全文获取类型
收费全文 | 7667篇 |
免费 | 340篇 |
国内免费 | 2篇 |
专业分类
8009篇 |
出版年
2023年 | 52篇 |
2022年 | 52篇 |
2021年 | 98篇 |
2020年 | 141篇 |
2019年 | 169篇 |
2018年 | 284篇 |
2017年 | 280篇 |
2016年 | 263篇 |
2015年 | 180篇 |
2014年 | 198篇 |
2013年 | 739篇 |
2012年 | 386篇 |
2011年 | 368篇 |
2010年 | 198篇 |
2009年 | 242篇 |
2008年 | 328篇 |
2007年 | 331篇 |
2006年 | 253篇 |
2005年 | 230篇 |
2004年 | 225篇 |
2003年 | 210篇 |
2002年 | 184篇 |
2001年 | 171篇 |
2000年 | 133篇 |
1999年 | 118篇 |
1998年 | 79篇 |
1997年 | 74篇 |
1996年 | 74篇 |
1995年 | 58篇 |
1993年 | 68篇 |
1992年 | 70篇 |
1991年 | 76篇 |
1990年 | 65篇 |
1989年 | 65篇 |
1988年 | 66篇 |
1987年 | 65篇 |
1986年 | 54篇 |
1985年 | 67篇 |
1984年 | 65篇 |
1983年 | 54篇 |
1982年 | 55篇 |
1979年 | 62篇 |
1978年 | 59篇 |
1977年 | 52篇 |
1975年 | 65篇 |
1974年 | 62篇 |
1973年 | 56篇 |
1972年 | 50篇 |
1971年 | 53篇 |
1967年 | 60篇 |
排序方式: 共有8009条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Carol VanZile-Tamsen Maria Testa Lisa L Harlow Jennifer A Livingston 《Health psychology》2006,25(2):249-254
The current study was designed to gain a better understanding of the nature of the relationship between substance use and sexual risk taking within a community sample of women (N = 1,004). Using confirmatory factor analysis, the authors examined the factor structure of sexual risk behaviors and substance use to determine whether they are best conceptualized as domains underlying a single, higher order, risk-taking propensity. A 2 higher order factor model (sexual risk behavior and substance use) provided the best fit to the data, suggesting that these 2 general risk domains are correlated but independent factors. Sensation seeking had large general direct effects on the 2 risk domains and large indirect effects on the 4 first-order factors and the individual indicators. Negative affect had smaller, yet still significant, effects. Impulsivity and anxiety were unrelated to sexual health risk domains. 相似文献
5.
6.
7.
Tavis S Campbell Blaine Ditto Jean R Séguin Jean-Marc Assaad Robert O Pihl Daniel Nagin Richard E Tremblay 《Health psychology》2002,21(6):594-600
A growing literature has observed a significant reduction in pain sensitivity among hypertensive animals and humans. It is uncertain whether a reduced sensitivity to pain can be observed in nonnotensive individuals who go on to develop high blood pressure. Blood pressure (BP) was reassessed in one hundred fifteen 19-year-old boys initially tested at age 14, when they were also presented with a pain stimulus (mechanical finger pressure). Hierarchical regression analyses indicated that information regarding pain tolerance improved prediction of changes in systolic and diastolic blood pressure beyond that afforded by differences in BP at age 14, parental history of hypertension, and body mass index. These analyses suggest that pain sensitivity may be associated with physiological processes involved in the development of sustained high blood pressure. 相似文献
8.
9.
10.