1,486 research outputs found
Comparative experimental approach to investigate the thermal behaviour of vertical greened façades of buildings
No full textGreening the building envelope is not a new concept, however it has not been fully approved as an energy saving method for the built environment. Vertical green can provide a cooling potential on the building surface, as plants are functioning as a solar filter and prevent the adsorption of heat radiation of building materials extensively. In this study a comparative thermal analysis of vertical green attached to a façade element is presented. An experimental set up (stationary conditions) has been developed to measure the temperature gradient through a reference cavity wall, in order to quantify the contribution of vegetation to the thermal behaviour of the building envelope. The results show temperature differences between the bare wall and between the different vertical greening systems analysed, up to 1.7 °C for the direct greening system and 8.4 °C for the living wall system based on planter boxes after 8 h of heating for summer conditions, due to the different “material” layers involved. However, the insulation material of the bare wall moderates the prevailing temperature difference between the outside and inside climate chamber, resulting in no temperature difference for the interior climate chamber for summer conditions.Materials and Environmen
"Le donne, le ragazze e il mondo che viene"
No full textPer «Agenda 2030 a scuola» sono stati selezionati «12 obiettivi che consentissero di affrontare tematiche con una agevole spendibilità didattica. Su queste tematiche, si sviluppano le monografie raccolte in questo volume, scritte da docenti universitari, ricercatori e ricercatrici o esperti nel proprio settore. Ogni monografia analizza aspetti, problematiche e possibili soluzioni di un obiettivo principale esplicitando allo stesso tempo i collegamenti con gli altri obiettivi dell’Agenda 2030, per fornire una visione il più possibile trasversale e integrata.»
Ecco l’elenco delle monografie e dei relativi autori:
Obiettivo 2. Porre fine alla fame, raggiungere la sicurezza alimentare, migliorare la nutrizione e promuovere un’agricoltura sostenibile (Mauro Mandrioli)
Obiettivo 3. Assicurare la salute e il benessere per tutti e per tutte le età (Giovanni Maga)
Obiettivo 4. Fornire un’educazione di qualità, equa e inclusiva, e opportunità di apprendimento per tutti (Antonella Bachiorri)
Obiettivo 5. Raggiungere l’uguaglianza di genere ed emancipare tutte le donne e le ragazze (Chiara Xausa, Silvana Badaloni, Annalisa Oboe, Claudia Padovani, Lorenza Perini)
Obiettivo 6. Garantire a tutti la disponibilità e la gestione sostenibile dell’acqua e delle strutture igienico-sanitarie (Michele Chieco e Anna Barra Caracciolo)
Obiettivo 7. Assicurare a tutti l’accesso a sistemi di energia economici, affidabili, sostenibili e moderni (Nicola Armaroli, Vincenzo Balzani)
Obiettivo 9. Costruire un’infrastruttura resiliente e promuovere l’innovazione una industrializzazione equa, responsabile e sostenibile (Nicola Nosengo)
Obiettivo 11. Rendere le città e gli insediamenti umani inclusivi, sicuri, duraturi e sostenibili (Mario Grosso)
Obiettivo 12. Garantire modelli sostenibili di produzione e di consumo (Silvia Serranti)
Obiettivo 13. Promuovere azioni, a tutti i livelli, per combattere il cambiamento climatico (Selvaggia Santin)
Obiettivo 14. Conservare e utilizzare in modo durevole gli oceani, i mari e le risorse marine per uno sviluppo sostenibile; Obiettivo 15. Proteggere, ripristinare e favorire un uso sostenibile dell’ecosistema terrestre (Nicholas Barbieri
L’AMICO DI GELLIO (E DI ALTRI AMICI): su "Le Muse in gioco" di Giorgio Bernardi Perini
No full textThis paper carefully examines the rich book that Giorgio Bernardi Perini
aims to present as «his farewell work». The author has collected his verse
translations of Latin works that frequently feature as art re-writings of
ancient originals. As well as such «sovrascritture», or «overwritings» as Bernardi
Perini himself defines them, the collection shows occasional poems and
short memoirs linked to some of the most relevant friend relations the writer
has had throughout a culturally committed life. The review high-lights some
of the most refined and poetical features that make the work not just a
farewell but the first of new contributions that will make our relationship
with the past more valuable and richer in humanity
Le limitazioni all’iscrizione a partiti politici per i magistrati e le sue rationes: tra imparzialità della magistratura e militanza della politica
No full textIl saggio esamina la norma della Costituzione italiana (art. 98, comma 3) che permette di limita- re l’iscrizione ai partiti politici da parte dei magistrati, cercando di individuarne le rationes. Oltre alla tutela dell’imparzialità del giudice, nella duplice accezione di essere e apparire imparziali, si tenta di argomentare l’esistenza di altra finalità, diretta alla tutela non dell’ordine giudiziario, ma bensì della stessa politica e dei partiti.The essay examines art. 98 of the Italian Constitution which allows legislation to limit membership in political parties by judges. This limitation is commonly understood as a tool to protect impartiality, in both senses of being and appearing impartial. The author argues for the existence of another purpose: the protection of politics itself and of the political parties
“Gathering Vetch” by Lu Xun Renarrating History, Between Orality and Writing
No full textThe present article focuses on a short story written by Lu Xun in 1935, «Gathering Vetch», later included in Gushi Xinbian (Old Tales Retold). In this text the author has been faithful to the official biography of the two legendary hermits Boyi and Shuqi, as it was recorded by Sima Qian and commented by Confucius, while on the other hand he could not fail to contaminate it with his irreverent wit, as well as with a variety of unmistakably modern narrative devices. Through a close reading of this single work, the article aims at analyzing Lu Xun’s ambivalent yet vital relationship with the Chinese tradition and folklore; it shows how the writer mingled the most authoritative historical texts (zhengshi) with the unofficial history (yeshi) and oral culture. This mixture between orality and the sacred written word of the Classics was not intended to demystify the canon for the sheer pleasure of it; rather, as this article tries to prove, Lu Xun engaged in a profound and radical rethinking of the Chinese past by retelling it in a new way
