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   4524051篇
  免费   360372篇
  国内免费   14473篇
耳鼻咽喉   63322篇
儿科学   145189篇
妇产科学   119220篇
基础医学   692719篇
口腔科学   123871篇
临床医学   411947篇
内科学   819070篇
皮肤病学   112437篇
神经病学   372177篇
特种医学   175666篇
外国民族医学   564篇
外科学   692714篇
综合类   128058篇
现状与发展   23篇
一般理论   2641篇
预防医学   375722篇
眼科学   107553篇
药学   319250篇
  24篇
中国医学   12698篇
肿瘤学   224031篇
  2021年   56214篇
  2019年   58809篇
  2018年   74664篇
  2017年   56804篇
  2016年   62952篇
  2015年   75726篇
  2014年   110212篇
  2013年   175415篇
  2012年   129228篇
  2011年   136085篇
  2010年   128048篇
  2009年   128383篇
  2008年   122286篇
  2007年   130908篇
  2006年   139035篇
  2005年   133811篇
  2004年   134087篇
  2003年   123989篇
  2002年   113401篇
  2001年   168482篇
  2000年   164029篇
  1999年   150015篇
  1998年   72304篇
  1997年   67671篇
  1996年   65836篇
  1995年   61089篇
  1994年   55194篇
  1993年   51283篇
  1992年   108253篇
  1991年   104805篇
  1990年   100858篇
  1989年   98694篇
  1988年   90988篇
  1987年   89176篇
  1986年   84051篇
  1985年   82468篇
  1984年   68316篇
  1983年   60826篇
  1982年   48171篇
  1981年   44953篇
  1980年   42304篇
  1979年   59726篇
  1978年   48181篇
  1977年   42379篇
  1976年   39666篇
  1975年   40284篇
  1974年   44380篇
  1973年   42473篇
  1972年   39768篇
  1971年   37119篇
排序方式: 共有10000条查询结果,搜索用时 406 毫秒
51.
52.
IntroductionHip displacement is common in cerebral palsy (CP) and is related to the severity of neurological and functional impairment. It is a silent, but progressive disease, and can result in significant morbidity and decreased quality of life, if left untreated. The pathophysiology of hip displacement in CP is a combination of hip flexor-adductor muscle spasticity, abductor muscle weakness, and delayed weight-bearing, resulting in proximal femoral deformities and progressive acetabular dysplasia. Due to a lack of symptoms in the early stages of hip displacement, the diagnosis is easily missed. Awareness of this condition and regular surveillance by clinical examination and serial radiographs of the hips are the key to early diagnosis and treatment.Hip surveillance programmesSeveral population-based studies from around the world have demonstrated that universal hip surveillance in children with CP allows early detection of hip displacement and appropriate early intervention, with a resultant decrease in painful dislocations. Global hip surveillance models are based upon the patients’ age, functional level determined by the Gross Motor Function Classification system (GMFCS), gait classification, standardized clinical exam, and radiographic indices such as the migration percentage (MP), as critical indicators of progressive hip displacement.ConclusionDespite 25 years of evidence showing the efficacy of established hip surveillance programmes, there is poor awareness among healthcare professionals in India about the importance of regular hip surveillance in children with CP. There is a need for professional organizations to develop evidence-based guidelines for hip surveillance which are relevant to the Indian context.  相似文献   
53.
54.
55.
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years.  相似文献   
56.
57.
Abstract

Purpose

Financial hardship can be a major cause of distress among persons with cancer, resulting in chronic stress and impacting physical and emotional health. This paper provides an analysis of the lived experience of cancer patients’ financial hardship from diagnosis to post-treatment.  相似文献   
58.
59.
60.
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