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   39396篇
  免费   2843篇
  国内免费   535篇
耳鼻咽喉   805篇
儿科学   477篇
妇产科学   506篇
基础医学   6355篇
口腔科学   1000篇
临床医学   3476篇
内科学   7640篇
皮肤病学   1530篇
神经病学   2963篇
特种医学   2355篇
外国民族医学   3篇
外科学   5078篇
综合类   377篇
现状与发展   3篇
一般理论   15篇
预防医学   1501篇
眼科学   872篇
药学   3784篇
  3篇
中国医学   658篇
肿瘤学   3373篇
  2023年   215篇
  2022年   722篇
  2021年   1542篇
  2020年   826篇
  2019年   1126篇
  2018年   1346篇
  2017年   1079篇
  2016年   1532篇
  2015年   2165篇
  2014年   2363篇
  2013年   2685篇
  2012年   3936篇
  2011年   3641篇
  2010年   2208篇
  2009年   1814篇
  2008年   2428篇
  2007年   2146篇
  2006年   1817篇
  2005年   1720篇
  2004年   1342篇
  2003年   1171篇
  2002年   999篇
  2001年   520篇
  2000年   460篇
  1999年   381篇
  1998年   198篇
  1997年   172篇
  1996年   111篇
  1995年   94篇
  1994年   95篇
  1993年   80篇
  1992年   141篇
  1991年   156篇
  1990年   128篇
  1989年   117篇
  1988年   96篇
  1987年   87篇
  1986年   92篇
  1985年   70篇
  1984年   59篇
  1983年   48篇
  1981年   36篇
  1979年   61篇
  1978年   41篇
  1977年   33篇
  1975年   56篇
  1974年   36篇
  1972年   41篇
  1971年   49篇
  1970年   34篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
本文通过对《中医基本名词术语中英对照国际标准》和《WHO西太平洋地区传统医学名词术语国际标准》舌诊术语进行比较,分析两部标准中舌诊术语英译的优缺点,提出更适宜优先选择作为中医舌诊术语英译标准的方案,以期为中医名词术语标准化工作提供参考。  相似文献   
5.
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   
6.
7.
ABSTRACT

Purpose

Work-related eye injuries have been reported with a variety of epidemiologic and clinical characteristics. We aimed to identify epidemiologic characteristics of work-related eye injuries and risk factors associated with severe injury in a large metropolitan city.  相似文献   
8.
Scrub typhus usually presents as acute undifferentiated fever. This cross-sectional study included adult patients presenting with acute undifferentiated fever defined as any febrile illness for ≤ 14 days without evidence of localized infection. Scrub typhus cases were defined by an antibody titer of a ≥ fourfold increase in paired sera, a ≥ 1:160 in a single serum using indirect immunofluorescence assay, or a positive result of the immunochromatographic test. Multiple regression analysis identified predictors associated with scrub typhus to develop a prediction rule. Of 250 cases with known etiology of acute undifferentiated fever, influenza (28.0%), hepatitis A (25.2%), and scrub typhus (16.4%) were major causes. A prediction rule for identifying suspected cases of scrub typhus consisted of age ≥ 65 years (two points), recent fieldwork/outdoor activities (one point), onset of illness during an outbreak period (two points), myalgia (one point), and eschar (two points). The c statistic was 0.977 (95% confidence interval = 0.960–0.994). At a cutoff value ≥ 4, the sensitivity and specificity were 92.7% (79.0–98.1%) and 90.9% (86.0–94.3%), respectively. Scrub typhus, the third leading cause of acute undifferentiated fever in our region, can be identified early using the prediction rule.  相似文献   
9.
A classic pilomatricoma, which usually presents with an asymptomatic, solitary, firm, subcutaneous nodule in the head, neck, or extremities of the paediatric population, is easily diagnosed based on its characteristic clinical and histopathological features. However, its variants often pose particular diagnostic challenges to clinicians due to their rarity and diverse clinicopathological features. We present a new pseudocystic variant, manifesting as solid lesions floating in a fluid‐filled sac.  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