Reparo ósseo dedefeitos de tamanho crítico tratados com aspirado de medula óssea associado ou não a terapia com laser em baixa intensidade: estudo imunoistoquímico em calvárias de ratos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Usabilidade: um fator crítico para da interatividade da televisão digital

Este artigo tem por objetivo fazer uma reflexão da usabilidade aplicada à interatividade do SBTVD (Sistema Brasileiro de Televisão Digital). Aborda as perspectivas de mercado no Brasil e na América Latina e cita alguns casos em que a usabilidade constituiu-se em fator decisivo para ampliar o ciclo de vida do produto. Explicita a interação e a engenharia de usabilidade com destaque para a garantia da consolidação da interatividade do SBTVD. Neste contexto, inclui o estabelecimento de redes de banda larga para todos, chamados de “cidade digital” condição decisiva no processo de possibilitar a democratização. Conclui que essa facilidade de usabilidade, aliada aos avanços tecnológicos digitais que propiciam uma qualidade e uma convergência tecnológica, que certamente romperá o modelo de telespectador passivo para um telespectador interativo gerando um novo contingente de telespectadores vindo da televisão digital e da televisão analógica.

Uma perspectiva crítico-dialética das pedagogia do aprender a aprende e o uso da tecnologia como facilitador na educação: revisitando as políticas educacionais

This article proposes an analysis of two interrelated contemporary phenomenon, which are - the pedagogy of "learning to learn" and the resources used as learning facilitators. Both are considered as strategic instruments to current educational policy, being referenced and quoted in national and international documents. For sake of them, methodological changes occurred in learning: teaching got to be outside the classroom, the learning mediator instrument stopped to focus on the figure of the teacher, new methods of teaching were invented and the students get a quickly practical and accurate access to the information. However, from a critical-and-dialectical perspective, this study aims to raise questions about these changes and understand through the concept of mediation, the role of the educational practice, especially at school, currently are taking place in our society.

Influência do diâmetro foraminal do canal radicular, do tipo e da penetração de agulha, e do fluxo da solução irrigadora na limpeza e na extrusão apical

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Gestão democrática, educação e cidadania: um olhar crítico a partir de fontes bibliográficas

Pós-graduação em Educação Escolar - FCLAR

Estrutura genética de populações de Rhizoctonia oryzae-sativae do arroz em São Paulo, Brasil, e em meta, Colômbia, e potencial adaptativo do patógeno à Urochloa spp

Pós-graduação em Agronomia - FEIS

A mediação em projetos de incentivo à leitura: a apropriação da informação para construção do conhecimento e do pensamento crítico

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Técnicas de parametrização para o fluxo de carga continuado desenvolvidas a partir da análise das trajetórias de soluções do fluxo de carga

Pós-graduação em Engenharia Elétrica - FEIS

Fluxo e tecnologias de informação no contexto brasileiro de inventário de ciclo de vida

Pós-graduação em Ciência da Informação - FFC

Estudo histomorfométrico do processo de cicatrização óssea em defeitos cirúrgicos de camanho crítico em calvárias de ratos preenchidos com polímero de mamona

Objectives: The aim of this study was to evaluate the behavior of the polymer histomorphometrically castor during the healing process of defects of critical size calvarial preparations in rats. Materials and Methods: Twenty animals underwent a surgical procedure that was to be held in the calvaria of each animal a critical defect of 8 mm in diameter with a drill trephine. The rats were divided into two groups according to the following procedures: group C received no treatment and the bone defect site was filled with blood clot, group M, the bone defect was filled with castor oil polymer particles. The animals were sacrificed 180 days after the surgical procedures. After routine laboratory procedures the specimens were subjected to analysis histomorphometric. Results: In groups C the newly formed bone tissue was well developed, with adjacent areas of osteoid matrix rich in osteoblasts, and restricted to the vicinity of the edges of the defect. In animals of group M was observed newly formed lamellar bone tissue restricted to the vicinity of the defect edges and particles of polymer Castor distributed throughout the defect. There was a higher percentage of newly formed bone area was statistically significant in group C compared to animals in group M. Conclusions: Within the limits of this study can conclude that the castor oil polymer is biocompatible and had kept the area during the healing of critical size defects in surgically prepared rat calvariae.

Estudo histomorfométrico do processo de cicatrização óssea em defeitos cirúrgicos de tamanho crítico em calvárias de ratos preenchidos com polímero de mamona

Objectives: The aim of this study was to evaluate the behavior of the polymer histomorphometrically castor during the healing process of defects of critical size calvarial preparations in rats. Materials and Methods: Twenty animals underwent a surgical procedure that was to be held in the calvaria of each animal a critical defect of 8 mm in diameter with a drill trephine. The rats were divided into two groups according to the following procedures: group C received no treatment and the bone defect site was filled with blood clot, group M, the bone defect was filled with castor oil polymer particles. The animals were sacrificed 180 days after the surgical procedures. After routine laboratory procedures the specimens were subjected to analysis histomorphometric. Results: In groups C the newly formed bone tissue was well developed, with adjacent areas of osteoid matrix rich in osteoblasts, and restricted to the vicinity of the edges of the defect. In animals of group M was observed newly formed lamellar bone tissue restricted to the vicinity of the defect edges and particles of polymer Castor distributed throughout the defect. There was a higher percentage of newly formed bone area was statistically significant in group C compared to animals in group M. Conclusions: Within the limits of this study can conclude that the castor oil polymer is biocompatible and had kept the area during the healing of critical size defects in surgically prepared rat calvariae

A proporção de plasma rico em plaquetas/enxerto ósseo autógeno pode influenciar o reparo ósseo de defeito de tamanho crítico: estudo radiográfico em calvária de ratos

Introduction: It has been suggested that bone grafts combined with platelet rich plasma (PRP) present greater density than bone grafts without PRP after healing process. However, this result may depend on proportion PRP/autogenous bone (AB) graft used. Objective: The purpose of this study was to analyze radiographically the influence of the proportion PRP/particulate autogenous bone (AB) graft on bone healing in surgically created criticalsize defects (CSD) in rat calvaria. Material and method: 50 rats were divided into 5 groups: C, AB, AB/PRP-50, AB/PRP-100 and AB/PRP-150. A 5 mm diameter CSD was created in the calvarium of each animal. In Group C the defect was filled by blood clot only. In Group AB the defect was filled with 0.01 mL of AB graft. In groups AB/ RP-50, AB/PRP-100 and AB/PRP-150 the defects were filled with 0.01 mL of AB graft combined with 50, 100 and 150 µL of PRP, respectively. All animals were euthanized at 30 days post-operative. Standardized radiographic images of the rat calvaria were obtained using Digora System (Soredex, Finland). The images were evaluated by three examiners using scores that indicated the percentage of radiopacity of the defect. The obtained data were subjected to statistical analysis (Kruskal-Wallis test, p < 0.05). Result: Group C presented radiopacity significantly lower than groups AB, AB/PRP-50, AB/PRP-100 and AB/PRP-150. Group AB/PRP-50 showed radiopacity significantly greater than groups AB/PRP-100 and AB. Conclusion: It can be concluded that the proportion PRP/AB graft influences bone healing in CSD in rat calvaria.

Fluxo anual de cátions e ânions no Complexo alcalino-carbonatítico de Tapira, Minas Gerais

Pós-graduação em Geologia Regional - IGCE