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A total of 51 ancient oak wood samples originating from various European archaeological sites, dating from the Neolithic period to the 18th century, were assayed for the presence of reproducible chloroplast (cp) DNA sequences. Five polymorphic chloroplast fragments were targeted. Only five of the samples could be fully genetically characterised, revealing four different oak cpDNA haplotypes. In all cases, the haplotypes detected on ancient woods and the haplotypes characterised from fresh samples from the same localities matched. Overall, this congruence is consistent with a genetic continuity between ancient and modern European oaks, confirming the hypothesis that the mapped genetic patterns largely reflect the original structure that established during the post-glacial. This stability of the genetic structure implies that, in the future, the technique could be used to infer or confirm the transport of wood by man, providing interesting perspectives for the genetic analysis of ancient woods.  相似文献   
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Howden Church     
Shrewsbury's late sixteenth-century Old Market Hall—recently restored and returned to public use—is among the most prominent buildings in the town centre and, or so it would seem, a reminder of the town's pre-eminence as a marketing centre in the central Marches in the early modern period. Combining documentary evidence, archaeology, and the evidence of the building itself, this inter-disciplinary study sets out to examine the real reasons for the Hall's construction, how it was built, and the way in which it functioned. The paper also looks backwards to the growth of marketing in this part of Shrewsbury in the thirteenth century, and its promotion by considerable civic investment in the 1260s when a new market square was created from what was previously a wet wasteland. Looking forward, it tells the story of the Hall's use in the post- medieval period, and of past attempts to deal with inherent structural defects in the original design.  相似文献   
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Following the 1975 revolution, the Laotian statesmen adopted a modernising discourse that targeted “backward” traditions as undesirable. But since the 1990s, authorities have mitigated this standpoint, distinguishing “good” from “bad” traditions according to their compatibility with the program of national development, and professing their will to (re)instate the former as suitable expressions of culture in a multi-ethnic nation. This is manifest everywhere from the National Constitution to TV shows and ethnic catalogues. This paper analyses the implementation of these principles through the case of the boun greh New Year festival, an invented ethnic tradition of the Khmou, the largest ethnic minority in Laos. The article demonstrates that this implementation has consequentially implied the adoption of a grammar of national ethnicity; that this official framework paradoxically allows the Khmou to articulate demands for better recognition of their group; and that this process does not mute expressions of “cultural intimacy” at variance with this matrix. The official frame of ethnicity has been eventually adopted by the Khmou, but this state effect has multiplied the layers of expressed ethnicity: it cannot be equated with a unilateral regimentation that would deprive the Khmou of their agency.  相似文献   
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