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61.
This paper seeks to uncover narratives of climate change shaped within two distinct but related research communities in glaciology and meteorology, both institutionally located at the Stockholm Högskola, later Stockholm University, and with widespread collaborative networks in the Nordic countries, the United Kingdom, and the United States. During the 1930s, Stockholm glaciology under Hans W:son Ahlmann provided an early theory of ‘polar warming’, based on solid field data from the North Atlantic and Arctic realm, but remained resistant to ideas of human climate forcing and thus lost a lot of its emerging policy influence. Stockholm meteorology under Carl-Gustaf Rossby followed a different trajectory. Based on geophysical theory and computer science experimentation funded by military sources on both sides of the Atlantic, the Rossby school established an early institutional acceptance of greenhouse explanations of climate change with strong links to policy. This account of divergent research agendas, differential extra-scientific conditions, and contradictory representations of the direction and causes of climate change should caution against viewing the history of climate science and policy as a cumulative affair based on ever more precise and better knowledge. The narratives presented here highlight, on the contrary, the importance of broad science politics as well as local and disciplinary methods, traditions, and institutional trajectories in shaping attitudes among scientists to climate change. 相似文献
62.
2020年10月,三星堆遗址新发现祭祀坑正式启动考古发掘工作。随着发掘工作的推进,大量象牙相继出土。由于长期埋藏于潮湿的地下环境,象牙基本处于饱水状态,保存状况较差。为了使象牙保持相对稳定的状态,在考古发掘现场针对不同象牙的发掘情况,采用高分子绷带进行固形处理,然后整体提取回实验室清理。清理完成的象牙,经过保湿杀菌处理后存放至低温高湿专用库房。三星堆遗址三号祭祀坑出土象牙的成功提取与保护,表明医用高分子绷带具有超越石膏提取法的应用优势,对类似出土遗物的现场保护工作有一定的借鉴作用。 相似文献
63.
宁波\"小白礁Ⅰ号\"清代沉船位于浙江宁波象山石浦北渔山岛海域,于2014年发掘出水。经过长期的水下埋藏,\"小白礁Ⅰ号\"残存船体构件遭受多种病害破坏,亟需开展保护修复。通过对\"小白礁Ⅰ号\"船体构件的全面调查,并采样进行了树种、含水率、形貌、化学组分、可溶盐及微生物等多方面的分析,得知残存船体大部分保存状况较好,但不同部位保存状况差别较大,病害类型多样。相关分析和评估工作为船体后续保护处理提供了依据。 相似文献
64.
李存信 《文物保护与考古科学》2007,19(2):64-71
近些年来,考古出土遗迹和遗物的种类越来越丰富,利用何种方法手段去处置和保护,使这些珍贵的遗迹和遗物有效地保存下去是一个重要的研究课题。为此,介绍了一些对考古出土遗迹和遗物有效的处置保护措施与方法,为考古学科的开展和研究提供更加全面翔实的实物资料。 相似文献
65.
为全面了解武汉博物馆的文物保存环境现状,科学评价该馆文物库房环境达标试点工程的成效,总结实践经验,服务我国馆藏文物保存环境改善工作,采用相关检测设施和仪器分析手段,针对该馆的改造新文物库房、未改造老库房、文物储藏柜、包装囊盒、陈列展厅、文物展柜内的环境质量,检测了其中的温度、相对湿度、甲醛浓度、板材的木材含水率、可见光照度以及紫外辐照强度等指标,并对环境中的酸性气体和VOC浓度进行了采样分析。检测研究结果表明,武汉博物馆达标改造工程对库房温湿度和光照水平的控制成效明显,基本达到了文物保护要求;增添使用的文物储藏柜、包装囊盒、活性炭吸附材料等具有一定的微环境调控效果。由于装饰材料和橱柜材料等散发污染物的影响、恒温恒湿系统的间歇式运转模式、部分老库房和展厅采用无防护自然采光设计等原因,现文物保存环境中还存在主要污染气体浓度普遍偏高、湿度呈现短周期性波动、局部光照水平偏高等情况。对此,给出了一些建议。 相似文献
66.
2004年2月,陕西省考古研究所与北京大学考古文博学院联合成立周公庙考古队之始,就把判定该遗址商周时期聚落性质作为学术研究 相似文献
67.
