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   91558篇
  免费   6534篇
  国内免费   223篇
耳鼻咽喉   1041篇
儿科学   3942篇
妇产科学   2322篇
基础医学   12152篇
口腔科学   2904篇
临床医学   10716篇
内科学   18204篇
皮肤病学   2002篇
神经病学   8520篇
特种医学   2436篇
外国民族医学   2篇
外科学   11061篇
综合类   570篇
一般理论   79篇
预防医学   8685篇
眼科学   1980篇
药学   5580篇
  2篇
中国医学   236篇
肿瘤学   5881篇
  2023年   725篇
  2022年   741篇
  2021年   2067篇
  2020年   1478篇
  2019年   2237篇
  2018年   2869篇
  2017年   2161篇
  2016年   2391篇
  2015年   2466篇
  2014年   3128篇
  2013年   4647篇
  2012年   6796篇
  2011年   7312篇
  2010年   3913篇
  2009年   3168篇
  2008年   6074篇
  2007年   6391篇
  2006年   6230篇
  2005年   6078篇
  2004年   5882篇
  2003年   5384篇
  2002年   5014篇
  2001年   1268篇
  2000年   1255篇
  1999年   963篇
  1998年   904篇
  1997年   707篇
  1996年   597篇
  1995年   558篇
  1994年   459篇
  1993年   440篇
  1992年   335篇
  1991年   287篇
  1990年   261篇
  1989年   224篇
  1988年   222篇
  1987年   173篇
  1986年   191篇
  1985年   163篇
  1984年   179篇
  1983年   172篇
  1982年   194篇
  1981年   176篇
  1980年   163篇
  1979年   134篇
  1978年   120篇
  1977年   102篇
  1976年   87篇
  1974年   79篇
  1973年   80篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
ABSTRACT

Objective: Dry eye is reported to be associated with several neurological diseases. The aim of this study is to evaluate the patients with hemiplegia after stroke for dry eye and compare their results with a control group.

Materials and methods: Forty-five patients with hemiplegia and 45 individuals as the control group were included in the study. Tear function tests (Schirmer and tear breakup time) and a dry eye questionnaire for dry eye symptoms (ocular surface disease index) were performed and the results of the two groups were compared.

Results: Schirmer test results were significantly lower in the post-stroke hemiplegia group compared to the control group (11.3 ± 8.2 mm and 20.6 ± 11.6 mm, respectively, p < .001). Tear breakup time results were significantly lower in the post-stroke hemiplegia group compared to the control group (7.9 ± 3.1 s and 12.1 ± 4.3 s, respectively, p < .001). Ocular surface disease index scores were not significantly different between hemiplegia and control groups (21.6 ± 20.0 and 19.8 ± 13.9, respectively, p = .635). Schirmer scores lower than 10 mm (60% and 30%, p < .001) and tear breakup time results lower than 10 s (65.6% and 28.9%, p < .001) were also higher in the hemiplegia group compared to control group.

Conclusion: We found lower Schirmer test and tear breakup time results and similar OSDI scores in hemiplegia patients compared to controls. Hemiplegia patients may have dry eye without typical symptoms. This should be taken into consideration in the follow-up and rehabilitation of post-stroke hemiplegia patients.  相似文献   
3.
4.
5.
European Radiology - The strongest adverse prognostic factor in myxoid/round cell liposarcomas (MRC-LPS) is the presence of a round cell component above 5% within the tumor bulk. Its identification...  相似文献   
6.
7.
Recent years have brought an enhanced understanding of keratinocyte contribution to cutaneous nociception. While intra‐epidermal nerve endings were classically considered as the exclusive transducers of cutaneous noxious stimuli, it has now been demonstrated that epidermal keratinocytes can initiate nociceptive responses, like Merkel cells do for the innocuous mechanotransduction. In the light of recent in vivo findings, this article outlines this paradigm shift that points to a not yet considered population of sensory epidermal cells.  相似文献   
8.
9.
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   
10.
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