Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1977. / Microfiche copy available in Archives and Engineering. / Includes bibliographical references. / M.S.

Made available in DSpace on 2014-06-11T19:30:56Z (GMT). No. of bitstreams: 0 Previous issue date: 2008-10-10Bitstream added on 2014-06-13T20:40:53Z : No. of bitstreams: 1 roat_tc_dr_rcla.pdf: 3118917 bytes, checksum: 7fa7780c7ad97251c717e1fa8f9219e5 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Apis mellifera é um organismo de grande interesse para estudos neurobiológicos, pois além de apresentar um cérebro estruturalmente simples, se comparado ao dos vertebrados, apresenta características próprias relacionadas ao comportamento social, com capacidade de memória e aprendizagem. As colônias destas abelhas são constituídas por machos e fêmeas, as fêmeas dividindo-se em duas castas, operárias e rainhas. Sabendo-se que as castas e os machos de A. mellifera apresentam morfologia, fisiologia e padrões comportamentais bastante distintos que, por sua vez, estão, em boa parte representados no polimorfismo cerebral, o presente trabalho visou desvendar como essas diferenças se estabelecem a partir do cérebro larval, basicamente igual para todos. Sendo A. mellifera uma espécie holometábola a transformação das estruturas larvais para as dos adultos ocorre durante a metamorfose, ou seja, durante a pupação. Para melhor compreensão, o estudo iniciou-se com a caracterização das diferenças morfológicas entre os cérebros de operárias, rainhas e machos recém emergidos. A partir da verificação de quais eram as estruturas que mais se diferenciavam entre as classes de indivíduos que compõem a colônia, foram escolhidas para ter sua diferenciação acompanhada os corpos pedunculados, os lobos ópticos e a pars intercerebralis no protocérebero e os lobos antenais no deutocérebro. Dessas estruturas foi feito um estudo comparativo entre operárias, rainhas e zangões usando preparações para microscopia de luz, mensurações da área ocupada por alguns de seus componentes, estudos estruturais de outros, bem como uma estimativa das taxas de multiplicação, e mortes celulares com técnicas citoquímicas e imunocitoquímicas. Esses estudos foram iniciados com larvas no último estágio larval... / Apis mellifera is an interesting model to neurobiological studies due to the simplicity of its brain commanding the complex behaviors demanded by the eusocial relationships and its capacity of learning and memorizing. The colonies of this bee consist of males and females. The females are differentiated in two castes: workers and queens. The castes and males from A. mellifera have distinct morphology, physiology and behavior correlated with their functions in the society and represented by some brain polymorphism. In this context the aim of the present study was clear up how the adult brain differences are established parting from the larval brain basicalIy equal to alI kinds of individuaIs. A. melliftra is a holometabolous insect and therefore, the change of the larval structures to the adult ones occurs during pupation or metamorphosis. In order to have a better vision of the differences found among the adult brains. was done a comparative morphological study of the brain from newly emerged workers, queens and males. The results showed that the brain structures more distinct among the individual classes were the mushroom bodies, optic lobes and pars intercerebralis from the protocerebrum and the antennal lobes from the deutocerebrum. Those were choose for have their differentiation accompanied during metamorphosis. Comparative studies of the structures among workers, queens and males were done using light and electronic microscopy, measuring the areas occupied from some of their components and estimative of the rates of mitosis and cell death using cytochemical and immuno-histochemical techniques. These studies started in the last larval instar and continued in pre-pupae, white, pink, brown, and black eyed pupae until black body pupae. Besides a search for differential protein expression among the individual classes whole brain was done... (Complete abstract click electronic access below)

When one takes an x-ray, one learns how much material is along the line between the x-ray source and the x-ray sensor. The goal of tomography is to learn what one can about an object, by knowing how much material is on a collection of lines or rays passing through that object. Mathematically, this is a collection of line integrals of density function of the object. In this paper, we provide and prove reconstructions for a class of convex objects of uniform density using x-rays from three point sources.

Thesis (M. P. A.)--University of Hong Kong, 2006. / Title proper from title frame. Also available in printed format.

Thesis (Ph.D.)--York University, 2008. Graduate Programme in Social and Political Thought. / Typescript. Includes bibliographical references (leaves 468-490). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:NR46008

In post-war Canada, married women’s labour force participation rose dramatically. Labour historians have studied this trend with a primary focus on married women’s disadvantaged position in the labour market. This thesis examines female factory workers as manual labourers and asks how their bodies affected and were affected by their jobs, and how specifically female embodiment shaped their experience of work. Using the framework of job-related, cultural, and reproductive body work developed by sociologist Chris Shilling, this case study examines the experiences of eleven women who worked at the Moir’s candy plant in Halifax between 1949 and 1970. Semi-structured interviews are the main source of research data for this study. This case study explores working conditions at Moir’s, such as work on conveyor belts, the gendered division of labour, piece-work, and breaks, and determines the ways the women responded to and also shaped these conditions. The women’s testimonies reveal that their embodied experience as labourers was based both in workplace conditions (such as company regulations) and in family responsibilities. There are three main findings. First, I argue that in the context of the Moir’s factory, women’s acts of sabotage (in the form of breaking the conveyor belts), use of make-work, and development of other coping strategies were intended to create needed leisure time in the workplace. Second, I challenge the common assumption in labour sociology that factory work does not require that employees carry out true emotional labour. I argue that feelings of pride and shame had a strong influence over the women’s workplace dress and behaviour; managing these feelings were an important part of the women’s occupation. Finally, I argue that in the post-war era, women’s reproductive body work was directly connected to their paid labour because of the lack of public childcare and other reproductive labour resources available to wives and working mothers.

No description available.

Thesis (doctoral)--Universität Freiburg in der Schweiz.

Thesis (doctoral)--Universität Köln.

Thesis (Ph. D.)--Oregon State University, 1995. / Typescript (photocopy). Includes bibliographical references (leaf 80). Also available on the World Wide Web.