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21.
Four of the Koryǒ dynasty's earliest kiln sites are studied for the macroscopic, compositional, and microstructural characteristics of their celadon products. Recent excavation of Sǒri and surface investigation of Kangjin sites provided new materials for closer examination of the origin and early developments of celadon technology in traditional Korea. Two other sites, Wǒnhǔngni and Osari, with archaeological characteristics in common with the oldest layer of Sǒri, are also examined. Principal component analysis of body composition shows thai Sǒri and Kangjin had better control in their choice of raw materials whereas Wǒnhǔngnt and Osari had much wider scatter, showing the more experimental nature of their operation. The early Kangjin grouped out separately primarily because of their higher Al2O3 content, while X-ray diffraction patterns indicate they might have been fired at a higher temperature than other groups. The Korean method of two-step firing, first at a lower temperature to bake imglazed bodies and then at a higher temperature after glazing, is evident from the earliest operations in Kangjin.  相似文献   
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对云南剑川县出土的木质文物进行了研究,从超微结构层面更深入地解析了饱水古木的降解情况。出土的云南松(Pinus yunnansis)古木在饱水环境中淹埋了4 000多年。降解主要发生在晚材管胞,而且降解在晚材部分并不均匀:一些未降解的完好管胞分布在降解严重的管胞中。透射电镜观察显示:降解从S1/S2和S2/S3的界面开始;对于一些降解较严重的管胞,到腐朽后期细胞次生壁全部发生降解,只留下复合胞间层;细菌侵蚀是云南松饱水古木降解的主要原因。固体核磁共振结果表明:纤维素和半纤维素降解严重,木质素也出现了一定程度的降解。本研究可为其后续的加固保护提供科学的参考依据。  相似文献   
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ABSTRACT. This paper analyses the discourse of the migrant worker advocacy movement in South Korea to examine how activists' strategic framing can expedite the mobilisation of international norms despite significant cultural barriers. Korean activists argue on behalf of migrant workers that adopting international norms will help the Korean nation gain more respect from other nation‐states and that international norms are not antithetical to the true nature of the Korean nation. These framing strategies have enabled Korean activists to mobilise international norms despite cultural barriers. However, such a framing strategy does not cultivate a truly inclusive nationhood; Korean activists have circumvented cultural barriers, but have not overcome or transformed them.  相似文献   
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Live-in paid domestic work represents a peculiar form of paid employment and employer-employee relations. Contradictions and ambiguities arise from the domestic worker's 'workplace' being her employer's 'home'; while intimacy, affective labour and a high degree of personalism veil the asymmetrical class relation between employer and employee. In Toronto, employers are often white women, while domestic workers are often (im)migrant women, especially 'third world' women of colour. Given this, we draw on in-depth interviews with paid domestic workers working in Toronto to examine ways in which the employer-employee relations are constructed through interlocking, relational systems of difference, especially gender, 'race'/ethnicity, nationality, immigration/citizenship status and language. We focus on three major aspects of the employer-employee work relation from the viewpoint of the domestic workers-living-in, being 'like one of the family', and feelings of respect, dignity and self-worth. We find that many of the women shared a number of common concerns and experiences. However, the specific articulation of systems of difference led to a range of experiences of the extent of asymmetry in employer-employee power relations.  相似文献   
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This article revisits the politics of British merchants trading to North America in the period between 1763 and 1783. Their political success and failure in this critical period have been examined primarily in terms of their impact on the escalation of imperial crisis, with the day‐to‐day operation of merchant politics rarely taken into full account. This article takes an alternative approach of studying the political influence of merchants trading to North America within the context of their interaction with the state. By looking into the organisation, the process of lobbying, and the arguments that the merchants adopted, the article highlights how, in response to many sources of tension and uncertainty inherent within their relationship with the state, they demarcated their own areas of contribution to the shaping of commercial and colonial policy. Through the case study of merchants trading to North America, this article sheds further light on the necessity to understand the evolution of such modern political institutions as commercial lobbies in their specific economic and political contexts.  相似文献   
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