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   187503篇
  免费   1927篇
  国内免费   46篇
耳鼻咽喉   1249篇
儿科学   7002篇
妇产科学   3248篇
基础医学   18172篇
口腔科学   2037篇
临床医学   13448篇
内科学   33553篇
皮肤病学   919篇
神经病学   17448篇
特种医学   9218篇
外科学   30832篇
综合类   2404篇
一般理论   4篇
预防医学   18951篇
眼科学   2871篇
药学   10134篇
中国医学   668篇
肿瘤学   17318篇
  2023年   90篇
  2022年   174篇
  2021年   373篇
  2020年   245篇
  2019年   380篇
  2018年   22311篇
  2017年   17640篇
  2016年   19780篇
  2015年   1258篇
  2014年   1270篇
  2013年   1335篇
  2012年   7744篇
  2011年   21764篇
  2010年   19282篇
  2009年   11954篇
  2008年   20062篇
  2007年   22281篇
  2006年   1135篇
  2005年   2725篇
  2004年   3890篇
  2003年   4769篇
  2002年   2911篇
  2001年   597篇
  2000年   733篇
  1999年   492篇
  1998年   321篇
  1997年   305篇
  1996年   182篇
  1995年   192篇
  1994年   185篇
  1993年   122篇
  1992年   248篇
  1991年   295篇
  1990年   307篇
  1989年   249篇
  1988年   179篇
  1987年   183篇
  1986年   151篇
  1985年   119篇
  1984年   98篇
  1983年   75篇
  1982年   59篇
  1980年   73篇
  1979年   65篇
  1978年   58篇
  1977年   47篇
  1974年   56篇
  1938年   60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 15 毫秒
91.
92.
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   
93.
94.
95.
96.
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   
97.
Depression is common in Parkinson's disease (PD) and affects 30 to 50% of all patients. In contrast to the wealth of research on depression in PD, little is known about the occurrence of depression in other movement disorders. The primary objective of the current study was to determine whether the high prevalence of depression symptoms seen in PD is also found in other movement disorders, by directly comparing rates of specific depression symptoms and depression severity across PD, dystonia, and essential tremor (ET). Three hundred and fifty-four patients with PD, 83 patients with dystonia, and 53 patients with ET completed the Beck Depression Inventory (BDI). We found no significant between-groups differences for depression severity, frequency, or endorsement of specific depression symptoms. Forty-eight percent of PD patients, 37.3% of dystonia patients, and 34% of ET patients were found to be at least mildly depressed (BDI score of 10 or higher). The most commonly endorsed symptoms were fatigability, difficulty with work, anhedonia, and sleep disturbance. Clinicians should be aware that depression is a frequent problem in dystonia and ET, in addition to PD, and inquire about depression symptoms in these patients so that they can be appropriately treated.  相似文献   
98.
99.
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   
100.
BACKGROUND AND OBJECTIVES: To determine differences in the amount of work involved in caring for functionally monocular patients who undergo cataract surgery compared with binocularly sighted patients. PATIENTS AND METHODS: This was a retrospective study that included 100 consecutive functionally monocular patients and 100 binocularly sighted control patients matched by age (+/-5 years) and date of surgery ( +/-1 year). Office records were reviewed to determine several measures of office and operating room work effort. RESULTS: There was no difference between groups in preoperative telephone calls (P = .136), postoperative telephone calls (P = .580), preoperative office visits (P = .875), postoperative office visits (P = .601), or the number of times surgery was scheduled (P = 1.00). Monocular patients required more time for surgery (37.4 minutes) than binocular patients (32.4 minutes) (P= .010). CONCLUSIONS: It takes longer to perform cataract surgery on functionally monocular patients than on binocularly sighted patients.  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