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   9595篇
  免费   489篇
  国内免费   85篇
耳鼻咽喉   72篇
儿科学   225篇
妇产科学   314篇
基础医学   978篇
口腔科学   175篇
临床医学   816篇
内科学   2609篇
皮肤病学   81篇
神经病学   1004篇
特种医学   470篇
外科学   1372篇
综合类   23篇
一般理论   3篇
预防医学   405篇
眼科学   135篇
药学   594篇
中国医学   19篇
肿瘤学   874篇
  2023年   48篇
  2022年   139篇
  2021年   281篇
  2020年   152篇
  2019年   246篇
  2018年   312篇
  2017年   230篇
  2016年   258篇
  2015年   286篇
  2014年   388篇
  2013年   480篇
  2012年   763篇
  2011年   725篇
  2010年   387篇
  2009年   407篇
  2008年   589篇
  2007年   572篇
  2006年   579篇
  2005年   583篇
  2004年   526篇
  2003年   507篇
  2002年   441篇
  2001年   108篇
  2000年   92篇
  1999年   98篇
  1998年   88篇
  1997年   88篇
  1996年   73篇
  1995年   55篇
  1994年   51篇
  1993年   33篇
  1992年   55篇
  1991年   48篇
  1990年   45篇
  1989年   29篇
  1988年   46篇
  1987年   30篇
  1986年   38篇
  1985年   39篇
  1984年   24篇
  1983年   28篇
  1982年   28篇
  1981年   25篇
  1980年   19篇
  1979年   17篇
  1978年   22篇
  1977年   12篇
  1974年   8篇
  1972年   13篇
  1968年   7篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Henoch‐Schonlein purpura (HSP) is the most common systemic vasculitis in childhood. There is no consensus about the management for isolated cutaneous manifestations in HSP. We describe a case of HSP presenting with severe skin lesions that did not respond to standard therapy with corticosteroids. The 11‐year‐old child was treated with intravenous immunoglobulins, which induced rapid and persistent resolution of symptomatology.  相似文献   
2.
3.
Even if the relationships between nutrition and inflammatory bowel disease (IBD) remain underexplored, the current literature is providing, day by day, much more evidence on the effects of various diets in both prevention and treatment of such illnesses. Wrong dietary habits, together with other environmental factors such as pollution, breastfeeding, smoke, and/or antibiotics, are among the theoretical pathogenetic causes of IBD, whose multifactorial aetiology has been already confirmed. While some of these risk factors are potentially reversible, some others cannot be avoided, and efficient treatments become necessary to prevent IBD spread or recurrence. Furthermore, the drugs currently available for treatment of such disease provide low-to-no effect against the symptoms, making the illnesses still strongly disabling. Whether nutrition and specific diets will prove to effectively interrupt the course of IBD has still to be clarified and, in this sense, further research concerning the applications of such dietary interventions is still needed.  相似文献   
4.
5.
6.
Objectives. Traditional deep brain stimulation (DBS) at the subthalamic nucleus (STN) has proved to be efficacious on core Parkinsonian symptoms. However, very disabling l ‐dopa–induced abnormal involuntary movements (AIMs) and axial signs are slightly affected, suggesting that we target less conventional targets. Our candidates for DBS were the globus pallidus internus (GPi) plus the intralaminar thalamic complex (Pf or CM), given its extensive functional links with basal ganglia nuclei. Materials and Methods. The routine utilization of our innovative stereotactic apparatus allows us to implant, at the same time, both the CM‐Pf complex together with the GPi in six Parkinson disease patients. Both intraoperative and postoperative neurophysiologic assessments helped us recognize functional subregions while optimizing implantation of electrodes. Unified Parkinson disease rating scale (UPDRS) motor scores, AIMs, and freezing were carefully blindly evaluated for each condition. Results. A significant amelioration of UPDRS scores was achieved by simultaneous activation of both targets. CM‐Pf activation was only slightly effective in reducing rigidity and akinesia, but more efficacious on freezing. Not surprisingly, AIMs were peculiarly decreased by the activation of the permanent electro‐catheter in the posteroventral GPi. Conclusions. These findings confirm that, in selected patients, it is conceivable to target structures other than the conventional STN in order to maximize clinical benefit.  相似文献   
7.
Idiopathic Headache as a Possible Risk Factor for Phantom Tooth Pain   总被引:1,自引:0,他引:1  
Following tooth pulp extirpation, some subjects suffer from persistent pain which affects edentate sites in absence of any local pathology. As regards this peculiar pain, called phantom tooth pain (PTP), what is puzzling is the fact there is a low prevalence of PTP in a very large population showing identical conditions of tooth pulp extirpation. The present investigation indicates that PTP mainly affects migraine (M) and cluster headache (CH) sufferers, whereas it does not affect subjects who have a negative personal and family history for idiopathic headache (IH). These results circumscribe the presence of PTP to a specific section of the population. The present results, besides indicating that PTP may be the result of a peculiar neuronal predisposition relating to IH pathogenesis, suggests some practical therapeutic hints. In fact, successful anti- M and anti-CH prophylactic treatment greatly improve PTP syndrome.  相似文献   
8.
9.
Hum Psychopharmacol 2007; 22 : 121–128. DOI: 10.1002/hup.836 It has come to our attention that there was an error contained in the above article within the abstracts heading relating to Methods. The article stated that: ‘A literature search was conducted within PsychoINFO’. This should have been published as: ‘A literature search was conducted within PsycINFO’. We apologise for this anomaly.  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