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   6256篇
  免费   375篇
  国内免费   20篇
耳鼻咽喉   92篇
儿科学   208篇
妇产科学   174篇
基础医学   672篇
口腔科学   145篇
临床医学   454篇
内科学   1480篇
皮肤病学   138篇
神经病学   307篇
特种医学   162篇
外科学   1168篇
综合类   200篇
一般理论   3篇
预防医学   400篇
眼科学   159篇
药学   523篇
中国医学   33篇
肿瘤学   333篇
  2023年   63篇
  2022年   132篇
  2021年   209篇
  2020年   126篇
  2019年   165篇
  2018年   205篇
  2017年   139篇
  2016年   173篇
  2015年   187篇
  2014年   199篇
  2013年   270篇
  2012年   446篇
  2011年   471篇
  2010年   230篇
  2009年   186篇
  2008年   283篇
  2007年   298篇
  2006年   286篇
  2005年   290篇
  2004年   248篇
  2003年   215篇
  2002年   191篇
  2001年   96篇
  2000年   110篇
  1999年   88篇
  1998年   53篇
  1997年   38篇
  1996年   27篇
  1995年   32篇
  1993年   24篇
  1992年   88篇
  1991年   52篇
  1990年   62篇
  1989年   54篇
  1988年   55篇
  1987年   54篇
  1986年   48篇
  1985年   41篇
  1984年   36篇
  1983年   27篇
  1981年   25篇
  1980年   24篇
  1979年   46篇
  1978年   27篇
  1977年   33篇
  1975年   26篇
  1974年   30篇
  1973年   41篇
  1972年   38篇
  1971年   26篇
排序方式: 共有6651条查询结果,搜索用时 27 毫秒
81.
Cirrhosis contributes significantly to morbidity and mortality worldwide. Infections in patients with cirrhosis are common and significantly impact health-related quality of life. As our understanding of immune dysfunction associated with cirrhosis grows and as rates of drug-resistant organisms increase, the management of infections in cirrhosis has become increasingly nuanced. In this review, we discuss the current understanding of cirrhosis-associated immune deficiency, review the most common infections in patients with cirrhosis, and highlight techniques for the general clinician in the prevention and treatment of infections in this high-risk population.  相似文献   
82.
83.
84.
Metabolic Brain Disease - Patients with liver disease often have alteration of neurological status which requires admission to an intensive care unit. Patients with acute liver failure (ALF),...  相似文献   
85.
The aim of this study was to evaluate the use of different fixatives on the reliability of histopathological changes in a rabbit model of proliferative vitreoretinopathy (PVR). Twenty eyes from 10 rabbits were divided into four groups. The right eyes were used in two experimental groups (each n = 5), and the left, in two control groups (each n = 5). Using a newly developed scleral incision marker, an oblique scleral incision was standardized in the experimental groups, followed by intravitreal injection of 0.4 ml autologous blood and the left for wound repair for four weeks. Eyes were enucleated at four weeks. The groups differed in the type of used fixative solution (formaldehyde 4% vs. 1% buffered formaldehyde and 1.25% glutaraldehyde). The eyes were evaluated for the development of fibrosis, retinal detachment (RD), and processed for histopathology. Fibrous ingrowth of a variable degree was present in the experimental groups originating from the trauma site. Experimental eyes fixed with formaldehyde 4% had RD extension that was greater than that fixed in formaldehyde/glutaraldehyde mixture; however, the difference did not reach statistical significance (P = 0.15). This difference was not fully explained by the fibrosis which developed. In addition, in control groups, formaldehyde 4% induced a fixative-dependent retinal separation that was absent in eyes fixed with formaldehyde/glutaraldehyde mixture (P = 0.03). In conclusion, a mixture of buffered formaldehyde 1% and glutaraldehyde 1.25% combined with standardized scleral incision resulted in consistent pathological changes. A reliable PVR model is a condition sine qua non to evaluate antifibrotic treatment strategies.  相似文献   
86.
Leprous mononeuropathy may present without demonstrable maculoanesthetical patches. A case is described in whom wasting of the right hand was initially attributed to C8 T1 entrapment radiculopathy caused by cervical perineurial cysts. On the basis of the benign nature of the perineurial cysts and questionable right ulnar nerve thickening, the patient was given a trial of anti-leprosy drugs. A follow-up clinico-electrophysiological evaluation favored the diagnosis of leprotic ulnar mononeuropathy.  相似文献   
87.
88.
Intravascular catheters are inserted into almost all critically ill patients. This review provides up-to-date insight into available knowledge on epidemiology and diagnosis of complications of central vein and arterial catheters in ICU. It discusses the optimal therapy of catheter-related infections and thrombosis. Prevention of complications is a multidisciplinary task that combines both improvement of the process of care and introduction of new technologies. We emphasize the main component of the prevention strategies that should be used in critical care and propose areas of future investigation in this field.  相似文献   
89.
90.
Clinical Rheumatology - Considering the pathologic significance of inflammation and oxidative stress in rheumatoid arthritis (RA) as well as the antioxidant, anti-inflammatory and hypolipidemic...  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