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   5365篇
  免费   347篇
  国内免费   40篇
耳鼻咽喉   47篇
儿科学   104篇
妇产科学   73篇
基础医学   602篇
口腔科学   65篇
临床医学   510篇
内科学   1435篇
皮肤病学   96篇
神经病学   708篇
特种医学   174篇
外科学   926篇
综合类   6篇
一般理论   1篇
预防医学   234篇
眼科学   59篇
药学   408篇
中国医学   8篇
肿瘤学   296篇
  2024年   5篇
  2023年   54篇
  2022年   137篇
  2021年   209篇
  2020年   105篇
  2019年   165篇
  2018年   198篇
  2017年   137篇
  2016年   165篇
  2015年   162篇
  2014年   232篇
  2013年   281篇
  2012年   405篇
  2011年   396篇
  2010年   235篇
  2009年   231篇
  2008年   352篇
  2007年   338篇
  2006年   328篇
  2005年   346篇
  2004年   325篇
  2003年   275篇
  2002年   229篇
  2001年   32篇
  2000年   31篇
  1999年   32篇
  1998年   59篇
  1997年   34篇
  1996年   39篇
  1995年   26篇
  1994年   39篇
  1993年   19篇
  1992年   8篇
  1991年   12篇
  1990年   7篇
  1989年   19篇
  1988年   12篇
  1987年   10篇
  1986年   7篇
  1985年   5篇
  1984年   8篇
  1983年   10篇
  1982年   6篇
  1980年   4篇
  1979年   4篇
  1976年   3篇
  1975年   2篇
  1974年   2篇
  1970年   2篇
  1968年   3篇
排序方式: 共有5752条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
105.
106.
107.
108.
109.
We assessed a microswitch-based program to improve self-determination to access to preferred stimuli and to foster locomotor behavior by two girls with Rett syndrome and multiple disabilities. To enhance the first behavior (access to preferred stimuli) a wobble microswitch (sensitive touch sensor) was used while for the second behavior (step responses) optic sensors were applied. A second aim of the study was to monitor indices of happiness as consequence of the use of assistive technology. Finally, a third objective of the study was the reduction of hand washing and body rocking related stereotypies. The study was carried out according to a multiple probe design across behaviors for both participants, where the two behaviors were first learned independently, then combined together. Results showed an increasing of performance and of indices of happiness and a decreasing of stereotyped behaviors for both participants during intervention phases. Practical, psychological and clinical implications of the findings are discussed.  相似文献   
110.
Background: It was recently suggested that scaling and root planing (SRP) may help to improve glycemic and metabolic control in patients with chronic periodontitis (CP) and type 2 diabetes mellitus (DM2); however, the effectiveness of SRP in this role remains unclear. This meta‐analysis assesses the effectiveness of SRP in improving glycemic and metabolic control in patients with CP and DM2. Methods: A literature search of electronic databases was performed for articles published through May 16, 2012, followed by a manual search of several dental journals. A meta‐analysis was conducted according to the recommendations of the Cochrane Collaboration and the Preferred Reporting Items for Systematic Reviews and Meta‐Analyses (PRISMA). Weighted mean differences (MDs) and 95% confidence intervals (CIs) were calculated for glycated hemoglobin A1c (HbA1c), fasting plasma glucose (FPG), total cholesterol (TC), triglycerides (TG), and high‐ and low‐density lipoprotein cholesterol (HDL and LDL, respectively). All outcomes were evaluated as changes from baseline to the end of follow‐up. Heterogeneity was assessed with the χ2‐based Cochran Q test and I2 statistic. The level of significance was set at P < 0.05. Results: After the study selection process, five randomized clinical trials were included. Results of the meta‐analysis indicated that SRP was effective in the reduction of HbA1c (MD = 0.65; 95% CI 0.43 to 0.88; P <0.05) and FPG (MD = 9.04; 95% CI 2.17 to 15.9; P <0.05), but no significant differences were found in the reduction of TC, TG, HDL, or LDL. No evidence of heterogeneity was detected. Conclusion: The meta‐analysis results seem to support the effectiveness of SRP in the improvement of glycemic control in patients with CP and DM2; however, future studies are needed to confirm these results.  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