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91.
Much has been written on the use of lead and copper sheathing in post mediaeval shipbuilding, yet evidence for such hull protection by Dutch shipwrights in the 17th and 18th centuries has received little attention. A discussion of the archaeological and historical evidence pertaining to the application of copper and lead sheathing by the Dutch long‐distance trading companies outlines the argument for the innovative character, experimental use—on ships’ hulls—and standardization—on sternposts—as early as 1602. Archaeological evidence presented mainly comes from the Dutch East Indiamen Nassau (1606), Mauritius (1609), Batavia (1629), Vergulde Draak (1656), and Buitenzorg (1760).  相似文献   
92.
This article provides a summary and analysis of current knowledge of the archaeological remains of the 64 sewn boats that have been excavated in the Mediterranean region, dating from the Bronze Age to the Medieval periods. A detailed examination of the construction techniques, particularly the methods used to assemble and seal sewn planks and the systems used for lashing frames to the planking, has enabled six distinct construction traditions to be distinguished within the sewn‐boat assemblage. Phases within these traditions are examined, alongside transitions to mortise‐and‐tenon fasteners, and explanations for the longevity of sewn techniques in specific regions are suggested.  相似文献   
93.
Seventeenth‐century opaque red (redwood) glass trade beads of different shapes and sizes were made of mixed alkali (mainly soda)–lime glasses and were coloured with Cu, presumably as cuprous oxide or as finely dispersed elemental Cu. During the early 17th century, beads of all shapes were opacified with Sn; cored beads, with uncoloured cores and hence lower Cu levels, also tended to have slightly lower Sn contents than uncored beads. By the mid‐17th century, cored tubular beads were being opacified with a combination of Sn and Sb, a technological change similar to that observed in white glass trade beads, while uncored redwood beads appear not to have been opacified with either Sn or Sb. Bead chemistries are sufficiently different to allow them to be sorted into subgroups, which may then be tracked in various archaeological sites and regions.  相似文献   
94.
Salvage excavations conducted in the Yenikap? quarter of the historic peninsula of Istanbul by the Istanbul Archaeological Museums 2004–2013 have brought to light the Theodosian Harbour on the Sea of Marmara. In addition to thousands of archaeological artefacts, a total of 37 shipwrecks dating from the 5th to the 11th centuries AD were uncovered, constituting the biggest collection of medieval ships uncovered at a single excavation site. The present article deals with 27 wrecks in the charge of the team from Istanbul University's Department of Conservation of Marine Archaeological Objects, consisting of 23 merchantmen and four galleys. The wrecks are presented with their general characteristics. The preliminary evidence from the Yenikap? wrecks regarding the development from shell‐based to skeleton‐based philosophy is discussed, and various building phases presented.  相似文献   
95.
The objects recovered from the Swan have already been the subject of a number of publications. The aim of this article is to provide an in-depth study of the pocket-watch, using Three Dimensional Computed Tomography (3D-CT) X-ray scanning. The structural information that survived exceeded expectations and made a virtual reconstruction of the mechanism possible. The very high resolution provided by the scan enabled the engraving of the maker's name to be visualised and confirmed the date of the watch.
© 2009 The Authors  相似文献   
96.
Yenikap? 14 (YK 14) is one of 37 shipwrecks discovered by the Istanbul Archaeological Museums during the Marmaray Project excavations in Istanbul's Yenikap? neighbourhood, the site of Constantinople's Theodosian Harbour. Dated to the 9th century AD, YK 14 is one of a group of Yenikap? round ships constructed using similar methods: it was a flat‐floored, shallow‐draught vessel built primarily of oak using a distinctive combination of shell‐ and skeleton‐based construction methods. Regularly spaced pegs called coaks were used to assemble the hull planking edge‐to‐edge from the keel to the first wale, above which planks were fastened exclusively to frames.  相似文献   
97.
Intentional dental modifications are alterations of teeth usually performed as a ritual for aesthetic or identity purposes. However, the execution of the technique is not exempt from risk and can be related to a higher prevalence of dental pathology, more specifically through the exposure of the dental pulp and consequent periapical inflammation. With the aim of analysing the relationship between intentional dental modifications and periapical inflammation, the current study evaluated 81 skeletons (49 women, 19 men, and 13 individuals of unknown sex) of enslaved Africans from Lagos, Portugal (15th–17th centuries), of which 50 (61.7%) had intentionally modified teeth. In all, 2285 sockets and 2063 teeth were observed. Two hundred and three intentionally modified anterior teeth (27.2%) were identified. Twenty five individuals (30.9%) and 54 teeth (25 anterior and 29 posterior) showed macroscopic evidences of periapical lesions. In the anterior dentition, intentional modification was identified as the probable aetiology of 17 (68.0%) periapical lesions, mostly granulomata or cysts, but also abscesses. The association between intentional modifications of the dentition and the presence of periapical lesions was found in both the maxilla and mandible. These results suggest that this cultural practice can predispose teeth to periapical inflammation, which may cause pain and sensitivity to cold, heat, and pressure, and probably had a negative impact on the quality of life of these individuals. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
98.
