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   198396篇
  免费   2528篇
  国内免费   132篇
耳鼻咽喉   1279篇
儿科学   7172篇
妇产科学   3329篇
基础医学   19476篇
口腔科学   1963篇
临床医学   15151篇
内科学   34994篇
皮肤病学   941篇
神经病学   18434篇
特种医学   9887篇
外科学   31851篇
综合类   2574篇
一般理论   32篇
预防医学   20828篇
眼科学   3219篇
药学   11320篇
中国医学   661篇
肿瘤学   17945篇
  2023年   150篇
  2022年   264篇
  2021年   534篇
  2020年   342篇
  2019年   483篇
  2018年   22402篇
  2017年   17718篇
  2016年   19899篇
  2015年   1506篇
  2014年   1570篇
  2013年   1807篇
  2012年   8638篇
  2011年   22671篇
  2010年   19722篇
  2009年   12438篇
  2008年   20963篇
  2007年   23330篇
  2006年   2043篇
  2005年   3715篇
  2004年   4859篇
  2003年   5716篇
  2002年   3692篇
  2001年   548篇
  2000年   649篇
  1999年   468篇
  1998年   542篇
  1997年   472篇
  1996年   323篇
  1995年   298篇
  1994年   296篇
  1993年   229篇
  1992年   200篇
  1991年   244篇
  1990年   240篇
  1989年   233篇
  1988年   160篇
  1987年   172篇
  1986年   125篇
  1985年   125篇
  1984年   105篇
  1983年   101篇
  1982年   85篇
  1981年   57篇
  1980年   87篇
  1978年   50篇
  1977年   45篇
  1976年   50篇
  1938年   60篇
  1932年   56篇
  1930年   46篇
排序方式: 共有10000条查询结果,搜索用时 16 毫秒
21.
22.
Gastroesophageal reflux is the most common benign disorder of the esophagus and laparoscopic Nissen fundoplication has become the standard surgical treatment for its treatment. In our area, where the use of bougie calibration is debatable, postoperative dysphagia is encountered often after this surgery although it is usually not permanent. The aim of this study was to investigate the effect of using a soft silicone tube 39 F in diameter for esophageal calibration during laparoscopic Nissen fundoplication on the incidence of postoperative dysphagia. We divided cases scheduled to undergo laparoscopic Nissen fundoplication between January 2009 and November 2010 into two groups, each consisting 25 patients. Esophageal calibration with a 39 F silicone orogastric tube was used for the first group while there was no operative calibration in the second group. The surgical duration was recorded; the presence and severity of the postoperative dysphagia was calculated by using a dysphagia severity scoring system during the 1-year postoperative follow-up. The dysphagia severity scores were significantly lower in group 1 than group 2 on the postoperative second day and at the end of the first week and first month. We did not find a significant difference at the end of the 6-month and first year. There was also no significant difference regarding surgery duration. The use of a soft orogastric tube 39 F in diameter for esophagus calibration during laparoscopic Nissen fundoplication has significantly decreased the incidence of postoperative transient dysphagia without affecting the duration of surgery. Although dysphagia gradually resolves in the majority of patients, a safe and easy calibration method for its prevention is worth developing, and we believe that the use of our method in larger series could be beneficial.  相似文献   
23.
24.
25.
Since the introduction of cART (combination antiretroviral therapy), HIV has evolved into a chronic disease such that it requires lifelong medical treatment to which patients must adhere. Communication with health care providers is pivotal in supporting patients to adapt to having HIV and adhering to treatment, in order to maintain health and quality of life. Previous research indicates that communication is optimal when it matches patient preferences for information exchange, relationship establishment, and involvement in treatment decisions. The aim of the present study is to explore HIV patient communication preferences as well as patient experiences with their providers (not) matching their preferences. A second aim is to explore provider beliefs about patient preferences and provider views on optimal communication. Data were collected through interviews with 28 patients and 11 providers from two academic hospitals. Results indicate that patient preferences reflect their cognitive, emotional, and practical needs such that patients look to increase their sense of control over their HIV. Patients aim to further increase their sense of control (by proxy) through their relationship with their providers and through their decisional involvement preferences. Providers are well aware of patient communication preferences but do not explicate underlying control needs. Implications for clinical practice are discussed.  相似文献   
26.
27.
28.
29.
30.
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