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   29698篇
  免费   1365篇
  国内免费   203篇
耳鼻咽喉   322篇
儿科学   545篇
妇产科学   721篇
基础医学   3443篇
口腔科学   1524篇
临床医学   2245篇
内科学   7992篇
皮肤病学   444篇
神经病学   2768篇
特种医学   1122篇
外科学   4283篇
综合类   114篇
一般理论   7篇
预防医学   1571篇
眼科学   433篇
药学   1627篇
中国医学   119篇
肿瘤学   1986篇
  2023年   176篇
  2022年   426篇
  2021年   808篇
  2020年   458篇
  2019年   639篇
  2018年   821篇
  2017年   578篇
  2016年   703篇
  2015年   808篇
  2014年   1118篇
  2013年   1500篇
  2012年   2300篇
  2011年   2460篇
  2010年   1416篇
  2009年   1254篇
  2008年   2142篇
  2007年   2192篇
  2006年   2021篇
  2005年   2028篇
  2004年   1807篇
  2003年   1561篇
  2002年   1450篇
  2001年   191篇
  2000年   126篇
  1999年   170篇
  1998年   241篇
  1997年   192篇
  1996年   188篇
  1995年   146篇
  1994年   133篇
  1993年   92篇
  1992年   96篇
  1991年   98篇
  1990年   79篇
  1989年   74篇
  1988年   77篇
  1987年   58篇
  1986年   51篇
  1985年   49篇
  1984年   88篇
  1983年   57篇
  1982年   73篇
  1981年   45篇
  1980年   28篇
  1979年   24篇
  1978年   27篇
  1977年   30篇
  1976年   21篇
  1974年   18篇
  1973年   22篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
We report a case of a prepubertal girl with juvenile primary hypothyroidism presenting as ovarian cysts and precocious puberty. The 7-year-old female was referred to our clinic because of a pelvic/abdominal mass and vaginal bleeding. Besides these findings, on physical examination we noticed the thyroid gland globally increased and the presence of secondary sexual characteristics. Based upon the clinical profile and investigations, the patient was diagnosed with juvenile primary hypothyroidism due to autoimmune thyroiditis. The cysts and precocious puberty resolved spontaneously after the simple replacement of thyroid hormone. It is important to bear in mind hypothyroidism in cases of girls presenting ovarian cysts and precocious puberty in order to avoid unnecessary surgery on the ovaries.  相似文献   
4.
5.
6.
7.
A common factor V gene haplotype, the FVR2 haplotype (FVHR2), has been associated with a reduced cofactor activity in activated protein C-mediated activated factor VIII inactivation. Our aim was to investigate the role of FVHR2 as a possible determinant of factor VIII levels in a population study. A total of 516 individuals (401 men, 115 women; mean age 58.4 +/- 10.8 years) were enrolled within the frame of a regional cardiovascular survey, characterized for factor VIII coagulant activity (FVIII:c) and factor V coagulant activity (FV:c) levels, and genotyped for factor V polymorphisms. In men without signs of overt inflammation, FVHR2 carriers had higher levels of FVIII:c than noncarriers (154 IU/dl, 95% confidence interval = 143-166 versus 142 IU/dl, 95% confidence interval = 138-147; P = 0.045) and were more represented in individuals with high (> or = 150 IU/dl) FVIII:c levels (21.2 versus 10.8%; odds ratio = 2.27, 95% confidence interval = 1.17-4.39 after adjustment for age, blood group and high-sensitivity C-reactive protein levels). In conclusion, this clinical report suggests the common FVHR2 as a possible independent determinant of FVIII:c levels. The report concomitantly addresses the relationship between factor V and factor VIII levels and supports the hypothesis of a mild prothrombotic role of FVHR2 by means of increased factor VIII levels.  相似文献   
8.
9.
A case of actinomycotic brain infection in a juvenile patient is described. Cases of actinomycosis affecting the head and neck are rare, particularly in juvenile patients. In this case complete resolution of the infection was achieved by means of surgical treatment and prolonged antibiotic therapy. The authors emphasize the importance of a combined approach for treatment of this unusual brain infection and stress the difficulties involved in the diagnosis of this pathology. Received: 3 November 1997  相似文献   
10.
We have reviewed the incidence of cisplatin-induced anaemia in patients affected with solid tumours treated with at least three courses of first-line cisplatincontaining regimens. In our experience, a low percentage (5%) of patients required transfusions of red blood cells. We think it is of the utmost importance to adopt uniform criteria in monitoring and treatment of patients at risk of developing cisplatin anaemia and to identify subsets of patients to eventually treat with erythropoietin.  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