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   8852篇
  免费   276篇
  国内免费   13篇
耳鼻咽喉   277篇
儿科学   335篇
妇产科学   413篇
基础医学   614篇
口腔科学   213篇
临床医学   570篇
内科学   1897篇
皮肤病学   333篇
神经病学   418篇
特种医学   608篇
外科学   2271篇
综合类   33篇
预防医学   362篇
眼科学   268篇
药学   121篇
中国医学   2篇
肿瘤学   406篇
  2021年   28篇
  2020年   35篇
  2019年   44篇
  2018年   54篇
  2017年   46篇
  2016年   51篇
  2015年   537篇
  2014年   609篇
  2013年   630篇
  2012年   645篇
  2011年   615篇
  2010年   644篇
  2009年   606篇
  2008年   669篇
  2007年   610篇
  2006年   535篇
  2005年   476篇
  2004年   347篇
  2003年   129篇
  2002年   105篇
  2001年   97篇
  2000年   95篇
  1999年   87篇
  1998年   49篇
  1997年   65篇
  1996年   55篇
  1995年   44篇
  1994年   38篇
  1993年   38篇
  1992年   64篇
  1991年   58篇
  1990年   63篇
  1989年   55篇
  1988年   61篇
  1987年   57篇
  1986年   45篇
  1985年   53篇
  1984年   37篇
  1983年   49篇
  1982年   41篇
  1981年   43篇
  1980年   34篇
  1979年   51篇
  1978年   28篇
  1977年   29篇
  1975年   39篇
  1974年   36篇
  1973年   42篇
  1972年   32篇
  1971年   28篇
排序方式: 共有9141条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
Chronic transplant dysfunction is a complex dynamic pathogenic process. Clinically, a decrease in glomerular filtration rate (GFR) becomes apparent leading to chronic renal insufficiency and dialysis or death from cardiovascular events. Chronic transplant dysfunction can develop into a chronic alIograft nephropathy (CAN) as a specific entity with dynamic progression. CAN includes a collection of immunologic and non-immunologic factors, rejection, ischemia time, donor and recipient characteristics and toxicity of calcineurin inhibitors. Despite improvements in immunosuppression, the long-range prognosis of renal allografts has not improved. Whether modern immunosuppressive concepts with reduction or avoidance of calcineurin inhibitors and a therapy based on antimetabolites, such as mycophenolate or mTOR-inhibitors could lead to a prolongation of transplant survival, remains to be seen.  相似文献   
5.
6.
7.
A national conference on organ donation after cardiac death (DCD) was convened to expand the practice of DCD in the continuum of quality end-of-life care. This national conference affirmed the ethical propriety of DCD as not violating the dead donor rule. Further, by new developments not previously reported, the conference resolved controversy regarding the period of circulatory cessation that determines death and allows administration of pre-recovery pharmacologic agents, it established conditions of DCD eligibility, it presented current data regarding the successful transplantation of organs from DCD, it proposed a new framework of data reporting regarding ischemic events, it made specific recommendations to agencies and organizations to remove barriers to DCD, it brought guidance regarding organ allocation and the process of informed consent and it set an action plan to address media issues. When a consensual decision is made to withdraw life support by the attending physician and patient or by the attending physician and a family member or surrogate (particularly in an intensive care unit), a routine opportunity for DCD should be available to honor the deceased donor's wishes in every donor service area (DSA) of the United States.  相似文献   
8.
In chronic pain syndromes multimodal treatment has proved its efficacy. However, multimodal treatment does not mean randomly combining different interventions in a potpourri of methods. Multimodal treatment must closely follow a well-proved conceptual framework. Those concepts may be well illustrated by therapy of back pain. The most elaborate model for understanding the transition from acute to chronic pain is fear avoidance. Based on this model chronic pain status is understood as a learned consequence, which resulted from patients’ anxious avoidance of body movements. In these cases, treatment of a physical pathology is not the main aim of therapy but rather functional restoration. Those multimodal programs meanwhile have demonstrated their effectiveness. However, good results not only depend on recognition of imperative elements in therapy but also on adhering to essential principles (avoidance of negative anticipation, adequate information with assurance techniques, no training of avoidance, recognition of elements of fear therapy).  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