Análise e avaliação dos elementos de penetração no solo de equipamentos rodoviários após revestimento

The main objective is to analyze the abrasive wear resistance to the low stress of the elements that make up the organs of road machinery that are exposed directly to contact with abrasives. These samples were analyzed after these elements are coated superficially by the process of welding electrode coated with (SAER) and the manual process of coating type LVOF thermal spraying. As well, is to provide suggestions for a better recovery and return of these elements, which are reducing costs and avoiding downtime in the fronts of service. The samples were made from a substrate of carbon ABNT 1045 tempered steel, following the same specifications and composition of metals and alloys of constituents was followed the standard governing the dimensions of these samples and in accordance with the corresponding size. The results were evaluated by testing the hardness, abrasion resistance to wear by the low stress and the loss of volume involving the microstructure of coatings analyzed

Processamento e caracterização de compósitos Poli(METACRILATO DE METILA)/Sílica (PMMA/SiO2)

Currently the search for new materials with properties suitable for specific applications has increased the number of researches that aim to address market needs. The poly (methyl methacrylate) (PMMA) is one of the most important polymers of the family of polyacrylates and polymethacrylates, especially for its unique optical properties and weathering resistance, and exceptional hardness and gloss. The development of polymer composites by the addition of inorganic fillers to the PMMA matrix increases the potential use of this polymer in various fields of application. The most commonly used inorganic fillers are particles of silica (SiO2), modified clays, graphite and carbon nanotubes. The main objective of this work is the development of PMMA/SiO2 composites at different concentrations of SiO2, for new applications as engineering plastics. The composites were produced by extrusion of tubular film, and obtained via solution for application to commercial PMMA plates, and also by injection molding, for improved the abrasion and scratch resistance of PMMA without compromising transparency. The effects of the addition of silica particles in the polymer matrix properties were evaluated by the maximum tensile strength, hardness, abrasion and scratch resistance, in addition to preliminary characterization by torque rheometry and melt flow rate. The results indicated that it is possible to use silica particles in a PMMA matrix, and a higher silica concentration produced an increase of the abrasion and scratch resistance, hardness, and reduced tensile strength

Eversão da pálpebra superior e retirada de corpo estranho subtarsal

Este vídeo integra o curso Oftalmologia na Atenção Básica à Saúde (2016) que tem o objetivo apresentar as indicações, métodos e os materiais necessários para a realização do exame de eversão da pálpebra.

Curso EAD de Avaliação e Tratamento de Feridas na Atenção Primária à Saúde: abordagem através do Programa Telessaúde - módulo 1 - Feridas agudas

Este módulo do curso EAD de Avaliação e tratamento de feridas na Atenção Primária à Saúde: abordagem através do Programa Telessaúde, produzido pela equipe do TelessaúdeRS/UFRGS, oferece aos profissionais de Saúde orientações sobre tratamento de feridas agudas com ênfase em lesões traumáticas. No vídeo são apresentadas informações sobre os vários tipos de lesões traumáticas – como lesão por abrasão, por corte e por mordida de animal, entre outras – e sobre os cuidados de enfermagem em tais lesões.