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   4136646篇
  免费   331958篇
  国内免费   16463篇
耳鼻咽喉   56513篇
儿科学   131304篇
妇产科学   109131篇
基础医学   638867篇
口腔科学   114098篇
临床医学   381035篇
内科学   735035篇
皮肤病学   104344篇
神经病学   347347篇
特种医学   162210篇
外国民族医学   587篇
外科学   624832篇
综合类   121687篇
现状与发展   23篇
一般理论   2462篇
预防医学   345690篇
眼科学   96176篇
药学   294690篇
  26篇
中国医学   12302篇
肿瘤学   206708篇
  2021年   56080篇
  2020年   35786篇
  2019年   58796篇
  2018年   73925篇
  2017年   56198篇
  2016年   62180篇
  2015年   75589篇
  2014年   110135篇
  2013年   175959篇
  2012年   117125篇
  2011年   121393篇
  2010年   124765篇
  2009年   126395篇
  2008年   106551篇
  2007年   112745篇
  2006年   121773篇
  2005年   116153篇
  2004年   116781篇
  2003年   106901篇
  2002年   96118篇
  2001年   151002篇
  2000年   145938篇
  1999年   135910篇
  1998年   70230篇
  1997年   66641篇
  1996年   64439篇
  1995年   60001篇
  1994年   53971篇
  1993年   50170篇
  1992年   97774篇
  1991年   94174篇
  1990年   90424篇
  1989年   87824篇
  1988年   80842篇
  1987年   79135篇
  1986年   75206篇
  1985年   73727篇
  1984年   62290篇
  1983年   55410篇
  1982年   45893篇
  1981年   42703篇
  1980年   40164篇
  1979年   52984篇
  1978年   43200篇
  1977年   38791篇
  1976年   35822篇
  1975年   35413篇
  1974年   38449篇
  1973年   37172篇
  1972年   34903篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
BackgroundTotal hip and knee arthroplasties are increasingly performed operations, and routine follow-up places huge demands on orthopedic services. This study investigates the effectiveness, patients’ satisfaction, and cost reduction of Virtual Joint Replacement Clinic (VJRC) follow-up of total hip arthroplasty and total knee arthroplasty patients in a university hospital. VJRC is especially valuable when in-person appointments are not advised or feasible such as during the COVID-19 pandemic.MethodsA total of 1749 patients who were invited for VJRC follow-up for knee or hip arthroplasty from January 2017 to December 2018 were included in this retrospective study. Patients were referred to VJRC after their 6-week postoperative review. Routine VJRC postoperative review was undertaken at 1 and 7 years and then 3-yearly thereafter. We evaluated the VJRC patient response rate, acceptability, and outcome. Patient satisfaction was measured in a subgroup of patients using a satisfaction survey. VJRC costs were calculated compared to face-to-face follow-up.ResultsThe VJRC had a 92.05% overall response rate. Only 7.22% required further in-person appointments with only 3% being reviewed by an orthopedic consultant. VJRC resulted in an estimated saving of £42,644 per year at our institution. The patients’ satisfaction survey showed that 89.29% of the patients were either satisfied or very satisfied with VJRC follow-up.ConclusionVJRC follow-up for hip and knee arthroplasty patients is an effective alternative to in-person clinic assessment which is accepted by patients, has high patient satisfaction, and can reduce the cost to both health services and patients.  相似文献   
52.
53.
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   
54.
55.
56.
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   
57.
58.
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   
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