首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   239篇
  免费   12篇
  2022年   4篇
  2021年   1篇
  2020年   4篇
  2019年   10篇
  2018年   15篇
  2017年   12篇
  2016年   12篇
  2015年   8篇
  2014年   11篇
  2013年   47篇
  2012年   9篇
  2011年   14篇
  2010年   7篇
  2009年   8篇
  2008年   8篇
  2007年   2篇
  2006年   4篇
  2005年   3篇
  2004年   5篇
  2003年   2篇
  2002年   3篇
  2001年   4篇
  2000年   3篇
  1999年   2篇
  1998年   3篇
  1997年   4篇
  1996年   2篇
  1995年   5篇
  1994年   2篇
  1993年   3篇
  1992年   4篇
  1991年   1篇
  1990年   3篇
  1989年   2篇
  1988年   4篇
  1987年   4篇
  1983年   2篇
  1982年   2篇
  1981年   3篇
  1979年   2篇
  1978年   1篇
  1977年   2篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
  1969年   1篇
排序方式: 共有251条查询结果,搜索用时 15 毫秒
121.
Precarity is increasingly a condition of life for Kenyan health workers as even professionals face costs of living and forms of debt that exceed their (unstable) salaries. Years of austerity and chronic scarcity have eroded healthcare infrastructures and rendered crises part of everyday work. Based on ethnographic fieldwork in Kenya from 2018 to 2020, we explore health workers’ experiences and concerns about the precarity of their working conditions, livelihoods, health and futures amidst the government's attempts to experiment with ‘universal health coverage’ (UHC) and improve access to healthcare. While UHC appears to call for greater state responsibility for healthcare futures, healthcare provision is being further outsourced and privatized, underlining that seemingly progressive health policies like UHC are sustaining and replicating neoliberal trends.  相似文献   
122.
123.
The ESR dating method requires to describe the evolution of the ESR signal intensities vs. increasing gamma doses, then to extrapolate the equivalent dose of radiation received by the sample since its deposition using mathematical fitting. The function classically used to describe the growth curves of ESR aluminium signal in quartz was recently discussed and challenged for Lower Pleistocene sediments. In the present work, some alluvial sediments sampled in Upper Pleistocene fluvial terraces of the Yellow River system (China) permit us to test the application of another extrapolation function (linear + exponential) recently proposed for Lower Pleistocene sediments. The equivalent doses obtained here for the recent deposits of the Yellow River system and the corresponding ages are promising and indicate the potential of ESR to date quartz deposits from Upper Pleistocene times.  相似文献   
124.
125.
Suetonius' Life of Augustus 52 emphasises Augustus' restraint with regard to divine honours and may have been written with the intention of contradicting Tacitus (Annales 1.10). Suetonius' statement that it was common for temples to be offered to proconsuls in the Republican period is not supported by the archaeological and epigraphical evidence. Two passages from Cicero's letters (ad Q.Fr. 1.1.26; ad Att. 5.21.7) have been seen as supporting evidence. They do not, however, necessarily provide evidence for the existence of temples to proconsuls, although it is possible that they may have been the source for Suetonius' statement.  相似文献   
126.
This article argues that Virgil's Fourth Eclogue can in part be understood in light of the influence of the Eleusinian Mysteries on Roman religion. In particular, it argues that the child can be compared with Ploutos and that the return of the Virgo reflects the myth of Persephone. The myths of Demeter at Eleusis are assimilated to the Roman myth of a golden age under the rule of Saturnus. The return of Persephone from the Underworld and the birth of the child signify an end to war. The possible significance of the poem to Augustan propaganda is also discussed.  相似文献   
127.
Early modern natural philosophers such as Francis Bacon are frequently seen as providing a legitimating ideology for British imperial expansion. Although this has been challenged by one recent study, much of Bacon's work on English colonisation remains unexplored. This article argues that far from being an ideological apologist for English colonisation, Bacon had two sets of colonial anxieties. The first derived from a tradition of civic humanism which concerned the moral corruption, dispossession of indigenous people and the greed involved in the British colonization of Ireland and America. Bacon's second anxiety was not moral but epistemological, and stemmed from his natural philosophy. For Bacon, colonies were not simply new commonwealths, they were places which potentially produced the natural knowledge vital for the recreation of man's original, epistemic empire over the world. Consequently, Bacon was not only interested in the morality of colonising, but also whether the knowledge produced in colonies was reliable. An exploration of Bacon's views on colonisation also offers us a point of entry into the scholarly debate about the relationship between Bacon's natural philosophy and his political thought.  相似文献   
128.
129.
High-resolution stable oxygen isotope analysis of the bivalve Saxidomus gigantea from shell midden sites was applied to identify seasonal patterns of resource procurement on the central coast of British Columbia, Canada. A total of 90 archaeological shells were examined from eight distinct sites spanning a 4500-year period. Combining micro-growth pattern analysis with high-resolution stable oxygen isotope sampling allows for a precise season of collection to be determined in estuarine bivalves recovered from archaeological sites. The results of the stable oxygen isotope analysis provide insights into seasonally structured harvest of S. gigantea (butter clam), which is associated with different types of sites. The results show a variety of patterns, including multi-seasonal collection, intensive seasonal harvesting and casual, supplemental use of butter clams at different locations.  相似文献   
130.
A sedimentary deposit discovered at Kerguelen Islands in 1988 is interbedded in the Cape MacLear cliffs, near Mont Rond (Ronarc'h Peninsula). The age of this oceanic deposit is considered to be lower to middle Miocene as indicated by isotopic dating of both the underlying and overlying basalts. This deposit yields a fauna essentially consisting of molluscs (bivalves, gastropods) and crustaceans (cirripedes). This fauna exhibits some similarities to Miocene to Recent austral faunas (New Zealand, Argentina) as a result of the establishment of the Antarctic Circumpolar Current. However, it has no species in common with the extant Kerguelen fauna. The Mont Rond fossil assemblage is best compared with either of two types of extant communities developed on a bare sandy sea floor where infaunal species are dominant, but most likely to an opportunistic one in depths from approximately 10 to 80 m.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号