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   178650篇
  免费   1083篇
  国内免费   6篇
耳鼻咽喉   1159篇
儿科学   6693篇
妇产科学   3048篇
基础医学   16965篇
口腔科学   1654篇
临床医学   12601篇
内科学   31601篇
皮肤病学   759篇
神经病学   16870篇
特种医学   8979篇
外科学   29195篇
综合类   2329篇
一般理论   2篇
预防医学   18329篇
眼科学   2751篇
药学   9646篇
中国医学   626篇
肿瘤学   16532篇
  2023年   38篇
  2022年   49篇
  2021年   102篇
  2020年   63篇
  2019年   83篇
  2018年   21998篇
  2017年   17420篇
  2016年   19582篇
  2015年   992篇
  2014年   898篇
  2013年   912篇
  2012年   7177篇
  2011年   21210篇
  2010年   18897篇
  2009年   11606篇
  2008年   19633篇
  2007年   21851篇
  2006年   693篇
  2005年   2330篇
  2004年   3505篇
  2003年   4465篇
  2002年   2624篇
  2001年   291篇
  2000年   423篇
  1999年   195篇
  1998年   248篇
  1997年   248篇
  1996年   132篇
  1995年   128篇
  1994年   142篇
  1993年   92篇
  1992年   85篇
  1991年   128篇
  1990年   173篇
  1989年   110篇
  1988年   86篇
  1987年   72篇
  1986年   64篇
  1985年   70篇
  1984年   42篇
  1983年   46篇
  1982年   64篇
  1980年   60篇
  1978年   39篇
  1976年   32篇
  1974年   38篇
  1938年   60篇
  1934年   31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 0 毫秒
81.
82.
Acute stroke affects large numbers of people worldwide. It causes significant morbidity and mortality. Data support the hypothesis that the public is not familiar with either the risk factors or the signs of stroke. Educating the public about stroke may result in a lower incidence of the disease as individuals modify their risk factors, and in improved outcomes as a result of reductions in delays to treatment. There is clear and convincing evidence that reducing delays to treatment of patients with acute stroke results in improved outcomes. Public education programs should be broad-based, tailored to individual audiences, and carry a common theme.  相似文献   
83.
84.
85.
86.
Two cases are reported in which, after ACL reconstruction with autologous hamstring grafts, tibial polylactide interference screws migrated into the knee joint. Clinically, both patients presented with recurrent locking of the joint. In one case, a broken 15 mm-long tip of the screw was found intra-articularly. In the other case, the whole screw had migrated into the joint cavity. The degradation process of polylactic acid, operative technique and bone quality are discussed as possible reasons for these complications.  相似文献   
87.
88.
The main reasons impeding further development and improvement of the Phthisioophthalmologic Service in the RSFSR were studied and defined on the basis of statistical and investigation data on phthisioophthalmology.  相似文献   
89.
Our group has previously reported significant changes in the incorporation of precursors into glycerophospholipids, particularly phosphatidylserine, in polymorphonuclear cells obtained from the peripheral blood of cluster headache patients, when compared with controls. The potential of these results led to further work using both the previous methodology and a modified isolation technique to obtain polymorphonuclear cells in as pure a state as possible. Neither the new results obtained using the original technique, nor the results with high purity polymorphonuclear cells from controls and cluster headache patients, confirm the marked changes in precursor uptake into glycerophospholipids originally reported.  相似文献   
90.
Intraosseous ganglia of the glenoid are rare, and their etiology is unknown. This report describes a case of an intraosseous ganglion about to cause fracture of the glenoid. The patient was a 61-year-old woman with a painful left shoulder with a limited range of motion. Her symptoms did not improve after non-operative treatment. Arthroscopic examination showed a cartilage defect and erosion in the posteroinferior portion of the glenoid, behind which computed tomography (CT) showed a cystic lesion of the glenoid. There was no communication between the cyst and the joint space. The patient was treated by curettage and an autogenous cancellous bone graft from the iliac crest. Two years after the operation, the patient was almost free from pain, and CT showed good integration of the bone graft.  相似文献   
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