Ability of new obturation materials to improve the seal of the root canal system: A review

http://www.septodont.ca/sites/default/files/Abstract%20JOE%20Oct%202011%20Acroseal.pdf

Physical Properties and Interfacial Adaptation of Three Epoxy Resin–based Sealers

Pulp‐dentin Biology in Restorative Dentistry

Objective The aim of this study was to evaluate the influence of apical foramen widening on the healing of chronic periapical lesions in dogs' teeth after root canal filling with Sealer 26 or Endomethasone. Study design Forty root canals of dogs' teeth were used. After pulp extirpation, the canals were exposed to the oral cavity for 180 days for induction of periapical lesions, and then instrumented up to a size 55 K-file at the apical cemental barrier. In 20 roots, the cemental canal was penetrated and widened up to a size 25 K-file; in the other 20 roots, the cemental canal was preserved (no apical foramen widening). All canals received a calcium hydroxide intracanal dressing for 21 days and were filled with gutta-percha and 1 of the 2 sealers: group 1: Sealer 26/apical foramen widening; group 2: Sealer 26/no apical foramen widening; group 3: Endomethasone/apical foramen widening; group 4: Endomethasone/no apical foramen widening. The animals were killed after 180 days, and serial histologic sections from the roots were prepared for histomorphologic analysis. Scores were assigned according to preestablished histomorphologic parameters and analyzed statistically by Kruskal-Wallis and Mann-Whitney U tests. Results Regarding new cementum formation, repair of cementum and bone resorption areas, presence of microorganisms, inflammatory cell infiltrate and periodontal ligament conditions, significantly better periapical healing was obtained when foramen widening was done and Sealer 26 was used. Conclusion Apical foramen widening and calcium hydroxide–containing sealer were more favorable to the healing of chronic periapical lesions.

Influence of apical foramen widening and sealer on the healing of chronic periapical lesions induced in dogs' teeth.

In the Pacific Ocean, air and ocean temperatures, atmospheric carbon dioxide, landings of anchovies and sardines, and the productivity of coastal and open ocean ecosystems have varied over periods of about 50 years. In the mid-1970s, the Pacific changed from a cool “anchovy regime” to a warm “sardine regime.” A shift back to an anchovy regime occurred in the middle to late 1990s. These large-scale, naturally occurring variations must be taken into account when considering human-induced climate change and the management of ocean living resources.

From Anchovies to Sardines and Back—Multidecadal Change in the Pacific Ocean

A constante producao de documento digitais no âmbito da Arquivistica ocasionou um processo de revisao teorico-pratico. Como consequencia, alem de custodiar documentos analogicos, os arquivos passaram tambem, a custodiar documentos digitais. No entanto a sua preservacao e dotada de complexidades tecnologicas e especificidades arquivisticas, e para sanar tais necessidades, tem-se discutido a implementacao de politicas, estrategias e repositorios digitais em conformidade com o modelo Open Archival Information System (OAIS). Para fins deste estudo, aborda-se o modelo logico da informacao arquivada, proposto pelo OAIS, com o objetivo de identificar e apontar convergencias com a Arquivistica. A metodologia consiste no levantamento bibliografico composto por livros, publicacoes tecnicas e artigos cientificos, caracteriza-se assim, como um artigo de revisao assistematica. Como resultado, observaram-se convergencias entre a Arquivistica e o modelo logico da informacao arquivada presente no OAIS em relacao a organicidade, proveniencia, custodia e acesso. Dentre os principais apontamentos, ressalta-se a pertinencia do modelo logico da informacao arquivada, o qual proporciona confiabilidade aos documentos arquivisticos custodiados, e assim reforca a possibilidade de implementar repositorios arquivisticos digitais confiaveis, em conformidade com o OAIS.

