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   5777036篇
  免费   438165篇
  国内免费   16714篇
耳鼻咽喉   83601篇
儿科学   183188篇
妇产科学   154972篇
基础医学   846728篇
口腔科学   165729篇
临床医学   534715篇
内科学   1050439篇
皮肤病学   133847篇
神经病学   472938篇
特种医学   226034篇
外国民族医学   1472篇
外科学   869788篇
综合类   162459篇
现状与发展   23篇
一般理论   3084篇
预防医学   484115篇
眼科学   141140篇
药学   418329篇
  29篇
中国医学   14882篇
肿瘤学   284403篇
  2021年   57555篇
  2019年   59747篇
  2018年   78103篇
  2017年   59602篇
  2016年   66630篇
  2015年   78163篇
  2014年   113311篇
  2013年   179088篇
  2012年   165100篇
  2011年   177982篇
  2010年   138752篇
  2009年   135824篇
  2008年   162613篇
  2007年   176581篇
  2006年   182194篇
  2005年   176863篇
  2004年   176099篇
  2003年   165396篇
  2002年   154966篇
  2001年   231069篇
  2000年   230740篇
  1999年   204276篇
  1998年   80898篇
  1997年   73989篇
  1996年   71891篇
  1995年   67533篇
  1994年   61415篇
  1993年   56777篇
  1992年   154142篇
  1991年   149818篇
  1990年   144933篇
  1989年   140694篇
  1988年   130241篇
  1987年   127967篇
  1986年   121327篇
  1985年   117970篇
  1984年   93501篇
  1983年   81835篇
  1982年   57210篇
  1981年   52537篇
  1979年   85480篇
  1978年   64602篇
  1977年   56301篇
  1976年   52651篇
  1975年   54744篇
  1974年   63381篇
  1973年   60928篇
  1972年   57616篇
  1971年   53615篇
  1970年   50070篇
排序方式: 共有10000条查询结果,搜索用时 585 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