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   96篇
  免费   4篇
  2023年   1篇
  2022年   1篇
  2020年   1篇
  2018年   10篇
  2017年   3篇
  2016年   4篇
  2015年   2篇
  2014年   1篇
  2013年   24篇
  2011年   2篇
  2010年   3篇
  2009年   2篇
  2008年   1篇
  2007年   2篇
  2004年   3篇
  2003年   3篇
  2002年   3篇
  2001年   2篇
  1997年   1篇
  1996年   3篇
  1995年   2篇
  1993年   2篇
  1991年   1篇
  1988年   1篇
  1987年   2篇
  1986年   2篇
  1985年   1篇
  1981年   1篇
  1980年   1篇
  1979年   2篇
  1978年   1篇
  1977年   1篇
  1976年   1篇
  1975年   1篇
  1974年   3篇
  1968年   2篇
  1966年   1篇
  1960年   3篇
排序方式: 共有100条查询结果,搜索用时 15 毫秒
51.
52.
53.
54.
55.
In this revised text of a lecture delivered at the Royal Institute of International Affairs in June 2003, Stanley Hoffmann traces the history of America's close postwar alliance with western Europe. Out of the treaty in which America undertook to protect western Europe came the organization of NATO. Despite the difficulties and differences of opinion among its members in the early years—decolonization, German rearmament, Vietnam, US—French relations—the alliance survived and continued to survive after 1991 despite losing its main enemy, the Soviet Union. It then became a tool for managing relations between members and the newly liberated countries of central and eastern Europe and Russia. After the first Gulf War, however, NATO became a field for US—European relations, encompassing rivalry over approaches to eastern Europe, and cooperation in the Balkans. September 11 and the 'war on terrorism' marked the real turning point in the alliance and the subsequent war in Iraq in 2003 exposed deep divisions in the approach to international relations. Stanley Hoffmann concludes that it is still unclear how far Iraq has affected the substance of US foreign policy and its relations with Europe. It may be possible to predict, however, that the central importance of Europe for the US will remain under a cloud—'the days of relative harmony have not returned'.  相似文献   
56.
We report here the first results of a method to extract and sequence mature enamel proteins from modern human and Neanderthal tooth enamel. Using MALDI-TOF/TOF mass spectrometry and a combination of direct sequencing and peptide mass mapping we have sequenced a peptide from the tyrosine-rich amelogenin peptide (TRAP) of the X isoform of the amelogenin protein for modern and recent human samples. We also report our results from two Neanderthal enamel samples where we were also able to recover fragments of the TRAP protein, which had a similar sequence to the modern human samples.  相似文献   
57.
58.
59.
Indo-Iranian Journal -  相似文献   
60.
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