Vladimir E. Bulatov Catherine Delano Smith Francis Herbert 《Imago Mundi: The International Journal for the History of Cartography》2013,65(1):71-82
Abstract The chance assembling of a number of different impressions of Andrew Dury's Map of the present Seat of War between the Russians, Poles, and Turks (1769) in the British Library led the authors to examine the map's carto‐bibliographical history. Nine states of the map, two of which were sometimes sold with printed paste‐ons, have been identified to date. The two earliest states of the map are now in the State Historical Museum, Moscow. Although both are best described as proof, or pre‐publication, impressions, each bears evidence of intensive use at the highest levels of the Russian army command. Indeed, the circumstances leading to the creation of the map by Andrew Dury and Peter Bell and to a succession of different versions over the three decades or so of intermittent Russian‐Turkish hostilities highlight the interplay of international politics, individual initiative and commercial factors in late eighteenth‐century map production in London. 相似文献
68.
Previous studies have shown that both distribution and intensity of response parameters in asymmetric buildings are dependent on their stiffnesses and strength distributions. The locations of centers of strength and rigidity relative to the center of mass provide suitable metrics for strength and stiffness distributions. In general, the proper locations of these centers are a function of earthquake ground motion characteristics and the level of building's nonlinear responses. In this article, using nonlinear response evaluation of single-story building models with a wide range of uncoupled torsional to lateral frequencies subjected to near field and far field earthquake excitations the proper location of building centers is studied . Diaphragm rotation, interstory drift, hinge plastic rotation, and ductility demand are selected as damage measure parameters. To compare the performance of models in each limit state, fragility representation of responses is used. It is concluded that proper configuration of building centers in a torsionally stiff building fundamentally depends on the chosen demand parameter. The proper configuration of centers in a torsionally stiff building for a specific demand parameter can converge the probability and distribution of related damages to those in the symmetric building counterpart. When the critical demand parameter for a case is identified, its corresponding arrangements of centers for a suitable seismic behavior may also be recognized. By rearranging the configuration of centers based on the attained configuration, the adverse effects of asymmetry can be avoided. 相似文献
69.
ABSTRACTÇatalhöyük was first discovered as one of the earliest urban settlements in the late 1950s and excavated by James Mellaart between 1961 and 1965. The 9000-year-old town in central Turkey rapidly became famous internationally due to the large size and dense occupation of the settlement, as well as the spectacular wall paintings and other art that were uncovered inside the houses. Since 1993, under the direction of Ian Hodder, research at Çatalhöyük has pioneered a reflexive approach to archaeological practice, in which information is permanently open to reinterpretation by both scholars and the public. This approach acknowledges the mutual dependence of knowledge and the underlying research, to which end the Çatalhöyük Project decided to make its records available via the Web and to invite public comment since its onset. After 25 years of excavation, the project’s digital assets now amount to close to 5TB, including formal textual and numeric records, freetext documents, audiovisual materials, and a comprehensive collection of spatial data. The reflexive method, or ‘documentation of the documentation process,’ adds a separate layer of information that specifies how data have been gathered, and facilitates critique, understanding, and the evolution of knowledge.In this paper we lay out our vision of an interactive archive that provides access to the multi layered information contained in this massive amount of data and how web technological advances have been incorporated into the digital data management at Çatalhöyük. Ultimately, the goal is to support an interdisciplinary process of assembling data into arguments on the basis of multiple lines of evidence. The ‘Living Archive’ will enable intuitive engagement across the entire variety of research, making use of the rich reflexive information stored with the data. The results of new analyses can in turn be reintegrated with the already existing data. The application will use open standards so that the knowledge gathered at Çatalhöyük can be linked with other projects that follow similar publication procedures based on the semantic web approach. 相似文献
70.
《毛诗正义》在《诗》学理论、《诗》学方法和《诗》学品格三个维度为宋代《诗》学的新变提供了可供更新和强化的基因,在唐代《诗》学向宋代《诗》学的演进过程中实扮演着继往开来、导夫先路的重要角色。它对后世《诗》学具有重要影响力,很大程度上须归功于其可贵的《诗》学品格。 相似文献