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   1498篇
  免费   56篇
  2022年   9篇
  2021年   15篇
  2020年   23篇
  2019年   33篇
  2018年   34篇
  2017年   35篇
  2016年   45篇
  2015年   41篇
  2014年   29篇
  2013年   182篇
  2012年   71篇
  2011年   69篇
  2010年   35篇
  2009年   41篇
  2008年   48篇
  2007年   56篇
  2006年   52篇
  2005年   52篇
  2004年   50篇
  2003年   45篇
  2002年   51篇
  2001年   24篇
  2000年   36篇
  1999年   21篇
  1998年   25篇
  1997年   17篇
  1996年   12篇
  1995年   10篇
  1994年   17篇
  1993年   15篇
  1992年   28篇
  1991年   15篇
  1990年   16篇
  1989年   16篇
  1988年   11篇
  1987年   17篇
  1986年   20篇
  1985年   22篇
  1984年   14篇
  1983年   19篇
  1982年   16篇
  1980年   11篇
  1979年   14篇
  1978年   9篇
  1977年   11篇
  1976年   12篇
  1975年   10篇
  1973年   12篇
  1969年   9篇
  1968年   12篇
排序方式: 共有1554条查询结果,搜索用时 15 毫秒
131.
132.
133.
134.
Using participant observation, in-depth interviews, and legislative histories, we examine Westboro Baptist Church, a religious group infamous for homophobic rhetoric and funeral protests. Employing cultural and interactionist perspectives that focus on the semiotics of death, the sacred, and desecration, we outline how Westboro’s activities purposively violate deeply held signifiers of moral order through language, while simultaneously respecting extant laws of behavior. This strategy, in conjunction with the political profitability of opposing the group, explains why the group’s activism triggered extensive legal disputes and modifications at multiple levels of governance. Westboro’s actions and use of symbols—and those of others against the group—lay bare multiple threads in the sacred cultural fabric of American society.  相似文献   
135.
Cardiovascular responses to mental stress tests have been related to future blood pressure (BP) levels. However, most studies have been completed in North America and Europe; only one study has been conducted in Asia. Therefore, the study explored whether cardiovascular responses to mental stress predict future resting BP in Thailand. Hemodynamic measures were obtained from 101 healthy adults before, during and after mental arithmetic, a speech task, and a cold pressor task. A follow‐up assessment of resting BP was undertaken 1 year later. Results showed that Thais responded to standardized mental stress tasks with large and significant cardiovascular reactivity. Regression analyses indicated that, after adjustment for baseline BP and traditional risk factors, heightened systolic blood pressure (SBP) responses to mental arithmetic were associated with increased future SBP (ΔR2 = .045). These findings suggest that BP reactivity predicts future BP and may play a role in the development of hypertension. In addition, Thais displayed large cardiovascular responses to standardized mental stress tasks, of a similar magnitude to previous studies of North Americans and Europeans.  相似文献   
136.
137.
138.
In order to promote ongoing quality improvement of not only the Penn State Cancer Genetics Program, but also other cancer risk assessment programs throughout the country, we developed, piloted and conducted a survey to explore patient expectations, experiences, and satisfaction with the cancer genetic counseling process. The comprehensive survey was mailed to 340 eligible patients, 156 (45.9%) of whom returned the completed survey within the allotted time. Responses to closed-ended questions were tallied and open-ended questions were content analyzed. Major findings show that: (1) Patients were seeking cancer-related information and support throughout the cancer risk assessment process and were interested in participating in available research studies; (2) The setting in which patients are seen for cancer risk assessment may pose potential emotional ramifications; (3) Misperceptions regarding insurance discrimination and lack of insurance coverage persist; (4) Patients view the genetic counselor as responsible for updating them about new discoveries. Specific recommendations for cancer genetics programs are included.  相似文献   
139.
Socially housed mice with cytotoxic lesions of the hippocampus do not exhibit social recognition memory 30 min following exposure to a juvenile mouse, however the social recognition memory of singly housed rats is unimpaired. The present study tests the hypothesis that social housing of rats could render social recognition memory hippocampally dependent as seen for mice. Rats were housed with juveniles or with adults. Two social recognition one-animal tests paralleling those used with mice were carried out. Seven social discrimination two-animal tests were also given. Sham operated and hippocampally lesioned rats had normal social memory at 30 min whether socially housed for 24, 48 h, 7 or 8 days prior to testing. These findings support other results indicating the hippocampus proper is not required for normal social memory in rats. In a final experiment, rats socially housed in groups of three since weaning, were tested for 30 min and 24 h social memory. Unlike mice, rats socially housed throughout life exhibited social memory only at 30 min, but not at 24 h. Manipulations that extend social memory in rats may be required to render social memory hippocampally dependent or rats and mice may differ in the neural mediation of social memory.  相似文献   
140.
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