Experimental Characterization of Ancient Metal Tie-Rods in Historic Masonry Buildings

Metal tie-rods play a decisive role in the control of horizontal thrusts in historic masonry buildings. The main goal of the present study is to investigate the relationship between metallurgical and mechanical properties of original tie-rods in order to contribute to a wider study on ancient building stability and their restoration protocols. This article presents the results of an experimental test campaign carried out on 14 historic tie-rods (dating back from 16^th–19^th century) recovered from restoration works or building demolitions. Stress-strain mechanical tests showed that the elastic modulus of the material is comparable to that of modern structural steel, while the strength and the elongation capability are significantly lower, with a large scatter. Further analyses based on metallography allowed us to assess that this mechanical behavior depends on the heterogeneous nature of the material, which can eventually be compared to a composite with vitreous elongated particles in a ferritic or ferrito-pearlitic matrix. The origin of such metallurgical condition is related to the iron making based on direct smelting from ores.     

3D Digital Survey of Iron Tie-Rods in Masonry Buildings: Cross-Sections Analysis and Error Estimation

Ancient iron tie-rods are handcrafted elements with large geometric irregularities, due to production techniques (they are shaped by hammering and linked by hot-forging) and corrosion processes. In common practice, their cross section (that is one of the main parameter to assess their strength) is manually measured on site with a manual caliber. By analyzing a set of detailed three-dimensional (3D) digital surveys of real ancient tie-rods, this study provide an evaluation of the errors made by in-situ manual geometric measurements. In particular, it shows that, in some cases, manual on-site survey is sufficiently reliable and has errors that fall below 10%. Moreover, it shows that when tie-rods have high corrosion levels in hidden zones (typically those close or within the retaining walls) the on-site survey of visible parts only may produce far greater errors that exceed 100%, leading to a strong overestimation of the cross-section of the tie. The ongoing study is a first step toward the definition of correction coefficients to be applied to the on-site manual measurements of ancient tie-rods, with the final aim to improve the reliability of structural analyses.     

The Jewish Communities of Central Asia in the Medieval and Early Modern Periods

When the Jews first settled in Central Asia is uncertain, but circumstantial evidence clearly indicates that this happened at least two and a half thousand years ago. In the first millennium AD, the Jews lived only in cities no farther than 750?km east of the Caspian sea (in the eighth–eleventh centuries the sea was called Khazarian). Only later did they migrate to the central part of the region, to cities like Samarkand and Bukhara. It is possible that Jews from Khazaria joined them, since they already had tight trade connections with Central Asia and China. There is no trace of evidence regarding the existence of Jews in the entirety of Central Asia in the early sixteenth century. At the very end of the sixteenth century Bukhara became the new ethnoreligious center of the Jews in that region. In the first half of the nineteenth century, thanks to European travelers visiting Central Asia at that time, the term “Bukharan Jews” was assigned to this sub-ethnic Jewish group. Drawing on a wide range of primary and secondary source materials, this article aims to prove that the presence of Jews in Central Asia was not continuous, and therefore the modern Bukharan Jews are not descendants of the first Jewish settlers there. It also attempts to determine where Central Asia’s first Jewish population disappeared to.     

Protective Structures for the Preservation of Medieval Buildings and their Remains: Case Studies from Monastery Hilandar and Mount Athos

The objective of this study is to establish a methodology for temporary protective structures, that is, the guidelines for planning, design, and implementation of future protective structures. The basic method of this paper was the observation and analyses of temporary protective structures as well as the evaluation of the results achieved in implementation of these rules in completed structures, within the Hilandar Monastery complex on Mount Athos, in Greece. Mount Athos was inscribed on the UNESCO World Heritage List for its cultural and natural values. The Holy Mount Athos is a unique monastic complex in the world and only males are allowed past the entrance. Having performed the evaluation of certain types of temporary protective structures, the given results were offered as recommendation for their design and implementation. The most significant accomplishment of this paper is verification of the designed, calculated, and completed protective structures through practical application within the Hilandar Monastery complex, in accordance with all the factors of site management.     

试析河南汉墓出土陶仓楼的分期及区域特征

本文在陶仓楼类型划分基础上,认为河南汉墓出土的陶仓楼至西汉晚期在豫中地区首先出现,为二层带腰檐建筑.西汉末至东汉早期此型陶仓楼向高层发展,区域由豫中扩展到豫北地区.东汉早期豫西、豫西南地区出现二层无腰檐陶仓楼.这时期河南陶仓楼数量和式样增多,分布范围广泛.东汉中期为陶仓楼繁荣期,豫北地区出现带附楼的院落式陶仓楼.东汉晚期各区域陶仓楼走向衰落.     

