Size effect on the strength of micron-sized polycrystals – A dislocation dynamics simulation study

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Promoting traditional occupations in indigenous populations of Meghalaya, India

370-377Indigenous people have the right to own, use, develop and control the lands, territories and resources that they possess by reason of traditional ownership or other traditional occupation. A study was conducted in Meghalaya state on 2 traditional occupations, blacksmithy and manufacturing of bows and arrows. A representative sample of 15 families in blacksmithy and 10 families involved in the manufacture of bows and arrows were chosen. Observational and interview surveys were done by the first author through personal visits. The analysis of data shows many positive factors for promoting traditional occupations that are worth preserving such as creativity, traditional knowledge, uniqueness, identity, self-worth and contribution to the economic and social factors of the community. The agricultural implements are still traditional and perhaps can be improved to provide better mechanical advantage and higher incomes. Traditional occupations continue to play a major role in the social and economic lives of the people and must be encouraged to develop further to enhance rural economy and also capture the unique identity of the people. Educational institutions, NGOs, concerned government ministries and private organisations through social responsibilities schemes can help preserving and promoting this unique but rich and wonderful knowledge of the indigenous people

Promoting traditional occupations in indigenous populations of Meghalaya, India

Indigenous people have the right to own, use, develop and control the lands, territories and resources that they possess by reason of traditional ownership or other traditional occupation. A study was conducted in Meghalaya state on 2 traditional occupations, blacksmithy and manufacturing of bows and arrows. A representative sample of 15 families in blacksmithy and 10 families involved in the manufacture of bows and arrows were chosen. Observational and interview surveys were done by the first author through personal visits. The analysis of data shows many positive factors for promoting traditional occupations that are worth preserving such as creativity, traditional knowledge, uniqueness, identity, self-worth and contribution to the economic and social factors of the community. The agricultural implements are still traditional and perhaps can be improved to provide better mechanical advantage and higher incomes. Traditional occupations continue to play a major role in the social and economic lives of the people and must be encouraged to develop further to enhance rural economy and also capture the unique identity of the people. Educational institutions, NGOs, concerned government ministries and private organisations through social responsibilities schemes can help preserving and promoting this unique but rich and wonderful knowledge of the indigenous people

Influence of Ethanol with Karanja Oil on Exhaust Gas Emissions from a Variable Compression Ratio Engine

Biodiesel is an alternative choice for diesel and have benefits over diesel because, it is renewable, biodegradable, sulfur free, and non-poisonous in nature and less exhaust emissions. The transesterification process is used to reduce the viscosity of the karanja oil. The aim of this paper is to examine the emission parameters under variable compression ratios (17 and 18) in a VCR diesel engine which runs using karanja oil 20% (B20) and ethanol as an additive by adding 5% and 10% at constant speed of 1500 rpm with variable loads. The outcomes of these blends have been compared with the normal diesel. The influences of compression ratios on exhaust gas emissions were investigated. The exhaust emissions, namely hydrocarbons, NOx, carbon monoxide and carbon dioxide are found to be reduced when compared with diesel

Size dependence of yield strength simulated by a dislocation-density function dynamics approach

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A new dislocation-density-function dynamics scheme for computational crystal plasticity by explicit consideration of dislocation elastic interactions

Current strategies of computational crystal plasticity that focus on individual atoms or dislocations are impractical for real-scale, large-strain problems even with today’s computing power. Dislocation-density based approaches are a way forward but a critical issue to address is a realistic description of the interactions between dislocations. In this paper, a new scheme for computational dynamics of dislocation-density functions is proposed, which takes full consideration of the mutual elastic interactions between dislocations based on the Hirth–Lothe formulation. Other features considered include (i) the continuity nature of the movements of dislocation densities, (ii) forest hardening, (iii) generation according to high spatial gradients in dislocation densities, and (iv) annihilation. Numerical implementation by the finite-volume method, which is well suited for flow problems with high gradients, is discussed. Numerical examples performed for a single-crystal aluminum model show typical strength anisotropy behavior comparable to experimental observations. Furthermore, a detailed case study on small-scale crystal plasticity successfully captures a number of key experimental features, including power-law relation between strength and size, low dislocation storage and jerky deformation.postprin

Authorization

This policy applies to all schools under the jurisdiction of the Cape Breton-Victoria Regiona

Rede de cuidado em saúde mental: visão dos coordenadores da estratégia saúde da família

RESUMO Objetivo Objetivou-se analisar a visão de coordenadores da Estratégia Saúde da Família (ESF) sobre a conformação da rede de saúde mental no município de Pelotas/RS. Método Estudo descritivo e exploratório, com abordagem qualitativa, realizado com seis coordenadores de ESF no ano de 2012. Para a coleta dos dados, foi utilizada a entrevista semiestruturada, e os resultados foram avaliados por análise temática. Resultados A rede construída pelos coordenadores é composta por poucos serviços formais e focada no Centro de Atenção Psicossocial (CAPS), e a rede informal é descrita com maiores pontos de cuidado. As trocas de corresponsabilidade no cuidado em rede ocorrem de forma frágil, sem o diálogo necessário. Conclusão Os coordenadores demonstram pouco conhecimento da rede formal de cuidado e uma atenção focada nos serviços da ESF e no CAPS. Reconhecem a importância de haver políticas públicas que valorizem e ampliem os espaços informais de cuidado no território