Confocal laser scanning microscopy investigation of bond interfaces involved in fiber glass post cementation

Objective: This confocal microscopy study evaluated the cement/dentin and cement/post interfaces along theroot canalwallswhenfiberglasspostswerebonded to dentin using different types of cements. Material & Methods: Thirty endodontically treated premolars were divided into 3 groups according to the adhesive materials used in the bonding procedure: Prime & Bond 2.1/Self Cure + Enforce, RelyX Unicem and RelyX Luting. Rhodamine B dye was incorporated in the luting materials for the cementation of the fiber glass posts (Exacto, Angelus) to dentin. Three transversal slices (apical, middle and coronal) were examined under confocal laser scanning microscopy. Statistical analysis was performed using the Kappa, Kruskal-Wallis and Dunnet tests, in a significance level of 5%. Results: The Prime & Bond 2.1/Self Cure + Enforce presented a uniform formation of tags in the dentin but gaps in the cement/dentin interface. The RelyX Unicem and RelyX Luting presented an adhesive interface with a fewer amount of gaps, but showed shorter tag formation than the Enforce system. All cements presented the same pattern of bubbles inside the cements. The RelyX Luting presented a greater amount of cracks inside the cement in comparison with the other cements in the coronal third, while no difference was observed between RelyX Unicem and Enforce. The RelyX Luting showed the lowest quantity of cement penetration into the post. Conclusion: In general, the quality of bonding interfaces of fiber posts luted to root canals was affected by both location and type of cement.

O desenho-estória na atenção psicológica a crianças na fase pré-cirurgica

The hospitalization process generates stress and, for a child who has already experienced a surgery can suffer from threatening, anxiety and distress. This search examines the experiences of children indicated for different craniofacial surgery which in many cases require more than esthetic or reconstructive surgery. It is quantitative and qualitative study, descriptive and comparative. The sample is intentional and it is made up of ten children, five boys and five girls in the pre-surgical Hospital for Rehabilitation of Craniofacial Anomalies HRAC-USP, Bauru-SP. As a tool for data collection, the design-themed story and data are used from subsequent survey developed by Walter Trinca. The results indicate that the design-themed story is suitable for the identification of the kid's childhood experiences in helping to deal with the stressful situation. Some of the children reveal their feelings of anxiety and fear and manifest other defenses such as denial. In all cases it identifies emotional states of concern such as anxiety and fear, or also denial of those feelings. It was concluded by the need of creating more favorable conditions in order to identify and address childhood experiences compared to surgery in a hospital environment, proposing the designthemed story technique that reveals those experiences. It emphasizes the relevance of psychological intervention in the hospital environment, considering childhood fantasies and feelings that generate or intensify emotional states of anxiety, fear and distress in pre-surgical level.

Renewable nanocomposite layer-by-layer assembled catalytic interfaces for biosensing applications

A novel, easily renewable nanocomposite interface based on layer-by-layer (LbL) assembled cationic/anionic layers of carbon nanotubes customized with biopolymers is reported. A simple approach is proposed to fabricate a nanoscale structure composed of alternating layers of oxidized multiwalled carbon nanotubes upon which is immobilized either the cationic enzyme organophosphorus hydrolase (OPH; MWNT−OPH) or the anionic DNA (MWNT−DNA). The presence of carbon nanotubes with large surface area, high aspect ratio and excellent conductivity provides reliable immobilization of enzyme at the interface and promotes better electron transfer rates. The oxidized MWNTs were characterized by thermogravimetric analysis and Raman spectroscopy. Fourier transform infrared spectroscopy showed the surface functionalization of the MWNTs and successful immobilization of OPH on the MWNTs. Scanning electron microscopy images revealed that MWNTs were shortened during sonication and that LbL of the MWNT/biopolymer conjugates resulted in a continuous surface with a layered structure. The catalytic activity of the biopolymer layers was characterized using absorption spectroscopy and electrochemical analysis. Experimental results show that this approach yields an easily fabricated catalytic multilayer with well-defined structures and properties for biosensing applications whose interface can be reactivated via a simple procedure. In addition, this approach results in a biosensor with excellent sensitivity, a reliable calibration profile, and stable electrochemical response.

