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   63篇
  免费   4篇
  2018年   4篇
  2017年   1篇
  2016年   6篇
  2015年   1篇
  2014年   2篇
  2013年   14篇
  2011年   3篇
  2010年   2篇
  2009年   5篇
  2008年   3篇
  2007年   1篇
  2006年   3篇
  2004年   2篇
  2003年   2篇
  2001年   1篇
  2000年   2篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
  1993年   2篇
  1987年   1篇
  1986年   1篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   2篇
  1975年   2篇
  1973年   1篇
排序方式: 共有67条查询结果,搜索用时 15 毫秒
51.
Dettmann, M.E., Clifford, H.T., Peters, M., June 2012. Emwadea microcarpa gen. et sp. nov.—anatomically preserved araucarian seed cones from the Winton Formation (late Albian), western Queensland, Australia. Alcheringa, 217–237. ISSN 0311-5518.

A new genus and species, Emwadea microcarpa Dettmann, Clifford & Peters, is established for ovulate/seed cones with helically arranged cone scales bearing a centrally positioned, inverted ovule from the basal Winton Formation (late Albian), Eromanga Basin, Queensland. The cones are small, prolate ellipsoidal (9.5–14 mm vertical axis, 6.3–8.7 mm transverse axis) with wedge-shaped cone scales bearing winged seeds attached adaxially to the scale only by tissues surrounding the vasculature entering the ovule. Ovuliferous tissue that is free from the cone scale extends distally from the chalaza; the seeds' lateral wings are derived from the integument. Foliage attached to the cones is spirally arranged, imbricate and with spreading and incurved bifacial blades with acute tips; stomata are arranged in longitudinal files and are confined to the adaxial surface. The cone organization testifies to placement within the Araucariaceae, and is morphologically more similar to Wollemia and Agathis than to Araucaria.

Mary Dettmann [mary.dettmann@qm.qld.gov.au] and Trevor Clifford, Queensland Museum, PO Box 3300, South Brisbane, Q 4101, Australia; Mark Peters, PO Box 366 Gumeracha, SA 5233, Australia. Received 31.3.2011; revised 23.8.2011; accepted 5.9.2011.

  相似文献   
52.
‘Organisation and Method’ (O&M) was a discipline promoted in Britain in the first half of the twentieth century as a way of improving the efficiency of administrative enterprises. O&M practitioners were influential actors in the implementation of various information technologies in British businesses. When computers became the new technology, their introduction was seen as a natural adjunct to O&M work. The O&M practitioners understood the connections between the individual tasks to be done, the final outcome desired, and the technologies available. The practice of organizational ‘insiders’ acting as the dedicated mediators of technological introduction resulted in some remarkable successes in computer introduction in Britain in those years. Eventually the O&M approach would be superseded by purely technical experts, arguably to the detriment of user satisfaction.  相似文献   
53.
54.
55.
56.
57.
58.
59.
Jonah 1 draws upon the myth of the battle against the sea. Most noticeable is the presence of the triad God, wind, and sea. These elements are present primarily in Genesis 1 & 8, Exodus 14 & 15, Enuma Elish and the Gilgamesh Epic, each retelling the myth of the cosmic battle. Jonah’s allusions, however, go beyond God, wind, and sea and include, for example, the use of Jonah’s name “dove” with reference to the flood accounts. The present essay illustrates these connections, among others, and maintains that the prophet Jonah represents Israel and that the book employs this common myth ironically, to the end that Jonah/Israel is punished rather than delivered through the actions of YHWH.  相似文献   
60.
In recent years “volume” has become a key analytic idea, and tool, for re‐imagining and making sense of historical and contemporary socio‐cultural and geopolitical phenomena. This paper argues that this important work could be pushed in new directions by thinking seriously of how volume might otherwise be interpreted spatially, as capacity. Accordingly, in this paper, we address what we call a “politics of capacity”. To do so, we draw specifically on debates in carceral geography and, in particular, the pressures on the prison system to illustrate our argument. Drawing on notions of “operational capacities” and “capacity building” in the prison setting, we outline a manifesto for volumetric thinking that moves beyond expressions of power that cut through height, depth and angles, to an understanding of how power is conveyed through maximum and minimum capacities; density and mass; and capacity‐building techniques.  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