56 research outputs found

    Numbers and the natural history of imagining the self in Taiwan and China

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    In the Chinese cultural tradition, numbers may be seen as meaningful, creative, even poetic things, and they figure prominently in accounts of the self. Rather than 'reducing people to numbers', quantification is used - by at least some people some of the time - as a mode of differentiating themselves from others, a means of narrating unique life experiences. This paper explores the role of numbers in accounts of the self, drawing primarily on a case study of one woman from rural Taiwan. It is suggested that a natural historical framework can help illuminate numbers and number systems as Chinese technologies of the imagination

    Examination of the structure of the transthyretin amyloid fibril by image reconstruction from electron micrographs

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    Familial amyloidotic polyneuropathies are autosomal-dominant, inherited disorders that are characterised by the aggregation of variant proteins in a fibrillar form and by the extracellular deposition of amyloid fibrils. In familial amyloidotic polyneuropathy type I the protein constituent is a variant transthyretin molecule that has a Val to Met substitution at residue 30. Patients with this form of the disease present with sensory and motor disturbances, widespread autonomic dysfunction and in some cases, vitreous opacities. We have used amyloid material from the vitreous humours of patients homozygous for this mutation and analysed the structure of the fibrils by thin section electron microscopy and image reconstruction. Cross-sectional images of 200 different fibrils were collected and aligned, manually at first and then with an automated process that uses iterative cross-correlation. The averaged cross-section calculated produced a detailed view of the fibril substructure. The diameter of the fibrils is about 130 Å. In cross-section they exhibit 4-fold symmetry with four proto-filaments, each measuring 40 to 50 Å across, arranged around a central hollow core
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