20 resultados para solid cultures


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In this article I focus on women workers’ experiences of transformation from line work to teamworking in Finnish clothing companies in the 1990s and also show what happened after this transformation in the clothing branch. The undertone of it is rather melancholic. Following an initial period of intensive and successful development, clothing work was moved from Finland to countries of cheap labour, such as Estonia, Latvia, Lithuania and Russia, and even China. In this type of network manufacturing, the development of modern information and communication technologies played a central role. My aim is to present the standpoint of women clothing workers in this process. The main body of the empirical data of my study consists of dialogues with clothing workers, union representatives, supervisors and managers. I also make use of my fieldwork notes, memos and research diaries from three companies over a period of five years. Furthermore, in the background lie the action research material from Scandinavian type work conferences and the survey material of an extensive mail inquiry that covered the whole branch in Finland. My own research started in 1991 as a mail inquiry and then continued as a case study in companies from 1992 to 2000, by employing action research and ethnographic methodologies.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Biotecnologia

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Pine forests constitute some of the most important renewable resources supplying timber, paper and chemical industries, among other functions. Characterization of the volatiles emitted by different Pinus species has proven to be an important tool to decode the process of host tree selection by herbivore insects, some of which cause serious economic damage to pines. Variations in the relative composition of the bouquet of semiochemicals are responsible for the outcome of different biological processes, such as mate finding, egg-laying site recognition and host selection. The volatiles present in phloem samples of four pine species, P. halepensis, P. sylvestris, P. pinaster and P. pinea, were identified and characterized with the aim of finding possible host-plant attractants for native pests, such as the bark beetle Tomicus piniperda. The volatile compounds emitted by phloem samples of pines were extracted by headspace solid-phase micro extraction, using a 2 cm 50/30 mm divinylbenzene/carboxen/polydimethylsiloxane table flex solid-phase microextraction fiber and its contents analyzed by high-resolution gas chromatography, using flame ionization and a non polar and chiral column phases. The components of the volatile fraction emitted by the phloem samples were identified by mass spectrometry using time-of-flight and quadrupole mass analyzers. The estimated relative composition was used to perform a discriminant analysis among pine species, by means of cluster and principal component analysis. It can be concluded that it is possible to discriminate pine species based on the monoterpenes emissions of phloem samples.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Biotecnologia

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A thesis submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy in Sanitary Engineering in the Faculty of Sciences and Technology of the New University of Lisbon

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Dissertation presented to obtain the Ph.D degree in Biochemistry, Neuroscience

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Thesis submitted to the Universidade Nova de Lisboa, Faculdade de Ciências e Tecnologia for the degree of Doctor of Philosophy in Environmental Engineering

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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica

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Dissertação para obtenção do Grau de Mestre em Biotecnologia

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Dissertação para obtenção do Grau de Doutor em Engenharia Química e Bioquímica

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia Química e Bioquímica

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Dissertação para obtenção do Grau de Mestre em Engenharia Química e Bioquímica

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Dissertação para obtenção do grau de doutor em Energia e Bioenergia

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Dissertação para obtenção do Grau de Mestre em Engenharia Física

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Dissertação apresentada para o cumprimento dos requisitos necessários á obtenção do grau de Mestre em Didáctica de Inglês