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   729104篇
  免费   51582篇
  国内免费   1377篇
耳鼻咽喉   9378篇
儿科学   23838篇
妇产科学   18020篇
基础医学   114021篇
口腔科学   20281篇
临床医学   66002篇
内科学   140123篇
皮肤病学   16785篇
神经病学   51527篇
特种医学   26477篇
外国民族医学   79篇
外科学   108049篇
综合类   15070篇
现状与发展   2篇
一般理论   187篇
预防医学   53198篇
眼科学   16781篇
药学   55471篇
  4篇
中国医学   2409篇
肿瘤学   44361篇
  2019年   5774篇
  2018年   8250篇
  2017年   6373篇
  2016年   7147篇
  2015年   7941篇
  2014年   10846篇
  2013年   16270篇
  2012年   21816篇
  2011年   22975篇
  2010年   13613篇
  2009年   12851篇
  2008年   21411篇
  2007年   23096篇
  2006年   23469篇
  2005年   22112篇
  2004年   21534篇
  2003年   20416篇
  2002年   19906篇
  2001年   36684篇
  2000年   37186篇
  1999年   30739篇
  1998年   8238篇
  1997年   6986篇
  1996年   7248篇
  1995年   6894篇
  1994年   6340篇
  1993年   5809篇
  1992年   23247篇
  1991年   23195篇
  1990年   22561篇
  1989年   22306篇
  1988年   20238篇
  1987年   19608篇
  1986年   18686篇
  1985年   17507篇
  1984年   12894篇
  1983年   10930篇
  1982年   6137篇
  1979年   11648篇
  1978年   8254篇
  1977年   6965篇
  1976年   6705篇
  1975年   7373篇
  1974年   8593篇
  1973年   8230篇
  1972年   7744篇
  1971年   7214篇
  1970年   6933篇
  1969年   6358篇
  1968年   5832篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
FGFR–TACC, found in different tumor types, is characterized by the fusion of a member of fibroblast grown factor receptor (FGFR) tyrosine kinase (TK) family to a member of the transforming acidic coiled-coil (TACC) proteins. Because chromosome numerical alterations, hallmarks of FGFR–TACC fusions are present in many hematological disorders and there are no data on the prevalence, we studied a series of patients with acute myeloid leukemia and myelodysplastic syndrome who presented numerical alterations using cytogenetic traditional analysis. None of the analyzed samples showed FGFR3–TACC3 gene fusion, so screening for this mutation at diagnosis is not recommended.  相似文献   
105.
106.
107.
Traditionally, major complications and unanticipated admission/readmission rates were used to assess outcome after day surgery. However, in view of the relative absence of major complications the quality of recovery (QOR) should be considered one of the principal endpoints after day surgery. In our study, the level of QOR is defined by a combination of the Global Surgical Recovery (GSR) Index and the Quality of Life (QOL).The aim of this study was to analyze prevalence and predictors of QOR after day surgery on the fourth postoperative day.Elective patients scheduled for day surgery from November 2008 to April 2010 were enrolled in a prospective cohort study. Outcome parameters were measured by using questionnaire packages at 2 time points: 1 week preoperatively and 4 days postoperatively. Primary outcome parameter is the QOR and is defined as good if the GSR index >80% as well as the postoperative QOL is unchanged or improved as compared with baseline. QOR is defined as poor if both the GSR index ≤80% and if the postoperative QOL is decreased as compared with baseline. QOR is defined as intermediate in all other cases. Three logistic regression analyses were performed to determine predictors for poor QOR after day surgery.A total of 1118 patients were included. A good QOR was noted in 17.3% of patients, an intermediate QOR in 34.8%, and a poor QOR in 47.8% 4 days after day surgery. The best predictor for poor QOR after day surgery was type of surgery. Other predictors were younger age, work status, and longer duration of surgery. A history of previous surgery, expected pain (by the patient) and high long-term surgical fear were significant predictors of poor QOR in only 1 of 3 prediction models.The QOR at home 4 days after day surgery was poor in the majority of patients and showed a significant procedure-specific variation. Patients at risk for poor QOR can be identified during the preoperative period based on type of surgery, age, work status, and the duration of the surgery.  相似文献   
108.
109.
110.
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