The Shurmai (GnJm1) and Kakwa Lelash (GnJm2) rockshelters are located in the Mukogodo Hills region of north-central Kenya. Sondages excavated at both sites allow preliminary reconstruction of their geological and archaeological histories. A total of 4782 lithic pieces were recovered from Shurmai, and 7862 from Kakwa Lelash. The earliest materials from Shurmai date to the late African Middle Stone Age (sometime before ca. 40,000 years bp), and those from Kakwa Lelash apparently date to the African Later Stone Age (sometime after ca. 40,000 bp). The raw material composition, technomorphological characteristics, and style of assemblages from these sites do not reveal whether modern human behavior emerged first in the Middle or in the Later Stone Age. However, the greater sophistication, systematization and efficiency evident in the patterns of resource use, tool manufacture, and style in the Later Stone Age components at Shurmai and Kakwa Lelash rockshelters is consistent with the view that the origins of modern human behavior are to be found in the Later, rather than the Middle, Stone Age in Africa.Les abris de Shurmai (GnJm1) et Kakwa Lelash (GnJm2) sont situés dans la région de collines de Mukogodo du Kenya nord-central. Les sondages creusés aux deux sites permettent la reconstruction préliminaire de leurs histoires géologiques et archéologiques. Un total de 4782 objets lithiques étaient récupérés de Shurmai, et 7862 à Kakwa Lelash. Les matériaux les plus tôt de Shurmai datent au fin de l'Age de la Pierre Moyen d'Afrique (avant ca. 40,000 ans avant le présent), et ceux de Kakwa Lelash datent apparemment au l'Age de la Pierre Récent d'Afrique (après ca. 40,000 ans avant le présent). La composition de matière première, les caractéristiques techno-morphologiques et le modèle des assemblages de ces sites ne révéle pas si le comportement moderne humain a émergé d'abord dans l'Age de la Pierre Moyen ou Récent. Cependant, la plus grand sophistication, systématisation et efficacité évident dans les configurations de l'utilisation de la ressource et dans la fabrication et style des outils de l'Age de la Pierre Récent des abris de Shurmai et Kakwa Lelash se conforme avec l'opinion que les origines de comportement moderne humain se trouvent dans l'Age de la Pierre Récent plutôt que dans l'Age de la Pierre Moyen dans Afrique.  相似文献   
99.
HMS Swift was a British sloop-of-war which sank off the coast of Patagonia, Southern Argentina, in 1770. Since 1997 the Underwater Archaeology Programme of the National Institute of Anthropology has taken charge of the archaeological research conducted at the wreck-site. This article presents an overview of the continuing Swift project and the different research lines comprised in it. The latter cover aspects related to ship-construction, material culture and natural site-formation processes.
© 2006 The Authors  相似文献   
100.
Supermarkets have spread extremely rapidly in developing countriesafter the ‘take-off’ in the early to mid-1990s.Former analyses of supermarket diffusion have not adequatelyexplained the sudden burst and then exponential diffusion ofsupermarkets in the late 1990s and early 2000s. We argue thatrather than taking demand and market institutional and organizationalconditions as ‘exogenous’, as former analyses havetended to do, modern food retailers instead have treated localconditions as substantially ‘endogenous’. To enabletheir rapid growth, supermarkets undertake ‘proactivefast-tracking strategies’ to alter the ‘enablingconditions’ of entry and growth. Beside the retail investmentsthat have been extensively treated in recent literature, theseproactive strategies focus on improving the ‘enablingconditions’ via (i) procurement system modernization and(ii) local supply chain development. One important strategyretailers have used to facilitate (i) and (ii) is to form symbioticrelationships with modern wholesale, logistics and processingfirms. An example we address is ‘follow sourcing’,where a transnational retailer encourages transnational logisticsand wholesale firms with whom the retailer is working in homemarkets, to locate to the developing country. This is a spurto globalization of services in support of retail. Follow-sourcinghas been treated for example in the automobile manufacturessector (follow-sourcing from spare parts manufacturers)—butnot in the food sector. A second important strategy is thatof multi-network-sourcing, in which supermarkets source fromnational, regional and global networks. We analyze that strategyhere, adding to the literature which to date has touched onthis theme only scantly, and for the first time identify typicalpaths, present preliminary evidence (from Central America andIndonesia) concerning this multi-sourcing-network strategy anddiscuss trade implications. One of these is the move to primacyof South–South trade in supermarket sourcing—a newdimension of globalization. By introducing this link of retailertransformation and trade into the literature, we hope to spura new line of research that is timely in light of the trade,development and globalization debates in developing countries.  相似文献   
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