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   170506篇
  免费   62318篇
  国内免费   1080篇
耳鼻咽喉   3444篇
儿科学   6439篇
妇产科学   2933篇
基础医学   18036篇
口腔科学   9784篇
临床医学   35240篇
内科学   45475篇
皮肤病学   10314篇
神经病学   23362篇
特种医学   5576篇
外国民族医学   2篇
外科学   30881篇
综合类   205篇
现状与发展   40篇
一般理论   25篇
预防医学   16618篇
眼科学   3388篇
药学   6522篇
中国医学   1018篇
肿瘤学   14602篇
  2024年   741篇
  2023年   5038篇
  2022年   1149篇
  2021年   3942篇
  2020年   10329篇
  2019年   12721篇
  2018年   15053篇
  2017年   16817篇
  2016年   17814篇
  2015年   17806篇
  2014年   20288篇
  2013年   22583篇
  2012年   7143篇
  2011年   6984篇
  2010年   14533篇
  2009年   13434篇
  2008年   5103篇
  2007年   3122篇
  2006年   4433篇
  2005年   2751篇
  2004年   2131篇
  2003年   1870篇
  2002年   1843篇
  2001年   2775篇
  2000年   2080篇
  1999年   2147篇
  1998年   2142篇
  1997年   1961篇
  1996年   2012篇
  1995年   1747篇
  1994年   1142篇
  1993年   974篇
  1992年   953篇
  1991年   844篇
  1990年   721篇
  1989年   709篇
  1988年   672篇
  1987年   543篇
  1986年   538篇
  1985年   483篇
  1984年   381篇
  1983年   425篇
  1982年   311篇
  1981年   281篇
  1980年   192篇
  1979年   217篇
  1978年   226篇
  1977年   223篇
  1976年   177篇
  1974年   202篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Despite orientation and mobility (O&M) being a significant factor determining quality of life of people with low vision or blindness, there are no gold standard measures or agreement on how to measure O&M performance. In the first part of this systematic review, an inventory of O&M outcome measures used by recent studies to assess the performance of orientation and/or mobility of adults with vision impairment (low vision and blindness) is presented. A wide variety of O&M outcome measures have been implemented in different fields of study, such as epidemiologic research and interventional studies evaluating training, assistive technology, vision rehabilitation and vision restoration. The most frequent aspect of outcome measures is efficiency such as time, distance, speed and percentage of preferred walking speed, followed by obstacle contacts and avoidance, and dis/orientation and veering. Other less commonly used aspects are target identification, safety and social interaction and self-reported outcome measures. Some studies employ sophisticated equipment to capture and analyse O&M performance in a laboratory setting, while others carry out their assessment in real-world indoor or outdoor environments. In the second part of this review, the appropriateness of implementing the identified outcome measures to assess O&M performance in clinical and functional O&M practice is evaluated. Nearly a half of these outcome measures meet all four criteria of face validity (either clinical or functional), responsiveness, reliability and feasibility and have the potential to be implemented in clinical or functional O&M practice. The findings of this review confirm the complicated and dynamic nature of O&M. Multiple measures are required in any evaluation of O&M performance to facilitate holistic assessment of O&M abilities and limitations of each individual.  相似文献   
2.
3.
4.
Although depression is associated to physical discomfort, meanings of the body in depression are rarely addressed in clinical research. Drawing on the concept of the lived body, this study explores depression as an embodied phenomenon. Using a hermeneutic phenomenological approach, the analysis of narrative‐based interviews with 11 depressed adults discloses a thematic structure of an embodied process of an ambiguous striving against fading. Five subthemes elicit different dimensions of this process, interpreted as disabling or enabling: feeling estranged, feeling confined, feeling burdensome, sensing life and seeking belongingness. In relation to clinical practice, we suggest that the interdisciplinary team can focus on enhancing the enabling dimensions, for example through guided physical activities to support the patient to feel more alive, capable and connected. Moreover, we suggest that the treatment process benefits from an increased awareness of the ambiguity in the patient's struggle, acknowledging both destructive and recharging elements of the withdrawing, and the perceived conflict in‐between.  相似文献   
5.
6.
7.
8.
9.
Direct peroral cholangioscopy (POC) using an ultra‐slim upper endoscope is one modality of POC for intraductal endoscopic evaluation and treatment of the bile duct. Choledochoduodenostomy (CDS) is one modality of biliary bypass surgery that provides a new route to the bile duct. We carried out direct POC using an ultra‐slim upper endoscope without the use of accessories in 10 patients (four sump syndromes, three bile duct strictures and three intrahepatic duct stones) previously undergoing surgical CDS. Direct POC was successful in all patients. The use of an intraductal balloon catheter was required in one patient for advancement of the endoscope into the bile duct. Distal bile ducts with sump syndromes were cleared using baskets and water irrigation under direct POC. Cholangiocarcinoma was diagnosed in one patient with hilar bile duct stricture after cholangioscopic evaluation and a targeting forceps biopsy under direct POC. Intrahepatic duct stones were successfully extracted after intraductal fragmentation under direct POC. Oozing bleeding occurred during intraductal lithotripsy but stopped spontaneously. Direct POC using an ultra‐slim upper endoscope without the assistance of accessories can easily be carried out in patients undergoing CDS.  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