223 research outputs found
Toscana. I Piani Integrati di Sviluppo Urbano Sostenibile (PIUSS), numero monografico 113
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Small historical towns between conservation and revitalization
No full textIn the architectural context, there is an increasing need to deve- lop project strategies to protect and revitalize the villages that characterize the Italian territory, now at risk of survival, preserving their material and immaterial values.
Locorotondo, one of the most important settlements in the Valle d’Itria in Puglia, represents a particularly signi cant case study, since it is unique, and yet with general problems. It is an urban or- ganism with a strong identity, expressed in the close relationship between rural landscape, orography, urban morphology, types of buildings and construction techniques. This raises delicate problems of protection, recovery and reuse compatible with its characters. The paper illustrates an experience conducted in a Master Degree Workshop at the Politecnico di Bari.
Guidelines have been formulated for a recovery plan at the va- rious scales, for the purposes of conservation and enhancement of the old core, based on a careful reading of the context and the existing building heritage.
Then, on the basis of the guidelines, a pilot project was deve- loped for the recovery of an area located on the edge of the original urban settlement, framing it in a system of overall en- hancement of public spaces and of the itineraries for the fruition of the old town center. Finally, the focus was on the problems of some marginal areas, with the aim of recovering the relationship between the historical center, the residential expansions and the diffuse built heritage
An Immersed Particle Heat Exchanger for Externally Fired and Heat Recovery Gas Turbines
No full textDesigning and manufacturing high-efficiency heat exchangers is usually considered a limiting factor in the development of gas turbines employing either heat recovery Joule–Brayton cycles or external combustion. In this work, an innovative heat exchanger is proposed, modeled, and partially tested to validate the developed numerical model employed for its design. The heat exchanger is based on an intermediate medium (aluminum oxide Al2O3) flowing in countercurrent through an hot stream of gas. In this process, heat can be absorbed from the hot gas, temporarily stored, and then similarly released in a second pipe, where a cold stream is warmed up. A flow of alumina particles with very small diameter (of the order of hundreds of microns) can be employed to enhance the heat transfer. Experimental tests demonstrate that simple one-dimensional steady equations, also neglecting conduction in the particles, can be effectively employed to simulate the flow in the vertical part of the pipe, namely, to compute the pipe length required to achieve a prescribed heat exchange. On the other side, full three-dimensional computational fluid dynamics simulations have been performed to demonstrate that a more thorough gas flow and particle displacement analysis is needed to avoid a bad distribution of alumina particles and, thus, to achieve high thermal efficiency.</jats:p
Chemioembolizzazione Epatica (TACE)
No full textVengono discusse le modalità tecniche, le indicazioni cliniche, i risultati clinici ed anatomo-patologici, le complicanze e gli sviluppi futuri della chemioembolizzazione epatica transcatetere nel trattamento dell’epatocarcinoma su cirros
Allium cyrilli Ten. (Amaryllidaceae): typification, taxonomy and update of the Italian distribution
No full textDiagnostic approach to a persistent anterior knee pain
No full textThe case of a 67-year-old female patient with persistent pain in the right anterior knee appeared after she had an accidental fall, is discussed. Laboratory tests and imaging were negative. Persistent pain required MRI. Based on MRI findings the diagnosis of patellar fracture responsible for knee pain could be established
City & Landscape
No full textIl Gruppo si caratterizza per la sua interdisciplinarietà, basata su due capisaldi: il territorio, nelle sue espressioni di città e paesaggio, come focus di interesse; il progetto come strumento di indagine/interpretazione delle problematiche di territori e comunità. Il paper illustra i contenuti metodologici e operativi dei tre principali filoni di ricerca che si dipartono da tale piattaforma comune. Ambiente e paesaggio: progetti di paesaggio, riqualificazione delle coste, recupero e rigenerazione di città e territorio; città contemporanea: housing sociale, strategie di riuso, sostenibilità; innovazione metodologica nella pianificazione: disegno urbano e rinnovamento disciplinare, integrazione con le valutazioni, processi partecipativi, tecnologie abilitanti. E‟ sottesa la circolarità tra ricerca scientifica e terza missione universitaria, nella convinzione del suo ruolo strategico per il rafforzamento della capacity building e delle strutture organizzative degli enti pubblic
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