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   92815篇
  免费   6651篇
  国内免费   1800篇
耳鼻咽喉   978篇
儿科学   2121篇
妇产科学   1893篇
基础医学   10880篇
口腔科学   3278篇
临床医学   8819篇
内科学   20092篇
皮肤病学   1998篇
神经病学   6328篇
特种医学   2026篇
外国民族医学   6篇
外科学   12044篇
综合类   6390篇
现状与发展   2篇
一般理论   23篇
预防医学   7565篇
眼科学   2026篇
药学   7104篇
  53篇
中国医学   2437篇
肿瘤学   5203篇
  2024年   173篇
  2023年   884篇
  2022年   1997篇
  2021年   3952篇
  2020年   2567篇
  2019年   2836篇
  2018年   3161篇
  2017年   2576篇
  2016年   2405篇
  2015年   3203篇
  2014年   4382篇
  2013年   5192篇
  2012年   7963篇
  2011年   8191篇
  2010年   5203篇
  2009年   4436篇
  2008年   6099篇
  2007年   6129篇
  2006年   5573篇
  2005年   5197篇
  2004年   4215篇
  2003年   3946篇
  2002年   3350篇
  2001年   797篇
  2000年   714篇
  1999年   676篇
  1998年   586篇
  1997年   502篇
  1996年   432篇
  1995年   381篇
  1994年   313篇
  1993年   237篇
  1992年   301篇
  1991年   239篇
  1990年   206篇
  1989年   171篇
  1988年   152篇
  1987年   147篇
  1986年   142篇
  1985年   142篇
  1984年   135篇
  1983年   123篇
  1982年   119篇
  1981年   130篇
  1980年   111篇
  1979年   89篇
  1978年   70篇
  1977年   84篇
  1976年   67篇
  1973年   67篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status...  相似文献   
4.
5.
6.
7.
In the current immunosuppressive therapy era, vessel thrombosis is the most common cause of early graft loss after renal transplantation. The prevalence of IgA anti–β2-glycoprotein I antibodies (IgA-aB2GPI-ab) in patients on dialysis is elevated (>30%), and these antibodies correlate with mortality and cardiovascular morbidity. To evaluate the effect of IgA-aB2GPI-ab in patients with transplants, we followed all patients transplanted from 2000 to 2002 in the Hospital 12 de Octubre prospectively for 10 years. Presence of IgA-aB2GPI-ab in pretransplant serum was examined retrospectively. Of 269 patients, 89 patients were positive for IgA-aB2GPI-ab (33%; group 1), and the remaining patients were negative (67%; group 2). Graft loss at 6 months post-transplant was significantly higher in group 1 (10 of 89 versus 3 of 180 patients in group 2; P=0.002). The most frequent cause of graft loss was thrombosis of the vessels, which was observed only in group 1 (8 of 10 versus 0 of 3 patients in group 2; P=0.04). Multivariate analysis showed that the presence of IgA-aB2GPI-ab was an independent risk factor for early graft loss (P=0.04) and delayed graft function (P=0.04). There were no significant differences regarding patient survival between the two groups. Graft survival was similar in both groups after 6 months. In conclusion, patients with pretransplant IgA-aB2GPI-ab have a high risk of early graft loss caused by thrombosis and a high risk of delayed graft function. Therefore, pretransplant IgA-aB2GPI-ab may have a detrimental effect on early clinical outcomes after renal transplantation.  相似文献   
8.
The current situation in which the humanities are disparaged affects all university disciplines, including nursing, in whose historical evolution the humanities have always been present in one form or another. Looking beyond this disrepute, this study proposes that nursing renew its attention to classical philosophy. Specifically, it invites a close reading of Xenophon's Anabasis and Plato's Meno, to get three related goals: to show how the use of ancient texts are very valuable tools for the philosophical initiation of nursing students and can help them reflect on their choice of nursing as a practical activity; to reflect on the problem of virtue and the nature of the good life; and to show how the interaction with ancient texts allows students to reflect on questions and issues of life, theirs and others, that are not open to investigation through a purely scientific method. Consequently, both Anabasis and Meno readings strengthen the intellectual relationship between philosophy and nursing, enabling the latter to delve deeper into the key questions of its own thought as a discipline.  相似文献   
9.
Lasers in Medical Science - Studies reported the harmful effects of 2,4-D on body tissues, provoking changes in the anatomy and physiology of the kidneys, liver, and testicles. Thus, the objective...  相似文献   
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