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红外光谱法研究不同丝含量老化蚕丝蛋白 总被引:1,自引:2,他引:1
古代丝织品是否含有丝胶,不仅对丝织品保存状况有一定影响,而且是丝织品文物保护处理方法选择的重要依据之一.为了研究红外光谱作为有效的研究不同丝胶含量丝织品老化的一种检测分析手段的适用性,工作应用红外光谱分析对不同丝胶含量的人工老化蚕丝纤维进行了研究.研究结果表明,不同丝胶含量样品的红外谱图,一些特征峰的峰形、峰位、峰高均有明显差异,并且经不同老化方式老化的蚕丝蛋白的红外光谱图也有各自的特征,1445cm-1/1625cm-1比值可用于区分不同丝胶含量的样品. 相似文献
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丝织品在老化过程中及老化后在水、乙醇、丙酮中的失重行为 总被引:3,自引:0,他引:3
本工作对丝织品在老化过程中及老化后在水、乙醇、丙酮中的失重行为进行了研究,目的是了解丝织品的老化机理并为丝织品清洗溶剂的选择提供参考。研究结果表明丝在光、热老化过程中均有失重,热老化丝织品在水中的失重相对于光老化小得多。所有失重均随老化程度及在溶剂中浸泡时间的增加而增加。乙醇、丙酮对老化丝的影响比水小得多。因此有机溶剂相对于水来说更适合用于丝的清洗配方中。 相似文献
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发展民营经济增加吉林省就业和收入研究 总被引:4,自引:0,他引:4
当我国改革开放的历史车轮向21世纪胜利推进的时候,失业和再就业这个跨世纪难题已凸现在我们面前。在当前的形势下,国有企业本身消化失业的能力已十分有限,靠国有企业解决失业的思路难以成为现实。比较可行的选择是大力发展民营经济,以此消除国有企业冗员劳动力向民营经济转移的所有制障碍,增强吸纳国有企业存量劳动力和社会新增劳动力的能力。吉林省作为一个农业大省,农村剩余劳动力庞大;同时,作为国家老工业基地,国有企业改革所带来的下岗失业问题更为严峻。启动民营经济对缓解目前吉林省城乡就业压力、增加人民收入,进而带动消费和促进经济发展有着重要的现实意义。 相似文献
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Jia Si 《Frontiers of History in China》2011,6(2):229-242
By examining the four reprints of Robert Morrison’s Wuche yun fu (Five wagonloads of words) produced during the second half of the nineteenth century, this paper outlines the emergence and evolution of Chinese-English bilingual dictionaries and their role in spreading standard English to a wider literary audience in the treaty port of Shanghai. In the language mosaic of treaty port society, bilingual dictionaries highlighted the gap between spoken pidgin and written English, demarcating two linguistic repertoires commanded by two different groups. In exploring the socio-historical background of the publication history of these dictionaries, this paper also sheds light on the publishing market, especially English study aids in late nineteenth-century Shanghai. 相似文献
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周原甲骨灼烧状况与风化原因研究 总被引:2,自引:0,他引:2
为了研究周原出土甲骨的灼烧状况与风化原因,用测色色差、X射线衍射、热重、扫描电镜和显微红外等多种分析手段对九种周原无字甲骨样进行了分析。结果表明,被分析样品都曾经受不同温度的灼烧,造成有机质丢失与骨头结构的破坏,这是导致甲骨风化的主要原因。出土后用酸浸泡清洗水垢,可能是导致甲骨风化的另一原因。在用于研究甲骨灼烧状况的诸多方法中,X射线衍射与扫描电镜分析两的作用突出。 相似文献
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司佳 《Frontiers of History in China》2009,4(3):340-357
Tracing the origin and circulation of the “jargon” spoken at Canton, the paper examines how “jargon” became an issue of Sino-foreign
communication conflicts in the early 19th century, and how Westerners responded to it. As a lingua franca spread extensively in the Canton trade, the so-called “jargon” (a pidgin form of patois) played an essential role as communication
tool between Chinese and foreign traders. However, in the eyes of missionaries in early 19th century China, the normal Sino-foreign contact process was interrupted and distorted by both parties’ overusing of the jargon.
In this regard, early Protestant missionaries’ support of Chinese language study reveals an initial effort to break through
the “jargon” barrier.
相似文献
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Siân Nicholas 《The Journal of imperial and commonwealth history》2013,41(2):207-230
The paper will investigate the growing importance in the late nineteenth century of civic identity in helping nurture a sense of ‘local patriotism’ during an imperial crisis. In doing so it will challenge recent studies that suggest working-class patriotism was a ‘top-down phenomenon’ or simply a devotion to nationhood and empire cultivated by state institutions and imperialist mass commercial leisure. This study will adopt a more nuanced approach and argue that working-class patriotism characteristically prioritised local identity over the national. In contrasting three English communities during the Boer War, it will be argued that, by the end of the nineteenth century, changes in the local press, the development of civic identity and a growth of a popular local patriotism became fused, at key moments, with grand imperial adventures. Viewed within this context, the great desire to celebrate the volunteers was not so much an example of successful state hegemony but more an amplification of local patriotism within an imperial setting. 相似文献
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ABSTRACTWhat do we actually know about how replicas of historical objects and monuments ‘work’ in heritage contexts, in particular their authenticity, cultural significance and intangible qualities? In this article we examine this question drawing on ethnographic research surrounding the 1970 concrete replica of the eighth-century St John’s Cross on Iona, Scotland. Challenging traditional precepts that seek authenticity in qualities intrinsic to original historic objects, we show how replicas can acquire authenticity and ‘pastness’, linked to materiality, craft practices, creativity, and place. We argue that their authenticity is founded on the networks of relationships between people, places and things that they come to embody, as well as their dynamic material qualities. The cultural biographies of replicas, and the ‘felt relationships’ associated with them, play a key role in the generation and negotiation of authenticity, while at the same time informing the authenticity and value of their historic counterparts through the ‘composite biographies’ produced. As things in their own right, replicas can ‘work’ for us if we let them, particularly if clues are available about their makers’ passion, creativity and craft. 相似文献