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   39837篇
  免费   3522篇
  国内免费   80篇
耳鼻咽喉   439篇
儿科学   1297篇
妇产科学   992篇
基础医学   5210篇
口腔科学   886篇
临床医学   4515篇
内科学   7755篇
皮肤病学   501篇
神经病学   3381篇
特种医学   1237篇
外科学   6110篇
综合类   864篇
一般理论   59篇
预防医学   4119篇
眼科学   765篇
药学   3054篇
中国医学   33篇
肿瘤学   2222篇
  2023年   187篇
  2022年   241篇
  2021年   761篇
  2020年   448篇
  2019年   754篇
  2018年   856篇
  2017年   628篇
  2016年   627篇
  2015年   743篇
  2014年   1117篇
  2013年   1587篇
  2012年   2371篇
  2011年   2443篇
  2010年   1332篇
  2009年   1232篇
  2008年   2178篇
  2007年   2237篇
  2006年   2214篇
  2005年   2230篇
  2004年   2056篇
  2003年   1859篇
  2002年   1747篇
  2001年   837篇
  2000年   874篇
  1999年   802篇
  1998年   492篇
  1997年   389篇
  1996年   383篇
  1995年   345篇
  1994年   305篇
  1993年   287篇
  1992年   574篇
  1991年   623篇
  1990年   579篇
  1989年   533篇
  1988年   492篇
  1987年   505篇
  1986年   459篇
  1985年   441篇
  1984年   397篇
  1983年   344篇
  1982年   247篇
  1981年   244篇
  1980年   191篇
  1979年   273篇
  1978年   223篇
  1977年   207篇
  1974年   231篇
  1973年   227篇
  1972年   182篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
3.
4.
5.
6.
In both adults and children with diabetes, technologies such as continuous subcutaneous insulin infusion using insulin pumps and continuous glucose monitoring can help improve diabetes control, reduce hypoglycaemia and improve quality of life. Access to these technologies in the UK is very variable. Some technologies are recommended by the National Institute for Health and Care Excellence, while others have not been appraised, and new technologies are emerging all the time. Additionally, different guidelines for adults and children further complicate access to diabetes technology in the transition from paediatric to adult care. Against this background, Diabetes UK and NHS England have brought together a multidisciplinary group of experts, including clinicians and people with diabetes, to develop this consensus guideline, combining the different technologies into a common pathway to aid clinical and policy decision‐making. We created a pathway that supports the incremental addition of technology as monotherapy and then dual therapy in the same way that we incrementally add in therapeutic agents to support people with Type 2 diabetes to achieve their personalized glycaemic targets. The pathway emphasizes the importance of structured education, specialist support and appropriate access to psychological therapies, as essential pillars for optimized use of diabetes‐related technology, and recommends the re‐evaluation of its use when the individual is unable either to use the technology appropriately or to achieve the intended outcomes. This pathway is endorsed by UK‐wide clinical and patient associations and we recommend that providers and commissioners use it to ensure the right individual with diabetes has access to the right technology in a timely way to help achieve better outcomes.  相似文献   
7.
Recent work suggests that while voluntary episodic memory declines with age, involuntary episodic memory, which comes to mind spontaneously without intention, remains relatively intact. However, the neurophysiology underlying these differences has yet to be established. The current study used electroencephalography (EEG) to investigate voluntary and involuntary retrieval in older and younger adults. Participants first encoded sounds, half of which were paired with pictures, the other half unpaired. EEG was then recorded as they listened to the sounds, with participants in the involuntary group performing a sound localization cover task, and those in the voluntary group additionally attempting to recall the associated pictures. Participants later reported which sounds brought the paired picture to mind during the localization task. Reaction times on the localization task were slower for voluntary than involuntary retrieval and for paired than unpaired sounds, possibly reflecting increased attentional demands of voluntary retrieval and interference from reactivation of the associated pictures respectively. For the EEG analyses, young adults showed greater alpha event-related desynchronization (ERD) during voluntary than involuntary retrieval at frontal and occipital sites, while older adults showed pronounced alpha ERD regardless of intention. Additionally, older adults showed greater ERD for paired than unpaired sounds at occipital sites, likely reflecting visual reactivation of the associated pictures. Young adults did not show this alpha ERD memory effect. Taken together, these data suggest that involuntary memory is largely preserved with age, but this may be due to older adults' greater recruitment of top-down control even when demand for such control is limited.  相似文献   
8.
Quality of Life Research - This study investigated the PROMIS Self-Efficacy Measure for Managing Chronic Conditions (PROMIS-SE) domain distributions and examined the factor structure of the...  相似文献   
9.
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