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31.
以往由于实物资料的匮乏,孔雀绿釉、洒蓝釉、瓜皮绿釉瓷器很少有从科学技术方面进行的研究,近年由于景德镇明代御窑遗址几次较大规模的考古发掘,极大丰富了这方面的资料。为了从科技方面更深入了解这类瓷釉的性质并为其以后的保护提供资料,本研究采用显微形貌观测法、激光剥蚀进样电感耦合等离子体光谱、能量色散X荧光和扫描电镜等对这些考古出土的宣德时期的孔雀绿釉、洒蓝釉、瓜皮绿釉瓷器进行了分析。分析揭示了这三种釉的形貌特点、腐蚀现象、胎釉组成、釉层元素分布情况,发现了胎釉之间有化妆土的存在并揭示了此物质的成分特点,讨论了高碱釉的工艺特征、瓷釉性质、剥釉机理。分析结果可为后续保护研究提供参考。 相似文献
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四川广元千佛崖石窟绿色颜料分析研究 总被引：1，自引：0，他引：1
千佛崖石窟位于广元市城北5㎞嘉陵江东岸,现存54窟、819龛、大小造像7000余身,这些珍贵文化遗产具有极高的艺术及科研价值。2008年由于受到汶川地震的影响,很多彩绘佛造像损毁情况严重,修复工作亟待进行。为此,本研究以四川千佛崖采集的7个样品的绿色颜料为研究对象,利用金相显微分析、偏光显微分析、拉曼光谱分析技术对其进行物象和成分分析。分析结果表明,千佛崖采用的绿色颜料主要为人工合成的氯铜矿和石绿,还有少量的巴黎绿,且处于颜料最外层,应为近代重新修复所施加的;同时,对于碱式氯化铜及其相关物质、石绿、巴黎绿在中国的使用情况及其应用特点进行探讨,以期对后期的保护工作提供借鉴作用。 相似文献
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用能量色散型X荧光分析仪测量了慈溪寺龙口等6个越窑窑址和洪州窑4个窑址出土瓷片胎釉的化学组成。在两地均观察到近距离窑址出土瓷胎间化学组成的差异,观察到越窑瓷釉配方的稳定性和南宋晚期时的明显进步,提出了洪州青瓷中铁含量从东汉到晚唐的马鞍形变化,可能反映洪州窑在晚唐的衰落和低铁原料的不易获得。 相似文献
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文章依据雍正、乾隆朝引见绿营武官的履历档案,分析了这一时期绿营武官的籍贯、民族等问题,并比较雍正、乾隆两朝的变化特点。揭示了旗人特别是满人的选官特权在乾隆朝更明显,任职比例大幅攀升,任职层级提高,且多在战略要地任职。陕甘籍官员以功绩、福建籍官员以水师技能也分享了选官特权。乾隆朝武官人事渐显因循化趋势,循资任职比例增多,避籍制度宽松、年龄增大。通过对出兵记录的分析,估算了这一时期出兵西北、西南和台湾的比例。 相似文献
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This article is focused upon exploring the development of the green economy in particular locations, with the aim of identifying why some cities and regions have been successful in engendering green growth. To date we have little idea where the green economy is developing, nor much insight, beyond anecdotal evidence, into why certain cities and regions appear to be more successful than others in this regard. We position our analysis within the context of research on socio‐technical transitions that has theorized the potential shift to a more sustainable economy. We review the literature on sustainability transitions and the development of the multi‐level perspective encompassing niches, regimes and landscapes. However, most research into socio‐technical transitions has not given adequate consideration to the influence of places and spatial scale in these transition processes, and we therefore critique the socio‐technical transitions literature from a geographical perspective. In this article we are interested in four key questions. What role does the enabling and facilitative state play in these cities and regions? What new institutional forms and governance structures are being developed? How do actors in particular cities and regions construct their green vision, and how do they encourage other actors to buy‐in to this vision? How are links across levels and spatial scales developed to connect niches with the regime? We address these through a focus upon the Boston city‐region in the USA, drawing upon both primary and secondary research material. We utilize this case study example to re‐examine and re‐theorize work on sustainability transitions from a spatial perspective. 相似文献
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Ed Brown Jonathan Cloke Danielle Gent Chloe Hill 《Geografiska annaler. Series B, Human geography》2014,96(3):245-259
This article examines recent institutional thinking on the green economy and the implications of official understandings and structuration of a green economy for the global South. Assertions about the transformative potential of a green economy by many international actors conceals a complexity of problems, including the degree to which the green economy is still based on old fossil economies and technical fixes, and the processes through which the green economy ideation remains subject to Northern economic and technical dominance. The article places the intellectual roots of the green economy within a broader historical context and suggests some ways the strategic economic and ideological interests of the global North remain key drivers of green‐economy thinking. The analysis is substantiated through two illustrative Latin American examples: the Mesoamerican Biological Corridor and green economy initiatives in Brazil. These suggest that, if the green economy is to address global challenges effectively, it must be conceptualized as more than a bolt‐on to existing globalizing capitalism and encompass more critical understandings of the complex socio‐economic processes through which poverty is produced and reproduced and through which the global environment is being transformed, a critique which also applies to mainstream discourses of sustainable development. 相似文献
