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   11001篇
  免费   697篇
  国内免费   24篇
耳鼻咽喉   49篇
儿科学   471篇
妇产科学   392篇
基础医学   1262篇
口腔科学   105篇
临床医学   2185篇
内科学   1787篇
皮肤病学   167篇
神经病学   860篇
特种医学   468篇
外科学   961篇
综合类   127篇
一般理论   49篇
预防医学   1566篇
眼科学   167篇
药学   574篇
中国医学   10篇
肿瘤学   522篇
  2023年   58篇
  2022年   90篇
  2021年   166篇
  2020年   154篇
  2019年   229篇
  2018年   263篇
  2017年   195篇
  2016年   242篇
  2015年   222篇
  2014年   317篇
  2013年   567篇
  2012年   707篇
  2011年   851篇
  2010年   385篇
  2009年   378篇
  2008年   754篇
  2007年   686篇
  2006年   659篇
  2005年   702篇
  2004年   712篇
  2003年   654篇
  2002年   601篇
  2001年   109篇
  2000年   92篇
  1999年   117篇
  1998年   120篇
  1997年   111篇
  1996年   89篇
  1995年   73篇
  1994年   65篇
  1993年   60篇
  1992年   77篇
  1991年   59篇
  1990年   78篇
  1989年   75篇
  1988年   75篇
  1987年   52篇
  1986年   55篇
  1985年   54篇
  1984年   59篇
  1983年   47篇
  1982年   51篇
  1981年   51篇
  1978年   36篇
  1974年   36篇
  1973年   37篇
  1972年   36篇
  1971年   39篇
  1970年   39篇
  1969年   40篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
105.
106.
There is an increasing focus to keep newborns in the hospital safe from falls, as reports indicate that infant falls can occur in the immediate postpartum period. Previous reports have identified factors present at the time of newborn falls, yet there is little information on the prevalence of “near misses” or on risk factors present prior to the occurrence of falls. This article describes an innovative project to prevent newborn falls using information gathered about near misses. Most near misses occurred on the night shift, had the mother holding the baby and occurred an average of 52.6 hours after delivery. Collaboration among staff and patients is crucial to address risk factors present during near misses and to ultimately prevent newborn falls both in the hospital and at home.  相似文献   
107.
Nursing for Women's Health convened a group of nurse researchers for a roundtable discussion about the relationship of research to the profession of nursing, how research drives evidence‐based practice and how nurses can get involved in research and in its application to the care of women and newborns.  相似文献   
108.
In summary, the workshop recommended two years of research training as being essential for radiologists to acquire the skills and knowledge necessary to begin a successful research career in today's funding and academic environment. Many pathways can combine two years of research training and provide fulfillment of existing requirements to achieve specialty certification and subspecialty credentialing. Departments of radiology supporting the beginning qualified investigator should allow him or her approximately 75% research time for the first three years of the academic appointment. Departmental research time accorded faculty members may best be concentrated on a few individuals, providing them sufficient time to be competitive for peer-reviewed grants and enabling research advances to provide a solid foundation for the future of radiologic imaging.  相似文献   
109.
Nineteen unembalmed (fresh) cadavers were used in 21 experiments to test restraint systems in automobile impact studies. Some were mounted in a rearward firing sled; others were placed in standard cars during collisions. Prior to and after testing, each cadaver was evaluated. After each experiment a postmortem examination was performed. High-speed registering cameras (1,000 to 2,000 frames per second) were used and multiple telemetric recordings were made. The radiographic and pathologic changes were similar to those seen in patients following high-velocity accidents. Results were compared with those of car accident victims admitted dead on arrival to one of our hospitals. This study is a progress report. The results are being used to improve existing restraint systems and to evaluate experimental models.  相似文献   
110.
Although magnetic resonance (MR) images of the glenohumeral joint frequently demonstrate intraarticular fluid, no specific criteria have, to the authors' knowledge, been published that allow accurate assessment of the amount of fluid present. Also, despite the increasing use of MR arthrography of the shoulder, the optimal amount of intra-articular fluid that should be used with this technique has not been determined. The authors progressively distended the glenohumeral joint in six cadaveric shoulder specimens with a dilute gadopentetate dimeglumine solution and obtained MR images after injection of 2, 5, 10, 15, and 20 mL of the solution. The pattern of fluid distribution was evaluated, and these results were then used to estimate the amount of fluid that was present in the glenohumeral joint on MR images of 20 shoulders obtained in 12 asymptomatic volunteers. In 14 of these shoulders, intraarticular fluid was present; however, in none was more than 2 mL evident. Results of the cadaveric study also indicated that 15 mL of intraarticular fluid appears to be the optimal amount for MR arthrography.  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