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151.
Evangelos Tsakalos Constantin Athanassas Polychronis Tsipas Maria Triantaphyllou Maria Geraga George Papatheodorou Eleni Filippaki John Christodoulakis Maria Kazantzaki 《Archaeological and Anthropological Sciences》2018,10(1):41-60
Quaternary stratigraphy and sea level changes have been extensively investigated in many areas of the Mediterranean. However, numerical dating of coastal deposits and the associated paleoenvironmental information are limited for the coasts of Cyprus, principally based on radiometric and radiation-exposure geochronological techniques on fossils which bear a range of limitations and uncertainties. As such, optically stimulated luminescence (OSL) dating techniques are deemed to be the most suitable in direct dating of the coastal sediments of Cyprus. In the southeastern Cyprus, coastal dunes (aeolianites) now forming elongated ridges appear as morphological features running parallel to the current shoreline presenting an indicator of sea level and climate changes of great paleoenvironmental significance. We present our first chronological results for the exposed aeolianites and underlying littoral deposits formed along the southeastern coastal Cyprus ranging from 78.4 ± 9.9 to 56.2 ± 7.4 ka. The post-infrared–infrared stimulated luminescence (pIR-IRSL) revealed that dune formation took place during the marine isotope stages (MISs) 3, 4, and possibly 5a. Late Holocene reworking is proposed for a distinctively isolated dune with an age of ~1.3 ka ago. This study also showed that pIR-IRSL dating of feldspars may be a reliable alternative to quartz OSL dating when the quartz luminescence characteristics are unsuitable. 相似文献
152.
During late winter and spring, hunter-gatherers in temperate, subarctic, and arctic environments often relied on diets that provided marginal or inadequate caloric intakes. During such periods, particularly when stored food supplies dwindled or were used up entirely, lean meat became the principal source of energy. Nutritional problems associated with high-protein, low-energy diets are discussed. These problems include elevated metabolic rates, with correspondingly higher caloric requirements, and deficiencies in essential fatty acids. The relative benefits of adding fat or carbohydrate to a diet of lean meat are evaluated in light of the protein-sparing capacities of these two nutrients. Experimental data indicate that although both enhance high-protein, low-energy diets, carbohydrate is a more effective supplement than fat. Given the nutritional inadequacies of a lean-meat diet, the paper concludes with a discussion of alternative subsistence strategies that increase the availability of carbohydrate or fat at the critical time of year. 相似文献
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John H. Corbett 《Journal of Medieval History》1981,7(1):1-13
Gregory of Tours and his world have long been out of fashion; but despite modern neglect of his works, Gregory gives us access to an understanding of many important aspects of late antiquity, among which is the role of the saint as patron. Saints appear as patrons throughout Gregory's works; the focus of this study is his account of the miraculous deeds of St. Martin. The role of the saint as patron is best understood against the background of the recent work of Peter Brown on holy men in late antiquity; several other scholars have also emphasized the importance of patrons in the Roman world. Appeals to the saints in Gregory's world are to be understood as one manifestation of the Roman ritual of appeal to a patron. More important than their afflictions are the social circumstances of those who appeal to St. Martin and analyzing some others in detail, we can demonstrate that the most important elements in those appeals are the social weakness of the appellants, their need for a saintly patron, and Martin's role as a model saintly patron in Gregory's world 相似文献
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