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The original fineness of coins is very important information that can help us to understand the commercial situation in a wide historical context. This paper deals with a comparison of analytical methods suitable for the evaluation of the actual and original fineness of coins based on a detailed case study of a medieval coin sample. Both non‐destructive (i.e., scanning electron microscopy/energy‐dispersive X‐ray spectroscopy, X‐ray fluorescence, atomic force microscopy and hydrostatic weighing) and destructive (i.e., inductively coupled plasma – mass spectrometry and the Volhard titration method) techniques were used. The original fineness can be also deduced from knowledge of the internal structure of the coin (limited miscibility of copper and silver). A new analytical method based on a combination of a micrograph of the metallographic cross‐section with consequent image analysis was developed for determination of the original fineness. The proposed approach is relatively simple and provides reliable values. Sample heterogeneity and its impact on the determination of fineness are also discussed. 相似文献
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Nataša Bakić-Mirić 《European Legacy》2008,13(7):825-836
The enslavement of Africans did strike the young, hopeful and radical Romantic poets of nineteenth-century England as the most blatant example of human oppression and the clearest example of humans being deprived of liberty. Although their poetry refers to and draws on the imagery of African slavery, the major poetic figures of the Romantic Movement in England rarely spoke directly against the slave trade and colonial slavery. Thus the issue of slavery, the transatlantic trade, and Britain's role in it, though well established in the nineteenth-century historical context, remained a subject only partially explored by the English Romantic poets, who were, at the time, more preoccupied with British domestic policy and the enslavement of their own nation. 相似文献
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This paper provides a unique perspective on trust in Australian society using data from the first wave of a longitudinal study of young people in Queensland. Questions central to young people's expectations regarding institutions and significant others are interrogated. Trust assumes critical importance in this context because it is an important aspect of the future-oriented deliberative processes young people engage in. Gender, indigenous status and religiosity are key determinants of trust across a range of indicators. Boys are less likely than girls to trust significant others such as friends and siblings or to trust environmental groups, but are more trusting of sportspeople, television and the Internet. Aboriginal children are more trusting of their siblings, teachers and neighbours, but less so of their parents. ‘Smart’ children are more trusting of their teachers and schools and feel more confident about their future, while general life satisfaction is positively associated with most measures of trust. 相似文献
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青海位于中原、西域、北方草原民族等文化圈的交融地带,出土了大量的隋唐时期联珠纹饰样的文物,生动地反映了隋唐时期中西经济、文化交流的盛况。萨珊联珠纹在青海地区的流行,对研究隋唐时期中、西亚文化在青海的传播发展,以及"丝绸之路青海道"在中西交通史上的历史地位具有重要意义 相似文献
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The paper applies Bayesian statistical modelling to radiocarbon dates obtained for a stratigraphic sequence comprising occupation features and superimposed burials from the Late Mesolithic (c.7400–6200 cal BC) to the Mesolithic–Neolithic transition (c.6200–5900 cal BC), from Vlasac in the Danube Gorges region of the north‐central Balkans. This sequence, investigated in the course of excavations at the site in 2006–9, yielded stratigraphic evidence of the transformation of local forager populations as a result of contact with Neolithic communities. Our paper provides a reliable chronological framework for changes from Late Mesolithic burial rites to new, Neolithic types of ornamental beads at the top of the sequence. The use of the same burial location and continuities in burial rites over a considerable period of time raise significant questions about the role of tradition and the potential for enduring practices in prehistoric societies. 相似文献
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Cristina Costa António Arêde Aníbal Costa Elsa Caetano Álvaro Cunha Filipe Magalhães 《International Journal of Architectural Heritage》2015,9(7):760-774
This article aims at presenting and discussing the strategies for updating the finite element numerical modeling of stone masonry arch bridges using operational modal analysis. The study comprehended three bridges: two old ones, the St. Lázaro and the Lagoncinha bridges, and a recently constructed bridge in Vila Fria, Portugal. Updating of the bridge models is performed by comparing the numerical and experimental modal parameters. Three-dimensional detailed numerical models are used to perform modal analysis of the bridges. Experimental modal identification of the bridges is based on the measurement of their acceleration responses during normal operation. The assigned material properties are also based on available results obtained from in situ and laboratory tests and on the results of visual inspection and historical research carried out for both old bridges. 相似文献
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Laila Kūle 《European Planning Studies》2014,22(4):758-774
AbstractThis article aims at a better comprehension of urban–rural interactions as a spatial concept and its utilization for spatial and regional policies. Based on literature review and on interviews with planners and experts, the article explores how the concept of urban–rural interactions is defined, characterized and structured. The understanding of urban and rural, how they are connected provides a basis for capturing complexities and development of urban–rural interactions. The study, reviews urban–rural policies and practises in Latvia. Contemporary built-up areas and lifestyles are influenced by imprints of past urban–rural interactions. Aspects of contextuality, cross-sectorality and informality have to be taken into consideration when urban–rural interactions are applied to the policy field. The article introduces a typology to capture both the diversity and particularity of places in terms of urban–rural connectivity. An insight is given how the current Latvian local government territorial structure can contribute to building target-oriented urban–rural partnerships. 相似文献