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   184805篇
  免费   1788篇
  国内免费   47篇
耳鼻咽喉   1197篇
儿科学   6936篇
妇产科学   3246篇
基础医学   18062篇
口腔科学   1616篇
临床医学   13420篇
内科学   32781篇
皮肤病学   908篇
神经病学   17508篇
特种医学   9133篇
外科学   29859篇
综合类   2348篇
现状与发展   1篇
一般理论   6篇
预防医学   18811篇
眼科学   2925篇
药学   9977篇
中国医学   634篇
肿瘤学   17272篇
  2024年   37篇
  2023年   146篇
  2022年   250篇
  2021年   515篇
  2020年   328篇
  2019年   490篇
  2018年   22296篇
  2017年   17656篇
  2016年   19814篇
  2015年   1276篇
  2014年   1303篇
  2013年   1322篇
  2012年   7837篇
  2011年   21850篇
  2010年   19236篇
  2009年   11820篇
  2008年   20071篇
  2007年   22243篇
  2006年   1061篇
  2005年   2725篇
  2004年   3808篇
  2003年   4730篇
  2002年   2824篇
  2001年   306篇
  2000年   429篇
  1999年   200篇
  1998年   282篇
  1997年   264篇
  1996年   119篇
  1995年   127篇
  1994年   115篇
  1993年   78篇
  1992年   40篇
  1991年   84篇
  1990年   127篇
  1989年   76篇
  1988年   52篇
  1987年   42篇
  1986年   27篇
  1985年   35篇
  1984年   23篇
  1983年   24篇
  1982年   28篇
  1980年   42篇
  1938年   60篇
  1937年   25篇
  1935年   23篇
  1934年   32篇
  1932年   58篇
  1930年   47篇
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
31.
Conclusions  Noninvasive imaging of neurohumoral upregulation in remodeled myocardium suggests that an imaging strategy can be developed for predicting the rate of remodeling and likelihood of HF development. This should allow a more judicious use of neurohumoral antagonists especially in subjects who do not have manifest HF.74 In others specific targeted imaging may allow timely selection of individualized treatment strategies and ensure optimization of therapeutic intervention. Similar to ACE and AII receptors, multiple other targets in the hormonal cascades can identify the likelihood of adverse and favorable remodeling.74  相似文献   
32.
33.
Single-agent chemotherapy of metastatic breast cancer is the treatment of choice in patients with slow tumor progression and asymptomatic disease. In this patient group, the choice of drugs is based more on good tolerability than on efficacy. By contrast, symptomatic or rapidly progressing disease requires the use of highly active regimens where more weight is put on reliable antitumor activity. While anthraycline-based combination regimens have set the standard of effective treatment, the addition of docetaxel (and to a lesser extent paclitaxel) has improved tumor response, but failed to induce a consistent prolongation of survival. Based on retrospective analyses, it is hypothesised that the combined use of anthracyclines and taxanes in first-line therapy may be most beneficial in defined subgroups: after adjuvant chemotherapy, in patients with HER-2 gene amplification, possibly also in patients with rapidly progressing visceral disease.  相似文献   
34.
35.
36.
Antegrade interlocking nailing of humeral shaft fractures   总被引:5,自引:0,他引:5  
The results of 39 humeral shaft fractures (37 patients) treated with antegrade locked nailing using a Russell–Taylor nail were reviewed. There were 30 acute fractures, 6 fractures malaligned in a hanging cast or brace, and 3 pathological fractures. Patient age ranged from 26 to 80 years (average, 59.7 years) and average follow-up was 25.7 months (range, 6–48 months). Fracture union was achieved in 92.3% of our cases, while shoulder function was excellent or good in 87.2% of cases. Antegrade locked nailing offers a dependable solution for the treatment of humeral shaft fractures, especially in polytrauma patients and cases of segmental or pathological fractures. Far less satisfactory results were obtained in comminuted fractures of the proximal third in the humerus, especially in osteoporotic patients, and we therefore advocate caution with the use of intramedullary nailing in this type of fracture. Certain technical aspects such as avoiding nailing the fracture in distraction, properly countersinking the tip of the nail, and achieving adequate fixation stability have been found to be of paramount importance to reduce the incidence of delayed union/non-union rate and to obtain better functional results from the shoulder joint.  相似文献   
37.
38.
Conclusion In the year 2003 there is no “one best bariatric operation” for every severely obese patient. The choice of operation must be tailored to each individual patient’s needs and wishes. For the superobese patient, the patient diagnosed with intestinal metaplasia of the stomach, and for those patients who do not wish to undergo the severe dietary restrictions imposed by the RNY-GB, the BPD-DS is a valuable surgical option.  相似文献   
39.
40.
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