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   22950篇
  免费   909篇
  国内免费   11篇
  2019年   267篇
  2018年   391篇
  2017年   414篇
  2016年   447篇
  2015年   331篇
  2014年   375篇
  2013年   1873篇
  2012年   655篇
  2011年   673篇
  2010年   411篇
  2009年   390篇
  2008年   530篇
  2007年   594篇
  2006年   508篇
  2005年   477篇
  2004年   454篇
  2003年   442篇
  2002年   464篇
  2001年   757篇
  2000年   722篇
  1999年   552篇
  1998年   225篇
  1996年   226篇
  1995年   214篇
  1992年   464篇
  1991年   462篇
  1990年   434篇
  1989年   414篇
  1988年   435篇
  1987年   391篇
  1986年   404篇
  1985年   395篇
  1984年   317篇
  1983年   288篇
  1982年   216篇
  1981年   224篇
  1979年   365篇
  1978年   273篇
  1977年   235篇
  1976年   218篇
  1975年   296篇
  1974年   371篇
  1973年   382篇
  1972年   296篇
  1971年   292篇
  1970年   287篇
  1969年   260篇
  1968年   358篇
  1967年   318篇
  1966年   293篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
The purpose of this study was to determine the effects of Type A behavior and family history of hypertension on cardiovascular reactivity to mental stress in a group of employed black women. Measures of heart rate and of systolic blood pressure (SBP) and diastolic blood pressure (DBP) were taken at rest, during a mental arithmetic task, and during the Type A Structured Interview (SI). Results indicated that the Type A behavior pattern was associated with SBP and DBP hyperresponsivity during the SI but not during mental arithmetic. Additionally, certain speech components of the Type A pattern, as well as features of the potential-for-hostility component, were also related to cardiovascular responses during the SI. Family history of hypertension did not influence the cardiovascular parameters either alone or in combination with Type A behavior. The results suggest that many of the cardiovascular response characteristics of the Type A pattern that have been observed in predominantly white samples also hold true for blacks. Replication of these findings with other subgroups of blacks, such as young females and middle-aged males, will help document the generality of these findings within the black population.  相似文献   
63.
64.
65.
Another look at Bare Particulars   总被引:1,自引:0,他引:1  
  相似文献   
66.
67.
68.
MMPI profiles of female adolescents hospitalized on a general pediatrics floor following a suicide attempt were compared to a control group of medically hospitalized, female adolescents referred for psychiatric evaluation. The suicide attempters had only a lower score on the K scale when compared to the control group. Results do not suggest that a single MMPI profile differentiates suicide attempters from a comparison group of adolescents with emotional difficulties. Implications of these findings are discussed.  相似文献   
69.
Two formats of the Multidimensional Health Locus of Control (MHLC) Scales were administered to 54 college students. Each subject completed the MHLC Scales in the standard 6-level response format (ranging from strongly disagree to strongly agree) and in a revised 2-level format (ranging from disagree to agree). Comparisons of internal consistency measures, principal components, and classification of subjects into groups indicate that the 2-level response format yields comparable data to those obtained with the 6-level format, particularly when classification of subjects is the goal.  相似文献   
70.
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