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   128206篇
  免费   7042篇
  国内免费   1316篇
耳鼻咽喉   1857篇
儿科学   6622篇
妇产科学   2805篇
基础医学   11387篇
口腔科学   4579篇
临床医学   9314篇
内科学   28160篇
皮肤病学   3419篇
神经病学   8404篇
特种医学   6027篇
外国民族医学   6篇
外科学   27827篇
综合类   4573篇
现状与发展   3篇
预防医学   7436篇
眼科学   2642篇
药学   6128篇
  5篇
中国医学   1358篇
肿瘤学   4012篇
  2023年   3646篇
  2022年   4640篇
  2021年   6336篇
  2020年   4897篇
  2019年   12084篇
  2018年   9237篇
  2017年   4760篇
  2016年   1803篇
  2015年   2460篇
  2014年   3560篇
  2013年   2451篇
  2012年   1775篇
  2011年   5300篇
  2010年   2083篇
  2009年   2595篇
  2008年   2691篇
  2007年   2206篇
  2006年   1930篇
  2005年   2477篇
  2004年   2382篇
  2003年   1761篇
  2002年   2175篇
  2001年   2441篇
  2000年   3370篇
  1999年   3639篇
  1998年   3348篇
  1997年   2383篇
  1996年   1641篇
  1995年   1188篇
  1994年   1162篇
  1993年   833篇
  1992年   866篇
  1991年   707篇
  1990年   721篇
  1989年   495篇
  1988年   554篇
  1987年   363篇
  1985年   2822篇
  1984年   4105篇
  1983年   2945篇
  1982年   2881篇
  1981年   2727篇
  1980年   2406篇
  1979年   2216篇
  1978年   1823篇
  1977年   1590篇
  1976年   1702篇
  1975年   1441篇
  1974年   1268篇
  1973年   1209篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.

Background

Arterial vascular anomalies in patients undergoing kidney transplantation (KT) are correlated with a higher incidence of early surgical complications, potentially causing graft loss. Arterial reconstruction allows patients to overcome these surgical challenges, thus minimizing the risk of poor outcomes. The aim of the present study is to retrospectively investigate the safety and effectiveness of the multiple arterial reconstruction technique with a Teflon patch in case of an unavailable aortic patch: to do so, surgical complications, graft function, and patient survival were evaluated.

Methods

During the period January 2009 to August 2016, 202 adult deceased-donor KTs were performed at our center. Group A (n = 27; reconstruction of multiple arteries) and Group B (n = 175; control group) were compared.

Results

No differences were observed between the 2 groups in terms of early postoperative course, with no vascular complication observed in Group A. No vascular patch infections were reported, nor longer cold ischemia time rates. Similarly, long-term survival rates were similar between the 2 groups.

Conclusions

The Teflon-patch arterial reconstruction technique appears to be safe and effective, with an acceptable balance of benefits and potential risks of using a prosthetic material. Studies based on larger series are needed to further validate this approach.  相似文献   
92.
93.
2型糖尿病及骨质疏松已成为我国最主要的慢性代谢性疾病。2型糖尿病常伴有血脂紊乱,常表现为低密度脂蛋白升高,而越来越多的研究表明血脂通过不同的方式影响骨代谢,其机制可能是通过抑制骨髓间充质干细胞成骨分化,通过RANK/RNAKL/OPG信号通路及炎症反应调节破骨细胞等方式调节骨代谢。  相似文献   
94.
95.
96.
97.
98.
99.
Immune checkpoint inhibitors are molecules that increase the endogenous immune response against tumors. They have revolutionized the field of oncology. Since their initial approval for the treatment of advanced melanoma, their use has expanded to the treatment of several other advanced cancers. Unfortunately, immune checkpoint inhibitors have also been associated with the emergence of a new subset of autoimmune-like toxicities, known as immune-related adverse events. These toxicities differ depending on the agent, malignancy, and individual susceptibilities. Although the skin and colon are most commonly involved, any organ may be affected, including the liver, lungs, kidneys, and heart. Most of these toxicities are diagnosed by excluding other secondary infectious or inflammatory causes. Corticosteroids are commonly used for treatment of moderate and severe immune-related adverse events, although additional immunosuppressive therapy may occasionally be required. The occurrence of immune-related toxicities may require discontinuation of immunotherapy, depending on the specific toxicity and its severity. In this article, we provide a focused review to familiarize practicing clinicians with this important topic given that the use of immune checkpoint inhibitors continues to increase.  相似文献   
100.
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