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   931475篇
  免费   67643篇
  国内免费   1341篇
耳鼻咽喉   12962篇
儿科学   24398篇
妇产科学   23269篇
基础医学   133047篇
口腔科学   28258篇
临床医学   80559篇
内科学   183405篇
皮肤病学   19280篇
神经病学   72218篇
特种医学   36855篇
外国民族医学   79篇
外科学   152297篇
综合类   18045篇
现状与发展   1篇
一般理论   234篇
预防医学   61710篇
眼科学   21364篇
药学   72588篇
  3篇
中国医学   2163篇
肿瘤学   57724篇
  2018年   8977篇
  2017年   7056篇
  2016年   7796篇
  2015年   8877篇
  2014年   12023篇
  2013年   17537篇
  2012年   24145篇
  2011年   25105篇
  2010年   14861篇
  2009年   14322篇
  2008年   24663篇
  2007年   25764篇
  2006年   26545篇
  2005年   25502篇
  2004年   24629篇
  2003年   23664篇
  2002年   23210篇
  2001年   54752篇
  2000年   56563篇
  1999年   46981篇
  1998年   10755篇
  1997年   9478篇
  1996年   9607篇
  1995年   8941篇
  1994年   8294篇
  1993年   7607篇
  1992年   35512篇
  1991年   33931篇
  1990年   32750篇
  1989年   31901篇
  1988年   29032篇
  1987年   28275篇
  1986年   26310篇
  1985年   25161篇
  1984年   17842篇
  1983年   15146篇
  1982年   7804篇
  1981年   6775篇
  1979年   15789篇
  1978年   10603篇
  1977年   9061篇
  1976年   7874篇
  1975年   8633篇
  1974年   10470篇
  1973年   9864篇
  1972年   9363篇
  1971年   8854篇
  1970年   8429篇
  1969年   7930篇
  1968年   7202篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
Background: Poor anger regulation is considered a risk factor of aggression in individuals with mild or borderline intellectual disabilities. Psychomotor therapy (PMT) targets anger regulation through body- and movement-oriented interventions. This study aims to inform practitioners on efficacy and research-base of PMT in this population.

Method: This systematic review evaluated nine studies which met inclusion criteria in terms of participants, intervention procedures, outcomes and certainty of evidence.

Results: Seven studies revealed a substantial reduction of aggressive behaviour or anger. Certainty of evidence was rated inconclusive in most cases due to absence of experimental control.

Conclusions: We can conclude that body-oriented PMT, involving progressive relaxation and meditation procedure “Soles of the Feet”, is a promising approach. However, the paucity of studies and methodological limitations preclude classifying it as an evidence-based practice. This suggests stronger methodological research and research aimed at PMT’s mechanisms of action (e.g., improved interoceptive awareness) is warranted.  相似文献   

22.
Purpose: To review the systemic and ocular manifestations of specific emergent viral infectious diseases relevant to the ophthalmologist with particular emphasis on anterior uveitis

Methods: Review of literature.

Results: Arboviral diseases are among the most important emergent and resurgent human infections, occurring mostly in tropical and subtropical zones, but appearing in virtually all regions of the world as a result of climate change, travel, and globalization. Arboviral infections are transmitted to humans by the bite of hematophagous arthropods, mainly mosquitoes. Systemic disease may range from asymptomatic to life-threatening. A wide variety of ocular manifestations, including uveitis, has been reported in association with these emerging viral diseases. Numerous viruses other than arboviruses also have been recently recognized as a potential cause of uveitis.

Conclusions: Proper clinical diagnosis of any emerging infectious disease is based on epidemiological data, history, systemic symptoms and signs, and the pattern of ocular involvement. The diagnosis is usually confirmed by detection of virus-specific DNA or antivirus antibodies in serum.  相似文献   
23.
24.
25.
26.
27.
28.
29.
30.
Preimplantation genetic diagnosis (PGD) was originally developed to diagnose embryo-related genetic abnormalities for couples who present a high risk of a specific inherited disorder. Because this technology involves embryo selection, the medical, bioethical, and legal implications of the technique have been debated, particularly when it is used to select features that are not related to serious diseases. Although several initiatives have attempted to achieve regulatory harmonization, the diversity of healthcare services available and the presence of cultural differences have hampered attempts to achieve this goal. Thus, in different countries, the provision of PGD and regulatory frameworks reflect the perceptions of scientific groups, legislators, and society regarding this technology. In Brazil, several texts have been analyzed by the National Congress to regulate the use of assisted reproduction technologies. Legislative debates, however, are not conclusive, and limited information has been published on how PGD is specifically regulated. The country requires the development of new regulatory standards to ensure adequate access to this technology and to guarantee its safe practice. This study examined official documents published on PGD regulation in Brazil and demonstrated how little direct oversight of PGD currently exists. It provides relevant information to encourage reflection on a particular regulation model in a Brazilian context, and should serve as part of the basis to enable further reform of the clinical practice of PGD in the country.  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