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   103447篇
  免费   4286篇
  国内免费   37篇
  2020年   1116篇
  2019年   1381篇
  2018年   1916篇
  2017年   1975篇
  2016年   2082篇
  2015年   1496篇
  2014年   1768篇
  2013年   8433篇
  2012年   3314篇
  2011年   3434篇
  2010年   2124篇
  2009年   2138篇
  2008年   2990篇
  2007年   3001篇
  2006年   2760篇
  2005年   2399篇
  2004年   2301篇
  2003年   2198篇
  2002年   2232篇
  2001年   3303篇
  2000年   3163篇
  1999年   2386篇
  1998年   1179篇
  1997年   1048篇
  1996年   1086篇
  1995年   995篇
  1993年   972篇
  1992年   2006篇
  1991年   1876篇
  1990年   1889篇
  1989年   1742篇
  1988年   1697篇
  1987年   1611篇
  1986年   1654篇
  1985年   1722篇
  1984年   1451篇
  1983年   1296篇
  1982年   953篇
  1979年   1523篇
  1978年   1121篇
  1975年   1223篇
  1974年   1368篇
  1973年   1473篇
  1972年   1219篇
  1971年   1148篇
  1970年   1022篇
  1969年   1041篇
  1968年   1309篇
  1967年   1179篇
  1966年   1061篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
62.
63.
64.
65.
66.
67.
Gay marriages (as such) are not as yet allowed anywhere but the demand for them is increasing. Most countries take a liberal attitude towards marriage: few obstacles are put in its way. But objections to gay marriages continue to be raised. These objections are refuted and the case for gay marriage is assessed through the prism of various forms of liberalism. The normative argument for allowing gay marriage is shown to be both strong and consistent with many of the values upheld by the opponents of such unions.  相似文献   
68.
We test the emotion-response congruency hypothesis, which predicts that the consequences of socially sharing one's negative emotions depend on the congruency between the shared emotion and the response that is obtained from the interaction partner. Experiment 1a shows that the response that people prefer is dependent on the specific emotion shared. Experiment 1b, however, reveals that the responses that interaction partners provide do not differ across emotions. Yet, and crucially, Experiment 2 shows that the outcomes of sharing are affected by the congruency between the response that people receive and the emotion they share, thus supporting the emotion-response congruency hypothesis. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
69.
70.
OBJECTIVE: Compare the efficacy of a multicomponent social support intervention to standard-of-care counseling on medication adherence among HIV-infected patients initiating antiretroviral therapy. DESIGN: Randomized controlled trial. Generalized estimating equations tested for differences in the percentage of participants achieving 90% adherence. MAIN OUTCOME MEASURES: Pill-taking, electronically monitored over 6 consecutive months; plasma viral load (VL), assessed at 3 and 6 months following initiation of therapy. RESULTS: Of 226 participants who were randomized and began the trial, 87 (38%) were lost to the study by 6 months. The proportion of adherent participants declined steadily over time, with no time by group interaction. Sustained adherence was associated with increased odds of achieving an undetectable VL (OR=1.78; 95% CI=1.01, 3.13). In intention-to-treat analyses, a larger proportion of the intervention group than the control group was adherent (40.15% vs. 27.59%, p=.02) and achieved an undetectable VL p=.04). However, the majority of participants who remained on study experienced some reduction in VL (>or=1-log drop or undetectable), regardless of experimental condition. CONCLUSION: The multicomponent social support intervention significantly improved medication adherence over standard-of-care counseling; evidence for improved virologic outcomes was inconsistent. Early discontinuation of care and treatment may be a greater threat to the health of HIV patients than imperfect medication-taking.  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