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   6723篇
  免费   78篇
  国内免费   6篇
耳鼻咽喉   265篇
儿科学   245篇
妇产科学   358篇
基础医学   282篇
口腔科学   112篇
临床医学   399篇
内科学   1374篇
皮肤病学   307篇
神经病学   283篇
特种医学   502篇
外科学   1935篇
综合类   21篇
预防医学   191篇
眼科学   254篇
药学   13篇
中国医学   1篇
肿瘤学   265篇
  2023年   8篇
  2020年   7篇
  2018年   23篇
  2017年   16篇
  2016年   26篇
  2015年   501篇
  2014年   562篇
  2013年   557篇
  2012年   560篇
  2011年   508篇
  2010年   578篇
  2009年   545篇
  2008年   564篇
  2007年   489篇
  2006年   457篇
  2005年   391篇
  2004年   261篇
  2003年   49篇
  2002年   8篇
  2001年   12篇
  2000年   12篇
  1999年   29篇
  1998年   25篇
  1997年   47篇
  1996年   41篇
  1995年   28篇
  1994年   29篇
  1993年   30篇
  1992年   17篇
  1991年   24篇
  1990年   17篇
  1989年   22篇
  1988年   21篇
  1987年   14篇
  1986年   18篇
  1985年   13篇
  1984年   15篇
  1983年   32篇
  1982年   30篇
  1981年   34篇
  1980年   23篇
  1979年   27篇
  1978年   12篇
  1977年   13篇
  1976年   16篇
  1975年   15篇
  1974年   11篇
  1973年   10篇
  1972年   6篇
  1968年   6篇
排序方式: 共有6807条查询结果,搜索用时 0 毫秒
91.
Acute liver failure is a rare dynamic disease with a high spontaneous mortality. It is defined as acute (<26 weeks) severe liver insufficiency (INR?>1.5) with hepatic encephalopathy in the absence of chronic liver disease. The most important prognostic parameters in acute liver failure are the etiology as well as the stage of hepatic encephalopathy. Multiorgan failure, infections as well as advanced cerebral edema are the most frequent causes of death in patients with acute liver failure. Management of acute liver failure always requires intensive care surveillance with close monitoring. In case of complications an early and aggressive therapy is recommended. This includes a fluid and blood glucose monitoring, tracheal intubation and mannitol in cases of cerebral edema, a substitution of coagulation factors only in case of hemorrhage, early antibiotics for infections, early renal replacement therapy, N-acetyl cysteine for stage I/II hepatic encephalopathy as well as etiology-specific therapeutic measures. Liver transplantation is the last step therapy.  相似文献   
92.
93.
Arteriovenous malformations are vascular anomalies characterised by the presence of an arteriovenous shunt in the absence of a normally structured capillary bed. The prevalence of manifestations in the brain is given in specialist literature with a high level of variability. Brain hemorrhages resulting from a lesion of a cerebral arteriovenous malformation and leading to sudden unexpected death are relatively seldom in forensic autopsy material. The forensic significance of this syndrome may be illustrated by the example of a 16-year-old female who was found dead in the bathroom of her parents?? home for reasons which were initially unexplained.  相似文献   
94.
In recent years a flood of new psychoactive substances offered as “legal highs” appeared on the drugs market worldwide. In some parts of the world amphetamine-type stimulants are predominant but in Germany synthetic cannabinoids represent the bigger problem. The high dynamics which are maintained by the “cat and mouse game” of scheduling substances and the producers circumventing the regulations by adding new, chemically modified substances, poses a great challenge for both forensic science and toxicology.  相似文献   
95.
96.
97.
98.
99.
Approximately 200,000 cases of ambulant pneumonia per year are currently anticipated in Germany. In order to reduce complications and to further minimize lethality a rapid diagnosis as well as efficient and quick therapy are significant factors within the medical treatment and the diagnosis can be achieved promptly with the aid of lung ultrasound. This article illustrates the sonomorphology of pneumonia as well as diffuse parenchymal lung disease and presents recent studies on the topic. Furthermore, lung ultrasound is compared with other diagnostic methods.  相似文献   
100.
Stress reactions and stress fractures are defined as structural damage to bone caused by repetitive stress or stereotypical loading. The balance between loading and unloading of bone is disrupted in stress reactions and stress fractures through the sport-specific demands and by the exogenous or endogenous risk factors present. In sports orthopedics the localization of stress reactions and stress fractures are subdivided into high risk fractures and low risk fractures. Conventional diagnostic radiology can initially be inconclusive. With symptoms persisting over 2 weeks further diagnostics using magnetic resonance imaging (MRI) should be performed. In the area of the foot stress reactions and stress fractures can often occur bilaterally or multifocally and most commonly affect the second metatarsals followed by the third metatarsals. Fractures of the fifth metatarsal, second metatarsal base, medial malleolus as well as navicular and sesamoid fractures are high risk fractures requiring special clinical and radiological monitoring. Basically, conservative treatment using the 2-phase model is the treatment of choice. In delayed union or severe pain surgical treatment is indicated.  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