Basics of digital photography in dermatology

Digital technology has promoted a great popularization of photographic registration in several medical areas. Because of its visual nature, dermatology has incorporated the benefits of this tool in clinical practice and research. This article aims to offer guidance to the dermatologist who is unfamiliar with this technology, providing basic understanding for the best use of digital photography equipment. ©2006 by Anais Brasileiros de Dermatologia.

Photoelastic comparison of single tooth implant-abutment-bone of platform switching vs conventional implant designs

Objectives: The maintenance and stability of peri-implantar soft tissue seem to be related to the crestal bone around the implant platform and different implant designs connections might affect this phenomenon. The aim of this study was to evaluate by photoelastic analysis the stress distribution in the cervical and apical site of implant-abutment interface of conventional implant joints (external hex, internal hex and cone morse) and compare to the novel platform switching design. Materials and methods: It was fabricated photoelastic models using five different implant-abutment connection, one set of external hex (Alvim Ti, Neodent, Curitiba, Brazil), one set of internal hex (Full Osseotite, Biomet 3i, Florida, USA), one cone morse set (Alvim CM, Neodent, Curitiba, Brazil), and two sets of internal hex plus platform switching concept (Alvim II Plus, Neodent, Curitiba, Brazil) (Certain Prevail, Biomet 3i, Florida, USA). These models were submitted to two compressive loads, axial from 20 kgf (load I) and another (load II), inclined 45° from 10 kgf. During the qualitative analysis, digital pictures were taken from a polariscope, for each load situation. For the quantitative analyses in both situations of load, the medium, minimum and maximum in MPa values of shear strain were determined in the cervical and apical site. The Kruskal-Wallis test was used to compare the results between the different systems and between cervical and apical site were compared using Mann-Whitney U test. Results: The results from qualitative analysis showed less concentration of strain in the cervical area to the internal hex plus platform switching (Certain Prevail), in both situation of load. The same results were get in the quantitative analysis, showing less stress concentrations around the implant Certain Prevail with internal hex plus the novel design (17.9 MPa to load I and 29.5 MPa to load II), however, without statistical significant difference between the systems. Conclusion: The minor stress concentration strongly suggest the use of platform switching design as a manner to prevent bone loss around the implant-abutment platform. Clinical Significance: From the result of this study its possible to make clinical decision for implant system which provides implant components with platform switching characteristics.

Creative commons: A convergence model between the ideal of commons and the possibilities of creation in contemporary times, opposed to copyright impediments

The contemporary individual finds on the Internet and especially on the Web facilitating conditions to build a basic infrastructure based on the concept of commons. He also finds favorable conditions which allow him to collaborate and share resources for the creation, use, reuse, access and dissemination of information. However, he also faces obstacles such as Copyright (Law 9610/98 in Brazil). An alternative is Creative Commons which not only allows the elaboration, use and dissemination of information under legal conditions but also function as a facilitator for the development of informational commons. This paper deals with this scenario.

Contemporary protectionism and the exports of developing countries

Includes bibliography

Colagem nos meios imagéticos contemporâneos

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

A documentação nas práticas artísticas dos grupos Arte/Ação e 3Nós3

Pós-graduação em Artes - IA

Paisagem híbrida: a reprodutibilidade da imagem na arte contemporânea

Pós-graduação em Artes - IA

O design gráfico e as mensagens socioambientais: a fotografia como linguagem no discurso do Greenpeace Brasil

Pós-graduação em Design - FAAC

Industrialization in Latin America: from the black box" to the "empty box": a comparison of contemporary industrialization patterns"

Includes bibliography

Education and development in the English-speaking Caribbean: a contemporary survey

Includes bibliography

Cenas e cenários das questões socioambientais: mediações pela fotografia

Os temas socioambientais têm se consolidado importantes fontes de investigação de estudiosos das mais variadas áreas. Por sua vez, as questões socioambientais se constituem foco de preocupação constante da contemporaneidade, inclusive para o ensino de Ciências. Ademais, o ensino de Ciências tem se pautado na disposição de contribuir para uma percepção mais adequada dos problemas socioambientais, além de favorecer a formação de um cidadão crítico e autônomo, capaz de compreender a complexidade do mundo natural e social, aproximando estes dois campos. Nesse contexto, buscamos apreender as leituras dos alunos de Licenciatura (Biologia e Física) sobre questões socioambientais vigentes na região metropolitana de Belém, a partir da fotografia, e suas possibilidades de uso no ensino de Ciências na percepção desses alunos. Optamos pela abordagem qualitativa e como estratégia metodológica, utilizamos a pesquisa-ação. A pesquisa ocorreu durante a realização da oficina “A Fotografia no Ensino de Ciências”, estratégia de recolha de dados, no período de seis dias, junto a 10 alunos. A fotografia configura-se como instrumento facilitador da apreensão dos aspectos sociais, econômicos, ambientais, políticos, educacionais, entre outros, que permeiam a leitura do ambiente, ou seja, favorece leituras ampliadas (multidimensionais) do contexto socioambiental evidenciado/vivido. Os dados relativos aos conhecimentos, aos entendimentos e as interpretações, entre outros aspectos, dos alunos, foram organizados e analisados mediante análise textual discursiva. Escolhemos produzir metatextos referentes à apreensão das questões socioambientais, a partir da análise dos textos das fotografias. Ao se lançarem na busca das questões atinentes aos problemas socioambientais, os discentes “(re)direcionaram” a presente pesquisa, ou seja, em nossa avaliação alcançou um nível “para além do esperado”, do trivial; em sua edificação, o corriqueiro estagnou-se. Isto porque, durante as construções analíticas dos alunos, observamos a extrapolação dessas questões, para outros campos do conhecimento (social, econômico, entre outros).

Creative Commons: a convergence model between the ideal of commons and the possibilities of creation in contemporary times, opposed to copyright impediments

The contemporary individual finds on the Internet and especially on the Web facilitating conditions to build a basic infrastructure based on the concept of commons. He also finds favorable conditions which allow him to collaborate and share resources for the creation, use, reuse, access and dissemination of information. However, he also faces obstacles such as Copyright (Law 9610/98 in Brazil). An alternative is Creative Commons which not only allows the elaboration, use and dissemination of information under legal conditions but also function as a facilitator for the development of informational commons. This paper deals with this scenario.