Greening the building envelope, facade greening and living wall systems
No full textMaterials and Environmen
Orthodontic partial disimpaction of mandibular third molars prior to surgical extraction
No full textOdontodysplasia of the third molars is a relatively common anomaly. The frequent complications associated with this disorder very often constitute an indication for extraction of the third molar. This surgical treatment can damage the lower alveolar nerve and/or trigger distal bone loss of the second molar, thus jeopardizing the future status of the periodontium. The author presents two case studies treated exclusively with miniscrews with no dental anchorage in order to achieve partial eruption of the third molar moving it away from the lower alveolar nerve and to avoid unwanted impact on other teeth. Following this procedure, the third molar was extracted without complications. In conclusion, this approach can offer an alternative to surgical treatment alone in cases where the proximity of tooth and nerve poses a significant risk
Open government data: Areas and directions for research
No full textThe concept of open data itself is strongly associated with innovative capacity and transformative power (Davies, Perini, & Alonso, 2013). It is increasingly recognized that proactively opening public data can create considerable benefits for several stakeholders, such as firms and individuals interested in the development of value added digital services or mobile applications, by combining various types of Open Government Data (OGD), and possibly other private data. On the other hand, OGD also empowers scientists, journalists and active citizens who want to understand various public issues and policies through advanced data processing and production of analytics (Janssen, 2011a; Zuiderwijk, Helbig, Gil-García, & Janssen, 2014).Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Information and Communication Technolog
Onset di delaminazioni a modo II: analisi FEM mediante elementi coesivi con capacità di danneggiamento a fatica.
No full textThis thesis work focuses on the study of a damage model to be applied to cohesive elements for mode II fatigue delamination for unidirectional laminates (UD HTA/913C). Composite aircraft structures are subjected to a damage mechanism called delamination. The latter can be caused by the presence of hygrothermal loads, assembly problems, maintenance, delaminations created during production. Extensive literature shows that delamination mainly occurs in the opening (Mode I) and shear (Mode II) modes. Once the ENF (End-Notched Flexure) specimen was defined, for the study of mode II delamination, a two-dimensional finite element model was developed through the implementation of a local damage law of the cohesive elements in the Abaqus program. The constitutive behavior of the cohesives is implemented through an external subroutine written in Fortran language (UMAT), which allows to numerically simulate the experimental tests. The first phase of the experimental test predicts a precracking, in which the simulated cohesive elements respect the constitutive law of traction-separation defined by the program. For the fatigue phase, on the other hand, the constitutive behavior of the cohesive element is described by the subroutine. The following work has allowed us to verify the implementation of the UMAT, in the Abaqus environment, to adequately simulate the degradation of cohesive elements in fatigue-stressed composites in the presence of delamination at each load level imposed in the experimental tests
How to resolve cryptic species of polypores: an example in Fomes
No full textSpecies that cannot be easily distinguished based on morphology, but which form distinct phylogenetic lineages based on molecular markers, are often referred to as cryptic species. They have been proposed in a number of fungal genera, including the basidiomycete genus Fomes. The main aim of this work was to test new methods for species delimitation in cryptic lineages of polypores, and to define useful characters for species identification. A detailed examination of a number of different Fomes strains that had been collected and isolated from different habitats in Italy and Austria confirmed the presence of distinct lineages in the Fomes fomentarius clade. Our zero hypothesis was that the Mediterranean strains growing on Quercus represent a species which can be delimited based on morphological and physiological characters when they are evaluated in statistically relevant numbers. This hypothesis was tested based on phylogenetic analysis of the rDNA ITS region, morphological characters of basidiomes and pure cultures, growth rates and optimum growth temperature experiments, mycelial confrontation tests, enzyme activity tests and volatile organic compound (VOC) production. The Mediterranean lineage can unambiguously be delimited from F. fomentarius. A syntype of an obscure and previously synonymized name, Polyporus inzengae, represents the Mediterranean lineage that we recognize as Fomes inzengae, a distinct species. The rDNA ITS region is useful for delimitation of Fomes species. Moreover, also a variety of morphological characters including hymenophore pore size, basidiospore size, and diameter of skeletal hyphae are useful delimiting characters. The ecology is also very important, because the plant host appears to be a central factor driving speciation. Physiological characters turned also out to be species-specific, e.g. daily mycelial growth rates or the temperature range of pure cultures. The production of VOCs can be considered as a very promising tool for fast and reliable species delimitation in the future. © 2019 The Author(s)
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