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   263篇
  免费   7篇
  国内免费   1篇
耳鼻咽喉   22篇
儿科学   31篇
妇产科学   3篇
基础医学   38篇
口腔科学   5篇
临床医学   10篇
内科学   40篇
皮肤病学   1篇
神经病学   33篇
特种医学   5篇
外科学   57篇
预防医学   7篇
眼科学   3篇
药学   10篇
肿瘤学   6篇
  2021年   6篇
  2020年   5篇
  2019年   2篇
  2018年   3篇
  2017年   6篇
  2016年   10篇
  2015年   5篇
  2014年   4篇
  2013年   10篇
  2012年   12篇
  2011年   14篇
  2010年   3篇
  2009年   5篇
  2008年   14篇
  2007年   19篇
  2006年   19篇
  2005年   12篇
  2004年   7篇
  2003年   15篇
  2002年   8篇
  2001年   4篇
  2000年   10篇
  1999年   5篇
  1998年   3篇
  1993年   3篇
  1992年   2篇
  1991年   4篇
  1990年   2篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1979年   2篇
  1978年   3篇
  1974年   2篇
  1973年   2篇
  1971年   3篇
  1970年   3篇
  1968年   4篇
  1967年   4篇
  1966年   1篇
  1965年   3篇
  1964年   2篇
  1963年   1篇
  1962年   2篇
  1961年   1篇
  1959年   2篇
  1958年   1篇
  1956年   1篇
  1954年   2篇
  1926年   1篇
排序方式: 共有271条查询结果,搜索用时 0 毫秒
81.
82.
83.
84.
85.
86.
Germ cell tumors comprise 0.4-3.1% of all intracranial tumors, and teratoma constitutes 9-30% of them. Congenital intracranial tumors are very rare and only account for 0.5-1.5% of all childhood brain tumors. The most common type of these tumors present at birth is teratomas, which represent 0.5% of all intracranial tumors. Most teratomas are midline tumors located predominantly in the sellar and pineal regions. In this study, we report a neonatal intracranial immature teratoma at the lateral ventricle because of its rare location. A 5-day-old female neonate presented with a history of irritability and left eye protrusion since birth. A head computed tomographic (CT) scan and magnetic resonance imaging (MRI) disclosed a large tumor filling the left lateral ventricle and extending into the ipsilateral retro-orbital space. With left frontotemporoparietal craniotomy, a large grayish-white lobulated vascular mass was encountered, and total removal of tumor was performed. Histological examination revealed the diagnosis of immature teratoma. The prognosis of congenital intracranial immature teratoma is usually poor because the lesions are extensive when they are identified. Prenatal ultrasonography is necessary for the prenatal diagnosis. Fetal MRI should be made for the evaluation of intracranial tumor. If the tumor is detected before the 24th week of gestation, termination of the pregnancy should be considered.  相似文献   
87.
Introduction: Despite the use of appropriate antimicrobial therapy and intensive care support, sepsis remains a major cause of morbidity and mortality in surgical clinics. Low-molecular weight heparin treatment may reduce mortality and end-organ failure in sepsis. The purpose of this study was to compare the effects of low-molecular weight heparins such as nadroparine, enoxaparine, and dalteparine on lipopolysaccharide-induced acute phase reaction in mice. Methods: Lipopolysaccharide was injected intraperitoneally to produce a systemic inflammatory response and septic shock-like effects in adult male BALB/c mice. Mices were treated with low-molecular weight heparins (nadroparine, enoxaparine, dalteparine) and unfractioned heparin in different doses and times. Rectal temperature and spontaneous locomotor activity of the mice were evaluated. Results: Lipopolysaccharide (1 mg/kg, intraperitoneal) produced a hypothermia that occurred 20 minutes after injection. Nadroparine pretreatment (23.75 U/kg, sc) 2 hours before lipopolysaccharide challenge, but not synchronous injection, inhibited the hypothermic response. Pretreatment with equivalent doses of enoxaparine or dalteparine had no effect on the hypothermia. The high dose of lipopolysaccharide (60 mg/kg, intraperitoneal) caused more profound hypothermia and also inhibited spontaneous locomotor activity 24 hours after injection. Synchronous nadroparine administration partially attenuated the hypothermia and significantly abolished the depression of spontaneous locomotor activity. Conclusions: The results suggest that some low-molecular weight heparins such as nadroparine might be beneficial in high-risk surgical patients because of their potential anti-inflammatory action, in addition to their efficiency in preventing thrombo-embolic complications.  相似文献   
88.
89.
90.
The abstract of this study was accepted as an oral presentation in the 10th Annual Meeting of the ESC Working Group on Echocardiography, December 6–9, 2006, Prague, Czech Republic  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