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   2873篇
  免费   167篇
  国内免费   8篇
耳鼻咽喉   15篇
儿科学   104篇
妇产科学   44篇
基础医学   342篇
口腔科学   197篇
临床医学   144篇
内科学   533篇
皮肤病学   44篇
神经病学   149篇
特种医学   105篇
外科学   479篇
综合类   46篇
一般理论   1篇
预防医学   135篇
眼科学   236篇
药学   361篇
中国医学   24篇
肿瘤学   89篇
  2023年   21篇
  2022年   26篇
  2021年   147篇
  2020年   43篇
  2019年   76篇
  2018年   133篇
  2017年   99篇
  2016年   133篇
  2015年   112篇
  2014年   160篇
  2013年   179篇
  2012年   289篇
  2011年   197篇
  2010年   169篇
  2009年   127篇
  2008年   192篇
  2007年   177篇
  2006年   164篇
  2005年   125篇
  2004年   104篇
  2003年   84篇
  2002年   83篇
  2001年   12篇
  2000年   10篇
  1999年   16篇
  1998年   17篇
  1997年   10篇
  1996年   11篇
  1995年   11篇
  1994年   4篇
  1993年   10篇
  1992年   8篇
  1991年   9篇
  1990年   8篇
  1989年   10篇
  1988年   8篇
  1987年   8篇
  1986年   5篇
  1985年   6篇
  1984年   7篇
  1983年   4篇
  1982年   5篇
  1980年   2篇
  1978年   3篇
  1977年   5篇
  1976年   2篇
  1975年   2篇
  1972年   2篇
  1970年   5篇
  1968年   3篇
排序方式: 共有3048条查询结果,搜索用时 406 毫秒
1.
We report on a child with several café au lait spots in association with a lumbar lipomeningomyelocele as an apparently new association. Cutaneous markers, the identification of which plays a crucial role in the early diagnosis and management of spinal malformations, can accompany occult spinal dysraphism. Herein we report a case of lumbar lipomeningomyelocele associated with an overlying café au lait spot that served as a marker of occult spinal dysraphism. The patient also had segmental café au lait spots on the face, making the association unique.  相似文献   
2.
3.
4.
5.
6.
A case of primary amyloidosis, initially detected by fine-needle aspiration of the liver, is reported here. Amorphous acellular metachromatic material was seen extracellularly in between the hepatocytic cords compressing them. This material showed typical apple-green birefringence under crossed bipolars after alkaline Congo-red staining proved its amyloid nature. It was resistant to potassium permanganate pretreatment, indicating it to be of the AL type. © 1994 Wiley-Liss, Inc.  相似文献   
7.
Summary: This study compares the outcomes of 229 renal transplants, of which 156 were live related renal transplants done at our centre and 73 unrelated transplants done at other centres but followed up at our centre. All the patients were on triple immunosuppression for periods varying between 9 months and 1 year. Patient characteristics, rejections, infections and 1 and 5 years patient and graft survival were analyzed in the two groups. the outcome of patients who continued on cyclosporine beyond 1 year was compared to those who discontinued cyclosporine at 1 year. Males predominated (191 vs 38) in both groups, while younger patients (<50 years) predominated in live related group (152 vs four). There was no difference in the incidence of infection, rejection, graft dysfunction, graft loss or death between the two groups. the 1 and 5 year patient survival in the related and unrelated group, (93.7% and 71.4% vs and 85% and 66%) and graft survival (90.4% and 69.4% vs 83.3% and 65.4%) were similar. However, in the unrelated group, patients who discontinued cyclosporine had a higher incidence of rejections (38% vs 14%) and graft loss (43% vs 11.8%), while in the related group no such difference was found. It is concluded that 1 and 5 year patient and graft survival is comparable between live related and live unrelated transplantation. However, in the unrelated group it is necessary to continue cyclosporine beyond 1 year in order to achieve comparable results.  相似文献   
8.
Inflammatory myopathies like dermatomyositis are associated with increased incidence of malignancies. This association has been commonly reported with malignancies of ovaries, gastro‐intestinal tract, breast and non‐Hodgkin's lymphomas but occurrence of dermatomyositis with bladder cancer has been rarely reported. We report a patient with carcinoma bladder who developed dermatomyositis while being treated for the bladder cancer.  相似文献   
9.
10.
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