Investigations on pre-treatment prior to freeze-drying of archaeological pine wood with abnormal shrinkage anisotropy

The current research is aimed at determining the nature of changes in the dimensions and hygroscopicity of archaeological Scots pine (Pinus sylvestris L.) wood after treatment with polyethylene glycols and vacuum freeze-drying. The research was undertaken on mature sapwood with narrow annual rings and a small percentage of latewood. The experimental material used in a comparative assessment is characterised by a considerable degree of wood degradation, but low tangential and radial shrinkage and relatively high longitudinal shrinkage. The waterlogged samples were treated with aqueous solutions of PEG 300 with final concentrations: 8, 12, 16 and 20% (v/v), to which PEG 4000 with final concentration: 15, 20 and 25% (w/v) was added. After freeze-drying and seasoning of samples in the air at RH 30, 40, 50 and 65%, the water content of the samples and the degree of shrinkage of wood in three anatomical directions were determined. The dimensional stability of the samples was also determined on the basis of ASE values at RH 50%.     

奈达“功能对等”理论下考古发掘报告的翻译

考古发掘报告是中西方考古界交流的重要途径之一,故使其英译为外国学者理解、接受就成为译者主要的翻译目的。一、功能对等的翻译理论尤金.奈达(Eugene A.Nida)认为翻译是跨语言、跨文化的交际活动。目的是使交际各方     

The implications of water storage for human settlement in Mediterranean waterless islands: The example of Pantelleria

Abstract

Consistent water supply is a common issue in the history of Mediterranean civilizations, where hydraulic solutions, such as cisterns, wells, reservoirs and aqueducts, were adopted for private and public supply. In this context, the island of Pantelleria, where surface freshwater is virtually non-existent, represents a unique case for understanding human–environment interaction in waterless environments. Here, in historical times, year-round water supply was only possible through the storage of rainwater in underground cisterns. An intensive field survey carried out across the island led to the discovery of hundreds of cisterns dated from the Punic and Roman periods to the present day. The study of the spatial distribution of the cisterns was compared with archaeological data on the island to gain new insights on historical settlement and demographic patterns. The present work focusses on a semi-quantitative assessment of water storage on the island of Pantelleria based on the evaluation of potential volumes of stored water for different periods. Data available for cisterns in Pantelleria have been analysed and compared with those from coeval Mediterranean regions. Calculations on the seasonal fluctuation between water demand and supply have been estimated to evaluate the efficiency of such system for sustaining human population and subsistence activities through time.     

河南灵宝市五帝遗址考古勘探报告

2018年11月~12月,为从聚落层面对灵宝盆地仰韶文化时期大型遗址开展研究,河南省文物考古研究院等单位对灵宝五帝遗址进行了系统调查与勘探。结果表明,该遗址主体是一处仰韶文化中期大型聚落,南部有一条南壕沟,并发现一定数量的房址、灰坑,总面积约75万平方米。在遗址东北部还发现有庙底沟二期文化时期遗存。另外,调查发现该遗址附近有古湖相沉积,对研究该区域古环境变迁具有重要价值。     

综合地球物理方法在晋阳古城墙遗址勘测中的应用研究

为探明晋阳古城不同赋存类型城墙遗址的地球物理特征及遗存状态,研究综合地球物理方法勘查古城墙的有效性及最优组合方案,为此采用磁法、高密度电阻率法、探地雷达法、γ能谱法对晋阳古城三种不同类型的古城墙进行了勘查;结合二维及三维的数据处理方法及显示手段对城墙遗址进行定性及定量描述;探讨多方法勘查成果的集成解释方案,并在此基础上总结出了不同类型城墙遗址的地球物理模型及相应的最优勘查方法组合:对西城墙,采用高密度电阻率法和探地雷达法;对东南城墙,采用磁法和高密度电阻率法;对北城墙,采用高密度电阻率法和探地雷达法。本研究结果可为晋阳古城遗址下一步的开发保护工作提供技术依据,也可为同类探测工作的开展提供指导作用。     

山东龙口市归城两周城址调查简报

山东龙口市归城遗址是胶东地区重要的周代城址,曾出土包括启尊、启卣,以及黄县■器等在内的重要青铜器[1],为学术界所重视。归城遗址也是胶东地区青铜时代规模最大、内涵最为丰富的一处城址,对它的系统研究可以对胶东地区古代文明和国家形     

铁器文物保护中锈层化学稳定转化的研究

出土铁器文物在脱盐清洗后,运用化学稳定转化处理的方法将表面不稳定的铁锈转化成稳定、致密的锈层,然后进行钝化封闭,提高耐蚀性,最后进行防锈封护和表面消光处理。通过各种腐蚀性能测试,证明耐腐蚀性能有显著提高,综合处理的结果达到了文物铁器的保护要求。     

古陶瓷的成分测定,数据处理和考古解释

化学组成测定是古陶瓷科学研究的基础。作根据亲身实践,对几种常用的,或有发展前景的陶瓷化学组成的测量方法作了综评,定量地估计了它们的灵敏度,精密度和准确度。本还对古陶瓷化学组成数据多元统计处理中变量和样品的选择和舍弃,数据处理结果的表述,特别是作考古推论中的某些问题进行了探讨。     

饱水古木材难溶盐分析

为研究饱水古木材中难溶盐的成分和分布,基于电感耦合等离子体光谱、X射线衍射以及显微共聚焦激光拉曼等分析手段对出土出水饱水古木材表面和纵向横向不同取样深度的元素含量和分布、表面凝结物以及纵向横向切面颗粒物的物相进行了分析。分析结果表明饱水古木材含有大量的Fe、S和Ca元素,包含这三种元素的凝结物主要由难溶盐和不溶物组成。难溶盐主要分为两大类,一类为钙盐(包括硫酸盐、碳酸盐和磷酸盐等),一类为硫铁化合物(包括硫铁矿、黄铁矿、磁黄铁矿等);不溶物包括各类铁氧化物(如针铁矿、纤铁矿、赤铁矿和水合氧化铁)以及硫单质等。难溶盐分析结果有助于有针对性地对饱水古木材难溶盐尤其是对古木材危害比较大难溶盐进行预防控制和有效脱除。