1,721,012 research outputs found
Spazio sociale, identità e fruizione urbana. Il caso del Casilino 23, in STRAPPA G, Studi sulla periferia est di Roma, 2012 Franco Angeli
No full textSI tratta dei risultati di una ricerca sulla perfieria est di Roma condotta fra il 2010 e il 2011. Il case-study sul Casilino 23 aveva l'obiettivo di indagare il rapporto fra identità, spazio sociale e forme della fuizione urbana. I risultati mostrano significativi mutamenti nell'identità urbana di un quartiere periferico di Roma connessi a più ampi fenomeni di mutamento sociale inerenti il rapporto centro-periferia e le modifiche di struttura economico-sociale, culturali e intergerazionali che attraversano la società globale
Biomaterials in maxillofacial surgery: membranes and grafts
No full textToday, significant differences in the use of biomaterials (membranes and grafts) of animal or synthetic origin have yet to be reported. Nevertheless, some evidences suggest that synthetic materials have a lower risk of disease transmission. This review aims to assess the available informations on regenerative bone technique using reasorbable membranes and bone grafts. In particular, biocompatibility, immunological response, tissue reaction, reabsorption time and histological features of materials daily use in dentistry and in maxillofacial surgery were emphasized
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Piezoelectric surgery: Twenty years of use
No full textThe use of ultrasonic vibrations for the cutting of bone was first introduced two decades ago. Piezoelectric surgery is a minimally invasive technique that lessens the risk of damage to surrounding soft tissues and important structures such as nerves, vessels, and mucosa. It also reduces damage to osteocytes and permits good survival of bony cells during harvesting of bone. Piezoelectric surgery was first used by oral and maxillofacial surgeons for osteotomies, but recently some specific applications in neurosurgery and orthopaedics have been proposed. We review the different applications of piezoelectric surgery
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