1,721,026 research outputs found
Note sulla tradizione antica di Babrio 117
Full text linkThe article examines the Mythiambus 117 of Babrius, attested both by medieval manuscripts and by the ancient tabulae ceratae Assendelftianae of Palmyra. This study tries to revaluate the ancient tradition: at line 9 of the Mythiambus the word νύξας can thus be regarded as an ancient variant
Reducing the number of implants in the prosthetic rehabilitation of edentulous patients: Presentation of two cases
No full textMULTIDISCIPLINARY APPROACH IN THE MANAGEMENT OF COMPLEX CASES: IMPLANT-PROSTHETIC REHABILITATION OF A PERIODONTAL SMOKING PATIENT WITH PARTIAL EDENTULISM, MALOCCLUSION AND AESTHETIC PROBLEMS
No full textThe aim of this case report is to describe how the multidisciplinary approach is the best way to resolve the cases of complex prosthetic rehabilitation. In this report we described how to solve with fixed prostheses a smoker patient who presents active periodontitis, multiple edentulous areas, dental malocclusion (anterior open bite, tooth extrusion and rotation), and severe aesthetic problems (multiple diastema, tooth discoloration, gingival recession). The whole programming of this specific clinical case was performed in a team including a periodontist, an oral implant surgeon, an orthodontist and a prosthodontist: All together specialists have carefully examined the list of the problems and after consideration of the potential rehabilitation programs, together drew up the best suited for the patient
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
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Development of biodegradable membranes for the delivery of a bioactive chitosan-derivative on cartilage defects: A preliminary investigation
No full textBiodegradable membranes for cartilage applications were manufactured starting from polymeric networks of a lactose-modified chitosan (CTL), previously proposed for chondrocytes stimulation. This implantable biomaterial was conceived as a reservoir of a bioactive polymer that could promote the activity of chondrocytes and the healing of cartilage defects. Freeze-drying of reticulated hydrogels enabled to obtain pliable membranes with a homogeneous polymeric texture, as pointed out by scanning electron microscopy analyses. Swelling tests and dimensional evaluations showed that the material is able to absorb physiological fluids and expand gradually upon rehydration. This feature was evaluated on a simulated cartilage defect on pig's humerus (ex vivo), which revealed the capability of the membranes to progressively fit the tissue voids on the damaged cartilage. The rheological properties of the rehydrated membranes pointed out their peculiar strain-stiffening behavior, which represents a promising feature for the regeneration of tissues subjected to variable mechanical loads and deformations. Biological in vitro studies demonstrated the biocompatibility of the membranes in contact with primary chondrocytes and osteoblasts. Taken together, these results represent a starting point for the development of a novel generation of implantable biomaterials for cartilage treatment based on CTL
A hydrogel system based on a lactose-modified chitosan for viscosupplementation in osteoarthritis
Full text linkOsteoarthritis (OA) is a chronic disease affecting joint functionality and often managed with hyaluronic acid
(HA) administration. In this study, a hydrogel based on a lactose-modified chitosan (CTL) reticulated with boric
acid has been developed as a viscosupplement for OA treatment. The rheological characterization allowed to
identify a composition whose properties were in line with those of commercial products (in the order of tens of
Pascal). The selected CTL-hydrogel showed biocompatibility and antioxidant activity in vitro, and it did not
influence cytokines release by macrophages. Degradation studies carried out over 24 h pointed out its higher
resistance to chemical degradation with respect to HA samples.
Overall, this study underlines the advantages of the CTL-hydrogel to address the treatment of OA and shed
light on an innovative application of CTL polymer, which is one of the main component of the proposed hydrogel
system and not used in mixture with other molecules
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