1,720,970 research outputs found
State of the Art of Autologous Platelet Concentrates in Dentistry: A Narrative Review
No full textAim of the study Over the past 10 years, PRP and PRF have been widely used in dentistry, due to their growth factors and regenerative potentials and have expanded their use in many procedures with results that are now clinically and statistically significant. The initially described procedures included oral surgery, in general, from simple to complex extractions of included third molars. Today their use goes from periodontics to hard and soft tissue regenerative surgery, through oral wound healing up to implant therapy. The aim of this review is to evaluate the state of the art of autologous platelet concentrates in different branches of dentistry. Materials and methods A literature research was conducted through major scientific database without any restriction. Because of the large number of articles included and the wide range of methods and results among the studies found, itwas not possible to report the results in the form of a systematic review or meta-analysis. Therefore, a narrative review was conducted. Results We obtained 2236 results, of which 1621 were published in the last 10 years. After the screening of titles and abstracts, non- topic entries were excluded, 323 reviews and systematic reviews were included, of which 320 passed the English language filter. Conclusions This review highlights the present state of the art of the use of autologous platelet concentrates in dentistry. According to several recent studies, there is an effective benefit in several clinical outcomes described in using prp or prf in different procedures, while in others further clinical studies are needed
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
Geomorphological underwater surveys of geoarchaeological sites in Campania, southern Italy.
No full textSubmarine surveys carried out in Campania, particularly since the 90s along the coastaland of Sinuessa, allowed to draw up geomorphological maps with archaeological findings. Along the sea bottom, about 650 m off and -7 m depth, a Campanian Ignimbrite bedrock was detected: dated 39 kyr BP, its position is incompatible with the current sea level. Towards the northern edge of the shoal, a depressed area 3 m deep, with 24 cubic elements 3x3 m wide and in concrete (opus cementicium) was surveyed. At the top of the blocks were observed semicircular holes, used for lifting, transporting and juxtapostion operations: these artifacts (pilae) are typical of Roman maritime structures, as described by Vitruvius in De Architectura (80-15 BC). Pilae were widespread along the Phlegrean Fields coast for jetties and docks, as in Baiae and Portus Julius settlements. Beachrocks and accessory morphologies at the same depth as the leveled bedrock, suggest that the tuff bank was emerging and attended by man in Roman times, even for activities related to port facilities. The shoal is markedly dissected by submerged palaeo-channels, more or less deep, in alignment of current watercourses on the mainland. These palaeo-channels were modeled in subaerial environment during the Würm glaciation, following the tuff deposition: at that time the Mediterranean sea level lowered down to -120 m. The northernmost channel, sinuous and next to the pilae, is 3-4 m deep and from 60 to 350 m wide: this probably allowed transit and maneuvering of Roman ships
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
Geomorphological features of the marine area of Sinuessa in Campania, southern Italy.
Full text linkSubmarine surveys carried out since the 90s along the coastaland of Sinuessa, facing the town of Sessa
Aurunca, allowed to draw up a geomorphological map with archaeological findings. Along the sea
bottom, about 650 m off and -7 m depth, a Campanian Ignimbrite bedrock was detected: dated 39 kyr
BP, its position is incompatible with the current sea level. Towards the northern edge of the shoal, a
depressed area 3 m deep, with 24 cubic elements 3x3 m wide and in concrete (opus cementicium) was
surveyed. At the top of the blocks were observed semicircular holes, used for lifting, transporting and
juxtaposition operations: these artifacts (pilae) are typical of Roman maritime structures, as described
by Vitruvius in De Architectura (15 century BC). Pilae were widespread along the Phlegrean coast for
jetties and docks, as in Baiae and Portus Julius settlements. Beachrocks and accessory morphologies at
the same depth as the leveled bedrock suggest that this was emerging and was attended by man in
Roman times, even for activities related to port facilities. The shoal is markedly dissected by
submerged palaeo-channels, more or less deep, in alignment of current watercourses on the mainland.
These palaeo-channels were modeled in subaerial environment during the Würm glaciation, following
the tuff deposition: at that time the Mediterranean sea level lowered down to -120 m. The
northernmost channel, sinuous and next to the pilae, is 3-4 m deep and from 60 to 350 m wide: this
probably allowed transit and manoeuvring of Roman ships. The recovery of a large stump of lead
anchor, a hundred of Roman amphorae and their fragments confirm this finding. Probably the sinuous
physiography favoured the choice of this site for the docking of Sinuessa, as sheltered from storm
surges: also Strabo (Geographikon v.3.6) relates the term Sinuessa to a bay (sinus)
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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