Effect of mollusc eating on human bone strontium levels

Empirical aspects of the movement of strontium through the food chain suggest that the level of bone strontium can be used as an indicator of the percentage of meat in human diet. In general, skeletal remains from agricultural peoples are expected to have high bone strontium levels relative to hunter-gatherers from the same geographical region because plants contain relatively higher amounts of strontium when compared with animal products. The results of the study described in this paper, however, indicate that the inclusion of molluscs as a component of the diet may produce the opposite of the expected strontium values. Burials from an Archaic (c. 2500 BC) hunting-gathering population excavated from Lu^o25, an archaeological site in northern Alabama, USA, exhibit a mean bone strontium level ( atomic absorption; neutron activation) that is higher than the mean level from an agricultural Mississippian (c. AD 1400) population ( atomic absorption; neutron activation) that was buried at the same site. The samples were analysed by two techniques (atomic absorption spectrometry and neutron activation analysis) and the results compared favourably; therefore, the results can be accepted as valid rather than being due to technique error. We propose that the ingestion of molluscs, whose meat is known to contain large amounts of strontium, has produced this reversal from expected results.     

Pushed into Pragmatism: British Approaches to Science in Post-War Occupied Germany

One of the most important dilemmas facing the British authorities when they occupied their zone of Germany at the end of the Second World War was what to do with German science. The contributions made by scientists and engineers to the Nazi war machine, in fields such as rocketry and submarines, meant that German science was both revered and feared, and was therefore closely linked to concerns about a post-war military resurgence in Germany. This article aims to chart the changing approaches which the British occupation officials adopted towards German science in this period. While the initial intention was to prevent Germany from ever waging war again, through demilitarisation, denazification and dismantling, the focus changed as British enmity shifted from a former adversary, Germany, to a former ally, the Soviet Union. Policy reflected this shift as technology transfer and the reconstruction of domestic German science won greater favour. This article aims to show that, in the face of growing hostility from the USSR and in the deeply suspicious climate of the early Cold War, Britain was forced to abandon its moral mission towards German science and adopt a far more pragmatic strategy instead.     

Coast–inland mobility and diet in the Danish Mesolithic and Neolithic: evidence from stable isotope values of humans and dogs

Here we present the stable isotope ratios of carbon and nitrogen measured in bone collagen extracted from humans, dogs, herbivores and fish from Mesolithic and Neolithic coastal and inland sites in Denmark. Bones of freshwater fish from several Early Mesolithic lake-side sites have δ¹³C values surprisingly similar to those seen in marine fish. We propose a model, based on δ¹³C and δ¹⁵N, for the correction for both marine and hard water reservoir effect in radiocarbon dates. A strong reliance on aquatic protein is demonstrated for the Mesolithic inhabitants of the region from the middle of the Early Mesolithic onwards. A significant part of the protein in the diets of the dogs and humans from the Middle and Late Mesolithic was of marine origin, even at inland sites. This observation points to a high degree of (seasonal) coast-inland mobility. The isotopic evidence indicates that during the Neolithic small quantities of aquatic foods were still common sources of dietary protein.     

山地聚落历史人口的重建:以近三百年云南峨山沿河村为例

重建山地聚落人口变化的时空过程对认识历史时期人口发展有重要意义。本文以西南山地聚落沿河村为例,以田野调查资料为主,辅以历史文献和档案,利用估算户数和户均口数的方法重建了沿河村近三百年的人口变化过程。户数以某一时点占主导的世代可婚男子数作为代用指标进行折算;户均口数使用家庭结构模型,以流域内多个聚落人口的婚姻、生育和死亡数据推算出时段上的平均值,再通过1953年流域人口的年龄构成和多个聚落的户均子女和老人数得到平均值作为经验值,代入1920年之前户均口数的重建中,得到长时序的户均口数。重建结果通过对比检验,表明该方法能较好地重建历史时期山地聚落代际分辨率的人口序列。分析发现,该山地聚落人口变化具有大起大落和阶段性发展的特征,且大落的速度比大起的速度快。     

Socio-economic status and religious identity in medieval Iberia: The zooarchaeological evidence

This paper synthesises faunal data from medieval archaeological sites in the Iberian Peninsula, aiming to identify zooarchaeological evidence that can improve our understanding of socio-economic status and cultural identities. The main zooarchaeological indicators for social differentiation are explored: food procurement and cuisine (taking into account different types of sites – high status, urban and rural), and different socio-political systems (Islamic and Christian regions), from a diachronic perspective.     

山西省万荣县寿圣寺塔的多视角影像三维重建

为了制定山西省万荣县寿圣寺塔的保护规划方案,需制作具有真实纹理的三维模型,但砖塔等大型不可移动文物的三维重建难度很大,制作成本一直很高。为此,本研究运用无人机拍摄和地面拍摄多视角影像的技术,制作寿圣寺塔的三维模型,生成各个立面的正射影像图,量算砖塔的高度、宽度等尺寸数据,为这类文物的三维重建提供一种新的技术和方法。     

基于海量点云数据的大雁塔三维重建

古建筑三维重建已成为历史遗迹保护与修复的重要内容。为了探讨三维激光扫描数据的获取流程、数据处理方法,以三维激光扫描获取的大雁塔海量点云数据为例,研究了古建筑三维重建中点云数据获取与处理的详细过程。联合Cyclone、AutoCAD和3D-Max软件的优点构建了大雁塔真实的横面、剖面、立面模型,其中重点研究了海量点云数据在Cyclone软件中分块建模的方法。结果表明:将拼接好的大雁塔海量点云数据分块建模,不仅加快了数据处理的速度,而且符合精度要求。在点云数据拼接时采用标靶拼接和同名点拼接相结合及测站间两两拼接之后再整体拟合平差的方法,减少了拼接中的误差,使每站拼接误差都不超过3cm。在建模过程中的墙体拟合是上万个点云经过平差计算得到,精度高达2mm。最后在3D-Max软件中组合、渲染和贴图,真实地构建了大雁塔三维立体模型。为古建筑数字化存档和后期的修缮工作提供了重要的依据。     

The Dover Boat—a Reconstruction Case-Study

The Bronze-Age Dover boat, reconstructed and published by Owain Roberts in 2004, is discussed in regard to the general considerations of reconstructing ancient boat structures in the previous paper. The archaeological evidence shows that the boat had a bottom shape different from that shown in the 2004 reconstruction, and various other aspects, such as the general shape and strength of the hull and the calculation of potential speed when paddled, are questioned, partly drawing on the author's experience with the reconstruction of the Hjortspring boat. A re-assessment of the evidence is called for before any attempts to build a full-scale version of the Dover boat for sea-trials.
© 2006 The Author