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   4842553篇
  免费   376280篇
  国内免费   15321篇
耳鼻咽喉   67706篇
儿科学   155101篇
妇产科学   128381篇
基础医学   730192篇
口腔科学   133776篇
临床医学   444953篇
内科学   879923篇
皮肤病学   118250篇
神经病学   403253篇
特种医学   189014篇
外国民族医学   934篇
外科学   726526篇
综合类   134145篇
现状与发展   24篇
一般理论   2762篇
预防医学   396988篇
眼科学   114575篇
药学   349077篇
  28篇
中国医学   13277篇
肿瘤学   245269篇
  2021年   56863篇
  2019年   59241篇
  2018年   75898篇
  2017年   57985篇
  2016年   64370篇
  2015年   76841篇
  2014年   111242篇
  2013年   177025篇
  2012年   138241篇
  2011年   145543篇
  2010年   130399篇
  2009年   130626篇
  2008年   130908篇
  2007年   140290篇
  2006年   148064篇
  2005年   141971篇
  2004年   142668篇
  2003年   132548篇
  2002年   121510篇
  2001年   194868篇
  2000年   191296篇
  1999年   172262篇
  1998年   75002篇
  1997年   69843篇
  1996年   67934篇
  1995年   63388篇
  1994年   57145篇
  1993年   52974篇
  1992年   125334篇
  1991年   119897篇
  1990年   115724篇
  1989年   112741篇
  1988年   103521篇
  1987年   101117篇
  1986年   95581篇
  1985年   92781篇
  1984年   75493篇
  1983年   66339篇
  1982年   50553篇
  1981年   46635篇
  1980年   43780篇
  1979年   65102篇
  1978年   50835篇
  1977年   45540篇
  1976年   41687篇
  1975年   42691篇
  1974年   46846篇
  1973年   44891篇
  1972年   42202篇
  1971年   39102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