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   231323篇
  免费   6254篇
  国内免费   549篇
耳鼻咽喉   3332篇
儿科学   8525篇
妇产科学   6708篇
基础医学   30995篇
口腔科学   6585篇
临床医学   18348篇
内科学   41893篇
皮肤病学   5473篇
神经病学   15117篇
特种医学   12375篇
外国民族医学   98篇
外科学   34540篇
综合类   1355篇
一般理论   60篇
预防医学   18843篇
眼科学   5060篇
药学   16186篇
  2篇
中国医学   183篇
肿瘤学   12448篇
  2018年   4258篇
  2017年   4496篇
  2016年   3897篇
  2015年   5627篇
  2014年   5160篇
  2013年   4906篇
  2012年   11683篇
  2011年   6913篇
  2010年   3367篇
  2009年   4802篇
  2008年   3994篇
  2007年   4815篇
  2006年   5003篇
  2005年   13002篇
  2004年   14464篇
  2003年   9962篇
  2002年   5244篇
  2001年   5103篇
  2000年   2606篇
  1999年   6515篇
  1998年   977篇
  1996年   691篇
  1992年   7114篇
  1991年   7339篇
  1990年   7594篇
  1989年   7216篇
  1988年   6691篇
  1987年   6463篇
  1986年   6152篇
  1985年   5480篇
  1984年   3811篇
  1983年   3099篇
  1982年   1271篇
  1981年   978篇
  1980年   1046篇
  1979年   4016篇
  1978年   2540篇
  1977年   1929篇
  1976年   1688篇
  1975年   2616篇
  1974年   3250篇
  1973年   2886篇
  1972年   2884篇
  1971年   2834篇
  1970年   2649篇
  1969年   2562篇
  1968年   2318篇
  1967年   2246篇
  1966年   1976篇
  1965年   1211篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Die Anaesthesiologie - Phantomschmerzen haben eine hohe Prävalenz nach Majoramputationen und sind mit einer zusätzlichen Einschränkung der Lebensqualität verbunden....  相似文献   
2.
3.
4.
5.
6.
7.
8.
Attachment is a behavioral and physiological system, which enables individual’s dynamic adaptation to its environment. Attachment develops in close interaction between an infant and his/her mother, plays an important role in the development of the infant’s brain, and influences the quality of interpersonal relationships throughout life.Security of attachment is believed to influence individual response to stress, exposing insecurely organized individuals to deregulated autonomic nervous system and exaggerated hypothalamic-pituitary-adrenal activity, which, in turn, produces increased and prolonged exposure to stress-hormones. Such stress responses may have considerable implications for the development of diverse health-risk conditions, such as insulin resistance and hyperlipidemia, shown by numerous studies.Although the mechanisms are not yet fully understood, there is compelling evidence highlighting the role of psychological stress in the development of type 1 diabetes (T1D). One of the possible contributing factors for the development of T1D may be the influence of attachment security on individual stress reactivity. Thus, the suggestion is that insecurely attached individuals are more prone to experience increased and prolonged influence of stress hormones and other mechanisms causing pancreatic beta-cell destruction.The present paper opens with a short overview of the field of attachment in children, the principal attachment classifications and their historic development, describes the influence of attachment security on individual stress-reactivity and the role of the latter in the development of T1D. Following is a review of recent literature on the attachment in patients with T1D with a conclusion of a proposed role of attachment organization in the etiology of T1D.  相似文献   
9.
Background. Haemophagocytic lymphohistiocytosis (HLH) is a rare clinical syndrome characterized by fever, hepatosplenomegaly, cytopenia, and progressive multiple-organ failure. HLH in adults is often secondary to autoimmune diseases, cancer, or infections in contrast to familial HLH. Treatment of secondary HLH is directed against the triggering disease in addition to immunosuppressive therapy, the latter commonly according to the HLH-2004 protocol.Methods. We conducted a retrospective study to identify triggering diseases, disease-specific and immunosuppressive therapy administered, and prognosis in adult patients with secondary HLH. Patient data were collected from October 2010 to January 2015.Results. Ten adult patients with secondary HLH were identified. Seven were men, and the median age at diagnosis was 62 years. Five cases were triggered by malignant disease and five by infection. The median patient fulfilled five of the eight HLH-2004 diagnostic criteria. All patients fulfilled the criteria fever, cytopenia, and ferritin >500 µg/L. Median time from hospital admission to HLH diagnosis was 20 days. Four patients received immunosuppressive therapy according to the HLH-2004 protocol. The prognosis was dismal, especially for the patients with malignancy-associated HLH, of whom all died.Conclusion. HLH should be suspected in patients who present with fever, cytopenia, and ferritin >500 µg/L. Secondary HLH has a dismal prognosis. None of the patients with HLH triggered by malignancy survived. Achieving remission of the triggering disease seems to be important for a favourable outcome as, in all surviving patients, the haemophagocytic syndrome resolved after remission of the underlying infection.  相似文献   
10.
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