The radiological accident in Goiania in 1987 caused a trail of human contamination, animal, plant and environmental by a radionuclide. Exposure to ionizing radiation results in different types of DNA lesions. The mutagenic effects of ionizing radiation on the germline are special concern because they can endures for several generations, leading to an increase in the rate of mutations in children of irradiated parents. Thus, to evaluate the biological mechanisms of ionizing radiation in somatic and germline cells, with consequent determination of the rate mutations, is extremely important for the estimation of genetic risks. Recently it was established that Chromosomal Microarray Analysis is an important tool for detecting wide spectra of gains or losses in the human genome. Here we present the results of the effect of accidental exposure to low doses of ionizing radiation on the formation of CNVs in the progeny of a human population accidentally exposed to Caesium-137 during the radiological accident in Goiânia, Brazil.
RESUMO-Diatomáceas epilíticas são componentes importantes no perifíton de ecossistemas aquáticos. Este trabalho objetivou conhecer a comunidade de diatomáceas epilíticas e sua distribuição em treze pontos amostrais de cinco arroios da sub-bacia Hidrográfi ca do Arroio Grande, RS, entre outubro de 2012 e março de 2013. As amostras foram oxidadas e montadas em lâminas permanentes para identifi cação em microscópio óptico. A fl ora de diatomáceas esteve composta por 106 táxons específi cos e infra-específi cos, distribuídos em 23 famílias e 41 gêneros. As famílias e gêneros mais representativos em número de táxons foram Cymbellaceae (12 táxons), Naviculaceae (11), Sellaphoraceae (10), Gomphonema Ehrenberg (10), Sellaphora Mereschkowsky, Nitzschia Hassall (sete), Navicula Bory e Pinnularia C.G. Ehrenberg (seis). Dados morfométricos dos espécimes são apresentados. Com relação à distribuição, os trechos superiores dos arroios apresentaram maior riqueza específi ca que os trechos inferiores. Este é o primeiro registro da comunidade de diatomáceas nesta sub-bacia hidrográfi ca. Palavras-chave:Bacillariophyceae, sistema lótico, composição fl orística ABSTRACT-Epilithic diatoms in lotic systems of the Arroio Grande hydrographic sub-basin, Rio Grande do Sul, Brazil. Epilithic diatoms are important components of freshwater periphyton. This study aimed to describe the composition and distribution of the epilithic diatom community in thirteen sampling sites in the Arroio Grande hydrographical sub-basin, RS, between October 2012 and March 2013. Samples were cleaned in oxygen peroxide and mounted on permanent slides for identifi cation. The diatom fl ora was composed of 106 species in 23 families and 41 genera. The most representative families and genera in taxa richness were Cymbellaceae (12 taxa), Naviculaceae (11), Sellaphoraceae (10), Gomphonema Ehreberg (10), Sellaphora Mereschkowsky, Nitzchia Hassall (seven), Navicula Bory, and Pinnularia C.G. Ehrenberg (six). Morphometric data for each species are presented. The upper reaches of the river basin presented greater specifi c richness than the lower stretches. This is the fi rst record of the diatom fl ora in this hydrographic basin.
Resumo Na interseção entre saúde, educação e o controle e prevenção de doenças infecciosas e parasitárias, consideram-se os conceitos e práticas de ergodesign como elementos fundamentais para geração de interfaces de materiais para aprendizagem interativa em saúde, que reflitam a relação entre usuário, tarefas e ambientes. Relata-se a avaliação de CD-ROM a partir de princípios do ergodesign, com vistas a colaborar para o acesso e disseminação da informação em saúde e auxiliar na aprendizagem interativa para profissionais de saúde de nível mé-dio e superior. Para tal, realizou-se levantamento de 21 materiais digitais de instituições internacionais e nacionais sobre as duas doenças. Os materiais foram avaliados através de uma lista de verificação: ergolist. Verificou-se que os materiais avaliados não atendem plenamente aos critérios de avaliação adotados. A avaliação e produção de tecnologias de informação e comunicação, como CD-ROM educativos e interativos, a partir dos princípios do ergodesign podem servir como instrumento facilitador na disseminação da informação e redução de fronteiras entre educação e saúde. Palavras-chave educação em saúde; dengue e doença de Chagas; ergodesign; CD-ROM. Abstract In the intersection between health, education and the control and prevention of infectious and parasitic diseases, ergodesign concepts and practices are considered fundamental elements in the generation of interfaces for learning materials in health, reflecting the relationship between user, tasks and environments. The authors conducted CD-ROM assessments based on ergodesign principles, with the aim of contributing to the access and dissemination of information relating to health and assisting in interactive learning for mid-and high-level health professionals. 21 digital materials about the two diseases, from national and international institutions, were surveyed. The materials were assessed through a checklist called the ergolist. It was found that the evaluated materials did not fully meet the evaluation criteria. The evaluation and production of information and communication technologies, such as educational and interactive CD-ROMs, based on ergodesign principles, can be a facilitating instrument in the dissemination of information and shrinking of frontiers between education and health.
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