排序方式: 共有27条查询结果,搜索用时 31 毫秒
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Algirdas Gaigalas Anna Pazdur Adam Michczynski Jacek Pawlyta Arūnas Kleišmantas Monika Melešytė Eugenija Rudnickaitė Vaidotas Kazakauskas Julius Vainorius 《Geochronometria》2012,40(1):22-32
Abundant wood remains and buried trees have been found in the western part of Lithuania near Zakeli?kiai and Lyduv?nai on Dubysa River (a tributary of Nemunas River) where deposits are rich in organic remnants and buried soils. In Zakeli?kiai and Skiru?iai sections of Dubysa River oxbow sediments were investigated by various methods (dendrochronological, carbonate, granulometric, pollen and mollusc fauna analysis). In addition, these sections were dated using the radiocarbon method. Samples were collected from deposits of Dubysa River outcrops. The studied oxbow lakes have existed for more than 5 thousand years (from ca. 4300 BC to 1000 AD). During this period organic rich deposits with trees and branches were formed in the oxbow lake. This indicates that at the end of Atlantic, during Subboreal and in the early Subatlantic periods there was a forest growing that contained mainly oaks which were falling down into an oxbow lake and later were covered by sandy and silty deposits. The granulometry of alluvial deposits, as well as the mixture of medium-grained sand and silt show different stages of Dubysa River palaeochannel formation: riverbed and oxbow lakes. Three climate warming cycles were revealed according to carbonate analysis data in all investigated sections. The rheophile thermophilous Holocene age molluscs species Bithynia tentaculata L., Unio cf. crassus Philipsson, Pisidium amnicum (Müller), Theodoxus fluviatilis (Linnaeus) have been found. The pollen composition and sequences have been divided into five local pollen assemblage zones (LPAZ) and described according to pollen spectra in each zone. In this way it is possible restore palaeoclimatic coherent evolution, trends and cyclical change. 相似文献
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Cristina La Rocca 《Early Medieval Europe》2015,23(4):410-435
This paper deals with the construction of the foreign woman as a category that could explain, in the sixth century, the agency or the dangers of wives in different narrative contexts. The diffusion of foreign women in the sixth and seventh centuries as brides of kings and aristocrats is compared to contemporary archaeological funerary evidence. The very important role of Theoderic as wife‐giver king and the context of his power – Italy – developed the concept of a new foreign subject, identifiable in particular among peregrini both from and within Italy. This development heightened the possibility of creating networks and exporting foreign models. 相似文献
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Julius Rocca 《Journal of the history of the neurosciences》2013,22(3):282-285
Abstract Neurology in its modern sense was first studied in the well‐known neurological institutions of France and England. In America, however, this new field of medicine was developed by a physician in a private practice, Dr. William Alexander Hammond. This article addresses the question how Hammond was able to limit his practice to neurology. It is argued that Hammond was a famous military physician before becoming the first practitioner of clinical neurology in America. This fame translated into a large referral base. 相似文献
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Julius Lüttge 《Journal of Modern Italian Studies》2013,18(2):145-168
Among the many troubles that southern Italy's economy is facing, its deficient trade performance receives little attention. Yet the Mezzogiorno's comparative disadvantage in trade is a recurring theme in the long history of Italian inter-regional disparities. Adverse conditions for firms in tradeables persist while European integration opens up new opportunities for this sector to expand. In this paper, a dataset of employment rates in tradeable and non-tradeable sectors from 2000 to 2010 is constructed to analyse the strength and development of the Mezzogiorno's export base during European integration. The analysis shows that the new trade opportunities alone did not suffice to even the Mezzogiorno regions' road to export orientation. 相似文献