Search results for "CN"
showing 10 items of 9699 documents
Tecniche di rilevamento architettonico: innovazione e integrazione
2008
In particolare si pone l’attenzione sulle problematiche della conservazione e del restauro dell’architettura dei primi decenni del ‘900 con nuove tecnologie, approfondendo alcune tipologie e problematiche di degrado più presenti sul materiale. Si propone un caso specifico di intervento su un edificio storico al fine di valutarne lo stato di salute e la durabilità del conglomerato cementizio armato tradizionale operando dei confronti con i nuovi calcestruzzi. Documentando con schede di rilievo tipologico-funzionale e tecnologico e con quadri fessurativi, si presentano i primi risultati delle indagini e delle prove distruttive e non-distruttive su alcune parti più rappresentative delle divers…
Mixed Stone-timber Masonry in Traditional Construction: Structural, Architectural and Anti-seismic Features across Europe
2018
This paper investigates the stone masonry with timber reinforcement through the European traditional and historical architecture. It is a remarkable practice consisting of combining different materials to build up a masonry. This technology shows a wide variety of typological, formal, and technological types of buildings across Europe as it is strongly influenced by the nature and availability of local materials, the cultural aspects of the various communities, and the soils geological nature. As a consequence, the same constructive typology is based on different premises and leads to many interesting results. In this paper the various uses of such a mixed stone-timber masonry are shown in …
MATERIALS AND ARTISTIC TECHNIQUES OF THE FLEMISH WOODEN ALTAR FROM DEPOSITS OF ABATELLIS PALACE MUSEUM (PALERMO, ITALY)
2022
In the frame of the restoration intervention on a 16th century wooden altar performed by the experts of the Gallery of Art for the Sicilian Region ‘Palazzo Abatellis’, a deep scientific investigation of the artwork has been made by a scientific team in order to individuate the constitutive materials and techniques. The outcomes from the multi-analytical analyses supported the scheduling and monitoring of the conservation treatments and revealed the pictorial materials and underdrawing techniques typical of the artistic production for this typology of work of art widespread between the 15th and 16th centuries in central and northern Europe.
"Thermal penalty factors" accounting for site topological characteristics in pinch design of Heat Exchanger Networks
2010
Pinch analysis allows to determine targets and solutions for minimum energy requirements in process plants, basing on innovative tools like composite curves and table problem formulation, which ultimately allow generating an optimized heat exchanger network design. On another hand, this technique does not account directly for a number of factors which could play a primary role for the practical feasibility of the network. What if, for instance, once identified an optimal lay-out, we realize that some matches are hardly feasible in practice? Could we adapt the conventional pinch approach to keep into account site topological features since the preliminary design phase? In this paper the auth…
VELENI ED ALCHIMIE NEI MATERIALI DELL’EDILIZIA PRE INDUSTRIALE
2019
Since at least two decades, a renewed sensitivity to biocompatibility and the consequent diffusion of eco-certified building products have led to the attention of designers and operators on the issue of the healthness of construction materials. Although the application of strict protocols guarantees for new constructions very high levels of healthiness for both construction workers and users who come into direct contact with building materials and components, the issue for the characterization of potentially hazardous materials arises in many case for historical buildings. In addition to the well-known asbestos problem, there are new worrying signs deriving from the ascertainment in the inc…
Sintesi e studi SAR di nuovi derivati 4-NO- e (4-ONNCN)-pirazolici
2011
Shear and flexural strength of corroded R.C. beams
2016
Simplified equations aimed at evaluating the flexural and shear capacity of corroded R.C. beams are presented and discussed in this paper, with reference to ordinary beams reinforced both longitudinally (with same-size bars) and transversely (with stirrups). A model is developed to take care of diffused and localised corrosion (pitting corrosion), concrete decay in compression and bond-strength decay at concrete-reinforcement interface. A fairly innovative contribution of this study is the introduction into the proposed equations of the main parameters governing the corrosion processes. The proposed approach is simple and effective, and may be adopted in the assessment of many damaged struc…
Les plafonds voûtés des traités historiques aux applications en Sicile
2016
I controsoffitti lignei voltati - a partire dal XVII secolo e con notevole diffusione ed impiego nel XVIII secolo in tutta l’Europa - hanno qualificato sia edifici pubblici e privati di pregio che anche gran parte dell’edilizia di base, per le loro caratteristiche di indipendenza strutturale, leggerezza e di facile assemblaggio delle parti. Lo studio e la ricerca vogliono restituire memoria dei materiali costitutivi e delle tecniche costruttive impiegate nella realizzazione dei manufatti, per offrire un utile strumento di conoscenza agli studiosi ed ai tanti operatori del settore impegnati nell’intervento di recupero e/o restauro. C’est grâce à l’indépendance structurelle, à la légèreté et …
Are Red Lists really useful for plant conservation? The New Red List of the Italian Flora in the perspective of national conservation policies
2013
La nuova Lista Rossa della flora Italiana comprende tutte le "policy" specie italiane e altre specie di nota conservazione e comprende 400 taxa di cui il 65% sono minacciate di estinzione. La Lista Rossa si basa su un enorme data-set georeferenziato utile per gli scopi di conservazione. - The New Red List of the Italian Flora includes all the Italian policy species and other species of known conservation concerns for a total of 400 taxa, 65% of which are threatened with extinction. The Red List is based on a huge georeferenced data-set useful for conservation purposes. -