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   2351712篇
  免费   171362篇
  国内免费   3336篇
耳鼻咽喉   32060篇
儿科学   75935篇
妇产科学   62705篇
基础医学   348322篇
口腔科学   63714篇
临床医学   211589篇
内科学   457510篇
皮肤病学   51766篇
神经病学   185395篇
特种医学   88065篇
外国民族医学   489篇
外科学   354034篇
综合类   47551篇
现状与发展   12篇
一般理论   852篇
预防医学   182882篇
眼科学   54329篇
药学   175261篇
  11篇
中国医学   4576篇
肿瘤学   129352篇
  2021年   18995篇
  2019年   19558篇
  2018年   27084篇
  2017年   20388篇
  2016年   22764篇
  2015年   25657篇
  2014年   36118篇
  2013年   54025篇
  2012年   74736篇
  2011年   79498篇
  2010年   47094篇
  2009年   44606篇
  2008年   74669篇
  2007年   79545篇
  2006年   80358篇
  2005年   77852篇
  2004年   74432篇
  2003年   71748篇
  2002年   69422篇
  2001年   108772篇
  2000年   111483篇
  1999年   93535篇
  1998年   27004篇
  1997年   23674篇
  1996年   24069篇
  1995年   22727篇
  1994年   20901篇
  1993年   19724篇
  1992年   72050篇
  1991年   70116篇
  1990年   68423篇
  1989年   65694篇
  1988年   60328篇
  1987年   59146篇
  1986年   55240篇
  1985年   53033篇
  1984年   39334篇
  1983年   33413篇
  1982年   19878篇
  1979年   35899篇
  1978年   25664篇
  1977年   21248篇
  1976年   20343篇
  1975年   21828篇
  1974年   26163篇
  1973年   24816篇
  1972年   23209篇
  1971年   22055篇
  1970年   20267篇
  1969年   19320篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
102.
103.

Background

The ZOE-50 (NCT01165177) and ZOE-70 (NCT01165229) phase 3 clinical trials showed that the adjuvanted recombinant zoster vaccine (RZV) was ≥90% efficacious in preventing herpes zoster in adults. Here we present a comprehensive overview of the safety data from these studies.

Methods

Adults aged ≥50 (ZOE-50) and ≥70 (ZOE-70) years were randomly vaccinated with RZV or placebo. Safety analyses were performed on the pooled total vaccinated cohort, consisting of participants receiving at least one dose of RZV or placebo. Solicited and unsolicited adverse events (AEs) were collected for 7 and 30?days after each vaccination, respectively. Serious AEs (SAEs) were collected from the first vaccination until 12?months post-last dose. Fatal AEs, vaccination-related SAEs, and potential immune-mediated diseases (pIMDs) were collected during the entire study period.

Results

Safety was evaluated in 14,645 RZV and 14,660 placebo recipients. More RZV than placebo recipients reported unsolicited AEs (50.5% versus 32.0%); the difference was driven by transient injection site and solicited systemic reactions that were generally seen in the first week post-vaccination. The occurrence of overall SAEs (RZV: 10.1%; Placebo: 10.4%), fatal AEs (RZV: 4.3%; Placebo: 4.6%), and pIMDs (RZV: 1.2%; Placebo: 1.4%) was balanced between groups. The occurrence of possible exacerbations of pIMDs was rare and similar between groups. Overall, except for the expected local and systemic symptoms, the safety results were comparable between the RZV and Placebo groups irrespective of participant age, gender, or race.

Conclusions

No safety concerns arose, supporting the favorable benefit-risk profile of RZV.  相似文献   
104.
105.
106.
The Impella 5.0, a percutaneously inserted left ventricular assist device, has been used to support patients who have severe heart failure or who are undergoing high-risk percutaneous coronary intervention. We report our surgical placement of the Impella 5.0, through a graft sewn to the aorta, to unload the left ventricle of a 59-year-old man who was undergoing venoarterial extracorporeal membrane oxygenation for postcardiotomy shock. The patient underwent successful placement of a long-term left ventricular assist device before his discharge from the hospital. The versatility of the Impella 5.0 is exemplified in this patient who was successfully bridged to long-term support.  相似文献   
107.
The jobs of Latino manual laborers place their mental and physical health at risk. This study evaluates the associations among musculoskeletal pain, mental health, and work organization in Latino manual laborers. Farmworkers and nonfarmworkers (n = 189) in North Carolina were interviewed for self-reported musculoskeletal pain, depressive symptoms, stress, work safety climate, and precarious job status. More nonfarmworkers than farmworkers had neck and shoulder pain, but they did not differ in other areas of musculoskeletal pain. Depressive symptoms had a significant association with neck and shoulder pain (p < .05). Precariousness had a significant association with back pain (p < .05). Farmworker participants had H-2A visas and were afforded some protection compared to nonfarmworker manual workers. Research is needed to improve policy that relieves pain and improves mental health for all Latino manual workers.  相似文献   
108.
109.
110.
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