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   126762篇
  免费   3566篇
  国内免费   893篇
  131221篇
  2022年   208篇
  2021年   495篇
  2020年   280篇
  2019年   393篇
  2018年   12191篇
  2017年   10988篇
  2016年   8063篇
  2015年   1644篇
  2014年   1521篇
  2013年   1926篇
  2012年   6119篇
  2011年   14729篇
  2010年   13146篇
  2009年   9348篇
  2008年   11461篇
  2007年   13095篇
  2006年   2037篇
  2005年   2342篇
  2004年   2701篇
  2003年   2765篇
  2002年   2446篇
  2001年   657篇
  2000年   388篇
  1999年   408篇
  1998年   491篇
  1997年   369篇
  1996年   363篇
  1995年   285篇
  1994年   335篇
  1993年   336篇
  1992年   309篇
  1991年   300篇
  1990年   268篇
  1989年   239篇
  1988年   271篇
  1987年   252篇
  1986年   220篇
  1985年   302篇
  1984年   395篇
  1983年   330篇
  1982年   374篇
  1981年   435篇
  1980年   416篇
  1979年   252篇
  1978年   258篇
  1977年   274篇
  1976年   263篇
  1974年   233篇
  1972年   371篇
  1971年   371篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
122.
William Ruddick 《Bioethics》1997,11(3&4):246-255
Routinely, physicians discount patients' pain reports and provide too little analgesia too late. Critics call them callous, sadistic, and Puritanical, but the causes of these clinical practices are different — namely, a psychological need to distance themselves from the pain they encounter and inflict, and more subtly, a peculiar concept of pain acquired in medical training.
Physicians learn to think of pain as a symptom to observe and explore in diagnosing and monitoring disease — not as a complaint to relieve quickly or fully. Moreover, pain-relief is regarded as subordinate to, and competing with efforts to cure or maintain the life of a patient. This training, I suggest, gives physicians a new, clinical concept of pain at odds with their prior, lay concept of pain whose manifestations standardly call for sympathetic efforts at relief.
The conceptual nature of this difference is obscured by thinking of pain as a solely private sensation, rather than as a sensation with public and social aspects (a la Wittgenstein). Although suppressed in certain clinical circumstances, these standard public and social aspects are shown in the very tests used in clinical pain research.
This clinical pain concept is rooted in Medicine conceived as preeminently curative and life-prolonging. Physicians are, however, themselves undermining this professional self-definition (by treating AIDS and Alzheimer's patients; by no longer pressing their patients to 'fight to the end'; by collaborating with non-medical healers). Accordingly, pain-relief may gain greater therapeutic status, and, so too, the ordinary concept of pain that medical training has suppressed.  相似文献   
123.
124.
We report observational data on behavioral laterality in 10 captive bonobos (Pan paniscus)at the San Diego Zoo. The unimanual measures include carrying, leading limb in locomotion, self-touching, face-touching, reaching, and gestures. We also recorded bimanual feeding in these subjects. A significant population level left-hand bias exists for carrying. Right-hand biases occur for leading limb in locomotion and gestures. During bimanual feeding, the bonobos hold food items with the left hand while feeding with the right hand. Overall, bonobos exhibit behavioral asymmetries that are similar to previous findings in other pongid ape species. The asymmetries in gestures and bimanual feeding represent novel findings with theoretical implications for the origins of tool use and language.  相似文献   
125.
126.
127.
128.
129.
130.
The ontogeny of large, globular, epidermal cytoplasmic inclusions (ECI) in P. virgatum roots was studied at the ultrastructural level. These ECI were seen to originate in meristematic cells as small electron translucent vesicles. Subsequently, the ECI, which appeared to be temporary storage sites, were seen to enlarge and increase in density by accumulating masses of a granular matrix as well as some small vesicular inclusions. In the zone of elongation, as the epidermal cells matured, the ECI within each cell gradually fused and the contents were lost. The pattern of the ontogeny of the ECI in the growing epidermal cells was consistent with the presence of cells of different physiologies in the zone of cell elongation of these roots.  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