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   34129篇
  免费   1293篇
  国内免费   19篇
  2020年   329篇
  2019年   454篇
  2018年   623篇
  2017年   683篇
  2016年   669篇
  2015年   476篇
  2014年   553篇
  2013年   2685篇
  2012年   958篇
  2011年   1083篇
  2010年   704篇
  2009年   705篇
  2008年   993篇
  2007年   931篇
  2006年   879篇
  2005年   743篇
  2004年   689篇
  2003年   741篇
  2002年   687篇
  2001年   1247篇
  2000年   1210篇
  1999年   873篇
  1998年   399篇
  1997年   335篇
  1996年   328篇
  1995年   325篇
  1994年   320篇
  1992年   739篇
  1991年   716篇
  1990年   678篇
  1989年   633篇
  1988年   609篇
  1987年   595篇
  1986年   564篇
  1985年   633篇
  1984年   508篇
  1983年   380篇
  1979年   479篇
  1978年   355篇
  1977年   342篇
  1976年   329篇
  1975年   424篇
  1974年   434篇
  1973年   489篇
  1972年   386篇
  1971年   327篇
  1969年   328篇
  1968年   382篇
  1967年   334篇
  1966年   385篇
排序方式: 共有10000条查询结果,搜索用时 390 毫秒
81.
We examined the effects of acute psychological stress on lymphocyte proliferation and circulating levels of interleukin-1 and -2. Healthy men were exposed to two viewings of a gruesome surgery film and were asked to recall details of the film twice during a 30-min period. These subjects were compared to a nonstress control group. Lymphocyte proliferation to the mitogen concanavalin A (Con A; 5 micrograms/ml) was decreased during and after exposure to the stressor when compared to the control group. This decrease was more pronounced in subjects exhibiting greater blood pressure reactivity while viewing the film than in subjects showing smaller blood pressure responses. None of the other immunological measures was significantly affected by the stressor. Cortisol was not correlated with lymphocyte responsiveness. Possible explanations for these results and implications for further research are discussed.  相似文献   
82.
83.
Ohne Zusammenfassung Mit 117 Abbildungen im Text.  相似文献   
84.
85.
86.
87.
88.
89.
90.
This essay is based on a pilot study that examined the effects of managed care on the treatment of children and families, with special attention to community mental health. We embarked on the pilot study to test the accuracy and generalizability of our impression that family therapy and other systemic practices have been marginalized in ordinary clinics and agencies, and to understand the reasons why. We interviewed managed care providers, researchers, family therapy trainers, and clinicians in the Northeast. Our findings led to seven themes that support our impression that, even though there is a consensus about the need for coordinated family-based services, there is a disconnection between state policies, contractual requirements and what is actually occurring at the implementation level. This study suggests that our knowledge of human systems may be in danger of being disqualified and lost, with damaging consequences for the care of children. Yet, as systemic thinkers and practitioners, it is our belief that ethical and effective treatment need not be at odds with care that is cost-efficient. The direction of our future research will be to study whether the involvement of all stakeholders at all levels of planning and training leads to systemic family-based practices that consistently save costs and provide high-quality care.  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