Nella costruzione del futuro di questi manufatti, che per funzione, tecnologia e cicli d’uso sono spesso segnati dall’obsolescenza e dall’abbandono, le ambiguità e le incongruenze delle attuali procedure legislative sollecitano profondamente il ruolo culturale delle esperienze di ricerca che usano metodologie meta progettuali. Il confronto fra alcuni casi italiani ed altri europei rimarca il ruolo del progetto nella costruzione di una prospettiva di tutela trasformativa per il costruito del secondo Novecento. Nel quadro di azione marcato dall’o…
Streams as Seams: Carving trajectories out of the time-frequency matrix
2020
A time-frequency representation of sound is commonly obtained through the Short-Time Fourier Transform. Identifying and extracting the prominent frequency components of the spectrogram is important for sinusoidal modeling and sound processing. Borrowing a known image processing technique, known as seam carving, we propose an algorithm to track and extract the sinusoidal components from the sound spectrogram. Experiments show how this technique is well suited for sound whose prominent frequency components vary both in amplitude and in frequency. Moreover, seam carving naturally produces some auditory continuity effects. We compare this algorithm with two other sine extraction techniques, bas…
Passive components for reducing environmental impacts of buildings:analysis of an experimental green roof
2020
The reduction of the environmental impacts related to the building sector is a matter of outmost importance concerning the sustainable utilization of resources related to human activities. Such sector is in fact responsible for about 40% of both release of pollutants in the atmosphere and energy consumption. When trying to reduce buildings’ environmental impacts, as well as to limit their energy consumption, building envelope passive systems can be used. Amongst these, green roofs have been gaining global attention due to their benefits in terms of resilience and sustainability, in order to mitigate the unfavourable urbanization effects. Research on the green roof has been indeed increasing…
Environmental assessment of a new building envelope material derived from urban agriculture wastes : the case of the tomato plants stems
2023
Abstract Purpose Decarbonizing cities is one of today’s biggest challenges. In this regard, particular attention has been paid on improving the environmental performance of buildings. In this framework, this work consists in assessing the environmental impact of an innovative building envelope component derived from urban agriculture (UA) wastes. In fact, rooftop UA seems to be a possible solution to the rising food demand due to increasing urban demographic growth. Consequently, rooftop UA wastes need to be treated in sustainable ways. Methods This study aims to determine the carbon footprint and embodied energy of a new infill wall material, derived from UA wastes produced by a building r…
Le caratteristiche termofisiche del patrimonio edilizio della città di Palermo
2008
Un ambiente confinato è un rapporto continuo con il contesto bioclimatico esterno attraverso l'involucro edilizio, che notoriamente svolge una funzione di protezione e di filtro rispetto agli input esterni. Una corretta ottimizzazione della interfaccia edificio clima è legata, fra gli altri fattori, anche alla selezione di materiali le cui carayyeristiche termofisiche siano tali da agevolare il conseguimento della suddetta ottimizzazione. In particolare, la conoscenza del tempo di ritardo fra l'onda termica incidente e quella emergente all'interno dello spazio confinato, associata alla stima del fattore di attenuazione del flusso di calore, è presupposto di base per una corretta progettazio…
Componenti innovativi per l’edilizia sostenibile: evidenze sperimentali
2016
Sulla spinta delle sempre più stringenti normative in tema di efficienza energetica degli edifici, l’Università degli Studi di Palermo ha posto in essere un laboratorio di materiali naturali e di componenti edilizi passivi, finalizzato all’analisi delle prestazioni energetiche di elementi d’involucro caratterizzati da elevate prestazioni energetiche ed ambientali. In particolare, sono oggetto di indagini sperimentali alcuni elementi d’involucro realizzati con mix di materiali naturali e minerali ed alcune configurazioni di coperture a verde. I primi risultati sperimentali sembrano confermare la praticabilità di siffatte soluzioni, almeno limitatamente ai climi mediterranei.
Design of a wiper as compliant mechanisms with a monolithic layout
2020
The increasingly important need to design simpler structures, reducing the number of constituent components, has motivated the approach outlined in this paper which proposes an effective re-engineering example of a product belonging to the automotive industry, combining the advantages offered by the compliant mechanisms with production opportunities linked to the use of additive manufacturing. Take advantage of compliant mechanisms makes it possible to significantly improve the component's production phase, leading to undoubted benefits on the supply chain and on product’s time to market, benefits made possible by exploiting the outstanding characteristic of additive manufacturing to produc…