Disciplining Memory: Heritage Tourism and the Temporalisation of the Built Environment in Rural France

This article presents an ethnographic case study of the relationship between the development of heritage tourism, and the role of material culture in memory practices in rural Southern France. Drawing on anthropological fieldwork in the village of Monadières, it provides an analysis of how artefacts in the locality's built environment have been renovated and revalued in a climate of historical change. This was the consequence of varied acts of commemoration by both independent individuals and the local council in which heritage tourism development was not necessarily the end‐goal. Nevertheless, these acts were implicated in the council's ‘disciplinary programme’ to produce a local infrastructure for heritage tourism. The article therefore explores how this industry co‐habits with and colonises modern memory practices at a micro‐level. To this end it adapts analytical tools from the anthropology of time, which enable an integrative analysis of these differing ‘temporalisations’ of the past.     

中世纪和近代早期英格兰敞田经营制度再认识

大村庄的定居方式是中世纪英国平原开阔地带盛行敞田经营制度的重要原因。在中世纪和近代早期的生产力水平下,敞田经营制度是一种有效率的产权安排,并且还具有分散风险的作用。近代早期虽然出现了圈地,并且从长期来看它确实促进了农业生产力的大幅度增长,但敞田经营制度并没有成为当时农业进步的障碍。     

Study of stafne's defects in Late Neolithic,Late Roman,Medieval and Modern skeletal samples from Portugal

Lingual mandibular cortical defects (Stafne's defects) are relatively uncommon in recent as well as past populations, but while this condition is often discussed in clinical reports, they are rarely the subject of anthropological research. In this paper, the prevalence of Stafne's bone defects in skeletal samples from Late Neolithic, Late Roman, Medieval and Modern Portugal is investigated (N = 704 complete mandibles and 111 incomplete mandibles). The aims of this paper are threefold: (1) to present and analyse for the first time in Portuguese osteological record prevalence data on Stafne's bone defect, (2) to analyse variations in defect prevalence between skeletal samples from a wide temporal array and (3) to verify if more tenuous lesions in which resorption of the lingual cortex was not yet extensive had the classic radiographic appearance described by Stafne in order to validate the hypothesis that lesions are present clinically in many more cases than published figures indicate. In all cases, differential diagnosis against other conditions that mimic Stafne's defects, namely odontogenic lesions, cysts and neoplasms, was done. In all samples, the evidence of Stafne's defect occurred in 12 individuals (1.7%), and males (2.84%) were more frequently affected than females (0.61%). When incomplete mandibles were considered, only one left fragment (0.90%) exhibited Stafne's defect. Accurate identification of all examples of Stafne's bone defects in antiquity is thought to represent an important contribution to elucidate which factors may be responsible for this trait's cultural, ecological, temporal and geographical patterning. Copyright © 2010 John Wiley & Sons, Ltd.     

Humerus Varus in a Subadult Skeleton from the Medieval Graveyard of La Madeleine (Orléans,France)

The skeleton of a subadult individual from the medieval graveyard of La Madeleine (Orléans, France) exhibits varus deformity of its right humerus. The affected bone is shortened, the diaphysis is angulated and the head is grossly deformed. The skeleton is otherwise normal. Several diagnoses are debated, including mucopolysaccharidoses, thalassemia, infection and trauma, the latter being preferred. The severity of the bone changes suggests that the growth disturbance occurred early in the life of the individual. We therefore suppose that the causative trauma occurred at the time of birth or during the early postnatal period. Copyright © 2011 John Wiley & Sons, Ltd.     

