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   1031篇
  免费   39篇
  国内免费   6篇
耳鼻咽喉   11篇
儿科学   32篇
妇产科学   42篇
基础医学   72篇
口腔科学   73篇
临床医学   59篇
内科学   164篇
皮肤病学   18篇
神经病学   110篇
特种医学   101篇
外科学   278篇
综合类   9篇
一般理论   1篇
预防医学   12篇
眼科学   23篇
药学   52篇
肿瘤学   19篇
  2023年   8篇
  2022年   18篇
  2021年   19篇
  2020年   11篇
  2019年   23篇
  2018年   26篇
  2017年   31篇
  2016年   41篇
  2015年   33篇
  2014年   50篇
  2013年   66篇
  2012年   74篇
  2011年   76篇
  2010年   42篇
  2009年   38篇
  2008年   61篇
  2007年   77篇
  2006年   72篇
  2005年   70篇
  2004年   72篇
  2003年   59篇
  2002年   44篇
  2001年   10篇
  2000年   7篇
  1999年   4篇
  1998年   6篇
  1997年   2篇
  1996年   10篇
  1995年   3篇
  1994年   2篇
  1993年   1篇
  1992年   8篇
  1990年   2篇
  1988年   1篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   1篇
  1976年   2篇
  1974年   2篇
  1965年   1篇
排序方式: 共有1076条查询结果,搜索用时 38 毫秒
11.
Intrauterine ischemia of the limbs is a rare condition involving thrombosis and ischemia of the extremities before birth. The clinical presentation depends on the extremity affected as well as the timing of thrombosis. Very few cases with extremity hypoperfusion and gangrene due to intrauterine thrombosis have been reported in the literature, and therefore there is no consensus on the optimal therapeutic strategy for such cases. Presented here is a case of a newborn with intrauterine brachial arterial thrombosis of the right upper extremity who was successfully treated by a combination of recombinant tissue plasminogen activator, enoxaparin and collagenase application followed by surgery.  相似文献   
12.
13.
14.
15.
16.
Aortic stiffness increases in patients with erectile dysfunction (ED) but it is not known whether aortic stiffness affects the degree of ED. In the present study, we aimed to determine whether there is any relationship between aortic stiffness and the severity of ED. Patients with ED were divided into 3 groups according to the International Index of Erectile Function (IIEF) scores. Mild ED was named as group 1, moderate ED as group 2 and severe ED as group 3. The values of fasting blood glucose (FBG), serum lipid values, total testosterone (T. tes), and free testosterone (F tes) were recorded. Aortic stiffness was determined by pulse wave velocity (PWV) and augmentation index (AIX) measurements. The mean or median values of the laboratory parameters among the groups were similar (> .05). No statistical difference was found between the groups in terms of AIX value (p = .386). Mean PWV values were calculated as 7.26, 8.30 and 8.78 in group 1, group 2 and group 3 respectively. PWV values were significantly different between groups (< .0001). PWV values were found to be increased with increasing severity of erectile dysfunction.  相似文献   
17.
Metabolic myopathies due to disorders of lipid metabolism are a heterogeneous group of diseases. Newborns may present with hypotonia and convulsions, while progressive proximal muscle weakness or recurrent episodes of muscle weakness accompanied by rhabdomyolysis/myoglobinuria may be seen in older ages. There is little knowledge on detection of disorders of lipid metabolism by acylcarnitine profile (ACP) analysis by tandem mass spectrometry outside the neonatal period particularly in cases with recurrent rhabdomyolysis first presenting in adolescence and adulthood. Two adolescent female cases presented with episodes of rhabdomyolysis and muscle weakness. A 13-year-old patient had five episodes of rhabdomyolysis triggered by infections. Tandem mass spectrometry was normal. A 16-year-old female patient was hospitalized eight times due to recurrent rhabdomyolysis. Increased levels of C14:2, C14:1, and C14 were determined in tandem mass spectrometry. Final diagnoses were carnitine palmitoyltransferase II (CPT II) deficiency and very long-chain acyl-CoA dehydrogenase (VLCAD) deficiency. Increased serum levels of long-chain acylcarnitine can guide to the diagnosis of lipid metabolism disorders. Serum ACP should be performed before enzyme assay and genetic studies.  相似文献   
18.
We herein report successful cryoablation of paroxysmal atrial fibrillation via right jugular vein in a patient with interrupted inferior vena cava. We preferred cryoablation instead of radiofrequency ablation in the treatment of our patient. For stronger support in aiming the Brockenbrough needle toward the septum, we manuallly curved the needle with a 120° angle about 6 cm proximal to the tip. After successful transseptal puncture, we performed balloon dilatation in the septal puncture zone to facilitate passage. Cryoablation has theoretical advantage, particularly in challenging anatomies, in which it eliminates the need for point‐by‐point ablation around the pulmonary vein.  相似文献   
19.
20.
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