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461.
Conference reviewed:
Socrates Intensive Programme 2003, University Of Vienna, 26 August–4 September 2003  相似文献   
462.
463.
古代汀州城是闽西的政治、军事、经济、文化中心,在一千多年的历史长河中,它从唐代草创到明清时繁荣,逐步发展为具有传统特色的历史文化名城。促使汀州城发展变化的原因主要是:生产力的提高和社会经济的繁荣;客家人的入迁,中原文化与闽越族文化的融合;汀江航运交通的发展。  相似文献   
464.
The historical Norberg mining district in central Sweden with its shallow, easily accessible iron ores figures prominently in the earliest documents from the 14th century concerning mining or metallurgy. This 1000-km2 district is considered to be one of the first areas in Sweden exploited for iron ores and, in fact, Europe’s oldest known blast furnace, Lapphyttan, is located in the Norberg district about 10 km from the mines in the village of Norberg (Norbergsby). Earlier archaeological excavations suggest the furnace was in operation as early as the 11th or 12th century (870 and 930 14C yr BP), and a number of other sites in the district have been dated to the 13th–15th centuries. Here, we have analyzed two lake sediment records (Kalven and Noren) from the village of Norberg and a peat record from Lapphyttan. The Lapphyttan peat record was radiocarbon dated, whereas the sediment from Kalven is annually laminated, which provides a fairly precise chronology. Our pollen data indicate that land use in the area began gradually as forest grazing by at least c. AD 1050, with indications of more widespread forest disturbance and cultivation from c. 1180 at Lapphyttan and 1250 at Kalven. Based on 206Pb/207Pb isotope ratios in Kalven’s varved sediment record, there is an indication of mining or metallurgy in the area c. 960, but likely not in immediate connection to our sites. Evidence of mining and metallurgy increases gradually from c. 1180 when there is a decline in 206Pb/207Pb ratios and an increase in charcoal particles at Lapphyttan, followed by increasing inputs of lithogenic elements in Noren’s sediment record indicating soil disturbance, which we attribute to the onset of mining the iron ore bodies surrounding Noren. From AD 1295 onwards evidence of mining and metallurgy are ubiquitous, and activities accelerate especially during the late 15th century; the maximum influence of Bergslagen ore lead (i.e., the minimum in 206Pb/207Pb isotope ratios) in both Kalven and Noren occurs c. 1490–1500, when also varve properties change in Kalven and in Noren sharp increases occur in the concentrations of a range of other ore-related metals (e.g., arsenic, cadmium, copper, iron, lead, mercury and zinc). From the 15th century onwards mining and metallurgy are the dominant feature of the sediment records.  相似文献   
465.
Forty-two conodont species are documented from the Liuxia, Shijiatou and Jingshan formations in Zhejiang Province of southeast China, located palaeogeographically on the Jiangnan Slope offshore to the Yangtze Platform. From these faunas, eight successive conodont biozones of Tremadocian to middle Floian (Early Ordovician) age are recognized, including the Cordylodus lindstromi Biozone, Cordylodus angulatus Biozone, Chosonodina herfurthi Biozone, Paltodus deltifer Biozone, Paroistodus proteus Biozone, Triangulodus bifidus Biozone, Serratognathus diversus Biozone and Prioniodus elegans Biozone. Several zonal index species of the Baltoscandian succession—Paltodus deltifer, Paroistodus proteus and Prioniodus elegans—are described and illustrated in detail for the first time from South China. Co-occurrence of P. proteus and Serratognathus bilobatus in several samples below the appearance of P. elegans also confirms correlation of the S. diversus Biozone (basal Floian) with the upper P. proteus Zone of the Baltoscandian succession. These Zhejiang faunas are dominated by pandemic forms, and are similar to those of the Open-Sea Realm elsewhere, inhabiting deep, offshore environments.  相似文献   
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467.
ABSTRACT

Masonry churches represent the major part of the Italian architectural heritage. Recent earthquakes stressed the high vulnerability of these constructions, provoking heavy structural damage and valuable losses. Different approaches have been developed to assess seismic vulnerability of churches. In particular, the complexity related to more detailed models has induced to define simplified methods, which can be used at territorial scale for a preliminary assessment of structural capabilities of homogeneous assets aiming at providing possible post-earthquake damage scenarios and suggesting general interventions strategies. Therefore, the vulnerability assessment of churches is carried out by subdividing the buildings into separate macro-elements, accounting for different possible collapse mechanisms. In this article, a simplified procedure (M.I.T. 2011) has been applied with reference to churches located in Caserta District, particularly those of the Alife-Caiazzo Diocese, by using the MaChro form compilation, previously developed by the authors. The aim of the study is the application of the above procedure in order to verify the possibility to suggest suitable strategies of intervention for structural retrofitting and seismic risk reduction of the churches located in the area under investigation.  相似文献   
468.
白云翔先生所著<先秦两汉铁器的考古学研究>一书出版已有些时日.我因早年研究过中国古代冶铁术,出版之初即通读了该书,并打算撰写书评,但考虑到自己近年的研究兴趣已更多地转移到了商代考古领域,未敢轻易置喙.最近再次拜读云翔先生的大作,深信该书提出的诸多议题,应引起学术界高度重视,故不揣浅陋,对有关问题略加讨论,不当之处,敬请作者和学界同仁指正.  相似文献   
469.
ABSTRACT

Probably the most important Romanesque artwork in Spain, the Portal of Glory of Santiago de Compostela is essentially made in granite, the most abundant stone in the NW of Iberia, with the only exception of five marble pieces. Different hypothesis on the origin of these marbles have previously been proposed based on visual assessment or by directly assuming a local source. To shed light on their quarry provenance, a multi-analytical study was performed combining polarized-light optical microscopy, cathodoluminescence microscopy, XRPD, SEM-EDS and stable C and O isotopes. The comparison of the results with the available databases reveals the use of marbles from the Estremoz Anticline (Portugal) in the three exquisitely carved columns strategically placed in the central arcade, whereas the other two pieces are local marbles, illustrating a more complex consumption of this noble material than that initially expected.  相似文献   
470.
正Eagles soar overhead in April.Snowcovered Mt.Droda stands firm,and the Yarlung Tsangpo River is bordered by lovely,green farms.Willows sprout with tender shoots along the river bank.The entire plateau is peaceful.Garze in Tibetan refers to the beauty  相似文献   
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