广州南越国宫署遗址东晋南朝的铁甲和皮甲

2004～2006年,广州市文物考古研究所、中国社会科学院考古研究所和南越王宫博物馆筹建处组成的考古队在南越国宫署遗址的两口水井内清理出东晋南朝时期的铁甲和皮甲各1件,铁甲有53片形状不同的甲片,皮甲应为马甲上的胸甲。这类铠甲的出土在岭南属首次发现,同时也填补了这一时期铠甲资料的欠缺。     

台州府城墙突出普遍价值及军事遗产类型研究

在历史研究的基础上,认为台州府城墙符合世界遗产标准的第Ⅱ、Ⅳ条,并对突出普遍价值进行综述。按照地域、功能、文化等标准,将《世界遗产名录》中的军事遗产分为边墙、城墙、城堡、要塞和军事基地五种类型,并与台州府城墙进行比较研究。最终,对台州府城墙申报世界遗产的优势和劣势进行分析并提出策略。     

Characterization and damage assessment of stones used in the Pasargadae World Heritage Site,Achaemenian period

The architectural remains at Pasargadae were built of three different stones classified according to their colors (beige, dark-gray, and green-gray). The stones show different macroscopic features, such as texture and decay patterns. The aim of this study is to identify the composition of the stones and to evaluate the main decay factors through petrographic studies in order to make conservation decisions more compatible. Petrochemical analyses show that the stones are in fact limestones with different features; two of them have a compact texture (beige and dark-gray stones), while the third has a fairly porous structure (green-gray stone). In some beige stone samples, dolomite was identified. Despite the fact that the presence of salt is a possible decay factor, X-ray diffraction analysis did not report any salt. According to SEM observations, the main reasons for decay in dark-gray and green-gray stones are the dissolution of calcite crystals and the swelling of clay minerals. The main decay factor in the beige stone, by contrast, is dissolution induced by microorganism activity. However, a patina formed by lichens on the surface of the beige stone, although aesthetically detrimental, protects it against further decay.     

南通近代建筑的历史地位和形成特点

南通是中国近代早期的工业基地之一,曾以模范县的美誉闻名于世。南通近代建筑是随着工商业兴起的,它是南通人依靠自己的力量,学习和吸收西方建筑艺术所形成的,在中国近代建筑史上占有一定的地位。南通近代建筑的形成有鲜明的特点,保护好这些建筑,有十分重要的意义。     

Stable isotope palaeodietary study of humans and fauna from the multi-period (Iron Age,Viking and Late Medieval) site of Newark Bay,Orkney

We report here on stable carbon and nitrogen isotope measurements of human and faunal bone collagen from the Iron Age, Viking Age, and Late Medieval site of Newark Bay, Orkney, Scotland. We found a wide range of results for humans in both δ¹³C (−15.4‰ to −20.3‰) and δ¹⁵N (8.6‰–15.6‰) values. The enriched carbon and nitrogen values indicate the consumption of significant amounts of marine protein, which is very unusual for post-Mesolithic (e.g. 4000 cal BC) UK and European populations. Also of interest is a statistically significant difference in δ¹³C (t = −2.48, p = 0.011) and δ¹⁵N (t = −2.44, p = 0.011) values, and therefore diets, between adult males and females at this site, with males (δ¹³C = −17.8 ± 1.2‰, δ¹⁵N = 13.2 ± 1.6‰) having, on average, a higher proportion of marine protein than females (δ¹³C = −18.9 ± 1.1‰, δ¹⁵N = 11.8 ± 1.8‰). The weaning age of the sub-adults was difficult to interpret due to the large isotopic variation in the adult females, but nearly all individuals between birth and 1.25 years have elevated δ¹⁵N values indicating that they were breastfed to some extent.     

A Preliminary Study on the Loss of Iron and Arsenic in the Re‐Melting of Iron‐Bearing Arsenical Copper

Re‐melting experiments were conducted with specimens made of high‐arsenic copper alloys containing lead, iron and sulphur. The melting treatment at 1000°C in ambient conditions for 5 min was found to cause an almost complete removal of iron and sulphur along with a notable reduction of arsenic levels. Evidence was found that the preferential oxidation of iron and arsenic was responsible for this change in composition. The treatment also brought about perfect dissolution of speiss particles scattered throughout the original specimen, suggesting the possibility of the addition of speiss to molten copper for the production of arsenical copper.     

Physical Characterization,Microstructural Evaluation,and Condition Assessment of Ancient Ahlat Tombstones in the Seljukian Cemetery of Ahlat (Turkey)

A typical Seljukian town of Ahlat, located between the north-western shores of the Lake Van and the Nemrud and Suphan volcanoes of the Eastern Turkey is hosting rich and colorful cultural heritage sites. Among these, famous Seljukian Cemetery is a major archeological district with monumental tombstones (stelae). Excessive deterioration, erosion and lichen colonization can be observed in these cultural artifacts. The main objective of this study is the investigation of stones’ physical characterization and evaluation of the microstructural features. A degradation model was outlined starting with the capillary water uptake from the bottom section and lichen colonization starting from the top and covering these tombstones upto their mid sections. This article provides some information about the historical town of Ahlat and its tombstones. Some physical and microstructural characterization of the gravestones and the results of chemical and physical analysis are also presented along with some recommendations.     

