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排序方式: 共有654条查询结果,搜索用时 15 毫秒
61.
Optically stimulated luminescence (OSL) dating of heated/fired materials of archaeological importance from various parts of India was attempted. A single-aliquot regenerative-dose (SAR) procedure was used for palaeodose determination in the quartz grains extracted from the heated materials using the luminescence produced by blue light stimulation. In most pottery samples, the palaeodose obtained using SAR-OSL is ∼6% lower than the palaeodose measured using thermoluminescence (TL) method. Broadly, there is good agreement between the SAR-OSL and TL ages of the artefacts and their archaeologically expected ages. The results suggest that routine dating of heated/fired materials using the SAR-OSL procedure is more practicable, especially when the TL sensitivity of the quartz grains is poor and availability of datable material is limited. 相似文献
62.
20世纪末,我国的物保护科学技术基本形成了具有中国特色的完整的科学体系。在石质物、金属物、纸张物、竹木漆器物、壁画物、石窟物等的保护技术方面取得了多项科研成果,并且达到或接近世界先进水平,使我国许多珍贵的化遗产得到了抢救和有效地保护。 相似文献
63.
Simon Naylor 《Transactions (Institute of British Geographers : 1965)》2002,27(4):494-513
This paper contributes to our understandings of the geographies of science through an analysis of nineteenth–century natural history and, in particular, of the provincial natural history society. Focusing on nineteenth–century Cornwall and one of the main natural history societies operating in the county at that time – the Penzance Natural History and Antiquarian Society – it is argued that a set of key spaces were integral to the operations and outputs of such societies. The paper details the significance of the Penzance Society's museum, field sites and lecture hall as sites for communal work of local natural historians. They were also important, it is argued, in their construction of West Cornwall as a site of national natural scientific importance. Lastly, these spaces defined an agenda for regional scientific study. In particular, they promoted a taxonomic method that would transform local people into rigorous scientists and the local region into a 'book of nature'. 相似文献
64.
J.M. POWELL 《Geographical Research》2010,48(3):249-264
James Arthur Prescott was a prominent soil scientist whose career responded to an increasingly complex, recognisably Australian web of interpenetrating spatial scales, served to promote revolutionary global advances in his chosen field, and in the process negotiated the blurred boundaries between ‘pure’ and ‘applied’ research. Encounters with this instructive life suggest that, while resolutions of pivotal anxieties might turn on ineluctably personal qualities, they also reflect a dynamic interplay between international, imperial, national and state contexts. Prescott's innovative contributions to soil science, fruits of a tenaciously consolidated career, influenced resource appraisal and environmental management across a prodigious continental expanse. A sustained focus on local and regional development brought him into contact with a wide range of contemporaries, including pioneering geographers, and culminated in his election to a Fellowship of the Royal Society. 相似文献
65.
K. Maria D. Lane 《Journal of Historical Geography》2011,37(3):300-311
Historical investigation of arid landscapes and communities in the American West has long focused on the pivotal influence of federal reclamation policy, typically characterizing its implementation as the application of scientific and technological methods to a variety of water resource management issues. This paper departs from traditional views of reclamation by highlighting the highly variable and contingent ways in which new science-based forms of water management were proposed and negotiated in specific local places with particular cultural, legal, and historical geographies. Drawing theoretically from literature on the ‘geography of science,’ the paper probes the ways in which authority for a scientific approach to water management was created, negotiated, and expressed in local and regional contexts in the Territory of New Mexico, where authoritative systems of practical resource use and administration had been in long use before the U.S. government initiated its federal water reclamation program in 1902. Specifically, the paper examines two disputes entered and argued in front of northern New Mexico’s Rio Arriba District Dourt between 1903 and 1905. By departing from the geographical and scalar perspectives typically applied to environmental histories of the West and its reclamation landscapes, this ‘microgeographical’ approach promises a fresh perspective that emphasizes the highly contingent ways in which science-based water policy was implemented in multiple and complex environments. 相似文献
66.
David Massell 《The American review of Canadian studies》2013,43(2):187-222
This essay reads Munro’s 2001 story collection as embodiment of her artistic accomplishment. Beginning with a 1952 internal Canadian Broadcasting Corporation reader noting “evocative and luminous phrases” in two of Munro’s earliest stories, it argues that such phrases have informed Munro’s fiction throughout her career. In Hateship, these phrasings are key to “Family Furnishings,” “Hateship, Friendship, Courtship, Loveship, Marriage,” “Post and Beam,” “The Bear Came Over the Mountain,” and especially “Nettles.” There Munro structures her stories around “real facts in the making,” combining autobiographical facts and situations with her imaginative renderings of them. This collection reveals Munro at the height of her accomplished art. 相似文献
67.
Regulating Scientific Diving and Underwater Archaeology: legal and historical considerations
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Jonathan Benjamin Robert MacKintosh 《International Journal of Nautical Archaeology》2016,45(1):153-169
The regulation of scientific and archaeological diving is complex but it is essential that underwater archaeologists are familiar with the requirements placed on them by legal systems. This paper outlines the history and development of current legal systems in four jurisdictions: the UK, USA, EU and Australia. This historical and legal approach informs key discussions facing maritime archaeologists; reference is made to training requirements, safety records and the question of who should be allowed to participate and who should be excluded from archaeological diving. 相似文献
68.
As scientific archaeology takes hold in Japan, our understanding of the nature and content of Japanese prehistory is changing
radically. All of the period boundaries of Japanese prehistory are being rewritten, and many new “archaeologies” are growing
up around particular scientific techniques. New publications in English give greater access to archaeological thinking in
Japan, while Japanese publications focus on ever-narrowing aspects of prehistoric lifeways. Policy changes are giving archaeologists
more access to the imperial tombs, and rescue teams are under less obligation to “save everything” as selective preservation
is instituted. 相似文献
69.
Ian S. Lustick 《Political Geography》1999,18(8):745
Political geography can make distinctive and important contributions to both geography and political science, but this will require attention to the boundaries of these disciplines, emphasis on the comparative advantage of geographers with respect to the study of the shapes of physical space, and systematic consideration of boundaries as problematically institutionalized norms. Mapping, per se, cannot be the core of any discipline. 相似文献
70.
陈双印 《中国历史地理论丛》2005,20(3):101-108
英藏敦煌文献S.529(V)号《诸山圣迹志》(又名《失名行记》)记载了五代时期的扬州城周里数,为研究五代时期的扬州城提供了极其珍贵的第一手资料。本文以敦煌文献S.529(V)号的记载为依据,利用古籍记载和考古资料,论证了五代时期扬州城存在的事实,同时利用该文献对扬州城的规模和城门数进行了探讨。 相似文献