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   3238326篇
  免费   262791篇
  国内免费   6667篇
耳鼻咽喉   46118篇
儿科学   102538篇
妇产科学   89465篇
基础医学   454211篇
口腔科学   92881篇
临床医学   296895篇
内科学   633780篇
皮肤病学   69191篇
神经病学   272635篇
特种医学   127211篇
外国民族医学   1186篇
外科学   486209篇
综合类   78534篇
现状与发展   4篇
一般理论   1367篇
预防医学   263701篇
眼科学   76614篇
药学   237139篇
  6篇
中国医学   6565篇
肿瘤学   171534篇
  2018年   34785篇
  2017年   26715篇
  2016年   29664篇
  2015年   33538篇
  2014年   48271篇
  2013年   73046篇
  2012年   98559篇
  2011年   104202篇
  2010年   61472篇
  2009年   58737篇
  2008年   97896篇
  2007年   103950篇
  2006年   104926篇
  2005年   102118篇
  2004年   97904篇
  2003年   94232篇
  2002年   92109篇
  2001年   151040篇
  2000年   155745篇
  1999年   131146篇
  1998年   38523篇
  1997年   34903篇
  1996年   34561篇
  1995年   33139篇
  1994年   30829篇
  1993年   28894篇
  1992年   103686篇
  1991年   99705篇
  1990年   96018篇
  1989年   92321篇
  1988年   85611篇
  1987年   84215篇
  1986年   79366篇
  1985年   75875篇
  1984年   57901篇
  1983年   49349篇
  1982年   30253篇
  1981年   26900篇
  1979年   53563篇
  1978年   37833篇
  1977年   31730篇
  1976年   29813篇
  1975年   31070篇
  1974年   38191篇
  1973年   36515篇
  1972年   34251篇
  1971年   31495篇
  1970年   29784篇
  1969年   27715篇
  1968年   25650篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
94.
95.
ContextIt is especially important that patients are well informed when making high-stakes, preference-sensitive decisions like those on the Physician Orders for Life-Sustaining Treatment (POLST) form. However, there is currently no way to easily evaluate whether patients understand key concepts when making these important decisions.ObjectivesTo develop a POLST knowledge survey.MethodsExpert (n = 62) ratings of key POLST facts were used to select items for a POLST knowledge survey. The survey was administered to nursing facility residents (n = 97) and surrogate decision-makers (n = 112). A subset (n = 135) were re-administered the survey after a standardized advance care planning discussion to assess the scale's responsiveness to change.ResultsThe 19-item survey demonstrated adequate reliability (α = 0.72.). Residents' scores (x = 11.4, standard deviation 3.3) were significantly lower than surrogate scores (x = 14.7, standard deviation 2.5) (P < 0.001). Scores for both groups increased significantly after administration of a standardized advance care planning discussion (P < 0.001). Although being a surrogate, age, race, education, cognitive functioning, and health literacy were significantly associated with higher POLST Knowledge Survey scores in univariate analyses, only being a surrogate (P < 0.001) and being white (P = 0.028) remained significantly associated with higher scores in multivariate analyses.ConclusionThe 19-item POLST Knowledge Survey demonstrated adequate reliability and responsiveness to change. Findings suggest the survey could be used to identify knowledge deficits and provide targeted education to ensure adequate understanding of key clinical decisions when completing POLST.  相似文献   
96.
97.
98.
ABSTRACT

HIV-positive men who have sex with men (HIV+MSM) in India need culturally-relevant interventions to promote safer sex. We tested a multi-level intervention among HIV+MSM that targeted individual, interpersonal, and community factors, based on the Social-Personal and Social Ecological Models. We conducted a 2?×?2 factorial RCT with 119 HIV+MSM randomised to receive either an individual-level intervention (ILI) using motivational interviewing to promote safer sex, a community-level intervention (CLI) to strengthen community norms toward safer sex and reduce stigma among MSM communities, a multi-level intervention combining the individual- and community-level interventions (ILI?+?CLI), or standard-of-care control. Participants completed pre- and post-intervention assessments of a composite sexual risk score and a process evaluation to assess fidelity and satisfaction. Out of the 119 HIV+MSM, 106 (89.0%) completed pre- and post-intervention assessments. Generalised Estimating Equation models showed that both CLI (Incidence Rate Ratio [IRR]?=?.67, 95% CI .47 to .96) and ILI?+?CLI (IRR?=?.66, 95% CI .48 to .91) groups had a statistically significant decrease in sexual risk compared to the standard-of-care. The interventions had high levels of fidelity and satisfaction. This pilot RCT demonstrated feasibility and potential effectiveness of a multi-level intervention that addresses individual, interpersonal and community-level contributors of sexual risk among HIV+MSM.  相似文献   
99.
100.
Behçet disease is a complex, multisystem disease characterized by recurrent oral and genital ulcerations. It rarely occurs in infants or children. Neonatal Behçet disease has been reported in infants whose ulcers resolve at or before 9 weeks of age. Few cases of neonatal Behçet disease persisting into childhood have previously been reported. We report the case of a 1‐month‐old infant who presented with severe recurrent genital ulcerations and at 6 months developed recurrent oral ulcerations. Her orogenital ulcerations continue to recur. Human leukocyte antigen testing revealed HLA‐B51 and B44 positivity. This is a case of pediatric Behçet disease in the neonatal period. Behçet disease should be considered in the differential diagnosis of recurrent genital and oral ulcerations in infants and children.  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