Um estudo sobre o desenho aplicado ao design

Although technological development has created several tools and techniques of graphic representation, we highlight here the importance of the manual drawing abilities for the design creative process. Freehand drawing is used to facilitate the development of projects and show them more quickly and efficiently, and is an essential technique for any designer, regardless is informational, product or fashion designer.

O desenho como ferramenta projetual no design de moda

This article intends to allocate the different fashion drawing languages used in the development stages of fashion design. To do so, it is based on the methodological guidelines for fashion design presented by Montemezzo (2003). Initially, presents a bibliographic study about the types of fashion drawing languages. Then analyzes the specificities of each language and adjust them to the steps presented by the author cited.

O lugar do desenho no século XX: dimensões e conceito

The following work proposes an approach to drawing based upon a language which is diluted and also introduced in the hybridization perceived in the 21st Century. Based on a shift of languages in visual arts which refers to appropriations and to the expansion of possibilities for the procedure and the physicality of the artistic work, it looks into the place of drawing, its dimensions and concepts. While it is an expressive vehicle, the drawing constitutes an indispensable element for the development of expression forms, transformed and diversified over centuries. In the 21st Century, its plurality presents it in several dimensions. When it is expanded in the space, it not only makes sure that it not bi dimensional, as well as it is asserted in its essence, besides coded methods. The text is structured around theoretical and practical researches based on Ostrower, Derdyk, Canclini and author/artist.

O desenho na obra de Wim Wenders: 'Até o fim do mundo'

The present work is an investigation into the possibilities of development of drawing in the contemporaneity and the detachment which certain poetic art could have to the point of absorbing more than one language in the materialization of the idea as it meets the development of the individual approach from the producer's work.This reading is sought in the work of the filmmaker Wim Wenders, more specifically in his film "Until the End of the World" and the way it presents the images are due to the proximity of different artistic languages. While cropping, framing are part of the procedures present in the artist's creative process to meet the needs of its poetics.

Ergonomics and interfaces of traditional information systems: packaging

The contemporary world is characterized, among other factors, by the influence of the new computer information systems on the behavior of individuals. However, traditional information systems still have interaction problems with users. The aim of this study was to determine whether the interaction aspects between user versus traditional information systems (particularly the graphics) have been fully studied. To do so, the ergonomic aspects and usability of such systems were reviewed, with emphasis on the problems of visibility, legibility and readability. From that criteria, the evolution of ergonomic studies of information systems was reviewed (bibliometrics technique); and examples of ergonomic and usability problems in packaging were demonstrated (case study). The results confirm that traditional information systems still have problems of interaction between human X system, hindering the effective perception of information.

Concepções geométricas de percepção e representação da forma no desenho

A study on means of developing of perception and reading of the form by the conception and development of a Teaching Methodology of Drawing with emphasis in its early stages, its development and application in the initial stages of the Design process, dissecting it as a mental and physical process. We will be addressing the contributions of Geometry as a mean of simplification of the reading and materializing configurations as some pointers for addressing the Drawing teaching in the reported course.

Interfaces de notícias táteis em conteúdos gamificados contemporâneos

The construction methods of information lean on in variable models in the contemporary, especially by the diversity of languages and platforms offered. Among the innovations we find a growth of the gamification effect in the representation or reinforcement of the news, seizing the moment entertainment to increase user engagement. This research presents, from a case study published by The New York Times on the information complement referring to the World Cup Brazil 2014, studies of the importance of the interface in the broadcasting of informative contents, especially in a society where the tactile sensation is growing.

Desenho animado: contribuição moral e intelectual ao desenvolvimento infantil

O presente trabalho tem como objetivo identificar de que forma os desenhos animados contribuem na formação da criança na faixa etária de 3 à 7 anos. Adotando como referência os desenhos animados O Peixonauta e Meu Amigãozão, produzidos pela TVPinguim (Brasil) e por uma parceria entre a brasileira 2DLab e a canadense Breakthrough Animation respectivamente, pretende-se analisar de que modo as animações semeiam valores essenciais da sociedade ao mesmo tempo que cultiva o intelecto adaptando conhecimentos científicos à percepção infantil. Utilizando da abordagem qualitativa, e tendo como referencial a pesquisa bibliográfica, o presente estudo visa apresentar as animações definidas acima e desenvolver uma análise acerca de sua relação com o telespectador infantil

Imagens e histórias em arte terapia: experiências nas interfaces da psicologia, da educação e da arte

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)