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   763篇
  免费   36篇
  国内免费   5篇
耳鼻咽喉   4篇
儿科学   101篇
妇产科学   13篇
基础医学   65篇
口腔科学   11篇
临床医学   46篇
内科学   162篇
皮肤病学   10篇
神经病学   17篇
特种医学   92篇
外科学   59篇
综合类   67篇
预防医学   37篇
眼科学   13篇
药学   73篇
中国医学   1篇
肿瘤学   33篇
  2022年   10篇
  2021年   11篇
  2020年   11篇
  2019年   7篇
  2018年   18篇
  2017年   18篇
  2016年   16篇
  2015年   21篇
  2014年   13篇
  2013年   25篇
  2012年   42篇
  2011年   38篇
  2010年   36篇
  2009年   25篇
  2008年   20篇
  2007年   22篇
  2006年   29篇
  2005年   26篇
  2004年   17篇
  2003年   17篇
  2002年   27篇
  2001年   33篇
  2000年   19篇
  1999年   18篇
  1998年   33篇
  1997年   25篇
  1996年   20篇
  1995年   16篇
  1994年   16篇
  1993年   11篇
  1992年   5篇
  1991年   3篇
  1990年   7篇
  1989年   17篇
  1988年   14篇
  1987年   20篇
  1986年   15篇
  1985年   11篇
  1984年   7篇
  1983年   8篇
  1982年   6篇
  1981年   6篇
  1980年   7篇
  1979年   3篇
  1978年   5篇
  1977年   5篇
  1976年   4篇
  1975年   12篇
  1972年   2篇
  1968年   2篇
排序方式: 共有804条查询结果,搜索用时 15 毫秒
1.
The purpose of this study is to show the spectrum of adjacent organ invasion and to make a brief review of hepatic alveolar hydatid disease (AHD), using CT and MR imaging. We retrospectively reviewed CT and MR images of three patients with various adjacent organ invasions surgically and histologically proven to be AHD. Local invasion to right kidney and adrenal, right hemidiaphragm and lung were detected in one patient, right adrenal in another patient and gall bladder, duodenum, gastric wall and pancreas invasion in the other. AHD may rarely extend to the gall bladder, stomach, duodenum, pancreas, right adrenal and kidney, diaphragm, pleura and lung. The extension of the disease outside the liver is usually encountered in patients with large, peripherally located masses in the advanced stage of the disease.  相似文献   
2.
3.
The pregnancy related changes in fetal haemoglobin (HbF) have been observed in 152 pregnancies in 125 women with homozygous sickle cell (SS) disease and related to steady state levels in the same individual. Statistically significant increases in the first and second trimesters, were followed by significant falls below steady state levels in the third trimester and postpartum period. Although these corresponded to a mean increase of 0.7% and a mean decrease of 1.6%, much greater changes occurred in some individuals. Mean levels had not returned to steady state values 1 year after delivery. The hormonal changes in pregnancy appear to have profound effects on HbF level in SS disease, the mechanisms of which require further study.  相似文献   
4.
Deprivation of form vision by the fitting of translucent occluders suppressed the diurnal cycling of enkephalinergic amacrine cells (the ENSLI amacrine cells), in the chicken. Daily periods of normal vision or enforcing temporal contrast using strobe lighting appeared to restore normal functioning of the ENSLI cells. These results suggest that the ENSLI cells are involved in retinal circuits that assess the quality of the visual image and control eye growth.  相似文献   
5.
Two cases of acute polymyosotis associated with W. bancrofti , presented with generalised painful swelling and weakness of the muscles. These patients had elevated muscle enzymes, a myopathic EMG pattern, inflammatory myopathy on biopsy and W. bancrofti in the peripheral blood smear. The clinical, improvement of the disorder and total clearance of microfilariae was obtained with the combination therapy of steroid and diethyl-carbamazine in comparison with steroid alone.  相似文献   
6.
This review of the current scenario of celiac disease (CD) in India covers both pediatric and adult CD. CD is primarily reported from northern India with isolated case reports from the rest of the country. CD cases among Indian children are associated with multiple DR3-DQ2 haplotypes. Delay in diagnosis is contributed by multiple factors including atypical presentations. Use of serological tests, IgA EMA and anti-tTG antibodies, along with modified ESPGHAN criteria provides a definitive diagnosis of CD. Dietary management is often difficult due to non-availability of labeled and marketed gluten-free foods. A majority of children with CD show normalization of nutrition, substantial improvement in growth parameters and attainment of healthy percentile curves on gluten-free diet. Small bowel histology remarkably improves but does not normalize even after 2-3 years on gluten-free diet. The true burden of the disease should be addressed by large epidemiological studies.  相似文献   
7.
8.
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