Subtraction
Mostrando 37-48 de 401 artigos, teses e dissertações.
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37. Estudo comparativo entre ultra-sonografia com Doppler colorido, angiografia por ressonância magnética, por subtração digital 2D e 3D na doença dos vasos carotídeos cervicais / A comparative study of Doppler ultrasound, magnetic resonance angiography, 2D and 3D digital subtraction angiography in cervical carotid stenoocclusive disease
INTRODUCTION: Noninvasive techniques such as Doppler ultrasound (DUS) and contrast enhanced magnetic resonance angiography (CEMRA) are each day more used in the evaluation of the internal carotid arteries (ICA). On comparison studies 2D digital subtraction angiography (2D DSA) has been considerate as the reference standard, however its an expensive and invas
Publicado em: 2009
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38. Avaliação in vivo da densidade óssea ao redor de implantes osteointegráveis com diferentes plataformas / In vivo assessment of bone density around dental implants with different platforms
In regard of the high successful rates and the excellent outcome, dental implants become the first option in rehabilitation for dental loss. In this way the maintenance of soft peri-implant tissues came up as a new issue to consider especially when esthetic areas are being restored. Generally a bone loss of approximately 1,5 mm occurs after one year of denta
Publicado em: 2009
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39. Digital subtraction as tool for detecting tumors in mammographic images of dense breasts: an approach using computational simulation / Subtração digital como ferramenta para detecção de tumores em imagens mamográficas de mamas densas: uma abordagem utilizando simulação computacional
O presente trabalho tem por objetivo propor um modelo envolvendo subtração digital de imagens obtidas a diferentes níveis de energia do feixe de raios X, para possibilitar a detecção de lesões malignas da mama que, no modo tradicional de realização do exame, seriam totalmente camufladas quando superpostas por tecido de absorção semelhante. A pesqui
Publicado em: 2009
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40. Comparação entre implantes unitários de superfície tratada e não tratada por sub-tração radiográfica digital em protocolos de carga imediata e convencional / Comparison between single-tooth treated and non treated surface implants by digital subtraction radiography on immediate and con-ventional loading protocols
Objetivos: O objetivo desse estudo foi comparar através da subtração radiográfica digital (SRD), associada à avaliação clínica, a resposta óssea a implante unitário de superfície tratada (ST) e a implante de superfície não tratada (SNT) utilizando protocolos de carga imediata (CI) e convencional (CON). Material e métodos: 12 pacientes (8 pelo p
Publicado em: 2009
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41. Habilidades metacognitivas em matemática: desenvolvimento por meio de problemas aritméticos verbais com história no ambiente lúdico de aprendizagem de realidade suplementar / Metacognitive skills in mathematics: development through verbal arithmetic problems with history in a playful learning environment of surplus reality
This research situates within the context of investigations that seek to contribute to the teaching of mathematics in the early grades of schooling. Investigations in this area suggest that the metacognitive skills of the individual should become the focus of instruction in the classroom. The literature on mathematics education highlights the activities of p
Publicado em: 2009
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42. Formulação dual em mecânica da fratura utilizando elementos de contorno curvos de ordem qualquer / Dual boundary element formulation in fracture mechanics using curved element of any order
This work presents the dual boundary element formulation applied to linear crack problem. The goal of this research is the evaluation of stress intensity factor for two-dimensional crack problem using three different techniques, which are: the technique of correlation of displacements, the technique based on the state of tension at the crack tip and J integr
Publicado em: 2009
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43. Within-breath analysis of respiratory mechanics in asthmatic patients by forced oscillation
INTRODUCTION: The within-breath analysis of respiratory mechanics by the monofrequency Forced Oscillation Technique (mFOT) is of great interest in both physiopathology studies and the diagnosis of respiratory diseases. However, there are limited data on the use of this technique in the analysis of asthma. This study evaluates within-breath mechanics of asthm
Clinics. Publicado em: 2009
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44. Avaliação longitudinal do selamento de dentina cariada em lesões profundas de cárie
Este estudo avaliou clínica e radiograficamente dentes com lesões profundas de cárie submetidos ao selamento de dentina cariada por 10 anos. Trinta e dois dentes permanentes foram submetidos à remoção parcial de dentina cariada da parede pulpar da cavidade, remoção completa da dentina cariada das paredes laterais (critério de dureza clínica), forra
Publicado em: 2009
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45. Regulation of Gene Expression by Phosphate in the Filamentous Fungus Neurospora crassa / Regulação da expressão gênica pelo fosfato no fungo filamentoso Neurospora crassa
Gene expression regulation is crucial for all organisms to rapidly adapt to environmental changes. These adaptive mechanisms are highly complex and most of them have not been completely elucidated. The inorganic phosphate (Pi), an essential nutrient for all organisms, is required for important cellular processes, such as nucleic acids biosynthesis and metabo
Publicado em: 2009
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46. Radiographic image analysis of apicetomized roots irradiated with Nd:YAG laser using imaging processing of direct digital radiographs / Análise da imagem radiográfica de raízes apicetomizadas e irradiadas com laser de Nd:YAG por meio do processamento de imagem de radiografias digitais diretas
In this research, we carried out an evaluation of the digital radiographic image of dental root-ends irradiated with Neodymium Yttrium Aluminum Garnet (Nd:YAG) laser after apical resection. With the intention of founding alterations in the digital radiographic image of the roots caused by laser irradiation, we developed an in vitro experimental model. We mad
Publicado em: 2009
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47. Treatment of intrabony defects with ABM/P-15 or GTR in patientes with agressive periodontitis: a Clinical, Radiographic and gingival fluid cytokines levels evaluation / Avaliação do uso de matriz óssea bovina inorgânica associada ao peptídeo de adesão celular no tratamento de defeitos infra-ósseos em pacientes com periodontite agressiva. Estudo clínico, radiográfico e laboratorial em humanos
Background: Intrabony periodontal defects present a particular treatment problem, especially in patients with Generalized Aggressive Periodontitis (G-AgP).Researches have been performed in order to improve the results of regenerative procedures. Material and Methods: The aim of this study was to compare outcomes of intrabony periodontal defects following tre
Publicado em: 2009
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48. Relações entre a cobertura vegetal e os meios físicos e antrópicos na Microbacia Córrego dos Veados, Tanque Grande, Guarulhos, SP.
The adoption of micro hydrographic basin as units of environmental studies hás made possible to analyze them in holistic way, as demand this type of research. In this case, this dissertation discusses studies in the area of the reservoir Tanque Grande, located in the city of Guarulhos, São Paulo State, Brazil. For in such a way, it was selected the micro h
Publicado em: 2009