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51.
19世纪末以来新史料的大发现 ,对史学发展产生了深远影响。五四前后是接受与认识新史料的重要时期 ,王国维等人积极利用新史料进行史学研究并大力介绍新史料 ,使五四时期的中国史坛很快认识到了新史料的价值 ,这对于五四时期史学乃至 2 0世纪史学都有着非常重要的意义。 相似文献
52.
为了鉴别文物表面常见的天然有机物,采用显微共聚焦拉曼光谱技术采集了古代常用的蛋白类、多糖类、脂肪酸类、树脂类4类6种有代表性的天然有机物的拉曼光谱。通过对皮胶、桃胶、蜂蜡、棕榈蜡、达玛树脂和琥珀标准样品的拉曼光谱分析,发现蛋白类的特征振动峰位于1657cm-1、1305~1252cm-1、1033cm-1及1003cm-1附近;多糖类的特征振动峰位于1463cm-1、1328cm-1、1258cm-1、1088cm-1、977cm-1等;蜡类的特征振动峰位于1470~1350cm-1区间,1659cm-1、1303cm-1、1636 cm-1及1610cm-1;树脂类的特征振动峰位于1660~1650cm-1区间和1460~1440cm-1区间。在对6种天然有机物光谱特征分析的基础上,得出了使用拉曼光谱法可实现古代文物表面常见天然有机物种类鉴别的结论。 相似文献
53.
The role of mimicry in the construction and deconstruction of social identities has enriched our understanding of power relations considerably. However, as a spatial practice, mimicry has received scant consideration. In what ways can space itself become an object of mimicry? What strategies and practices are involved in this process and with what political objectives? The current paper treats these questions by analyzing processes of mimetic spatial production aiming to transform the Israeli‐occupied territory of Mount Hermon into an “ordinary” western ski resort. Yet this concerted effort produces a variety of tensions and contradictions that ultimately undo the normalization of the colonial space, comprising a test case of the convoluted ways in which mimicry of space, not merely in space, generates various forms of slippage, excess and ambivalence. 相似文献
54.
Laurent Fontaine Roald Hayen Sebastiaan Godts Hilde De Clercq 《Conservation and Management of Archaeological Sites》2014,16(1):71-84
AbstractThe characterization of historic mortars by means of a concise methodology of material analyses can provide crucial information with regard to the origin of the raw materials and the ancient mortar technology. For the analysis of the historic mortars of the Coudenberg archaeological site, the methodology consists of optical and scanning electron microscopy, simultaneous thermal analysis, and an acidic treatment. These analyses were carried out on a total of seventeen samples lifted from various areas in the site, in function of the building chronology resulting from a historic built investigation. The type of binder and aggregate as well as their volumetric ratio were determined.Both binder and aggregate present distinctive features, which made it possible to identify the probable geological provenance of the raw materials. The observations are verified with available historical records regarding the construction of the main banqueting hall — the Aula Magna — and the use of raw materials such as limestone and sand for the production of lime and construction purposes. 相似文献
55.
李宏松 《文物保护与考古科学》2011,23(2):9-12
为了探讨文物岩石材料劣化结垢病害的特征和形成机理,以洛阳龙门石窟和北京西黄寺清净化城塔塔基砂岩条石为研究对象,采用全岩化学全分析和X射线衍射测试技术对两类结垢物质的成分和形成过程进行了系统分析和研究。研究结果表明,龙门石窟的结垢物是在水长期渗漏过程中对碳酸盐岩溶蚀改造沉淀后而形成的;而西黄寺清净化城塔塔基砂岩条石上的结垢物来源于砌筑砂浆(其主要物质成分为方解石),白色结垢物的形成机理为,砌缝砂浆在水渗流作用下发生溶蚀,溶蚀形成的溶液流至其下砂岩条石上经沉淀及重结晶形成结垢物。 相似文献
56.
Metin I. Eren Stephen J. Lycett Christopher I. Roos C. Garth Sampson 《Journal of archaeological science》2011
Lithic raw material constraints are widely assumed to be a determining factor of flaked stone tool morphology, but this assumption remains largely untested. We conducted a controlled experiment to determine whether a knapper’s growing replication skills would be hindered if the toolstone used was switched from large flakes of an easily worked chert to nodules of less tractable one. Two batches of Preferential Levallois cores were knapped, an earlier series made from standardised large flakes of sediments dominated by chalcedonic quartz followed by a more challenging one using variably-shaped, cortical nodules of microcrystaline quartz that varies in the completeness of quartz replacement of calcite and dolomite. Skill level markers were designed to measure the knapper’s ability to achieve a series of set goals. These were quantified and subjected to statistical testing. In all but one test, significant increases in skill could be detected from the earlier to the later batch of reductions, despite the drop in toolstone quality. Significant improvements in the consistency of the knapper’s output could also be detected. However, the switch to a more challenging, nodular chert did require extra shaping, which resulted in more waste. This masked visible progress towards producing a less costly core. Overall, our results do not support the assumed primacy of toolstone constraints over other factors in influencing the morphology of flaked stone tools. 相似文献
57.
为农村居民建立健康档案工作在我国处于起步阶段,根据农村居民健康档案的特点,规范健康档案的管理和有效利用,实现对农民健康的动态和连续管理,发挥健康档案对农村居民健康管理的作用,意义重大。 相似文献
58.
59.
《北梦琐言》是五代学者孙光宪撰写的一部史料性笔记小说,具有较高的史料价值。在《北梦琐言》与五代实录的关系问题上,有关学者存在着分歧。把《北梦琐言》与《旧五代史》等加以比较,以及查核《北梦琐言》的行文后,可知该书曾摘抄过五代实录。从荆南政权与中原王朝的关系及孙光宪的创作实际来看,孙光宪有可能看到并抄录五代实录。 相似文献
60.
Elizabeth Edwards James Scorer 《Journal of Latin American Cultural Studies (Travesia)》2017,26(2):131-139
The articles included in this special issue address the shifting relationship between traces of the past and photography in Latin America from the nineteenth century to the present day. Looking at different forms of materiality and trace in Latin America, from pre-Columbian remains to body art and industrial ruins, this issue also understands photographs as material objects that ‘act’ within particular visual economies. In this introduction, we offer some brief reflections on ruins and ruination in Latin America, and on the relationship between photography and the past. 相似文献