The Changing Exploitation of Oysters (Ostrea edulis L. 1758) in Late Medieval and Early Modern England: A Case Study from Dudley Castle,West Midlands

ABSTRACT

Analysis of over 4000 complete left oyster valves from late medieval and post-medieval Dudley Castle reveals the changing role of this perishable luxury over a 700-year period. Throughout the occupation, it seems that oysters were used as ingredients rather than served raw in the shell. A greater reliance on oyster consumption is apparent in the later fourteenth century, perhaps reflecting a more diverse diet amongst the aristocracy in the wake of the Black Death. An increased preference for mussels and whelks is also attested in the Tudor and early modern periods, reflecting changing perceptions of these foods.

Overall, it is likely that natural beds were exploited throughout the time that oysters were being brought to Dudley Castle; however, the evidence demonstrates a shift from limited exploitation of natural inter-tidal sources in the eleventh century towards the dredging of sub-littoral beds in later periods, with some possible translocation of oyster stock. Changes in the shape, size and appearance of the oyster shells suggest the source locales from which the oysters derived changed through time. A notable shift occurred in the fourteenth century, which could reflect changes in supply brought about by altered tenancy at Dudley Castle and/or disruptions to trade brought about by the Black Death. Future biochemical analyses are recommended to provide greater clarity on the origin of those sources.     

淅川春秋楚墓铜禁失蜡铸造法的工艺探讨

详细考察和分析出土铜禁时发现,铜禁体、附兽的头花和尾花、足兽的头花等均为失蜡法铸造,禁体共分25块,逐块制作。各块的透空立体花纹,是由框梗、拱梗、直梗、花梗、撑梗、连纹梗组成,各块蜡模制作后熔接成完整禁体。各蜡模制成后、浇灌范料成为模壳,烘培模壳,蜡料熔失,乘热浇注铜液。附兽身和舌、足兽身和舌是范铸。头花、尾花与兽的组合,兽与禁体的组合,全采用钎焊法。     

中国边疆地区汉代以后古人骨的研究

近年来,在新疆、辽宁、吉林、黑龙江、青海和内蒙古等地出土了一些有关古代车师、鲜卑、高句丽、渤海、吐蕃和契丹等族的人骨资料。吉林大学边疆考古研究中心承担的教育部人文社会科学重点研究基地重大项目课题组对这些古人骨资料进行了体质人类学和分子考古学研究,取得了一批重要的学术成果,填补了多项该领域学术研究的空白。     

The Neronian and the historical structure of cultural shifts from Middle to Upper Palaeolithic in Mediterranean France

The end of the Middle Palaeolithic period can be considered a key moment in the history of humanity, characterized by profound changes in traditional Palaeolithic societies. Whatever the reasons for this historical change, it seems well established that it took place within a particularly dynamic phase of these societies, when Upper Palaeolithic technical processes were already emerging. The analysis of recent Mousterian industries in Mediterranean France highlights certain points of inflection, which presage new ways of life. The analysis of key sites demonstrates important transformations within the last Neanderthal societies, with a gradual rearticulation of Mousterian technical systems around the production of blades and points and with profound changes in the relationship of the craftsman with his tools. Even if they are typical of the late Mousterian more generally, these technically distinctive industries have such distinct chronological, territorial and cultural characteristics that they can be referred to by a specific name, the “Néronien” (Neronian). Stratigraphically speaking, this group of assemblages – at the crossroads of the Middle and Upper Palaeolithic – appears in some important regional sequences just before the appearance of the first “true” Upper Palaeolithic industries (the Protoaurignacian). However, this Neronian doesn't represent the end of the Middle Palaeolithic period in the Rhône valley. The final Moustérien of this region is actually marked by deep breakdowns of the traditional balances in the human groups. This second point of inflection could characterize a true destabilization of Mousterian societies. There is an interesting parallelism between the historical paths of the Castelperronian in the arch of the Massif Central and the Neronian in the Rhône valley. It also highlights the mosaic nature of the profound cultural changes that occurred at the end of the Middle Palaeolithic.