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91.
92.
In the history of Dutch neurology Muskens has a place in his own right. Elderly neurologists still attest to the special fame of Muskens. He held a strong opinion on developing the specialty of neurology independent of psychiatry. At the same time he maintained that surgery of the nervous system also should be included in the realm of neurology. These views met with considerable opposition from colleagues and led to Muskens' isolation. To the field of epileptology he contributed both clinical and experimental neurological studies. With Donath he was the co-founder of the International League Against Epilepsy in 1909. In addition he held a lifelong interest in the pathophysiology of forced movements, which he studied both in human pathology and in experimental studies throughout the vertebrate series. This resulted in his magnum opus on the supravestibular system in 1935. His scientific work was well received in scientific societies all over Europe. 相似文献
93.
Charlotte L. Oskam Chris Jacomb Morten E. Allentoft Richard Walter R. Paul Scofield James Haile Richard N. Holdaway Michael Bunce 《Journal of archaeological science》2011
Using ancient DNA (aDNA) extracted from eggshell of the extinct moa (Aves: Dinornithiformes) we determined the species composition and number of eggs found in a late thirteenth century earth oven feature at Wairau Bar (South Island, New Zealand) – one of New Zealand’s most significant archaeological sites. Mitochondrial and nuclear DNA signatures confirmed this oven feature contained fragments of at least 31 moa eggs, representing three moa genera: Emeus; Euryapteryx; Dinornis. We demonstrate through the genetic identification of 127 moa eggshell fragments that thickness is an unreliable character for species assignment. We also present a protocol for assessing the preservation likelihood of DNA in burnt eggshell. This is useful because eggshell fragments found in archaeological contexts have often been thermally modified, and heat significantly increases DNA fragmentation. Eggshell is widely used in radiocarbon dating and stable isotope research, this study showcases how aDNA can also add to our knowledge of eggshell in both archaeological and palaeoecological contexts. 相似文献
94.
95.
Marie-Hélène Moncel María Gema Chacón Aude Coudenneau Paul Fernandes 《Journal of archaeological science》2009
The lithic assemblage from the Middle Palaeolithic site of Payre (Rhone Valley, France) contains a large number of convergent tools and pointed tools of various shapes, sizes and retouch types. These were excavated from several archaeological units, dating from marine isotopic stages 8–5, which also yielded human skeletal remains. Consideration of this large tool kit has led to an improved analysis of Middle Palaeolithic tools with two retouched convergent edges. The 350 tools were not described within the classical typological framework, but, rather, from a lithic technological perspective in relation to a discoid debitage. In addition, an initial macroscopic use-wear analysis aided in establishing whether they were used according to their technical and/or morphological features. The Middle Palaeolithic convergent tools from Payre are shown to be quite diversified, and the question of the significance of the retouch and the definition of the various types is addressed. Initial functional results indicate that a clear relationship between shape and function cannot be easily established, and that these tools were used as hand tools. This study contributes to the debate on the use of stone tip spears in the Early European Middle Palaeolithic. 相似文献
96.
The interpretation that a rock has been subjected to cultural utilization is a basic element of hunter-gatherer research. The fracture mechanics of the flaked stone tool production process are well understood and the material residues are routinely identified during fieldwork. Conversely, non-percussion processes such as hot-rock technology, which can result in rock fracture, are less well understood. An experimental study has been developed to examine the fractured gravels observed at a prehistoric site on the Southern Plains (USA). The experiment has sought to determine whether cultural or natural agencies were responsible for the production of the angularly fractured rocks. The positive results of the experiment indicate that not only were humans most likely responsible for the breakages, but also that the fractured rocks often exhibit distinctive morphologies that may be identified during fieldwork. This simple experimental methodology is applicable to other hunter-gatherer sites where the depositional environment is not conducive to the structural preservation of features such as hearths. 相似文献
97.
The processes of replacement of party leaders are well-published events in media outlets across the world's democracies, but are scarcely analysed by political scientists. In this article we examine the extent to which incumbent party leaders are able to control their own fate in the face of various types of challenges that herald a possible end to their rule. It discusses three related research questions derived from this main objective: (1) what makes incumbents quit? (2) How do incumbents respond to various types of triggers heralding a possible end to their rule? (3) To what extent does incumbent behaviour prior to and following succession affect the fortunes of their successors and their party? We draw on a four-country–eight-party data set of leadership successions between 1945 and 2005, and on findings of in-depth studies of Australian cases to show that not only do Australian leaders get challenged and replaced more frequently than do other leaders, but they are also forced to combat more internal rivalry than their counterparts elsewhere. 相似文献
98.
Paul Monk 《Australian Journal of International Affairs》1996,50(3):309-313
Peter Grose, Gentleman Spy: The Life of Allen Dulles. Boston and New York: Houghton Mifflin, 1994. 641 pp. $51.00 (cloth).
Oleg Kalugin, Spy Master: My 32 Years in Intelligence and Espionage Against the West. London: Smith Gryphon, 1995. 375 pp. $19.95 (paper).
Oleg Gordievsky, Next Stop Execution. London: Macmillan, 1995. 404 pp. No price given. 相似文献
99.
100.
Paul Simpson 《Social & Cultural Geography》2013,14(8):1050-1069
AbstractEveryday experiences of movement have become a central concern for social and cultural geography in recent years. Work here has begun to unpack the specific meanings, imaginaries and experiences that come to be bound up with mobile bodies and their practices. However, it has been suggested that more could be done to examine the material, elementary, molecular and physical aspects of movement which are significant to the experience of being on the move. Therefore, this paper explores the experience of cycling amid such turbulent ‘elemental’ materialities. Such ‘matters’ matter to cycling in the way that they (re)make both mobile environments and mobile subjectivities. Cyclists come to have quite immediate and intimate relationships with the material and ‘elementary’ aspects of the environments they move through given their relatively unmediated encounters with them. This paper draws on video-interview based research with 24 commuter cyclists in Plymouth, UK to consider cyclists’ experience of atmospheric conditions in terms of air’s force and air quality. From this, the paper reflects on how the experience of such ‘elemental’ matters might be significant to future research on and planning for cycling. 相似文献