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   3354360篇
  免费   246902篇
  国内免费   8538篇
耳鼻咽喉   46427篇
儿科学   112522篇
妇产科学   93092篇
基础医学   472331篇
口腔科学   92413篇
临床医学   304575篇
内科学   659622篇
皮肤病学   78471篇
神经病学   272874篇
特种医学   130172篇
外国民族医学   1282篇
外科学   505415篇
综合类   69766篇
现状与发展   6篇
一般理论   1221篇
预防医学   257258篇
眼科学   75802篇
药学   247421篇
  9篇
中国医学   6787篇
肿瘤学   182334篇
  2019年   25880篇
  2018年   36598篇
  2017年   28021篇
  2016年   32193篇
  2015年   36277篇
  2014年   50036篇
  2013年   75572篇
  2012年   101076篇
  2011年   107145篇
  2010年   64634篇
  2009年   61799篇
  2008年   100555篇
  2007年   107063篇
  2006年   108599篇
  2005年   104524篇
  2004年   101136篇
  2003年   97700篇
  2002年   94587篇
  2001年   161247篇
  2000年   165710篇
  1999年   140213篇
  1998年   40213篇
  1997年   35786篇
  1996年   35985篇
  1995年   34702篇
  1994年   32159篇
  1993年   30136篇
  1992年   110094篇
  1991年   106355篇
  1990年   103300篇
  1989年   99736篇
  1988年   91538篇
  1987年   89831篇
  1986年   84044篇
  1985年   80308篇
  1984年   60043篇
  1983年   50844篇
  1982年   29908篇
  1981年   26993篇
  1979年   53336篇
  1978年   37491篇
  1977年   31972篇
  1976年   29652篇
  1975年   31693篇
  1974年   37323篇
  1973年   35571篇
  1972年   33270篇
  1971年   30665篇
  1970年   28571篇
  1969年   26930篇
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
131.
Objectives:To report if the association of epilepsy in pediatric patients (below the age of 15 years) with Insulin-dependent Diabetes (IDDM) at King Fahad Medical City (KFMC) is higher than the prevalence of epilepsy in the same age group (who have no IDDM) in our community. Consequently, we would determine if there is a relationship between the presence of epilepsy in diabetic children and the presence of positive antiGAD65 antibodies.Methods:This cohort study included 305 pediatric patients below the age of 15 years with Insulin-dependent Diabetes Mellitus (IDDM). They were randomly recruited at the Pediatric Endocrinology Clinic in KFMC. The patients’ caregivers were given a questionnaire between December 2015 till March 2019 to determine the seizure disorder history. There was also a retrospective review of 214 patients’ files for anti-GAD 65 positivity.Results:Our study found a significant relation between the presence of epilepsy in children with IDDM. Therefore, we could confirm the relationship between the existence of epilepsy in children with IDDM and having positive GAD65 antibodies.Conclusion:Our study supports the presence of consistent relation between having IDDM and having epilepsy in children and between the latter and the presence of positive GAD65 antibodies.

Insulin dependent diabetes Mellitus (IDDM) is a common condition in children and adolescents worldwide and so is epilepsy.1,2 Recently, there were increasing reports suggesting a potential association between having IDDM and the occurrence of epilepsy.3 Their association might represent simply a chance to relate their underlying mechanisms. However, the cause-effect relationship is not fully well defined. Literature from other countries have shown the increased prevalence of seizure disorders in this group of patients.4,5 There are scarce studies in the literature investigating IDDM characteristics contributing to having epilepsy, including positive GAD 65 antibodies. In this study that ran in King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia (KSA) we are aiming to determine if the prevalence of epilepsy among 1DDM children under the age of 15 years (in our center) is higher than controls (same age without IDDM), and to check the positivity of anti-GAD 65 amongst those patients in order to find if there is a relationship between epilepsy in children with diabetes and the presence of positive GAD65 Antibodies.  相似文献   
132.
133.
134.
Nevo  N.  Goldstein  A. L.  Staierman  M.  Eran  N.  Carmeli  I.  Rayman  S.  mnouskin  Y. 《Hernia》2022,26(6):1491-1499
Hernia - The minimally invasive surgical repair of combined inguinal and ventral hernias often requires shifting from one approach or plane to another. The traditional enhanced-view totally...  相似文献   
135.
136.
Haemophilia is a common cause of genetically inherited bleeding disorders. Pseudotumours occur in 1–2 % of persons with severe forms of haemophilia. These are a result of repeated haemorrhage into soft tissues, subperiosteum or a site of bone fracture with inadequate resorption of the extravasated blood. There are a number of therapeutic alternatives for this dangerous condition: surgical removal, percutaneous management, irradiation, embolization etc. In this case report, we describe the natural history, clinical course and successful surgical management of a patient with haemophilia who presented with a massive pseudotumour. We also briefly review the relevant literature on the various therapeutic modalities that have been implemented in the management of this rare complication. Though surgeons may be averse to operate on haemophiliacs, primary surgical management as done in our case may prove to be the definitive treatment option for such patients.  相似文献   
137.
138.
139.
As millions of people turn to social media for health information, better understanding the factors that guide health-related judgments and perceptions in this context is imperative. We report on two Web experiments (n > 400 total) examining the power of society’s widespread weight bias and related stereotypes to influence nutrition judgments in social media spaces. In Experiment 1, meals were judged as lower in nutritional quality when the person who recommended them (the source) was depicted as obese rather than of normal weight, an effect mediated by stereotypic beliefs about the source as a generally unhealthy person. Experiment 2 replicated this effect, which—notably—remained significant when controlling for objective nutritional information (calories and fat content). Results highlight spillover effects of weight bias that extend beyond person perception to color impressions of objects (here, food) that are associated with stigmatized attributes. Implications for everyday nutrition judgments and public health are considered.  相似文献   
140.
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