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   176328篇
  免费   1035篇
  国内免费   53篇
耳鼻咽喉   1150篇
儿科学   6679篇
妇产科学   3044篇
基础医学   16682篇
口腔科学   1578篇
临床医学   12497篇
内科学   30987篇
皮肤病学   678篇
神经病学   16498篇
特种医学   9043篇
外科学   28784篇
综合类   2315篇
一般理论   2篇
预防医学   18158篇
眼科学   2748篇
药学   9527篇
  1篇
中国医学   623篇
肿瘤学   16422篇
  2022年   32篇
  2021年   39篇
  2020年   21篇
  2019年   44篇
  2018年   21950篇
  2017年   17388篇
  2016年   19559篇
  2015年   948篇
  2014年   852篇
  2013年   807篇
  2012年   7003篇
  2011年   21043篇
  2010年   18837篇
  2009年   11547篇
  2008年   19499篇
  2007年   21739篇
  2006年   565篇
  2005年   2181篇
  2004年   3368篇
  2003年   4334篇
  2002年   2497篇
  2001年   271篇
  2000年   415篇
  1999年   175篇
  1998年   251篇
  1997年   260篇
  1996年   149篇
  1995年   148篇
  1994年   129篇
  1993年   91篇
  1992年   44篇
  1991年   99篇
  1990年   136篇
  1989年   98篇
  1988年   82篇
  1987年   66篇
  1986年   40篇
  1985年   49篇
  1984年   32篇
  1983年   33篇
  1982年   35篇
  1980年   54篇
  1970年   21篇
  1969年   21篇
  1938年   60篇
  1937年   25篇
  1935年   22篇
  1934年   30篇
  1932年   56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.
32.
Outpatient anterior chamber lens implantation   总被引:1,自引:0,他引:1  
100 outpatient and 143 inpatient intracapsular cataract extractions with anterior chamber lens implantation were examined 6 months post-operatively. 74 (74%) in the former and 107 (75%) in the latter achieved visual acuity greater than or equal to 0.5. Excluding non-surgical pathology, 93% in the outpatient group and 98% in the inpatient group had a visual acuity greater than or equal to 0.5 (P = 0.12). There were no significant differences in post-operative complications except for the incidence of cystoid macular edema. Six (6%) of the outpatient and 1 (0.7%) of the inpatient procedures had cystoid macular edema that resulted in a visual acuity below 0.5 (P = 0.02).  相似文献   
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