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   25980篇
  免费   849篇
  国内免费   12篇
  2019年   254篇
  2018年   478篇
  2017年   482篇
  2016年   580篇
  2015年   406篇
  2014年   377篇
  2013年   1783篇
  2012年   854篇
  2011年   884篇
  2010年   400篇
  2009年   384篇
  2008年   522篇
  2007年   569篇
  2006年   502篇
  2005年   1716篇
  2004年   1052篇
  2003年   829篇
  2002年   563篇
  2001年   764篇
  2000年   718篇
  1999年   554篇
  1998年   217篇
  1996年   222篇
  1995年   200篇
  1992年   467篇
  1991年   475篇
  1990年   476篇
  1989年   435篇
  1988年   439篇
  1987年   404篇
  1986年   414篇
  1985年   411篇
  1984年   328篇
  1983年   291篇
  1982年   204篇
  1981年   205篇
  1979年   377篇
  1978年   263篇
  1977年   219篇
  1976年   206篇
  1975年   303篇
  1974年   382篇
  1973年   392篇
  1972年   306篇
  1971年   302篇
  1970年   296篇
  1969年   269篇
  1968年   362篇
  1967年   323篇
  1966年   299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.
66.
Another look at Bare Particulars   总被引:1,自引:0,他引:1  
  相似文献   
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