/pdf/modelo-logico-da-informacao-arquivada-no-open-archival-2gfew7xmrj.pdf

MODELO LÓGICO DA INFORMAÇÃO ARQUIVADA NO OPEN ARCHIVAL INFORMATION SYSTEM: uma reflexão arquivística

Objective: analyze the functional entities of the Open Archival Information System (OAIS), and point out convergences with Archival science, with a view to implementing a Trustworthy Digital Archival Repository (TDAR). Methodology: review article is no systematic/narrative, based on a bibliographic survey of previously published materials, consisting of books, technical standards, and scientific articles retrieved by the Google Scholar tool and by the Information Science Database. Results: the functional model proposed by OAIS allows receiving, managing, and disseminating digital archival records. Its information flows are registered and guarantee the maintenance of authenticity in the face of actions carried out within the scope of the TDAR, such as migrations and additions of information necessary for preservation. This functional model addresses essential issues such as negotiating purchases, transfers, and collections with producers and custodians, in addition to managing access demands of consumers. Conclusions: the OAIS functional model makes it possible to properly receive the records, add necessary descriptive information, securely store records, manage preservation policies and facilitate dissemination to the designated community. Moreover, the OAIS model can be incorporated into the archives system, and be the basis for implementing the TDAR, thus, protecting the custody and guaranteeing continuous access to authentic digital records in the long term.

Open Archival Information System: análise do modelo funcional no contexto da Arquivística

The purpose of the study was to evaluate microleakage if the conventional amalgam filling along with two different dentina adhesives available commercially, is more effective than when these adhesives are not used. The design of the study was experimental in vitro. The obtained results show that the adhesive amalgam restoration turned out to be more effective as far as the degree of reduction of the microleakage, when was compared with the conventional amalgam restoration.

https://www.medigraphic.com/pdfs/adm/od-2005/od052h.pdf

Comparación de la microfiltración utilizando dos técnicas de obturación con amalgama en molares temporales. Estudio in vitro

Understanding the digital humanities as a transdisciplinary territory that aims at the dissemination, circulation, valuation and preservation of knowledge and research, as well as free access to its data and metadata through tools and possibilities that technology and the digital environment provide and identifying the Information Science as an interdisciplinary field that studies the information, its flows and processes, from the origins to its transformation into knowledge, one perceives an evident area of intersection between both. However, on what bases is this relationship being constituted? The general objective of this article is to identify the scientific production on Digital Humanities in the scope of Information Science in the Brazilian periodicals of the area. The research will be exploratory in a qualitative-quantitative approach, starting with a literature review in Information Science and Digital Humanities that will provide a comparative conceptual analysis between the two areas in question. Next, we will identify the periodicals of Information Science in Brazil and the articles published between 2011 (date of publication of the Manifesto of the Digital Humanities) and 2018, where the term "digital humanities" appears in the title of the article, in the keywords and / or in the abstract. After the identification of the articles, an analysis of the authors and abstracts will be made. This research is expected to understand the relationship between information science and the digital humanities, measuring the scientific production of the first and second, knowing their actors and origins and analyzing this relationship. Keywords: Information Science; Digital Humanities; Periodical; Scientific Article.

Ciência da informação e humanidades digitais: diálogos possíveis de uma relação em desenvolvimento – artigos científicos no Brasil

Electric vehicles have stood out as a solution to the growing emission of polluting gases into the atmosphere in recent years. However, they still suffer from some factors that reduce implantation viability, such as battery autonomy. In this respect, several strategies are developed to increase the maximum distance traveled by the vehicle, one of which is regenerative braking. This paper studies the impacts of regenerative braking on the battery of a competition electric vehicle using a Simulink model, and results in an increase in the battery state of charge of 3% at the end of the simulation.

Daniel Flores

Papers

MODELO LÓGICO DA INFORMAÇÃO ARQUIVADA NO OPEN ARCHIVAL INFORMATION SYSTEM: uma reflexão arquivística

Open Archival Information System: análise do modelo funcional no contexto da Arquivística

Comparación de la microfiltración utilizando dos técnicas de obturación con amalgama en molares temporales. Estudio in vitro

Ciência da informação e humanidades digitais: diálogos possíveis de uma relação em desenvolvimento – artigos científicos no Brasil

Modeling the dynamic behavior of an electric vehicle considering regenerative braking