2,134 research outputs found
In vivo evaluation of gingival tissue reaction to composite resin restoration - a pilot study
No full textComposite cements are extensively used to treat crown and dental neck defect. One of the most important problem to know the successful usability of these materials almost in the coronal part of dental root. No information exists about the behavior of human gingival tissue close to these kind of materials. This study analyzes the reaction of the human gingival to composite build up performed in the dental neck area and the coronal part of the dental root. In 8 healthy patients with almost one tooth jeopardized at the neck/root zone and requiring endodontic detoxification therapy, and after crown lengthening surgical procedure to restore the physiological length of the biological space, composite build up (Esthet. X®) was necessary to ensure marginal tissue stability and secure dental dam apposition. During the crown lengthening, 3 months after the Esthet.X® build up, the econdary flap was harvested, fixed in buffered 4% paraformaldeyde, ethanol dehydrated and methyl methacrylate embedded. Three micron section were obtained from biopsies and the intensity of inflammation was evaluated after Gomori trichrome or hematoxilyn-eosin stain using a grade scale. The corion showed an uneven distribution of inflammatory cells, both in gingival close to the Esthet. X® restored portion and the tooth hard tissues. The inflammation grade varied from severe to weak. The statistical analysis performed using the Mann-Whitney test did not show any significant difference in the gingival tissue close to the restoration or hard tissue surface. Within the limitations of this pilot study, the results seem to indicate that use of this kind of composite does not so much greatly alter the gingival tissue, as the patient’s lifestyle or dental hygiene
"The love that made hell, paradise." Ouida re-writing the Paolo and Francesca theme in Held in Bondage
No full textThe bestselling Victorian author Ouida reveals in her novels, and, in particular, Held in Bondage, an extraordinary knowledge od Dante, by using characters and themes from the Commedia. The Paolo and Francesca theme actually constitutes part of the plot of the novel and is to be found in many of her other works, short stories and non-fiction writing
HERStory Makers 2023: Francesca Fotheringham
No full textFrancesca Fotheringham is a postdoctoral research associate at the University of Edinburgh studying educational psychology with a focus on neurodiversity. She took part in HERStory Makers 2023.What is HERStory Makers?HERStory Makers is a social media competition for female-identifying early career researchers to share their research, their career journeys, and to inspire the next generation. Winners are selected by public vote. HERStory Makers is also part of EXPLORATHON, Scotland's contribution to European Researchers' Night.In 2022-23, EXPLORATHON Francescasupported by the Engineering & Physical Sciences Research Council [grant number EP/X020762/1].Author contributions to contentFrancesca conceived, planned, and recorded the video content. Kirsty Ross edited the video content to insert HERStory Maker credits, added subtitles, and reduce video length to below Twitter/X limit of 2 mins and 20 secs.</p
SEM AND PROFILOMETRIC ANALYSES OF SMOOTH SURFACES OF TITANIUM IMPLANTS CLEANED WITH 3 INSTRUMENTATIONS
No full textDental implants require regular maintenance of smooth surfaces. It’s crucial that the instrument used for clinic maintenance be able to remove ecosystems without causing damage to the implant surface. Several instrumentation may be useful for this maintenance, but studies of their effect are actually inconclusive. This study compares the effect of cleaning treatment of titanium implants using low-vacuum scanning electron microscopy (LV-SEM) and white-light confocal (WLC) profilometry to analyze curved surfaces. One sector of each titanium implants screwed to their abutments was left unprocessed (Us) or cleaned for 60 seconds, to simulate a single cleaning session, or for 180 seconds to simulate a series of sessions. Three types of instrumentation were randomly used on 60 implants: (Sc) stainless-steel Gracey curette; (Tc) titanium Langer
curette; and (Pu) an ultrasonic device with the probe covered with a plastic tip. The morphology of the implant surfaces was analyzed by LV-SEM, without metal sputtering. Quantitative evaluations of the roughness of surfaces were then performed using a WLC-profilometer. The Kruskal-Wallis followed by the Dunn multiple comparison test were used in statistical comparisons. The unprocessed surfaces showed the presence of thin transverse ridges and grooves, i.e. a polarized surface roughness, being substantially compromised after Sc instrumentation. Small surface alterations, increasing with time, were also recorded after Tc and Pu instrumentation, lthough
to a lesser degree. The gap of the fixture-abutment connection appeared almost completely clean after Tc, clotted with titanium debris after Sc, and with plastic debris after Pu treatment. The mean roughness (Ra) was nchanged after Pu, increased after Sc and decreased after Tc treatment, when compared with Us, but without statistical significance. The Rz roughness parameter, calculated along the fixture X-axis, was significantly greater after Sc treatment when compared with Us, Tc and Pu, whereas the differences between Tc, Pu and Us were not significant. All Rz roughness parameters of Sc, Tc and Pu, calculated along the fixture Y-axis, resulted almost identical and significantly lower than that of Us. Within the limitations of this study, a careful use of a titanium curette could produce a slight smooth surface alteration, particularly over prolonged treatments and may be more beneficial than the other treatments examined for stable ecosystem removal
The maintenance of inserted titanium implants: in-vitro evaluation of exposed surfaces cleaned with three different instruments
