850 resultados para Clothing workers
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The mandibles of bees contain two types of tegumental glands whose function is not clear, despite the hypotheses put forward by several researchers. Although these glands have been found in all the bee species studied so far, observations have been confined mostly to workers of eusocial species in the forager phase. The work reported here involved a study of the morphology of the glands of newly emerged, nurse and forager workers, virgin and fecundated queens, and newly emerged and sexually mature males of Scaptotrigona postica, seeking to identify changes that may be linked to the bees life phase. Our findings indicate that the two types of glands are present in the species but not in all life phases or individual classes. The glands consisting of class I cells, the epithelial glands are present only in forager workers and fecundated queens. Glands of type III cells were studied in detail, and gland size was estimated from histological sections. The degree of development of the glands varies according to individual classes and life phases, suggesting different functions during the individuals life and from one individual to another. © Koninklijke Brill NV, Leiden, 2012.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Incluye Bibliografía
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Includes bibliography
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Includes bibliography
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Includes bibliography
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Includes bibliography
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Pós-graduação em Geografia - IGCE
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Available [in Spanish] at: http://www.cepal.org/cgi-bin/getProd.asp?xml=/publicaciones/xml/0/23120/P23120.xml&xsl=/comercio/tpl/p9f.xsl&base=/tpl/top-bottom.xslt
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This paper addresses how and why domestic workers in Jamaica are disenfranchised, with particular emphasis on the law’s inability to combat their exploitation in the labour force. My starting point is an online newspaper article entitled “Coping as a Domestic Helper”, which was based on a study investigating the living standard and coping strategies of minimum wage earners. In Jamaica domestic workers fall into three main categories - the residential worker, the non-residential weekly worker and the daily worker. Domestic workers are undervalued and their plight is especially grievous because they are characterized by a number of features that combine to have an exponentially negative effect on their social worth.
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Pós-graduação em Ciências Sociais - FCLAR
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)