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This paper analyses the policy dilemma of South Korea’s Lee Myung-bak government regarding the greenhouse gas Emissions Trading Scheme (ETS), the cornerstone of the government’s Low Carbon Green Growth (GG) policy. The paper analyses policy governance, with a focus on the deliberative nature of the policy process. The ETS was promoted as a way to overcome certain international, political and socioeconomic challenges facing the government, yet the process of its establishment featured severe confrontations between the stakeholders (industrialists and environmentalists), and a lack of effort on the part of the government to pursue deliberation with them, resulting in a significant policy dilemma. The government reacted passively at first, and later responded with a symbolic decision that failed to pursue deliberative processes and exacerbated the situation. This paper addresses the theoretical and policy implications of this policy process by identifying the mechanism that created the policy dilemma. The reliability and validity of the study are substantiated through a multi-strategy approach, including a review of the literature and an in-depth interview with a government economic official. 相似文献
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THERESE LINDGREN MARIA R. NILSEN 《Tijdschrift voor economische en sociale geografie = Journal of economic and social geography = Revue de géographie économique et humaine = Zeitschrift für ?konomische und soziale Geographie = Revista de geografía económica y social》2012,103(2):196-208
Safety in green spaces was examined within residential areas with multi‐family housing in Swedish towns. The focus was on a specific type of space in order to identify elements important for the feeling of safety in that realm. The method used was qualitative interviews with residents and housing company staff. Housing staff and residents emphasised good lighting and low vegetation as important elements for feeling safe. Another key element raised by residents was knowing and recognising people in the area and being able to place them in appropriate contexts. Low shrubs and lighting improved the view. Visibility had a close connection to viewing other people and distinguishing between desirable and undesirable people, a classification aided by knowledge about residents in the area. The three elements lighting, cut shrubs and knowledge about neighbours are all contextualised and given meaning here in a broader understanding of how safety is experienced. 相似文献
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Mattias Qviström 《Geografiska annaler. Series B, Human geography》2010,92(3):219-235
The history of vernacular landscapes at the urban fringe is poorly studied, limiting our understanding of the contemporary character of the fringe and our knowledge of the urbanization process. This article argues the necessity of a combined analysis of the legacies of planning and the footprints of former landscape ideals in order to understand the conditions for spatial planning at the urban fringe. After first introducing the methodological use of landscape/planning history, the article focuses on the Swedish discourse on landscape change and landscape planning concerning the urban fringe in the 1930s. Particular focus is placed on the discourse on agricultural landscapes at the urban fringe. The third section of the article presents an examination of the footprints of the ‘landscape convention’ (i.e. an agreement on the meaning of landscape in relation to law and justice) resulting from the landscape discourse of the 1930s. The article argues that the legacy of the 1930s explains some of the difficulties arising when planners of today aim to utilize the farm landscape as a resource for recreation at the urban fringe. The shadow of the landscape discourse of the 1930s also creates difficulties in dealing with peri‐urban landscapes in Swedish planning and Swedish law. With the ongoing discourse on how to implement the European Landscape Convention, such knowledge is particularly useful. 相似文献
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