No full textObjective: Changes to titanium implants smooth-surfaces after instrumentation were comparatively analyzed using low-vacuum scanning electron microscopy (LV-SEM) and white-light confocal (WLC) profilometry, to accurately evaluate curved surfaces. Material and methods: Sixty titanium implants screwed to their abutments were randomly split into three groups for cleaning treatment with (S) stainless-steel Gracey-curettes, (T) titanium Langer-curettes, and (P) an ultrasonic-device with the probe covered with a plastic-tip. One sector of each implant was left unprocessed (U). The other sectors were cleaned for either 60 s, to simulate a single cleaning session, or 180 s to simulate a series of sessions. Surface morphology was analyzed by LV-SEM, without metal sputtering. Quantitative evaluations of the roughness of surfaces were performed using a WLC-profilometer. The Wilcoxon and the Mann-Whitney tests were used in statistical comparisons. Results: U-surfaces showed that thin transverse ridges and grooves, i.e. a polarized surface roughness was substantially compromised after S-instrumentation. Small surface alterations, increasing with time, were also recorded after T-·and·P-instrumentation, although to a lesser degree. The gap of the fixture-abutment connection appeared almost completely clean after T-, clotted with titanium debris after S-, and clotted with plastic debris after P-treatment. The mean roughness (Ra) was unchanged after P-, significantly increased after S- and decreased after T-treatment, when compared with U. The Rz roughness-parameter, calculated along the fixture Y-axis, of S, T, and P resulted similar and significantly lower than that of U. Rz (X-axis) resulted unchanged after P-, slightly increased (+40%) after T-, and greatly increased (+260%) after S-treatment, this latter being statistically significant when compared with U. Conclusions: The careful use of titanium-curettes could produce only minimal smooth surface alteration particularly over prolonged treatments, and avoid debris production that could endanger implant preservation
Medicina illuminata. La Biblioteca Lancisiana di Roma
No full textL'articolo presenta i codici miniati della Biblioteca Lancisiana di Roma. La prima parte, del coautore, è dedicata alla Biblioteca. La seconda parte, di F. Manzari, tratta dei manoscritti miniati, costituiti da due codici con le opere di Avicenna e dal Liber fraternitatis della Confraternita dell'Ospedale di Santo Spirito in Sassia a Roma.The article introduces the illuminated manuscripts of the Biblioteca Lancisiana in Rome. The first part of the article, by the co-author, is dedicated to the Library. The second part, by Francesca Manzari, illustrates the manuscipts; these are two manuscripts with the works of Avicenna and the Liber fraternitatis of the Confraternity of the Hospital of Santo Spirito in Sassia in Rome
A DH-Leavened Musicological Toolbox
No full textGraduate-level training in music research methodologies tends to ignore digital humanities work and overlook the use of digital tools created in support of new forms of reading. Training instead focuses on source material in the student’s area of interest. This material includes secondary and primary (archival) resources, as well as information resources, such as: monuments of music and critical editions; indexes; bibliographies and thematic catalogs; dictionaries and encyclopedias; digital libraries of scores or editions; and databases of period-specific newspapers or journals. Graduate students taking research methods courses already have a toolbox built from their experiences as musicians and students of music, including the ability to read and interpret music notation, to understand theoretical and analytical concepts in music, as well as a command of music history, including the canon of musical works.
Digital humanities has become a major area of academic endeavor at the “interface of technological development, epistemological change and methodological concerns." An important characteristic of digital humanities research has been its interdisciplinarity. We argue that graduate training in musicology needs to include coverage of methodologies applied by digital humanists in support of new forms of reading, not only to broaden the canon of research topics in musicology, but also to build common ground with researchers of other disciplines. We propose that librarians are well positioned to provide this expertise and training
A Twitter Case Study for Assessing Digital Sound
No full textAcademic and cultural heritage institutions around the world have made measurable strides in the development of digital sound archives oriented towards research and access, but their impact on scholarship and society has been little studied. Traditionally, impact has been measured by citations; yet these are problematic metrics for non-traditional outputs like sound recordings. Social media data provide a promising avenue of investigation for measuring scholarly as well as societal impact. Twitter in particular has been shown to provide a high number of references for cultural and research outputs in all disciplines. This study analyzes Twitter references pertaining to the collections of five digital sound archives: British Library Sounds, Europeana Sounds, the Internet Archive Audio Archive, PennSound and UbuWeb. Using text analysis methods to identify high frequency events and trends, and labeling them with a rubric designed for measuring the impact of digital heritage resources, this study provides preliminary insights on user values as they relate to digital sound collections. Despite the limitations of using social media data, the evidence gathered in this case study characterizes aspects of the use of digital sound collections, and may point to future priorities for the digital preservation of sound.Peer reviewe
Against the Grain: Reading for the Challenges of Collaborative DH Pedagogy
No full textThis article provides a critical review of the past five years of literature in digital humanities pedagogy and faculty-librarian collaboration, commingled with reflections on personal practice, which extend findings from the literature. Faculty-librarian partnerships in DH pedagogy reflect a rapidly evolving area of engagement calling for expertise in teaching, subject knowledge, scholarly communication, digital technologies, and DH research methodologies. Although there is a rapidly expanding body of literature on these partnerships, the challenges of the work tend to be minimized. This article expands upon commonly encountered difficulties, and it points to potential solutions and best practices.Peer reviewe
SoundCloud
No full textCan't get a clear policy on OA from Notes. Hoping an AM is okay. I can email Notes staff, if helpful
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