1,720,961 research outputs found
Effect of Different Glass Shapes and Size on the Time Course of Dissolved Oxygen in Wines during Simulated Tasting
Full text linkThe different shapes and sizes of wine glass are claimed to balance the different wine
aromas in the headspace, enhancing the olfactory perception and providing an adequate level of
oxygenation. Although the measurement of dissolved oxygen in winemaking has recently received
much focus, the role of oxygen in wine tasting needs to be further disclosed. This preliminary study
aims to explore, for the first time, the effect of swirling glasses of different shapes and sizes on the
oxygen content of wine. Experimental trials were designed to simulate real wine tasting conditions.
The O2 content after glass swirling was affected to a considerable extent by both the type of wine
and the glass shape. A lack of correlation between the shape parameters of five glasses and the O2
content in wine was found which suggests that the nonequilibrium condition can occur during wine
tasting. The International Standard Organisation (ISO) glass—considered to be optimal for the wine
tasting—allowed less wine oxygenation than any other glass shapes; and the apparent superiority of
the ISO glass is tentatively attributed to the more stable oxygen content with time; i.e., less variability
in oxygen content than any other glass shape
The top 100 most-cited articles in dentistry by authors with Italian affiliation
No full textIntroduction: Analyzing highly-cited articles can provide a retrospective assessment of research evolution and predict future developments. The aim of this study was to carry out a bibliometric analysis of the 100 most-cited articles in dentistry by authors with an Italian affiliation.
Evidence acquisition: All the articles published in journals indexed under the Scopus category "Dentistry" and with at least one author affiliated to any Italian institution were searched in September 2022. The 100 most-cited articles were selected and relevant data were extracted and summarized. The analysis of co-authorship at country level and co-occurrence of keywords was carried out.
Evidence synthesis: The 100 most-cited articles were published between 1976 and 2020. The number of citations ranged from 235 to 1683, with a mean of 361. The series included 25 citation classics (>400 citations). The majority of articles were classified as expert opinion/narrative reviews (N.=47). Almost half of the articles refer to three predominant disciplines which were implantology, periodontology and restorative dentistry. Only two articles were single-authored. In 30 articles, all the authors had an Italian affiliation and the US was the most frequent country for non-Italian authors. Only one article was published in journals owned by a non-Italian publisher.
Conclusions: The present series of highly-cited articles confirms the important role of Italy in dental research. We found an absence of correlation between the level of evidence and the number of citations and a non-homogeneous distribution of highly-cited papers in the different dental disciplines. The majority of articles included in the series shared international co-authorship and were published in high-impact journals
Subgingival Zone Detection via Reverse Subgingival Scan
No full textAn important issue with digital impression techniques is the difficulty in replicating the subgingival zone, particularly when abutments are prepared with a vertical finish line. We propose a novel procedure, the reverse subgingival scan (RSS), to depict the subgingival area via digital impression without a retraction cord or the distortion of the sulcus. The software workflow, beginning with a digital dental impression, was performed using Exocad® (Align Technology) and Meshmixer® (Autodesk). The approach is based on the direct alignment of the surface of abutments, which is used as a reference point. The efficacy of the RSS approach was confirmed via fit tests, radiographic control assessments, and evaluations of the rate of tissue compression of the final prosthetic restoration, so long as the provisional had a perfect fit. RSS yields information on the transversal dimension and depth of the gingival sulcus. The procedure depends on the quality and characteristics of the provisional restoration, and is suitable only for cases in which the finish line of the final crown is at the same level or more coronal than that of the provisional
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
Impact of digital dentistry on clinical practice, research and education
No full textIn recent years, digital workflows and technologies have revolutionized clinical practice, research and education. The term “Digital Dentistry” encompasses digital imaging, intraoral scanners, computer-aided design/computer-aided manufacturing workflows and three-dimensional (3D) printing technologies. Therefore, underscoring the profound impact of digital dentistry on the dental field, this thesis focused on various subjects.
3D printing technologies were investigated for educational purposes, with the aim to create patient-specific training models. A systematic revision was conducted on this topic, and two workflows were defined to obtain patient-specific models from radiological images.
Intraoral scanners were thoroughly analyzed, assessing their accuracy in implant-prosthetic treatments and searching for predictable errors. Furthermore, an innovative technique called 'Reverse Subgingival Scan' was introduced to improve accuracy in fixed prosthodontics.
The accuracy of 3D printed surgical guides, widely used in implant surgery, was explored analyzing different 3D printing technologies and guide sizes.
In conclusion, the research focused on the development of 3D-printed scaffolds that can address bone defects and tissue engineering in oral surgery
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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